3-EN
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ENGLISH
Wiring
1. Connect the system wires to the terminal strips on the thermostat base per the wiring diagram for
the system application. See Figures 3–6. Form the thermostat wiring so that the cable lies flat
between the terminal strip and the center of the base. See Figure 2, A.
2. Push all excess wiring into the hole in the wall. Plug the hole with the supplied insulating foam to
ensure accurate temperature reading.
3. Visually inspect the temperature sensor. Be sure that it is standing up and that it has not been
damaged during installation. See Figure 2, B.
4. Align the tabs of the thermostat face with the slots of the thermostat base. Gently push the
thermostat face into the thermostat base locking it into place. See Figure 2, B.
CAUTION
HAZARD OF IMPROPER OR UNINTENDED OPERATION
• Turn off the control transformer power before installing the thermostat.
• Using a properly rated voltage sensing device, confirm that the power is off.
• Do not short a gas valve, fan heat relay or cool relay even momentarily.
• Do not attempt to connect to live circuits. An accidental connection to a component on the
thermostat circuit board could damage the thermostat.
Failure to follow these instructions can result in equipment damage.
Figure 2:
Assembling the Thermostat
WALL
BASE
TAB
SLOT
TEMPERATURE
SENSOR
A
B