Adequate thread sealant must be added to ensure a leak free installation. Wrap pipe-sealing tape around the threaded fitting on the expansion tank, then screw it onto the threaded adapter on the horizontal pipe. Mount vertically in downward position only. Normally, the tee-fitting must be about one foot above the water heater to provide sufficient clearance for the expansion tank. Each expansion tank manufacturer will have a calculator or chart which will tell you the recommended size and model of expansion tank you’ll need. For a water heater that uses gas, switch off the gas supply. But if you do not know how to perform this task, ring up your local gas provider for assistance. The manufacturer is not responsible for any water damage in connection with this expansion tank. Many plumbers make this connection with a copper flex line rather than rigid pipes. Most expansion tanks are less than 5 gallons, since residential water heaters range from about 30 to 100 gallons. By using The Spruce, you accept our, Instructions (New Water Heater Installation), How to Prevent Outdoor Spigots From Freezing, How to Install a Reverse Osmosis Water Filtration System, How PEX Pipes Can Help You Do Your Own Plumbing, How to Fix Inconsistent Water Temperature, How to Fix Water Hammer in Plumbing Pipes, How to Replace a Furnace Humidifier Solenoid Valve, How to Replace a Bathtub Waste-and-Overflow Tube, How to Install a Self-Piercing Saddle Valve, Understanding Electric Water Heater Wiring. Let’s look at the specifics. We will connect you with the best expansion tank installation experts for your exact needs. 4. Wait for engine to fully cool before beginning. This is a moderately difficult DIY project that shouldn't be tackled unless you have some experience with plumbing work. The expansion tank itself usually has a 3/4-inch threaded fitting that is joined into the cold water pipe by means of tee fitting and short lengths or threaded or sweat-soldered pipes. How to Install a Residential Expansion Tank Household Pressure. Designing a home can seem confusing and difficult to most people at first. The expansion tank generally gets connected to the cold water inlet of the hot water tank. Join me today as i bring a water heater up to code and show you how to install a thermal expansion tank! Without an expansion tank, pressure would be distributed t… 3. But if your system does have some type of limiting valve, it is a good idea to install an expansion tank, even if it is not required the local code. Ensure that tank is supported properly to hold the entire weight of the tank when full of water. You will need this line to make a connection with the unit. WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free 4.9 out of 5 stars 112 $48.99 Apollo Tank Tee for expansion tank installation. Do mount tank vertically with connection at top: It is also best to install diaphragm type expansion tanks vertically with the piping connection at the top. Mark a spot on the wall and drill some holes for the mounting pipes. Designed for use in hydronic systems, hydro-pneumatic and draw down applications, they are tough, durable, long-lasting and come in a variety of sizes and capacities to fit your application. install, use or service this expansion tank. But any other upright angle is fine. Head to the bottom of the connector on the expansion tank and then wrap the spot with plumber’s tape and attach the connector to the tee fitting. If so, then we can help. Since water heater installation generally requires a plumbing permit, you will learn about any expansion tank requirements when applying for a permit to install the water heater. Diaphragm tanks use a diaphragm to permanently separate the air and water. installing a thermal expansion tank properly sized for the tank; using a thermal expansion relief valve; using a governor 80 ballcock; Thermal expansion is caused by changing the temperature of the water. Secure this connection with a wrench. (Check the instructions that come with your tank). Turn off the water supply to your water heater. W essels manufactures three expansion tank designs: Compression, Bladder and Diaphragm.Each tank style has models that are either ASME or Non-ASME coded. Installations / Expansion tank. Once the expansion tank is installed, check the cold water supply line. However, it can be used in buildings with open water supply systems. Shut the power off to your water heater while you are installing the expansion tank IF YOUR … The tank has two sections that are separated by a rubber valve. Expansion Tank. The Thermal Expansion Relief Valve can replace a water heater expansion tank because it functions similarly. 017 447 447 44. To make sure that the expansion tank does not cause damage, one thing you can do is get a licensed qualified plumber to install it properly. Tools You’ll Need. This fitting is used to fix the system easily without applying heat or using special tools. Install the expansion tank in the incoming water line to the water heater between the water heater and the backflow preventer or check valve (see Fig. PS Series Plain Steel Expansion Tanks are designed, constructed and tested to ASME Section VIII, Div. Remember to get some plumber’s tape and the tee fitting. Install a short length of copper pipe and a tee-fitting to the adapter on the water heater's dielectric union. Next, place your hand under the tap to see if the water is hot. 3. Series PLT tanks feature a pre-pressurized steel tank with an expansion membrane that prevents contact of the water with the air in the tank. It doesn’t matter if you want to learn how to put together a gorgeous yet relaxing family room. Fill out the form on this page and tell us what you need, and we will match you with the best available providers for expansion tank installation services in the Worcester County area. If you are using a gas water heater, turn off the gas supply of the heater. For example, when water is heated from the temperature of 50 to 120 degrees Fahrenheit, the volume increases by approximately 2%. The expansion tank, piping, and your connections may in time leak. You can buy a unit for as low as $40 while larger models go for a few hundred dollars. 4. Restart the boiler system and check for relief valve discharge. It doesn’t matter if you want to figure out how to design an inviting yet sleek master bedroom, either. It fits the pipe while having features that can connect to the expansion tank. You can use a 3/4 threaded connection to fix the expansion tank. However, while many tank-style water heaters have thermal expansion tanks, you may be wondering to yourself, ‘is an expansion tank required with a tankless water heater?’ Does a tankless water heater require a thermal expansion tank? Drain water from Open the cold water supply and check for leaks. Aaron Stickley is a licensed plumber with first-hand knowledge in solving home plumbing problems. Install the expansion tank in the incoming water line to the water heater between the water heater and the backflow preventer or check valve (see Fig. An expansion tank is most critical in closed plumbing systems, where some form of pressure-limiting valve or back-flow valve prevents the expanding water from backing up into the municipal water main. Turn the cold water inlet shut-off valve “ON.” To purge the air, open a faucet and wait until a steady stream of water is coming from the faucet. 5. Switch on the water supply to your heater. Do you need expansion tank installation services in the Worcester County area.? 3. If It is placed at the end of the water supply line that provides cold water. 1). Tanks range in size from 2 to 10,000 gallons. After installing the expansion tank, pressure gauge, and pressure reducing valve, it will be necessary to expel all air from the piping. This reduces stress on the tank’s connection relative to horizontal mounting. When water is heated, it expands due to a phenomenon known as thermal expansion. This will provide a steady manageable pressure to the entire water distribution system. Cit. That way, it aligns with the screw holes of the tank. Now that you know the right size of the water expansion tank for your system, you should fix one in your building. 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