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TH209 400-209-000-A 2008-06-19 1/2
This thermostat can be used to control an electric heating system
such as a baseboard heater, a radiant floor,a radiant ceiling, or a con-
vector.
The thermostat CANNOT be used with:
• a resistive load under 0.83 A
• a resistive load over 8.3 A
• a system driven by a contactor or a relay (inductive load)
• a fan-forced heating system (e.g. : fan-forced convector)
• a central heating system
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 faceplate to the base. The screw can-
not be completely removed and remains captive on the base.
Remove the faceplate from the base by pulling the bottom half.
Connect any one of thermostat wires to the heater (load) wire and the
other one to the power supply wire using solderless connectors for
copper wires. (The thermostat wires are non-polarized; either wire
can be connected to the load or to the power supply.)
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.
Install the base onto an electrical
box.
Reinstall the faceplate on the base
and secure it in place with the screw.
NOTE: Keep the air vents of thermo-
stat clean and unobstructed at all
times.
n
Description
1.
o
Installation
2.
Temperature display
Temperature
adjustment
buttons
Up button
Down button
}
Heating intensity
indicator. No image
appears when
heating is off.
2-wire installation
4-wire installation
TH209
User Guide
Electronic Thermostat
400-209-000-A (TH209) ENG.fm Page 1 Thursday, June 19, 2008 8:43 AM