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C
— Contactor, Compressor
CAP
— Capacitor
CLO
— Compressor Lockout
COMP — Compressor Motor
EQUIP — Equipment
FPT
— Freeze Up Protection Thermostat
FU
— Fuse
GND
— Ground
HPS
— High-Pressure Switch
HS
— Hall-Effect Sensor
I
— Ignitor
IDM
— Induced-Draft Motor
IFC
— Indoor Fan Contactor
IFM
— Indoor Fan Motor
IGC
— Integrated Gas Unit Controller
LPS
— Low-Pressure Switch
LS
— Limit Switch
MGV
— Main Gas Valve
Fig. 59 — Typical Wiring Schematic and Component Arrangement (208/230-3-60 Shown)
LEGEND
OFM
— Outdoor (Condenser) Fan Motor
OLR
— Overload Relay
P
— Plug
PL
— Plug Assembly
QT
— Quadruple Terminal
RS
— Rollout Switch
SAT
— Supply Air Temperature Sensor
TRAN — Transformer
Field Splice
Marked Wire
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
—
—
44
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. Use copper conductors only.
4. TRAN is wired for 230 v unit. If unit is to be run with 208 v
power supply, disconnect BLK wire from 230 v tap (ORN)
and connect to 208 v tap (RED). Insulate end of 230 v tap.
Splice
Splice (Marked)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
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Table of Contents
Troubleshooting
