heat-timer SQ-Elite-8T User manual

059063–00 REV. C
INSTALLATION AND
OPERATION MANUAL
FOR HYDRONIC SYSTEMS
SQ-ELITE-8T & SQ-ELITE-EXT
HYDRONIC SEQUENCING CONTROL

The SQ-Elite is strictly an operating control. It cannot be used as
a limit control. All boilers must have all safety and limit controls
required by code. It is the responsibility of the installer to verify that
all the safety and limits are working properly before the SQ-Elite
is installed.
This control must be installed by a licensed electrician.
WARNING

TABLE OF CONTENTS
01 LAYOUT 3
02 OVERVIEW 4
03 UNDERSTANDING OPERATION CONCEPT 6
RESET RATIO/OUTDOOR RESET 6
PID OPERATION 7
OSS OPERATION 7
04 INITIAL SETUP 8
SELECTING THE SYSTEM FEATURES 8
05 INSTALLATION 10
MOUNTING THE ENCLOSURE 10
INSTALL THE SENSORS 11
LOCATING THE SYSTEM SENSOR 11
IMMERSION HEATING SYSTEM SENSOR (HSS) INSTALLATION 11
STRAP-ON HEATING SYSTEM SENSOR (HSS) INSTALLATION 11
OUTDOOR SENSOR INSTALLATION 12
WIRING 13
WIRING THE POWER 13
WIRING THE SENSORS 13
WIRING THE DOMESTIC HOT WATER (DHW) SENSOR 14
WIRING THE SHUTDOWN 14
WIRING THE T-STAT 15
WIRING THE SETBACK 15
WIRING THE PROVE 15
WIRING THE SYSTEM OUTPUT 16
WIRING THE DHW PUMP 16
WIRING THE COMBUSTION AIR DAMPER 16
WIRING THE STAGES 17
WIRING THE PUMP OR VALVE OUTPUTS 17
06 CONNECTING TO THE SQ-ELITE-EXT PANELS 18
CONNECTING SQ-ELITE TO TWO EXTENSION 18
PANELS USING RS485
SELECTING THE SQ-ELITE-EXT PANEL LETTER 18
07 CONNECTING 4–20MA EMS INTERFACE 19
08 CONNECTING TO BACNET INTERFACE MODULE 20
09 DISPLAY 21
10 INSTALLER MENU SEQUENCE 23
ACCESSING THE INSTALLER MENU 23
STARTUP SETTINGS 24
STARTUP SEQUENCE 27
CONTROL MODE 27
DISPLAY UNIT 27
SETTING THE 4MA AND 20MA SET POINTS 28
APPLICATION 28
DHW PIPING 28
DHW PUMP OUTPUT 29
COMBUSTION AIR DAMPER OUTPUT 29
EXTERNAL INPUT MODE 29
BURNER TYPE 29
BOILER OUTPUT 30
TOTAL BOILERS 30
STAGING 30
SEQUENCE 30
CONTROL LOGIC 31
SENSOR FAULT 31
OPERATING SETTINGS 32
SEASON 32
RESET RATIO 33
CUSTOMIZED RESET RATIO 33
SET POINT 34
OUTDOOR CUTOFF TEMPERATURE 34
TARGET OFFSET 35
MINIMUM TARGET 35
MAXIMUM TARGET 35
BOILER MINIMUM RETURN 36
MINIMUM RETURN 36
RETURN LAG 36
SYSTEM SETTINGS 36
STAGE SETTINGS 37
REACTION TIME 37
PURGE DELAY 37
MINIMUM RUNTIME 37
STANDBY DELAY 38
LAST STAGE HOLD 38
THROTTLE RANGE 39
LEAD SETTINGS 40
LEAD BOILER 40
ROTATE MODE 40
SETBACK SCHEDULE 41
SETBACK 41
BOOST 41
BOOST PERIOD 41
DAY/NIGHT SCHEDULES 42
SET PRESENT TIME 42
DHW SETTINGS 43
DHW PRIORITY TIMER 43
DHW SET POINT 44
DHW DIFFERENTIAL 44
PUMP, VALVE, AND COMBUSTION AIR DAMPER OPERATION 45
RUN-ON 45
PUMP EXERCISE 45
MAINTENANCE 46
SYSTEM & OUTDOOR SENSOR TRIM 46
HISTORY 46
CONFIGURATION 46
BOILER/C.UNIT SETTING 47
MODE 47
RUNTIME 47
USER MENU SEQUENCE 48
SEASON 48
SET POINT 49
RESET RATIO 49
CUSTOMIZED RESET RATIO 50
OUTDOOR CUTOFF TEMPERATURE 50
SETBACK 51
DAY/NIGHT SCHEDULES 51
11 PUMPS PIPING/WIRING DIAGRAMS 52
MULTIPLE BOILERS WITH PUMPS PIPING/WIRING DIAGRAMS 52
12 TROUBLESHOOTING 53
TEMPERATURE INPUTS 53
CONTROL OPERATION 54
13 BACNET 55
BACNET MSTP STARTUP MENU 55
BACNET MODE 55
BACNET BAUD RATE 55
MS/TP ADDRESS 55
BACNET ID 55
ELITE SERIES BACNET PICS STATEMENT 56
SQ 8T—BACNET VARIABLE LIST 57
14 SPECIFICATIONS 60
15 NOTES 61
16 WARRANTY 63

01 LAYOUT
LED indicates the
associated relay’s status.
Output Relays to manage the stages. When connecting Temperature Sensors, no
Polarity is observed. Prove terminals must be
connected for SQ-Elite to operate stages.
System Output controls pumps,
valves, or other system components.
DHW Pump and Comb. Air relays are
controlled when configured.
Connect to Extension panels to
add additional stages or connect
to 4–20mA EMS Interface for
external set point.
Button functions are presented
on Bottom Row of display.
Program Switch to restrict access
to function changes. This Switch is
covered with Enclosure Wiring Cover.
059063–00 REV. C HEAT-TIMER CORP. |3

