![background image](http://html.mh-extra.com/html/carrier/50kqa/50kqa_product-data_2563323029.webp)
29
L2
L1
1
PB
2
SEE
NOTE 4
CR
Ground
CB
Use copper
Connection
Refer to Data Plate
Cord
Optional
conductors only.
Power Supply
BLK
NOTE 3
(115V)
WHT
RED
BRN
(265V)
(208V)
230V
ORG
1
BRN
CR
0
YEL
Neutral on 265V Systems
Ground
L2 (ribbed)
L1 (plain)
Trans
SEE
CAP
GRY
F
C
H
YEL
BRN
RED
BLK
2
6
RVS
Not Used
ORG
RED
LOC
BRN
VIO
BRN
VIO
GRY
GRY
RED
BLU
RED
FP2
FP1
HP
BLK
NOTE 4
SEE
Compressor
B (HIGH)
A (LOW)
BM
1
2
BLU
BLK
RED
4
8
R
S
C
RED
YEL
YEL
3
3A
DM
BRN
ORG
RED
5
YEL
ORG
6
4
3
1
2
YEL
BRN
WV
YEL
RED
PBS
NLL
RED
OS
WHT
RED
UMT
RED
WHT
BLU
YEL
GRY
GRY
7A
6A
PBS
7
6
RED
GRY
5
5A
TIME CLOCK
CLOSED=UNOCCUPIED
GRY
RED
RED
See Note 2
GRY
GRY
UMT
Cap
PBS
Transformer
PB
Ground
CR
OS
Refer to Disconnect
power supply connection
box for optional
BRN
ORG
YEL
NO
COM
NC
SPEED
RELAY
FAN
Boilerless: Enable/Disable
T'stat: Heat Cool/Heat Pump
JW1
JW2
FP2
JW3
FP1
P3
NC1
COM
COM
NC2
NO2
NO1
R
R
ACC2
RELAY
RELAY
ACC1
DIP SWITCH
PACKAGE
Boilerless: 40
°
F/50
°
F
Dehumid/Normal
Unit Stage: 2/1
RV on B/RV on O
UPM: Disable/Enable
Not Used
2
8
4
6
7
5
3
S1
1
OFF
ON
LP
RELAY
ALARM
C
7
ESD
OVR
AL2
NSB
A
H
C
R
AL1
P2
8
Y1
O/W2
G
R
W1
Y2
P1
1
4
6
5
3
2
R
C
AL2 DRY
NOTE 6
SEE
PINS
TEST
COM2
C
R
COM1
S
S
C
24V
DIP SWITCH
PACKAGE
H: hi fan/dehumid
ACC2
Not Used
Functions
Functions
ACC1
2
S2
6
7
8
4
5
3
N.O.
OFF
Low
Low
1
ON
COMPR
RELAY
CC
CCG
P6
EH2
DC
EH1
COM
FAN ENABLE
Control Logic
RELAY
FAULT
STATUS
R
RV
G
TEST
Y
Microprocessor
D
NO
1
FP2
CO
P7
RV
9
8
4
FP1
6
7
5
LOC
HP
3
2
RELAY
JW4
SEE
NOTE 7
Deluxe
D
BLOWER MOTOR WIRING
UNIT SIZE
POLE A
POLE B
007
5
3
009
5
3
012
5
4
015
4
3
019
4
3
PUSH BUTTON SWITCH ATTRIBUTES
X = CLOSED O = OPEN
TERMINALS
1
2
3
4
5
6
7
8
1A 1B 2A 3A 4A 5A 6A 7A 8A
STOP
X
O
O
O
O
O
O
O
O
FAN ONLY
X
O
O
O
O
X
O
O
O
LOW FAN
X
O
O
X
X
O
X
O
O
HIGH FAN
X
O
O
X
X
O
O
X
X
----------
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
>>
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 solutions,
cut JW3 jumper.
5. Typical unit-mounted thermostat wiring shown.
6. 24 V Alarm Signal shown. For Dry Alarm Con-
tact, cut AL2DRY (JW4) Jumper and Dry Contact
will be available between AL1 and AL2.
7. Transformer secondary ground via Deluxe D
board standoffs and screws to Control Box.
(Ground available from top two standoffs as
shown.)
AUTOMATIC CHANGEOVER WITH DELUXE D CONTROLLER
AL
—
Alarm Relay Contacts
BM
—
Blower Motor
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
UMT
—
Unit Mounted Thermostat
UPM
—
Unit Performance Monitor
WV
—
Water Valve
LEGEND