Vacuum Breaker Installation On Water Heater

The hvb is an avb and must follow the installation parameters of table 603 2.

Vacuum breaker installation on water heater.

Series n36 water service vacuum relief valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment. It needs to be installed after the cold water shutoff into the heater. Many water heaters especially traditional electric ones require changes to your wiring and potentially the breaker box. A hose connection vacuum breaker should be installed on each faucet or hose bibb that is connected to the potable water supply to prevent backflow into the water supply.

That vacuum breaker needs to be installed about 6 inches above the top of the tank. The vacuum relief valve shall be ansi z21 22 rated and csa certified. Hvbs must be installed at least six inches above the ground surface. Beyond a water heater permit some areas may also require either an electric or plumbing permit depending on the type of water heater.

Pressure zone assemblies strainers test kits vacuum breakers. In this video we demonstrate h. Vacuum breakers provide a simple dependable way to relieve unwanted vacuum which may develop in a closed vessel or pipeline. Siphonage install watts series 288a vacuum breakers.

It must be installed above the highest point in the system usually the highest sprinkler head or the highest slope in the yard. Install a listed temperature pressure relief valve in the opening on the side of the water heater. Standards tested and rated to ansi z21 22 csa certified specifications a watts model n36 m1 vacuum relief valve shall be installed on domestic hot water supply tanks heaters unit heaters steam kettles as indicated on plans.