Carrier 50KQL-1PD User Manual

29

COMPLETE

C

CONTROL

BR

CR

CAP

PB

GROUND

TRANSFORMER

BRN

YEL

Y

W

O

G

R

C

AL1

AL2

A

P1

ALARM

RELAY

SEE
NOTE 6

JW1

WV

COMPRESSOR

COOLING

FAN

24 VAC

COMMON

ALARM

CLASS 1 WIRING
REQUIRED INSIDE
CONTROL BOX

Y

O

G

R

C

L

CLASS 1 OR 2
WIRING ACCEPTABLE
OUTSIDE
CONTROL BOX

TYPICAL HEAT PUMP T-STAT

SEE NOTE 5

BRN

YEL

BLU

R

Y

JW3

FP1

JW2

FP2

SEE
NOTE 4

COMPR.
RELAY

STATUS
LED

G

COMPLETE C

MICRO-

PROCESSOR

CONTROL

LOGIC

CO

DIP SWITCH

OFF ON

PM: DISABLED/
ENABLED
STAGE 2: 2/1
NOT USED
NOT USED

FP1/FP2
FAULTS: 3/1

1

2
3
4

5

C

TEST PINS

YEL

HP

LOC

FP1

FP2

RV

CO12

P2

24V
DC

EH1
EH2

P3

HP

LOC

FP1

FP2

RVS

CO

SEE
NOTE 4

RED

RED

BLU

BRN

GRY

GRY

VIO

VIO

BRN

ORG

NOT USED

1
2
3

4
5
6

7

8

9

10

RED

(220V)

ORG (240V)

CB

BLK TRANS

24V

SEE
NOTE 7

BR

BRG

CCG

SEE
NOTE 7

CC

YEL

BRN

1

0

CR

BRN

BRN

GRY

YEL

BR

DM

BRN

YEL

ORG

YEL

1

0

BLK

ORG
230V

24V

TRANS

CB*

POWER SUPPLY

REFER TO DATA PLATE

USE COPPER CONDUCTORS ONLY.

SEE NOTE 2

REFER TO DISCONNECT

BOX FOR OPTIONAL

POWER SUPPLY CONNECTION

GROUND

L2

L1

OPTIONAL
CORD
CONNECTION

RED

NEUTRAL ON 265V
SYSTEMS

L2 (ribbed)

GROUND

L1 (plain)

PB
1

2

H

C

F

CAP

RED

RED

6

8

2

4

BLK

BLK

R

S

C

CR

BLU

COMPRESSOR

BRN

YEL

BLK

2

1

BM

B (HIGH)

A (LOW)

RED

BLK

FSS 1

2

BLK

BR

NO

COM

115
208
230
265

WHT
RED
ORG
BRN

LEAD COLOR

VOLTAGE

TRANSFORMER PRIMARY

LEAD COLORS

SEE
NOTE 3

— Alarm Relay Contacts

— Blower Motor

— Blower Relay

— Capacitor

— Circuit Breaker

— Sensor, Condensate Overflow

— Compressor Relay

— Damper Motor

— Sensor, Water Coil Freeze Protection

— Sensor, Air Coil Freeze Protection

— Fan Speed Switch

— High-Pressure Switch

— Jumper Wire for Alarm

— Loss of Charge Pressure Switch

— Power Terminal Block

— Push Button Switch

— Performance Monitor

— Reversing Valve Solenoid

TRANS — Transformer
WV

— Water Valve

Field Line Voltage Wiring
Field Low-Voltage Wiring

LEGEND

Printed Circuit Trace

Relay/Contactor Coil

Solenoid Coil

Thermistor

Circuit Breaker

Relay Contacts-N.O.

Switch-High Pressure

Switch-Low Pressure

Ground

Wire Nut

Mate-N-Lock

>>

*Optional wiring.

NOTES:

1. Compressor and blower motor thermally protected

internally.

2. All wiring to the unit must comply with local codes.
3. Transformer is wired to 115-V (WHT) lead for 115/

1/60 units, 265-V (BRN) lead for 265/1/60 units or
208-V (RED) lead for 208/1/60 units.
For 203/1/60 switch RED and ORG leads at L1
and insulate 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 Installation Instructions for wiring to
the unit.

6. 24-V alarm signal shown. For dry alarm contact,

cut JW1 jumper and dry contact will be available
between AL1 and AL2.

7. Transformer secondary ground via Complete C

board standoffs and screws to control box.
(Ground available from top two standoffs as
shown.)