heat-timer DIGI-SPAN Elite MC Series User manual

HT# 059069-00 D
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
Installation and Operation Manual
Modulating Controls
MCA: Modulates voltage or 4-20mA devices
MCP: Modulates 135Ω devices
MCF: Modulates oating (3-point) devices
Measures temperature, pressure, vacuum, and humidity
MC
WARNING
This Heat-Timer control is strictly an operating control; it should
never be used as a primary limit or safety control. All equipment
must have its own certified limit and safety controls required by local
codes. The installer must verify proper operation and correct any
safety problems prior to the installation of this Heat-Timer control.

2MC-Elite Installation and Operation Manual
HT# 059069-00 D
MC LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . .3
MC OVERVIEW . . . . . . . . . . . . . . . . . . . . . . .4
RESET RATIO CONCEPT . . . . . . . . . . . . . . . . . .4
BOILER/COOLING UNIT OPERATION . . . . . . . . . . .4
VALVE OPERATION . . . . . . . . . . . . . . . . . . . . .4
MCF VALVE OPERATION . . . . . . . . . . . . . . . . . .5
MOUNTING THE CONTROLLER . . . . . . . . . . . . . .5
WIRING POWER INPUT. . . . . . . . . . . . . . . . . . .5
120VAC . . . . . . . . . . . . . . . . . . . . . . . . . .5
24VAC . . . . . . . . . . . . . . . . . . . . . . . . . . .5
WIRING INPUT TERMINALS . . . . . . . . . . . . . . . .6
Sensor Type Table . . . . . . . . . . . . . . . . . . . .6
System Temperature Sensor . . . . . . . . . . . . . . .6
Outdoor Sensor . . . . . . . . . . . . . . . . . . . . .7
Pressure or Vacuum System Transducer . . . . . . . .7
Wiring the Setback/Boost . . . . . . . . . . . . . . . .7
Wiring the Enable/Disable . . . . . . . . . . . . . . . .7
Input Wiring Modes . . . . . . . . . . . . . . . . . . . .8
Output Wire Colors Table. . . . . . . . . . . . . . . . .8
Output LED Lights . . . . . . . . . . . . . . . . . . . .8
Wiring a 4 - 20 mA Actuator Output . . . . . . . . . . .9
Wiring a Voltage Actuator Output. . . . . . . . . . . . .9
Wiring the 135Ω Valve/Boiler Output . . . . . . . . . . .9
Wiring the Floating Output . . . . . . . . . . . . . . . .9
Wiring the System Output to a Boiler. . . . . . . . . . .9
Wiring the System Output to a Pump . . . . . . . . . .9
Button and Navigating Menus . . . . . . . . . . . . . 10
Setting the Control to Factory Default. . . . . . . . . 10
STARTUP SETTINGS . . . . . . . . . . . . . . . . . . . 10
Startup Menus. . . . . . . . . . . . . . . . . . . . . . 10
Standard . . . . . . . . . . . . . . . . . . . . . . . . 10
Sensor Type . . . . . . . . . . . . . . . . . . . . . . 11
Control Mode . . . . . . . . . . . . . . . . . . . . . . 11
Application . . . . . . . . . . . . . . . . . . . . . . . 11
Modulation Signal . . . . . . . . . . . . . . . . . . . 11
Modulation Target . . . . . . . . . . . . . . . . . . . 11
Relay Output . . . . . . . . . . . . . . . . . . . . . . 12
Sensor Fault . . . . . . . . . . . . . . . . . . . . . . 12
Setting the Control to Factory Default. . . . . . . . . 12
OPERATING SETTINGS . . . . . . . . . . . . . . . . . 13
Operating Menus . . . . . . . . . . . . . . . . . . . . 13
Set Point . . . . . . . . . . . . . . . . . . . . . . . . 13
Reset Ratio . . . . . . . . . . . . . . . . . . . . . . . 14
Custom Reset Ratio . . . . . . . . . . . . . . . . . . 14
Offset . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Outdoor Cutoff . . . . . . . . . . . . . . . . . . . . . 15
Minimum Target . . . . . . . . . . . . . . . . . . . . 15
Maximum Target . . . . . . . . . . . . . . . . . . . . 15
Setback. . . . . . . . . . . . . . . . . . . . . . . . . 15
Boost . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MODULATION SETTINGS . . . . . . . . . . . . . . . . 16
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Differential . . . . . . . . . . . . . . . . . . . . . . . 16
Purge . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Run-On . . . . . . . . . . . . . . . . . . . . . . . . . 17
MAINTENANCE SETTINGS. . . . . . . . . . . . . . . . 17
Maintenance Menus . . . . . . . . . . . . . . . . . . 17
System and Outdoor Trim . . . . . . . . . . . . . . . 17
Sensor Trim Table . . . . . . . . . . . . . . . . . . . 17
Output Mode . . . . . . . . . . . . . . . . . . . . . . 18
Valve Mode . . . . . . . . . . . . . . . . . . . . . . . 18
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . 19
Sensors and LEDs . . . . . . . . . . . . . . . . . . . 19
Actuator Response . . . . . . . . . . . . . . . . . . . 20
MC ELITE OUTPUT MODES WIRING . . . . . . . . . . 21
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 22
MCA Specications . . . . . . . . . . . . . . . . . . . 22
MCP Specications . . . . . . . . . . . . . . . . . . . 22
MCF Specications . . . . . . . . . . . . . . . . . . . 22
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . 23
CONTENT

MC-Elite Installation and Operation Manual 3
HT# 059069-00 D
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
T1 T2COM T3+COM COM24VACEXT+EXT-T3- P+ P-
Input Terminals
Yellow
(System/Boiler Output)
2 Line Alphanumeric Display
Displays sensor values and
menu settings
Output Lights indicate
output status
Display Section Locking Screws
Black (120VAC power)
Blue
Red
White
Modulating Output
MC LAYOUT

