Tekmar tekmarNet 2 Thermostat 529 User manual

tekmarNet®2 Thermostat 529
Installation & Operation Manual
D529
12/11
Zoning Replaces: 12/10
1 of 28 © 2011 D 529 - 12/11
The tekmarNet®2 Thermostat 529
provides operation for:
Two Stage Heat•
Introduction
Features
Zone Synchronization
Zone Post Purge
Intelligent Setback (Timer 033)
One touch overrides (User Switch)
Auto Heating Cycle
tekmarNet®2 Communication
compatible
Requires 2 wires
Two stage heat
Pulse Width Modulation
CSA C US Approved for use in USA
and Canada
Outdoor Temperature display
Air Group member
Backlight
Freeze Protection
Equipment Exercising
Floor Warming (Slab Sensor 079)
1 auxiliary sensor input
Room Temperature Limiting
Supports Radiant Floor Cooling
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Note
tN2 Zone Manager, Expansion
Module, Wiring Center or House
Control required for operation
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Congratulations on the purchase of your new tekmar thermostat.
This manual will step through the complete installation, programming and sequence
of operation for this control. At the back, there are tips for control and system
troubleshooting.
Getting Started
Preparation
tekmar or jeweller screwdriver
Phillips head screwdriver
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Wire Stripper•
Tools Required
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Materials Required
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2, #6 x 1” Wood Screws
18 AWG LVT Solid Wire
(Low Voltage Connections)
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Optional Adapter Plate 007 (for
installation on 2” x 4” gang box)
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Installation
Table of Contents
Getting Started ..............................2
Installation .........................................2
Caution..........................................2
Preparation....................................2
Removing The Thermostat Base...3
Mounting The Thermostat Base....3
Thermostat Wiring.........................4
Testing the Thermostat Wiring ......6
Mounting the Thermostat ..............6
Cleaning the Thermostat...............7
Switch Settings ..................................7
User Interface....................................8
Display...........................................8
Button Operation ...........................8
Symbols Description .....................8
Settings ....................................9-16
Sequence of Operation.................... 17
Heating Operation ....................... 17
Air Group Operation ....................19
Floor Cooling...............................19
Schedules ...................................20
Scenes (System Override) ..........20
Troubleshooting ...............................21
Error Messages......................21-24
Frequently Asked Questions .......25
Job Record..................................26
Technical Data.............................27
Limited Warranty and Product
Return Procedure ........................28
Caution
Improper installation and operation of this control could result in damage to the
equipment and possibly even personal injury or death. It is your responsibility
to ensure that this control is safely installed according to all applicable codes and
standards. This electronic control is not intended for use as a primary limit control.
Other controls that are intended and certified as safety limits must be placed into
the control circuit.

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Choose the placement of the thermostats early in the construction process to
enable proper wiring during rough-in.
Consider the following:
Interior Wall.
Keep dry. Avoid potential leakage onto the control.
Relative Humidity max 80% up to 88°F (31°C) decreasing linearly to 50% RH
at 104°F (40°C). Non-condensing environment.
No exposure to extreme temperatures beyond 32-122°F (0-50°C).
No draft, direct sun, or other cause for inaccurate temperature readings.
Away from equipment, appliances, or other sources of electrical interference.
Easy access for wiring, viewing, and adjusting the display screen.
Approximately 5 feet (1.5 m) off the finished floor.
The maximum length of wire is 1000 feet (300 m).
Strip wire to 3/8” (10 mm) for all terminal connections.
Use standard 18 AWG wire for the tN2 connections.
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Installation Location
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Removing The Thermostat Base
Push
tab
1Remove thermostat
from base
2
To remove the thermostat base:
Place a small slot screwdriver or similar
tool into the slot located on the top of
the thermostat.
While pushing down against the plastic
tab, pull the thermostat away from the
thermostat’s base.
•
•
Mounting The Thermostat Base
Stud
Switch
Box
Thermostat
Base
007 Adaptor
Plate
31/4”
(83 mm)
If a single gang switch box is used,
an Adaptor Plate 007 is required to
mount the thermostat to the box.
Fasten the base of the
thermostat to the adaptor plate.
Feed the wiring through the
openings in the back of the
adaptor plate and thermostat.
Use the upper and lower screw
holes to fasten the adaptor plate
to the box.
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Mounted on switch box

