Jayco 2016 Melbourne Owner's Manual page 115

common methods of winterization used for RV water systems, The compressed air method
or the anti-freeze method. Refer to "Winterization" in this section for details.
Winter Use Device (WUD)
If you wish to operate the water heater in potentially freezing conditions the model GSWH-
1M has a built in thermostat that will start the burner whenever the temperature of the heat
exchanger falls below 38ºF and will automatically shut off when it senses a temperature in
excess of 58 ºF.
IMPORTANT: To allow the WUD device to operate you must have sufficient LP Gas in the
tank and you must leave the unit powered with the ON / OFF switch in the ON position at all
times that freezing may occur. It will not protect the entire RV's plumbing system. The RV
must be designed for winter use/freezing conditions.
Pressure - Temperature Relief Valve
This water heater is equipped with a temperature and pressure relief valve that complies with
the standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Systems,
ANSI Z21.22.
Valve is not serviceable; if defective it must be replaced.
Tampering with valve will result in scalding injury. Do not place a plug
or reducing coupling on outlet part of valve. If you use a discharge line
allow complete drainage for both valve and line.
Tampering with valve will void the warranty.
THIS VALVE IS A SAFETY COMPONENT AND MUST NOT BE REMOVED FOR ANY
REASON OTHER THAN REPLACEMENT.
WHEN REPLACING THE PRESSURE–TEMPERATURE RELIEF VALVE
DO NOT install anything less than a combination pressure–temperature relief valve
certified by a recognized testing laboratory that conducts periodic inspections of
such products and certifies them as meeting the 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 501C.
For more information
Refer to the manufacturer's user guide included in your Warranty packet.
Maintenance
Inspect your water heater monthly and have it serviced at least once a year by the
manufacturer's recommended service technician. Refer to the manufacturer's owner's
manual for detailed inspection and maintenance information. If you have further questions
contact your RV dealer, the manufacturer, or Jayco Customer
Maintenance Record
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SCALDING INJURY-EXPLOSION
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