Product data

TYPICAL WIRING SCHEMATIC IN-CEILING CASSETTE SYSTEMS

LEGEND

C—Contactor

CAP — Capacitor

CKT BD — Circuit Board

CLO — Compressor Lockout

COMP — Compressor

CR — Control Relay

CT — Current Transformer

DR — Defrost Relay

EQUIP.

GND.

— Equipment Ground

FPT — Freeze Protection

Thermostat

FR — Fan Relay

HPS — High Pressure Switch

IFM — Indoor Fan Motor

LPS — Low Pressure Switch

OFM — Outdoor Fan Motor

OL — Overload

PDR — Pump Delay Relay

PL — Plug

PM — Pump Motor

PSS — Pump Shutoff Switch

RIDTS — Remote Indoor Temperature

Sensor

TB — Terminal Block

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 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. Before re-

placing CLO, check these devices. Minimum one amp turn required to hold contacts closed.