Page 1
D529
tekmarNet®2 Thermostat 529
Installation & Operation Manual
Introduction
The tekmarNet®2 Thermostat 529
provides operation for:
Two Stage Heat•
12/11
Zoning
Replaces: 12/10
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
•
Note
tN2 Zone Manager, Expansion
•
Module, Wiring Center or House
Control required for operation
1 of 28 © 2011
D 529 - 12/11
Page 2
------------------------------------------------------
--------------------------------------------------
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
Getting Started
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.
Installation
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.
Preparation
Tools R e q u i r e d
tekmar or jeweller screwdriver
•
Phillips head screwdriver
•
Materials Required
2, #6 x 1” Wood Screws
•
18 AWG LVT Solid Wire
•
(Low Voltage Connections)
------------------------------------------------------
Wire Stripper•
--------------------------------------------------
Optional Adapter Plate 007 (for
•
installation on 2” x 4” gang box)
2 of 28© 2011 D 529 - 12/11
Page 3
Installation Location
-------------------------------------------------
-------------------------------------------------
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.
•
Removing The Thermostat Base
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.
1
Push
tab
Remove thermostat
2
from base
Mounting The Thermostat Base
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.
Stud
Switch
Box
1
/4”
Thermostat
Base
007 Adaptor
Plate
3
(83 mm)
Mounted on switch box
3 of 28 © 2011 D 529 - 12/11
Page 4
If a switch box was not used, mount the
2
3
/8”
(60 mm)
screwhole
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
Base
Stud
thermostat to the wall. At least one of the
screws should enter a wall stud or similar
rigid material.
3
2
/8”
(60 mm)
screwhole
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.
Heating Equipment
R W
See 2nd stage heat wiring
options on opposite page
2nd Stage
Heating
6
W2
5
Rh
For instructions see brochure
Use at least 65°C conductors
No Power
tN21tN2
Sensor
2
34
tN2
tN2
Zone
4 of 28© 2011 D 529 - 12/11
529
ON
Switch Settings:
1023-03
Scene
Lock
Setback
Unlock
Off
Off
1234
12 34
Not used
Not used
Mmm YYYY
Meets Class B:
Canadian ICES
tNt 529
Two Stage Heat
Relays: 24V (ac) 2A
Slab Sensor 079, or
Outdoor Sensor 070, or
Indoor Sensor 076, 077, 084
Lot # 12345
FCC Part 15
Page 5
Wiring 2nd Stage Heat
-----------------------------------------------
-----------------------------------------------
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.
Wiring Center or
Zone Manager
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Zone 1 Zone 2 Zone 3 Zone 4
Two-Stage Terminal
Designation
Zone 1 Zone 3
Stage 1 Stage 2 Stage 1 Stage 2
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.
tNt 529
Two Stage Heat
Relays: 24V (ac) 2A
529
1023-03
ON
Mmm YYYY
Lot # 12345
Lock
Not used
Scene
Setback
Not used
Unlock
Off
Off
Meets Class B:
Canadian ICES
FCC Part 15
Switch Settings:
1234
1234
R W
6
5
For instructions see brochure
Use at least 65°C conductors
tN21tN2
2
W2
Rh
No Power
Sensor
34
House Control
Wiring Center or
Zone Manager
tN2 tN2 tN2 tN2 tN2 tN2 tN2 tN2
Zone 1 Zone 2 Zone 3 Zone 4
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Page 6
Testing the Thermostat Wiring
---------------------------------------------------
----------------------------------------
Testi ng the P ower
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
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.
---------------------------------------------------
----------------------------------------
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.
Pivot
Tab
6 of 28© 2011 D 529 - 12/11
Page 7
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
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.
Switch Settings
529
Switches are set to “On”
position from the factory, and
do not require changing for
most applications.
6
W2
5
Rh
For instructions see brochure
Use at least 65°C conductors
No Power
tN21tN2
Sensor
2
34
tNt 529
Two Stage Heat
Relays: 24V (ac) 2A
ON
Setback
Off
Switch Settings:
1234
12 34
Scene
Off
1023-03
Lock
Unlock
Not used
Not used
Mmm YYYY
Lot # 12345
Meets Class B:
Canadian ICES
FCC Part 15
Switch
1
2
3
4
Position
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Action
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
The thermostat does not follow a programmable setback
schedule.
