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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 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
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.
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 roof jack
assembly. There must not be any door or
other opening into the water heater
enclosure from the inside of the
manufactured home.
Refer to installation methods A, B or C as
shown on page 9 of this manual. The
water heater enclosure access panel (door)
must be in the outside wall of the
manufactured home. Any opening for
piping must be sealed. Minimum ceiling
height within enclosure is 6'6".
Install the water heater with minimum
clearance from combustible construction
of 0-inch sides and rear; 3 inches from
front of control; 12 inches top. If
clearances stated on Instruction/Warning
label, located on front of 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” in all
directions. If the water heater is installed
in an alcove or closet, the entire floor
must be covered by the panel.
Make certain that the floor underneath the
water heater is strong enough to support
the weight of the water heater once it is
filled with water.
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.
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.
7
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.