Troubleshooting Guide; Start Up Conditions; Thermal Expansion; Strange Sounds - Kenmore The economizer 5 Gas water heater 153.333831 Owner's Manual

Troubleshooting Guide
Start Up Conditions
THERMAL EXPANSION
Water supply systems may, because of such events as high line
pressure, frequent cut-offs, the effects of water hammer kmong
others, have installed devices such as pressure reducing valves,
check valves, back flowpreventers, 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 (ther-
mal expansion) and closed systems do not allow for the expan-
sion of heated water.
The water within the water heater tank expands as it is heated and
increases the pre,ssure of the water system. If the relieving point of
the water heater s temperature-pressure relief valve is reached, the
valve will relieve the excesspressure. The temperamr_pressure
relief valve is not intendedfor the constant relief of thermal
expansion. This is an unacceptable condition and must be cor-
rected.
It is recommended that any devices installed which could create a
closed system have a by-pass and/or the system have an expan-
sion tank to relieve the pressure built by thermal expansion.
Thermal expansion tanks are available fi'om 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
Model Tank Capacity [ Dimensions in Inches Pipe Fitting
Number In Gallons _ Length On Tank
153.331020 2 8 inches 12_inches _" Male
153.331050 5 11 inches 14_inches _" Male
HOT
COLD WATERHEATER
COLDWATER
INLETFITTING
(0
TANK
WATER HEATER
COLD WATER
INLET FITTING
HOT COLD
o)
PRESSURE
REDUCING
VALVE WITH
B_tPASS
PRESSURE G AUGE
WATER
SHUTOFF
RECOMMENDED INSTALLATION
(VERTICAL MOUNTING)
FLOOR, C EILING
JOIST, ETC.
STRAPPING
(0
EXPANSION
O)
PRESSURE INLETCOLD
REDUCING WATER
VALVE WITH SHUTOFF
SY*ASS _
Expansion Tank Sizing Chart
l Inlet*
lWater
Pressure
ExpansiOnTank i 40psipsi
Capacity 150psi
Needed i 60psi
70psi
80psi
Water Heater Capacity (Gallons)
i
I
I
30 4O
2 2
2 2
2 2
2 2
2 5
50
2
2
5
5
5 I
66 82
5 5
5 5
5 5
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.
(2)
PRESSURE GAUGE
ALTERNATE RECOMMENDED
INSTALLATION
(HORIZONTAL MOUNTING)
STRANGE SOUNDS
Possible noises due to expansion and contraction of some metal
Darts during periods of heat-up and cool-down do nor represent
narmful or dangerous conditions.
Condensation causes sizzling and popping with the burner area
during heating and cooling, periods and should be considered
normal. See Condensation section.
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