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
The thermostat does not respond to scenes.
LOCK ACCESS LEVEL
Locked to ‘User’ access level. Set to Lock when installation
completed.
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).
Not used
Not used
7 of 28 © 2011 D 529 - 12/11
Page 8
User Interface
Display
SECONDARY DISPLAYMAIN DISPLAY
Button Operation
Press the or the button to select the room temperature.
Symbols Description
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.
8 of 28© 2011 D 529 - 12/11
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.
®
Page 9
®
and buttons for 2 seconds to go to the next step, OR
system control to Unlock to change Access level to Installer.
SET ROOM HEAT
Set the room heating temperature while in the
event.
Installer
User
SET ROOM HEAT
Set the room heating temperature while in the
event.
Installer
User
SET ROOM HEAT AWAY
Set the room heating temperature while in the Away
Installer
scene.
(21.0°C)
Default = 70°F
(4.5 to 35.0°C)
40 to 95°F
Press
• 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.
+
Together
• Press and hold down both the
• After 10 seconds of no button activity, the display goes back to normal operation.
• Note: Set switch setting #3 and tekmarNet
40 to 95°F
Display Range Access Description Set to
Settings (1 of 8)
9 of 28 © 2011 D 529 - 12/11
(18.5°C)
Default = 65°F
(4.5 to 35.0°C)
40 to 95°F
(4.5 to 35.0°C)
(16.5°C)
Default = 62°F
Continued on next page.
Page 10
SET FLOOR HEAT
Set the floor heating temperature while in the
event.
Available when:
Installer
A slab sensor is installed on the auxiliary sensor
input AND Sensor setting in the Adjust menu is set
•
User
to Floor AND Room Sensor setting in the Adjust
menu is set to Off.
SET FLOOR HEAT
Set the floor heating temperature while in the
A slab sensor is installed on the auxiliary sensor
event.
input AND Sensor setting in the Adjust menu is set
Available when:
•
Installer
User
to Floor AND Room Sensor setting in the Adjust
menu is set to Off.
BACKLIGHT
Select the backlight operation.
Off = Permanently Off
Installer
30 = Temporary on for 30 seconds
User
On = Permanently On
On + = On during and off during
40 to 122°F
(4.5 to 50.0°C)
(22.0°C)
Default = 72°F
40 to 122°F
(18.5°C)
Default = 65°F
(4.5 to 50.0°C)
On +
Off, 30 sec, On,
Default = 30 sec
Display Range Access Description Set to
Settings (2 of 8)
10 of 28© 2011 D 529 - 12/11
Continued on next page.
Page 11
TEMPERATURE UNITS
Press the or the button to change from °F to
°C and vice versa.
Installer
User
DEVICE TYPE
Display alternates between the Device Type (large
Installer
number) with Software Version (upper right corner)
and the thermostat address.
User
MAXIMUM SET ROOM HEAT
Set the maximum room heating limit while in the
Installer
event.
MAXIMUM SET ROOM HEAT
Set the maximum room heating limit while in the
Installer
event.
MINIMUM SET ROOM HEAT
Set the minimum room heating limit.
Installer
°F or °C
Default = °F
Device Type with
Address
Software Version,
40 to 95°F
(4.5 to 35.0°C)
(29.5°C)
40 to 95°F
Default = 85°F
(29.5°C)
Default = 85°F
(4.5 to 35.0°C)
40 to 95°F
(7.0°C)
Default = 45°F
(4.5 to 35.0°C)
Display Range Access Description Set to
Settings (3 of 8)
11 of 28 © 2011 D 529 - 12/11
Continued on next page.
Page 12
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.
Room Sensor setting in the Adjust menu is set to
On AND
A slab sensor is installed on the auxiliary sensor
Available when:
•
input AND
•
Sensor setting in the Adjust menu is set to Floor.
