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If the clearances stated on the Instruction/Warning Label, located on the front
panel of the heater differ, install the water heater according to the clearances
stated on the label.
WARNING: Combustible construction refers to adjacent walls and
ceilings and should not be confused with combustible or flammable
products and mate rials. Combustible and/ or flammable products and
materials should never be storedhine vt icinity of this or any gas appliance.
Proper operation of the water heater requires air for combustion and ventilation.
Provisions for combustion and ventilation air must comply with referenced codes
and standards.
Combustion and ventilation air
A confined space is one having a volume of less
than 50 cubic feet per 1,000 BTUH of the aggregate
input of all appliances within that space.
The air must be supplied through two permanent
openings of equal area. One is to be located within
12” above the floor and the other is to be located
within 12” below the ceiling.
The minimum net free area of each opening must
not be less than one
square inch per 1,000 BTUH of the total input rating
of all the appliances in the enclosure (but not less than 100 square inches), if
each opening communicates with other unconfined areas inside the building.
Buildings of unusually tight construction shall have the combustion and ventilation
air supplied from outdoors, or a freely ventilated attic or crawl space. If air is
supplied from outdoors, directly or through vertical ducts, there must be two
openings located as specified above and each must have a minimum net free
area of not less than one square inch per 4,000 BTUH of the total input rating of
all the appliances in the enclosure.
If horizontal ducts are used to communicate with the outdoors, each opening must
have a minimum net free area of not less than one square inch per 2,000 BTUH
of the total input rating of all the appliances in the enclosure. If ducts are used, the
minimum dimensions of rectangular air ducts shall not be less than 4”.
Air Openings
Min.200Sq.In
Min.4″
1
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3330-A Marathon Ct Charleston, SC 29418
1(844) 538-7475
Summary of Contents for WA686M-NG
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