8
Installing the water heater.
Combustion and Ventilation Air
Ventilation (ambient) air temperature
must be 100°F or less. Proper operation
of the water heater requires air for
combustion and ventilation. Provisions
for combustion and ventilation air
must comply with referenced codes and
standards.
DO NOT block or obstruct any of the
combustion air inlet openings located
around the perimeter of the water
heater. A minimum of 1” is required
between these combustion air inlet
openings and any obstruction.
NOTICE: If the water heater is
installed in an unconfined space within a
building of conventional frame, masonry
or metal construction, infiltration
air is normally adequate for proper
combustion and ventilation. If the
water heater is installed in a confined
space, provisions for combustion and
ventilation air must be made.
DO NOT
.obstruct.or.block.the.Flammable.
Vapor.Sensor .
A.confined.space.is.one.having.a.volume.
of.less.than.50.cubic.feet.per.1000.Btuh.
of.the.aggregate.input.of.all.appliances.
within.that.space ..
The.air.must.be.supplied.through.two.
permanent.openings.of.equal.area ..One..
is.to.be.located.within.12”.above.the.floor.
and.the.other.is.to.be.located.within.12”.
from.the.ceiling .
The.minimum.net.free.area.of.each.opening.
must.not.be.less.than.one.square.inch.
per.1000.Btuh.of.the.total.input.rating.
of.all.the.appliances.in.the.enclosure.
(but.not.less.than.100.square.inches),.if.
each.opening.communicates.with.other.
unconfined.areas.inside.the.building .
Buildings.of.unusually.tight.construction.
shall.have.the.combustion.and.ventilation.
air.supplied.from.outdoors,.or.a.freely.
ventilated.attic.or.crawl.space .
If.air.is.supplied.from.outdoors,.directly.or.
through.vertical.ducts,.there.must.be.two.
openings.located.as.specified.above.and.
each.must.have.a.minimum.net.free.area.
of.not.less.than.one.square.inch.per.4000.
Btuh.of.the.total.input.rating.of.all.the.
appliances.in.the.enclosure .
If.horizontal.ducts.are.used.to.
communicate.with.the.outdoors,.each.
opening.must.have.a.minimum.net.free.
area.of.not.less.than.one.square.inch.per.
2000.Btuh.of.the.total.input.rating.of.all.
the.appliances.in.the.enclosure ..If.ducts.
are.used,.the.minimum.dimensions.of.
rectangular.air.ducts.shall.not.be.less.than.
3” .
NOTICE: If the duct openings which
supply combustion and ventilation air
are to be covered with a protective
screen or grill, the net free area
(openings in the material) of the
covering material must be used in
determining the size of the openings.
Protective screening for the openings
MUST NOT be smaller than 1/4”mesh
to prevent clogging by lint or other
debris.
Corrosive Atmospheres
The.air.in.beauty.shops,.dry.cleaning.
establishments,.photo.processing.
labs,..and.storage.areas.for.liquid.and.
powdered.bleaches.or.swimming.pool.
chemicals.often.contain.such.halogenated.
hydrocarbons .
An.air.supply.containing.halogenated.
hydrocarbons.may.be.safe.to.breathe,..
but.when.it.passes.through.a.gas.flame.
corrosive.elements.are.released.that..
will.shorten.the.life.of.any.gas.burning.
appliance .
Propellants.from.common.spray.cans.
or.gas.leaks.from.A/C.and.refrigeration.
equipment.are.highly.corrosive.after.
passing.through.a.flame .
The.water.heater.warranty.is.voided.when.
failure.of.the.heater.is.due.to.operation.in.
a.corrosive.atmosphere .
NOTICE: The water heater
should not be installed near
an air supply containing
halogenated hydrocarbons.
Inspect Shipment
Inspect.the.water.heater.for.possible.damage ..Check.the.markings.on.the.rating.plate.of.
the.water.heater.to.be.certain.the.type.of.gas.supplied.corresponds.to.the.water.heater.
requirements .
NOTICE: Do not install the
water heater in attics where
the temperature may exceed
100°F. This water heater is
equipped with a temperature
sensing device that will
shut off the water heater
if the maximum allowable
vent pipe temperature is
exceeded.
Содержание 43VP40E2
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