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Fig. 48 — Typical Unit Wiring Diagram
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
C—Contactor, Compressor
CAP — Capacitor
COMP — Compressor Motor
EQUIP — Equipment
FPT — Freeze Up Protection Thermostat
FU — Fuse
GND — Ground
GVR — Gas Valve Relay
HPS — High-Pressure Switch
HS — Hall-Effect Sensor
I—Ignitor
IDM — Induced-Draft Motor
IFC — Indoor Fan Contactor
IFM — Indoor (Evaporator) Fan Motor
IGC — Integrated Gas Unit Controller
LPS — Low-Pressure Switch
LS — Limit Switch
MGV — Main Gas Valve
Splice
Splice (Marked)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
NOTES:
1. If any of the original wire furnished must be
replaced,itmustbereplacedwithtype90Cwireor
its equivalent.
2. Three phase motors are protected under primary
single phasing conditions.
4. Use copper conductors only.
6. 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.