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Installation Instructions (cont'd)
Temperatu re- Pressure
Relief Valve
_I, WARNING
At the time of manufacture th;swater heaterwasprev;ded
with a combinationtemperaturo-pressurosreliefvalvecer-
tified by a nationally recognized testing laboratory that
maintainsperiodic_nspectlonofproductionof listedequip-
ment or nnateHais,as meeting the requ_remantsfor Relief
Valvesand Automatic GasShutoff Devicesfor Hot Water
SupplySystems, and the current ed_tlonof ANSI Z21.22 •
CSA 4.4 and the coderequirements of ASME, If replaced,
the valve must meet the requirements of localcodes,but
not lessthan a €omb;nation temperature and pressure
relief valvece_t;fiedasmeet;ng the requ;romentsfor Relief
Valvesand Automatic GasShutoff Devicesfor Hot Water
SupplySystems,ANSI Z21.22 • CSA 4.4 by a natlonaily rec-
ogn;zedtest;ng laboratory that ma;nt_Jns peried;€ iespec-
t;on of productlonof listedequipmentor materials.
The valve must be marked wlth a maximum set pressure
not to exceedthe nna_kedhydrostati€worklngpressureof
the water heater (150 Ibsdsq,_n,)and a d_sch_mgeCal_€_ty
not lessthan the water heater _nput rate as shownon the
model rating plate. (Electric heaters, watts divided by
1000x 3412equalBTUIHr, rote,)
Your localjurisdictionala_tberity, while mandatingthe use
of a temperature-pressure relief valvecomplyingwith ANSI
Z21,22 • CSA 4,4 andASME, may reqmrea valvemodeldif-
ferent from theone furnishedwith the water heater.
Compl;ancewith suchlocalrequirementsmust be satlsfied
by the installer or end user of the water heater w;th a
locally prescribed temperature.pressure relief valve
;nstelled ;n the deslgnatedopeningin the water heater ;n
)laceofthe f_tory furnishedvalve,
Forsafeoperationofthe water heater,the relief valvemust
not beremoved from it'sdesignatedopeningor plugged,
The temperaturo.pressuro rel;ef valve must be installed
directly ;nte the fitt;ng of the water heater des;gnatedfor
the relief valve. Pos_tlonthe valve downwardand provMe
tubing sothat any d;sch_urgew;ll exit onlywith;n 6 inches
above,or at anydistencebelow the struttu_d floor,Becer-
teln that no contact is made with any I_veelectrical
The d_sch_mgeopeningmust not be blockedor reduced_n
s_zeunder any cireumstances, Excessivelength, over 30
feet, or useof more than four elbowscancauserestriction
and reducethe d_sch_urgecap_city of thevalve.
No valveor other obsttuct]on_sto be placedbetween the
relief valveand the tanl_ D_onotconnecttubing d_rocdyto
dischargedra_nunlessa 6 a_rgap _sprovided,To prevent
bed_ly_njury,h_urd to llfe,or propertyd_umage,the relief
valve must be allowed to discharge water _n quantities
should€_rcunnst_ncesdemand. If the dischargep_peisnot
connected to a drain or other su_teble means, the water
flow may causepropertydamage.
The D_sch_urgePipe:
• Must not be smaller in s_zethan the outlet pipesize of
the valve, or have any reducing couplings or other
restHttions,
• Mustnot be pluggedor blocked,
• Mustbeof nnateHaiI_stedfor hotwater distribution,
• Must be installedso as to allow complete drainage of
boththe temperature-pressure reliefvalve, and the d_s-
chargepipe,
• Mustterminate at anadequatedra_n,
• Must not haveany valve between the relTefvalve and
tenl_
_t, WARNING
The temperature-pressure reNef valve must be manually
operated at leastonce a year, Caution shouldbetaken to
ensurethat (I) no one is _nfront of or around the outlet
of the temperatero.pressuro relief valve d_schargeline,
and (2) the water manually dischargedwill not cause any
bed_ly_niury or property damage becausethe water may
beextremely hot.
If after manually operating the valve, it failsto completely
reset and continuesto release water, immediately, close
the coldwater inlet to the water heater, follow the dra_n-
_n.ginstructions, and replace the temperature.pressure
rehef valvew=thanew one,
HOT
HOT
COLD
PRESSURE
RELIEF VALVE
(Do noc caporplug)
0
FLOOR DRAIN •
6_ AIR GAP
WARNING "RELIEF VALVE OPENING"
J_,_KE7
i
_IZMPE_TURE-
IPBE_URE
REUEFVALVE
NIPPLE
T&PBELIEF
VALVE PR(._E
UUS_ E_TEND
[NTOTANK
_ hl_l h,_di[l_ - "T_mp_l_l_-Pr_r_ Ft_li_fV_I¢,__ _l i[1_'_11_Ii__M I_i_l_tl_ ¢_R_[_
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