17
Installing the Water Heater
• Install the water heater with a minimum clearance of 12 inches
(300 mm) above an exterior grade or as required by local codes.
• Install the exhaust vent in an area that is free from obstructions
and does not allow the exhaust to accumulate.
• Do not enclose the vent termination.
• 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 is normally kept closed or that is not
adequately ventilated.
For more information about venting, refer to "Installing a Vent (For
indoor installation only)" on page 27.
Clearances
The water heater should be installed in an area that allows for
service and maintenance access to utility connections, piping, filters,
and traps. Ensure the following clearances are maintained:
Top
Back
Front
Side
Side
Bottom
Clearance From Wall Mounting
Top
12 inches (305 mm) min.
Back
0.6 inches (15 mm) min.
Front
6 inches (152 mm) min.
Sides
3 inches (76 mm) min.
Bottom
12 inches (300 mm) min.
Clean, debris and chemical-free combustion
air
• Do not install the water heater in areas where dust and debris
may accumulate or where combustion air can be contaminated.
• Do not install the water heater in areas with greasy fumes or
heavy amounts of steam, if necessary, take measures to prevent
fumes and steam from entering the water heater.
• Chemicals that are corrosive in nature should not be stored or
used near the water heater.
Callibration mode
The installation circumstances can be changed depending on the
elevation and pipe length. To maintain constant heat capacity, run
the Calibration Mode after installing the water heater. For more
information about Calibration Mode, refer to "Self Calibration Mode"
on page 51.
Position
Caution
Do not mount the water heater to unsubstantial flooring or
unreinforced dry wall.
The water heater can be mounted to the wall. For easy installation,
use the mounting bracket to mount the water heater to standard
wall studs. If the strength of the wall is insufficient and or if the
framing is non-standard or uneven, reinforce the area before
installation. Avoid installation in unstable locations as the water
heater will make some operational noises while it is running.
Notice
Consider vent length and surrounding circumstances when mounting
the water heater.
Caution
The appliance should be located in an area where leakage of
the tank or connections will not result in damage to the area
adjacent to the appliance or to lower floors of the structure.
When such locations can not be avoided, it is recommended
that a suitable drain pan, adequately drained, be installed
under the appliance. The pan must not restrict combustion air
flow.