Troubleshooting Guide; Start Up Conditions; Thermal Expansion; Strange Sounds - Kenmore 153.321344 Use & Care Manual

Start Up Conditions
THERMAL EXPANSION
Property Damage Hazard
• Avoid water heater damage.
• Install thermal expansion tank or device if necessary.
• Contact qualified installer or service agency.
As water is heated, it expands (thermal expansion). In a closed
system, the volume of water will increase. As the volume of
water increases, there will be a corresponding increase in water
pressure due to thermal expansion. Thermal expansion can
cause premature tank failure (leakage). This type of failure is not
covered under the limited warranty. Thermal expansion can also
cause intermittent temperature-pressure relief valve operation:
water discharged from the valve due to excessive pressure build
up. The temperature-pressure relief valve is not intended for the
constant relief of thermal expansion. This condition is not covered
under the limited warranty.
A properly-sized thermal expansion tank should be installed
on all closed systems to control the harmful effects of thermal
expansion. Thermal expansion tanks are available from Sears
stores and through the Sears Service Centers. Contact the local
plumbing inspector, water supplier and/or the Sears Service
Center for assistance in controlling these situations.
Thermal Expansion Tank Specifications
TABLE 2.
Model
Number
153.331021
153.331051
Tank Dimensions Pipe
Capacity in Inches Fitting
In Gallons Diameter Length On Tank
2 8 (203 mm) 12-3/4(323 mm) 3/4" Male
5 11 (279 mm) 14-3/4 (375 mm) 3/4" Male
Expansion Tank Sizing Chart
WATER HEATER (3)
HOT COLD/ COLD WATER PRESSURE
r....--_-. {_- -_,._ INLET FITTING REDUCING
VALVE WITH
BY-PASS
I I
(2)
PRESSURE GAUGE INLET COLD
WATER SHUT-OFF
RECOMMENDED INSTALLATION
(VERTICAL MOUNTING)
WATER HEATER
COLD WATER
INLET FITTING
FLOOR, CEILING JOIST, ETC,
HOT COLD
I I
(3)
PRESSURE
REDUCING
VALVE WITH
(1) BY-PASS
EXPANSION /
/ t
PRESSURE GAUGE-- INLET COLD
WATER SHUT-OFF
ALTERNATE RECOMMENDED INSTALLATION
(HORIZONTAL MOUNTING)
FIGURE 43.
STRANGE SOUNDS
Possible noises due to expansion and contraction of some
metal parts during periods of heat-up and cool-down do not
represent harmful or dangerous conditions.
Operational Conditions
SMELLY WATER
TABLE 3.
Expansion
Tank
Capacity
Needed
Inlet
Water
WaterHeaterCapaci_ (Gallons)
30 40 50 66 82
2 2 2 5 5
2 2 2 5 5
2 2 5 5 5
2 2 5 5 5
2 5 5 5 5
Pressure
40psi
50psi
60psi
70psi
80psi
*Highest recorded inlet water pressure in a 24 hour period or
regulated water pressure.
NOTE: Expansion tanks are pre-charged with a 40 psi air
charge. If the inlet water pressure is higher than 40 psi, the
expansion tank's air pressure must be adjusted to match
that pressure, but must not be higher than 80 psi.
In each glass-lined water heater there is installed one anode
rod (see parts section) for corrosion protection of the tank.
Certain water conditions wilt 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. A concentration of sulfate in the supply water.
B. Little or no dissolved oxygen in the water.
C. A sulfate reducing bacteria within the water heater. (This
harmless bacteria is non-toxic to humans.)
D. An excess of active hydrogen in the tank. This is caused by
corrosion protective action of the anode.
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