
21 Rev. 1
SCHEMATICS
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
WARNING
!
GUIC and GCIC
WR50A50 INTEGRATED IGNITION CONTROL
This schematic is for reference only. Not all wiring is as shown above,
refer to the appropriate wiring diagram for the unit being serviced.
.001
1M
3M
K6
K1b
K2a
K1a
HEAT. COOL. PARK. PARK.
CIR
NEU
K7
K8
GAS
VALVE.
HIGH.
LIMIT.
AUX
LIMIT.
PRESSURE.
SWITCH
FLAME
SENSOR
PROBE
IGNITOR
FP
IGNN
IGN
GND
MV MV PS
HLO
HLI
CIRCULATOR
BLOWER
XFMR
HOT
XFMR
NEU
24 VAC
TH
RO1
RO2
R
TR
C
Y
G
W
COMPRESSOR
CONTACTOR COIL
THERMOSTAT
R
Y
G
W
INDUCER
K5a
IND
HUMIDIFIER
ELECTRONIC
AIR CLEANER
EAC
NEU
EAC
HUM
NEU
HUM
K5b
K4
ROLLOUT
SWITCH
LINE HOT
120 VAC
LINE NEU
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