Complete C

11

LEGEND

AL

Alarm Relay Contacts

LOC

Loss of Charge Pressure Switch

BM

Blower Motor

MV

Motorized Valve

BMC

Blower Motor Capacitor

MVES

Motorized Valve End Switch

BR

Blower Relay

NEC

National Electrical Code

CAP

Compressor Capacitor

P1

Field Wiring Terminal Block

CB

Circuit Breaker

PSC

Permanent Split Capacitor

CC

Compressor Contactor

RV

Reversing Valve Coil

CO

Sensor, Condensate Overflow

TRANS

Transformer

FP1

Sensor, Low Temperature Protection Water Coil

TXV

Thermostatic Expansion Valve

FP2

Sensor, Low Temperature Protection Air Coil

 

Field Line Voltage Wiring

HP

High-Pressure Switch

 

Field Low Voltage Wiring

HPWS — High-Pressure Water Switch

 

 

Printed Circuit Trace

HWTS

High Leaving Water Temperature Switch

 

JW1

Jumper, Alarm

 

Optional Wiring

 

 

 

*Optional.

Relay/Contactor Coil

Condensate Pan

Solenoid Coil

Temperature Switch

a50-8490

 

Thermistor

 

Ground

 

Wire Nut

 

NOTES:

1.Compressor and blower motor thermally protected internally.

2.All wiring to the unit must comply with NEC and local codes.

3.Transformer for 208/230 v will be connected for 208 v operation. For 230 v operation, switch RED wire to ORG wire. Insulate open end of RED lead. Transformer is energy limiting or may have circuit breaker.

4.FP1 thermistor provides freeze protection for water. When using anti- freeze solutions, cut JW3 jumper.

5.Typical heat pump thermostat wiring shown. Refer to thermostat installa- tion instructions for wiring to the unit. Wire “Y” from thermostat to “Y” Complete C when a motorized valve is not used. “O” terminal is not used in cooling only applications. Thermostat wiring must be Class 1 and volt- age rating equal to or greater than unit supply voltage.

6.24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and for anti-freeze solutions, cut JW3 jumper.

7.Transformer secondary ground via green wire with yellow stripe from “C” terminal to control box.

8.Hot water generator pump only in models with hot water generation and internal pump option.

9.For auxiliary staging options, consult electric heat installation manual.

10.Fan motors factory wired for medium speed. For high or low speed, remove BLU wire from fan motor speed trap “M” and connect to “H” for high speed or “L” for low speed.

11.Aquastat is with unit and must be wired in series with the hot leg to the pump. Aquastat is rated for voltage up to 277 v.

Fig. 13 — 50PCH,PCV Units with Complete C Controller, Single-Phase

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Carrier 50PCH specifications A50-8490

50PCH specifications

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