Rinnai E75CN Installation & Servicing Instructions Manual page 14

Dimensions
boiler connections / mounting points
Vent system / Combustion air supply
Gas pipe
Supply pipe
Return pipe
Condensate pipe
Cold water pipe
Hot water pipe
connection diameters
14
Connection for combustion air supply and vent system
f1 g c
w k r1
f2 r2
Boiler type
g
boiler side - f1
system side - f2
boiler side - r1
system side - r2
c
0.59" x 3/4"M-NPT /
k
0.59" x 3/4"M-NPT /
w
f1 w g k
f2
Combi
E75CN
E75CP
80/125mm 80/125mm
3/4"M-NPT 3/4"M-NPT
22mm
1¼"M-NPT 1¼"M-NPT
22mm
1¼"M-NPT 1¼"M-NPT
0.87" / 22mm 0.87" / 22mm
15mm 3/4"M-NPT
15mm 3/4"M-NPT
c
r1
r2
E110CN
E110CP
22mm
22mm
G1/2"x
G1/2"x
figure 2
table 2