4|HEAT-TIMER CORP. 059063–00 REV. C
SEQUENCES UP TO 8 STAGES WITH PUMPS OR VALVES
The SQ-Elite-8T is the perfect control whenever multiple boiler or chiller stages are required for hydronic heating or cooling applications.
The SQ-Elite-8T controls the stages and their pumps or valves to maintain a precise system set point.
PID OR OVER-SIZED-SYSTEM (OSS) LOGIC
The SQ-Elite’s control algorithm allows it to look at the rate of change in the system. If the load is changing quickly, the SQ-Elite can
be set to OSS sequencing where it will react based on load changes. If the system oscillation is minimal as in heating applications, the
SQ-Elite will make slow and gradual output adjustments. Therefore, the SQ-Elite adapts to specific system requirements and minimizes
oscillation around the set point.
DIGITAL DISPLAY OF ALL SYSTEM SETTINGS
The SQ-Elite’s alphanumeric digital display names each system parameter in simple English and shows its precise value. The easy to
follow menu system allows users to quickly make changes to any system setting without having to learn any specialized codes or
key commands.
AUTOMATIC ROTATION AMONG STAGES
Rotating the first stage to be activated on a call for output promotes even wear on each unit. The SQ-Elite has three modes of rotation:
Manual, First-On/First-Off (FOFO), or Time. The Time rotates the lead stage every selected period from every hour to every 41 days.
OUTDOOR RESET WITH CUSTOMIZABLE CURVE
With its Outdoor reset feature, the SQ-Elite-8T is capable of changing its temperature target based on the outdoor temperature. It
offers several parameters that can be used to fine tune the reset curve; Offset, Minimum, and Maximum Targets, and Night Setback
Schedule or Setback using an External Signal. Furthermore, a customizable outdoor reset curve has been incorporated for unique
applications where standard reset ratios will not suffice.
STANDBY UNIT OPTION
Any of the SQ-Elite-8T heating or cooling units can be configured as a Standby with an adjustable Standby delay. Assigning a specific
unit to work in standby mode will remove it from the rotation. In this mode, the unit will be used for backup in large demand periods
where the primary units will not suffice.
SYSTEM AND COMBUSTION AIR DAMPER OUTPUTS WITH PROVE INPUT
These outputs work with the control logic to operate a primary system pump and a combustion air damper. In addition, a System Prove
input can be wired in to check the status of either of the components energized by the outputs before the stages can be activated.
NORMAL (LO/HI/LO/HI) OR PARALLEL (LO/LO/HI/HI) SEQUENCING
The SQ-Elite can sequence heating or cooling units as needed. For heating systems where higher efficiency is achieved using lower
firing stages, the SQ-Elite offers the Parallel Sequencing option. It sequences all the low firing stages first before bringing the rest of
the stages on. For other types of heating and cooling units, using the Normal Sequencing option brings the lower operating stage
followed by the higher one of the lead unit. That will be repeated for each of the lag units.
MULTIPLE OR SINGLE STAGING
Unlike many boilers where, to fire a multi-stage boiler both low and high stage relays must be energized, some of the available cooling
units require that the operation of the higher stages turn off the lower operating stages. This can be achieved by selecting Single from
the Startup Staging menu.
02 OVERVIEW

059063–00 REV. C HEAT-TIMER CORP. |5
ADD UP TO 16 STAGES
As a stand-alone, the SQ-Elite-8 is designed to control eight stages. However, it has the capability of expanding its control to two
extension panels (SQ-Elite-EXT) each with eight stages. Thus, the SQ-Elite can control a total of up to 24 stages.
MONITOR SYSTEM RETURN TEMPERATURE
Using a smart algorithm, the SQ-Elite-8T can monitor the boiler return temperature using an optional return sensor mounted on the
return line. Then, sequence the boilers to raise the return temperature above an adjustable Minimum Return.
DHW PUMP CONTROL WITH MULTIPLE PRIORITY OPTIONS
Having a DHW input either as a dry contact to be used with an external aquastat or as a temperature sensor that can be ordered
separately, the SQ-Elite-8T can control a DHW pump using its built-in DHW Pump output relay. The user will have different priority
options that varies based on the DHW piping design.
BACNET MSTP COMMUNICATION
An optional BACnet Interface Module (P/N 926781–00) can be used to connect the control to a BACnet MSTP network for
remote access.
02 OVERVIEW

