We are all aware that installing a water heater expansion tank is important for safeguarding your plumbing system. Thus, this acts as a buffer for absorbing the pressure when water heats up and expands in your heater. Without this pressure, you might damage your pipes, valves, or even the water heater itself. Due to this reason, there is a growing demand for it. However, people are still not aware of the water heater expansion tank installation method. For this reason, we are sharing details on how you can install one effectively. To successfully install something, you need to understand the basics, whether you’re doing it yourself or hiring someone. So, let’s begin:
Materials Needed
Before you start water heater expansion tank installation, it’s important to know the right tools you need. Moreover, using wrong tools can cause trouble such as leakage and bad connections and may even cause harm to your water heater or expansion tank. Additionally, this can also save your time as you will meet the set of standards regarding safety and performance. This is what you will need:
- Expansion tank- sized accordingly for your system
- ¾-Inch Copper Tee-Fitting
- Copper Pipes
- Two ¾- -Inch Unions Of Copper Female-Threaded
- Dielectric Water Heater Nipple
- Pipe wrench
- Teflon tape
- Pipe cutter (if needed)
- Support bracket or strap (if needed)
How To Install An Expansion Tank?
Water heater expansion tank installation should be done right in order to maintain the smooth running of the system and for its longer lifespan. Let’s learn how to install an expansion tank step-by-step:
Turn Off Water Supply and Power
- Switch off the main supply of water at the water heater. To accomplish this, go to the circuit breaker and cut off the power.
- If you’re using a gas heater, put the gas control valve to pilot mode.
Relieve System Pressure
Now, in the following procedure, open the faucet for your house to let out any pressure that had built up.
Selecting Installation Point
- Now locate an appropriate position at the cold water line near the water heater where you will be installing it.
- The position should ideally be between the water heater and any backflow preventer or check valve.
Mount Dielectric Union
- First, wrap pipe-sealing tape around the dielectric union.
- Then, thread or tighten it into the cold water inlet port of your water heater using a pipe wrench or channel-lock pliers.
Prepare the Copper Adapter
- Wind pipe-sealing tape over the top threads of the union-about four to six times.
- Next, screw on the female threaded copper adapter.
Tightening the Adapter
- Again, use your pipe wrench or channel-lock pliers to draw the copper adapter tight against the union.
- But don’t over tighten it.
Installation of the Tee Fitting
- Now take a one-foot copper pipe and a tee-fitting and attach them to the adapter. This will leave room for your expansion tank.
- You can sweat-solder the connection or use push-fit connections.
Install the Expansion Tank Pipe
- Attach a short (no more than six inches) horizontal copper pipe to the side outlet of the tee fitting. Use either sweat-soldering or push-fit connections.
- Next, connect a female threaded adapter to the pipe.
Connect the Expansion Tank
- Finally wrap pipe-sealing tape around the threaded fitting on the expansion tank (about four to six loops). Screw it onto the horizontal pipe’s adapter.
- Tighten by hand, but be careful not to overtighten, as that can damage the pipes or fittings.
Restore Water Supply and Power
- Now, after the water heater expansion tank installation is complete, slowly reopen the main water supply valve.
- Also, check for leaks around the expansion tank and connections.
- Finally, you should now restore power to the water heater or turn the gas control valve back to the desired setting.
Things to Keep in Mind
- Placement: First and foremost, the expansion tank should be installed standing up, as most of the manufacturers would require.
- Support: Next, make sure the expansion tank is firmly supported to carry its full weight when filled with water.
- Proximity to Water Heater: Also, you must position the expansion tank approximately 18 inches from the inlet of the water heater.
- Adjust Air Pressure: Most importantly, before setting it up, change the air pressure in the expansion tank to match the cold water supply pressure in your home. You can do this by connecting the water pressure gauge to the drain valve at the bottom of your water heater tank. This is the same spot where you attach a hose when you flush your water heater.
By now you are aware of how to install an expansion tank; let’s see how you can check that there is no problem with the installation process.
How to Check If an Expansion Tank Is Working Properly?
It’s important to make sure your water heater’s expansion tank is working well to keep the system safe and efficient. Here’s how you can carry out the expansion tank inspection all by yourself.
