It is your responsibility to ensure that this thermostat is safely installed according
to all applicable codes and standards. tekmar is not responsible for damages
resulting from improper installation and/or maintenance.
This is a safety-alert symbol. The safety alert symbol is shown alone
or used with a signal word (DANGER, WARNING, or CAUTION),
a pictorial and/or a safety message to identify hazards.
When you see this symbol alone or with a signal word on your
equipment or in this Manual, be alert to the potential for death or
serious personal injury.
This pictorial alerts you to electricity, electrocution, and shock
hazards.
This symbol identifies hazards which, if not avoided, could result
in death or serious injury.
This symbol identifies hazards which, if not avoided, could result
in minor or moderate injury.
This symbol identifies practices, actions, or failure to act which
could result in property damage or damage to the equipment.
Read Manual and all product labels BEFORE using the
equipment. Do not use unless you know the safe and
proper operation of this equipment. Keep this Manual
available for easy access by all users. Replacement
Manuals are available at tekmarControls.com
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It is the installers responsibility to ensure that this thermostat is safely installed
according to all applicable codes and standards.
•
Improper installation and operation of this thermostat could result in damage to the
equipment and possibly even personal injury or death.
This thermostat is not intended for use as a primary limit control. Other controls that
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are intended and certified as safety limits must be placed into the control circuit.
Do not attempt to service the thermostat. There are no user serviceable parts inside
the thermostat. Attempting to do so voids warranty.
To prevent the risk of personal injury and/or death, make sure power
is not applied to the thermostat until it is fully installed and ready for
final testing. All work must be done with power turned off to the circuit
being worked on.
Please be aware local codes may require this thermostat to be installed
or connected by an electrician.
The thermostat operates a single heating system zone and can be wired in four
different ways.
tekmarNet®2 - Allows the thermostat to be wired point-to-point using 2 wires to a
tekmarNet®2 Wiring Center, House Control, or Zone Manager. This allows easy
wiring for retrofit applications.
tekmarNet®4 - Allows the thermostat to be wired using 4 wires to a tekmarNet Wiring
Center or Zone Manager point-to-point. Alternatively, the thermostat can operate
heating equipment locally and the tN4 communication bus can be daisy-chained
from one thermostat to another.
Stand Alone
Stand Alone - Simple 3 wire connection to a switching relay or zone valve control.
- Simple 3 wire connection to a 24 V (ac) transformer and zone valve.
Wiring - tekmarNet®2
tN2 Wiring Center
tN2 House Control
tN2 Zone Manager
Only qualified personnel should perform testing procedures. A licensed electrician
is recommended.
Testing the Thermostat Wiring
Testing tekmarNet®2 Wiring
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Testing the Power
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 thermostat front.
2. Use an electrical meter to measure DC voltage between the tN2 terminals.
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If the DC voltage is 0 V (dc) for at least 20 seconds, then there is an open or short
circuit in the tN2 wires.
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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.
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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 Wiring
1. Touch 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 “Heat On” 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.
2. Use an electrical test meter to measure (ac) voltage between the R and C terminals.
The reading should be 24 V (ac) +/– 10%.
3. Install the front cover.
Testing the Heat Relay
1. Remove the front cover from the thermostat.
2. Touch the button and set the heating temperature below the current room
temperature. There should be no “Heat On” symbol on the display.
3. Set the electrical test meter to continuity.
4. Place electrical meter probes between R and W. There should be no continuity. If
there is continuity then there may be a wiring fault or the relay may be faulty.
5. Touch the button and set the heating temperature above the current room
temperature. Make sure the display does not show “WWSD”. The “Heat On” symbol
should appear on the display.
6. There should now be continuity between the R and W terminals.
®
Testing the tekmarNet
4 Bus Wiring
The symbol is shown on the display when communication is present. If the
thermostat is connected in a network and the communication is missing, there may
be an open or short circuit on the tN4 and C bus wires.
1. Remove the front cover from the thermostat.
2. To test for short circuits:
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Disconnect the tN4 bus wires on one end.
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Install wire nuts on each wire to ensure the wire ends are not touching.
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Disconnect the tN4 bus wires on the other end.
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Measure for continuity using an electrical meter.
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If continuity is present, there is a short circuit fault along the wires. It is recommended
to replace the tN4 bus wires.
3. To test for open circuits:
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Disconnect the tN4 bus wires on one end and connect them together.
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Disconnect the tN4 bus wires on the other end.
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Use an electrical meter to measure for continuity.
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If there is no continuity, there is an open circuit fault along the wires. It is recommended
to replace the tN4 bus wires.
Push the thermostat front onto
the thermostat base. Installation
is now complete.
Push
Cleaning the Thermostat
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.
Relay: 24 V (ac) 2 A
Designed and assembled in Canada
Designed and
Meets Class B: ICES & FCC Part 15
assembled in Canada
Mmm YYYY
/
Lot # 12345
Meets Class B:Canadian ICESFCC Part 15
Action
LOCK ACCESS LEVEL
Thermostat is locally locked and the access level cannot be changed.
Set to Lock when installation has been completed.
UNLOCK ACCESS LEVEL
Thermostat is unlocked and the access level may be changed. Go to
the Toolbox menu to change the access level. Set to Unlock during
the installation process.
Note: tekmarNet® system controls include a Global Lock that locks all
connected thermostats. Set the tekmarNet® system control to unlock
to allow access level adjustment on all connected thermostats.