4MC-Elite Installation and Operation Manual
HT# 059069-00 D
MC OVERVIEW
The MC Elite Series controls modulates valves, motors,
variable speed drives, or boilers to accurately maintain a set
point based on a PID logic; temperature, pressure, vacuum,
or humidity. There are three different models, each provides
a different modulating signal. The MCA Elite modulates
current (4-20mA) or voltage motors. The MCP Elite
modulates 135Ω motors. The MCF Elite modulates oating
motors. In addition to the modulation, the MC Elite has an
output relay to activate a boiler, cooling unit, or a pump. Like
all Digi-Span Elites, the MC constantly displays the sensor’s
value and the target set point. Additional control parameters
can also be displayed with the simple press of a button.
RESET RATIO CONCEPT
The MC Elite Series can operate based on a temperature
set point or a pressure set point. If Temperature was set as
the Sensor Type, an Outdoor Reset option will be available
as the Control Mode. See "Control Mode" on page 11. The
Outdoor Reset gives the control the capability of changing the
heating Target set point based on the outdoor temperature.
See "Reset Ratio" on page 14.Because of the many different
physical characteristics of buildings and the type of radiation;
i.e., baseboard or radiant, the heat loss varies. In one
building, a 1° temperature change outdoors may require
a change of 1 degree in heating water temperature. For
another, it may require a change of 2, 3, or even 4 degrees
in order to gain the desired comfort level. The middle chart
shows the wide range of Reset Ratios available for the MC
Elite Series controls.
The installer ts the MC Elite control to a specic building
by adjusting the Reset Ratio curve. With curve #4
(2.00(O):1.00(S)) a 2° change in Outdoor temperature (O)
will change the circulating hot water Target (S) temperature
by 1 degree; at curve #11 (1.00(O):3.00(S)) an Outdoor
(O) change of 1 degree will change the Target (S) water
temperature by 3 degrees. Most buildings with baseboard
radiation require curve #6, 7, or 8. Radiant heat applications
usually require a lower curve.
Reset Ratio (Outdoor : Water)
70 60 50 40 2030 0 -1010 -20
100
120
110
130
140
150
160
180
170
190
200
210
220 12 11 10 9
8
7
6
4
3
2
5
1
1:4 1:3 1:2 1:1.5
1:1.25
1:1
1.25:1
1.5:1
2:1
3:1
4:1
8:1
Water Temperature (in °F)
Reset Ratio Curves
Outdoor Temperature (in °F)
Radiation Type Settings
Radiation in Building Reset Ratio Offset
Radiators (Steel & Cast Iron) 1.00 (O) : 1.00 (S) 0˚F
Baseboard (Finned copper
tube& Cast Iron) 1.00 (O) : 1.00 (S) 0˚F
Radiant (High Mass/Concrete) 4.00 (O) : 1.00 (S) -10˚F
Radiant (Low Mass/Joists) 2.00 (O) : 1.00 (S) -10˚F
Fan Coils & Air Handlers 1.00 (O) : 1.00 (S) 20˚F
BOILER/COOLING UNIT OPERATION
(MCA/MCP Only)
When the MCA/MCP Elite is set to modulate a heating/cooling unit, it starts when the EXT+ and EXT- terminals are
shorted. First, it will activate the heating/cooling unit output relay (Yellow wires) for the full Purge period. After the Purge
ends, the PID starts to modulate the output until the system sensor value reaches the Target set point.
On a reduction in the demand the MCA/MCP Elite modulates the output down. If no additional output is needed, the
control will modulate the unit to the off position (0% modulation). The output relay (Yellow Wires) will remain energized
for the Run-On period. In this case, the Run-On acts as a soft-off period for the boiler/cooling unit.
VALVE OPERATION
(MCA/MCP Only)
When the MCA/MCP Elite is set to modulate a valve, it starts when the EXT+ and EXT- terminals are shorted. The
control will activate the output relay (Yellow Wires) and start to modulate the valve to get the system sensor value to the
Target set point. In many cases, the output relay will be controlling a pump.
On a reduction in the demand the MCA/MCP Elite will modulate the valve down. If no additional output is needed, the
control will modulate the valve to the off position (0% modulation). The output relay (Yellow Wires) will remain energized
for the Run-On period.

MC-Elite Installation and Operation Manual 5
HT# 059069-00 D
MCF VALVE OPERATION
When the MCF Elite is set to modulate a valve, it starts when the EXT+ and EXT- terminals are shorted. The control will
activate the output relay (Yellow Wires) and start to pulse the valve open or close to get the system sensor value to the
Target set point. In many cases, the output relay will be controlling a pump.
On a reduction in the demand the MCF Elite will pulse the valve close. If no additional output is needed, the control
will energize the Decrease output for 6 minutes to guarantee valve closure. The output relay (Yellow Wires) will remain
energized for the Run-On period.
MOUNTING THE CONTROLLER
• The MC DIGI-Elite is designed to mount
on a 1900 (4”x4”) electrical box.
• If the MC-Elite is to be panel
mounted, or if additional room is
needed use the Plastic Wiring
Enclosure (HT# 929135-00 Switch) or
(HT# 929137-00 without a Switch).
• Locate the MC-Elite in a location near
the unit to be controlled.
• Partially unscrew the Display Cover
Mounting screws to remove it.
• Lift the Display Section away from the
base to unplug the Connection Socket
from the Base section.
• Proceed with the power and output
wiring instructions.
• Mount the MC-Elite away from excessive
heat or cold.
• Mount Display Section back to the Base
Section. Tighten the Display Cover
Mounting Screws.
Display Cover
Mounting Screws
Display Section
Base Section
Base Mounting Holes
Input Terminals
24VAC optional
power input
Connection
Socket
WARNING
The MC can accept only one source of power: 120VAC or 24VAC. If
more than one power source is applied, the unit may be damaged.
WIRING POWER INPUT
The MC Elite can be wired to either 120VAC using the two Black wires or 24VAC
using the right most two terminals on the terminal block on bottom of the control.
Heat-Timer recommends the installation of a Surge Suppressor and a Power
Switch before the Power Line connection for safety and ease of service.
120VAC
• Connect the 120VAC power to the two Black wires extending from the back of
the MC Elite. Remember to use the power line from a different source than the
equipment being controlled.
120 VAC
Black (Power)
24VAC
• Use a dedicated transformer with at least a 5 VA output.
• Bring 24VAC to the two right most screws on the front of the MC Elite marked
24VAC and COM
24 VAC
Optional Power
COM
24VAC
T2
T3+COM COM24VACEXT+EXT-T3- P+ P-
Input Terminals

6MC-Elite Installation and Operation Manual
HT# 059069-00 D
WIRING INPUT TERMINALS
The MC Elite control will measure the sensor input based upon the options
selected from the Sensor Type in Startup menu. All other sensor terminal inputs
will be ignored. See "Sensor Type Table" on page 6.
WARNING
Class 1 voltage wires (low voltage) must use a different knockout,
conduit, and path from any Class 2 voltage wires (high voltage).
T1 T2 T3+ COM COM T3- EXT+ EXT- P+ P- COM 24VAC
Input Terminals
System Sensors {
Pressure, Vacuum, Humidity
Sensors, or 4-20mA input {
Enable/Disbale
Dry Contact Only {
Setback {
Outdoor Sensor {
24VAC power Input {
Sensor Type Table
STANDARD SENSOR TYPE SET POINT DIFFERENTIAL SETBACK SENSOR
TERMINALS
Range Default Range Default Range Default
Sys Temp. English Temperature 250˚F -10˚F to 230˚F 70˚F 1˚F to 40˚F 5˚F 0˚F to 80˚F 10˚F T1, COM
Outdoor English Temperature 250˚F Read Only T2, COM
Sys Press. English Pressure 30 PSI 0.0 to 30.0 PSI 10.0 PSI 0.5 to 10.0 PSI 2.0 PSI 0.0 to 10.0 PSI 3.0 PSI P+, P-
Sys Press. English Pressure 100 PSI 0 to 100 PSI 30 PSI 1 to 30 PSI 7 PSI 0 to 30 PSI 10 PSI P+, P-
Sys Press. English Pressure 200 PSI 0 to 200 PSI 60 PSI 1 to 60 PSI 10 PSI 0 to 60 PSI 20 PSI P+, P-
Sys Press. English Pressure 300 PSI 0 to 300 PSI 80 PSI 1 to 90 PSI 20 PSI 0 to 90 PSI 30 PSI P+, P-
Sys Press. English Vacuum 30 Hg 0.0 to 30.0 Hg 10.0 Hg 0.5 to 10.0 Hg 2 Hg 0.0 to 10.0 Hg 3.0 Hg P+, P-
Sys Temp. Metric Temperature 120˚C -23˚C to 110˚C 21˚C 0˚C to 44˚C 6˚C T1, COM
Outdoor Metric Temperature 120˚C Read Only T2, COM
Sys Press. Metric Pressure 0.250 MPa 0.0 to 0.25 MPa 0.10 MPa 0.001 to 0.100 MPa 0.02 MP 0.0 to 0.1 MPa 0.025 MPa P+, P-
Sys Press. Metric Pressure 0.600 MPa 0.0 to 0.6 MPa 0.2 MPa 0.002 to 0.200 MPa 0.03 MPa 0.0 to 0.20 MPa 0.06 MPa P+, P-
Sys Press. Metric Pressure 1.000 MPa 0.0 to 1.0 MPa 0.3 MPa 0.005 to 0.300 MPa 0.05 MPa 0.0 to 0.30 MPa 0.10 MPa P+, P-
Sys Press. Metric Pressure 1.600 MPa 0.0 to 1.6 MPa 0.5 MPa 0.005 to 0.500 MPa 0.10 MPa 0.0 to 0.50 MPa 0.16 MPa P+, P-
Sys Press. Metric Vacuum 760 mm 0 to 760 mm 250 mm 10 to 250 mm 50 mm 0 to 250 mm 80 mm P+, P-
Humidity Humidity 0 to 100% RH 60% RH 1 to 30% RH 7% RH 0 to 30 %RH 10 %RH P+, P-
System Temperature Sensor
Terminals (T1, COM)
• Place the Temperature Heating System Sensor in the common header where
it will register the output of the boiler/valve before any takeoffs.
• Only use the Standard Brass Tube sensor (HT #904250-00 or equivalent).
• The sensor wires can be extended up to 500' using a shielded 2-conductor 18
AWG cable (Belden #8760 or equivalent).
• Cut the shield and do not connect it at the sensor end. Only connect it at the
control end using any of the COM input terminals.
System Temp
Sensor
Shield
OutdoorTemp
Sensor
Shield
T1 T2COM T3+COM
T3-
Input T
Immersion Heating System Sensor Installation
• Install a 3/8"ID x 1/2"NPT immersion well (HT #904011-00).
• Insert the supplied sensor probe into the well.
Shield
Connect
To control
Immersion Well
3/8" ID 1/2" NPT
Common
Supply
Pipe
Sensor
Enclosure
Sensor
Probe

