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Moisturefromtheproductsofcombustioncondenseonthe
coolertanksurfacesandformdropsofwaterwhichmayfall
ontotheburnerorotherhotsurfacestoproducea"sizzling"or
"frying"noise.
Excessivecondensationcancausepilotoutageduetowater
runningdownthefluetubeontothemainburnerandputting
outthepilot.
Becauseofthesuddennessandamountofwater,condensation
watermaybediagnosedasa "tankleak".Afterthewaterin
thetankwarmsup(about1-2hours),theconditionshould
disappear.
Donotassumethewaterheaterisleakinguntiltherehasbeen
enoughtimeforthewaterinthetanktowarmup.
Anundersizedwaterheaterwillcausemorecondensation.
Thewaterheatermustbesizedproperlytomeetthefamily's
demandsforhotwaterincludingdishwashers,washingmachines
andshowerheads.
Excessivecondensationmaybenoticedduringthewinterand
earlyspringmonthswhenincomingwatertemperaturesareat
theirlowest.
Goodventingisessentialforagasfiredwaterheatertooperate
properlyaswellastocarryawayproductsofcombustionand
watervapor.
Smoke Odor
It is not uncommon to experience a small amount of smoke and
odor during the initial start-up. This is due to burning off of oil
from metal parts, and will disappear in a short while.
Operational Conditions
Smelly Odor
In each water heater there is installed at least one anode rod
(see parts section) for corrosion protection of the tank. Certain
water conditions will cause a reaction between this rod and the
water. The most common complaint associated with the anode
rod is one of a "rotten egg smell". This odor is derived from
hydrogen sulfide gas dissolved in the water. The smell is the
result of four factors which must all be present for the odor to
develop:
• a concentration of sulfate in the supply water.
• little or no dissolved oxygen in the water.
• a sulfate reducing bacteria within the water heater. (This
harmless bacteria is non-toxic to humans.)
• an excess of active hydrogen in the tank. This is caused by
the corrosion protective action of the anode.
Smelly water may be eliminated or reduced in some water
heater models by replacing the anode(s) with one of tess active
material, and then chlorinating the water heater tank and all
hot water lines. Contact Sears Service for further information
concerning this chlorination treatment and an anode replacement
kit #9001453005. (For short heaters, use anode replacement
kit #9006299005.) Anode replacement and chlorination of the
tank are not covered by the water heater's limited warranty.
If the smelly water persists after the anode replacement and
chlorination treatment, it may be necessary to chlorinate or
aerate your water supply to eliminate the problem.
Do not remove the anode, leaving the tank unprotected. By
doing so, all warranty on the water heater tank is voided.
"AIR" In Hot Water Faucets
Explosion Hazard
• Flammable hydrogen
gases may be present.
• Keep all ignition sources
away from faucet when
turning on hot water.
36
HYDROGEN GAS: Hydrogen gas can be produced in a hot water
system that has not been used for a long period of time (generally
two weeks or more). Hydrogen gas is extremely flammable and
explosive. To prevent the possibility of injury under these conditions,
we recommend the hot water faucet, located farthest away, be
opened for several minutes before any electrical appliances which are
connected to the hot water system are used (such as a dishwasher
or washing machine). If hydrogen gas is present, there will probably
be an unusual sound similar to air escaping through the pipe as the
hot water faucet is opened. There must be no smoking or open flame
near the faucet at the time it is open.
Safety Shut-off and Thermal Switch
This water heater is designed to automatically shut-off in
the event of the following:
The pilot flame isextinguished for any reason.
1,
2.
The water temperature exceeds 189°F (87°C) for 155°F
models or 199°F (93°C) for 180°F models. See the data
plate for your model.
3. Excessive combustion chamber temperatures.
4. The ignition of flammable vapors.
A thermopite is used to determine if a pilot flame is present,
and wilt shut off the gas supply to the main burner and the
pilot if the flame is absent. This unit is also equipped with a
thermal switch, designed to shut off the gas supply in the event
the heater has been exposed to flammable vapors (spilled
gasoline or paint fumes, for example), poor combustion caused
by insufficient combustion air, or improper venting. If the switch
opens, check the flame arrestor for signs of high temperature
(blue or black discoloration), and inspect your installation for
any problems with venting or combustion air. (See Pilot Light
Troubleshooting Flowchart). Reset the switch by depressing
the small button in the center of the switch.
IMPORTANT: Correct any issues prior to resetting the switch.
Contact Sears at 1-800-4-MY-HOME (1-800-469-4663) to
request service.
The gas control valve\thermostat includes a temperature
limiting ECO (Energy Cut Off) system that wilt shut off the water
heater if the water temperature exceeds 189°F (87°C) for 155°F
models or 199°F (93°C) for 180°F models. See the data plate
for your model.
Should the water temperature get too high, the diagnostic
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