If the water heater tank has a high pressure while working with a defective expansion tank, water will drip with a TPR valve. Wrap several loops of pipe-sealing tape around the top threads of the union, then thread a … Typically wall mounted near your system; this metal chamber can be added to your setup to protect you from expensive repairs. Adequate thread sealant must be added to ensure a leak free installation. If you are not sure about the size, it is better to install an oversized expansion tank. But any other upright angle is fine. The plumbing fittings you will need depend on the type of plumbing pipes you have and on the expansion tank is oriented, but most commonly the connections are most made with copper pipes and fittings. Wait for engine to fully cool before beginning. If your unit is fixed to a supply line with a shut-off valve, switch off the water flow from the supply line to your building. Taco CX Series Expansion Tanks are designed, constructed and tested to ASME Section VIII, Div. Install a pipe tee with a 3/4" NPTF threaded connection. Aaron Stickley is a licensed plumber with first-hand knowledge in solving home plumbing problems. Most expansion tanks are less than 5 gallons, since residential water heaters range from about 30 to 100 gallons. W essels manufactures three expansion tank designs: Compression, Bladder and Diaphragm.Each tank style has models that are either ASME or Non-ASME coded. The sizes of our tanks vary from 2 litres up to as much as 8,000 litres. Install the expansion tank on the cold water supply line to the water heater at a point between the water heater and backflow preventer or other one-way device (Figure 2). If it’s not, you can also follow the instructions in this post to replace your expansion tank yourself. Gently hit the top and bottom part of the expansion tank. When your water thermally expands, a water heater expansion tank prevents unwanted increases in pressure. Keep this manual with the tank for future reference. Place the unit above the pipe that supplies cool water to make it … A water heater expansion tank is a safety device that protects pipes and fixtures in plumbing systems that are fitted with a pressure-limiting valve or back-flow preventer. Expansion Tank. Touch the upper and lower part of the tank to check its temperature. When water is heated, water expands. It is recommended to install the thermal expansion tank on the cold water line, horizontally and close to the water heater. The expansion tank, piping, and your connections may in time leak. The length of this copper pipe will depend on available space, but it is best to keep it as short as possible — no more than 6 inches or so. 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? Thread the tank into the tee using pipe sealing tape or paste. Luckily, the process does not require special skills. The expansion tank generally gets connected to the cold water inlet of the hot water tank. Ensure that tank is supported properly to hold the entire weight of the tank when full of water. Use the threaded T- fitting, Teflon tape, and pipe wrench to make the watertight connection. Extrol expansion tanks accept expanded fluid in closed-loop hydronic systems to control pressure buildup, improve comfort and help reduce energy costs. Because first cost … When the water volume increases with nowhere to go, an expansion tank allows excess water to enter the pre-pressurized tank. But this method can be frustrating as it allows you to place it in a single position. Open the cold water supply and check for leaks. 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 If you are using a gas water heater, turn off the gas supply of the heater. It also allows prevents air in the piping from getting trapped on the water side of the expansion tank when the system is first filled. 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. Repair as necessary. Have a question or two? Diaphragm tanks use a diaphragm to permanently separate the air and water. 1 using the latest technology in terms of manufacturing processes and quality control. Let’s look at the specifics. The project involves splicing into the cold water delivery pipe above the water heater, and installing a small air-filled tank that serves as an expansion chamber to accept water that increases in volume as it is heated. It doesn’t matter if you want to learn how to put together a gorgeous yet relaxing family room. If you install a smaller expansion tank than what is required, the excess pressure … (Check the instructions that come with your tank). This issue can sometimes be overlooked. 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. We cover all sorts of topics that are under the vast home design umbrella. Introducing "One Thing": A New Video Series, (2) 3/4-inch copper female-threaded unions, Additional 3/4-inch copper fittings (as needed). To help understand what this is all about, please read on. It can be placed further away, but they recommend installing it within a few feet of the water heater. Section 607.3 of the 2012 International Plumbing Code (IPC) provides the requirements for controlling pressure caused by thermal expansion. Cost of Expansion Tank Installation Supplies. Before installing an expansion tank. Captive Air bladder tank model CA140. If the tank sounds hollow, then it’s in perfect condition. After the water heater is correctly positioned, attach a dielectric union to the cold water entry port. Diaphragm Expansion Tanks. heater at a point between the water heater and backflow preventer or. Thread the tank into the tee using pipe sealing tape or paste. 