MC-Elite Installation and Operation Manual 7
HT# 059069-00 D
Strap-On Heating System Sensor Installation
• Strap the sensor to the pipe. Make sure that the sensors concave surface
matches the pipes concave surface.
• Strap pipe insulation around the sensor and pipe.
• Use plastic tie-wraps to hold the insulation and sensor to the pipe.
WARNING
DO NOT place any voltage on any of the input terminals.
Common Supply
Pipe
Strap-On Temperature Sensor
Pipe Insulation
Sensor Probe
Shield
Connect
To control
Outdoor Sensor
Terminals (T2, COM)
• The Outdoor Sensor must be used when Outdoor Reset is selected as the
Control Mode from the Startup menu. However, in Set Point mode, the
Outdoor Sensor is optional. In this mode it will be used for the outdoor Cutoff.
• Only use the Heat-Timer outdoor sensor (HT# 904220-00).
• Place the sensor in the shade on the north side of the building at least 10'
above the ground.
• Be sure the location is away from any heat or cool sources.
• 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.
• The sensor wires can be extended up to 500' using a shielded 2-conductor 18
AWG cable (Belden #8760 or equivalent).
• Cut the shield and do not connect it at the sensor end. Only connect it at the
control end using any of the COM input terminals.
Outdoor Sensor
snap-in location
Shield
not connected
Conduit
Outdoor Label
on back of Sensor
Mounting
screws
location
Seal around
sensor and wall
Outdoor
drip-hole
Pressure or Vacuum System Transducer
Terminals (P+, P-)
• Select a sensor location that is representative of the entire system. Place the
Pressure Transducer in the common header where it will register the output of
the boiler/valve before any takeoffs.
• Set the Sensor Type to match the Transducer and system used.
• Attach a 1/4” brass isolation tube (pigtail) to the steam/vacuum header.
• Screw the pressure or Vacuum sensor to the pigtail.
• Connect the sensor's Red wire to the MC Elite terminal marked P+.
• Connect the sensor's Black wire to the MC Elite terminal marked P-.
• The sensor wires can be extended up to 500’ by splicing with 18 gauge
twisted pair cable.
Cut the Green,
White, and Clear
Tube
Connect
to 1/4" pigtail
BLACK
RED
Transducer
4-20mA
T2 T3+COM COM24VACEXT+EXT-T3- P+ P-
Wiring the Setback/Boost
Terminals (T3+, T3-)
• The Setback feature can be used to provide the MC Elite with a lower Set
Point when less output is required during night or unoccupied periods.
• The Setback is activated by closing/shorting the T3+ and T3- terminals using
an external control, i.e., timer, control, or switch.
• The MC Elite accepts dry-contact input signals only.
Wiring the Enable/Disable
Terminals (EXT+, EXT-)
• The EXT+ and EXT- terminals are used to enable the system by connecting it
to a thermostat, switch, or an external control.
• The controls requires these terminals to be shorted to operate the outputs. If
no thermostat or control is connected to the EXT+ and EXT- terminals, leave
the jumper supplied as a dry-contact to the terminals.
Enable/Disable
Switch
Setback
T1 T2COM T3+COM COM24VEXT+EXT-T3- P+ P-
ALERT
The EXT± input terminals must be
shorted for the MC Elite to operate.
DO NOT remove the factory installed
EXT jumper unless it is replaced with
an Enable Signal.

8MC-Elite Installation and Operation Manual
HT# 059069-00 D
Input Wiring Modes
Enable/Disable Dry Contact
Temperature
Set Point
Setback Dry Contact
System Temp
Sensor
Shield
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
T1 T2
COM COM
T3+
T3-
EXT+
EXT-
P+
P-
COM
24VAC
Temperature
Outdoor Reset
Enable/Disable Dry Contact
Setback Dry Contact
OutdoorTemp Sensor
Shield
System Temp
Sensor
Shield
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
T1 T2
COM COM
T3+
T3-
EXT+
EXT-
P+
P-
COM
24VAC
Pressure
Set Point
Pressure Transducer
Enable/Disable Dry Contact
Setback Dry Contact
OutdoorTemp Sensor
Shield
SystemDecrease
®
SYSTEM = 147oF
TARGET = 150oF
DECREASE SYSTEMINCREASE
T1 T2
COM COM
T3+
T3-
EXT+
EXT-
P+
P-
COM
24VAC
OUTPUT WIRING
Output Wire Colors Table
CONTROL Modulating
Signal Black Red White Blue Yellow
(System LED)
MCA
4-20mA
120VAC Power
Common 4-20mA Signal
Boiler/Pump
0-10V, 0-5V,
2-10V, 1-5V Common Voltage Signal
MCP 0-135Ω 120VAC Power R W B Boiler/Pump
MCF Floating
(3-Point) 120VAC Power Valve Power Common Open Signal Close Signal Pump
Output LED Lights
• Each of the MC Elite has a S.P.S.T. (N.O.) System output relay to be used to
activate a boiler, a cooling unit, or a pump. The relay is rated at 1 A (1/8 HP).
The relay operation is represented by the right most LED light.
• The middle LED (INCREASE) will always indicate that the signal is increasing
(opening).
• The left most LED (DECREASE) will always represent that the modulation
signal is decreasing (closing).
SystemDecrease
DECREASE SYSTEMINCREASE

