Installation Guide

8
the environment in which the water heater is installed. Water heaters
are sometimes installed in locations where leakage may result in
property damage, even with the use of a metal drain pan piped to a
drain. However, unanticipated damage can be reduced or prevented
by a leak detector or water shut-off device used in conjunction with
a piped drain pan. These devices are available from some plumbing
supply wholesalers and retailers, and detect and react to leakage
in various ways:
• Sensors mounted in the drain pan that trigger an alarm or turn off
the incoming water to the water heater when leakage is detected.
• Sensors mounted in the drain pan that turn off the water supply
to the entire home when water is detected in the drain pan.
• Water supply shut-off devices that activate based on the water
pressure differential between the cold water and hot water pipes
connected to the water heater.
• Devices that will turn off the gas supply to a gas water heater
while at the same time shutting off its water supply.
INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS
(VAPORS) ARE LIKELY TO BE PRESENT OR STORED
(GARAGES, STORAGE AND UTILITY AREAS, ETC.): Flammable
liquids (such as gasoline, solvents, propane [LP or butane, etc.] and
other substances such as adhesives, etc.) emit fl ammable vapors
which can be ignited by a gas water heater’s pilot light or main burner.
The resulting fl ashback and fi re can cause death or serious burns
to anyone in the area, as well as property damage. Gasoline and
other fl ammable substances should never be stored or used in the
same room or area containing a gas water heater or other open
fl ame or spark producing appliance. Additionally, do not store or use
gasoline or other fl ammable vapors and liquids in the vicinity of the
water heater air intake. NOTE: Flammable vapors may be drawn
by air currents from other areas of the structure to the appliance.
Also, the water heater must be located and/or protected so it is not
subject to physical damage by a moving vehicle.
This water heater must not be installed directly on carpeting.
Carpeting must be protected by metal or wood panel beneath the
appliance extending beyond the full width and depth of the appliance
by at least 3 inches (76.2 mm) in any direction, or if the appliance is
installed in an alcove or closet, the entire fl oor must be covered by
the panel. Failure to heed this warning may result in a fi re hazard.
IMPORTANT: Keep combustibles such as boxes, magazines,
clothes, etc., away from the water heater area.
A gas water heater cannot operate properly without the correct
amount of air for combustion. Provide ventilation and combustion
air by means of an air intake duct assembly as stated in “Water
Heater Installation”. Never obstruct the fl ow of ventilation air. If you
have any doubts or questions at all, call your gas supplier. Failure
to provide the proper amount of combustion air can result in a fi re or
explosion and cause death, serious bodily injury, or property damage.
If this water heater will be used in beauty shops, barber shops,
cleaning establishments, or self-service laundries 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 change to corrosive
hydrochloric acid when exposed to the combustion products of
the water heater. The results can be hazardous and also cause
product failure.