Connecting The Pipe To The Vent Collar - Navien NPE-180A2 Installation Manual

The water heater must be properly vented to ensure
a constant supply of clean intake air and to ensure
that exhaust air is properly removed from living
areas. When venting the water heater, follow these
guidelines:
For best results, keep the venting system as short
●
and straight as possible.
Locate the water heater as close as possible to the
●
vent termination.
Do not connect the water heater vent to a vent
●
for any other gas water heater or vent stack.
For horizontal runs, slope the horizontal section
●
upward toward the vent termination at a rate of
/ in per foot (2% slope).
1
4
Create an airtight seal at each joint in the exhaust
●
and intake air pipes from the water heater collar
to the vent termination.
Do not cover any non-metallic vent
Note
materials with thermal insulation.

Connecting the Pipe to the Vent Collar

Do not use primer or cement on the
Note
appliance connection.
WARNING
When cutting the vent pipe, ensure that the
cutting plane of the pipe is at a 90° angle with
the pipe axis and is as flat as possible. Vent pipes
with a beveled cutting plane can lead to gasket
failure and flue gas leakage, which may result in
serious injury or death.
90°
42 Installing the Water Heater
9 0 C
1. Measure 3.0" inches from the end of the vent
pipe, then draw a mark at that distance.
Mark 3.0" from
the end of the pipe
2. Insert the pipe into the vent collar to start the
vent run. Make sure to completely slide the vent
into the collar until the end makes contact with
the bottom of the socket.
Verify that 3.0" of the pipe has been
Note
completely inserted into the collar and
that the mark is no longer visible.
3. Tighten the clamp with a socket wrench (8 mm)
to properly seal the joint.
3.0"