6|HEAT-TIMER CORP. 059063–00 REV. C
03 UNDERSTANDING OPERATION CONCEPT
The SQ-Elite-8T has multiple operating modes that satisfy most hydronic systems. In
heating when the Outdoor Reset is selected, it can change the System Set Point based
on outdoor temperature. Or, it can be set to Set Point and sequence stages to achieve
a manually adjusted Set Point in either heating or cooling.
In Outdoor Reset, the SQ-Elite-8T controls a hot water heating system to provide a
building with comfortable and even heat levels. The SQ-Elite varies the Target temperature
of the circulating heating water in response to changes in the outdoor temperature.
The SQ-Elite-8T also controls the system circulating pump with an adjustable Outdoor
Cutoff. In heating, when the outdoor temperature is above the Outdoor Cutoff, the
System Pump will be off and no heating water is circulated through the system. When
the outdoor temperature drops below the Outdoor Cutoff, the system pump relay is
energized and the heating water starts to circulate through the system. The temperature
of the heating water is controlled by the Reset Ratio parameters or the Set Point. In
cooling applications, the SQ-Elite-8T turns off the cooling units and System Pump when
the outdoor temperature rises above the Outdoor Cutoff setting.
RESET RATIO/OUTDOOR RESET
When a building is being heated, heat escapes through the walls, doors, and windows
to the colder outside air. The colder the outside temperature, the more heat escapes.
If you can input heat into the building at the same rate that it is lost out of the building,
then the building temperatures will remain constant. The Reset Ratio is an adjustment
that lets you achieve this equilibrium between heat input and heat loss.
The starting point for most systems is the 1.00 (OD):1.00 (SYS) (Outdoor Temperature:
Heating Water Temperature) ratio. This means that for every degree the outdoor
temperature drops, the temperature of the heating water will increase one degree. The
starting point of the curves is adjustable, but comes factory selected at 70°F Outdoor
Temp. and 100°F Water Temp. For example with a 1.00 (OD):1.00 (SYS) ratio, if the
outdoor temperature is 50°F, this means the temperature has fallen 20° from the starting
point of 70°F. Therefore, the heating water temperature will increase 20° to 120°F.
Each building has different heat loss characteristics. A very well insulated building will
not lose much heat to the outside air, and may need a Reset Ratio of 2.00 (OD):1.00
(SYS) (Outdoor:Water). This means the outdoor temperature would have to drop 2
degrees to increase the water temperature 1 degree. On the other hand, a poorly
insulated building with insufficient radiation may need a Reset Ratio of 1.00 (OD):2.00
(SYS). This means that for each degree the outdoor temperature dropped the water
temperature will increase 2 degrees. The SQ-Elite has a full range of Reset Ratios to
match any buildings heat loss characteristics.
A heating curve that relies not only on Outdoor temperature but also on the type of
radiation will improve heat comfort. The following are suggested initial settings for
different types of radiation based on average building insulation and heat loss. The
contractor can fine tune these adjustments based on the specific building need.
TYPE OF RADIATION IN BUILDING RESET RATIO OFFSET
Radiators (Steel & Cast Iron) 1.00 (OD) : 1.00 (SYS) 0˚F
Baseboard (Finned copper tube& Cast Iron) 1.00 (OD) : 1.00 (SYS) 0˚F
Radiant (High Mass/Concrete) 4.00 (OD) : 1.00 (SYS) -10˚F
Radiant (Low Mass/Joists) 2.00 (OD) : 1.00 (SYS) -10˚F
Fan Coils & Air Handlers 1.00 (OD) : 1.00 (SYS) 20˚F
Water Temperature
70 60 50 40
Outdoor Temperature
130
120
110
100
Water Temperature
70 60 50 40
Outdoor Temperature
110
100
90
80
Water Temperature
70 60 50 40
Outdoor Temperature
150
140
130
120
1:4
With a 0° Offset,
the Reset curves
begin at 100°
Water Temperature.
With a -20° Offset,
the Reset curves
begin at 80° Water
Temperature.
With a +20° Offset,
the Reset curves
begin at 120° Water
Temperature.
1:4
1:4 1:1
1:1
1:1
4:1
4:1
4:1
90
100
+20 Offset
-20 Offset
Outdoor Temperature
Water Temperature
70 405060
130
120
110
100
1:4 1:1
4:1
Colder
Warmer
70 60 50 40 30 20 10 0 -10 -20
100
120
110
130
140
150
160
180
170
190
200
210
220
1:3 1:2 1:1.5
1:1.25
1:1
1.25:1
1.5:1
2:1
3:1
4:1
Water Temperature (in °F)
Outdoor Temperature (in °F)
Reset Ratio is Presented as
Outdoor Temp. : Water Temp. Ratio
Reset Ratio Curves
1:4
Water Temperature
70 60 50 40
Outdoor Temperature
130
120
110
100
Water Temperature
70 60 50 40
Outdoor Temperature
110
100
90
80
Water Temperature
70 60 50 40
Outdoor Temperature
150
140
130
120
1:4
With a 0° Offset,
the Reset curves
begin at 100°
Water Temperature.
With a -20° Offset,
the Reset curves
begin at 80° Water
Temperature.
With a +20° Offset,
the Reset curves
begin at 120° Water
Temperature.
1:4
1:4 1:1
1:1
1:1
4:1
4:1
4:1
90
100
+20 Offset
-20 Offset
Outdoor Temperature
Water Temperature
70 405060
130
120
110
100
1:4 1:1
4:1
Colder
Warmer
70 60 50 40 30 20 10 0 -10 -20
100
120
110
130
140
150
160
180
170
190
200
210
220
1:3 1:2 1:1.5
1:1.25
1:1
1.25:1
1.5:1
2:1
3:1
4:1
Water Temperature (in °F)
Outdoor Temperature (in °F)
Reset Ratio is Presented as
Outdoor Temp. : Water Temp. Ratio
Reset Ratio Curves
1:4
WARNING
When controlling a non condensing
boiler, the Minimum Target
temperature must be set to the
boiler manufacturer specifications. In
that case, system temperature must
not go below such temperature.

059063–00 REV. C HEAT-TIMER CORP. |7
THROTTLING EXAMPLE IN HEATING MODE
SET POINT = 180°F THROTTLING = 5°F 4 BOILER STAGES, A, B, C , AND D
FALLING TEMPERATURE RISING TEMPERATURE
Temperature Calculation Stage Turned on Stages on Stage Turned off Stages on
185°F 180 + (1)THR — None A None
180°F 180 - (0)THR — None — A
175°F 180 - (1)THR A A B A
171 to 174°F — — A — A,B
170°F 180 - (2)THR B A,B C A,B
166 to 169°F — — A,B — A,B,C
165°F 180 - (3)THR C A,B,C D A,B,C
161 to 165°F — — A,B,C — A,B,C,D
160°F 180 - (4)THR D A,B,C,D — A,B,C,D
03 UNDERSTANDING OPERATION CONCEPT
The SQ-Elite-8T has multiple operating modes that satisfy most hydronic systems. It can sequence stages to achieve an adjustable
Set Point or an Outdoor Reset Ratio (in heating applications only). Moreover, when used with the 4–20mA EMS Interface
(HT# 926741–00) it can accept a 4–20mA signal as a set point. The 4–20mA EMS Interface must be purchased separately. This gives
the SQ-Elite-8T the capability of being controlled remotely.
PID OPERATION
PID control logic is primarily used for building heating or cooling. The logic will utilize two primary settings to add or subtract stages.
The Reaction Time is used to turn on/energize stages. On the other hand, the Minimum Runtime is used to turn off/de-energize
stages. In heating applications, a call for heat, by either closing the TSTAT input or opening the SHUTDOWN input, and when the
outdoor temperature is below the Outdoor Cutoff, the SQ-Elite-8T will turn on/energize the lowest firing stage of the Lead Boiler
to start the Purge Delay. After the elapse of the purge period, the SQ-Elite-8T will start calculating the Reaction Period. If after a full
Reaction Time the control logic foresee additional stages are needed, the SQ-Elite-8T will energize the following stage. If that stage
was another boiler, that boiler has to go through a full Purge Delay before starting to calculate the Reaction Time for that stage.
Otherwise, if the next stage was the higher firing stage on the same boiler, the Reaction Time will start from the moment the higher
firing stage relay is energized.
When the SQ-Elite-8T PID logic foresees that the system will overshoot, regardless of the current system and target values, it will
make sure that the last stage turned on/energized has elapsed a full Minimum Runtime before it is turned off/de-energized. Except
for the lead stage, no additional stages will be turned off/de-energized until another full Minimum Runtime is elapsed. On the other
hand, if the last stage is a lead stage, it will remain energized until the system reading exceeds the target set point by the Last Stage
Hold value in addition to satisfying the Minimum Runtime condition. That is, if the Set Point was 150°F and the Last Stage Hold was
set to 10°F, the lead stage will remain energized until the system reaches 160°F and a full Minimum Runtime elapses. This is useful in
protecting the lead stages from short cycling.
OSS OPERATION
OSS is used in fast reacting application as in process applications, where maintaining a set point is critical. The OSS utilizes the
Throttle setting, as a mean to calculate the number of stages the SQ-Elite-8T shall have on at any point. For every Throttle Range
below the set point an additional stage shall be turned on/energized. That is, if the set point was 180°F and the Throttle setting was
5°F, if the System dropped below 175°F (180°F - 5°F), the lead stage will energize. With further decrease in the system value to 170°F
(180°F - 5°F - 5°F), the second stage will energize.
As the system temperature rises towards the set point, stages will turn off. Using the previous example, when the system rise to
175°F boiler B will de-energize leaving only boiler A on. Boiler A will remain on until the system rises a one full Throttle range above
the set point. This will leave the lead boiler A on until the temperature rises to 185°F then turn off/de-energize.

