69
Venting for Combustion Air
Two-Pipe Snorkel Sidewall Venting
12”
(300 mm) min.
12”
(300 mm) min.*
Exhaust Gas
Intake Air
* Clearance above highest anticipated snow level or
grade, or as required by local codes, whichever is
greater.
●
Non-Concentric Sidewall Venting - Air is drawn
from a different location that is at least 12 in (300
mm) away from the exhaust termination. The
exhaust termination can be located either on the
sidewall or roof. Try to minimize the length of the
intake air pipe when installing the vent.
12" (300mm) min.*
* 12” (300mm) above the highest anticipated snow
level, or as required by local codes, whichever is
greater
Indoor Boiler Installation Venting
Examples
The following are some possible indoor venting
options:
●
Two-Pipe Sidewall Venting
12" (300 mm) min.
12" (3
00 mm
) min.
Exhaust Gas
Exhaust Gas
Interior View
Exterior View
Intake Air
Intake Air
Summary of Contents for NCB-190/060H
Page 141: ...141 Appendixes 12 6 4 Fan Gas Assembly 10 9 12 8 7 3 1 2 4 5 6 13 11 11 14 15...
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