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Sample Wiring Diagrams
Gas or Electric Heat
Dual Transformer 5 Wire, 1 Stage Cooling, 1 Stage Heating
Residential Gas or Electric Heat, Electric Cool, split systems & package
units. For jumper configuration see pages 18 and 19.
Remove the
factory installed
jumper between
RC and RH
Heating System
POWER
HEAT
FAN
GAS OR
ELECTIRC HEAT
Cooling System
POWER COOL
COMPRESSOR
*If a common wire is used it must be connected to the furnace common
terminal. If a common wire is not used the thermostat must be powered by
two AA alkaline batteries. These batteries must be replaced (page 10) each year
or when the Low Battery indicator is displayed (page 3).
Common wire optional
C O/B Y W G RC RH
5 Conductor 18 to 22 gauge
unshielded cable from the
thermostat to both sets of
equipment.
17
*
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