8|HEAT-TIMER CORP. 059063–00 REV. C
04 INITIAL SETUP
MAKE SURE YOU HAVE THE RIGHT CONTROL
If you need the SQ-Elite to do additional tasks that either are not listed or do not know how to configure them,
contact Heat Timer Corp. Technical Support either by Phone [phone], Fax [phone], or by
E-mail [e-mail].
Having an Initial Setup Program will ease the configuration of the SQ-Elite-8T and will provide the opportunity to utilize many of the
energy saving features and give more comfortable heat when needed.
The program should consist of the following:
• Selecting the features that your system can utilize.
• Installation: Install the Control, switches and sensors. See “Installation” on page 10.
• Setting the System Startup. See “Startup Settings” on page 24.
• Setting the System Settings. See “System Settings on page 36.
• Setting the Stages. See “Staging” on page 30.
• Adjusting Reset Ratio and Water Offset (In Reset Mode Only). See “Reset Ratio” on page 49.
SELECTING THE SYSTEM FEATURES
The SQ-Elite-8T has been designed with Hydronic heating and cooling as the primary purpose. With this in mind, many of the SQ-Elite-8T
features can be utilized to ease, enhance, and improve your system performance. Some of these features are listed in this section.
HEATING OR COOLING WITH MULTIPLE OR SINGLE OUTPUT AT A TIME
• The SQ-Elite-8T is equipped to control multiple multi-stage boilers or chillers with or without pumps or valves for heating or
cooling application.
• That, combined with the capability of energizing only a single stage of a multi-stage cooling unit when in high demand, makes
the SQ-Elite-8T versatile for many industries.
OUTDOOR RESET, SET POINT, OR EXTERNAL 4–20MA SET POINT
• The SQ-Elite-8T can control the System Temperature either by adjusting the target according to the Outdoor Temperature
(Outdoor Reset) or by maintaining an adjustable Set Point. The Outdoor Reset option, available in heating only, uses an
Outdoor Sensor (supplied with the control) and achieves better fuel savings in addition to better comfort.
• Using the optional 4–20mA EMS Interface (P/N 926741–00), the SQ-Elite-8T can receive an external set point through an
EMS system.
PID OR OSS CONTROL LOGIC
• The SQ-Elite PID can be used for applications where system reaction is slow and requires a long period to achieve or measure
the results. However, OSS, can be used for applications where the load changes frequently and the sequencing must match
the load and its immediate change.
NUMBER OF STAGES
• The SQ-Elite can be configured to control up to eight stages. It can control up to 24 stages using a maximum of two
SQ-Elite-EXT Extension Panels, P/N 926732–00 each with eight stages.

059063–00 REV. C HEAT-TIMER CORP. |9
04 INITIAL SETUP
STAGE PUMPS OR VALVES
• The SQ-Elite-8T can control multiple stages in addition to unit pumps or valves.
CONTROL DHW PUMP AND COMBUSTION AIR DAMPER
• The control of the DHW is based on either a temperature sensor, can be purchased separately, on the DHW source or using
a dry contact from an aquastat. The SQ-Elite-8T provides multiple DHW Priority options based on the DHW piping. The
Combustion Air Damper output can be used in conjunction with the PROVE input to check the status of the Combustion Air
Damper’s End Switch, System Pump’s Flow Switch, or any other operating device before any stage is energized.
MONITOR BOILER RETURN
• The optional return line sensor, can be purchased separately, can be connected in heating applications to monitor and help
protect the boilers from thermal shock and condensation caused by cool returns.
AUTOMATIC ROTATION AMONG BOILERS
• Rotating the lead unit to be activated on a call for output promotes even wear on all units. The SQ-Elite has three modes of
rotation: Manual, First-On-First-Off, or Timed Rotation. This option automatically rotates the units every selected period from
one hour to every 41 days (999 hours).
SETBACK/BOOST OR DAY/NIGHT SCHEDULING
Two Setback modes are available for the SQ-Elite:
• The Day/Night Scheduling provides an adjustable time-based schedule for the Setback. It will be available when Shutdown or
Tstat is selected from the External Input Startup menu options. See page 42.
• When Setback is selected from the External Input Startup menu options, an external signal can be used to switch the
operation of the SQ-Elite-8T in and out of setback mode. See page 41.
• The Boost can be used to bring the building to comfortable temperature settings after a Night or Setback period. It does that
by increasing the target temperature in heating or decreasing it in cooling application for an adjustable period that follows
the setback.

