Appendix B: Primary/Secondary Piping For Greenstar Wall Boiler - Bosch FS 100 Manual

6 8 | Bosch Greenstar

Appendix B: Primary/Secondary piping for Greenstar Wall Boiler

Piping Section
A
B
C
Boiler Input
(btu/hr)
57,000
79,000
100,000
131,000
151,000
Data subject to change
Gas
Supply
Description
System Supply
Closely Spaced Tees
System Return
Boiler Supply/Return pipe diameter
1"
1"
1"
1"
1"
Boiler Supply
System Supply
A
B
System Header Pipe
Requirements
Minimum length of 4 x pipe diameter based
on System header pipe size
Maximum distance of 4 x pipe diameter
(center-to-center) based on System header
pipe size
Minimum length of 8 x pipe diameter based
on System header pipe
System Supply/Return Header pipe diameter*
system T of 20°
1"
1"
1.25"
1.25"
1.5"
*based on 2 – 4 ft/sec flow velocity.
Applications Manual
Boiler Return
System Return
C
system T of 10°
1.25"
1.25"
1.5"
1.5"
2.0"
Bosch Thermotechnology Corp.