Installation Check List

Important: Only a new temperature and pressure relief valve should be used with your water heater. Do not use an old or existing valve as it may be damaged or not adequate for the working pressure of the new water heater. Do not place any valve between the relief valve and the tank.

The Temperature & Pressure Relief Valve:

  • Must not be in contact with any electrical part.

  • Must be connected to an adequate discharge line.

  • Must not be rated higher than the working pressure shown on the data plate of the water heater.

  • The Discharge Line:
  • Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.

  • Must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the discharge line.

  • Must terminate a maximum of 6 inches above a floor drain or external to the building.

  • Must be capable of withstanding 250°F (121°C) without distortion.

  • Must be installed to allow complete drainage of both the valve and discharge line.


    Solar Installation

    If this water heater is used as a solar storage heater or as a backup for the solar system, the water supply temperatures to the water heater tank may be in excess of 120°F. A tempering valve or other temperature limiting valve must be installed in the water supply line to limit the supply temperature to 120°F.

    Note: Solar water heating systems can often supply water with temperatures exceeding 180°F and may result in water heater malfunction.

    Water Heater Location


  • Centrally located with the water piping system.

  • Located indoors and in a vertical position. Protected from freezing temperatures.

  • Provisions made to protect the area from water damage. Drain pan installed and piped to an adequate drain.

  • Sufficient room to service the water heater.


    Water System Piping

  • Temperature and pressure relief valve properly installed with a discharge line run to an open drain and protected from freezing.

  • All piping properly installed and free of leaks.

  • Heater completely filled with water. (See Figure 2)

  • Closed system pressure buildup precautions installed.

  • Tempering valve installed per manufacturer.s instructions.

  • Electrical Connections

  • Wiring and connections comply with all applicable codes.

  • Water heater and electrical supply are properly grounded.

  • Proper overload fuse or circuit breaker protection installed.
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