Bryant SM03-4 Service Manual page 51

THIS COMPARTMENT MUST BE CLOSED EXCEPT FOR SERVICING
SCHEMATIC DIAGRAM
FIELD POWER WIRING
SEE RATING PLATE
FOR VOLTS & HERTZ
L1 L3
LS4
HTR4
YEL
3
1
LS3 HTR3
YEL
2 4
HTR2
LS2
YEL
HTR1
LS1
YEL
YEL
XFORM
T1
F1
COMM
HI
DUMMY
FAN
T2
240
DUMMY VAC
240 VAC
LO
T3
F2
FM
BRN
RED
BLU-MED
BRN TRAN
BLK-HI
SEE NOTE #3
YEL-COM
BRN
GRN/YEL-GND
NOTES:
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".
MINIMUM MOTOR LO SPEED TAP SELECTION
030 033 036
FAN COIL SIZE
MOTOR SPEED AT 20 KW LO
MED MED
Fig. 40—Smart Heat Typical Wiring Diagram (Motor Speed at 20kw Shown)
BLOWER MOTOR
ROTATION
DISCONNECT PER NEC
L4 L2
SEE NOTE #1
SEQ 3
BLK
BLK
9
10
SEQ 1
BLK
BLK
3 4
SEQ 2
BLK
7 8
BLK
SEQ 2
BLK
BLK
5 6
ORG
VIO
PCB
3
2 1
RED
6 5 4
9 8 7
F
YEL
JW1
R C Y G O E W2
INDOOR THERMOSTAT
SEE NOTES #2, #7,AND #8
LEGEND
CAP CAPACITOR
COMM COMMON
F LOW VOLT FUSE
FW FAN MOTOR
GND EQUIPMENT GROUND
HPLV HEAT PUMP LOW VOLT
HEATER
HTR
LIMIT SWITCH
LS
038 042 048 060 070 322251-101
LO LO LO LO LO REV. B
—51—
NOT SUITABLE FOR USE ON SYSTEMS EXCEEDING
150V TO GROUND
NE CONVIENT PAS AUX INSTALLATIONS DE PLUS DE 150
V A LA TERRE
COMPONENT ARRANGEMENT
HTR1
LS1
SYSTEM TRANSFORMER: 40.0VA
FAN COIL/HEATER: 26.3VA
REMAINING VA AVAILABLE: 13.7VA
PCB
SEQ3
R
SEC 1
F
C
Y
SEC 2
G
LED
O
SEQ2
W2D
W2T
3 2 1
W3
6 5 4
Yo
9 8 7
AUX -
AUX +
T1
SEQ1
T2
F1 HI
T3
BRN
F2 LO
GND
RED-LOW
HPLV
BLU-MED
LEADS
BLK-HI
GND
Y
GRN/YEL-GND
W2
FAN MOTOR THERMALLY PROTECTED
O
R
NO LIGHT OR FLASH
C
STEADY LIGHT
STEADY FLASH
1 FLASH
DIAGNOSTIC LIGHT
LED
2 FLASHES
LOW VOLT TERM BRD
LVTB
SEQUENCER
SEQ
3 FLASHES
TRANSFORMER
TRAN
4 FLASHES
PCB TRAN TERMINALS
XFORM
FIELD LOW VOLTAGE
5 FLASHES
HPLV LEADS
MARKED TERMINAL
6 FLASHES
PCB JUMPER (JW)
7 FLASHES
UNMARKED TERMINAL
CAUTION:
ATTENTION:
HTR3 HTR2
LS2
LS3/4
COM
RED
24 V
208 V
BRN
230 V
SEQ3
9 10
8
7
FU4 60A
L4
5 6
L2 FU2 60A
SEQ2
L1 FU1 60A
4
3
L3 FU3 60A
SEQ1
BRN
FM
CAP
BRN
YEL-COM
LED FLASH CODES
NO POWER OR
BOARD FAILURE
BOARD FAILURE
STAND BY CONDITION
OR FAN ONLY
HEAT PUMP HEAT
ONLY OPERATING
HEAT PUMP PLUS
1 SEQUENCER
HEAT PUMP PLUS
2 SEQUENCERS
HEAT PUMP PLUS
3 SEQUENCERS
COOL MODE
DEFROST MODE
EMERGENCY HEAT
MODE
A94132