Vent And Combustion Air Pipe Length For Cascade System - Riello Condexa PRO NA 75P Installation, Operation And Service Manual

Both common air intake and exhaust system (sealed com-
bustion)
L1
Common exhaust with individual air inlet (sealed combus-
tion)
L1
Total length = L1+L2+L3
L3
Total length = L1+L2+L3
(where L3 is different for
each boiler of the cascade)
L3
2.13.9 Vent and combustion air pipe length for
cascade system
In the following tables are the maximum allowed length for flue
pipe cascade system. The length is for each intake and exhaust
system.
In a system as shown in Fig. "Both common air intake and ex-
haust system (sealed combustion)" it is necessary to verify the
max. length for intake pipe of each boiler installed.
Maximum length for air and combustion pipe for cascade of
Condexa PRO NA 75 P
Condexa PRO NA
75 P
x2
x3
x4
x5
x6
Maximum length for air and combustion pipe for cascade of
Condexa PRO NA 117 P
Condexa PRO NA
117 P
x2
x3
x4
x5
x6
37
INSTALLATION
6" (150 mm) 8" (200 mm)
100 ft (30 m) 100 ft (30 m)
100 ft (30 m) 100 ft (30 m)
100 ft (30 m) 100 ft (30 m)
100 ft (30 m) 100 ft (30 m)
100 ft (30 m) 100 ft (30 m)
8" (200 mm)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)
100 ft (30 m)