•
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, 4.5 to
Off, 40 to 122°F
User
Installer
50.0°C)
Default = 72°F
(22.0°C)
Installer
(Off, 4.5 to
Off, 40 to 122°F
User
50.0°C)
Default = Off
Display Range Access Description Set to
Settings (4 of 8)
12 of 28© 2011 D 529 - 12/11
Continued on next page.
Page 13
Room Sensor setting in the Adjust menu is set to
FLOOR MAXIMUM
Set the floor maximum temperature in order to protect
the floor covering.
On AND
Available when:
•
A slab sensor is installed on the auxiliary sensor
input AND
Sensor setting in the Adjust menu is set to Floor.
•
•
SCHEDULE
Switch setting 1 is set to Setback (On Position).•
Thermostat can follow schedule master 1, 2, 3, or 4.
Available when:
ROOM SENSOR
Select whether the built-in air temperature sensor is
on or off.
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
Available when:
•
when set to Floor dSP option).
Installer
Installer
Installer
Off)
(29.5°C)
Default = 85°F
(4.5 to 50.0°C,
40 to 122°F, Off
1, 2, 3, 4
Default = 1
On or Off
Default = On
Display Range Access Description Set to
Settings (5 of 8)
13 of 28 © 2011 D 529 - 12/11
Continued on next page.
Page 14
system.
®
system.•
®
system.•
®
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
Installer
Floor dSP = Show floor sensor reading in upper
number field.
Available when:
Auxiliary sensor automatically detected.
HEAT CYCLES PER HOUR
Select either Auto cycle or Synchronize with other
thermostats on the tekmarNet
Choose Synchronize when zone heated using a boiler.
Choose Auto when zone is non-hydronic heating.
Installer
No reset control on the tekmarNet
Available when:
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:
Installer
A reset control is present on the tekmarNet
Auto,
SYn(Synchronize)
Default =
Sychronize
Floor dSP
Off, Room,
Outdoor, Floor,
OFF, On
Default = On
Display Range Access Description Set to
Settings (6 of 8)
Continued on next page.
14 o f 2 8© 2011 D 529 - 12/11
Page 15
system.
®
A reset control is present on the tekmarNet
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).
HEAT 2 SOURCE
Select whether the second stage heat is on the boiler
bus, mix 1, 2, or 3 bus, or is non-hydronic.
There is an active room sensor.
Available when:
•
•
HEAT 2 SUPPLY PUMP
Select whether the system supply p ump sh ould t urn on
during a call for second stage heat, or be off to allow a
system.•
®
A reset control is present on the tekmarNet
zone group pump per manifold.
Available when:
HEAT 2 DIFFERENTIAL
Select automatic (Au) stage 2 operation, a manual
differential from the room target to bring on stage 2, or
There is an active room sensor.•
turn stage 2 off completely (OFF).
Available when:
Installer
Installer
Installer
Installer
OFF
OFF, On
Default = Off
(mix bus),
M1, M2, or M3
bLr (boiler bus),
Default = bLr
otH (non-hydronic)
OFF, On
Default = On
-3 to -30°F
(-1.5 to -15°C),
AU (automatic),
Default = AU
Display Range Access Description Set to
Settings (7 of 8)
15 of 28 © 2011 D 529 - 12/11
Continued on next page.
Page 16
ADJUST
AIR GROUP
ADJUST
heat pump or chiller
®
.
®
ADDRESS
®
The thermostat is connected to other thermostats
Select if this thermostat should be an air group member.
using tekmarNet
Select off if the thermsotat is not an air group member.
Select 1 though 16 to select the air group number.
Available when:
•
tekmarNet
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 COOLING
Select if the thermostat should operate the heating relay
Connected to a tekmarNet
W for radiant floor cooling.
system control.
Available when:
•
ESCAPE
Press the or the button to return to normal
operation.
OFF, 1 to 16 Installer
Installer
01 to 24
b:01 to b:24
1:01 to 1:24
(no reset control),
(reset control - boiler),
(reset control - mixing)
Installer
OFF or On
COOL
FLOOR
Default = OFF
Installer
User
None
Display Range Access Description Set to
Settings (8 of 8)
ADJUST
16 of 28© 2011 D 529 - 12/11
ADJUST
Page 17
Sequence of Operation
--------------------------------------------
-------------------------------------------
----------------------------------------------------
Heating 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
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.
