BR BR
W BK
d6
BL
□
M2 Ml
HEAT
NEUTRAL
OR
N
R
A FURNACE
~CONTROL
BOARD
FAN
TYPICAL
o----
fl
I ---'---
1
HEAT PUMP THERMOSTAT L0,
TYPICAL OUTDOOR UNIT WITH SOLID
STATE DEMAND DEFROST CONTROL
CCH
CHC
OS
0 -+------,
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!!I:
NOTE: LOW VOLTAGE FIELD CONNECTIONS
THE SAME FOR ALL OUTDOOR UNIT
ARE
MODELS.
ffi IDENTIFICATION SHOWN FOR OUR PRODUCTS,
OTHERS MAY VARY FROM THAT SHOWN.
REFER TO WIRING DIAGRAM ON SPECIFIC GAS OR OIL FURNACE
ffi THIS COMPONENT IS ENERGIZED IN THE HEATING MOOE.
~----------------~
BR
CC
CCH
CH[
COMP
CT
OAS
OFC
BLOWER RELAY
COMPRESSOR CONTACTOR
CRANKCASE HEATER IOPT>
CRANKCASE HEATER CONTROL <OPTI
COMPRESSOR
CONTROL TRANSFORMER
DEFROST AMBIENT SENSOR
DEFROST CONTROL
OR
OS
FU
GV
HGS
HMR
HPC
IBM
DEFROST RELAY
DEFROST COIL SENSOR
FUSE
GAS VALVE
HOT GAS SENSOR IOPTI
HEAT MONITOR RELAY IOPTI
HIGH PRESSURE CONTROL
INDOOR BLOWER MOTOR
LAC
LAA
OFM
OT
PC
PS
RC
LOW AMB. CODLING CONTROL tOPTI
LOW AMBIENT RELAY IOPTI
OUTDOOR FAN MOTOR
OUTDOOR THERMOSTAT COPTI
PRESSURE CONTROL IOPTI
PLENUM SENSOR
RUN CAPACITOR
RV
SC
SR
TDC
TS
X
*
RE VERSING VAL VE
START CAPACITOR IOPTI
START RELAY <OPT>
TIME DELAY CONTROL IOPTI
TOGGLE SWITCH
WIRE NUT
OPTIONAL
WIRE CODE
FACTORY WIRING ---
FIELD WIRING - - - -
WIRE COLOR CODE
BK BLACK PR PURPLE
BL BLUE R RED
BR BROWN W WHITE
G GREEN Y YELLOW
O ORANGE 90·21780-30
"-,I
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