OPERATING INSTRUCTIONS POWER VENTED GAS FIRED WATER HEATER

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Locate near a floor drain and in an area where leakage of the tank
or water piping will not result in damaging adjacent areas or lower
floors of the structure. Where such a location is not available, a
suitable drain pan must be installed under this water heater. This
pan shall be 1½ “ (40 mm) deep and a diameter that is a minimum
of 2" (50 mm) greater than the diameter of the water heater. A
suitable pipe properly connected to an adjacent floor drain shall
be provided.
This heater may be installed in a closet or alcove and is certified
for operation on a combustible floor.
WARNING
Do not install directly on carpet. Instead, place the water heater
on a metal or wood panel extending a minimum of 3" (75 mm) from
all sides. In alcoves or closets, cover the carpet completely.
Ensure that this panel is capable of supporting the weight of this
heater when filled with water.
FAILURE TO PROPERLY INSTALL THIS HEATER
MAY RESULT IN A FIRE HAZARD.
II) AIR REQUIREMENTS
General.
Ø An adequate air supply shall be provided for
combustion and ventilation of this water
heater. An insufficient supply can result in
poor combustion and possible sooting of the
burner, combustion chamber or flue
passageway. This may present a potential
fire hazard or could create a serious health
hazard by producing carbon monoxide.
Where an exhaust fan or any other air consuming appliance (Eg.
Clothes dryer, furnace, etc.) is installed in the same space as the
water heater, sufficient air openings must be available to provide
fresh air when all appliances are operating simultaneously.
The area in which the heater is located is classified as either “an
unconfined space” or “a confined space.”
An unconfined space is defined as a space having a volume not
less than 50 cubic feet per 1000 BTU/hour (4.8 cubic meters per
kilowatt) of combined input rating of all appliances using the
space. Adjacent open rooms may be included as part of the
unconfined space. There shall be no closeable doors between
these rooms. An example of this is an open basement.
A confined space is one smaller than described above. Air shall
be supplied through permanent openings as described in Figures
3 and 4. At no time shall an air opening have a dimension of less
than 3" (75 mm) and at no time shall any top opening be lower
than the top of the water heater.
For buildings that are not well sealed (do not have tight fitting
doors and windows) natural air infiltration may provide sufficient
air required for combustion and ventilation. For buildings using
tight construction (newer and renovated structures), the air
supply shall be introduced from the outdoors, regardless of
whether the space is confined or unconfined.
Combustion Air “Supply” Ducts
Air supply ducts shall be of galvanized steel or equivalent
corrosion resistant material. A single air duct may not be
substituted when required for upper and lower air openings.
Horizontal upper combustion air ducts shall not slope downward
toward the air inlet.
Louvers and Grills
Openings for air supply ducts must provide free unobstructed air
movement. Louver and grill openings must be sized to ensure that
the FREE OPEN AREA is never less than the area of the air
duct.