Access To Utilities; Adequate Venting And Ventilation; Adequate Drainage; Proximity To Fixtures And Appliances - Navien NPE-180A2 Installation Manual

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.

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 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 37.
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 requires minimal venting.
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 41.
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.
Maintain a minimum clearance of 4 ft (1.2 m) from
●
heating and cooling vents.
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.

Proximity to Fixtures and Appliances

Install the water heater near fixtures that deliver
or use hot water, such as bathroom, kitchen,
and laundry room faucets. Select a location that
minimizes the water piping required between major
fixtures. If the distances are long or if the water
heater requires "instant" hot water, we recommend
running a recirculation line back to the water heater
from the furthest fixture. Insulate as much of the hot
water supply and recirculation lines as possible. For
more information about the water supply, refer to
"3.4 Connecting the Water Supply" on page 24.