Rheem Warrior DVX Series Use and Care Manual - Page 12

! WARNING: Never use an open flame to test for gas leaks, as bodily injury, property damage or death could result. Gas Supply Check the markings on the water heater's rating plate to be certain the type of gas being furnished corresponds to that for which the water heater is built. The water heater can be converted from natural gas to LP or vice versa. See the Conversion Instructions section of this manual. The branch gas supply line to the water heater should be clean 1/2" black steel pipe or other approved gas piping material. A ground joint union or ANSI design certified semi-rigid or flexible gas appliance connector should be installed in the gas line close to the water heater. A manual gas shut-off valve should be at least 5 ft. above the floor and readily accessible. Compound used on the threaded joints of the gas piping must be of the type resistant to the action of LP gas. Use compound sparingly on male threads only. A sediment trap should be installed at the bottom of the gas line. Do not use excessive force (over 31.5 ft lbs.) in tightening the pipe joint at the thermostat inlet, particularly if teflon pipe compound is used, as the valve body may be damaged. The inlet gas pressure to the water heater must not exceed 14" w.c. for natural or LP gas. For purposes of input adjustment, the minimum inlet gas pressure (with main burner on) is shown on the water heater rating plate. If high or low gas pressures are present, contact your gas supplier for correction. Leak Testing The water heater and its gas connections must be leak tested at normal operating pressures before it is placed in operation. Turn on the manual gas shut-off valve near the water heater. Use a soapy water solution to test for leaks at all connections and fittings. Bubbles indicate a gas leak that must be corrected. The factory connections to the gas control (thermostat) should also be leak tested after the water heater is placed in operation. Pressure Testing the Gas Supply System The water heater and its manual gas shut-off valve must be disconnected from the gas supply piping system during any high pressure testing of that system at pressures in excess of 1/2 psi (14" w.c.). The water heater must be isolated from the gas piping system by closing the manual gas shut-off valve during any pressure testing of the gas supply piping at pressures equal to or less than 1/2 psi (14" w.c). High Altitude Ratings of gas appliances are based on sea level operation and need not be changed for installations at elevations up to 7,700 feet. For installations above 7,700 feet, Please contact your local distributor or place of purchase for a high altitude model. WARNING: Failure to install a water heater suitable for the altitude at the location it is intended to serve, can result in improper operation of the appliance resulting in property damage and/or, producing carbon monoxide gas, which could result in personal injury, or death. Hot and Cold Pipe Insulation Installation Typical vertical piping arrangement Typical horizontal piping arrangement For increased energy efficiency, some water heaters Please install the insulation, according to have been supplied with two 24" sections of pipe the illustrations above, that best meets your 12 insulation. requirements.