Maytag HE31240S tank, Instructions for Installation contd, Temperature-PressureRelief Valve

Instructions for Installation (cont'd)

Temperature-Pressure Relief Valve

•,WARNING

At the time of manufacture this water heater was provid- ed with a combination temperature-pressuresrelief valve certified by a nationally recognizedtesting laboratory that maintains periodic inspectton of production of listed equipment or materials, as meeting the requirements for

Relief Valves and Automatic Gas Shutoff Devicesfor Hot Water Supply Systems. and the latest edition of ANSI Z21.22 and the code requirements of ASME. If replaced. the valve must meet the requirements of local codes, but not less than a combination temperature and pressure

relief valve certified as meeting the requirements for Relief Valves and Automatic Gas Shutoff Devicesfor Hot

Water Supply Systems.ANSI Z21.22 by a nationally recog-

of production of listed equipment or materials.

The valve must be marked with a maximum set pressure nizednot totestingexceedthlaboratorye markethatd hydrostaticworkingmaintainsperiodicpressuinspectionreof

the water heater (150 Ibs./sq. in.) and a dischargecapacity not lessthan the water heater input rate as shown on the model rating plate. (Electric heaters - watts divided by

1000 x 3415 equal BTU/Hr.rate.)

Your local jurisdictional authority, while mandating the useof a temperature-pressure relief valve complying with

ANSI Z21.22 and ASME. may require a valve model differ- ent from the one furnished with the water heater.

Compliancewith suchlocal requirements must foesatisfied by the installer or end user of the water heater with a

locally prescribed temperature-pressurerelief valve installed in the designated opening in the water heater in placeof the factory furnished valve.

For safe operation of the water heater, the relief valve must not be removed from it'sdesignated opening or

plugged.

The temperature-pressure relief valve must be installed

directly into the fitting of the water heater designatedfor the relief valve. Positionthe valve downward and provide tubing so that any dischargewill exit only within 6 inches above, or at any distance below the structural floor. Be

certain that no contact is made with any live electrical

partluced. Thein dischargesize under anyopeningcircumstancesmust notExcessivelength,.be blocked or

over 30 feet, or use of more than four elbows can cause restriction and reducethe dischargecapacity of the valve. No valve or other obstruction is to be placed between the

relief valve and the tank. Do not connecttubing directly to discharge drain unless a 6" air gap is provided. To prevent

_, WARNING

The temperature-pressure relief valve must be manu- ally operated at least once a year. Caution should be taken to ensure that (1) no one is in front of or around the outlet of the temperature-pressurorelief valve discharge line. and (2) the water manually dis- charged will not cause any bodily injury or property damage because the water may be extremely hot.

If after manually operating the valve, it fails to com- pletely reset and continues to release water, immedi- ateiy close the cold water inlet to the water heater.

follow the draining instructions, and replace the temperature-pressure relief valve with a new one.

HOT				COLD
)__T				SHUT-OFF
_	"
	_		__
PIPE_		_	_	--PIPE
INSULATION		_		INSULATION
CONDUIT
		I	]
			_ /TEMPERATURE-PRESSURE
				RELIEFVALVE
				¢--DISCHARGEPIPE
				_(Do notcapor plug)
				]

		(	6'_AIRGAP
_	_	_	ml
	FLOODRAIN		r
WARNING	"RELIEF	VALVE OPENING"
T_._ _._o_._T_P_			_v_	._
Ibe sta_ for RelCfVak_s andAutoma_Gasc ShUtOffDevicesforHot WaterSupPlySy_i_s_,_1				22

andlt_codereo_rementsofASME,

bodilyinjury,hazard to life, or property damage, the relief

valve must be allowed to discharge water in quantities

should circumstances demand. If the dischargepipe is not connected to a drain or other suitable means, the water

flow may causeproperty damage.

•Must notbe smaller in size than the outlet pipe size of

the valve, or have any reducing couplings or other The DischargePipe:

restrictions.

•Must not be plugged or blocked.

•Must be of material listedfor hot water distribution.

•iust be installed so as to allow cornplete drainage of both the temperature-pressurerelief valve, and the dis- charge pipe.

•Must terminate at an adequate drain,

•Must not have any valve between the relief valve and

tank,

Yo_ANlocalunsctctSI122 andASME,w aJ maywreqr uirernaraveleUngrnc_usdeCoferentaTerc__turenhe-cPressfurnishedwilhthulReliefVeawIWaterhcomepatelying

Ca loc_arnllypces_iancribedTeri1hsuchrperature-Pressu_arReli_refVaJquv_einsiremalJ dien thentsrbe _hatedopeningigustbes__tis1hewater_edby1be_ta_re

_r	TANK,		%', _" JACKET
	TANK		• l-	BRASS
	FnT_G			COUPLING
VALVE PROBE				TEMPERATURE-
MUST EXTEND				PRESSURE
INTO TANK	i_, _t			RELIEF VALVE
T&P RELIEF
	_i&_		' SHANK
	_	[_ _		_GTH

•If a short shank (Jessthan 2')temperature-pressurereliefvalve is to be instated

(asshown)nippl,a ecouplinga d mustbeused

•if a longs_lank(2" or longer) is to be installed,do not usethe nippleand coupling.

",r,_ mperatuT mperalure.Pressurprotectiveequipmentrequireedby localcodesbem, _t notlessthan a combina-

tion Tee-PressureR lief Valv Cedriiedas m tingthe requ enlSfor Relief Valves and A_o_=_ Gas ShttoffDevicesforHot-Wat0rSupplySystemsAN,_ Z2_22 bya nJt_nallyrecognLzedtest-

mustbec_ented.pmv_edwior0th_etubiseing,nstabeds01exhatdischaonwiiF6incf ecanbes

aboovef ,	ancebdowta dcannstr c tconta ttanyfl,		veei_icalpa,."
For safe0beatanydlstra of thewsle_heater,b_eReliefVaJvmustnotbbe		e lturaJflcoem0ved p ed.
See manual heading- "Ternperatule-Pre_sure Relief Valve"for installabonan_gmeaintenanceof Relief
VaJv_dischargepip,	eandothersafetywecautJ0ns

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