10 |HEAT-TIMER CORP. 059063–00 REV. C
05 INSTALLATION
Each of the SQ-Elite and SQ-Elite-EXT consists of three primary
enclosure components.
• The Enclosure Display Module: contains the display, buttons,
LEDs, and electric wiring terminals. It has two screws to hold
it to the base. A program configuration switch, used to adjust
SQ-Elite settings, is placed above the terminals. This switch
is enclosed with the Enclosure Wiring Cover for security.
The wiring terminals are of the plug-in type to ease installation
and removal.
• The Enclosure Base: contains the holes to mount and hold the
control against the wall or any flat surface. All other enclosure
components mount on the base. The bottom section of the
Enclosure Base contains the wiring chamber with knockouts
on the bottom to ease installation.
• The Enclosure Wiring Cover: seals the wires from the external
environment. It has two screws to hold it to the base and a
hole to secure a lock on the wiring enclosure. A plastic web
that separates the wiring chamber into high and low volt
sections has been provided.
MOUNTING THE ENCLOSURE
• Select a location near the equipment to be controlled.
• The surface should be flat and sufficiently wide and strong to
hold the SQ-Elite or SQ-Elite-EXT.
• Keep the control away from extreme heat, cold, or humidity.
Ambient operating temperature is from 20 to 120°F.
• Remove the Enclosure Wiring Cover from the control enclosure
by removing the two bottom screws.
• Remove the Enclosure Display Module by removing the
middle screws.
• Screw the Enclosure Base to the surface through the upper
and lower mounting holes on the back of the enclosure.
• Replace the Enclosure Display Module and replace the
middle screws.
• Do not replace the enclosure wiring cover until all wiring
is done.
• When purchasing a padlock for the enclosure, the maximum
shank diameter should not exceed ¼”.
Enclosure Display Module
Enclosure Wiring Cover Enclosure Base
Hole for optional Padlock (not supplied)
Mounting Holes
Display Mounting
Screws
Wiring Cover Mounting Screws

059063–00 REV. C HEAT-TIMER CORP. |11
Common Supply Pipe
Sensor Probe
Strap-On Heating System Sensor
Shield
Pipe Insulation
Immersion Well
3/8" ID 1/2" NPT
Heating System
Sensor
Common Supply Pipe
Sensor Probe
Immersion Heating System Sensor
Shield
System Sensor
In Well
Shield
Not connected
Well Locknut
Sensor in Well
Well
Sensor 2-Conductor
Shielded Cable
System
Strap-On
Sensor
Shield
Not connected
Plastic
Tie-Wraps
Around Pipe
Common Supply Pipe
Sensor Probe
Strap-On Heating System Sensor
Shield
Pipe Insulation
Connect
To control
System Sensor
In Well
Shield
Not connected
Well Locknut
Sensor
in Well
Well
Sensor 2-Conductor
Shielded Cable
System
Strap-On
Sensor
Shield
Not connected
Plastic
Tie-Wraps
Around Pipe
Strap-On Sensor
Immersion Sensor
INSTALL THE SENSORS
LOCATING THE SYSTEM SENSOR
• Put the supplied System sensor (P/N 904220–00) approximately 10’ feet past the last heating/cooling unit on the common
supply header but before any takeoffs.
• The sensor must be located where it sees the output of all the stages. If a unit is piped so that the sensor does not see its
output, the SQ-Elite-8T will not sequence the units correctly.
• Only use a Standard Brass Tube sensor (P/N 904250–00).
• The sensor wires can be extended up to 500’ using a shielded 2-conductor cable (Belden #8760 or equivalent (#18/2)).
Do not ground the shield at the sensor but at the panel using one of the terminals marked with an “O”.
• Do not run sensor wires in conduit with line voltage wiring.
IMMERSION HEATING SYSTEM SENSOR (HSS)
INSTALLATION
• Install a 3/8”ID immersion well (P/N 350147–00 or P/N 904011–00).
• Insert the sensor probe of the supplied sensor into the well.
STRAP-ON HEATING SYSTEM SENSOR (HSS)
INSTALLATION
• Strap the sensor to the pipe using metal clamps. Do not over tighten the
clamp. The sensor’s concave surface must be facing the pipe for better
temperature reading.
• Strap pipe insulation around the sensor and pipe.
ALERT
If the System Sensor can not sense the correct system water temperature being supplied to the building, the SQ-Elite will not
provide comfortable heat/cool levels. Be sure that it is located on the main supply pipe which can not easily be isolated from
the system.
Common Supply
Pipe
Pipe Insulation
Heating System Sensor
Shield
Shield
Sensor Probe
Sensor Probe
IMMERSION HEATING SYSTEM SENSOR
STRAP-ON HEATING SYSTEM SENSOR
Immersion Well
3/8” ID 1/2” NPT
Common Supply
Pipe
05 INSTALLATION

12 |HEAT-TIMER CORP. 059063–00 REV. C
OUTDOOR SENSOR INSTALLATION
• Only use the Heat-Timer sensor included with the unit (P/N 904220–00).
• Locate the sensor in the shade on the north side of the building. The sensor
should never be in direct sunlight.
• Be sure the location is away from doors, windows, exhaust fans, vents, or other
possible heat sources.
• The sensor should be mounted approximately 10’ feet above ground level.
• Adhere the Outdoor Label provided to the back of the sensor base.
• Use the Enclosure Base bottom knockout for the conduit. Use the locknut to
hold the conduit and enclosure base together. Screw the cover to the base.
• If screws are used to affix the enclosure to the wall, make sure to seal around the
sensor and wall except from the bottom.
• The sensor wires can be extended up to 500’ using shielded 2-conductor cable
(#18/2). Do not ground the shield at the sensor but at the control using the
terminal marked with an “O”.
• Do not run sensor wires in conduit with line voltage wiring.
WARNING
The SQ-Elite is an operating control only. A ll equipment must have all safety and limit controls required by code. It is the
responsibility of the installer to verify that all the safety limits are working properly before the SQ-Elite is installed.
ALERT
Determining the proper location for the Outdoor Sensor is very important. The SQ-Elite will base its operation on the
outdoor temperature information it receives from this location. If the sensor is in the sun, or covered with ice, its reading
will be different from the actual Outdoor temperature.
05 INSTALLATION
Common Supply Pipe
Sensor Probe
Strap-On Heating System Sensor
Shield
Pipe Insulation
Connect
To control
System Sensor
In Well
Shield
Not connected
Well Locknut
Sensor
in Well
Well
Sensor 2-Conductor
Shielded Cable
System
Strap-On
Sensor
Shield
Not connected
Plastic
Tie-Wraps
Around Pipe
Strap-On Sensor
Immersion Sensor
Conduit
Outdoor
drip-hole Outdoor Label
on back of Sensor
Seal around
sensor and wall
Mounting
screws
location
Outdoor Sensor
snap-in location
Shield not
connected
OUTDOOR SENSOR

