LADDER WiRiNG DIAGRAM
DANGER: ELECTRICAL SHOCK HAZARD DISCONNECT POWER BEFORE SERViCiNG
LEGEND
FIELDSPLICE
Q TERMINAL(MARKED)
o TERMINAL (UNMARKED)
• SPLICE
SPLICE (MARKED)
FACTORYLO VOLTAGE
FIELDCONTROLWIRING
FIELD POWERWIRING
ACCESSORYOR OPTIONAL
WIRING
FACTORYHIVOLTAGE
C CONTACTOR
CAP1 CAPACITOR,COMP
CAP2 CAPACITOR,INDUCER
CCH CRANKCASE HEATER
COMP COMPRESSORMOTOR
EQUIP EQUIPMENT
FS FLAME SENSOR
GND GROUND
HPS HIGH PRESSURESWITCH
I IGNITOR
IDM INDUCED DRAFT MOTOR
IDR INDUCER RELAY
IFM INDOOR FAN MOTOR
IGC INTERGRATEDGAS UNIT CONTROLLER
LGPS LOW GAS PRESSURESWITCH(WHENUSED)
LPS LOWPRESSURESWITCH
LS1 PRIMARY LIMITSWITCH
LS2 SECONDARYLIMIT SWITCH
MGV MAIN GASVALVE
OFM OUTDOOR FAN MOTOR
OT QUADRUPLETERMINAL
PL1 IGC TO INDUCERMOTOR PLUG
PL2 INDUCER MOTORPLUG
RS ROLLOUTSWITCH
SOL COMPRESSOR SOLENOID
TRAN TRANSFORMER
T-STAT THERMOSTAT
30 UNITCOMPONENTARRANGEMENT
F_
F_
OUTDOORFAN
SECTION
COMPRESS¢ INDOORFAN
SECTION SECTION
E
I_'_1_ r__
CONTROLBOXAREA
GAS []
SECTION (_
F_qm
HEATING FAN LOGIC
I I
0 52 T T+90,
Wl,W2, BLOWER Y1 T÷120,
ORWI+W2 ENERGIZEDDE-ENERGIZEDT+150,
ENERGIZED ORT+180
COOLING FANLOGIC
I I
0 I T T+60
Y1 BLOWER Y1 SLOWER
ENERGIZESENERGIZEDDE-ENERGIZES DE-ENERGIZED
NOTE:IFY2 DE-ENERGIZEDREMOVES
CALLFORCOOLING,OSECONDOFFDELAY
T-STAT
YA-_ PNK--
Y!__Z__ YEL-
G_ __ GRN--
W2___ BLK -
R___ RED--
OH_ __ BLU
,_Q
BRN
NOTES:
1. IF ANY OF THE ORIGINAL WIRES FURNISHEDARE REPLACED THEY
MUST BE REPLACEDWITH THE SAMEWIRE OR IT'S EQUIVALENT.
2. SEE PRE-SALE LITERATUREFOR THERMOSTATS.
3. USE 75 DEGREESC COPPERCONDUCTORS FOR FIELDINSTALLATION.
4. REFER TO INSTALLATIONINSTRUCTIONS FORCORRECT SPEED
SELECTION FOR IFM.
5. SEE INSTALLATIONINSTRUCTIONS FOR PROPER HEATINGAND
COOLING CONNECTIONS FOR YOUR UNIT.
6. ON SOME MODELS LS1AND LS2 ARE WIRED IN SERIES. ON OTHER
MODELS ONLY LS1 IS USED.
7. THIS FUSE IS MANUFACTUREDBY LITTLE FUSE, P/N 257005.
8. DO NOT DISCONNECT PLUG UNDER LOAD.
L2
C;1
USE COPPER CONDUCTORS ONLY i
LI FIELD SUPPLY
EQUIPGND
BLK 208/230 VAC. 60 HZ. 3PH
C D;21 OFM
3;11
C;11
IGC
m-7©
93-20--
J
Do C=D P3-10--
C_) 91-9 (_--
o__c=D
C=3 m-s (D--
I--(2_BLK_
_c::L_] c;_ c
L R_K _ COMP BRN C["(_-(_YEL'_
BLU I_ YEL --
Ie'_ CcH_EN USED IO'_
CCH _ BLK 0 L2
IFM_]"_ 'tEL 7 0 L2
L1 0 3LK ,,_--,,,J F--- SEE NOTE8
_ G-RN/YEL
\
SEE NOTE 8 PL22
rvI°iOivI°_ OIL2
"HIGH" PL1;2 _ K_ CAP2
p212 _II_ _ I_H \BL BRN_" I
PL2;3
04,,--v0-c.-.0
PL2;1
"LOW" PL1;3 II..... r_YELI_yEL '_ PL11
p213 im_b_ ....... _ - _L_ y_Li 0 ;_21_
1_1
BLK _ YEL-- _ L2
,oc
9,_s " 4VAO00
5A FUSE
_ FS
"FS°- --YEL_ ,_-GRN/YEL-- _GND
,,TI,, 0 I i ORNIIO TO-- BR_
91-2_ -BLU_
PI-5 O-- --BLU_
m-40-
-VlO _LS1 LS2_I
9_._o- --V,O_RED/_
91-so- -ORN_, _E,_SEOs_ENO_E_
i- -1
I PRESSURE
I I SWITCH
I I
LPNITACCESSORY
WHENUSED
-- BLK SOL
-- RED_)
P4-3"C"
-- BLU_GV _ GRN/YEL_
_/ _GRN/YEL IFM
--GRY F" - BLU:zF_[z_ _ i--BRN--
SEE NOTE415 _I -__
L -BLK_
•BRN--
II!11111Iil!1111!!1111111111IIII111II!111
48VG50#049REV,B
48VG500049 REV. B
Fig. 18 Cont. - 208/230-3-60 Ladder Wiring Diagram Gas Inputs 115, 130
I L3
YEL
C;23
C;13
A13025
27
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