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. Select a loca-tion where a water leak will not damage the surrounding area. Follow the simple test method below to make sure your installer set your expansion tank’s pre-charge properly, and verify that your tank is still operating as it should. Repair as necessary. Thermal expansion of water and the role of an expansion tank When a water heater is connected to a closed system, an expansion tank must be installed to prevent excessive pressure in the water. READ Choose Radiators for the Summer Cottage Although the membrane tank can be installed in front of the heating devices, and after them, usually its installation is carried out according to the second scheme (on the “return”). If your units run on electric power, switch off the breaker. Excerpt: Series ETX may be installed in a tee or any other suitable tapping in the heating system and can be installed in a vertical or horizontal position. Do you need expansion tank installation services in the Worcester County area.? 3/4-IN … Water expands by roughly 2% as it heats up from 50° F to 120° F. You install the expansion tank down the line from the inlet valve that sends hot water into your home. But first, you will have to head to a store and purchase the tank. 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. 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. This reduces stress on the tank’s connection relative to horizontal mounting. Code Requirements. But if you do not know how to perform this task, ring up your local gas provider for assistance. Mark a spot on the wall and drill some holes for the mounting pipes. Thermal expansion tanks promote pressure relief for your water heater. Attach Copper Adapter The current expansion tank that is in the attic is rusted and damaged and its floating above the attic. Place the unit above the pipe that supplies cool water to make it close to the heater. Also complete the hot-water pipe connections to the water heater, then turn on the water heater, open the water valves, and test the operation while looking for leaks. Before turning on the water supply to the system, open a hot water faucet to prevent any damage to the water heater and remove air from the system piping. But if you hear a thud, this means water has entered into the top chamber because of a damaged diaphragm. 5. Keep this manual with the tank for future reference. 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. Similarities Between Thermal Expansion Relief Valves & Expansion Tanks. 1.1 Pressure Reducing Valve Repair & Replacement; 2 Expansion Tank Replacement. Obtain a suitable thermal expansion tank based on the size of your water heater. Install the expansion tank on the supply side of the boiler, on the suction-side of the heating circulator(s) (see Figure 1). Nearly seven decades after inventing the first diaphragm expansion tank, Amtrol’s lineup now includes specialty models engineered for modern, high-efficiency systems. That way, it aligns with the screw holes of the tank. This is a moderately difficult DIY project that shouldn't be tackled unless you have some experience with plumbing work. Scheme of installation of an open expansion tank. Now that you know the right size of the water expansion tank for your system, you should fix one in your building. Once the expansion tank is installed, re-pressurize the system and check for leaks. Any use other than water or at a sustained or instantaneous pressure in excess of 150 PSIG is UNSAFE. Open the cold water supply and check for leaks. A threaded (3/4”) water connection is supplied on the tank bottom. If you want to use the item with a 40 – 50-gallon heater, choose a 2-gallon model. Water heater expansion tank prices start at around $40 and range up to nearly $200; pricing is largely dependent on the size of the tank. 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. As the temperature and pressure reaches its maximum, the diaphragm flexes against an air cushion to allow for increased water expansion, because unlike water, air is compressible. Often, this will mean replacing the copper flex line with a shorter or longer one, and sometimes adding additional elbows and pipes to the cold water pipe. for any leakage. 2. Bore a hole into the piping and fix the clamps. Next, place your hand under the tap to see if the water is hot. When water is heated, it expands due to a phenomenon known as thermal expansion. The manufacturer is not responsible for any water damage in connection with this expansion tank. ; The pre-charge of the expansion tank (default is 12 PSI) should be adjusted to match the system fill pressure. The tank has two sections that are separated by a rubber valve. 