Gas Piping - Maytag HX40NARS User Manual

Instructions for Installation (cont'd)
Gas Piping
All vent gases must be completely vented to the outdoors of
AWARNING
the structure (dwelling). Install only the draft hood provided Make sure the gas supplied is the same type listed
with the new water heater and no other draft hood. on the model rating plate. The inlet gas pressure
Vent pipes must be secured at each joint with sheet metal
must not exceed 10.5 in. water column (2.6kPa) for
natural gas or 13 in. water column (3.2kPa) for
screws,
propane (L.R) gas. The minimum inlet gas pressure
listed on the model rating plate is for the purpose
] TO of input adjustment.
CHIMNEY
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I If the gas control valve is subjected to pressures /
' _ exceeding _ pound per square inch (3.5kPa),
the /
VENT PIPEINSTALLATION damage to the gas control valve could result in a /
fire or exp osion from eak ng gas. j
There must be a minimum of 6" clearance between singlewall vent
pipe and any combustible material. Fill and seal any clearance
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between single wall vent pipe and combustible material with mortar If the main gas line
shutoff
serving all gas appli- ]
antes is used, also turn "off" the gas at each appli-|
mix,cement, or other noncombustible substance.For other than sin- ance. Leave all gas appliances shut off until the ]
gle wall, followvent pipe manufacturer'sclearance specifications.To water heater installation is complete. ]
insure a tight fit of the vent pipe in a brick chimney,seal around the
vent pipe with mortar mix cement. A gas line of sufficient size must be run to the water heater.
Consult the latest edition of National Fuel Gas Code ANSI
Z223.1, also referred to as NFPA 54 and the gas company
&WARNING
between vent concerning pipe size. Failure to have required clearances
hazard.piping and combustible material will resu t n a f re There must be:
• A readily accessible manual shut off valve in the gas supply
llne serving the water beater, and
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• A drip leg (sediment trap) ahead of the gas control valve to
Be sure vent pipe is properly connected to prevent
help prevent dirt and foreign materials from entering the gas
escape of dangerous flue gases which could cause
control valve.
deadly asphyxiation.
• A flexible gas connector or a ground joint union between the
shutoffvalve and control valve to permit servicing of the unit.
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Be sure to check all the gas piping for leaks before lighting the
Chemical vapor corrosion of the flue and vent sys-
water heater. Use a soapywater solution, not a match or open
tem may occur if air for combustion contains certain
chemical vapors. Spray can propellants, cleaning sol-
flame. Rinse offsoapy solution and wipe dry.
vents, refrigerator and air conditioner refrigerants,
swimming pool chemicals, calcium and sodium chlo- Standard Models are for installation up to 3,300 feet above
ride, waxes, bleach, and process chemicals are typi- sea level.
cal compounds which are potentially corrosive.
High Altitude Models are for installation from 3,300 to
5,500 feet above sea level.
Ifa standard model is installed above 3,300 feet or a high alti-
tude model is installed above 5,500 feet, the input rating must
be reduced at the rate of 4 percent for each 1,000 feet above
sea level. Contact your local gas utility for further information.
AWARNING I
The appliance and its gas connection must be leak I
testedbefore placing the appliance in operation. ]
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