Navien NPE-180A2 Installation Manual page 45

Purpose
The VID's purpose is to guide the installer to fully
insert the vent pipe to a depth of at least 2-
(70 mm), into the collar. If the vent pipe is not
properly inserted and installed, it could separate
from the collar resulting in flue gas spillage and
carbon monoxide emissions which will result in
severe personal injury or death.
WARNING
Periodically inspect all vent pipe connections.
The Vent Installation Detector (VID) will NOT
detect the separation of connected vent pipe if
the joints become detached or are leaking flue
gas that may contain carbon monoxide.
The VID is not intended and should not be
relied upon to detect all instances of vent pipe
movement or separation from the collar.
Various factors, including but not limited to
sensor failure, switch sticking and corrosion,
may cause the VID to not properly function if
the vent pipe separates from the collar.
Limitations
The VID is not an alarm, safety switch or a substitute
for a carbon monoxide detector. The VID may not
cause the unit to stop operating if the vent pipe
is partially or completely dislodged. Other factors
can impact the performance of the VID causing
it to be unable to function as intended. Such
factors include, but are not limited to, deformity
of the vent pipe, not using a correctly sized vent
pipe, misalignment of the vent pipe into the collar,
vertical movement of the vent pipe caused by
improper installation, and other misuse or non-
conformance with installation instructions.
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3
Carbon Monoxide Hazard
4
To prevent serious injury or death:
ALWAYS insert vent pipe 2-
●
the water heater exhaust collar.
If the vent pipe is not fully inserted, the vent
●
installation detector switch may not detect
its presence and the water heater may not
operate.
ALWAYS only use the correctly sized vent pipe
●
materials or an error code E762 can appear on
the front panel if the vent pipe is not properly
installed.
The factors that can effect the performance
●
of the VID include, but are not limited to,
deformity of the vent pipe, not using a
correctly sized vent pipe, misalignment of the
vent pipe into the collar, vertical movement of
the vent pipe caused by improper installation,
and other misuse or non-conformance with
installation instructions.
WARNING
/
3
Installing the Water Heater
" (70 mm) into
4
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