--------------------------------------------
Section A
Second Stage Heat Source
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).
----------------------------------------------------
-------------------------------------------
17 of 28 © 2011 D 529 - 12/11
Page 18
Exercising
----------------------------------------------------------
------------------------------------------------------------
---------------------------------------
---------------------------------------------------
--------------------------------------------
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.
--------------------------------------------
18 of 28© 2011 D 529 - 12/11
Page 19
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.
Air Group
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.
Master
tekmarNet Communication
MemberMember
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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Page 20
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
Programmable schedule at
occupied
unoccupied
temperature.
temperature.
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 (System Override)
Section E
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:
Scene Display Room Temperature Setting
1
2
or or
Away
Follows programmable schedule or
operates at the occupied temperature.
Away temperature.
3
Unoccupied temperature.
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.
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®
system control.
4 bus, press the and buttons
®
address.
®
Troubleshooting
4 communication bus has either an open or a short circuit. The result is that there
®
CONTROL ERROR
The thermostat was unable to correctly read settings from memory and has reloaded the factory
default settings. The thermostat does not operate the heating in this zone while this error message
is present.
Error clears once all adjust menu settings in the Installer access level (unlocked) have been
checked. Set thermostat’s switch setting #3 to unlock and unlock the tekmarNet
Then press and hold and buttons together for 2 seconds to enter the adjust menu. Continue
until all settings have been reviewed.
BUS ERROR
The tekmarNet
are no communications. Check for loose wires. Check for short circuits between the tN4 and C
wires on the House Control, Wiring Center, or Zone Manager. Check for correct polarity between
the C and R wires.
Error clears automatically once wiring fault has been corrected.
If the thermostat is intentionally removed from the tekmarNet
together to clear the error message.
ADDRESS ERROR
This thermostat and another device have been manually given the same tekmarNet
Error clears automatically once this thermostat is given a new manually set address or if the
thermostat is set to automatic addressing.
Error Message Description
Error Messages (1 of 4)
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®
®
bus has exceeded 24. Devices include tekmarNet
bus is at 24 or lower.
®
buses.
®
DEVICE LIMIT
The number of devices on the tekmarNet
Thermostats and Setpoint Controls. The device count must be lowered to 24 or less. If possible,
move devices to other tekmarNet
Error clears automatically once the number of devices on the tekmarNet
ROOM SENSOR SHORT CIRCUIT
The built-in air temperature sensor has a short circuit fault. Do not confuse this error with the auxiliary
room sensor short circuit error.
This error cannot be field repaired.
Contact your wholesaler or tekmar sales representative for details on repair procedures.
ROOM SENSOR OPEN CIRCUIT
The built-in air temperature sensor has an open circuit fault. Do not confuse this error with the
auxiliary room sensor short circuit error.
This error cannot be field repaired.
Contact your wholesaler or tekmar sales representative for details on repair procedures.
AUXILIARY ROOM SENSOR SHORT CIRCUIT
The auxiliary room sensor has a short circuit. Check for damaged wires. Locate and repair the
problem as described in the Data Brochure D 076, D077, or D084.
Error clears after the auxiliary room sensor fault is corrected.
Error Message Description
Error Messages (2 of 4)
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AUXILIARY ROOM SENSOR OPEN CIRCUIT
The auxiliary room sensor has an open circuit. Check for loose or damaged wires. Locate and repair
the problem as described in the Data Brochure D 076, D077, or D084.
Error clears once the auxiliary room sensor fault is corrected.
If the auxiliary room sensor was intentionally removed, power the thermostat down and up to clear
the error.
FLOOR SENSOR SHORT CIRCUIT
The auxiliary floor sensor has a short circuit. Check for damaged wires. Locate and repair the
problem as described in the Data Brochure D072 or D 079.
Error clears once the floor sensor fault is corrected.
