Start Up Conditions; Thermal Expansion; Strange Sounds; Operational Conditions - Kenmore 153.586320 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 regarding the installation of a thermal expansion tank.
Table 2: Thermal Expansion Tank Specifications
Tank Dimensions
Model Capacity in Inches
Number In Gallons Diameter Len£1th
153.331021 2 8 (203 mm) 12-3/4 (323 mm)
153,331051 5 11 (279 ram) 14-3/4 (375 ram)
Table 3: Expansion Tank Sizing Chart
Pipe
Fitting
On Tank
3/4" Male
3/4" Male
Expansion
Tank
Capacity
Needed
Inlet*
Water
Pressure
40 psi
50 psi
60 psi
70 psi
80 psi
Water Heater Capacity (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
*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.
INCH T
MAXIMUM AIR GAP_
!
HOT COLD
COLD WATER PRESSURE
INLET FITTING REDUCING
VALVE WITH
BY-PASS
EXPANSION _ /
WATER
SHUTOFF
RECOMMENDED INSTALLATION
(VERTICAL MOUNTING)
WATER HEATER FLOOR, CEILING
COLD WATER JOIST, ETC.
INLET FITTING
HOT COLD STRAPPING
6 INCH
PRESSURE
REDUCING INLET COLD
VALVE WITH WATER
EXPANSION BY=PASS SHUTOFF
TANK /__
PRESSURE GAUGE
ALTERNATE RECOMMENDED
_TI i INSTALLATION
(HORIZONTAL MOUNTING)
FIGURE 32.
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
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.
Smelly water may be eliminated or reduced in some water heater
models by replacing the anode rod (s) with one of tess active
material, and then chlorinating the water heater tank and all hot
water lines. Contact the local Sears Service Center for further
information concerning an Anode Replacement Kit #9001453
and this Chlorination Treatment. 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; then you should consider chlorinating or
aerating your water supply.
22