Navien NFC-250/175H, Руководство по установке, Страница: 64 / 151

64 Venting for Combustion Air
3.0”
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.
Note
Verify that 3.0” of the pipe 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.
Connecting the Pipe to the Vent Collar
Note
Do not use primer or cement on the
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 C
90°
1. Measure 3.0” inches from the end of the vent
pipe, then draw a mark at that distance.