Kenmore 530, 334 owner manual Ret,,,,L, Gas Piping, Fire and Explosion Hazard, Drafthood Chimney

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	_._	VENT TO OUTDOORS
DRAFTHOOD	___R	CHIMNEY

Be sure vent pipe is properly connected to prevent escape of dangerous flue gases which could cause deadly asphyxiation.

Chemical vapor corrosion of the flue and vent system may occur

if air for combustion contains certain chemical vapors. Spray

can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and

sodium chloride, waxes, bleach and process chemicals are typical compounds which are potentially corrosive.

FIGURE 17.

The vent pipe from the water heater must be no less than the diameter of the draft hood outlet on the water heater and must slope upward at least 1/4 inch per linear foot (21 mm per meter).

See Figure 18.

CHIMNEY

FIGURE 18.

All vent gases must be completely vented to the outdoors of the

structure (dwelling). Install only the draft hood provided with the new water heater and no other draft hood.

Vent pipes must be secured at each joint with sheet metal screws.

There must be a minimum of 6 inches (153 mm) clearance

between single wall vent pipe and any combustible material. Fill and seal any clearance between single wall vent pipe and

combustible material with mortar mix, cement, or other

noncombustible substance. For other than single wall, follow

vent pipe manufacturer's clearance specifications. To insure a tight fit of the vent pipe in a brick chimney, seal around the vent pipe with mortar mix cement.

Breathing Hazard - Carbon Monoxide Gas

. Flue gases may escape if vent pipe is not connected.

•Do not store corrosive chemicals in vicinity of water heater.

•Chemical corrosion of flue and vent system can cause serious injury or death.

•Contact a qualified installer or service agency.

Breathing carbon monoxide can cause brain damage or death. Always read and understand instruction manual.

Failure to have required clearances between vent piping and

combustible material will result in a fire hazard.

Gas Piping

Fire and Explosion Hazard

•Do not use water heater with any gas other than the gas shown on the rating plate.

•Excessive pressure to gas control valve can cause serious

injury or death.

•Turn off gas lines during installation.

•Contact qualified installer or service agency.

Make

sure the

gas

supplied

is

the

same

type

listed

on

the model

rating

plate.

The

inlet

gas

pressure

must

not

exceed

14 inch water

column

(3.5kPa)

for

natural

and

propane

gas

(L.R)

gas.

The

minimum inlet gas pressure listed on the rating plate

is for

the

purpose

of input

adjustment.

If the

gas

control valve is

subjected

to

pressures

exceeding

1/2

pound

per

square

inch

(3.5kPa),

the

damage

to the

gas

control

valve

could

result

in a

fire or explosion from leaking gas.

If the main gas line shutoff serving all gas appliances is used,

also turn "OFF" the gas at each appliance. Leave all gas

appliances shut "OFF" until the water heater installation is complete.

A gas line of sufficient size must be run to the water heater. Consult the current edition of National Fuel Gas Code ANSI

Z223.1/NFPA 54 and your gas supplier concerning pipe size.

There must be:

A readily accessible manual shut off valve in the gas supply line serving the water heater, and

A drip leg (sediment trap) ahead of the gas control valve to

help prevent dirt and foreign materials from entering the gas control valve.

A flexible gas connector or a ground joint union between the shut off valve and control valve to permit servicing of the unit.

Be sure to check all the gas piping for leaks before lighting the water heater. Use a soapy water solution, not a match or open flame. Rinse off soapy solution and wipe dry.

The minimum inlet gas pressure shown on the rating plate is that which will permit firing at the rated input.

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