2
Copyright
©
2015 Nortek Security & Control
Typical Wiring for Standard Gas/Electric HVAC System
THERMOSTAT CONNECTION
C 24VAC COMMON
R 24VAC RETURN
W1 HEAT STAGE 1
W2 HEAT STAGE 2
G FAN
Y1 COMPRESSOR STAGE 1
Y2 COMPRESSOR STAGE 2
TYPICAL THERMOSTAT WIRING COLORS.
CAUTION: VERIFY THAT ORIGINAL WIRING
MATCHES. COLORS MAY BE DIFFERENT
STANDARD HVAC SYSTEM
BLUE
RED
WHITE
ORANGE
GREEN
YELLOW
BLACK/BROWN
THERMOSTAT BACK PANEL
INTERNAL
RC=RH
JUMPER
C
WIRE IS NOT REQUIRED
FOR BATTERY OPERATION
C
WIRE IS REQUIRED FOR
24VAC OPERATION
DEFAULT THERMOSTAT SETUP:
TYPE: STANDARD HVAC
FAN: GAS HEAT
1 STAGE HEATING
1 STAGE COOLING
NO SETUP CHANGE REQUIRED
FOR THIS CONFIGURATION
Y2 Y1 G RC C RH W1 W2
FOR SINGLE
TRANSFORMER SYSTEMS
CONNECT
R
WIRE TO
EITHER
RC
OR
RH
TERMINAL
FOR SYSTEMS WITH SEPARATE
HEATING AND COOLING
TRANSFORMERS, CONNECT
HEATING
R
TO
RH
AND COOLING
R
TO
RC
.
NOTE!
THE
RC-RH
JUMPER
MUST
BE CUT
ON THE THERMOSTAT BOARD.
