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TH108 400-108-002-C 5/16/06 1/2
This thermostat can be used to control an electric heating system
such as a baseboard heater, a radiant ceiling, a radiant floor, a con-
vector, etc.
The thermostat cannot be used with the following:
• a resistive load under 2 A
• a resistive load over 12.5 A
• systems driven by a contactor or a relay (inductive load)
• fan-equipped heating systems
• central heating systems
SUPPLIED PARTS
• One (1) thermostat
• Two (2) 6-32 mounting screws
• Two (2) solderless connectors
TURN OFF POWER OF THE HEATING SYSTEM AT THE MAIN
POWER PANEL TO AVOID ELECTRIC SHOCK.
Loosen the screw holding the control module to the base. The screw
cannot be completely removed. Lift the control module to remove it
from the base.
Make the appropriate connections. Please note that the thermostat
wires are non-polarized; either wire can be connected to either termi-
nal.
NOTE: All cables and connections must conform to the local electri-
cal code. Special CO/ALR solderless connectors must be used when
connecting with aluminium conductors.
Align and affix the base to the
electrical box.
Set the switch at the back of the remov-
able part of the thermostat to °C or °F.
Replace the front part of the thermostat
on the base and secure it in place with
the screw.
NOTE: Keep the air vents of thermostat
clean and unobstructed at all times.
n
Description
1.
o
Installation
2.
Temperature
display
Percentage of
heating time *
Temperature
adjustment
buttons
* The thermostat displays the percentage of heating time required to
maintain the desired temperature. For example, is displayed when
heating is activated 40 percent of the time.
2-wire installation
4-wire installation
TH108
User Guide
Electronic Thermostat