14
iThermostat
™
Installation Manual
RC/PS
switch
7) Set iThermostat switches.
Set the
ELEC / GAS switch
to the correct setting:
o
If you have
electric heat or a heat pump
, set
the switch to
ELEC
.
o
If you have
gas heat
, set the switch to
GAS
.
Set the
RC / PS switch
to the correct setting:
o
If you
connected a wire to the C terminal
(24 VAC Common), set the switch to
RC
.
o
If you
did not connect a wire to the C
terminal
, set the switch to
PS
.
Note: RC/PS switch must be in correct position or thermostat may not function properly.
8) Engage batteries.
Two AA alkaline batteries with a battery tag to prevent power drainage are included in the iThermostat.
You must remove the battery tag (positive end of left battery) to engage the batteries.
Batteries are not required. However, with batteries installed, your iThermostat will maintain the time
and continuously display temperature even during a loss of AC power.
9) Turn power back ON at breakers and air handler light switch.
ELEC/GAS
switch
24 VAC Common Terminal
