Carrier FV4ANB - Page 26

Fig. 18—FK4B Wiring Diagram
A94078
LS
ICM
TRAN
GND
FU
RECP
CB
F

SEE RATING PLATE
FOR VOLTS & HERTZ
(SEE NOTE 1)
FIELD POWER WIRING
YEL
GND
30KW 1PH SCHEMATIC DIAGRAM
DISCONNECT PER NEC
THIS COMPARTMENT MUST BE CLOSED EXCEPT FOR SERVICING
NOT SUITABLE FOR USE ON SYSTEMS
EXCEEDING 150V TO GROUND
CAUTION:
ATTENTION:
NE CONVIENT PAS AUX INSTALLATIONS
DE PLUS DE 150 V A LA TERRE
BLOWER MOTOR
ROTATION
HVTB
SEQ 3
CB/FU4
FU6
YEL
YEL
YEL
L1
12 11
BLK
BLK
FU5
8
7
CB/FU2
CB/FU1
YEL
YEL
43
BLK
BLK
10 9
BLKBLK
SEQ 2
65
YEL
21
BLK
CB/FU3
L2
HTR6
HTR5
HTR4
HTR3
HTR2
HTR1
LS6
LS5
LS4
LS3
LS2
LS1
BLK
SEQ 1
YEL
YEL

BLK
BLK
BLK
BLK



BLK
BLK
BLK
BLU
BLK
YEL
BLU
PLUG 1
RED
GRY
BRN
BRN
SEQ1
SEQ2
SEQ3
ORN
VIO
123456789101112
24567
FIELD POWER WIRING
DISCONNECT PER NEC
SCHEMATIC DIAGRAM
SEE RATING PLATE
FOR VOLTS & HERTZ
(SEE NOTE 1)
YEL BLK
9
7
GND
COOLING CONTROL WIRING
COOLING CONTROL ONLY
AUX HEAT RANGE
AC/HP SIZE
TYPE
A–C HP–COMFORT HP–EFF
AC/HP CFM TRIM
AC/HP DELAY ON/OFF
0/30 30/30 30/30 0/0
7
RECP 2
1
TRAN
COMMON
BRN
RED
BLK
RED
GRY
BLK
ORN
BLU
VIO
1
2
3
4
5
6
7
8
9
10
11
12
RECP 1
RED
BLU
RED
M1
M2
T1
SEC2
SEC1
T2
T3
PCB
PLUG
24VAC
LVTB
JW2
JW1
L
R
C
O
G
E
W
2
W
3
GRN/YEL
YEL
BLK
54321
PLUG 3
PLUG 4
YEL
RECP 3
RECP 4
ICM
BRN
YEL
RED
VIO
RED
ORN
BRN
VIO
ORN
GRY
BLU
BLK
BLK
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
PLUG 2
BLK
YEL ORN GRN
RED BRN VIO
(SEE NOTE 3)
(SEE NOTE 2)
HPTB
E
Y
1
Y
0
W
2
O
L
R
NOTES:
1. Use copper wire only between disconnect switch and unit.
2. Connect (Y) to (Y), (C) to (C), etc. in pattern shown.
3. Transformer primary leads: BLUE 208V, RED 230V.
4. To be wired in accordandce with NEC and local codes.
5. If any of the original wire, as supplied, must be replaced, use the same or
 equivalent type wire. 
6. Replace low voltage fuse with no greater than 5 amp fuse. 
7. Fuse is wired in series between transformer SEC2 and low voltage "R" circuit. 
8. 20KW heater uses one double pole LS on middle top element.
9. 18, 24 and 30KW heaters use double pole limit switches.
10. Largest heaters are shown, smaller heaters will have fewer elements and
components.
11. 1 phase heaters are shown wired for single supply circuit. Multiple
supply circuits may be wired directly to fuse/C.B.'S.
- LEGEND -
MARKED TERMINAL
UNMARKED TERMINAL
FIELD POWER WIRING
PLUG AND RECEPTACLE
PCB BREAKOFF JUMPER
AUXILIARY
PRINTED CIRCUIT BOARD
HEAT PUMP TERM BRD
LOW VOLT TERM BRD
SEQUENCER
HEATER
HIGH VOLTAGE TERMINAL BOX
HUMIDIFIER

AUX
PCB
HPTB
LVTB
SEQ
HTR
HVTB
HUM

320486 - 301 REV. C
LIMIT SWITCH
FAN MOTOR
TRANSFORMER
EQUIPMENT GROUND
FUSE
RECEPTACLE
CIRCUIT BREAKER
LOW VOLTAGE FUSE


BLU
EY
1
Y
0
W
2
OLRY
Y
INDOOR THERMOSTAT
13
F
LO
MED HI
Y1
AUX1 HUM1
AUX2 HUM2
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