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If a switch box was not used, mount the
thermostat directly to the wall.
Feed the wiring through the openings in
the back of the thermostat.
Use screws in the screw holes to fasten the
thermostat to the wall. At least one of the
screws should enter a wall stud or similar
rigid material.
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Stud
23/8”
(60 mm)
screwhole
23/8”
(60 mm)
screwhole
Thermostat
Base
Wall
Mounted on wallboard
Thermostat Wiring
The thermostat operates a single heating system zone with two stages of heat.
Power and communication are provided to the thermostat by connecting the tN2
terminals on the thermostat to the tN2 terminals on a tN2 Wiring Center, House
Control, Zone Manager or Zone Expansion Module. tN2 terminals are not polarity
sensitive.
Connect the optional auxiliary sensor wires to the sensor terminals 3 and 4.
12 34
Slab Sensor 079, or
Outdoor Sensor 070, or
Indoor Sensor 076, 077, 084
tN2
Zone
tN2
1234
tNt 529
529
Two Stage Heat
Relays: 24V (ac) 2A
6
W2
5
Rh
Mmm YYYY Lot # 12345
Meets Class B: Canadian ICES FCC Part 15
1023-03
tN2
1
tN2
2
Switch Settings:
For instructions see brochure
Use at least 65°C conductors
ON
Sensor
34
Setback
Scene
Lock
Not used Not used Unlock
Off
Off
No Power
Heating Equipment
2nd Stage
Heating
R W
See 2nd stage heat wiring
options on opposite page

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Wiring 2nd Stage Heat
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The 529 thermostat can operate 2nd stage heat in two ways:
Method 1. Two-Stage Heating Using Wiring Center or Zone Manager
A two-stage thermostat is automatically detected when connected to Zone 1 or Zone
3 on a Wiring Center or Zone Manager. If there is no tN2 thermostat connected to
Zone 2 or Zone 4, these outputs will automatically operate the heating equipment
for 2nd stage heat.
Note: This 2nd stage wiring method is not compatible with the tN2 House Control
400, 401, 402, 403 and 406. Method 2 below must be used instead.
Method 2. Two-Stage Heating Using The Thermostat’s 2nd Stage Relay
If both Zone 2 or Zone 4 are in use, the 529 thermostat’s second stage relay must
be used. This relay will close when the thermostat calls for 2nd stage heat (Rh-W2),
and can be used to bring on the heating equipment.
Note: This 2nd stage wiring method must be used when a 529 thermostat is
connected to a House Control 400, 401, 402, 403, or 406.
Zone 1 Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
12 34
1234
tNt 529
529
Two Stage Heat
Relays: 24V (ac) 2A
6
W2
5
Rh
Mmm YYYY Lot # 12345
Meets Class B: Canadian ICES FCC Part 15
1023-03
tN2
1
tN2
2
Switch Settings:
For instructions see brochure
Use at least 65°C conductors
ON
Sensor
34
Setback
Scene
Lock
Not used Not used
Unlock
Off
Off
No Power
R W
Zone 1 Zone 2 Zone 3 Zone 4
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Zone 1 Zone 3
Stage 1 Stage 2 Stage 1 Stage 2
Two-Stage Terminal
Designation
Wiring Center or
Zone Manager
House Control
Wiring Center or
Zone Manager

