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WATER HEATER (3)
HnT Pn/rt J COLD WATER PRESSURE
._ _ INLET FITTING REDUCING
r"'--_l_ _...f_-_-_, VALVE WITH
" I II BY-PASS
PRESSURE GAUGE INLET COLD
WATER SHUT-OFF
RECOMMENDED NSTALLAT ON
I I (VERTICAL MOUNTING)
WATER HEATER
COLD WATER
INLET FITTING
FLOOR, CEILING JOIST, ETC.
HOT COLD
(3)
PRESSURE
REDUCING
VALVE WITH
(1) BY-PASS
EXPANSION /
TANK
PRESSURE GAUGE INLET COLD
WATER SHUT-OFF
ALTERNATE RECOMMENDED INSTALLATION
(HORIZONTAL MOUNTING)
Figure 54
Property Damage Hazard
Strange Sounds
Possible noises due to expansion and contraction
of some metal parts during periods of heat-up and
cool-down do not necessarily represent harmful or
dangerous conditions.
Condensation causes sizzling and popping
within the burner area during heating and cooling
periods and should be considered normal. See
"Condensate" section in this manual.
Operational Conditions
Smelly Water
Each water heater contains at least one anode
rod 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" in the hot water. The smell is a result of
four factors which must all be present for the odor
to develop:
a. A concentration of sulfate in the supply water.
b. Little or no dissolved oxygen in the water.
c. A sulfate reducing bacteria which has
accumulated within the water heater (this
harmless bacteria is nontoxic to humans).
d. An excess of active hydrogen in the tank. This is
caused by the corrosion protective action of the
anode.
• Avoid water heater damage.
• Install thermal expansion tank if necessary,
• Do not apply heat to cold water inlet.
• Contact qualified installer or service agency.
A properly-sized thermal expansion tank should
be installed on all closed systems to control the
harmful effects of thermal expansion. Contact a
plumbing service agency or your retail supplier
regarding the installation of a thermal expansion
tank.
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.
Smelly water may be eliminated or reduced in some
water heater models by replacing the anode(s) with
one of less active material, and then chlorinating
the water heater tank and all water lines. Contact
Sears Service for further information concerning
this chlorination treatment and an anode
replacement kit #9001453. 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, we can only suggest that
chlorination or aeration of the water supply be
considered to eliminate the water problem.
NOTE: This anode rod may reduce but not
eliminate water odor problems. The water supply
system may require special filtration equipment
from a water conditioning company to successfully
eliminate all water odor problems.
Do not remove the anode leaving the tank
unprotected. By doing so, all warranty on the
water heater tank is voided.
55
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