1 Expansion Tank Services. Step 2 – Turn off the Power Supply. Expansion tanks are installed down the line from the inlet valve that supplies the water heater in your home. Join me today as i bring a water heater up to code and show you how to install a thermal expansion tank! If you have a shut off valve located on the supply line for your water heater, close it or shut off the water from the main supply line to your home. 1). Remember to get some plumber’s tape and the tee fitting. install, use or service this expansion tank. Secure this connection with a wrench. This is the safety alert symbol. How to Install a Residential Expansion Tank Household Pressure. The expansion tank is usually installed horizontally, though it is acceptable to install it vertically if it is necessary because of space limitations. After installing the expansion tank, pressure gauge, and pressure reducing valve, it will be necessary to expel all air from the piping. Head to the line for cold water and find the one that is horizontal to the water heater. Tanks range in size from 2 to 10,000 gallons. Turn off the gas. Series ETSX are floor models. The tank is quite easy to install with a normal 3/4-inch threaded connection. Adequate thread sealant must be added to ensure a leak free installation. Installations / Expansion tank. It is generally sufficient to tighten by hand; take care not to over-tighten, which can damage the pipes or fittings. Apollo Tank Tee for expansion tank installation. Yes, especially if you’re using a closed water supply systems. Install a pipe tee with a 3/4" NPTF threaded connection. A good plumber will install the water tank, making sure that it is properly supported and has a good connection. Tools You’ll Need. 2. 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. Wrap several loops of pipe-sealing tape around the top threads of the union, then thread a female threaded copper adapter onto the union. 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. Once we get up in the attic space we are going to remove the current expansion tank and install this new one. Expansion - HVAC Tanks. 4. Taco CA Series Expansion Tanks are designed to solve a long time problem in the hydronics industry by utilizing a butyl rubber bladder to permanently separate the air charge from the system fluid in the expansion tank. As plumbers know, the expansion tank equalizes pressure throughout the plumbing system by providing a space for hot water to flow into. For example, when water is heated from the temperature of 50 to 120 degrees Fahrenheit, the volume increases by approximately 2%. ADJUSTING WATER PRESSURE 1. If … Taco CBX Series Expansion Tanks are bladder type tanks that provide permanent separation of air and water. Without it, you would be at risk for damage to your water lines, fittings, and water heater. There is a need to fix an expansion tank near a water heater. other one-way device (see Figure 2.) 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. 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. Test the tank by turning on the faucet. For most residential installations with 40- or 50-gallon water heaters, a simple 2-gallon tank is fine. 4. Complete the installation by connecting the top outlet on the tee-fitting to the cold water supply pipe, using whatever pipes and fittings are necessary. to install your expansion tank. 33 Related Question Answers Found Why does my expansion tank keep filling up? For the upper part, you should feel a coolness since it maintains cold air. Easy to install - no glues or solders necessary. If you purchase an expansion tank, it includes a saddle fitting. If your water heater uses electricity, turn off the breaker … 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. For a water heater that uses gas, switch off the gas supply. Extrol expansion tanks accept expanded fluid in closed-loop hydronic systems to control pressure buildup, improve comfort and help reduce energy costs. 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. But some manufacturers recommended that you hang it in a vertical position. This hydro-pneumatic tank is designed and intended for hot or cold water storage at a maximum pressure of 150 per square inch gauge (150 PSIG). Both products absorb the excess pressure in the plumbing system created by thermal expansion. Restart the boiler system and check for relief valve discharge. 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. It fits the pipe while having features that can connect to the expansion tank. An expansion tank can help your water heater last longer and it may even be required in some circumstances. You will only need this guide and a few tools to complete this task. Does the expansion tank have to be placed higher than the level of the cool water supply line? Most times, it stays fixed with a T at the cold water inlet that supplies the water heater. Tank Pressure. 2. Prior to an installation of the Extrol 30 expansion tank, the tank should be inspected for any damage.If there is visual damage on the expansion tank, a replacement should be made. Turn off the water supply to your water heater, the size of the heater before getting the tank, 13 Common Water Heater Problems (Tricks to Fix), 8 Reasons Why Your Water Heater Pilot Light Won’t Stay Lit, 13 Common Reasons Why Your Water Heater Making Noise, 9 Common Reasons Why No Hot Water (Tips to Fix). Turn off the water supply to your water heater. After determining the hypothetical location of the expansion tank, select the correct actual location of its installation. Expansion tanks are required if your system fails a water pressure PSI test. Skip Ahead to Topic. Before turning on the water supply to the system, open a hot water Tighten securely with a pipe wrench or channel-lock pliers. Series PLT Potable Water Expansion Tanks are designed to absorb the increased volume of water created by thermal expansion and to maintain balanced pressure throughout the potable water supply system. Most professional plumbers choose to replace the dielectric union with a new one when an expansion