Lennox 10GCS-024 - Page 10

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12GCS Series Gas Packaged Units
Typical Wiring Diagram
HEATING COOLING
UNIT SPEED SPEED
12GCS024=50 MEDIUM LOW
12GCS024-75 HIGH LOW
12GCSOSO-50 MEDIUM* MEDIUM
12GC5030-75 HIGH MEDIUM
IZGCSO36-50 MEDIUM HIGH
i2GCS036-75 HIGH * HIGH
i2GCSO3S=IOO HIGH HIGH
12GCS042-75 HIGH HIGH
12GCSO42-100 HIGH ÷ HIGH
12GCSO¢8=IOO MEDIUM* MEDIUM
12GC5048-125 HIGH MEDIUM
12GCSOEO-IO0 MEDIUM HIGH
E2GCSO60=125 HIGH HIGH
?
83
BLOWER
MOTOR
B4
CONDENSER
FAN MOTOR
S_O
AUTO RESET
LIMIT SWITCH
(_) CI2 $18 $21
DUAL CAPACITOR PRESSURE AUTO RESET AUX,
SWITCH LIMIT SWITCH
COMBUSTION
AIR
BLOWER
Bl
COMPRESSOR
* JUMPER REQUIRED
IF JUMPER IS NOT USED,
CONNECT BLUE WIRE ON UNUSED
TERMINAL TO HEAT.
NOTE-IF ANY WIRE IN THIS APPLIANCE IS REPLACED, IT
MUST BE REPLACED WITH WIRE OF LIKE SIZE, RATING
AND INSULATION THICKNESS.
Z_ USE JUMPER ONLY IF HEAT AND COOL
ARE THE SAME SPEED,
/2_ B6 (CAB) IS ENERGIZED FOR IO SECONDS
AT THE START OF EACH COOLING CYCLE
KI-E
COMPRESSOR
CONTACTOR
C12
DUAL
K2
COMPRESSOR
RD
KE-2
COMPRESSOR
CONTACTOR
L2
BA
CONDENSER
FAN MOTOR
CAPACITOR T
COMBUSTIO#
AIR BLOWER
$47
[_ MANUAL RESET
ROLLOUTSWITCH ELECTRIC/SENSOR
GVI C_
GAS BLOWER MOTOR
VALVE CAPACITOR
A3
BLOWER/IGNITION
CONTROL
R G W C Y HTG, ACC.
CWB LWR
TBI _
ACB'=_OOL
ACB=HEAT
GROUND UN'_SED
ELECTRODE
B4VAC FLAME @
_HOT
CONTROL BOX
DL8
TIMED
OELAY
RELAY
TRANSFORMER
Ki
CONTACTOR
BLUE
YE_LLO_ Q'"
RED(R_
GREEN(G_
WHITE(W)
A3
DISCONNECT ALL POWER
BEFORE SERVICING
208-230/60/I
L2
USE WITH COPPER
CONDUCTORS ONLY
MINIMUM 75°C WIRE
_E. SI
THERMOSTAT
--'jII
JI
_1
d
HEAT ANTICIPATION SETTING- 0,75
LINE VOLTAGE FIELD INSTALLED
24 VOLT FIELD INSTALLED
NEC/CEC CLASS 2
NOTE-ALL REMAINING WIRES
FACTORY INSTALLED
I_ENNDX_ ......._oo.WIRINGDIAGRAMo4LO_
COMBINATION UNITS-ROOFTOP
I 2GC5024-50,75-2, -3-P
12GCS03O-50,75-2, -3-P
12GCSO36-50,75, 100-2, -3-P
12GCS042-75, 100-2, -3-P
12GCSO48- I DO, 125-2, -3, -A-P
12GCSOBO- IOO, 125-2, -3, -A-P
Supersede_ Form No. I New Form No-
533,467W ] 534,450W
Lithe U.S,A.