059063–00 REV. C HEAT-TIMER CORP. |13
05 INSTALLATION
WIRING
WIRING THE POWER
• Bring the 120VAC 60Hz power wires through the bottom Knockout of the enclosure.
• Class 1 voltage wiring must enter the enclosure through a different opening from any
Class 2 voltage wiring.
• Connect the hot line to the terminal marked L.
• Connect the neutral line to the terminal marked N.
WIRING THE SENSORS
SYSTEM TEMPERATURE SENSOR WIRING
• The SQ-Elite is designed to be connected to a temperature sensor (P/N 904220–00) for
immersion in a 3/8 ID well (P/N 350147–00 or P/N 904011–00) located on the common header.
Contact the factory for additional temperature sensor options.
• Temperature sensor wires can be extended up to 500’ by splicing shielded 2-conductor cable
(Belden #8760 or equivalent (#18/2)).
• Temperature sensors have no polarity. Connect the two wires from the sensor to the SQ-Elite-8T
terminals marked SYSTEM TEMP 27, 28.
• Connect the shield to the circled terminal 28 with one of the sensor wires. Do not connect the
shield at the sensor end.
OUTDOOR SENSOR WIRING
• When Outdoor Reset is selected, the SQ-Elite-8T will vary the system target based on the
outdoor temperature.
• Whether in Set Point or Outdoor Reset modes, the outdoor sensor can be used as an Outdoor
Cutoff. In heating, the SQ-Elite-8T will disable all Boilers when the outdoor temperature is
above the adjustable Outdoor Cutoff temperature. However, in cooling it will disable the units
when the outdoor temperature is below the Outdoor Cutoff. This feature will automatically be
activated when an outdoor sensor is connected.
• For an outdoor sensor, use a Heat-Timer outdoor sensor (P/N 904220–00).
• The sensor wires can be extended up to 500’ using shielded 2-conductor cable
(Belden #8760 or equivalent (#18/2)).
• Temperature sensors have no polarity. Connect the wires from the outdoor sensor to the
SQ-Elite-8T terminals marked OUTDOOR TEMP - 29, 30. Connect the shield to the circled
terminal 30 with one of the sensor wires. Do not connect the shield at the sensor end.
WARNING
Class 1 voltage wiring must enter the enclosure through a different opening from any class 2
voltage wiring. Heat-Timer recommends installing a surge suppressor on the power source to
the SQ-Elite.
WARNING
Connect the Temperature sensor shield at the control to the sensor terminal marked “o“.
Do not connect the Shield at the sensor end.
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12
3
DHW
PUMP
5 7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5 7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
27 29
31
DHW
33 3520 22 28 30 32 34 3625
26
37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5 7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29
31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N

14 |HEAT-TIMER CORP. 059063–00 REV. C
05 INSTALLATION
RETURN SENSOR WIRING OPTIONAL (AVAILABLE IN HEATING ONLY)
• If the Return Sensor is connected, must be purchased separately, the SQ-Elite-8T will recognize
it and alternate its temperature on the display with the Target temperature. If the Return
temperature is below the Minimum Return, the SQ-Elite-8T will sequence stages based on the
Return Sensor, Minimum Return, Calculated Target, and the actual System Temperature.
• The Return on the SQ-Elite-8T is designed to be connected to a temperature sensor that can
be purchased separately (HT #904250–00) for immersion in a 3/8ID well (P/N 350147–00 or
P/N 904011–00).
• The sensor wires can be extended up to 500’ using shielded 2-conductor cable (Belden #8760
or equivalent (#18/2)).
• Temperature sensors have no polarity. Connect the wires from the outdoor sensor to the
SQ-Elite-8T terminals marked OUTDOOR TEMP - 31, 32.
• Connect the shield to the circled terminal 32 with one of the sensor wires. Do not connect it to
the sensor.
WIRING THE DOMESTIC HOT WATER (DHW) SENSOR
• The DHW input can be used to raise system Set Point to 200°F or Maximum Target, whichever
is lower. The DHW Piping on page 28 must be selected from the Startup Menu to determine
the DHW Priority options.
• DHW Call terminals can be connected to either a dry-contact or a temperature sensor that can
be purchased separately (HT #904250–00) for immersion in a 3/8ID well (P/N 350147–00
or P/N 904011–00).
• If using a dry contact, wire an aquastat or other controls to provide dry-contact closure on the
DHW terminals.
• If using a sensor, the sensor wires can be extended up to 500’ using shielded 2-conductor cable
(Belden #8760 or equivalent (#18/2)).
• Temperature sensors have no polarity. Connect the wires from the DHW sensor to the
SQ-Elite-8T terminals marked DHW - 33, 34. Connect the sensor shield to the circled
terminal 34 with one of the sensor wires. Do not connect the shield to the sensor.
• If Shutdown was selected as the External Input, any DHW call will be ignored when the
Shutdown is active.
WIRING THE SHUTDOWN
• This feature will only be available when Shutdown is selected as the External Input Mode
option from the Startup menu on page 29.
• This feature can be used whenever it is desirable to turn off the SQ-Elite-8T stage outputs from
a remote location or another controller (i.e. EMS input).
• When the Shutdown is enabled, all active stages will immediately turn off. The System Pump,
Combustion Air, and unit pumps’ or valves’ relays will remain energized for the Run-On delay
period and then turn off.
• The Shutdown signal must be a dry contact input. No voltage can be placed across the
SHUTDOWN terminals.
• Bring the two wires from the dry contact to the SHUTDOWN - 35, 36 terminals.
• When Shutdown is selected, Setback will be available using the programmed
Day/Night schedule.
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5 7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29
31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 35
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
Outdoor Sensor
Prove
Dry Contact
Shutdown
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
T-Stat
Dry Contact
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Cut the Green,
White, and Clear
Tube
Connect
to 1/4" pigtail
BLACK
RED
Transducer
4-20mA
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Setback
Dry Contact
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
3320 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26
37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
Outdoor Sensor
Prove
Dry Contact
Shutdown
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
T-Stat
Dry Contact
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Cut the Green,
White, and Clear
Tube
Connect
to 1/4" pigtail
BLACK
RED
Transducer
4-20mA
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Setback
Dry Contact
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
3320 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N

