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with dry cleaning equipment, it is imperative that the water
heater or water heaters be installed so that combustion
and ventilation air be taken from outside these areas.
Propellants of aerosol sprays and volatile compounds,
(cleaners, chlorine based chemicals, refrigerants, etc.) in
addition to being highly fl ammable in many cases, will also
react to form corrosive hydrochloric acid when exposed to
the combustion products of the water heater. The results
can be hazardous, and also cause product failure.
AIR REQUIREMENTS
For safe operation an adequate supply of fresh,
uncontaminated air for combustion, dilution and ventilation
must be provided.
Note: Contaminated or dusty air may cause build-up on
the blower wheel resulting in nuisance shut downs.
An insuffi cient supply of air can cause recirculation of
combustion products resulting in contamination that may
be hazardous to life. Such a condition often will result in
a yellow, luminous burner fl ame, causing sooting of the
combustion chamber, burners and fl ue tubes and creates
a risk of asphyxiation.
Never obstruct the fl ow of dilution/ventilation air. If you
have any doubts or questions at all, call your gas supplier.
Failure to provide the proper amounts of air can result in
a fi re or explosion and cause property damage, serious
bodily injury or death. The combustion and dilution air
inlets are shown in Figure 2.
Important: Power Vented water heaters require air for
combustion and dilution air for the blower.
Air supply must be provided as required by the current
edition of "Natural Gas and Propane Installation Codes"
B149.1.
CHEMICAL VAPOUR CORROSION
CORROSION OF THE FLUEWAYS AND VENT SYSTEM
MAY OCCUR IF AIR FOR COMBUSTION CONTAINS
CERTAIN CHEMICAL VAPOURS . SUCH CORROSION
MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION.
Spray can propellants, cleaning solvents, refrigerator and
air conditioning refrigerants, swimming pool chemicals,
calcium and sodium chloride (water softener salt), waxes,
and process chemicals are typical compounds which
are potentially corrosive. Do not store products of this
sort near the heater. Also air which is brought in contact
with the heater should not contain any of the chemicals.
If necessary, uncontaminated air should be obtained
from remote or outside sources. The Limited Warranty is
voided when failure of water heater is due to a corrosive
atmosphere. See Limited Warranty for complete terms
and conditions.
331432-00
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