A.O. Smith 315795-000 MH - Manuel (Page 8)

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These devices are available from some plumbing supply wholesalers
and retailers, and detect and react to leakage in various ways:
• Sensors mounted in the metal drain pan that trigger an alarm or
turn off the incoming water to the water heater when leakage is
detected.
• Sensors mounted in the metal drain pan that turn off the water supply
to the entire home when water is detected in the metal 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.
If installation in such areas is your only option, then the installation
must be accomplished in a way that the pilot fl ame and main burner
fl ame are elevated from the fl oor at least 18 inches (45.7 cm). While
this may reduce the chances of fl ammable vapors, from a fl oor spill
being ignited, 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. 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.
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.
INSULATION BLANKETS
• Do not obstruct water heater air
intake with insulating blanket.
• Gas and carbon monoxide detec tors
are available.
• Install water heater in accordance
with the instruction manual.
• Install water heater in accordance
with the instruction manual and
CAN/CSA B149.1-current edition
( N a t u r a l G a s a n d P r o p a n e
Installation Code) and all local/
provincial codes.
• To avoid injury, combustion and
ventilation air must be taken from
outdoors.
• Do not place chemical vapor
emitting products near water
heater.