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Testing the Thermostat Wiring
Testing the Power
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If the thermostat display turns on, this indicates that the thermostat is operating
correctly and there are no electrical issues. In the event that the display is off, or
the display is cycling on and off:
1. Remove the tN2 wires from the thermostat.
2. Use an electrical meter to measure DC voltage between the tN2 terminals.
If the DC voltage is 0 V (dc) for 20 seconds, then there is an open or short circuit
in the tN2 wires.
If the DC voltage is 0 V (dc) for 10 seconds and then is 23 to 24 V (dc) for 5
seconds, this indicates the wiring is correct.
3. Connect the thermostat to the tN2 wires connected to a zone on a House Control,
Wiring Center, or Zone Manager.
4. If the thermostat display is off, or is cycling on and off, move the thermostat to the
next available zone on the House Control, Wiring Center, or Zone Manager.
If the thermostat display remains permanently on, there may be a fault with the
previously tried zone on the House Control, Wiring Center, or Zone Manager.
If the thermostat display continues to be off, or is cycling on and off, there may
be a fault on the thermostat.
If a fault is suspected, contact your tekmar sales representative for assistance.
Testing the Heat Zone Output
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1. Press the button and set the heating temperature above the current room
temperature. Make sure the display does not show “WWSD” or “Floor Max”.
2. When the H1 symbol appears on the display, use an electrical meter to check
for voltage on the House Control, Wiring Center, or Zone Manager relay. The
voltage is 24 V (ac) for zone valves, and 120 V (ac) for zone pumps when
operating correctly.
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Mounting the Thermostat
To place the thermostat back on the
mounting base:
Place thermostat bottom tabs on
matching mounting base notches.
Pivot top of the thermostat
towards wall, ensuring wires clear
obstructions.
The top clasp makes a clicking
sound when properly closed.
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Pivot
Tab

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Switch Settings
Switches are set to “On”
position from the factory, and
do not require changing for
most applications.
12 34
1234
tNt 529
529
Two Stage Heat
Mmm YYYY Lot # 12345
Meets Class B: Canadian ICES FCC Part 15
1023-03
tN2
1
tN2
2
Switch Settings:
For instructions see brochure
Use at least 65°C conductors
ON
Sensor
34
Setback
Scene
Lock
Not used Not used Unlock
Off
Off
No Power
Relays: 24V (ac) 2A
6
W2
5
Rh
Switch Position Action
1
ON
SETBACK
The thermostat follows a programmable setback schedule
as a schedule member if available. Requires the installation
of a Timer 033 to use this feature.
OFF
OFF
The thermostat does not follow a programmable setback
schedule.
2
ON
SCENE
The thermostat responds to changes in the scene (system
wide manual overrides). Requires the installation of a User
Switch 479 to use this feature.
OFF OFF
The thermostat does not respond to scenes.
3
ON
LOCK ACCESS LEVEL
Locked to ‘User’ access level. Set to Lock when installation
completed.
OFF
UNLOCK ACCESS LEVEL
Unlock to allow ‘User’ and “Installer’ access level. Set to
Unlock during installation process.
tekmarNet®reset control must also be set to Unlocked
(Installer access level).
4
ON Not used
OFF Not used
The thermostats’s exterior can be cleaned using a damp cloth. Moisten the cloth
with water and wring out prior to wiping the control. Do not use solvents or cleaning
solutions.
Cleaning the Thermostat
12 34
1234
Mmm YYY L t#1234
Meets Class B: Canadian ICES
Switch Settings:
ON
Setback
Scene
Lock
Not used Not used Unlock
Off
Off

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SECONDARY DISPLAYMAIN DISPLAY
HEAT 1
Stage 1 is turned on.
HEAT 2
Stage 2 is turned on.
SUN
Operating at the occupied
(day) temperature.
MOON
Operating at the unoccupied
(night) temperature.
AWAY
Operating at the Away scene
temperature.
AIR GROUP
The air group is cooling.
Heating can start once the
cooling is finished.
LOCK
Locked to ‘User’ access level.
CLOCK
Operating on a
programmable schedule.
tekmarNet®
Communication is present.
WARNING SYMBOL
Indicates an error is present.
WARM WEATHER SHUT
DOWN
The heating system has been
shut off for the summer.
Display
Symbols Description
User Interface
Button Operation
Press the or the button to select the room temperature.

