Installation Instructions
Bosch IDS BVA 2.0
| 25
Bosch Thermotechnology Corp. | 02.2019
Data subject to change
Figure 22
Wiring for 2H and 1C thermostat
Y2
C
Y
C
G
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
G
R
O/B
H/DH
W2
W1
C
Y
B
W
B
Dh
Y1
R
GRAY
PURPLE
BROWN
BLUE
GREEN
RED
YELLOW
BROWN
YELLOW
BLUE
W/E
WHITE/BLACK
WHITE
WHITE
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.
Control Wiring For HP Systems
Electric wiring gauge for H/P systems
Model(Btu/h)
24
36
48
60
Power
Phase
Single
Voltage/frequency
208/230VAC, 60Hz
Line
Gauge
Input Current Fuse
Indoor unit (A)
15A
15A
15A
15A
Indoor Unit Power
Line
Line Quantity
3
3
3
3
Line Diameter (AWG)
14
14
14
14
Outdoor Unit Power
Line
Line Quantity
3
3
3
3
Line Diameter (AWG)
14
12
10
10
Outdoor -Indoor
Signal Line
Line Quantity
4
4
4
4
Line Diameter (AWG)
18
18
18
18
Thermostat Signal
Line
Line Quantity
5
5
5
5
Line Diameter (AWG)
18
18
18
18
Table 9