Bosch IDS BOVB20 Installation Instructions Manual page 21

Wiring for 1H and 1C thermostat
Y
R
G
C
O/B
H/DH
THERMOSTAT
Note: Because Y1 and Y2 are
jumped, the indoor fan will only run
in high stage.
Figure 32 Thermostat Wiring Diagram for BOVB20/BVA20 Matched System
Wiring for 2H and 1C thermostat
W/E
Y
R
G
C
O/B
H/DH
THERMOSTAT
Note: Because Y1 and Y2 are
jumped, the indoor fan will only run
in high stage.
Note: W1 and W2 are jumped, so
Electric Heat will only function in
high stage.
Figure 33 Thermostat Wiring Diagram for BOVB20/BVA20 Matched System
Bosch IDS BOVB20 Split System Heat Pump - BTC 761701316 C (02.2022)
Dh B C G R
INDOOR UNIT
Dh C G R
B
INDOOR UNIT
Y1 Y2 W1 W2 C
OUTDOOR UNIT
Y2 W1 W2 C
Y1
OUTDOOR UNIT
Installation Instructions
Y B W
Y B W
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