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Settings (1 of 8)
Display Range Access Description Set to
40 to 95°F
(4.5 to 35.0°C)
Default = 70°F
(21.0°C)
Installer User
SET ROOM HEAT Set the room heating temperature while in the event.
40 to 95°F
(4.5 to 35.0°C)
Default = 65°F
(18.5°C)
Installer User
SET ROOM HEAT Set the room heating temperature while in the event.
40 to 95°F
(4.5 to 35.0°C)
Default = 62°F
(16.5°C)
Installer
SET ROOM HEAT AWAY Set the room heating temperature while in the Away scene.
Continued on next page.
• Press and hold down both the and buttons for 2 seconds to change from one step to the next. • Release both buttons once the step has been reached. • Press the or the button to change the setting, if available. • Press and hold down both the and buttons for 2 seconds to go to the next step, OR • After 10 seconds of no button activity, the display goes back to normal operation. • Note: Set switch setting #3 and tekmarNet®system control to Unlock to change Access level to Installer.
Press
+
Together

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Settings (2 of 8)
Display Range Access Description Set to
40 to 122°F
(4.5 to 50.0°C)
Default = 72°F
(22.0°C)
Installer User
SET FLOOR HEAT Set the floor heating temperature while in the event. Available when:
A slab sensor is installed on the auxiliary sensor input AND Sensor setting in the Adjust menu is set to Floor AND Room Sensor setting in the Adjust menu is set to Off.
•
40 to 122°F
(4.5 to 50.0°C)
Default = 65°F
(18.5°C)
Installer User
SET FLOOR HEAT Set the floor heating temperature while in the event. Available when:
A slab sensor is installed on the auxiliary sensor input AND Sensor setting in the Adjust menu is set to Floor AND Room Sensor setting in the Adjust menu is set to Off.
•
Off, 30 sec, On,
On +
Default = 30 sec
Installer User
BACKLIGHT Select the backlight operation. Off = Permanently Off 30 = Temporary on for 30 seconds On = Permanently On On + = On during and off during
Continued on next page.

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Display Range Access Description Set to
°F or °C
Default = °F
Installer User
TEMPERATURE UNITS Press the or the button to change from °F to °C and vice versa.
Device Type with
Software Version,
Address
Installer User
DEVICE TYPE Display alternates between the Device Type (large number) with Software Version (upper right corner) and the thermostat address.
40 to 95°F
(4.5 to 35.0°C)
Default = 85°F
(29.5°C)
Installer
MAXIMUM SET ROOM HEAT Set the maximum room heating limit while in the event.
40 to 95°F
(4.5 to 35.0°C)
Default = 85°F
(29.5°C)
Installer
MAXIMUM SET ROOM HEAT Set the maximum room heating limit while in the event.
40 to 95°F
(4.5 to 35.0°C)
Default = 45°F
(7.0°C)
Installer MINIMUM SET ROOM HEAT
Set the minimum room heating limit.
Settings (3 of 8)
Continued on next page.

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Display Range Access Description Set to
Off, 40 to 122°F
(Off, 4.5 to
50.0°C)
Default = 72°F
(22.0°C)
Installer
User
SET FLOOR MINIMUM Set the floor minimum temperature while in the event. The floor minimum heats the floor even when the room temperature is satisfied. The measured floor temperature is shown in the upper right hand corner of the display. Available when:
Room Sensor setting in the Adjust menu is set to On AND A slab sensor is installed on the auxiliary sensor input AND Sensor setting in the Adjust menu is set to Floor.
• • •
Off, 40 to 122°F
(Off, 4.5 to
50.0°C)
Default = Off
Installer
User
SET FLOOR MINIMUM Set the floor minimum temperature while in the event. The floor minimum heats the floor even when the room temperature is satisfied. The measured floor temperature is shown in the upper right hand corner of the display. Available when:
Room Sensor setting in the Adjust menu is set to On AND A slab sensor is installed on the auxiliary sensor input AND Sensor setting in the Adjust menu is set to Floor.
• • •
Settings (4 of 8)
Continued on next page.