MC-Elite Installation and Operation Manual 9
HT# 059069-00 D
Wiring a 4 - 20 mA Actuator Output
(MCA Only)
• An external voltage source is required for the 4-20mA signal. A separate
ltered DC power supply providing between 30 to 36 VDC is needed.
• Set the Mod. Signal in the Startup menu to 4-20mA. See "Modulation
Signal" on page 11.
• Connect the MCA Elite Red wire to the actuator (+) 4-20mA terminal.
• Connect the MCA Elite White wire to the (+) on the DC power supply.
• Connect the (-) on the DC power supply to the actuator (-) input.
• The maximum series resistance for the MCA is 1300Ω at 30VDC.
• DO NOT connect the Blue wire.
4-20mA
Modulating
Common (Red)
4-20mA (White)
Not Used (Blue)
+-
30-36VDC
Excitation
Voltage
135Ω
MCP Modulating a 135Ω Boiler
Current
Signal
- +
135Ω
Wiring a Voltage Actuator Output
(MCA Only)
• Set the Mod. Signal in the Startup menu to one of the voltage options.
See "Modulation Signal" on page 11.
• Connect the MCA Elite Blue wire to the actuator (+) voltage signal.
• Connect the MCA Elite Red wire to the actuator (-) voltage signal.
• The maximum current the MCA Elite can output is 5 mA.
• DO NOT connect the White wire.
Voltage
Modulating
Motorized Valve
Common (Red)
Voltage (Blue)
Not Used (White)
135Ω
MCP Modulating a 135Ω Boiler
Voltage
Signal
+ -
135Ω
Wiring the 135Ω Valve/Boiler Output
(MCP Only)
• The Red MCP Elite wire is Common and should be connected to the R
terminal of the actuator.
• Connect the Blue (Close) and White (Open) MCP Elite wires
consecutively to the actuator's B and W terminals.
Red
Blue
White
135Ω
MCP Modulating a 135Ω Boiler
135Ω
Signal
R
W
B
135Ω
Modulating
Boiler
MCP Modulating a 135Ω Boiler
135Ω
Activation
Wiring the Floating Output
(MCF Only)
• The MCF Elite has 2 modulating output relays, each is rated at 1A
inductive load or 1/8 HP.
• Connect the MCF Red wire to the power source (transformer).
• Connect the other the wire of the transformer to the actuator Common
terminal.
• Connect the MCF White wire to the actuator (Open) terminal.
• Connect the MCF Blue wire to the actuator (Close) terminal.
135Ω
MCP Modulating a 135Ω Boiler
Floating
Motorized Valve
Common (Red)
Close (Blue)
Open (White)
Transformer
120VAC
Floating
Signal
Close
Open
Comm
135Ω
Wiring the System Output to a Boiler
• If the boiler requires an activation signal, wire the two Yellow wires to the
boiler circuit TT terminals.
• The MC Elite does not source any output power to the boiler.
• Select H/C unit from the Relay Output mode on the Startup menu. See
"Relay Output" on page 12.
Boiler Activation
(Yellow)
135Ω
MCP Modulating a 135Ω Boiler
135Ω
System
o
F
o
F
YSTEM
135Ω
MCP Modulating a 135Ω Boiler
135Ω
Signal
Boiler
Activation
Red
Blue
White
135Ω
MCP Modulating a 135Ω Boiler
135Ω
Wiring the System Output to a Pump
• The MC Elite will control the system pump up to 1 A (1/8 HP).
• Wire the two Yellow wires to the System Pump circuit.
• The MC Elite does not source any output power to the pump. The relay
makes when energized to switch the power to the pump.
• Select Pump from the Relay Output mode on the Startup menu. See
"Relay Output" on page 12.
135Ω
MCP Modulating a 135Ω Boiler
System Pump
(Yellow) 120 VAC
MCF Modulating a Floating Actuator
135Ω

10 MC-Elite Installation and Operation Manual
HT# 059069-00 D
Button and Navigating Menus
The MC Elite has three buttons.
• The SET button function varies. When in the Default Screen, pressing
the SET Button enters the MENU. When in the menus and settings, the
SET Button accepts the selected entry or setting value.
• When in the menus, the ▼ and ▼ buttons will scroll through the menu
options. Also, they can be used to change the setting of a specic
function. i.e., change the Set Point, outdoor Cutoff, or System Trim.
• At the end of every menu there is a <Back> option that allows the user
to go back one menu level. If the SET Button was held down for three
seconds on the <Back> option, the display will go back to the default
screen.
SET
SET
SET
SET
SET
Setting the Control to Factory Default
To Reset the MC Elite control to its original factory defaults, power down the control. Hold
down the SET and DOWN buttons while powering the control back up until the "Loading
Default Values" screen appears. The Display will direct you to the Startup menu after the
defaults are loaded to program the control.
SET
Loading Default
Values...
STARTUP SETTINGS
• When the control is initiated for the rst time or after a reset the control to factory defaults, it will start its operation with
the Startup Menu. Later, the Startup menu can be accessed as an option from the main menu.
• An option must be accepted in each screen to move to the next screen until all Startup settings are completed.
• The System Startup menu sets the main operating modes that apply to the application. These settings must be set by
the installer.
Startup Menus
HEAT-TIMER CORP.
V1.00 c 2008
DIGI-SPAN ELITE
MCA
Loading Default
Values...
STANDARD
English
Metric
SENSOR FAULT:
Output On
Output Off
SETUP COMPLETE!
PRESS SET
SYSTEM= 68 F
TARGET= 150 F
SET
SET
SET
SET
CONTROL MODE:
Outdoor Reset
Set Point
-SENSOR TYPE--
Temp. 230F
Pres. 30psi
Pres. 100psi
Pres. 200psi
Pres. 300psi
100psiVacuum 30in
Humidity %RH
Temp. 110C
Pres. 0.250MPa
Pres. 0.600MPa
Pres. 1.000MPa
Pres. 1.600MPa
Default Screen
APPLICATION:
Heat-BreakOnRise
Cool-MakeOnRise
MOD. SIGNAL:
0-10V
2-10V
0-5V
1-5V
4-20mA
MOD. TARGET:
Valve
H/C unit
RELAY OUTPUT:
H/C unit
Pump
MCF Only
------MAIN------
Set Point 150 F
<Out. Reset>
<Settings>
<Maintenance>
<Sys. Startup>
<Info>
<Back>
MCP Only
MCA Only
Standard
Options: English, Metric Default: English
SET
SET
/MENU/<System Startup>/Standard
• The MC Elite is capable of displaying all sensor and setting values in one of the two
Standards.
STANDARD
English
Metric

