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Carrier 50KQA - Page 30

Carrier 50KQA
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30
Typical wiring schematics (cont)
L
C
Y
O
R
G
12
(LOCATED IN COMPRESSOR COMPARTMENT)
FAN SPEED SWITCH
2
3
1
CR
NOTE 7
Common
SEE NOTE 5
Typical Heat Pump T-stat
WV
BRN
YEL
Alarm
SEE
NOTE 7
Ground
BRN
Compressor
24 VAC
Cooling
Fan
24V
BLU
Use copper conductors only.
Connection
Refer to Data Plate
Cord
Optional
See Note 2
Power Supply
L2
L1
BR
BLK
NOTE 3
(115V)
WHT
RED
BRN
(265V)
(208V)
230V
ORG
BR
10 1
BRN
CR
0
SEE
YEL
Neutral on 265V Systems
Ground
L2 (ribbed)
L1 (plain)
PB
Trans
SEE
CAP
BLK
COM
F
C
H
BLK
YEL
NO
BRN
RED
BLK
2
6
RVS
Not UsedNot Used
ORG
RED
LOC
BRN
VIO
BRN
VIO
GRY
GRY
RED
BLU
RED
FP2
FP1
HP
BLK
FSS
NOTE 4
SEE
Compressor
B (HIGH)
A (LOW)
BM
1
2
BLU
BLK
RED
4
8
R
S
C
DM
BRNGRY BRN
BRNYEL
YEL
RED
Cap
PB
Ground
CR
BR
Transformer
Complete
C
outside control box
Wiring acceptable
Class 1 or 2
control box
required inside
Class 1 Wiring
YEL
3
2
1
power supply connection
Refer to Disconnect
box for optional
ORG
YEL
Not Used
Compressor
G
Status
LED
JW1
SEE NOTE 6
AL2
AL1
A
P1
C
Relay
Alarm
Control Logic
Microprocessor
C
Y
O
R
G
W
Y
C
R
BR
FP1 Low Temp
FP2 Low Temp
NOTE 4
JW2
JW3
Test Pins
SEE
Off On
Dip Switch
1
2
UPM
Relay
BRG
CCG
CC
RV
10
EH2
EH1
CO
P3
CO
DC
24V
P2
12
4
FP1
FP2
7
8
9
6
5
HP
LOC
3
2
1
BLOWER MOTOR WIRING
UNIT SIZE POLE A POLE B
007 5 3
009 5 3
012 5 4
015 4 3
019 4 3
NOTES:
1. Compressor and Blower Motor thermally pro-
tected internally.
2. All wiring to the unit must comply with NEC
and local codes.
3. Transformer is wired to 115V (WHT) lead for
115/1/60 units, 265V (BRN) Lead for 265/1/
60 units or 208V (RED) Lead for 208/1/60.
For 230/1/60 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 solu-
tions, 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 Com-
plete C board standoffs and screws to Con-
trol Box. (Ground available from top two
standoffs as shown.)
AL
Alarm Relay Contacts
BM
Blower Motor
BR
Blower Relay
Cap
Capacitor
CO
Condensate Overflow
CR
Compressor Relay
DM
Damper Motor
FP1
Sensor, Water Coil Freeze Protection
FP2
Sensor, Air Coil Freeze Protection
FSS
Fan Speed Switch
HP
High-Pressure Switch
JW1
Jumper Wire for Alarm
LOC
Loss of Charge Pressure Switch
P1
Field Wiring Terminal Block
PB
Power Terminal Block
RVS
Reversing Valve Solenoid
Trans
Transformer
UPM
Unit Performance Monitor
WV
Water Valve
REMOTE-MOUNTED THERMOSTAT WITH COMPLETE C CONTROLLER
----------
Field Line Voltage Wiring
Field Low-Voltage Wiring
Printed Circuit Trace
Optional Low Voltage
Wiring
Relay Contactor Coil
Solenoid Coil
Thermistor
Ground
LEGEND

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