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Display Range Access Description Set to
40 to 122°F, Off
(4.5 to 50.0°C,
Off)
Default = 85°F
(29.5°C)
Installer
FLOOR MAXIMUM Set the floor maximum temperature in order to protect the floor covering. Available when:
Room Sensor setting in the Adjust menu is set to On AND A slab sensor is installed on the auxiliary sensor input AND Sensor setting in the Adjust menu is set to Floor.
• • •
1, 2, 3, 4
Default = 1 Installer
SCHEDULE Thermostat can follow schedule master 1, 2, 3, or 4. Available when:
Switch setting 1 is set to Setback (On Position).•
On or Off
Default = On Installer
ROOM SENSOR Select whether the built-in air temperature sensor is on or off. Available when:
A floor sensor or room sensor is installed on the auxiliary sensor input AND Auxiliary Sensor setting in the Adjust menu is set to Floor or Room (not visible when set to Floor dSP option).
•
Settings (5 of 8)
Continued on next page.

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Display Range Access Description Set to
Off, Room,
Outdoor, Floor,
Floor dSP
Installer
AUXILIARY SENSOR Select the type of auxiliary sensor. Off = no auxiliary sensor Room = Indoor Sensor 076, 077, 084 Outdoor = Outdoor Sensor 070 Floor = Slab Sensor 072, 073, 079 Floor dSP = Show floor sensor reading in upper number field. Available when: Auxiliary sensor automatically detected.
Auto,
SYn(Synchronize)
Default =
Sychronize
Installer
HEAT CYCLES PER HOUR Select either Auto cycle or Synchronize with other thermostats on the tekmarNet®system. Choose Synchronize when zone heated using a boiler. Choose Auto when zone is non-hydronic heating. Available when:
No reset control on the tekmarNet®system.•
OFF, On
Default = On Installer
HEAT 1 SUPPLY PUMP Select whether the system supply pump should turn on during a call for first stage heat, or be off to allow a zone group pump per manifold. Available when:
A reset control is present on the tekmarNet®system.•
Settings (6 of 8)
Continued on next page.

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Display Range Access Description Set to
OFF, On
Default = Off Installer
HEAT 1 SUPPLY PUMP DELAY Select whether or not the system supply pump should be delayed by 3 minutes before coming on (for thermal motor or wax actuator).
bLr (boiler bus),
M1, M2, or M3
(mix bus),
otH (non-hydronic)
Default = bLr
Installer
HEAT 2 SOURCE Select whether the second stage heat is on the boiler bus, mix 1, 2, or 3 bus, or is non-hydronic. Available when:
A reset control is present on the tekmarNet®system. There is an active room sensor.
• •
OFF, On
Default = On Installer
HEAT 2 SUPPLY PUMP Select whether the system supply pump should turn on during a call for second stage heat, or be off to allow a zone group pump per manifold. Available when:
A reset control is present on the tekmarNet®system.•
AU (automatic),
-3 to -30°F
(-1.5 to -15°C),
OFF
Default = AU
Installer
HEAT 2 DIFFERENTIAL Select automatic (Au) stage 2 operation, a manual differential from the room target to bring on stage 2, or turn stage 2 off completely (OFF). Available when:
There is an active room sensor.•
Settings (7 of 8)
Continued on next page.