FLOOR SENSOR OPEN CIRCUIT
The auxiliary floor sensor has an open circuit. Check for loose or damaged wires. Locate and repair
the problem as described in the Data Brochure D072 or D 079.
Error clears once the floor sensor fault is corrected.
If the floor sensor was intentionally removed, locate the Room Sensor setting in the Adjust menu
and set to On. Power the thermostat down and up to clear the error.
OUTDOOR SENSOR SHORT CIRCUIT
The auxiliary outdoor sensor has a short circuit. Check for damaged wires. Locate and repair the
problem as described in the Data Brochure D 070.
Error clears after the outdoor sensor fault is corrected.
Error Message Description
Error Messages (3 of 4)
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Page 24
OUTDOOR SENSOR OPEN CIRCUIT
The auxiliary outdoor sensor has an open circuit. Check for loose or damaged wires. Locate and
repair the problem as described in the Data Brochure D 070.
Error clears once the outdoor sensor fault is corrected.
If the outdoor sensor was intentionally removed, power the thermostat down and up to clear the
error.
AIR GROUP MEMBER ERROR
The thermostat has been selected to join an air group as a member, yet there is no air group master
thermostat.
Error clears once the thermostat detects an air group master or the air group is set to OFF.
Error Message Description
Error Messages (4 of 4)
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Frequently Asked Questions
Symptom Look for... Corrective Action
No Heat
Heat on before
scheduled time
Pressing
button does
not increase
temperature
Pressing
button does
not decrease
temperature
H1 Symbol
Flashing
WWSD
H1 symbol indicates heat is on. Check if
zone valve or zone pump is operating.
Increase WWSD setting on tekmarNet®
reset control.
Flashing Away Change User Switch to Normal scene 1.
Optimum start “learns” the heat up and
cool off rate of the room and starts the
heating or cooling early so that the room is
comfortable at the scheduled time.
Flashing Max
Installer can increase the Maximum Set
Room Heat.
Floor temperature has reached the Floor
Flashing Floor
Max
Maximum setting. If the floor is not heated,
then the floor sensor may be faulty and
require replacement.
Flashing Min
Installer can decrease the Minimum Set
Room Heat.
Floor minimum takes priority over the air
Floor Min
heating temperature. Recommend turning
down the floor minimum temperature
setting.
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Job Record
Jobsite Location ________________________________________________
Thermostat Location _____________________________________________
Item Setting Item Setting
Set Room Heat
Schedule Member
Set Room Heat Room Sensor
Set Room Heat Away Sensor
Set Floor Heat
Heat Cycles Per Hour
Set Floor Heat Heat 1 Supply Pump
Backlight Heat 1 Pump Delay
Units Heat 2 Source
Max Set Room Heat
Heat 2 Supply Pump
Max Set Room Heat Heat 2 Differential
Min Set Room Heat Air Group
Set Floor Min
tekmarNet® Address
Set Floor Min Floor Cooling
Set Floor Max
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Page 27
Technical Data
tekmarNet®2 Thermostat 529; Two Stage Heat
Packaged weight 0.8 lb. (380 g)
Enclosure White PVC plastic, NEMA Type 1
Dimensions 2-7/8” H x 2-7/8” W x 13/16” D (73 x 73 x 21 mm)
Approvals CSA C US, meets Class B: ICES and FCC Part 15
Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C).
RH max 80% up to 88°F (31°C) decreasing linearly to 50%
RH at 104°F (40°C)
Altitude 0 - 6560 feet (2000 m), Installation Category II,
Pollution Category 2
Power supply Provided by tekmarNet®2 Control, 1.3 VA
Rh - W2 Relay 24 V (ac) 2 A
Sensors: NTC thermistor, 10 kΩ @ 77°F (25°C ± 0.2°C) ß = 3892
– Optional tekmar type # 070, 072, 073, 076, 077, 079, 084
27 of 28 © 2011 D 529 - 12/11
Page 28
Limited Warranty and Product Return Procedure
Limited Warranty The liability of tekmar under this warranty is limited. The Purchaser, by taking receipt
of any tekmar product (“Product”), acknowledges the terms of the Limited Warranty in effect at the time
of such Product sale and acknowledges that it has read and understands same.