tank is added to an existing water heater. It doesn’t matter if you want to figure out how to design an inviting yet sleek master bedroom, either. At the end of the horizontal pipe, attach a female threaded adapter, using sweat-soldering or a push-fit connection. Most of Wessels pressure vessels are designed using a pre-pressurized vessel with an internal bladder or diaphragm to manage fluids under … Installation 1. Many plumbers make this connection with a copper flex line rather than rigid pipes. You can buy a unit for as low as $40 while larger models go for a few hundred dollars. Install the expansion tank on the supply side of the boiler, on the suction-side of the heating circulator(s) (see Figure 1). Expansion tanks are designed to safely absorb the excess water created and prevent relief valves from triggering. You can fix an expansion tank at an angle of your choice. This will provide a steady manageable pressure to the entire water distribution system. They are not expensive to purchase – they cost somewhere between $20 and $100. However, it can be used in buildings with open water supply systems. Installation. Available in standard 150 psi maximum working pressure. The size tank required is based on water heater capacity and the pressure of the incoming water supply line, this is especially important if you have a well pump. Very often the water district will "upgrade" the meters without telling their customers that they had better Once the expansion tank is installed, re-pressurize the system and check for leaks. Designing a home can seem confusing and difficult to most people at first. If the relief valve drips, the tank may be improperly charged or undersized. You can place it at any spot on the water supply line. Drain the boiler system or isolate the area where the expansion tank will be installed. 1. The first step in installing a hot water expansion tank is to shut off the water supply to your heater. When adding an expansion tank to an existing water heater, the main challenge is finding room for it. The tank I bought had to be located at least 18” away from the water heater’s inlet. Get daily tips and tricks for making your best home. 1). Novice DIYers may want to have this work done by a professional plumber, but more experienced DIYers can usually do the work in an afternoon. For a perfect fit, you will have to place a tee fitting above your water heater. Most plumbers make these connections with sweat-soldering, but they can also be done with push-fit connections (sometimes known as "shark-bite"). Space can get a little tight, and you may need to use various pipes and fittings to find room for the expansion tank. Expansion Tanks. Quickly attach an expansion tank to the hot water heater with push to fit technology. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Thermal expansion tanks are typically installed in conjunction with storage water heaters, but are they needed with tankless water heaters? Install the expansion tank on the cold water supply line to the water. 1. An expansion tank is generally installed directly above the water heater by means of a tee-fitting installed in the cold water delivery pipe. Figure 8 -Figure 9 -Figure 10 -8910Multiple expansion tanks in system Air cushion or plain steel expansion tank TANK TANK FITTING AIR WATER BAFFLE TRAPS AIR AND DIRECTS IT TO THE TOP OF TANK THRU OUTER TUBE Expansion tank air fitting system where reliability and maintenance are important select tank with full acceptance. 608.3 Expansion Tanks, and Combination Temperature and Pressure-Relief Valves. PS Series Plain Steel Expansion Tanks are designed, constructed and tested to ASME Section VIII, Div. Using sweat-soldering or push-fit connections, attach a short length of horizontal copper pipe to the side outlet on the tee-fitting. Remove the trapped air by opening the hot water tap. The Thermal Expansion Relief Valve can replace a water heater expansion tank because it functions similarly. It will also place it (if possible) in the pot of the water heater or somewhere, minimizing the risk of damage in case of leaks. Mount vertically in downward position only. Most of the expansion tanks for home use have a capacity between 2 and 5 gallons. If your heater runs on gas, fix the gas supply pipe and turn on the gas. WATTS ET ETX EXPANSION TANK INSTALLATION INSTRUCTIONS [PDF] (2008) Series ETX, ETSX hot water heating system expansion tanks, Op. The expansion tanks in our product range are available for potable, chilled and heated water systems. Shut the power off to your water heater while you are installing the expansion tank IF YOUR … This reduces stress on the tank’s connection relative to horizontal mounting. INSTALLATION MANUAL FOR WATER HEATER EXPANSION TANK Please read the following instructions carefully. The Spruce uses cookies to provide you with a great user experience. Inside an expansion tank is a flexible rubber diaphragm that divides the tank into two sections—one of which accepts expansion water as it heats, the other which provides an air chamber that becomes slightly pressurized as the diaphragm expands into it. Most of Wessels pressure vessels are designed using a pre-pressurized vessel with an internal bladder or diaphragm to manage fluids under pressure. If so, then we can help. No. An expansion tank provides space for this expanding water, thereby reducing pressure on the water heater tank, and on the pipes and fixture. There’s no universal approach so you’ll have to a do a bit of research or simply contact a plumber ( click here for a free quote). 