Installation Instructions (cont'd)
Temperature-Pressure Relief Valve
_,WARNING
At the time of manufacture this water heater was provided with a
AutomaticGasShutoffDevicesfor Mot Water SupplySystems, and the latest edition of ANSI Z21.22 and the code require-
ments of ASME.If replaced, the valvemust meet the require- ments of localcodes,but not lessthan a combinationtempera- tore and pressurerelief valvecertifiedas meeting the require- mentsfor ReliefValvesand Automatic GasShutoffDevicesfor
Hot Water SupplySystems,ANSI Z21.22 bya nationallyrecog- nized testinglaboratorythat maintainsperiodicinspectionof productionof listedequipmentor materials.
The valvemust be markedwith a maximum set pressurenot to exceed the marked hydrostaticworking pressureof the water heater (150 Ibsdsqin. .) and a dischargecapacitynot less than the water heater input rate as shownon the modelrating plate. (Electric heaters - watts dividedby 1000x 3415 equal : BTU/Hr. rate.)
Yourlocaljurisdictionalauthority,while mandatingthe useofa
AWARNING
The
If after manually operating the valve, it fails to completely reset and continuesto releasewater, immediately closethe
cold water inlet to the water heater, follow the draining instructions, and replace the
and ASME, may require a valvemodeldifferentfrom the one furnishedwith the water heater.
Compliancewith suchlocalrequirements must be satisfiedby the installeror end userof the water heater with a locallypre-
For safeoperationofthe water heater,the relief valvemustnot be removed from it'sdesignatedopeningor plugged.
The
No valveor otherobstructionisto be placedbetweenthe relief valveand the tank. Do not connecttubingdirectlyto discharge drainunlessa 6"air gapisprovidedTopreventbodilyiniury,. haz- ard to life,or propertydamage,the relief valvemustbe allowed
HOT
/
RELIEEVALVE
DISCHARGE PIPE
(Do not cap or plug)
PROVIDE A 6" AIR GAP BETWEEN THE
END OF THE
DISCHARGE PIPE AND D_IN
to dischargewaterin quantitiesshouldcircumstancesdemand.If the dischargepipeisnot connectedto a drain or other suitable means,the waterflowmaycausepropertydamage.
The DischargePipe:
Must not be smallerin sizethan the outlet pipe sizeof the valve,or haveany reducingcouplingsor other restrictions.
Mustnot be pluggedor blocked.
Mustbe ofmateriallistedfor hot water distribution.
•Must be installedso as to allowcomplete drainageof both the
•Mustterminate at anadequatedrain.
•Mustnot haveany valvebetweenthe relief valveandtank.
RELIEFVALVE OPENING
A[ the time of manufacture, this water heater was provided with a combination tem-
Your local jurisdictional authority, while mandating the use of a
Compliance with such local requirements must be satisfied by the installer or end user of the water heater with a locally
See manual heading
13