Bryant SM03-4 Service Manual page 43

SEE NOTE #4
L 2
1
FIELD POWER SUPPLY
L 1
2
SEQ 1
BLK
3
SEQ
BLK
2 3
TB BLK
3
BLK
FR
TB
2 BLK 1
BLK
2
SEQ BLK
3 3
TRANS
RED
NOTE #1
FR 3
RED
I T
R RED
N H
D E
O R
VIO
W2
O M
R O
S
T
A
G
ORN
T
BRN
C
COMPONENT ARRANGEMENT
RED BRN
IFM
YEL
FC
BLK GRN
(OPTIONAL)
FL-2
HTR-2
LS 2
2 S 4 6
E
1 3 5
BLK
Q
BLK VIO
- LEGEND -
FIELD POWER WIRING
FIELD GROUND WIRING
FIELD CONTROL WIRING
FIELD SPLICE
JUNCTION
MARKED CONNECTION
UNMARKED CONNECTION
FC FAN CAPACITOR
FR FAN RELAY
HTR HEATER
IFM INDOOR FAN MOTOR
LS LIMIT SWITCH
QT QUAD TERMINAL
SEQ SEQUENCER
TB TERMINAL BLOCK
TRANS TRANSFORMER
Fig. 35—FD3A Typical Wiring Diagram
SCHEMATIC DIAGRAM
YEL
1
T
YEL
B
2
(OPTIONAL) HTR-2
LS-2
FL-2
4
BLK
SEQ
(OPTIONAL) HTR-1
SEQ
LS-1
FL-1
2 BLK
NOTE #2
RED
LO
IFM
FR
BLK
1
HI
BLU
TRANS
BRN BRN
24V
SEQ
VIO
6
FR
ORN
BRN
BLK
YEL
EQUIP. GND.
YEL
YEL
BRN RED
LS 1
TRANS
BLU
HTR-1
FL-1
BRN BLK
(OPTIONAL)
BRN RED
2
FR
3 1
NOTES:
1. TRANSFORMER PIGTAILS:
(OPTIONAL)
FL FUSIBLE LINK
2. FAN MOTOR PIGTAILS: RED LOW;
WIRE SLEEVE
3. FAN MOTOR THERMALLY
4. SUITABLE FOR USE WITH COPPER
40DQ500784
—43—
LS-1
YEL
YEL LS-2
1 TB
YEL
FC QT
VIO
YEL 1 TB
FC
QT
BRN VIO LS-2
BLK TRANS
YEL
BLK FC QT
GRN
BRN 5 SEQ
BRN BRN TRANS
5
FR
BRN
SEQ
BRN 5
SEE NOTE #4
2 2
T
FIELD POWER WIRING
B
1 1
DISCONNECT
PER
N.E.C.
I
N
D
RED R
O
FIELD O
ORN
G
R
CONTROL
BRN C
WIRING
VIO
W2
BLUE 208V; RED 230V; INSULATE
UNUSED LEAD.
BLACK HIGH, INSULATE UNUSED
LEAD.
PROTECTED.
OR COPPER CLAD ALUMINUM
CONDUCTORS RATED FOR 75°C
MINIMUM. FOR COPPER USE 6
AWG. FOR COPPER CLAD
ALUMINUM USE 4 AWG.
REV. C
T
H
E
R
M
O
S
T
A
T
A94376