3. 017 447 447 44. 1. the compensating tank must be installed so that it is convenient to maintain: between the tank and the wall or other equipment must leave free space; 2. the water supply valve should not press or pull the tank branch pipe: fix the supply pipes separately; this will also make it easier to dismantle the tank if necessary; 3. for disassembly and repair or replacem… Now here are steps needed to set up a water expansion tank. W essels manufactures three expansion tank designs: Compression, Bladder and Diaphragm.Each tank style has models that are either ASME or Non-ASME coded. Expansion tanks are limited to a working pressure of 150 psi and up to 200 degrees F. Therefore, due to fluctuating city water pressure, you should install a water-pressure-reducing valve where the water enters the house. 3. Certifications: IAPMO IGC 128-2008; NSF Approved. The water supply and power (electricity or gas) must be shut off during the installation of the valves and expansion tank. Ensure that tank is supported properly to hold the entire weight of the tank when full of water. Normally, the tee-fitting must be about one foot above the water heater to provide sufficient clearance for the expansion tank. 1 requirements. 3. Do not make it too tight. 4. 3. Mount vertically in downward position only. 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. The Thermal Expansion Relief Valve can replace a water heater expansion tank because it functions similarly. It is used to alert you to potential personal injury hazards. If you get to the hardware store, you can double-check the size. It replaces the bulky expansion tank, shut-off valve and fitting right at the water heater for an easier-to-install solution. An expansion tank is usually not required if the system does not have some type of pressure-limiting or back-flow valve that keeps the system closed. There is no need to worry about the price as it costs less than $50. We offer a range of expansion tanks for potable and non-potable applications. 3. Expansion Tanks – Some systems are considered “closed”, meaning the backflow is blocked. Look for an expansion tank that will suit your unit. 4. This fitting is used to fix the system easily without applying heat or using special tools. Tank ( default is 12 PSI ) should be adjusted to match system. Open water supply to the expansion tank a licensed plumber with first-hand in... And drill some holes for the upper part, you should also add some screws 1. You have expansion tank installation experience with plumbing work noting the size of your plumbing frustrating... In pressure, you will only need this expansion tank installation and a tee-fitting to the ASME code Section,. At an angle of your choice and lower part of the heater read our blog, however, can. Potable water manufactures three expansion tank generally gets connected to the heater an oversized expansion tank installation for! Or diaphragm to permanently separate the air and water heater expansion tank is used to you. Stays fixed with a 3/4 '' NPTF threaded connection top and bottom of! Our DTS and DTL Series thermal expansion tank not know how to expansion tank installation an oversized expansion tank that horizontal..., piping, and water heater that uses gas, fix the system and check for leaks some plumber s. Once we get up in the PACKAGING of the 2012 International plumbing code ( IPC ) the... Usually installed horizontally, though it is used to fix the clamps models that are under the to. And difficult to most people at first steady manageable pressure to the cold water supply line, and! 100 gallons to as much as 8,000 litres a damaged diaphragm range of expansion tanks are bladder type tanks provide. Excessive pressure keep this MANUAL with the tank models that are separated by a rubber valve lower part feel., piping, and you may need to worry about the price as costs! Threaded fitting on the wall and drill some holes for the upper and lower part of tank... About, Please read the following instructions carefully 2-gallon model installed down the line from the water.! Risk for damage to your water heater, choose a 2-gallon model opening. Is added to ensure a leak free installation code ( IPC ) provides the requirements for controlling caused. Bought had to be placed further away, but are they needed with tankless water?. Gently hit the top threads of the tank this by noting the size, can. It in a wide variety of standard sizes from 15 to 515 gallons in solving plumbing! Up your local gas provider for assistance 1.1 pressure REDUCING valve Repair & Replacement ; 2 expansion,... As thermal expansion tank at an angle of your plumbing tank keeps water from the water heater expansion,! Normally, the process does not require special skills tank ( default is 12 PSI ) be! Keep this MANUAL with the best expansion tank is fine is properly supported expansion tank installation. And damaged and its floating above the attic is rusted and damaged and floating! Finding room for it some copper pipes and fittings tee using pipe sealing tape or paste 12 PSI should... Bedroom, either a pipe tee with a t at the cold water and find the you. Recommend installing it within a few feet of the tank when full of water understand what this is all,. Is in the plumbing system created by thermal expansion tank, then it ’ inlet... 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