Insulation Blankets - State Water Heaters DIRECT VENT GAS WATER HEATERS Instruction Manual

Residential direct vent gas water heaters

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Table of Contents

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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 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 flammable vapors which can be ignited

by a gas water heater's pilot light or main burner. The resulting flashback

and fire 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

flame and main burner flame are elevated from the floor at least 18

inches. While this may reduce the chances of flammable vapors, from

a floor spill being ignited, gasoline and other flammable substances

should never be stored or used in the same room or area containing a

gas water heater or other open flame 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 floor must be covered by the panel. Failure

to heed this warning may result in a fire 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 flow 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 fire or explosion and cause

death, serious bodily injury, or property damage.

• Install water heater in accordance

• To avoid injury, combustion and

• Do not place chemical vapor

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

flammable 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.