Carrier 50KQA Product Data page 27

Power Supply
Refer to Data Plate
Use copper
conductors only.
See Note 2
Refer to Disconnect
box for optional
power supply connection
Optional
Cord
L2 (ribbed)
Connection
L1 (plain)
SEE
NOTE 7
YEL
RED 2A
1
ORG
ORG
2
PBS
RED UMT
3A
2
3
YEL
3
GRY
RED
BRN
BRN
1A 1
DM
PBS
ORG
YEL YEL YEL
1B
RED
TIME CLOCK
CLOSED=UNOCCUPIED
BRN
OS
WHT
GRY
RED WHT
YEL
WV
NLL
GRY
RED
GRY
5 5A
RED PBS
6 6A
RED
7 7A
GRY
AL — Alarm Relay Contacts
— Blower Motor
BM
Cap — Capacitor
CB — Circuit Breaker
CO — Condensate Overflow
CR — Compressor Relay
DM — Damper Motor
FP1 — Sensor, Water Coil Freeze Protection
FP2 — Sensor, Air Coil Freeze Protection
HP — High-Pressure Switch
LOC — Loss of Charge Pressure Switch
NLL — Night Low Limit Thermostat
OS — Override Switch
PB — Power Terminal Block
PBS — Push Button Switch
RVS — Reversing Valve Solenoid
Trans — Transformer
— Unit Mounted Thermostat
UMT
UPM — Unit Performance Monitor
WV — Water Valve
MANUAL CHANGEOVER WITH DELUXE D CONTROLLER
Ground
Neutral on 265V Systems
RED
L2
L1
BRN
CB
(265V)
BLK
Trans
Ground
RED
(208V)
ORG
WHT
230V
(115V)
YEL
SEE
NOTE 3
BLU
C
R C
COM2
R
P1
Y1 1
2
Y2
W1 3
4
O/W2
5
G
6
R
7
C
8
AL1
SEE
ALARM NOTE 6
P2 RELAY
JW4
AL2
AL2 DRY
R
NSB
C
ESD
OVR
H
A
P3
R
NO1
ACC1
NC1
RELAY
COM
OFF ON
1
UPM: Disable/Enable
NO2
2 Unit Stage: 2/1
ACC2
NC2
T'stat: Heat Cool/Heat Pump
3
RELAY
RV on B/RV on O
4
COM
Dehumid/Normal
5
Not Used
6
R
7 Boilerless: Enable/Disable
8 Boilerless: 40°F/50°F
S1
DIP SWITCH
PACKAGE
LEGEND
---------- Field Line Voltage Wiring
Field Low-Voltage Wiring
Printed Circuit Trace
Optional Low Voltage
Wiring
Relay Contactor Coil
Solenoid Coil
Thermistor
Ground
Mate-N-Lock
H
BLU
CAP
6 8
C
RED RED
CR
F
BLK 2 4
BLK
2 B (HIGH)
BRN
BM
YEL
1 A (LOW)
GRY
S
S C
COM1
GRY
D
Microprocessor
Control Logic
STATUS
G
TEST
R
FAULT
RV
RELAY
TEST
PINS
SEE
JW3
FP1 Low
NOTE 4
JW2
FP2 Low
JW1
LP N.O.
OFF ON
1
ACC1
2
Functions
3
4
ACC2
5
Functions
6
H: hi fan/dehumid
7
Not Used
8
S2
DIP SWITCH
PACKAGE
NOTES:
1. Compressor and Blower Motor thermally protected
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. Trans-
former 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 unit-mounted thermostat wiring shown.
6. 24 V Alarm Signal shown. For Dry Alarm Contact, cut
AL2DRY (JW4) Jumper and Dry Contact will be avail-
able between AL1 and AL2.
7. Transformer secondary ground via Deluxe D board
standoffs and screws to Control Box. (Ground avail-
able from top two standoffs as shown.)
PB
Cap
S Compressor
R
C
BLK
RED
Deluxe
D
UMT
FAN ENABLE
RELAY
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSED
COM
TERMINALS 1
NO
1A 1B 2A 3A 4A 5A 6A 7A 8A
STOP X
X
FAN ONLY
FAN
LOW COOL O
COM
SPEED
RELAY O
HIGH COOL
LOW HEAT X
HIGH HEAT X
NO NC
1
RED
HP
HP
2 RED
3
BLU
LOC
LOC
BRN
4
5
GRY
FP1
FP1
6
Y GRY
7
VIO
FP2
FP2
8 VIO
9
BRN
RV
RVS
10
ORG
Not Used
12
CO
P7
24V
DC
EH1
BLOWER MOTOR WIRING
EH2
UNIT SIZE
P6
007
CCG
BRN
1 009
COMPR
012
CR
RELAY
015
CC
YEL
0
019
Ground
CR
Transformer
OS
PBS
O = OPEN
2 3 4 5 6 7 8
O O O O O O O O
O O O O X O O O
X X O O O X O O
X X O O O O X O
O O X X O X O O
O O X X O O X X
SEE
NOTE 4
POLE A POLE B
5 3
5 3
5 4
4 3
4 3
27