059063–00 REV. C HEAT-TIMER CORP. |15
05 INSTALLATION
WIRING THE T-STAT
• This feature can be used whenever it is desirable to switch the SQ-Elite-8T to operate from a
remote location (i.e. EMS input or thermostat). It will only be available when Tstat is selected as
the External Input Mode option from the Startup menu on page 29.
• When the Tstat is enabled by closing a dry contact, the SQ-Elite-8T will activate the
heating/cooling logic.
• The Tstat signal must be a dry contact only. No voltage can be placed across the TSTAT terminals.
• Bring the two wires from the dry contact to the TSTAT - 35,36 terminals.
• When Tstat is selected from the Startup External Input mode, Setback will be available using
the programmed Day/Night schedule.
WIRING THE SETBACK
• This feature can be used whenever it is desirable to switch the SQ-Elite to operate in Setback
from a remote location (i.e. EMS input or external time clock). It will only be available when
Setback is selected as the External Input Mode option from the Startup menu. See page 29.
• When the Setback is enabled by closing a dry contact, the Target will change by the Setback
value. That is, in Heating, the Target will be reduced by the Setback value. On the other hand,
in Cooling, the Setback will be added to the Set Point.
• The Setback signal must be a dry contact only. No voltage can be placed across
the SETBACK terminals.
• Bring the two wires from the dry contact to the SETBACK - 35, 36 terminals.
• When Setback is selected, No Day/Night Scheduling will be available.
WIRING THE PROVE
• The Prove feature is provided to check system component operation before energizing the
stages. It can be used to check on the Combustion Air Damper by connecting it to the end
switch of the damper. In this case, the Comb. Air Output option must be activated from the
Startup Menu on page 29.
• If the Comb. Air Damper Output option was not activated, the PROVE input can be used to
check on the System Output. A typical use of this feature is to check for system pump flow
before energizing any stage.
• If the PROVE input is open on a call, the SQ-Elite will enable only the System Output. All stage
outputs will be off when the PROVE input is open.
• A factory-installed jumper provides the System Prove signal. Do not remove the jumper unless
it will be replaced by a System Prove signal.
• Bring the two wires from the dry contact to the PROVE - 37, 38 terminals. No voltage can be
placed across the PROVE terminals.
WARNING
The PROVE input cannot be used as a safety limit. All equipment must have its own certified
limit and safety controls as required by local codes. No boiler stage will start unless the Prove
terminals are shorted. DO NOT remove the PROVE jumper supplied unless replacing it with a
Prove signal.
Line
Neutral
120VAC
Power Source
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
Outdoor Sensor
Prove
Dry Contact
Shutdown
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 34 3625 26
37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
T-Stat
Dry Contact
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Cut the Green,
White, and Clear
Tube
Connect
to 1/4" pigtail
BLACK
RED
Transducer
4-20mA
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Setback
Dry Contact
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
3320 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
Outdoor Sensor
Prove
Dry Contact
Shutdown
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
T-Stat
Dry Contact
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Cut the Green,
White, and Clear
Tube
Connect
to 1/4" pigtail
BLACK
RED
Transducer
4-20mA
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Setback
Dry Contact
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26
37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
3320 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
Outdoor Sensor
Prove
Dry Contact
Shutdown
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
T-Stat
Dry Contact
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Cut the Green,
White, and Clear
Tube
Connect
to 1/4" pigtail
BLACK
RED
Transducer
4-20mA
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
PWR
LN
12 35
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31 33 3520 22 28 30 32 34 3625 26 37 38
PROGRAM RUN
23 24
SYS AUX
OUT
Auxiliary
Input2
Outdoor
Temp
System
4-20mA
+ -
PROVE
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
SHUTDOWN
/TSTAT
/SETBACK
Auxiliary
Input1
Auxiliary
Input3
Setback
Dry Contact
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
3320 22 28 30 32 34 3625 26
37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N

16 |HEAT-TIMER CORP. 059063–00 REV. C
05 INSTALLATION
WIRING THE SYSTEM OUTPUT
• The System output has a Normally Open (N.O.) relay that acts as a dry-contact. It does not
source any power.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2
voltage wiring.
SYSTEM OUTPUT OPERATION IN SET POINT MODE
• In Heating, the System output relay will energize whenever the outdoor temperature drops
below the Outdoor Cutoff or whenever a stage output is active. If no outdoor sensor is
connected and the last boiler relay has de-energized, the System relay will remain energized for
a period set by the Run-On and then de-energize.
• If the PROVE input is Open, the System relay will remain energized however, all stages will be
de-energized. If a Prove is not required, the factory-installed jumper must remain connected for
proper operation.
• In Cooling applications, the system relay will energize when the outdoor temperature is above
the Outdoor Cutoff setting.
• A typical use of the System output is to activate a system pump or its starter. The pump can run
whenever there is a call for heat/cool. When stages are no longer required, the pump will stay
active for an adjustable Run-On delay and then de-energize
SYSTEM OUTPUT OPERATION IN RESET MODE
• The System output relay will energize whenever the outdoor temperature is below the
Outdoor Cutoff.
• When the outdoor temperature rises 2°F above the Outdoor Cutoff, the System output will
remain energized for the period set by the System Run-On and then de-energize.
WIRING THE DHW PUMP
The SQ-Elite-8T can control the DHW Pump when the DHW Pump Output option is activated from
the Startup Menu. See page 29.
• The SQ-Elite-8T will energize the DHW Pump whenever there is a call for DHW using a dry
contact or when the DHW temperature falls below the DHW Set Point and DHW Differential
when using a DHW sensor.
• The DHW Pump output relay is a Normally Open (N.O.) dry contact. It does not source
any power.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2
voltage wiring.
• If Shutdown was selected as the External Input (page 29), The SQ-Elite-8T will ignore a DHW
call when the Shutdown is active.
WIRING THE COMBUSTION AIR DAMPER
The SQ-Elite-8T can control the Combustion Air Damper when the Comb. Air Output option is
activated in the Startup Menu (Page 29). In addition, the PROVE input will function as the Combustion
Air Damper status checker.
• The SQ-Elite will energize the Combustion Air Damper relay whenever there is a call to
energize any of the unit stages.
• The Combustion Air output relay is a Normally Open (N.O.) dry contact. It does not source
any power.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2
voltage wiring.
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14
16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3522 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
27 29 31
DHW
33 35
20 22
28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3522 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
27 29 31
DHW
33 35
22
28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N

