Water Heater Expansion Tank Installation Diagram

This tank must be installed according to your local plumbing code. Heavy duty butyl rubber diaphragm ensures long life. Protect your plumbing in the event of a pressure increase with these quality thermal expansion tanks.

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A 2 gallon expansion tank works with water heaters up to 50 gallons.

Water heater expansion tank installation diagram. Safely controls thermal expansion by accepting the expanded water and keeping the system pressure safely under the relief valve setting. Positive lock retention system controls compression in the diaphragm connection eliminating air loss or water leaks in hot water expansion tank. A water heater expansion tank is an additional small thank that is attached to your water heater unit. As water heats it expands and without a way for the pressure to be alleviated your water heater has to absorb the.

Shut the power off to your water heater while you are installing the expansion tank if your water heater is electric. Take this information to your plumbing supply house to get the right sized expansion tank. This drawing is intended as a guide only. Interior powder coating is permanently bonded to the tank shell for ultimate protection on the water side of the water heater expansion tank.

Tankless water heater remote control expansion tank. A 5 gallon expansion tank is needed for water heaters up to 100 gallons. An expansion tank is generally installed directly above the water heater by means of a tee fitting installed in the cold water delivery pipe. A thermal expansion tank alleviates excess pressure in the lines of a closed system.

Gas pipe cold water pipe hot water pipe union return circulation line shut off valve circulation pump pressure relief valve check valve cold water isolator valve assembly hot water isolator valve assembly. Thermal expansion tanks promote pressure relief for your water heater. 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 burst line with immeasurable damages and cost. It should be at least 18 from the cold water inlet to the water heater.

However if you have a gas water heater unless you know exactly how to turn the gas supply on and off do not attempt to do so. This is always stamped on the side label of the hot water heater. Check the manufacturer s recommendations for exact sizing. You may have a 50 gallon or 80 gallon or whatever size hot water heater.

Water heater thermal expansion tanks. The expansion tank is usually installed horizontally though it is acceptable to install it vertically if it is necessary because of space limitations. It is designed to handle that excess water that builds up. Determine which expansion tank you will need.

The tanks also feature a brass or stainless steel system connection for maximum corrosion resistance. All you have to do is to determine the capacity of your hot water heater. Permanently separated from the tank s air charge. A 150 psi relief valve must be installed in the water heater.