Atwood Mobile Products 4-E Fire AND/OR Explosion, PRESSURE-TEMPERATURE Relief Valve Explosion

8.Push unit against caulking, secure 4-corner brackets (FIG 3-B) to coach with No. 8 - 3/4˝ round head screws (not furnished) or equivalent. Complete the installation by inserting the same type of #8 screws in the holes provided around the flange of the water heater housing. Check all gaskets, they must adhere to the pan creating an air tight seal.

9.Attach access door.

a.Snap hinge pin (FIG 3-C) into clip (FIG 3-D).

b.Slide cover (FIG 3-E) onto hinge pin.

c.Slide hinge pin into cover, snapping into clip at same time (FIG 3-D).

NOTE: To remove hinge pin, support access cover and apply force to corner of hinge pin.

10.Disconnect unit and its individual shut-off valve from gas supply line during any pressure testing of system in excess of 1/2 PSIG (3.4 kPa, 14˝ water column [W.C.]). DO NOT set inlet pressure higher than maximum indicated on rating plate of gas valve (13˝ W.C.). Isolate unit from gas supply line by closing its individual manual shutoff valve during any pressure testing ≤ 1/2 psig.

￿WARNING

FIRE AND/OR EXPLOSION

•DO NOT use matches, candles or other sources of ignition when checking for gas leaks.

11.Turn on gas and check water heater and all connections for gas leaks with leak detecting solution.

12.Fill water heater tank, check all connections for water leaks.

PRESSURE-TEMPERATURE RELIEF VALVE

￿WARNING

EXPLOSION

•Valve is not serviceable, it must be replaced.

•Tampering with valve will result in scalding injury.

•Tampering with valve will void warranty.

•DO NOT place a valve, plug or reducing coupling on outlet part of relief valve.

THIS VALVE IS A SAFETY COMPONENT AND MUST NOT BE REMOVED FOR ANY REASON

OTHER THAN REPLACEMENT. This water heater is equipped with a tempera- ture and pressure relief valve (FIG 3-G) that complies with standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Systems, ANSI Z21.22.

If you use a discharge line, do not use a reducing coupling or other restriction smaller than outlet of relief valve. Allow complete drainage of both valve and line.

FOR REPLACEMENT PARTS:

•DO NOT install anything less than a combination temperature-pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of product of listed equipment or materi- als, as meeting requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22. Valve must have a maximum set pressure not to exceed 150 psi.

•Install valve into opening provided and marked for this purpose on water heater.

•Installation must conform with local codes or in the absence of local codes, American National Standard for Recreational Vehicles, ANSI A119.2/NFPA 50IC.

•For an external electrical source, ground this unit in accordance with National Electrical Code ANSI/NFPA70.

Your ATWOOD PILOT GAS WATER HEATER is now ready for operation.

Continue to HOW TO OPERATE YOUR WATER HEATER

CONSUMER SAFETY WARNINGS

￿WARNING

EXPLOSION OR FIRE

•DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

•Should overheating occur, or gas supply fail to shut off, turn OFF manual gas control valve to appliance, or turn gas OFF at the LP tank. On ELECTRONIC IGNITION MODEL turn operating switch to OFF position and remove red wire from left hand terminal of ECO switch or turn gas OFF at the LP tank.

•Use with LP gas only.

•Shut off gas appliances and pilot lights when refueling.

•On PILOT RELIGHT MODELS, turn off the ignition module when refuel- ing gasoline tanks or LP tanks.

•Turn gas OFF at the LP tank when vehicle is in motion. This disables all gas appliances and pilot lights. Gas appliances must never be operated while vehicle is in motion. Unpredictable wind currents may be created which could cause flame reversal in the burner tube, which could result in fire damage. The thermal cut off fuse could also be unnecessarily activated resulting in a complete shut- down of the water heater requiring replacement of the thermal cut off. See maintenance of electronic ignition water heaters for further explanation of the thermal cut off.

•LP tanks must be filled by a qualified gas supplier only.

HOW TO OPERATE YOUR WATER HEATER

￿CAUTION

FIRE

•Do not smoke or have any flame near an open faucet.

If water heater has not been used for more than two weeks, hydrogen gas may form in water line. Under these conditions to reduce the risk of injury, open hot water faucet for several minutes at kitchen sink before you use any electrical appliance connected to hot water system.

If hydrogen gas is present, you will probably hear sounds like air escaping through the pipe as water begins to flow.

￿WARNING

SCALDING INJURY

•Do not tamper with pilot orifice.

￿CAUTION

PRODUCT FAILURE

• Do not operate without water in tank.

PILOT OPERATION

1.Water heater may be equipped with a White Rodgers® or Robertshaw Unitrol® Control FIG 7.

2.Turn gas control valve knob (FIG 7-B) to OFF position.

3.Wait at least five minutes to allow accumulated gas in burner com- partment to escape.

FOR WHITE RODGERS® CONTROL (FIG 7)

a. Turn lighting control knob (7-B) to PILOT position and hold against stop while lighting pilot burner.

b. Allow pilot to burn thirty seconds then release lighting control knob.

c.Turn lighting control knob (7-B) to ON position.

d.If pilot does not remain lit, repeat operation allowing longer peri- od before releasing lighting control knob.

e.Set temperature selection lever (7-A) at mark between warm and hot position.

f.Close access door.

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