Kenmore 33176 Installation Guide download pdf (Page 25)

START UP CONDITIONS



Water supply system may, because of such events as high line

pressure, frequent cut-offs, and the effects of water hammer have

installed devices such as pressure reducing valves, check valves,

back ow preventers, etc., to control these types of problems.

When these devices are not equipped with an internal by-pass,

and no other measures are taken, the devices cause the water

system to be closed. As water is heated, it expands (thermal

expansion) and closed systems do not allow for the expansion

of heated water.

The water within the water heater tank expands as it is heated

and increases the pressure of the water system. If the relieving

point of water heater’s temperature-pressure relief valve is

reached, the valve will relieve the excess pressure. The

temperature-pressure relief valve is not intended for the

 This is an unacceptable

condition and must be corrected.

It is recommended that any devices installed which could create

a closed system have a by-pass and/or the system have an

expansion tank or device to relieve the pressure built by 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, see Figure

26 and Figure 26 A.

FIGURE 26.

FIGURE 26A.



Tank Dimensions Pipe

Model Capacity

in Inches Fitting

Number In Gallons Diameter Length On Tank

153.331051 5 11 (279 mm) 14-3/4 (375 mm) 3/4” Male



charge. If the inlet water pressure is higher than 40 psi, the



that pressure, but must not be higher than 80 psi.

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.

Condensation causes sizzling and popping within the burner area

during heating and cooling periods and should be considered

normal. See Condensation section.

Draft Hood Operation

Check draft hood operation by performing a worst case

depressurization of the building. With all doors and windows

closed, and with all air handling equipment and exhaust fans

operating such as furnaces, clothes dryers, range hoods and

bathroom fans, a match ame should still be drawn into the draft

hood of the water heater with its burner ring. If the ame is not

drawn toward the draft hood, shut off water heater and make

necessary air supply changes to correct.

Condensation

Whenever the water heater is lled with cold water, some

condensate will form while the burner is on. A water heater may

appear to be leaking when in fact the water is condensation.

This usually happens when:

• A new water heater is lled with cold water for the rst time.

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Kenmore 33176 Installation Guide Page 25

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