Specifications

TYPICAL WIRING SCHEMATIC — CEILING SUSPENDED SYSTEM
LEGEND
ASM — Air Sweep Motor
ASR — Air Sweep Relay
C—Contactor
CAP — Capacitor
CH — Crankcase Heater
CKT BD — Circuit Board
CLO — Compressor Lockout
COMP — Compressor
CR — Control Relay
CT — Current Transformer
DFB — Defrost Board
(Outdoor Unit)
DFT — Defrost Thermostat
DR — Defrost Relay
EQUIP
GND
— Equipment Ground
FL — Fuse Link
FPT — Freeze Protection
Thermostat
FR — Fan Relay
FU — Fuse
HP — Heat Pump
HPS — High-Pressure Switch
HR — Heater Relay
HTR — Heater
HTT — Heater Temp. Thermostat
IFM — Indoor-Fan Motor
LED — Light-Emitting Diode
LLPS — Liquid Low-Pressure Switch
N.C. — Normally Closed
N.O. — Normally Open
OFM — Outdoor-Fan Motor
OL — Overload
PDR — Pump Delay Relay
PL — Plug
PM — Pump Motor
PSS — Pump Shut-Off Switch
RIDTS — Remote Indoor Temp. Sensor
RS1 — Indoor Remote Sensor
RS2 — Not Used
RS+V — Remote Sensor Common
RVS — Reversing Valve Solenoid
SC — Start Capacitor
SR — Start Relay
TB — Terminal Block
TDR — Time Delay Relay
TP — Test Point
TRAN — Transformer
Terminal (Marked)
Terminal (Unmarked)
Splice
Terminal Block
Factory Wiring
Field Control Wiring
Field Power Wiring
Printed Circuit Board
Accessory or Optional
Wiring
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. Wire in accordance with National Electrical Code (NEC) and all local codes.
3. Transformer is thermally protected and will reset automatically.
4. IFM(S), OFM, and COMP have internal thermal protection.
5. The CLO locks out the compressor to prevent short cycling on compressor overloads and safety devices. Be-
fore replacing CLO, check these devices. Minimum one amp turn required to hold contacts closed.
RELAY CHART
INDOOR FAN HIGH FR2
INDOOR FAN MED FR1, FR2
INDOOR FAN LOW FR1
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