14 Installing the Boiler
2.2 Mounting the Boiler to the
Wall
Navien NHB-H boilers come with an upper
mounting bracket that is pre-drilled at 16 in
(400 mm) 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 boiler. Avoid
installation on common walls as the unit will make
some operational noises while it is running.
To mount the boiler to the wall:
1. Affix the bracket securely to the wall and ensure
that it is level and that it can support the weight
of the boiler.
2. Align the grooves on the back of the boiler with
the tongues on the mounting bracket and hang
the boiler on the bracket.
When mounted with the mounting bracket, the
boiler will have a 5/8 in (16 mm) clearance from
the back of the wall.
CAUTION
It is necessary to leave clearance for service
access.
Clean, Debris and Chemical-free
Combustion Air
●
Do not install the boiler in areas where dust and
debris may accumulate or where hair sprays,
spray detergents, chlorine, or similar chemicals
are used.
●
Do not install the boiler in areas where gasoline or
other flammables are used or stored.
●
Ensure that combustible materials are stored
away from the boiler and that hanging laundry or
similar items do not obstruct access to the boiler
or its venting.
Operating Temperature
The ambient temperature at the installation location
must be above 32˚F (0˚C) and below 120˚F (49˚C).
High Elevation Installations
This unit may be installed at elevations up to 10,100
ft (3,078 m) for use with natural gas and propane.
Refer to “6. Setting the DIP Switches” on page 67
for the appropriate altitude setting.
WARNING
●
ALWAYS read and follow the Natural Gas High
Altitude Conversion Guide when installing
the gas orifice included with the kit in order
to prevent death, serious injury or property
damage.
●
The front cover will need to be removed
from the boiler to access the High Altitude
Conversion Kit.
●
Do NOT install this boiler at elevations above
10,100 ft (3,078 m).
