Gas Piping - Maytag HN41240X User Manual

Instructions for Installation (cont'd)
Gas Piping
All vent gases must be completely vented to the outdoors of
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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 I
Vent pipes must be secured at each joint with sheet metal must not exceed 10.5 inches water column (2.6 kPa)] I
for natural gas or 13 inches water column (3.2 kPa) I
screws, for Propane (L.R) gas. The minimum inlet gas pres-
sure listed on the model rating plate is for the pur-
TO pose of input adjustment.
I
CHIMNEY
t &WARNING
If thegas control valve is subjected to pressures I
PER LINEAR FOOT
, t exceeding 1/=pound per square inch (3.5kPa), the I
damage to the gas control valve could result in a
VENT PIPEINSTALLATION f re or explos on from eak ng gas.
There mustbe a minimum of 6" clearance between singlewall vent
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pipe and any combustible material. Fill and seal any clearance
If the main gas line shutoff serving all gas appli-
between single wallvent pipe and combustible material with mortar ances 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
] concerning pipe size.
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Failure to have required clearances between vent
piping and combustible material will result in a fire There must be:
hazard, • A readily accessible manual shut off valve in the gas supply
line serving the water heater, 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 dancjerous flue gases which could cause controlvalve.
deadly asphyxlat on. • A flexible gas connector or a ground joint union between the
shutoffvalve and control valve to permit servicing of the unit.
A, WARNING ] Be sure to check all the gas piping for leaks before lighting the
Chemical vapor corrosion of re" flue and vent sys- I1
water heater. Use a soapy water solution, not a match or open
tern may occur if air for combustion contains certain I flame. Rinse offsoapy solution and wipe dry.
chemical vapors. Spray can propellants, cleaning sol- I
vents, refrigerator and air conditioner refrigerants, I
swimming pool chemicals, calcium and sodium chlo- [
StandardModels 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. I
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.
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The appliance and its gas connection must be leak
tested before placing the appliance in operation.
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