059063–00 REV. C HEAT-TIMER CORP. |17
05 INSTALLATION
WIRING THE STAGES
The SQ-Elite can be configured to operate the stages of the heating or cooling units. Moreover, it can
be configured to operate the unit pumps or valves in addition to the unit stages
• The relays are N.O. dry contacts only. They do not source any voltage.
• Wire the N.O. relay contacts in series with the unit’s limit circuit.
• Class 1 voltages must enter the enclosure through a different knockout from any Class 2
voltage wiring.
WIRING THE STAGE OUTPUTS
• Each Stage output (A through H) has one (N.O.) relay.
• When wiring several multi-stage units, start with the lower stage of the first unit and wire it to
Output A, followed by the higher stage of the same unit and wire it to Stage B.
WIRING THE PUMP OR VALVE OUTPUTS
• If the SQ-Elite-8T is configured to operate Stage Pumps or Valves. They, must be wired to the
stage output after the highest stage for that unit. That is, the low stage for the first unit must
be connected to A and the higher stage of the same unit must be connected to Stage B. The
unit valve or pump for the same unit must be connected to Stage C.
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3522 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Line
Neutral
120VAC
Power Source
Sensor Shiled
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Outdoor Sensor
Prove
Dry Contact
Sensor Shiled
System Sensor
Sensor Shiled
Return Sensor
Shutdown
Dry Contact
Sensor Shiled
DHW Sensor
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
System
Pump
DHW
Pump
PWR
LN
12 3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21 27 29 31
DHW
33 3520 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
23 24
COMB.
AIR
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11 13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
T-Stat
Dry Contact
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
SENSORS MUST BE GOLD SERIES
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
SYSTEM
OUTDOOR
TEMP
SHUTDOWN
/TSTAT
/SETBACK
RETURN
TEMP
Use Copper Conductors Only.
CAUTION: Risk of Electric Shock.
PWR
LN
12
SENSORS MUST BE GOLD SERIES
SYSTEM
3
DHW
PUMP
5
Stage A
7
Stage B
9
Stage C
11
13
Stage E
15
Stage F
17
Stage D
6 8 10 12 14 16 18
RS485
4
Stage G
19
Stage H
21
OUTDOOR
TEMP
27 29 31
DHW
33
SHUTDOWN
/TSTAT
/SETBACK
35
RETURN
TEMP
20 22 28 30 32 34 3625 26 37 38
PROVE
TEMP
PROGRAM RUN
OUTPUT RATING: 6 AMP RESISTIVE,
1 AMP PILOT DUTY PER OUTPUT AT 120VAC.
23 24
COMB.
AIR
DO NOT APPLY ANY VOLTAGE TO INPUT TERMINALS
Setback
Dry Contact
Lo Hi
Unit1
Stages
Lo Hi
Unit2
Stages
Comb.
Air
Damper
L
N
L
N
L
N
L
N
Ext A Ext B
35
Stage A
7
Stage B
9
Stage C
11 13
Stage E Stage F
Stage D
6 8 10 12 144
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
L
N

18 |HEAT-TIMER CORP. 059063–00 REV. C
06 CONNECTING TO THE SQ-ELITE-EXT PANELS
• The SQ Elite is equipped with a 6-pin phone socket (RS485) to connect to extension panels. The SQ Elite Extension is equipped
with two 6-pin phone sockets to connect to the SQ Elite module and one additional SQ Elite Extension.
• Set each SQ Elite Extension to a different letter (EXT-A or EXT-B). The SQ Elite will assign the stage letters based on the extension
letter selected.
• Extension A will have its stage and Power LEDs Green. However, Extension B will have the LEDs Red. See “SQ Elite Extension
Layout” on page 3.
• Configure the Output Types (See “Output Type” on page 16) after connecting the Extension panels to be able to configure
their outputs.
• Only use the cable provided.
• Connection cable is provided as part of the SQ Elite Extension package.
CONNECTING SQ-ELITE TO TWO EXTENSION PANELS USING RS485
SQ-ELITE SQ-ELITE-EXT A
SQ-ELITE-EXT B
SELECTING THE SQ-ELITE-EXT PANEL LETTER
• The SQ-Elite is capable of communicating to two SQ-Elite-EXT Extensions. However, each
extension must be identified as either A or B using the switch on each extension to avoid
having communication problem.
• Extension A (Switch is set to “A”) will operate stages “I” through “P”. While Extension B
(Switch is set to “B”) will operate stages “Q” through “X”.
Ext A Ext B
35
Stage A
7
Stage B
9
Stage C
11 13
Stage E Stage F
Stage D
6 8 10 12 144
Lo Hi
Unit1
Stages
Unit1
Pump
Lo Hi
Unit2
Stages
Unit2
Pump
L
N

059063–00 REV. C HEAT-TIMER CORP. |19
4–20mA
EMS Signal
(–)
(+)
07 CONNECTING 4–20MA EMS INTERFACE
• The SQ-Elite is equipped with a phone socket (RS485) to connect to the SQ-Elite-EXT Extension panels or the 4–20mA EMS
Interface using the provided 6-pin phone cable.
• Each SQ-Elite-EXT Extension has two RS485 communication ports. Use one to connect to the SQ-Elite. Use the other port to
connect to the second extension or the 4–20mA EMS Interface.
• Additional compatible devices can utilize the second RS485 connection on the second SQ-Elite-EXT Extension. An example would
be to use the 4–20mA EMS Interface (HT# 926741–00) to provide a 4–20mA set point signal to the SQ-Elite.
CONNECTING SQ-ELITE TO TWO EXTENSION PANELS AND 4–20MA EMS INTERFACE
USING RS485
SQ-ELITE SQ-ELITE-EXT A
SQ-ELITE-EXT B
4–20mA EMS INTERFACE
6 Pin Phone Cable (provided with Extension)
6 Pin Phone Cable (provided with 4–20mA EMS Interface)