Kenmore 153.316050, Use & Care Manual

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19
FIGURE 28A.
Anode deterioration depends on the water conductivity, not
necessarily water condition. A corroded or pitted anode rod
indicates high water conductivity and should be checked and/
or replaced more often than an anode rod that appears to be
intact. Replacement of a depleted anode rod can extend the
life of your water heater. Inspection should be conducted by
calling Sears Service Center. At a minimum the anode(s)
should be checked annually after the warranty period.
In replacing the anode:
1. Turn off power to the water heater.
2. Shut off the water supply and open a nearby hot water
.
faucet to depressurize the water tank.
3. Drain approximately 5 gallons of water from tank (see
.
“Draining” section for proper procedures) Close drain
.
valve.
4. Remove the old anode rod.
5. Use Teflon® tape or approved pipe sealant on threads
.
and install new anode rod.
6. Turn on water supply and open a nearby hot water faucet
.
to purge air from water system. Check for any leaks and
.
immediately correct any if found.
7. Restart the water heater as directed in this manual. See
.
the Repair Parts Illustration (page 23, item 16) for anode
.
rod location.
Service
Before calling for repair service, read the “Start Up Conditions”
and “Operational Conditions” found in the Troubleshooting
section of this manual.
If a condition persists or you are uncertain about the operation
of the water heater, let a qualified person check it out.
Contact Sears Repair Services at 1-800-4-MY-HOME
(1-800-469-4663).
TROUBLESHOOTING
Start Up Conditions
THERMAL EXPANSION
As water is heated, it expands (thermal expansion). In a closed
system, the volume of water will grow. As the volume of water
grows, 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 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
Tank Dimensions Pipe
Model Capacity in Inches Fitting
Number In Gallons Diameter Length On Tank
153.331021 2 8 (203 mm) 12-3/4 (323 mm) 3/4” Male
Expansion Tank Sizing Chart
Expansion Inlet* Water Heater Capacity (Gallons)
Tank Water
Capacity Pressure 6 10 20 30
Needed 40-80 psi 2 2 2 2
*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.
See Figure 29 for installation examples.