MC-Elite Installation and Operation Manual 11
HT# 059069-00 D
• If English is selected, sensor types in ˚F (Fahrenheit), PSI (Pounds/Square inch), and
Hg (Inches of Mercury for Vacuum) will be available.
• If Metric is selected, sensor types in ˚C (Celsius), MPa (Million Pascal), and mm
(Millimeter of Mercury for Vacuum) will be available.
• %RH (Relative Humidity) will be available in both options.
-SENSOR TYPE--
Temp. 230F
Pres. 30psi
Pres. 100psi
Pres. 200psi
Pres. 300psi
100psiVacuum
30inHumidity %RH
Temp. 110C
Pres. 0.250MPa
Pres. 0.600MPa
Pres. 1.000MPa
Pres. 1.600MPa
Sensor Type
Options: Temp.230˚F/110˚C, Pressure: 30PSI/0.25MPa, 100PSI/0.60MPa,
200PSI/1.0MPa, 300PSI/1.6MPa, Vac. 30Hg/760mm, and Humidity %RH Default:
Temp.230˚F/110˚C
SET
SET
/<System Startup>/Standard/Sensor Type
• The Sensor Type available options depend on the Standard option selected from the
previous menu.
• This option determines the type of Sensor that can be used. The MC Elite will measure
the input terminals that are associated with the Sensor Type selected. See "Sensor
Type Table" on page 6.
Control Mode
(Only When Sensor Type=Temp.)
Options: Outdoor Reset, Set Point Default: Outdoor Reset
SET
SET
/<System Startup>/Standard/Sensor Type/Control Mode
• The new MC Elite has two heating logics. Outdoor Reset; varies the system
temperature set
point/target based on outdoor temperature. This selection adds several menu options
to adjust and ne-tune the reset ratio curves: Reset Ratio, Offset, Min Water temp, Max
Water temp, and outdoor Cutoff. In addition, a customized reset ratio curve will be
available for specialized applications.
• Set Point; gives the installer the exibility of selecting a xed set point. In this case, the
outdoor Cutoff option will be available only if an outdoor sensor was installed.
CONTROL MODE:
Outdoor Reset
Set Point
Application
(Not Available with Outdoor Reset)
Options: Heat-BreakOnRise, Cool-MakeOnRise Default: Heat-BreakOnRise
SET
SET
/<System Startup>/Standard/Sensor Type/Control Mode/Application
• In Heat-Break-On-Rise mode, the control will start its System relay and modulate the
output when the sensor value is below the Target.
• In Cool-Make-On-Rise mode, the control will start its System relay and modulate the
output when the sensor value is above the Target.
APPLICATION:
Heat-BreakOnRise
Cool-MakeOnRise
Modulation Signal
(MCA Only)
Options: 0-10V, 2-10V, 0-5V, 1-5V, and 4-20mA Default: 0-10V
SET
SET
/<System Startup>/Standard/Sensor Type/Control Mode/.../Mod.Signal
• The MCA Elite can connect to a variety of modulating outputs that range from voltages
to current.
• Select the Modulation Signal based on the equipment the MCA Elite is controlling.
MOD. SIGNAL:
0-10V
2-10V
0-5V
1-5V
4-20mA
Modulation Target
(MCA and MCP Only)
Options: Valve, H/C unit Default: Valve
SET
SET
/<System Startup>/Standard/Sensor Type/Control Mode/.../Mod. Target
• The MCA and MCP Elite controls can modulate either a valve or a Heating/Cooling unit.
When Heating/Cooling unit is selected, a Relay Output option will be available to select
the output relay functionality (See next setting). In addition, a Purge delay option will be
added to the Settings menu. See "Purge" on page 16.
• However, when Valve is selected, the output relay will be assumed to operate a pump.
MOD. TARGET:
Valve
H/C unit

12 MC-Elite Installation and Operation Manual
HT# 059069-00 D
Relay Output
(Available Only when Modulation Target=H/C Unit)
Options: H/C unit, Pump Default: H/C Unit
SET
SET
/<System Startup>/Standard/Sensor Type/Control Mode/.../Relay Output
• If the Modulation Target was set to H/C Unit, the Relay Output selection will determine
the type of equipment being controlled by the System output (Yellow wires).
• H/C Unit option is designed to control a boiler or a chiller. In this case, the relay acts as
an activation signal whenever there is a need for the modulating unit to start. A Purge
option will be available to start the relay before any modulation output. See "Purge" on
page 16. In addition, the Run-On setting can act as a soft-off delay. See "Run-On" on
page 17.
• If the Relay Output was set to Pump, it will be energized whenever the outdoor
temperature is below the outdoor Cutoff in Heating or above the Outdoor cutoff in
Cooling.
RELAY OUTPUT:
H/C unit
Pump
Sensor Fault
Options: Output On, Output Off Default: Output On
SET
SET
/<System Startup>/Standard/Sensor Type/Control Mode/..../Sensor Fault
• The Sensor Fault setting determines the operating status of the modulation output and
the System output relay when a sensor reads Short or Open. On a sensor fault, the Set
Point will indicate FAULT TGT=ON or OFF to indicate the condition of the output and
the faulty sensor will read Short or Open to indicate the condition of the sensor.
Reset Mode
• When Output-On is selected, the MC Elite will modulate its output to 100% (MCA and
MCP Elite) or energize the Open relay (MCF Elite) when the System reads Short or
Open and the Outdoor is below the outdoor Cutoff in heating or above the outdoor
Cutoff in Cooling. When the Outdoor reads Short or Open, the MC Elite will change the
Target to the Maximum Target.
• When Output-Off is selected, the MC Elite will modulate the output to 0% (MCA and
MCP Elite) or energize the Close relay (MCF Elite) when the System reads Short or
Open. However, when the Outdoor reads Short or Open, the MC Elite will change the
Target to the Minimum Target.
Set Point Mode
• When Output-On is selected, the MC Elite will modulate its output to 100% (MCA and
MCP Elite) or energize the Open relay (MCF Elite) when the System sensor reads Short
or Open.
• When Output-Off is selected, the MC Elite will modulate the output to 0% (MCA and
MCP Elite) or energize the Close relay (MCF Elite) when the System sensor reads Short
or Open.
• The Outdoor Sensor Short or Open status will not affect the control operation in Set
Point mode.
SENSOR FAULT:
Output On
Output Off
Setting the Control to Factory Default
To Reset the MC Elite control to its original factory defaults, power down the control. Hold
down the SET and ▼ buttons while powering the control back on until the "Loading
Default Values" screen appears. The Display will direct you to the Startup menu
after the defaults are loaded to program the control. See "Startup Menus" on page 10.
SET
Loading Default
Values...

MC-Elite Installation and Operation Manual 13
HT# 059069-00 D
OPERATING SETTINGS
(Click
SET
SET
Button)
• The operating menus are for adjusting and ne-tuning the system for enhanced operation and more fuel savings.
Different Startup Menu options will offer different Operating menus.
Operating Menus
------MAIN------
Set Point 70 F
<Out. Reset>
<Settings>
<Maintenance>
<Sys. Startup>
<Info>
<Back>
Set Point:
70 F
----SETTINGS----
Gain 0
Diff. 5 F
Purge 2.0m
Run-On 0.0m
Setback 20 F
<Back>
Gain:
0
MCF V1.00
Temp.230 F
Set Point
Heat-BreakOnRise
FAULT: Output On
Set SYS Temp 1:
100 F
-OUTDOOR RESET--
Reset Ratio 7
Offset +0 F
Cutoff 70 F
Min Tgt. 80 F
Max Tgt. 240 F
<Back>
Cutoff:
70
Reset Ratio O/S:
Custom
1(8.00 / 1.00)
2(4.00 / 1.00)
3(3.00 / 1.00)
4(2.00 / 1.00)
5(1.50 / 1.00)
6(1.25 / 1.00)
7(1.00 / 1.00)
8(1.00 / 1.25)
9(1.00 / 1.50)
10(1.00 / 2.00)
11(1.00 / 3.00)
12(1.00 / 4.00)
At OD Temp 1:
70 F
Set SYS Temp 2:
170 F
At OD Temp 2:
0F
Offset:
+0 F
Min Target:
80 F
Max Target:
200 F
Purge:
2.0m
Setback:
10 F
Boost:
No
Yes
Set Point
Reset
MOD Targ.=H/C Unit
SYSTEM= 68 F
TARGET= 150 F
SET
SET
SET
SET
Default Screen
Relay Run-On:
0.0m
MOD Targ.=H/C Unit
Differential:
5F
Set Point
(Available when Control Mode = Set Point)
Options: Varies based on Sensor Type.
SET
SET
/Set Point
• The Set Point option provides the user with an adjustable xed Target to control the
system.
• If an Outdoor Sensor was connected, the outdoor Cutoff will show as the next menu.
• In temperature heating systems, the Set Point should be set above the boiler manufacturer
minimum water temperature requirements to protect the boilers and compensate for the
system piping temperature loss.
Set Point:
70 F 140 F
SYSTEM= 68 F
TARGET= 140 F
ALERT
The Set Point must be
set below the boiler Hi-
Limit setting for better
system control.

