Copyright
©
2020 Nortek Security & Control
3
2
Copyright
©
2020 Nortek Security & Control
Typical Wiring for Standard Gas/Electric HVAC System
THERMOSTAT CONNECTION
C - 24VAC COMMON
HUM+
HUM–
W3
RH
RC - 24VAC POWER
W1 - HEAT STAGE 1
G - FAN
Y1 - COMPRESSOR STAGE 1
Y2 - COMPRESSOR STAGE 2
STANDARD HVAC SYSTEM
RED
ORANGE
GREEN
YELLOW
BLACK/BROWN
THERMOSTAT BACK PANEL
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
HUM+
HUM–
W3
G
RC
C
RH
W1 W2
Y2 Y1
FOR SINGLE
TRANSFORMER SYSTEMS
CONNECT
R
WIRE TO
EITHER
RC
OR
RH
TERMINAL WITH JUMPER
WHITE
BLUE
TYPICAL THERMOSTAT WIRING COLORS.
CAUTION:
VERIFY THAT ORIGINAL WIRING
MATCHES. COLORS MAY BE DIFFERENT.
NOTE:
FOR SYSTEMS WITH
SEPARATE HEATING AND
COOLING TRANSFORMERS,
PLEASE REMOVE THE JUMPER
CONNECTING
RC
AND
RH
TERMINALS FIRST AND THEN
CONNECT HEATING
R
TO
RH
AND COOLING
R
TO
RC
.
PLEASE SEE PAGE 8.
W2 - HEAT STAGE 2
Typical Wiring for Heat Pump HVAC System
THERMOSTAT CONNECTION
C - 24VAC COMMON
HUM+
HUM–
W3
RH
RC - 24VAC POWER
W1 - HEAT STAGE 1
G - FAN
Y1 - COMPRESSOR STAGE 1
Y2 - COMPRESSOR STAGE 2
TYPICAL THERMOSTAT WIRING COLORS.
CAUTION:
VERIFY THAT ORIGINAL WIRING
MATCHES. COLORS MAY BE DIFFERENT.
RED
ORANGE
GREEN
YELLOW
BLACK/BROWN
THERMOSTAT BACK PANEL
HUM+
HUM–
G
RC
C
RH
AUX/E O/B
Y2 Y1
WHITE
BLUE
HEAT PUMP HVAC SYSTEM
C
WIRE IS NOT REQUIRED
FOR BATTERY OPERATION
BATTERIES ARE NOT
REQUIRED FOR 24VAC
POWERED SYSTEMS
CONNECT THE
R
WIRE TO
EITHER R TERMINAL WITH
JUMPER
O
or B WIRE
NOTE!
MOST HEAT PUMP
SYSTEMS DO HAVE THE
C
WIRE AND THE THERMOSTAT
CAN BE POWERED BY THE
24VAC FROM THE HVAC SYSTEM
NOTE:
IF HEATING IS OCCURING
WHEN COOOLING IS EXPECTED,
OR VICE-VERSA, CHANGE THE
CHANGEOVER TYPE TO THE
OPPOSITE SETTING.
R
and
R
are connected via a jumper
O CHANGEOVER VALVE