The tekmar Limited Warranty to the Purchaser on the Products sold hereunder is a manufacturer’s passthrough warranty which the Purchaser is authorized to pass through to its customers. Under the Limited
Warranty, each tekmar Product is warranted against defects in workmanship and materials if the Product
is installed and used in compliance with tekmar’s instructions, ordinary wear and tear excepted. The passthrough warranty period is for a period of twenty-four (24) months from the production date if the Product is
not installed during that period, or twelve (12) months from the documented date of installation if installed
within twenty-four (24) months from the production date.
The liability of tekmar under the Limited Warranty shall be limited to, at tek mar’s sole discretion: the cost of parts
and labor provided by tekmar to repair defects in materials and / or workmanship of the defective product; or to
the exchange of the defective produc t for a warranty replacement product; or to the granting of credit limited to
the original cost of the defective product, and such repair, exchange or credit shall be the sole remedy available
from tekmar, and, without limiting the foregoing in any way, tekmar is not resp onsible, in contract, tort or strict
product liability, for any other losses, costs, expenses, inconveniences, or damages, whether direct, indirect,
special, secondary, incidental or consequential, arising from ownership or use of the product, or from defects in
workmanship or materials, including any liabilit y for fundamental breach of contract.
The pass-through Limited Warranty applies only to those defec tive Products returned to tekmar during the warranty period. This Limited Warranty does not cover the cost of the parts or labor to remove or transport the defective Product, or to reinstall the repaired or replacement Product, all such costs and expenses being subject to
Purchaser’s agreement and warranty with its customers.
Any representations or warranties about the Products made by Purchaser to its customers which are dif ferent
from or in excess of the tekmar Limited Warranty are the Purchaser’s sole responsibility and obligation. Purchaser
shall indemnif y and hold tekmar harmless from and against any and all claims, liabilities and damages of any
kind or nature which arise out of or are related to any such representations or warranties by Purchaser to its
customers.
The pass-through Limited Warranty does not apply if the returned Product has been damaged by negligence by
persons other than tekmar, accident, fire, Act of God, abuse or misuse; or has been damaged by modifications,
alterations or at tachments made subsequent to purchase which have not been authorized by tekmar; or if the
Product was not installed in compliance with tekmar’s instructions and / or the local codes and ordinances; or if
due to defective installation of the Pro duct; or if the Product was not used in compliance with tekmar’s instructions.
THIS WARRANT Y IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IM PLIED, WHICH THE GOVERNIN G
LAW ALLOWS PARTIES TO CONTRACTUALLY EXCLUDE, INCLUDING , WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DURABILITY OR DESCRIPTION OF THE PRODUCT, ITS NON-INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS, AND
ITS COM PLIANCE WI TH OR NON -VI OLATIO N OF A NY APPLI CABL E ENVIRON ME NTAL, HE ALTH OR SAFE TY
LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY-FOUR (24) MONTHS FROM THE PRODUCTION
DATE, TO THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING LAW.
Product Warranty Return Procedure All Products that are believed to have defects in workmanship or materials must be returned, together with a written description of the defect, to the tek mar Representative assigned to
the territory in which such Product is located. If tek mar receives an inquiry from someone other than a tekmar
Representative, including an inquiry from Purchaser (if not a tekmar Representative) or Purchaser’s customers,
regarding a potential warranty claim, tekmar’s sole obligation shall be to provide the address and other contact
information regarding the appropriate Representative.
tekmar Contro l Systems Ltd., Canada
tekmar Contro l Systems , Inc., U.S.A .
Head O ffic e: 5100 Silve r Star Ro ad
Vernon, B.C. Canada V1B 3K4
(250) 54 5-7749 Fax. (2 50) 545 -0 650
Web Site: w ww.tekmarcont rols.c om
All specifications are subject
to change without notice
Product design, software and literature
are Copyright © 2011 by:
tekmar Control Systems Ltd. and tekmar
Control Systems, Inc.
28 of 28 D 529 - 12/11.
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