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Removing and Replacing the Gas Control
Valve/Thermostat
Removing the Gas Control Valve/Thermostat:
1. Turn the gas control/temperature knob to the "OFF" position
(Figure 22).
2. Turn off the gas at the manual shut-off valve on the gas
supply pipe (Figure 2).
3. Drain the water heater. Refer to the section on "Draining
and Flushing" and follow the procedure.
4. Disconnect the igniter wire from the igniter lead wire.
Disconnect the temperature sensor wire, then use
needle nose pliers to disconnect the red (+) and white (-)
thermopile wires. Disconnect the pilot tube (7/16" wrench)
and manifold tube (3/4" wrench) at the gas control valve/
thermostat (Figure 25).
5. Refer to "Gas Piping" (Figure 2) and disconnect the ground
joint union in the gas piping. Disconnect the remaining pipe
from the gas control valve/thermostat.
6. To remove the gas control valve/thermostat, thread a
4-inch section of gas pipe into the inlet and use it to turn
the gas control valve/thermostat (counterclockwise.) Do
not use a pipe wrench or equivalent to grip body. Damage
may result. Do not insert any sharp objects into the inlet
or outlet connections. Damage to the gas control valve/
thermostat may result.
Replacing the Gas Control Valve/Thermostat:
To replace the gas control valve/thermostat, reassemble in
reverse order. When replacing the gas control valve/thermostat,
thread a 4-inch section of gas pipe into the inlet and use it to turn
the gas control valve/thermostat (clockwise.) DO NOT OVER
TIGHTEN. Damage may result.
• Be sure to use approved Teflon® tape or pipe joint
compound on the gas piping connections and fitting on the
back of the gas control valve that screws into tank.
• Be sure to remove the pilot ferrule nut from the new gas
control valve/thermostat.
• Turn the gas supply on and check for leaks. Test the water
heater by brushing on an approved noncorrosive leak
detection solution. Bubbles forming indicate a leak. Correct
any leak found.
• Be sure tank is completely filled with water before lighting
and activating the water heater. Follow the "Lighting
Instructions" in the "Operating Instructions" section.
• If additional information is required, contact Sears Service
at: 1-800-4-MY-HOME ® (1-800-469-4663).
®
TEFLON is a registered trademark of E.I. Du Pont De Nemours and Company.
Housekeeping
Vacuum around base of water heater for dust, dirt, and lint on
a regular basis.
Fire and Explosion Hazard
• Do not obstruct _mbustion air
o_nings at the bosom of the
water heater.
Do not use or store flammable
vapor products such as gasoline,
_lvents or adhesives in the
_me room or area near water
heater or other applian_.
• Visibly inspect flame arrestor at
least on_ eve_ six months and
clean if accumula_d Hnt
• Can cause serious injury, or
death
AT LEAST ONCE EVERY SIX MONTHS, AVISUAL INSPECTION
SHOULD BE MADE OF THE FLAME ARRESTOR. CLEAN IF
LINTACCUMULATIONS ARE NOTICED.
INSTALLED IN SUITABLE AREA: To ensure sufficient ventilation
and combustion air supply, proper clearances from the water
heater must be maintained. See Facts to Consider About the
Location section. Combustible materials such as clothing,
cleaning materials, or flammable liquids, etc. must not be placed
against or adjacent to the water heater because they could
catch on fire.
Anode Rod Inspection
Property Damage Hazard
oAvoid water heater damage.
• Inspection and replacement of anode rod required.
The anode rod is used to protect the tank from corrosion. Most
hot water tanks are equipped with an anode rod. The submerged
rod deteriorates to protect the tank. Instead of corroding the tank,
water ions attack and eat away the anode rod. This does not
affect the water's taste or color. The rod must be maintained to
keep the tank in operating condition.
EXPOSED \\ ...............
SUPPORT _L _'_ '_ . _,.,,_i_'&_4T_',,,,2_,_P'{Jl_I'_
WIRE\ '_"_'1"_'# "_ _''_'_ _ _ t'_r'_ _ t" _ _"P_--_A
rlunl\ \\ \\ '_
LilIIIIII_'_'_, __ _.Ce_>._EXPOSED
I IIIIIII1_ _ • ,_SUPPORT
PITTED ANODE ROD _----_ WIRE
FIGURE 32
Anode deterioration depends on water conductivity, not
necessarily water condition. A corroded or pitted anode rod
indicates high water conductivity and should be checked and/
26
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