14 MC-Elite Installation and Operation Manual
HT# 059069-00 D
Reset Ratio
(Available when Control Mode = Outdoor Reset)
Options: From 1(8.00º/1.00º) to 12(1.00º/4.00º), Custom Default: 7(1.00º/1.00º)
SET
SET
/<Out. Reset>/Reset Ratio
• The Reset Ratio changes the Target temperature based on the outdoor temperature.
The colder it gets outside, the hotter the Target will be. The Ratio is measured as;
Outdoor (O): System Water (S). See "Reset Ratio Concept" on page 4.
• With a 1.00:4.00 ratio, the System water temperature will increase rapidly as the
outside temperature falls hitting the maximum default water temperature of 240°F at
35°F outdoor temperature. With a 4.00:1.00 ratio, the System water temperature will
increase slowly as the outside temperature falls.
• The Reset Ratio controls the amount of heat entering the heating system based
on the outdoor temperature. A higher numbered Reset Ratio will result in a higher
Calculated water temperature. If the application has radiant heat, a lower numbered
Reset Ratio curve should be selected. See "Radiation Type Settings" on page 4.
• If required: Adjust the Reset Ratio in cold weather. If the ambient building
temperatures is too cold in cold weather, move the ratio to a higher selection. That
is, if 1.00:1.00 was initially selected, change the selection to 1.00:1.25. If the
building temperature is too warm in cold weather, move the ratio to a lower selection.
That is, if 1.00:1.00 was initially selected, change the selection to 1.25:1.00.
• The Custom option gives the user the capability of creating a specialized Reset Ratio
curve. The Offset, Minimum Target and Maximum Target settings will still apply to
the customized curve.
Reset Ratio O/S:
Custom
1(8.00 / 1.00)
2(4.00 / 1.00)
3(3.00 / 1.00)
4(2.00 / 1.00)
5(1.50 / 1.00)
6(1.25 / 1.00)
7(1.00 / 1.00)
8(1.00 / 1.25)
9(1.00 / 1.50)
10(1.00 / 2.00)
11(1.00 / 3.00)
12(1.00 / 4.00)
Custom Reset Ratio
Options: SYS Temp 1, 2 (-10ºF/21ºC) to (210ºF/99ºC) Default: 1(100ºF/38ºC)
Default: 2(171ºF/77ºC)
Options: OD Temp 1, 2 (-10ºF/-23ºC) to (100ºF/38ºC) Default: 1(70ºF/21ºC)
Default: 2(0ºF/-18ºC)
SET
SET
/<Out. Reset>/Reset Ratio/Custom
• Use the Custom option when the standard reset ratios do not provide the perfect
building heat-loss equilibrium.
• The Custom Reset Ratio requires the assignment of two points on the reset ratio
diagram and use the line connecting the two points as the customized reset ratio
curve. Each of the two points will need a specic System and Outdoor Temperature
to identify it on the diagram. To Specify the rst point, set Sys Temp 1 and OD Temp
1. Then, set Sys Temp 2 and OD Temp 2 to set the second point on the curve.
• The chart shows a customized curve 6(O):5(S). If the outdoor temperature reaches
30ºF, the system target will be 145ºF.
• Remember that the Min Target and Max Target apply to all reset ratios including the
custom reset ratio ones.
Set SYS Temp 1:
100 F
At OD Temp 1:
70 F
Outdoor Temperature (in °F)
70 60 50 40 2030 0 -1010 -20
120
140
130
150
160
170
180
100
110
Water Temperature (in °F)
Custom Reset Ratio
Point1: System=120°F
Oudoor=60°F
Point2: System=170°F
Oudoor=0°F
Point1
Point2
Customized Reset Ratio
Max Target
Min Target
Offset
(Available when Startup Control Mode = Outdoor Reset)
Options: From -40ºF/-22ºC to +40ºF/+22ºC Default: 0ºF/0ºC
SET
SET
/<Out. Reset>/Offset
• The Offset setting adds or subtracts a xed number of degree to the Target. For
example, if the Set Point temperature was 130°F and the Offset was changed from
0° to +10°, then the Set Point temperature would increase to 140°F.
• If required: Adjust the Water Offset in mild weather.
• If the ambient building temperature is too warm in the mild weather, decrease the
Offset. If the ambient building temperature is too cold in the mild weather, increase
the Offset. The rule of thumb for baseboard radiation is to change the Offset 4°F for
every 1°F you wish to change the building temperature. In radiant heat applications,
change the Offset 1°F or 2°F for every 1°F you wish to change the building
temperature. See "Radiation Type Settings" on page 4.
Offset:
+0 F
Outdoor Temperature (in °F)
70 60 50 40 2030 0 -1010 -20
120
140
130
150
160
170
180
100
110
Water Temperature (in °F)
Target Offset
Offset=10°F
Reset Ratio=1.5 : 1.0
Reset Ratio
Max Target
Min Target
Reset Ratio + 10F Offset
Min Target=120°F
Max Target=170°F

MC-Elite Installation and Operation Manual 15
HT# 059069-00 D
Outdoor Cutoff
Options: Off, 30ºF/0ºC to 75ºF/25ºC, On Default: 70ºF/21ºC
SET
SET
/Set Point/Cutoff in Set Point
SET
SET
/<Out. Reset>/Cutoff in Reset
• The outdoor and Cutoff temperatures can be viewed from the default screen by clicking
the ▲ or ▼ buttons.
• In heating, when the outdoor temperature falls to the adjustable outdoor Cutoff
temperature, the MC Elite will control the System relay to provide heat. However, in
cooling, when the outdoor temperature rises to the adjustable outdoor Cutoff temperature,
the MC Elite will control the System relay.
• The outdoor Cutoff setting has a built-in 2F° that is add to the outdoor Cutoff when in
heating mode. However, it is subtracted from the outdoor Cutoff when in cooling mode.
• For example; In heating, when the outdoor temperature rises to the outdoor Cutoff plus
a 2°F differential, the MCA/MCP Elite will modulate the output to 0%. The MCF Elite will
energize the Close relay for six minutes to guarantee valve closure. The System relay will
remain active for the Run-On delay then de-energize.
• In addition to the temperature range of the outdoor Cutoff setting, it can be set to ON or
OFF. If ON is selected, the System relay will run regardless of the Outdoor temperature
and the boilers will be active to hold the calculated water temperature. If OFF is selected,
the System and Boiler relays will always be off.
Cutoff:
70
Minimum Target
(Available when Control Mode = Outdoor Reset)
Options: From 70ºF/21ºC to 170ºF/77ºC Default: 80ºF/27ºC
SET
SET
/Set Point/<Out. Reset>/Min. Tgt
• The Minimum Target Temperature must be set to the boiler manufacturer’s specication.
The MC Elite will calculate the Target based on the Outdoor temperature, the Reset Ratio,
and the Offset value. The MC Elite will control the boiler/Valve to hold the higher of either
the calculated temperature or the Minimum Target temperature.
• The Minimum Target temperature must be at least 20°F lower than the Maximum Target
temperature. See next setting.
Min Target:
80 F
Maximum Target
(Available when Control Mode = Outdoor Reset)
Options: From 90ºF/32ºC to 240ºF/116ºC Default: 240ºF/116ºC
SET
SET
/Set Point/<Out. Reset>/Max. Tgt
• This is the highest Target temperature the MC Elite will circulate through the system.
• When used in a radiation system, it should be set according to the tubing or oor
manufacturer’s specication.
• The Maximum Target temperature must be at least 20°F higher than the Minimum Target
temperature. See previous setting.
Max Target:
240 F
Setback
Options: Varies based on Sensor Type. See "Sensor Type Table" on page 6.
SET
SET
/Settings>/Setback.
• The Setback feature can be used to provide the MC Elite with a lower Target in heating or
higher Target in cooling when less output is required during nights or weekends.
• The Setback Target will appear on the main display indicating SBC TGT=140oF.
• For example; in heating, when the calculated temperature is 160°F and the Setback is set
to 20°F, a setback call will change the Target to (160°F - 20°F) 140°F.
• If Boost was enabled, it will run after the Setback ends. See "Boost" on page 16.
• The Setback is activated by closing/shorting the T3+ and T3- terminals using an external
timer, control, or a switch. See "Wiring the Setback/Boost" on page 7.
Setback:
10 F

