Navien NHB H Series, Инструкция по установке и эксплуатации

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65 Venting for Combustion Air
●
Concentric Sidewall Venting
Combustion Air intake
Combustion
Air intake
Maintain 12" (300 mm) min. clearance above highest
anticipated snow level or grade, whichever is greater.
Exhaust
Gas
Exhaust
Gas
●
Concentric Vertical Venting
Combustion
Air intake
Maintain 12” (300 mm) min.
clearance above highest
anticipated snow level or
grade, whichever is greater
(maximum of 24” above
roof).
Exhaust Gas
Note
For cascade applications, the required
horizontal clearance between
terminations is 12” for both sidewall and
vertical venting installations.
CAUTION
Do not vertically stack concentric
terminations on sidewalls. The
circulation of exhaust gases will
cause improper operation of the
boiler.
●
Multiple Low-Profile Terminations on Sidewall
(Cascade Only)
12” (300 mm) min.
●
Multiple Low-Profile Terminations on Roof
(Cascade Only)
12” (300 mm) min.
Combustion
Air intake
Exhaust
Gas
●
Two-pipe Vertical Venting - Intake and exhaust
pipes do not have to terminate in the same area.
12" (300 mm) min.
12" (300 mm) min.
36" (900 mm) min.
Exhaust Gas
12” (300 mm) min
From any
obstruction
(above, below,
left, or right)
Intake Air
●
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" (300 mm) min.
* 12” (300 mm) above the highest anticipated snow
level, or as required by local codes, whichever is
greater