Temperature-Pressure Relief Valve, Drain

Installation Instructions (cont'd)

Temperature-Pressure

Relief Valve

&WARNING

At the time of manufacture this water heater was provided with a combination temperature-pressures relief valve certi- fied by a nationally recognized testing laboratory that main- tains 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 current edition of ANSI Z21.22 • CSA 4.4 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, CSA 4.4 by a nationally recognized testing laboratory that maintains periodic inspection of pro-

&WARNING

The temperature-pressure relief valve must be manually operated at least once a year. Caution should be taken to ensure that (I) no one is in front of or around the outlet

of the temperature-pressure relief valve discharge line, and (2) the water manually discharged 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 completely reset and continues to release water, immediately, close the cold water inlet to the water heater, follow the drain- ing instructions, and replace the temperature-pressure relief valve with a new one.

VALVE

duction of listed equipment or materials.

The valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater (150 Ibs./sq. in.) and a discharge capacity not less than the water heater input rate as shown on the model rating plate. (Electric heaters, watts divided by 1000 x 3412 equal BTU/Hr. rate.)

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

Z21.22 0 CSA 4.4 and ASME, may require a valve model dif- ferent from the one furnished with the water heater.

Compliance with such local requirements must be satisfied by the installer or end user of the water heater with a locally )rescribed temperature-pressure relief valve installed in the designated opening in the water heater in place of the facto- ry furnished valve.

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

._(

HOT

COLD

LIRE-PRESSURE RELIEF VALVE

DISCHARGE PIPE

(Do not cap or

plug. Provide a 6" air gap between pipe and drain.)

The temperature-pressure relief valve must be installed directly into the fitting of the water heater designated for the relief valve. Position the valve downward and provide tubing so that any discharge will exit only within 6 inches above, or at any distance below the structural floor. Be cer- tain that no contact is made with any live electrical part. The discharge opening must not be blocked or reduced in

size under any circumstances. Excessive length, over 30 feet, or use of more than four elbows can cause restriction and

reduce the discharge capacity of the valve.

No valve or other obstruction is to be placed between the relief valve and the tank. Do not connect tubing directly to discharge drain unless a 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 discharge pipe is not connected to a drain or other suitable means, the water flow may cause property damage.

The Discharge Pipe:

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

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

Must not be plugged or blocked.

Must be of material listed for hot water distribution.

Must be installed so as to allow complete drainage of both the temperature-pressure relief valve, and the dis- charge pipe.

Must terminate at an adequate drain.

Must not have any valve between the relief valve and tank.

.FLOOR

DRAIN

WARNING "RELIEF VALVE OPENING"

11dewatel beater is prowbed w_ha ¢0mb[natbnT_l_lp6emtule_PressureRelbf Valvelisiod as coEy_01y[nlgw / the sbe'dafdfor ReliefValves a'tlA_lomatb Gas Shddl Oevicestor HotWaterS®#y System& AN$ Z2122

aid tie coderedei_le_Ls of ASME

Your10caJiu_odictmn_Jauthe(_y,while nland_ng tie use of a Temp_ature-Pmssure ReliefValvecomplying _ith AN8Z2122 and ASME,mayrequirea valvemodeld_ferentflora the one _rnisbed withthe watelheater

Com_ian_ withSUChIoca_requile_'_r_musthe satisfiedby the ins[aHerel end user of tie watel beaterwith a locally prescribed TemberaIure,PiessureRelief VaJveinstaJlodin t_ desighated ®ening in the water heater

•Ifa shoIt shank (less lhan 2") temperature*pressure relief ValVeis to be inslalled (as shown), a nipple and co®ling must be Used

•If a long shank (2" or brger) is to be installed, de not use the nipple and co®ling

'Insta_Ter®eralure_Pressule protec_veeq_pment redeirodby IocaJcodes, bL4notless thai a combina* lien Temper atule.Presst_reRelief V_lve certified as meeting Ibe redeilements for Relief Valves and AulomaticGas $betdf Deviceslor Hot-WalerSubely Systems,ANS Z2122 by _ nadena_lyrecognized test_

_g laboratory tbe_msJntainsperiodb in_on

Of production of listed edeipment or matelbJs The valve

must be ortentod,j3iowbedw_thtub_rg,el otbervaseinstsJlodso _at d_scharge•caq ex_•only _thin_6 inches above, orat any dlstaqcebelowthe stfuctt_ra f_oor,aod c_{_ot cont_ any I_veelectnca_part¸

Fol safe®elation of _ waterbealel, _e R_l_efVahtemust not be removedel _YULqge_J

See manual heading * 'Ternbetature*Pressule Relod V_]ve'rfor ins®laden and maintenanceof Relief Valve, dmcbergepipeard othersafely preeautJ®s