30
Operating the water heater cont.
The.following.is.additional.information.which.aid.in.deter-
mining.a.safe.working.temperature.to.meet.each.household.
need .
Maximum.water.temperatures.occur.just.after.the.burner.
has.shut.off ...To.determine.the.water.temperature,.turn.on.
a.hot.water.faucet.and.place.a.thermometer.in.the.water.
stream ...If.an.adjustment.to.the.water.temperature.is.pre-
ferred,.then.refer.to.the.Water.Heater.User.Display.–.Opera-
tion.Instructions.for.instruction.on.adjusting.the.local.and.
remote.user.display.temperature.setpoints .
.
A.condition.known.as.“stacking”.or.“layering”.can.occur.
when.a.series.of.short.and.frequent.hot.water.draws.are.
taken ...The.hottest.temperature.water.will.be.at.the.top.of.
the.tank,.closest.to.the.outlet.pipe.delivering.hot.water.to.
the.home .
Stacking.can.cause.this.top.layer.of.water.to.be.hatter.than.
the.water.toward.the.bottom.of.the.tank.near.the.gas.control.
(thermostat) ....Therefore,.always.remember.to.test.the.water.
temperature.with.your.hand.before.use.and.remember.that.
hotter.water.increases.the.risk.of.scald.injury ..
Also,.always.supervise.young.children.or.others.who.are.
incapacitated .
The.gas.control.(thermostat).is.constructed.with.a.built.in.
safety.shut-off.device.designed.to.shut.off.the.gas.supply.to.
the.burner.if.the.main.burner.is.extinguished.for.any.reason .
The.gas.control.(thermostat).is.also.equipped.with.a.gas.
shut.off.device.that.will.shut.off.the.gas.supply.to.the.burn-
er.if.the.water.heater.exceeds.normal.operating.tempera-
tures ...Refer.to.the.“Before.You.Call.For.Service”.section.of.
this.manual,.or.contact.your.dealer .
!
WARNING: Should overheating occur or
the gas supply fail to shut off, turn off the
manual gas control valve to the appliance
.
If.the.water.heater.has.been.subjected.to.fire,.flood.or.physi-
cal.damage,.turn.off.the.manual.gas.control.(shut-off).valve.
and.do.not.operate.the.water.heater.again.until.it.has.been.
checked.by.a.qualified.service.technician .
NOTICE:..Replace.any.part.of.the.gas.control.system.
which.has.been.under.water .
Time/Temperature Relationship in Scalds
...Water.Temperature.
Time.To.Produce.a.Serious.Burn
.
120°F
More than 5 minutes
125°F
1
1
/
2
to 2 minutes
130°F
About 30 seconds
135°F
About 10 seconds
140°F
Less than 5 seconds
145°F
Less than 3 seconds
150°F
About 1
1
/
2
seconds
155°F
About 1 second
Table.courtesy.of.Shriners.Burn.Institute
90° F
113°F
98°F
105°F
120°F
130°F
140°F
150°F
160°F
Temperatures are approximate
Water Temperature Setting…