User Guide
TH106  400-106-001-D  12/8/05   1/3
This programmable thermostat can be used to control an electric
heating system such as an electric baseboard heater, a radiant ceil-
ing, a radiant floor, a convector, etc.
The thermostat cannot be used under the following conditions:
• The resistive load is greater than 16.7 A
• The resistive load is less than 2 A
• The system is driven by a contactor or relay (inductive load)
• The system is a central heating system
SUPPLIED PARTS:
• One (1) thermostat
• Two (2) 6-32 screws
• Two (2) solderless connectors
TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN
POWER PANEL TO AVOID ELECTRICAL SHOCK.
THE INSTALLATION MUST BE PERFORMED BY AN ELECTRI-
CIAN.
 All cables and connections must conform to the local electrical
code. 
 Special CO/ALR solderless connectors must be used when con-
necting with aluminum conductors.
 Install the thermostat onto an electrical box.
 Install the thermostat about 5 feet high, on an inside wall facing
the heater.
 Avoid locations where there are air drafts (such as the top of a
staircase or an air outlet), dead air spots (such as behind a
door), or direct sunlight. 
 Do not install the thermostat on a wall that conceals chimney or
stove pipes.
 The thermostat wires are not polarized; either wire can be con-
nected to the load or to the power supply.
NOTE: Always keep the thermostat's vents clean and unobstructed.
n
o Connect the thermostat wires to the line wires and to the load 
wires using solderless connectors for copper wires.
p Push any excess wire back into the electrical box. 
NOTE: If necessary, before re-installing the front component, config-
ure the thermostat (see section 3).
q Return power to heating system.
n
Description
1.
o
Installation
2.
Select the 
operating mode
Set the time
Time and day
Temperature
Operating 
mode icons
Skip a period
Program the 
schedule
Temperature 
preset icons
Temperature 
adjustment 
buttons
Temperature 
preset buttons
Heating power 
indicator
Periods
Appears when the 
setpoint is displayed
Set the day
2-wire installation
4-wire installation
TH106
User Guide
Programmable Thermostat



