Kenmore 153.331020, 153.331050 Owner's Manual

Owner's Manual

THERMAL EXPANSION

TANK

FOR POTABLE WATER USE ONLY

MODEL NO.

153.331020 2 Gal.

153.331050 5 Gal.

Thank You for purchasing a Kenmore Thermal Expansion Tank.
Properly installed and maintained, it should give you years of
trouble free service. If you want this expansion tank
professionally installed by Sears contact your Salesperson.
They wilt arrange for prompt, quality installation by Sears

authorized contractors.

• Safety instructions

• Installation

• Maintenance

Read and understand manual and
safety messages before installing,

operating or servicing this thermal
expansion tank.

Failure to follow instructions and
safety messages could result in

death or serious injury,

Sears, Roebuck and Co,, Hoffman Estates, IL 60179 U,S,A

PRINTED IN THE U.S.A. 0506 www.sears.com PART NO. 205703-000

SAVE THiS MANUAL FOR FUTURE REFERENCE.

Yoursafetyandthesafetyofothersis extremely important in the installation, use and servicing of this expansion tank.

Many safety-related messages and instructions have been provided in this manual and on your own expansion tank to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual, it is very important

that the meaning of each safety message is understood by you and others who install, use or service this
expansion tank.

All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message and
how to avoid the risk of injury.

This is the safety alert symbol, it is used to alert you to

potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injuryor death.

WARNING indicates a potentially hazardous
situation which, if not avoided, could result

in injuryor death.

CAUTION indicates a potentially hazardous

situation which, if not avoided, may resultin
minor or moderate injury.

IMPORTANT DEFINITION:

• Qualified Installer: A qualified installer must have ability equivalent to a licensed tradesman in the field of plumbing and have a thorough
understanding of the applicable local plumbing codes.

Read and understand manual and
safety messages before installing,

operating or servicing this thermal
expansiontank.

Failure to follow instructions and

safety messages could result in
death or serious injury.

improper installation and use may be hazardous and

can result in property damage.

, Install inaccordance with local codes.

Refer to manual for instruction and service.

_losion Hazard

• Temperature-pressure relief
valve must comply with ANSI

Z21.22 and ASME code.

• Overheated water can cause
water tankexplosion.

• Properly sized temperature
and pressure relief valve

must be installed in opening
provided.

• Failure to follow these

instructions could result in

death or serious injury.

, Burn hazard.

• Hot water discharge.

• Keep clear of relief valve
discharge outlet.

SAFEINSTALLATIONUSEANDSERVICE...........................................2

GENERALSAFETY..............................................................................2

TABLEOFCONTENTS.........................................................................3

LOCATINGTHENEWEXPANSIONTANK.............................................5

INSTALLINGTHEEXPANSIONTANK...................................................5

MAINTENANCE....................................................................................6

SPECIFICATIONS..................................................................................3

IMPORTANTINSTRUCTIONSBEFOREINSTALLATION........................4

EXPANSION TANKS FOR WATER HEATERS TANK SPECIFICATIONS

Many local codes require back flow preventers, check valves or non-
reversing meters. Since these devices seal offthe system, an expansion

tank is required to prevent the water heater's relief valve from discharging
on every heating cycle. The Kenmore Thermal Expansion Tanks eliminate

this wasteful, costly and dangerous practice. Kenmore Thermal
Expansion Tanks are designed to be used for potable water storage at

a maximum pressure of 150 psi. DO NOT USEASTANDARD TANK. Use
the sizing chart to determine the correct size expansion tank for your

application.

PURPOSE OF EXPANSION TANKS

When water is heated it expands. Provision must be made for this
expansion in a closed hot water system. This precharged diaphragm

tank stores the expanded hot water then returns water to the system
when the pressure drops.

CAPACITY IN GALLONS 2 5

PRECHARGE PRESSURE IN PSi 38 38

DIMENSIONS "A" 12 3/4" 14 314';

DIMENSIONS "C" 8 3/8 _ 11 318"

DISCHARGE CONNECTION "E" 314" NPTM 3t4" NPTM

WEIGHT 6 LBS. 10.5 LBS.

BACKFLOW

PREVENTER

CO LD WATER

T

EXPANSION

TANK

TO SYSTEM

WATE_

HEATER

'_--- T & P

RELIEF

VALVE

A

EXPANSION TANK SIZING CHART

Assumed 140°F Temp and 150 Max. PSI Pressure.

EXPANSION TANK NEEDED

iNCOMING WATER HEATER CAPACITY (GALLONS)

WATER

PRESSURE 30 40 50 66 80 100 120

40 psi 2GAL 2GAL 2GAL 5GAL 5GAL 5GAL 5GAL

I-- c 4

-I

NOTE: Kenmore Expansion Tanks are pre-charged with a 38 psi air charge. If the inlet water pressure is higher than 38 psi, the expansion tank's
air pressure must be adjusted to match that pressure but must not be higher than 80 psi.

50 psi 2GAL 2GAL 2GAL 5GAL 5GAL 5GAL 5GAL
60 psi 2GAL 2GAL 5GAL 5GAL 5GAL 5GAL 5GAL

70 psi 2GAL 2GAL 5GAL 5GAL 5GAL 5GAL 5GAL
80 psi 2GAL 5GAL 5GAL 5GAL 5GAL 5GAL 5GAL