Bosch SM SERIES - Wiring Diagrams

Wiring Diagrams | 29SM Split AH/AV Air Handler
8733826256 (2020/06)SM Split AH/AV Air Handler
Subject to change without prior notice
WIRING DIAGRAMS
Fig. 15 SM — Wiring Diagram (without Electric Heat)
THERMOSTAT
R C G O Y1 Y2 W1 W2 H C
CFM ADJUST
TO ECM MOTOR
A
B
C
D
NORM
(+) (-)
TEST
HGRH
NO
CFM
YES
H
MAKE SURE BOTH ARE OFF BEFORE SERVICING.
CAUTION: UNIT CONTAINS TWO POWER SUPPLIES -
L1 L2
TB2
POWER TERMINAL BLOCK PROVIDED
DENOTES FIELD TERMINATED COMPONENTS DENOTES OPTIONAL WIRING DENOTES OPTIONAL WIRING
4
2
3
1
FOR REFERENCE ONLY Actual unit wiring
may vary from this example. Always refer to
the wiring diagram attached to the unit.