Instructions for Installation contd, Coupling

Instructions for Installation (cont'd)

Temperature-Pressure Relief Valve

•,WARNING	_,WARNING	I
At the time of manufacture this water heater was provid-	The temperature-p_lve	must be manu-

ed with a combination temperature-pressuresrelief valve certified by a nationally recognizedtesting laboratory that

maintains periodic inspection of production of listed

equipment or materials, as meeting the requirements for Relief Valves and Automatic Gas Shutoff Devices for 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 Devices for Hot

Water Supply Systems,ANSI Z21.22 by a nationally recog- nized testing laboratory that maintains periodic inspection of productionof listed equipment or materials.

The valve must be marked with a maximum set pressure not to exceed the marked hydrostaticworking pressureof the water heater (150 Ibs./sq. in.) and a discharge capacity 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 jursdictional authority, while mandating the

use of a temperature-pressurerelief valve complying with ANSI Z21,22 and ASME, may require a valve model differ- ent from the one furnished with the water heater.

Compliance with such localrequirements must be satisfied by the installer or end user of the water heater with a

Iocallyprescribed temperature-pressure relief valve

installed in the designated opening in the water heater in place of the factoryfurnishedvalve.

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 designated for

I 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 part. The discharqe opening must not be blocked or reduced in size und'erany circumstances.Excessivelength, over 30 feet, or use of more than four elbows can cause restrictionand reducethe dischargecapacity of the valve.

No valve or other obstructionis to be placed between the

relief valve and the tank. Do not connecttubing directly to dischargedrain unlessa 6" air gap is provided. To prevent

bodily injury, 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 cause property damage.

•Must not be smaller in size than the outlet pipe size of

the valve, or have any reducing couplings or other restrictions.

•Must not be plugged or blocked.

•Must be of material listedfor hot water distribution.

•Must be installed so as to allow complete 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.

ally operated at least once a year. Caution should be I taken to ensure that (1) no one is in front of or I

around the outlet of the temperature-pressure relief valve discharge line, and (2) the water manually dis- I 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- ately close the cold water inlet to the water heater, follow the draining instructions, and replace the temperature-pressure relief valve with a new one.

HOTOLD

_ _ [_

,___'_ . r,_

CONDUIT/

(_PRESSURE

RELIEFVALVE

__L _TEMDISCHARGEPER TURE" PIPE

III _ (Do not capor plug)

r.-.--t_=

IRGAP

V4ARNING "RELIEF VALVE OPENING"

_==_=d_V ,0__A*_O__=.GonTe,.SH=W=u_.S_S_R,e,kV_'N=I__.'*=_=*__ ,_o_, _¢_A,_fQE.

Your _:alc°°ejul_de_Joiledty, whilemandal_gfile useof a Temperaturs_essareRsl_efWivecomping

_hANBZ21_2andASME.ma_qureavalvem0eqldhf_'e_tl_nthe0n

c_=_,_=_,_,_,,_,_,_

a locallypre_ Temperature-PressureReliefValve installedn 1hedesign_teqopeningin the water

_"_	TANK ;1' /_,h !:		JACKET
	TANK ;1' /_,h !:		JACKET
	TANK	/- .	BRASS
	F._ G		COUPLING
VALVE PROBE			TEMPERATURE-
MUST EXTEND			PRESSURE
INTO TANK	=		RELIEF VALVE
	_RA_B		S_

•_f a short shank (/e=,,sthan 2"1 temperature-pressurereliefvaJveis to be instalisd

I_eshown),anippleandcouplingmustbeused

• Ifalongshank(2'orfo_jer)isdotobeinstuset_bellbenip,p_eandcoupling.

"ln_l Temper_re-Pressureprotec_eequipmentreq0iredby k_*a]codes,butnotle= I_ s combina- tion Temperature-PressureReliefValve ced_aif d as meetingthe requirementsfor ReliefValves and

AutomeGasShutoflc .DevcesforBet-WatBueSyrsteAmsNZ2S,1,byana22_JonarecogbytestNzeq-

_g is_oratpffthat men_m _I_ inseq_onP_p_ offinal equipmentor marian, Thevafw

_beo.nt_,_o_deq_,,_,_o_,_,_=_s_g,=_o_ly_al_h.

Forsais opera,on f thewat rheater, RdiefValve nust be emoved0rplu

shove,0ratan_distancebdowtheandcaralmcturalfloor,0tconta tanyliveked/icdparL"

See manual heading- "Temperature*PressureReliefValve'for inst_llationPe_l_d_int_arce of Relief Valve+ddsd_agepipeandothersafet_precau_ons