Terminating The Vent - Navien NPE-180A Installation Manual

3.6.4 Terminating the Vent

Before installing the water heater, determine what type of vent
termination is appropriate for the installation location and
situation. The subsections that follow describe some typical
venting configurations, but do not include all possible options.
Along with 2 in and 3 in PVC Concentric Terminations shown on
pages 33-34, the following terminations can also be used:
IPEX Low Profile Termination Kits:
2 in Low Profile Vent Kit #196984
3 in Low Profile Vent Kit #196985
Duravent PolyPro Horizontal Concentric Termination Kit
2 in x 4 in Concentric Vent Kit #2PPS-HK
3 in x 5 in Concentric Vent Kit #3PPS-HK
Refer to the vent manufacturer's instructions for detailed
installation procedures.
Indoor Water Heater Installation Venting Examples
The following are some possible indoor venting options:
2 in or 3 in Two-pipe Sidewall Venting
Interior View
12 in (300 mm) min.
Exhaust Gas
Exterior View
Intake Air
Exhaust Gas
Do not vertically
stack terminations on
sidewalls.
Intake Air
Non-concentric Sidewall Venting – Air is drawn from a different
location at a minimum of 12 in (300 mm) from the exhaust
termination. Try to minimize the length of the intake air pipe
with this venting.
Concentric Sidewall Venting
Combustion Air
Vent
CAUTION
Refer to the figures below for the orientation of vent if the
IPEX low profile vent kit is used for the termination.
Combustion Air
Vent
Maintain 12 in
1 in (25 mm) min.
(300 mm) min.*
* Clearance above
highest anticipated
snow level or grade.
Installing the Water Heater 33