
10
Installing the water heater.
A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves
and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is supplied and must
remain in the opening provided and marked for the purpose on the water heater. No valve of any type
should be installed between the relief valve and the tank. Local codes shall govern the installation of
relief valves.
Relief Valve
The.pressure.rating.of.the.relief.valve.
must.not.exceed.150.PSI,.the.maximum.
working.pressure.of.the.water.heater.as.
marked.on.the.rating.plate ..
The.Btuh.rating.of.the.relief.valve.must.
equal.or.exceed.the.Btuh.input.of.the.
water.heater.as.marked.on.its.rating.plate .
Position.the.outlet.of.the.relief.valve.
above.a.suitable.open.drain.to.eliminate.
potential.water.damage ..Piping.used.
should.be.of.a.type.approved.for.hot.water.
distribution ..
The.discharge.line.must.be.no.smaller.
than.the.outlet.of.the.valve.and.must.
pitch.downward.from.the.valve.to.allow.
complete.drainage.(by.gravity).of.the.
relief.valve.and.discharge.line ..
The.end.of.the.discharge.line.should.not.
be.threaded.or.concealed.and.should.be.
protected.from.freezing ..No.valve.of.
any.type,.restriction,.or.reducer.coupling.
should.be.installed.in.the.discharge.line .
To Fill the Water Heater
Make.certain.that.the.drain.valve.is.
closed,.then.open.the.shut-off.valve.in.the.
cold.water.supply.line .
Open.each.hot.water.faucet.slowly.to.
allow.the.air.to.vent.from.the.water..
heater.and.piping ..
A.steady.flow.of.water.from.the.hot.water.
faucet(s).indicates.a.full.water.heater .
Do.not.allow.the.flammable.vapor.sensor.
to.become.submerged.in.water .
WARNING: The tank
must be full of water before
heater is turned on. The
water heater warranty does
not cover damage or failure
resulting from operation
with an empty or partially
empty tank.
Condensation
Condensation.can.form.on.the.tank.
when.it.is.first.filled.with.water ..
Condensation.might.also.occur.with.a.
heavy.water.draw.and.very.cold.inlet.
water.temperatures ..
Drops.of.water.falling.on.the.burner.can.
produce.a.sizzling.or.pinging.sound .
This.condition.is.not.unusual,.and.will.
disappear.after.the.water.becomes.heated ..
If,.however,.the.condensation.continues,.
examine.the.piping.and.fittings.for.
possible.leaks .
Содержание 43VP40E2
Страница 39: ...39 Notes This page intentionally left blank ...