Navien NPE-180A2 Installation Manual page 16

Access to Utilities
Water – the installation location should be near
●
where the domestic water supply enters the
building.
Gas – the installation location should be near
●
where the gas supply enters the building.
Electricity – the installation location should
●
be near where the electrical supply enters the
building.
Humidity and Contact with Water
When installing the water heater, avoid places with
excessive humidity. The water heater has electric
gas ignition components. Moisture can get inside
the water heater and damage the ignition system.
The water heater must be installed in a way to
ensure that the gas ignition system components are
protected from water (dripping, spraying, rain, etc.)
during operation and service.
Adequate Drainage
The water heater produces a significant amount
of condensate during operation. The water heater
should be located near a suitable drain and where
damage from a possible leak will be minimal.
Installing the water heater in a location
Note
without a drain will void the warranty
and Navien will not be responsible for
water damages that occur as a result.
For more information about condensate drainage,
refer to "3.5 Connecting the Condensate Drain" on
page 38.
The water heater must be located in an area where
leakage of the unit or connections will not result in
damage to the area adjacent to the appliance or to
lower floors of the structure. When such locations
cannot be found, installation of an adequately
drained drain pan under the water heater is
highly recommended. When installing the drain
pan, ensure that the installation does not restrict
combustion air flow.
16 Installing the Water Heater
Adequate Venting and Ventilation
Select a location that minimizes the length of the
intake and exhaust vent piping. Consider venting
restrictions caused by windows, doors, air intakes,
gas meters, foliage, and other buildings. For more
information about venting, refer to "3.6.1 Venting
the Water Heater" on page 42.
To ensure adequate venting and ventilation, follow
these guidelines:
Maintain proper clearances from any openings in
●
the building.
Install the water heater with a minimum clearance
●
of 12 in. (300 mm) above an exterior grade or as
required by local codes.
Do not enclose the vent termination.
●
Install the exhaust vent in an area that is free from
●
obstructions and does not allow the exhaust to
accumulate.
Do not install the water heater where moisture
●
from the exhaust may discolor or damage walls.
Do not install the water heater in bathrooms,
●
bedrooms, or any other occupied rooms that are
normally kept closed or that are not adequately
ventilated.