Kenmore 153.327865 Troubleshooting Guide, Mode,T t C oTDtymens ou1IinInohespeF ttiog, 53.33 o5o1

Troubleshooting Guide

Start Up Conditions

THERHAL

EXPANSION

HOT

COLD

WATER HEATER

0)

COLD WATER

Water supply systems may, because of such events as high

line

PRESSURE

;ITTtNG

REDUCING

pressure,

frequent

cut-offs, the effects of water

hammer

among

VALVE WITH

others, have

installed

devines such

as pressure

reducing

vales,

BY-PASS

check valves, back flowpreventers, e_c ._tocontrol these types of

problems. When these devices are not equipped with an internal

by-pass, and no other measures _e 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.

(z)

The water

within

the

water heater

tank expands

as it is heated

and

PRESSUREGAUGE

increases

the

pressure

of the water

system,

tf the

relieving point

of

WATER

the water

heater s

temperature-pressure

relief valve "s reached, the

SHUTOFF

valve will relieve the excesspressure.

The

temperatttre-pressure

RECOHHENDED

INSTALLATION

relief valve

is not

intendedfor

the

constant

relief of thermal

(VERTICAL HOUNTING)

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 andtor the system have an expan- sion tank 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.

Thermal Expansion Tank Specifications

	WATER HEATER	FLOOR, CEILING
	COLD WATER	JOIST, ETC.
	INLET FITTING
HOT	_ COLD
		STRAPHNG

Mode,T t C; oTDtymens ou1I'inInohespeF ttiog				Ill	PRESSURE
Number	Diameter	___Length j	On Tank	I	0)
				I1Ii /	REDUCINGINLETCOLD
153o331020 1 2	8inches	t2_inches /	_"Male		VALVE WITH	WATER
				(I)	BY-PASS	SHUTOFF
_53.33_o5o1	_ _oches[_4_nchosI _"M_e
				EXPANSION '_		!

TANK

Expansion	Tank	Sizing	Chart
	Inlet*	Water Heater Capacity					(Gallons)
	_rater
Expansion	Pressure	30	40		50	[[	66	82
	40psi	2	2		2	[	5		5
Tank
Capacity	50p,....	2			2	I	5		5
Needed	60psi	2	2	[	5	[	5		5
	70psi	2	2		5	I	5		5
	80p_	t 2 I 5 t			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

(2)

PRESSUREGAUGE

ALTERNATE RECOHHENDED

iNSTALLATiON

(HORIZONTAL HOUNTING)

STRANGE SOUNDS

Possible noises due to expansion and contraction of some metal parts during periods of heat-up and cool-down do not represent harmfiil or dangerous conditions.

charge. If the inlet water pressure is higher than 40 psi, the expansion tanks air pressure must be adjusted to match that

pressure, but must not be higher than 80 psi.

21