16 MC-Elite Installation and Operation Manual
HT# 059069-00 D
Boost
Options: Yes, No Default: No
SET
SET
/Settings>/Setback/Boost.
• The morning Boost is designed to return the building to comfortable ambient temperatures
after the Setback period. The MC Elite will accomplish this by running elevated set
point in heating (will add Setback setting to the calculated Target) or reduced set point in
cooling (will subtract Setback setting from the calculated Target) for 30 minutes after the
opening of the setback terminals T3± terminals. That is, in heating, if the normal set point
was 145˚F and the Setback setting was 20˚F, the boost will raise the system calculated
temperature to 165˚F for 30 minutes after the setback.
• The Boost Set Point will appear on the main display indicating BST TGT=165F .
Boost:
No
Yes
MODULATION SETTINGS
Gain
Options: From -10 to +10 Default: 0
SET
SET
/<Settings>/Gain
• The Gain adjusts the aggressiveness of the MC Elite PID logic. It does that by controlling
the amount of modulation required in response to the changes of the system temperature/
pressure when it deviates from the Target.
• A Gain of 0 is a good starting point for all systems.
• If during normal load conditions, the system value tends to oscillate, decrease the Gain by
two numbers (for example, from 0 to -2). Wait for at least 15 minutes before evaluating
the effect on the system.
• If, during normal load conditions the system value tends to remain consistently below the
Target in heating (or consistently above the Target in cooling), increase the Gain by two
numbers (for example, from 0 to 2). Wait for at least 15 minutes before evaluating the
effect on the system.
Gain:
0
Differential
(Available when Mod. Target = H/C Unit on MCA/MCP)
Options: Varies based on Sensor Type. See "Sensor Type Table" on page 6.
SET
SET
/<Settings>/Diff.
• The Differential is a band around the Target where the MCA/MCP Elite will make small or
no changes to the heating/cooling unit.
• A smaller Differential setting normally result in tighter control of the set point but will tend
to oscillate the system. Larger Differential values normally provide a more stable system
performance, but the system may deviate further from the set point.
Differential:
5F
Purge
(Available when Mod. Target = H/C Unit on MCA/MCP)
Options: 0.0 to 10.0 minutes Default: 2.0 minutes
SET
SET
/<Settings>/Purge
• Most units must go through a purge cycle before they are brought on line.
• When the MCA/MCP Elite activates a unit, it does not start to calculate its output until the
Purge delay is over. This allows the unit to fully come on and begin producing output.
• The Purge delay helps prevent short cycling of newly activated units. Once the unit is
activated, it MUST run through the entire Purge period before starting to modulate. The
message Purge: 30sec will display the Purge countdown.
• The Purge setting MUST be set to the time required by the unit's manufacturer
specication.
Purge:
2.0m

MC-Elite Installation and Operation Manual 17
HT# 059069-00 D
Run-On
Options: From 0 min to 60 min Default: 2 min
SET
SET
/<Settings>/Run-On
• If the Relay Output was set to Pump, the System relay will energize whenever the outdoor
temperature is below the outdoor Cutoff in heating or above it in cooling. See "Relay
Output" on page 12. When the outdoor temperature increases 2°F above the outdoor Cutoff
or when the EXT+ and EXT- terminal inputs are opened, the output relay will stay on for
the Run-On period. This allows the system to dissipate the residual energy within its units
back into the system.
• The Run-On time should be set based on the size and type of the equipment controlled.
Relay Run-On:
2.0m
MAINTENANCE SETTINGS
Maintenance Menus
System Trim:
+0 F
--MAINTENANCE--
Sys. Trim +0 F
Out. Trim +0 F
Output Auto
Valve Auto
<Back>
Outdoor Trim:
+0 F
Output Mode:
Auto
Manual
Valve Mode:
Auto
Close
Open
MCA / MCP
Only
MCF Only
------MAIN------
Set Point 70 F
<Out. Reset>
<Settings>
<Maintenance>
<Sys. Startup>
<Info>
<Back>
SYSTEM= 68 F
TARGET= 150 F
SET
SET
SET
SET
Default Screen
Output Amount:
50%
System and Outdoor Trim
Options: Varies based on Sensor Type. See "Sensor Trim Table" on page 17.
SET
SET
/<Maintenance>/Sys. Trm or Out. Trim
• The Heat-Timer system sensors are very accurate, and normally require no calibration.
However, sometimes it may be desirable to make small adjustments to the displayed value.
• Do not use the Trim setting to make the Outdoor sensor match the one reported on the
radio or TV. The outdoor temperature can vary widely over a broadcast range.
System Trim:
+0 F
Outdoor Trim:
+0 F
Sensor Trim Table
ENGLISH SENSOR
TYPE
TRIM (Default=0) METRIC SENSOR
TYPE
TRIM (Default=0) SENSOR
TERMINALS
Range Range
Temp. 230˚F (SYS) -20˚F to +20˚F Temp. 120˚C (SYS) -11˚C to +11˚C T1, COM
Temp. 230˚F (OD) -20˚F to +20˚F Temp. 120˚C (OD) -11˚C to +11˚C T2, COM
Pressure 30 PSI -3.0 to +3.0 PSI Pressure 0.250 MPa -0.025 to +0.025 MPa P+, P-
Pressure 100 PSI -10 to 10 PSI Pressure 0.600 MPa -0.06 to +0.06 MPa P+, P-
Pressure 200 PSI -20 to +20 PSI Pressure 1.000 MPa -0.1 to +0.1 MPa P+, P-
Pressure 300 PSI -30 to +30 PSI Pressure 1.600 MPa -0.16 to +0.16 MPa P+, P-
Vacuum 30 Hg -3.0 to +3.0 Hg Vacuum 760 mm -80 to +80 mm P+, P-
Humidity +10 to -10%RH P+, P-

