www.camplux.com
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Visit Us: Camplux.com
3330-A Marathon Ct Charleston, SC 29418
(844) 538-7475
Min.4″
Air Openings
Min 200 sp.In
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.
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 A:
A confined space is one having a volume of less than 50 cubic feet per 1,000
BTU/Hr 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 with 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 BTU/Hr of the total input rating of all the appliance 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 BTU/Hr 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 BTU/Hr
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″.
NOTICE:
If the water heater is installed in an unconfined space within a building
of conventional frame, masonry or metal construction, infiltration air is normally
adequate for proper combustion and ventilation. If the water heater is installed in
a confined space, provisions for combustion and ventilation air must be made.
