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Installing the water heater.
The installation of this water heater must be in accordance with the Manufactured Home Construction and
Safety Standard (Title 24, CFR; Part 3280) and the following instructions; instructions supplied with the Co-
Axial Roof Jack assembly, local codes, and utility company requirements governing the installation of water
heaters in manufactured homes (mobile homes) and/or in the absence of local codes, the latest edition of The
National Fuel Gas Code, ANSI Z223.1.
Location
The water heater should not be located
in an area where leakage from the tank
or connections will result in damage to
the area adjacent to the heater or to lower
floors of the structure.
When such areas cannot be avoided it is
recommended that a suitable catch pan,
adequately drained, must be installed
under the water heater.
Catch pan kits are available from the store
where the water heater was purchased, or
any water heater distributor.
This water heater must be installed
within an enclosure so as to separate the
water heater’s combustion and venting
system from the interior atmosphere of
the manufactured home. The enclosure
must be large enough to allow for bracing.
Front clearance must also be provided
for inspection and servicing of the water
heater.
Make certain the floor underneath
the water heater is strong enough to
sufficiently support the weight of the water
heater once it is filled with water.
A gas fired water heater or any other
appliance should not be installed in a space
where liquids which give off flammable
vapors are to be used or stored. Such
liquids include gasoline, LP gas (butane
or propane), paint or adhesives and their
thinners, solvents or removers.
Because of natural air movement in a room
or other enclosed space, flammable vapors
can be carried some distance from where
liquids which give off flammable vapors
are to be used or stored. The open flame of
the water heater’s pilot or main burner can
ignite these vapors.
The water heater must be located so it is
not subject to physical damage, for example,
by moving vehicles, area flooding, etc.
All air for combustion must be obtained
from the outside atmosphere, and the
products of combustion (flue gases) must
be discharged directly to the outside
atmosphere through the gas vent Co-Axial
Roof Jack assembly. Because the water
heater is of the sealed combustion type,
a vent hood is not required between the
water heater and the Co-Axial Roof Jack.
Refer to installation illustration as shown
in this manual.
Install the water heater with minimum
clearance from combustible construction
of 0 inch sides and rear; 3 inches from
front of control; 12 inches from ceiling.
If clearances stated on the Instruction/
Warning label, located on the front
of the water heater, differ from the
aforementioned clearances, install heater
according to the clearances stated on the
Instruction/Warning label.
The water heater may be installed on
combustible flooring, but not directly on
carpeting.
If the water heater must be installed on
carpeting, place a wood or metal panel
beneath the water heater extending beyond
its full width and depth at least 3 inches
in all directions. If the water heater is
installed in an alcove or closet, the entire
floor must be covered by the wood or
metal panel. A minimum of 24” clearance
from the front and top should be available
for adequate inspection and servicing.
CAUTION: Provisions should be made so that in
the event the water heater or one of its fittings were
to leak, the resulting flow of water will not cause
damage to the manufactured home. It is
recommended that a suitable catch pan, adequately
drained, be installed under the water heater.
CAUTION: DO NOT subject the water heater
to any water distribution system air pressure test.
The water heater should either be isolated with
valves at the inlet and outlet water connections or
disconnected during the test. Failure to properly
isolate the water heater during an air pressure
test presents a hazard to life and property. With a
water pressure test the water heater need not be
isolated.
WARNING: Combustible construction refers to
adjacent walls and ceilings and should not be
confused with combustible or flammable
products and materials. Combustible and/or
flammable products and materials should never
be stored in the vicinity of this or any gas
appliance.
7
The auxiliary catch pan
installation MUST conform
to local codes.
Diameter of
water heater
plus 2” min.
Max.
2
”
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