Mounting The Water Heater To The Wall - Navien NPE Installation & Operation Manual

Clean, Debris and Chemical-Free Combustion Air
Do not install the water heater in areas where dust and debris
may accumulate or where hair sprays, spray detergents, chlorine,
or similar chemicals are used.
Do not install the water heater in areas where gasoline or other
flammables are used or stored.
Ensure that combustible materials are stored away from the
water heater and that hanging laundry or similar items do not
obstruct access to the water heater or its venting.
The combustion air must be free of flammable
Note
vapors or corrosive chemical fumes. Common
corrosive chemical fumes to avoid include
fluorocarbons and other halogenated
compounds such as Freon, trichloroethylene,
perchloroethylene, chlorine, all of which can be
found in refrigerants or solvents. When these
chemicals burn, they produce acids that corrode
the stainless steel heat exchanger, gaskets, and
the flue and vent system.
In commercial locations, do not install the water heater in areas
with greasy fumes or heavy amounts of steam or take measures
to prevent fumes and steam from entering the water heater.
High Elevation Installations
This water heater may be installed at elevations up to 10,100 ft
(3,078 m) for use with Natural Gas and 4,500 ft (1,370 m) for
use with Propane. Refer to "3.8.2 Setting the Front Panel DIP
Switches" on page 44 for the appropriate altitude setting.
Coastal Installations
For installations in sea or marine environments, the salty air can
cause corrosion to the water heater. The water should be protected
and enclosed to minimize exposure to the corrosive atmosphere.
Damage due to a corrosive environment is not covered under
warranty.
Operating Temperature
The ambient temperature at the installation location must be
above freezing temperature and below 100˚F (38˚C).

3.2 Mounting the Water Heater to the Wall

Navien water heaters come with an upper mounting bracket that
is pre-drilled at 16 in on center for easy installation on standard
wall studs. If the strength of the wall is insufficient or if the framing
is non-standard or uneven, reinforce the area before installing the
water heater. Avoid installation on common walls as the unit will
make some operational noises while it is running.
WARNING
The water heater is heavy. Always lift the unit with
assistance. Be careful not to drop the water heater while
lifting or handling it to avoid bodily injury or damage to the
unit.
Do not rest the water heater on the bottom end after
removing it from the shipping carton. Doing so may result in
excessive pressure on protruding pipes and cause product
damage. If you must put the water heater down, lay it on its
back or put it inside the protective shipping base.
Install the water heater in the upright, vertical position.
Installation in any other orientation will result in improper
water heater operation and property damage, and could
result in serious personal injury or death.
CAUTION
Ensure that the structure of the installation location is sturdy
enough to support the full weight of the installed boiler,
including the water contained in the heat exchanger and
related piping.
The wall must be vertical, and it must be capable of carrying
the weight of the water heater.
Do not mount the water heater to dry wall that has not been
reinforced.
Installing the Water Heater 17