Eccotemp SH22 Manuel page 22

Installing the SH22i Water Heater Continued...
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
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"
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.
NOTICE: If the duct openings which supply combustion and ventilation air are to be covered
with a protective screen or grill, the net free area (openings in the material) of the covering
material must be used in determining the size of the openings. Protective screening for the
openings MUST NOT be smaller than 1/4" to prevent clogging by lint or other debris.
Corrosive Atmospheres
The air in beauty shops, dry cleaning
establishments, photo processing labs, and
storage areas for liquid and powdered bleaches
or swimming pool chemicals often contain such
halogenated hydrocarbons.
An air supply containing halogenated
hydrocarbons may be safe to breathe, but when
it passes through a gas flame corrosive elements
are released that will shorten the life of any gas
burning appliance.
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating plate of the water
heater to be certain the type of gas supplied corresponds to the water heater requirements. Verify
all included parts are present (see below).
PLEASE NOTE: SH22 IS FOR OUTDOOR PERMANENT INSTALLATIONS ONLY AND SH22I IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL
AND ALL ECCOTEMP CONTENT IS SUBJECT TO CHANGE WITHOUT NOTICE. PLEASE VISIT SUPPORT.ECCOTEMP.COM FOR MORE INFORMATION.
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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.
Air Openings
One is to be located within 12" above the floor and the other is to be located
Min. 200 Sq. In.
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.
Min. 4"
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.
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Propellants from common spray cans or gas
leaks from A/C and refrigeration equipment are
highly corrosive after passing through a flame.
The water heater warranty is voided when failure
of the heater is due to operation in a corrosive
atmosphere.
NOTICE: The water heater should not be
installed near an any air supply containing
halogenated hydrocarbons.
Phone: 866-356-1992