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3 Dimensional Data
3.1 Unit Dimensions
Low voltage
connection
Breaker switch
(for electric heater only)
Front return shown. Units may
also be installed as bottom
return. See the applications
section for more detail.
Primary drain conncetion 3/4"
female pipe thread (NPT)
Auxiliary drain connection 3/4"
female pipe thread (NPT)
NOTE:Hand tighten only
Figure 2
Unit dimensions
Model Size
Unit Height "H"
18
36-1/2 (928)
24
36-1/2 (928)
30
39-1/2 (1004)
36
39-1/2 (1004)
Table 1
Bosch BWA Series Air Handler - BTC 761703105 A (03.2023)
All units are configured for vertical upflow.
Units cannot be installed in any other configuration.
Dimensions Inch [mm]
Unit Width "W"
Unit Length "D"
20-1/2 (521)
15 (381)
20-1/2 (521)
15 (381)
22 (559)
19 (483)
22 (559)
19 (483)
Liquid line connection
copper (sweat)(3/8"dia pipe)
Vapor line connection
copper (sweat)(3/4"dia pipe)
High voltage connection
7/8" dia knock outs
Supply Duct Width "W1"
Supply Duct Length "D1"
17-2/5 (442)
9-1/2 (242)
17-2/5 (442)
9-1/2 (242)
18-4/5 (478)
9-1/2 (242)
18-4/5 (478)
9-1/2 (242)
Installation Instructions
Liquid Line/ Vapor Line
3/8 / 3/4 (9.5) / (19)
3/8 / 3/4 (9.5) / (19)
3/8 / 3/4 (9.5) / (19)
3/8 / 3/4 (9.5) / (19)
| 7
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