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Display Range Access Description Set to
ADJUST
ADJUST
OFF, 1 to 16 Installer
AIR GROUP Select if this thermostat should be an air group member. Select off if the thermsotat is not an air group member. Select 1 though 16 to select the air group number. Available when:
The thermostat is connected to other thermostats using tekmarNet®.
•
01 to 24
(no reset control),
b:01 to b:24
(reset control - boiler),
1:01 to 1:24
(reset control - mixing)
Installer
tekmarNet®ADDRESS The address is shown in the large number field. “Auto” is shown in the upper number field when using automatic addressing. Press the or the button to manually select an address. The address can be returned to automatic “Auto” addressing when address set above 24.
FLOOR
ADJUST
ADJUST
COOL OFF or On
Default = OFF Installer
FLOOR COOLING Select if the thermostat should operate the heating relay W for radiant floor cooling. Available when:
Connected to a tekmarNet®heat pump or chiller system control.
•
None Installer
User
ESCAPE Press the or the button to return to normal operation.
Settings (8 of 8)

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Heating Operation Section A
Sequence of Operation
When using only a room temperature sensor, the thermostat operates the heating
system to maintain the Set Room Heat temperature.
When using only a floor temperature sensor, the thermostat operates the heating
system to maintain the Set Floor Heat temperature. In this case, the thermostat
does not try to control the air temperature. This is ideal for bathrooms and some
kitchen applications where the customer wants their feet to feel warm on the floor.
This is also ideal for garages so that the heating system is not affected by the
opening of the garage door in cold outdoor weather.
When using both a room temperature sensor and a floor temperature sensor, the
thermostat always maintains the Floor Minimum temperature, even when the air
temperature is satisfied. When the air temperature is below the Set Room Heat
temperature, the thermostat operates the heating system to maintain the Set Room
Heat temperature. The floor is never heated above the Floor Maximum setting in
order to protect the floor covering.
The H1 symbol indicates that the thermostat is heating with stage 1. The H2 symbol
indicates that the thermostat is heating with stage 2. The heat can cycle on and off
within +/- 1.5°F (1°C) of the Set Room Heat temperature.
Second Stage Differential
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The Heat 2 Differential setting allows for a reduction in second stage operation by
applying a temperature differential for second stage below the room target. The
Heat 2 relay is turned on once the air temperature reaches the Set Room Heat
temperature minus the Differential setting. The Heat 2 relay is shut off once the air
temperature reaches the Set Room Heat temperature minus 1.5°F (1.0°C). The
automatic differential (AU) setting operates the second stage to provide optimum
comfort level. When the Differential is set to Off, the second stage is disabled.
Second Stage Heat Source
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-------------------------------------------
The Heat 2 Source setting determines which water temperature the second stage
will draw its heat from. Select boiler temperature, mix 1, mix 2, mix 3, or other
(non-hydronic). If “other” is selected, a heat demand will not be sent from second
stage to the tekmarNet®reset control.
Freeze Protection
----------------------------------------------------
----------------------------------------------------
The thermostat operates the heat whenever the room or floor temperature falls
below 40°F (4.5°C).

