Navien NPE-180A2 Installation Manual page 43

Connecting the Pipe to the Vent Collar
Do not use primer or cement on the
Note
appliance connection.
WARNING
ALWAYS properly cut the pipe at a 90° angle and
deburr the vent pipe before installing so the
pipe is fully connected to the exhaust gas vent
fitting.
Use water (NOT grease) to lubricate the end of
the vent pipe before inserting into the collar.
ALWAYS insert the vent pipe 2-
the appliance exhaust collar using a twisting
motion until the end reaches the bottom of the
socket.
If flue gas leaks, inhalation of carbon monoxide
may result in serious injury or death.
90°
/ " (70 mm) into
3
4
9 0
1. Measure 2- / " (70 mm) from the end of the vent
3
4
pipe, then draw a mark at that distance.
Mark 2- 3 / " (70 mm)
4
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 2-
Note
has been 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.
2- / "
3 (70 mm)
4
/ " (70 mm) of the pipe
3
4
Installing the Water Heater 43