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Water Heater Facts

properly installed water heater

Important requirements you should know about your new water heater:

  • Location—Prohibited in Bedrooms, bathrooms, or closets (with some exceptions)

  • Full bore water shut-off valve on the cold water side must be installed

  • A watertight drip pan is required if the water heater is over a framed area.
    a. Drip pan requires a minimum ¾ inch drain line that discharges to an approved location
    b. Drip pan must be 2 inches in diameter larger than the water heater
    c. Drip pan height must be a minimum of 2 inches high

  • Access to the front of the water heater must be a minimum of 30 inches of clear space

  • Protection from vehicles required by bollards or location.

  • Flame or spark must be a minimum of 18 inches above the floor.

  • Water heaters must be supported on the ground by 3-inch thick concrete pad above grade

  • Earthquake straps are required.

  • Straps must wrapped all the way around the water heater.

  • Must be able to inspect and remove the water heater.

  • A combination Temperature Pressure Relief (TNP) valve is required.

  • A TNP discharge drain line must be installed.

  • TNP Drainline may not slope upwards, drain to drip pans or discharge to crawlspaces.

  • Flexible connectors cannot be used as TNP drain lines.

  • Vent connectors must be mechanically secured by screws to the water heater (metal tape is not accepted)

  • Enclosures are required for exterior installations unless the water heater is listed for Exterior use.

Lastly regulations keep changing always check your local code enforcement for the latest requirements.

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