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Exercising
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----------------------------------------------------------
When connected to a tekmarNet®reset control, the thermostat exercises the heat
relay for 10 seconds every 3 days. Exercising helps prevent zone valves or zone
pumps from failing due to precipitate buildup. During exercising, the thermostat
shows “TEST” on the display.
Flushing
------------------------------------------------------------
------------------------------------------------------------
The flushing feature is for open-loop systems that use a domestic hot water tank
as a heat source. Flushing ensures that fresh potable water is circulated through
the system once each day. If the thermostat is connected to a tekmarNet®reset
control with the Flushing feature turned on, the thermostat display will display the
“FLUSH” icon for the duration of the flushing operation.
Hydronic System Supply Pump
---------------------------------------
---------------------------------------
The thermostat has a Heat 1 Supply Pump and Heat 2 Supply Pump setting that
affects how the supply pump operates on the reset control. Select On to operate
the primary pump, and/or the mix system pump when there is a call for heat from
the thermostat.
In special applications with multiple zoning manifolds, the Heat 1 Supply Pump
setting can be set to Off. This allows a Zone Group Pump located on the Zone
Manager, or Wiring Center to operate the pump for the manifold.
A separate Heat 1 Supply Pump Delay setting exists if the thermostat operates a
thermal motor (wax actuator) zone valve. Select On to provide a three minute delay
to allow the zone valve to open before the primary or mix system pump is turned
on. Select Off when operating zone pumps or motorized zone valves.
DHW Tank Priority
---------------------------------------------------
---------------------------------------------------
When a tekmarNet®reset control is heating an indirect Domestic Hot Water (DHW)
tank, the thermostat may shut off the heating zones to allow the DHW tank to recover
quickly. This is determined by the DHW priority of the tekmarNet®reset control.
Warm Weather Shut Down
--------------------------------------------
--------------------------------------------
When the outdoor air temperature exceeds the Warm Weather Shut Down (WWSD)
setting on the tekmarNet®reset control, the heating system is shut off.

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Air Group Operation Section B
In order to prevent heating and cooling at the same time, this thermostat can operate
together with other thermostats on a tekmarNet®system to form an air group.
In an air group, one thermostat is assigned as the air group master. The air group
master operates the cooling equipment for the group. This thermostat can be set
to be a member of the air group.
When operating as an air group, the air temperature readings of all the air group
member thermostats are communicated to the air group master and a temperature
average is determined.
When the air group master is in cooling
operation, the air group member thermostats
do not operate the heating system for air
heating.
If the Set Room Heat temperature is adjusted
while the air group is cooling, the snowflake
icon is flashed to alert the user that the cooling
is presently on. Once the cooling shuts off,
the heating can start operation.
Air Group
Master MemberMember
tekmarNet Communication
Floor Cooling Section C
The thermostat has the option to support radiant floor cooling when connected to a
heat pump control using tekmarNet®communication. The floor cooling setting must
be set to On and the heating system must be in Warm Weather Shut Down (WWSD).
When the heat pump system control operates in cooling mode, all thermostats set for
floor cooling on the tekmarNet®bus all activate the first stage heating contact (H1)
at the same time to allow chilled water into the system. The thermostat continues
to operate the cooling until either the room temperature reaches the Set Heat
temperature plus 3°F (Set Heat+1.5°C) or reaches a minimum temperature of 74°F.
If only a floor sensor is installed, the floor cooling setpoint is 67°F (19.5°C).

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Schedules Section D
Lowering the room temperature setting reduces the amount of fuel required to heat
the building resulting in energy savings.
This thermostat can follow a programmable schedule in order to automatically lower
the room temperature setting. A schedule master such as a Timer 033 is required
in order to gain programmable schedule functionality.
When operating on a programmable schedule, a symbol is shown, as well as a
or a . The or indicates the current operating temperature.
If a symbol does not appear, there is no schedule available.
Display Action
Occupied temperature. No schedule.
Unoccupied temperature. No schedule.
Programmable schedule at occupied temperature.
Programmable schedule at unoccupied temperature.
Scene Display Room Temperature Setting
1or or
Follows programmable schedule or
operates at the occupied temperature.
2Away Away temperature.
3Unoccupied temperature.
Scenes (System Override) Section E
When a programmable schedule is selected, there is a time delay for the temperature
to change from the temperature to the temperature.
The thermostat uses Optimum Start to predict the heat up and cool off rate of
the room. The optimum start feature allows the room to reach the set room
temperature by the time set in the programmable schedule. This applies for both
heating and cooling.
Scenes provide an easy way to save energy while away on vacation, or override a
pre-set schedule when plans change. tekmarNet®devices such as a User Switch
479 provide scene adjustment.
This thermostat responds to the following scenes:
While in the Away scene, the room temperature cannot be changed using the or
buttons. Change the scene from Away to or to change the temperature.