Installation | |
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Selector Switches
The heating system selector and the F°/C° selector switches are located on the Printed Circuit Board.
■Heating system selector
The heating system selector is a switch on the Printed Circuit Board on the inside of the thermostat. The switch is at “HG” position. Leave it in this position if you have a gas furnace or an oil burner.
If you have an electric furnace, test to see whether the heat and fan come on as expected. Leave the switch in the “HG” position. If the fan does not come on when the thermostat calls for heat, change the switch position to “HE.”
The system selector has no effect in the cooling mode.
NOTE: “HG” position is for gas and most other systems. “HE” position is for certain electric systems having a fan relay.
■F°/C° selector (Fahrenheit/Centigrade)
Your thermostat is set for F° mode from the factory. In order to change to C° mode, slide the switch to C° and press reset button on the front of the thermostat with a paper clip. The reset button is located near the display.
NOTE: Unless reset button is pressed, the thermostat will not change the mode.
HE 
HG
C F
Connect Wires and Mount Thermostat Cover to Wall Plate
■Match and connect the labeled wires to the appropriate coded terminal screws on the mounting plate. (See Figure 3, 4.) Ignore any wires which may be present, but which were not connected to the old thermostat.