Bosch SSB255 Installation And Service Manual page 7

15 7/32" (386mm)
16 19/32" (422mm)
18" (457mm)
16 17/32" (420mm)
21 21/32" (550mm)
Fig. 3 SSB399 (dimension in inches [mm])
A System supply - 1" 1/2 NPT
B System return - 1" 1/2 NPT
C Gas inlet - 1" NPT
SSB
F
G
23 31/32" (609mm)
21 5/8" (549mm)
10 1/16" (256mm)
2 3/32" (53mm)
B
D
D Flue exhaust - 4" (110mm)
E Intake air - 4" (110mm)
Product description | 7
5 1/2" (140mm)
A
E
C
6720818454 (2016/02) US