Hot Water Heater Expansion Tank Diagram

This must be left open to prevent vacuum build up in the water heater.

Hot water heater expansion tank diagram.

If you have a tankless water heater you don t have to worry about an expansion tank because you don t have a primary tank to begin with. A water heater expansion tank is an additional small thank that is attached to your water heater unit. Hot water expansion tanks are designed to protect the home s hot water boiler and plumbing system. The tank of a water heater consists of a steel outer jacket that encloses a pressure tested water storage tank this inner tank is made of high quality steel with a vitreous glass or plastic layer bonded to the inside surface to prevent rusting in the center of the tank is a hollow exhaust flue through which exhaust gases from the burner flow up to an exhaust vent.

Thermal expansion tanks promote pressure relief for yo. This may seem like an easy question but it is also one that many people do not actively think about. Responsible for any water damage in connection with this expansion tank. When water is heated or the hot water is shut off quickly the tanks filled with both air and water will equalize the resulting water pressure.

Shut off power supply and cold water supply to the water heater. A hot water expansion tank is a small metal tank usually 2 5 gallons that s installed just downstream of the cold water inlet valve that feeds your residential water heater. In a closed plumbing system a standard tank water heater can stress your plumbing pipes and fixtures through the normal thermal expansion that happens when water is heated. Drain water from the water heater by opening a faucet or other fixture.

Both water heaters and boilers for home heating systems can be prone to this kind of damage unless measures are taken to prevent it. Back to product literature piping diagrams commercial electric heat pump commercial tank type electric commercial tank type gas commercial tankless domestic. The expansion tank s purpose is to protect your house s hot water system from excessive pressure which can cause damage to fixtures your water heater lines. What type of water heater do you have.

Unequal water to air ratios caused by a built in. So when the water pressure gets too high it will flow into your expansion tank instead of damaging your home s plumbing valves fixtures and joints and potentially causing a. This can be a problem in any closed system where water is heated. It is designed to handle that excess water that builds up.

Water heaters can be fitted with expansion tanks to capture expanded water and prevent water heater malfunction. Install the wh or whv tank as shown by teeing into the the.