Dimensions
s
Connection for combustion
air supply and vent system
r
g
x
c
h
d
boiler connections
Vent system / Combustion air supply
Gas pipe
Supply pipe
Return pipe
Cold water pipe
Hot water pipe
DHW circulation return pipe
Condensate pipe
connection diameters
h
c
r
Boiler type
s
x
g
d
QP85N
QP130N
80/125mm
g
3/4"M-NPT
s
3/4"M-NPT
r
3/4"M-NPT
3/4"M-NPT
c
h
3/4"M-NPT
3/4"M-NPT
x
1" / 25mm
d
s
r
h
8U442600
2
c
x
d
g
figure 5
table 2
15