18 MC-Elite Installation and Operation Manual
HT# 059069-00 D
Output Mode
(Available on MCA/MCP Only)
Options: Auto, Manual Default: Auto
SET
SET
/<Maintenance>/Output
• The Manual Output Mode provides a way to bypass the control logic to adjust the
modulating output manually.
• The Output mode is primarily used for equipment testing and troubleshooting.
• When set to Manual, the Output Amount menu can be adjust the amount of manual
modulation as a percent of the total range.
• When in Manual, the output will modulate to the set percent regardless of the Enable/
Disable, the outdoor Cutoff, or sensor fault status.
• To revert to control PID operation, the Output Mode must be set to Auto.
Output Mode:
Auto
Manual
Output Amount:
50%
Valve Mode
(Available on MCF Only)
Options: Auto, Close, Open Default: Auto
SET
SET
/<Maintenance>/Valve
• The Valve Mode provides a way to manually bypass the control PID logic and open or
close the valve.
• The Valve mode is primarily used for equipment testing and troubleshooting.
• To revert to control PID operation, the Output Mode must be set to Auto.
Valve Mode:
Auto
Close
Open

MC-Elite Installation and Operation Manual 19
HT# 059069-00 D
TROUBLESHOOTING
Sensors and LEDs
No Display or LED Lights
Check the power to the MC Elite. The MC Elite requires
120VAC power to the Black wires or 24VAC to the right-most
terminals. Turn the power off and back on to restore the
display. If unsuccessful, make sure that the control's Display
Cover is securely mounted to the Base.
System or Outdoor Reads OPEN or SHORT
If the sensor reads Open, short the sensor input terminals. The
display should read Short. If it doesn’t, the MC Elite may be
damaged. If it does read Short, either the sensor is damaged
or its wiring is not continuous. Check the sensor wiring.
If the sensor reads Short, remove the wires from the input
terminals. The display should read Open. If it doesn’t read
Open, the MC Elite may be damaged. If it does read Open, the
sensor is damaged and needs to be replaced.
Temperature Sensor Reads an Incorrect Temperature
Remove the sensor wires from the input terminals. The display
should change to read Open. If it doesn’t, the MC Elite may be
damaged. Take an ohm reading across the detached sensor
wires. The ohm reading should correspond to the Temperature
Sensor Chart. If the difference is within 5°F adjust the sensor
Trim. Otherwise, the sensor may be damaged.
System Sensor Reads an Incorrect Pressure
First make sure that the pressure transducer installed matches
the Sensor Type selected from the Startup Menu. See "Sensor
Type" on page 11. Then check if the reading is a specied
amount above or below the actual pressure, adjust it using the
System Trim. If the reading is Short, remove the wires from the
sensor terminals. The display should change to read Open.
If it does not, the MC Elite may be damaged. Otherwise, if it
does, then the pressure transducer is damaged and needs to
be replaced.
No Heat - All LEDs are OFF
Check the outdoor temperature and the outdoor Cutoff
readings. If the outdoor temperature is above the outdoor
Cutoff, the MC Elite will not give heat. See "Outdoor Cutoff"
on page 15. If the display shows TSTAT OPEN then, check
the EXT+ and EXT- terminals. If the terminals are not jumped
together, the MC Elite will not give heat. See "Wiring the
Enable/Disable" on page 7.
No Heat - System LED is ON
First, make sure that the system pump is running. Disconnect the MC Elite's Yellow wires. Then, test for continuity
across the Yellow wires. If the wires are continuous, the MC Elite is calling for the System Pump to run and the problem
is not with the MC Elite. Check the power source to the pump and the pump operation.
Pressure Sensor Chart
Input
(in mA)
0 - 30
PSI/Hg
Range
0 - 100
PSI/RH%
Range
0 - 200
PSI
Range
0 - 300
PSI
Range
4 0 0 0 0
4.08 1
4.16 1 2
4.53 1 10
5.07 2 20
5.6 3 10 20 30
7.2 6 20 40 60
8.8 9 30 60 90
10.4 12 40 80 120
12 15 50 100 150
13.6 18 60 120 180
15.2 21 70 140 210
16.8 24 80 160 240
18.4 27 90 180 270
20 30 100 200 300
Temperature Sensor
Chart
TEMPERATURE Value
(in
Ohms)
°F°C
OPEN 150000
-30 -34 117720
-20 -29 82823
-10 -23 59076
0 -18 42683
10 -12 31215
20 -7 23089
25 -4 19939
30 -1 17264
35 2 14985
40 4 13040
45 7 11374
50 10 9944
55 13 8714
60 16 7653
70 21 5941
80 27 4649
90 32 3667
TEMPERATURE Value
(in
Ohms)
°F°C
100 38 2914
110 43 2332
120 49 1879
130 54 1524
140 60 1243
150 66 1021
160 71 842
170 77 699
180 82 583
190 88 489
200 93 412
210 99 349
220 104 297
230 110 253
240 116 217
250 121 187
SHORT 100

20 MC-Elite Installation and Operation Manual
HT# 059069-00 D
Actuator Response
MCA Elite Does Not Move the 4-20mA Actuator
Check the Set Point (page 13) and Differential (page 16) settings. If the System Sensor reading is within the Differential
band, the MCA Elite may not adjust the modulation position. Otherwise, check the external DC power supply for a
voltage between 30 to 36VDC. Then, measure the current. It should measure between 4 and 20mA. If it does not, the
MCA Elite may be damaged.
MCA Elite Does Not Move the Voltage Actuator
First, check that the modulation signal of the actuator match the Modulation signal setting in the Startup menu. See
"Modulation Signal" on page 11. Check the Set Point (page 13) and Differential (page 16) settings. If the System Sensor
reading is within the Differential band, the MCA Elite may not adjust the motor position. If this is not the case, use a
DC volt meter to measure voltage from the Blue and Red MCA Elite output wires. The meter should register a voltage
within the voltage range selected from the Modulation Signal in the Startup menu. If it does not, MCA Elite may be
damaged.
MCP Elite Does Not Move the 135Ω Actuator
Check the Set Point (page 13) and Differential (page 16) settings. If the System Sensor reading is within the Differential
band, the MCP Elite may not adjust the modulation position. If this is not the case, the MCP Elite output can be tested
with an ohm meter. Disconnect the MCP Elite modulation output wires (Red, White, and Blue). If the System value has
been below the Set Point, then an ohm reading between the Red to Blue wires should be less than 25Ω and the reading
from Red to White should be more than 110Ω. If the system value has been above the set point, then an ohm reading
from the Red to Blue wires should be more than 110Ω and the reading from Red to White should be less than 25Ω. If
the above tests fail, then the MCP Elite is damaged.
MCF Elite Does Not Move the Floating Actuator
First check the valve wiring. The MCF Elite does not source power to the actuator. Instead, a separate source of
power must be wired to the actuator. See "Wiring the Floating Output" on page 9. Next, remove any wires connected to
the Red, White, and Blue output wires. Switch the control Valve Mode to Close. There should be no continuity across
the White and Red wires. If continuity exist, the MCF Elite may be damaged. There should be continuity across the
Red and Blue wires. If continuity does not exist, the MCF Elite may be damaged.
MC Elite Does Not control The System to Hold the Set Point
If the system temperature/pressure is overshooting or undershooting the Set Point by a small amount, increase the
Differential (page 16) value. If the system temperature/pressure signicantly overshoots and undershoots the Set Point,
decrease the Gain (page 16) setting by one or two points. If the system temperature/pressure is almost always below
the Set Point, increase the Gain setting by one or two points. Wait approximately 15 minutes after each change before
evaluating the system.