Fig. 40—Smart Heat Typical Wiring Diagram
(Motor Speed at 20kw Shown)
A94132
F
COM
MED
LO LO
070060
MED
LOLO
033 038 048042036030
LO LO
CAP
COMM
F
FW
GND
HPLV
HTR
LS
CAPACITOR
COMMON
LOW VOLT FUSE
FAN MOTOR
EQUIPMENT GROUND
HEAT PUMP LOW VOLT
HEATER
LIMIT SWITCH
LED
LVTB
SEQ
TRAN
XFORM
DIAGNOSTIC LIGHT
LOW VOLT TERM BRD
SEQUENCER
TRANSFORMER
PCB TRAN TERMINALS
FIELD LOW VOLTAGE
HPLV LEADS
MARKED TERMINAL
PCB JUMPER (JW)
UNMARKED TERMINAL
YEL
F
322251-101
REV. B
SEE NOTE #3
230V
208V
FU1
L2
FU1
L1
BLK
3
910
SEQ3
FU3
L3
BLK
ORG
SEQ1
YEL
FU4
L4
BLK
SEQ 2
YEL
BLK
5
LS1
6
BLK
HTR1
4
2
1
HTR4
L3
L1
L2
L4
FU3 60A
FU1 60A
FU2 60A
FU4 60A
W3
LED
F2
PCB
HEAT PUMP HEAT
ONLY OPERATING
JW1
JW2
LEADS
JW1
NO POWER OR
BOARD FAILURE
BOARD FAILURE
STAND BY CONDITION
OR FAN ONLY
HEAT PUMP PLUS
1 SEQUENCER
HEAT PUMP PLUS
2 SEQUENCERS
HEAT PUMP PLUS
3 SEQUENCERS
COOL MODE
DEFROST MODE
EMERGENCY HEAT
MODE
7 FLASHES
6 FLASHES
5 FLASHES
4 FLASHES
3 FLASHES
2 FLASHES
1 FLASH
STEADY FLASH
STEADY LIGHT
NO LIGHT OR FLASH
LED FLASH CODES
Y
F1
LO
HI
T1
T2
T3
987
654
321
Yo
W2T
W2D
O
G
C
R
AUX +
AUX -
SEC 2
SEC 1
PCB
SEC 2
SEC 1
BLK
RED-LO
DUMMY
240 VAC
T3
T2
T1
XFORM
DUMMY
LO
HI
VAC
240
F2
COMM
FAN
F1
R
C
Y
O
W2
HPLV
LS3/4
INDOOR THERMOSTAT
E
W2
OG
YCR
LVTB
Yo
W3
W2T
W2D
O
G
Y
C
R
YEL
BLK
VIO
BRN
789
654
1
2
3
YEL
YEL
YEL
SEQ 3
HTR3
3
SEQ1
8
7
4
SEQ2
6
5
SEE NOTE #1
SEE NOTES #2, #7,AND #8
YEL-COM
CAP
BRN
FM
BRN
GRN/YEL-GND
BLK-HI
BLU-MED
BRN
RED
TRAN
MOTOR SPEED AT 20 KW
FAN COIL SIZE
MINIMUM MOTOR LO SPEED TAP SELECTION
NOTES:
LS2
LS1
RED
SEQ3
SEQ2
SEQ 2
9
10
BLK
7
LS2
YEL
8
BLK
HTR2
SEQ 1
3
LS3
4
BLK
BLK
LS4
BLK
HTR4
FOR VOLTS & HERTZ
SEE RATING PLATE
DISCONNECT PER NEC
FIELD POWER WIRING
SCHEMATIC DIAGRAM
GND
CAP
FAN MOTOR THERMALLY PROTECTED
YEL-COM
BRN
BRN
FM
GRN/YEL-GND
BLK-HI
BLU-MED
RED-LOW
GND
1. USE COPPER WIRE (75°C MIN) ONLY BETWEEN
DISCONNECT SWITCH AND UNIT.
2. CONNECT LOW VOLTAGE WIRING AS SHOWN (24VAC).
3. CONNECT TRANSFORMER PRIMARY TO THE PROPER
VOLTAGE TERMINAL
4. TO BE WIRED IN ACCORDANCE 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. REFER TO THERMOSTAT INSTRUCTIONS FOR "E" JUMPER
INSTALLATION.
8. DO NOT
CONNECT THERMOSTAT "E" TO PCB "W3".
LEGEND
REMAINING VA AVAILABLE: 13.7VA
FAN COIL/HEATER: 26.3VA
SYSTEM TRANSFORMER: 40.0VA
BRN
24 V
RED
TRAN
230 V
208 V
COM
HTR2HTR3
HTR1
COMPONENT ARRANGEMENT
ROTATION
BLOWER MOTOR
NE CONVIENT PAS AUX INSTALLATIONS DE PLUS DE 150
V A LA TERRE
NOT SUITABLE FOR USE ON SYSTEMS EXCEEDING
150V TO GROUND
ATTENTION:
CAUTION:
THIS COMPARTMENT MUST BE CLOSED EXCEPT FOR SERVICING
Copyright 1999 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 f5sm
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3d 2e
PC 101 Catalog No. 03FA-4A3 Printed in U.S.A. Form F-5SM Pg 52 6-99 Replaces: F-4SM
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