1. Visual Inspection
- Check for Leaks: Look at the tank and its connections for any water leaks. In case there is a water leakage, it means the tank is damaged.
- Inspect for Corrosion: Also, look for rust on the outside of the tank, which can show it is wearing out.
2. Temperature Assessment
- Feel the Tank’s Surface: First, carefully touch the top and bottom of the tank. A working expansion tank usually feels cool on top (where air is) and warmer on the bottom (where water is). If the temperature is the same all over, it may not be working right.
3. Pressure Testing
- Turn Off Water Supply: Shut off the water supply to the expansion tank.
- Release System Pressure: Open a nearby faucet to relieve any built-up pressure in the system.
- Find the Schrader Valve: Schrader valve, like those on car tires, is usually located at the top or bottom of the tank.
- Measure Pressure with a Gauge: Now use a regular tire pressure gauge to check the tank’s air pressure. The tank pressure should match your home’s water pressure. This is mostly between 40 and 60 psi. If there is a large difference in the pressure, then surely there is a problem with your water tank..
4. Sound Test
- Gently tap the top and bottom of the tank with a metal object. A healthy tank often makes a hollow sound at the top and a solid sound at the bottom.
- A dull sound can mean the entire tank is filled with water.
5. Observe the Pressure Relief Valve
- If the valve often releases water, it might mean that the expansion tank isn’t handling pressure correctly
- This way, expansion tank inspection indicates a possible problem.
Challenges & Solutions To Installation
Most often, the water heater expansion tank installation can be tricky but with some care, you can do it correctly. Here are some common installation issues you might face and how to fix them:
Choosing the Right Size
- Issue: Choosing the wrong size expansion tank can mess up your system’s pressure.
- Fix: Look at the manufacturer’s instructions or ask a plumber to ensure you pick the right size for your system.
Correct Location
- Problem: If the tank is not in the right place, it won’t work properly, and you might infringe upon building codes.
- Fix: Install the tank on the cold water line, close to the water heater, without any shut-off valves in between. This allows it to function correctly.
Secure Installation
- Issue: These tanks can be heavy when filled with water, and you don’t want it to fall.
- Fix: Use strong brackets or straps to securely hold the tank in place.
Checking Compatibility
- Issue: Not all tanks work with every water heater.
- Fix: Make sure the expansion tank is suitable for your specific heater and follows local regulations.
Following Regulations
- Problem: Now water heater expansion tank installation must be done keeping in mind the local building. However, one might not be aware of the same and ignoring them can lead to problems.
- Solution: Try to google the local plumbing codes, or even better, you can consult a professional for the same.
How to Maintain a Water Heater Expansion Tank?
Regular expansion tank Maintenance will go a long way in keeping it running smoothly. Also, chances of it getting spoiled and replaced also become less. Thus, you can save money by skipping the cost of replacing it. Here’s how to do it:
- Check for leaks and rust: First, make sure the tank is free of rust and leaks by regularly inspecting it.
- Fix problems right away:
- Water leaking: If water is leaking from the tank, it could be too pressurized or leaking. Tighten any loose connections or get help from a professional.
- Blocked air: If air is blocked, it can stop hot water from flowing.Call a professional if this happens.
- Recharging the tank: The tank can lose pressure over time. To recharge it, drain and refill it to the right level with a professional’s help.
- Annual checkups: Always remember to inspect your tank from a licensed plumber once a year to keep everything running well.
Wrapping Up
To sum up, a way for water heater expansion tank installation so that you can ensure the safety and efficiency of your home’s plumbing system. By following the above steps religiously as well as taking into account the common installation issues there you can ensure your system operates smoothly and effectively. Plus, do not forget to follow the maintenance tips as well.
FAQ
Can I install a water heater expansion tank on my own?
Yes, you can install your water tank by yourself. Just make sure to follow the special instructions from the manufacturer and local building codes.
Is an expansion tank necessary for every water heater?
No, not every water heater needs one, but if you have a closed system or a high-efficiency water heater, go for it. Also, do not forget to consult a plumbing expert to find what suits your home!
How often do I need to replace my expansion tank?
Generally, an expansion tank can last anywhere from 5 to 10 years, but it’s good practice to keep an eye on it. If you notice signs of wear or it’s not functioning properly, it might be time for a replacement.
