This condition is not covered under the limited warranty.Ī properly-sized thermal expansion tank should be installed on all closed systems to control the harmful effects of thermal expansion. The temperature pressure relief valve is not intended for the constant relief of thermal expansion. Thermal expansion can also cause intermittent temperature pressure relief valve operation: water discharged from the valve due to excessive pressure build up. This type of failure is not covered under the limited warranty. Thermal expansion can cause premature tank failure (leakage). As the volume of water grows, there will be a corresponding increase in water pressure due to thermal expansion. In a closed system, the volume of water will grow. As water is heated, it expands (thermal expansion). Typically, a closed system includes a pressure reducing valve (PRV) on the cold water inlet (supply line). Only qualifi ed person should service these components.ĭO NOT use with piping that has been treated with chromate’s, boiler seal, or other chemicals.ĭO NOT add any chemicals to the system piping which will contaminate the potable water supply. Use 95/5 tin antimony or other equivalent material.ĭO NOT tamper with the energy smart module, electronic thermostat, temperature sensors, heating elements, electrical connections, or temperature and pressure relief valve. Use full-flow ball or gate valves only.ĭO NOT use tin-lead solder in potable water lines. DO NOT use PVC water piping.ĭO NOT use any pumps, valves, or fi ttings that are not compatible with potable water.ĭO NOT use valves that may cause excessive restriction to water flow. The system should be installed only with piping that is suitable for potable (drinkable) water such as copper, CPVC, or polyethylene (PEX). Close the faucet and check all connections for leaks.ĭO NOT install this water heater with iron piping. To purge the lines of any excess air and sediment, keep the hot water faucet open for 3 minutes after a constant flow of water is obtained. After piping has been properly connected to the water heater, open the nearest hot water faucet.Then open the cold water shut off valve and allow the tank to completely fill with water. Install as specified under “Temperature and Pressure Relief Valve”.ħ. Install a discharge line from the temperature and pressure relief valve in the opening marked “T & P RELIEF VALVE”. Know the location of this valve and how to shut off the water to the heater.Ħ. It should be located close to the water heater and be easily accessible. Install a shut-off valve in the cold water inlet line. If installing the water heater in a closed water system, install a relief valve or expansion tank in the cold water line as specified under “Closed System/Thermal Expansion”.ĥ. Contact a licensed plumber or the local plumbing authority.Ĥ. These valves reduce the point-of-use temperature of the hot water by mixing cold and hot water and are readily available. Some local codes may require, and the manufacturer of this water heater recommends, installing a mixing valve in the domestic hot water line as shown in Figure 4. The Installation of dielectric unions in both the hot and cold water supply lines is recommended for ease of removing the water heater for service or replacement.ģ. IMPORTANT: Some models may contain energy saving heat traps to prevent the circulation of hot water within the pipes. Connect the hot water supply (3/4” NPT) to the fitting marked “Hot”. Connect the cold water supply (3/4” NPT) to the fitting marked “Cold”. Install the water piping and fitting as shown in Figure 3. IMPORTANT: Always use a good grade of joint compound and be certain that all fi ttings are drawn up tight.ġ. If solder connections are used, solder the pipe to the adapter before attaching the adapter to the hot and cold water fittings. IMPORTANT: Heat cannot be applied to the water fittings on the heater as they may contain nonmetallic parts. This should be placed on the supply to the entire house in order to maintain equal hot and cold water pressures. If this occurs, a pressure reducing valve should be installed in the cold water inlet line. Water supply pressure should be around 50 to 60 psi and should not exceed 80 psi. If the indoor installation area is subject to freezing temperatures, the water piping must be protected by insulation. Piping, fittings, and valves should be installed according to the installation drawing (Figure 3). User Manual Water Heater INSTALLING YOUR WATER HEATER Water System Piping Whirlpool ES50R10-55-110 50-Gallon Regular 10-Year 5500-Watt Double Element Electric Water Heater - Use Manual - Use Guide PDF.
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