Bradford White ULG275H763N-475 Installation/Operation Instruction Manual page 6

Gas-fired water heater
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Installation (Locating the Water Heater) continued-
Liquefied petroleum gases/propane gases are heavier than air and will
remain at floor level if there is a leak. Basements, crawl spaces, closets
and areas below ground level will serve as pockets for accumulation of
leaking gas. Before lighting, smell all around the appliance area for gas.
Be sure to smell next to the floor.
IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch any electric switch; do not use any telephone in your
building.
Immediately call your gas supplier from a neighbor's telephone.
Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE APPLIANCE UNTIL LEAKAGE IS CORRECTED!
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE
NOT CERTAIN OF THE FOLLOWING:
Liquefied petroleum gases/propane gas and natural gas have an
odorant added by the gas supplier that aids in detection of the gas.
Most people recognize this odor as a "sulfur" or "rotten egg" smell.
Other conditions, such as "odorant fade" can cause the odorant to
diminish in intensity, or "fade", and not be as readily detectable.
If you have a diminished sense of smell or are in any way unsure of
the presence of gas, immediately contact your gas supplier from a
neighbor's telephone.
Gas detectors are available. Contact your gas supplier or plumbing
professional for more information.
Proper venting practices must be considered when selecting a location for this
water heater. For exact venting specifications, please consult the Venting
section, of these Installation and Operating Instructions.
This water heater must be located in an area where leakage of the tank, water
line connections, or the combination temperature and pressure relief valve will
not result in damage to the area adjacent to the water heater or to lower floors
of the structure. When such locations cannot be avoided, a suitable drain pan
must be installed under the water heater. The drain pan must have a minimum
length and width of at least 4 in. (10.2 cm) greater than the diameter
of the water heater and must not restrict proper combustion air flow to the
water heater. The drain pan, as described above, can be purchased from your
plumbing professional. The drain pan must be piped to an adequate drain.
The piping must be at least 3/4 inch (1.9 cm) in diameter and pitched for
proper drainage.
WARNING
WARNING
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