Carrier 50KQA Product Data page 29

Power Supply
Refer to Data Plate
Use copper
conductors only.
See Note 2
Refer to Disconnect
box for optional
power supply connection
Optional
Cord
Connection
CB
SEE
NOTE 7
YEL
UMT
YEL
4 1
ORG
ORG
5
YEL
2
RED
6 3
GRY
PBS
RED
3
3A
BRN
YEL
DM
YEL ORG
BRN
YEL
RED
TIME CLOCK
CLOSED=UNOCCUPIED
OS
BRN
WHT
GRY
RED WHT
YEL
WV
NLL
GRY
RED
GRY
5 5A
RED
PBS
6
6A
RED
7 7A
GRY
AL — Alarm Relay Contacts
BM — Blower Motor
Cap — Capacitor
— Circuit Breaker
CB
CO — Condensate Overflow
CR — Compressor Relay
DM — Damper Motor
FP1 — Sensor, Water Coil Freeze Protection
— Sensor, Air Coil Freeze Protection
FP2
HP — High-Pressure Switch
LOC — Loss of Charge Pressure Switch
NLL — Night Low Limit Thermostat
OS — Override Switch
— Power Terminal Block
PB
PBS — Push Button Switch
RVS — Reversing Valve Solenoid
Trans — Transformer
UMT — Unit Mounted Thermostat
UPM — Unit Performance Monitor
WV — Water Valve
AUTOMATIC CHANGEOVER WITH DELUXE D CONTROLLER
Ground
Neutral on 265V Systems
RED
L2
L1
L2 (ribbed)
Ground
L1 (plain)
BRN
(265V)
BLK
Trans
RED
(208V)
ORG
WHT
230V
SEE
(115V)
NOTE 3
BLU
C
C
R
COM2
R
P1
Y1 1
Y2 2
W1 3
4
O/W2
5
G
6
R
7
C
8
AL1
SEE
ALARM NOTE 6
JW4
P2 RELAY
AL2
AL2 DRY
R
NSB
C
ESD
OVR
H
A
P3
R
NO1
ACC1
NC1
RELAY
COM
OFF ON
1 UPM: Disable/Enable
NO2
ACC2 2 Unit Stage: 2/1
NC2
3 T'stat: Heat Cool/Heat Pump
RELAY
4 RV on B/RV on O
COM
5 Dehumid/Normal
Not Used
6
R
Boilerless: Enable/Disable
7
8 Boilerless: 40°F/50°F
S1
DIP SWITCH
PACKAGE
LEGEND
----------
H
BLU
CAP
6 8
C
RED RED
CR
F
2 4
BLK BLK
2 B (HIGH)
BRN
BM
RED
YEL
1 A (LOW)
GRY
S
S C
COM1
GRY
D
Microprocessor
Control Logic
STATUS
G
TEST
FAULT R
RV
RELAY
TEST
PINS
JW3 SEE
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
8 Not Used
S2
DIP SWITCH
PACKAGE
NOTES:
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
PB
Compressor
S
Cap
R
C
BLK
RED
Deluxe
D
UMT
FAN ENABLE
RELAY
COM
PUSH BUTTON SWITCH ATTRIBUTES
NO
X = CLOSED
TERMINALS 1
1A 1B 2A 3A 4A 5A 6A 7A 8A
FAN
SPEED
STOP X
COM
RELAY
FAN ONLY X
LOW FAN X
HIGH FAN X
NO NC
1 RED
HP
HP
RED
2
3 BLU
LOC
LOC
BRN
4
5 GRY
FP1
FP1
6 GRY
Y
VIO
7
FP2
FP2
VIO
8
9 BRN
RV
RVS
ORG
Not Used
CO
P7
BLOWER MOTOR WIRING
UNIT SIZE
24V
007
DC
009
EH1
012
015
EH2
019
P6
CCG
BRN
1
COMPR
CR
RELAY
CC
YEL
0
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.)
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
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
29