Installation Instructions

Temperature-Pressure Relief Valve

AWARNING

At the time of manufacture this water heater was provided with a combination temperature-pressures relief valve certified by a nationally recognized testing laboratory that maintain )eriodic inspection of production of listed equipment or mate- rials, 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 require- ments of ASME. If replaced, the valve must meet the require- ments of local codes, but not lessthan a combination tempera-

ture and pressure relief valve certified as meeting the require- ments for Relief Valves and Automatic Gas Shutoff Devicesfor

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

The valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of thq 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 3415 equal BTU/Hr. rate.)

Your local jurisdictional authority, while mandating the use of a temperature-pressure relief valve complying with ANSI Z21.22

and ASME, may require a valve model different 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 pre- scribed temperature-pressure relief valve installed in the desig-

nated opening in the water heater in place of the factory fur- nished valve.

For safe operation of the water heater, the relief valve must not be removed from it'sdesignatedopening 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 dis-

charge will 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 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 capacityof 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 unlessa 6" air gapis provided. To prevent bodilyinjury, haz- ard to life, or property damage, the relief valve must be allowed to discharge water in quantities shouldcircumstancesdemand. If the discharge pipe is not connected to a drain or other suitable means, the water flow may causeproperty damage.

The Discharge Pipe:

Must not be smaller in size than the outlet pipe size of the valve, or have any reducing couplingsor other restrictions. 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 discharge pipe.

Must terminate at an adequate drain.

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

(cont'd)

AWARNING

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

HOT

COLD

SHUT OFF

VALVE

PRESSURE

RELIEF VALVE

PIPE (Do not cap or plug)

)_GAP

FLOOR DRAIN

RELIEFVALVEOPENING

At the time of manufacture, this water heater was provided with a combinationtem- perature-pressure relief valve listed as complying with the standard for relief valves and automatic gas shut-off devices for hot water supply systems, ANSI Z21.22. For safe operation of the water heatec the relief valve must not be removed from its des- ignatedpoint of installation or plugged.

Your local iurisdictional authority, while mandating the use of 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

Compliance with such local requirementsmust be satisfied by the installer or end user of the water heater with a locally prescribed temperature-pressure relief valve installed in the designated opening in the water heate_

See manual heading -"Temperature-PressureRelief Valves"for installationand mainte-

nance of relief valve, discharge line, and other safety precauuons