Welcome to our comprehensive guide on installing a recirculating pump on a tankless water heater. If you're looking for a way to enjoy instant hot water and reduce water wastage, installing a recirculating pump is the perfect solution for you. In this step-by-step guide, we will walk you through the installation process, ensuring you have all the information you need to successfully complete the task.
Before we dive into the installation process, it's important to understand why installing a recirculating pump on your tankless water heater is beneficial. Not only will it provide you with instant hot water at your fixtures, but it will also help you save energy and reduce water usage. With built-in timers for energy efficiency, recirculating pumps are a smart addition to any tankless water heater system.
Now, let's take a look at the tools and materials you'll need to complete the installation. Make sure you have a recirculating pump kit, channel-type pliers or a pipe wrench, a screwdriver, a bucket, and a towel. Additionally, you'll need a 120-volt outlet near your water heater for the pump.
Key Takeaways:
- Installing a recirculating pump on a tankless water heater provides instant hot water and reduces water wastage.
- A recirculating pump helps save energy and has built-in timers for efficiency.
- You'll need a recirculating pump kit, pliers or a pipe wrench, a screwdriver, a bucket, and a towel for the installation.
- Ensure you have a 120-volt outlet near your water heater for the pump.
- Next, we'll guide you through shutting off the water heater and water supply.
Why Install a Recirculating Pump on a Tankless Water Heater?
Installing a recirculating pump on a tankless water heater offers numerous benefits, making it a worthwhile investment for any homeowner. One of the primary advantages is the ability to enjoy instant hot water at any faucet or shower in your home. With a recirculating pump, there's no more waiting for the water to heat up – it's ready instantly, providing convenience and comfort.
Aside from the instant hot water feature, a recirculating pump also promotes energy efficiency. By minimizing the time it takes for hot water to reach your fixtures, you reduce the amount of water wasted as you wait for it to heat up. This not only saves water but also reduces the energy required to heat it, resulting in lower utility bills and a more eco-friendly household.
Most recirculating pumps also come equipped with built-in timers, allowing you to set specific times when the pump operates. This feature further enhances energy efficiency by only circulating the water when it's needed most, such as during morning showers or evening baths. By automatically turning off when hot water isn't required, the recirculating pump helps conserve energy and prolong the lifespan of your tankless water heater.
https://www.youtube.com/watch?v=lE2QFLlEXNw
Table: Benefits of Installing a Recirculating Pump on a Tankless Water Heater
Benefit Description Instant Hot Water Get hot water at your fixtures without waiting for it to heat up. Water and Energy Savings Reduce water wastage and lower energy consumption for heating. Convenience Enjoy the convenience of immediate hot water throughout your home. Energy-Efficient Timers Built-in timers optimize pump operation and save energy.
With the benefits of instant hot water, energy efficiency, and water savings, installing a recirculating pump on your tankless water heater is a smart choice. The next section will outline the tools and materials you'll need for the installation process.
Tools and Materials Needed for Installation
Before you begin installing a recirculating pump on your tankless water heater, it's important to gather the necessary tools and materials. Here is a list of what you'll need:
- Recirculating pump kit
- Channel-type pliers or pipe wrench
- Screwdriver
- Bucket
- Towel
Ensure that you have a 120-volt outlet available near your water heater for the pump.
Gather the following tools and materials:
Tools Materials Recirculating pump kit - Channel-type pliers or pipe wrench - Screwdriver - Bucket - Towel -
Having these tools and materials ready will make the installation process smoother and more efficient. Double-check that you have everything before getting started.
Shutting Off the Water Heater and Water Supply
Before beginning the installation process for your recirculating pump on a tankless water heater, it is crucial to shut off the water heater and the water supply. This step ensures a safe and hassle-free installation. Here's how you can do it:
Shutting Off the Water Heater
- For electric water heaters, locate the circuit breaker panel and turn off the breaker that controls the water heater. Alternatively, you can unplug the water heater from the power source.
- For gas water heaters, find the gas supply valve near the unit and turn it off. You can also shut off the gas supply valve at the main gas meter.
Shutting Off the Water Supply
- Locate the shut-off valves on the cold water pipe leading into the water heater. These valves are typically located above the water heater or in the utility room.
- Turn the shut-off valves clockwise to shut off the water supply to the water heater.
- If there are no shut-off valves on the cold water pipe, you will need to shut off the main water supply to the house. This valve is usually located near the water meter.
Once you have successfully shut off the water heater and the water supply, you can proceed with the installation of the recirculating pump. Remember to follow the manufacturer's instructions and local plumbing codes to ensure a proper installation.
Steps Actions 1 Locate the circuit breaker panel or power source for the water heater. 2 Turn off the breaker or unplug the water heater for electric models. For gas models, locate the gas supply valve and turn it off. 3 Find the shut-off valves on the cold water pipe leading into the water heater. Turn them clockwise to shut off the water supply. 4 If there are no shut-off valves, shut off the main water supply to the house.
Disconnecting the Water Supply Line
The next step in installing a recirculating pump on a tankless water heater is disconnecting the water supply line. This step is crucial to ensure a smooth installation process. The water supply line is responsible for delivering water to the heater, and disconnecting it allows for proper connection of the recirculating pump.
To disconnect the water supply line, locate the connection point on the hot side of the water heater. This connection can be either a flexible water supply line or rigid pipes. If it is a flexible line, simply unscrew the connection using channel-type pliers or a pipe wrench. Be sure to have a bucket and towel handy to catch any water that may spill during the disconnection.
If the connection is rigid pipes, the process may be slightly more complicated. You may need to use a pipe cutter to cut the pipes and install a new connection point for the recirculating pump. This step may require some plumbing expertise, so it is recommended to consult a professional if you are not familiar with working with rigid pipes.
https://www.youtube.com/watch?v=-lZoeLgd5Rw
Tools Materials Channel-type pliers or pipe wrench Bucket Screwdriver Towel
Installing the Recirculating Pump on the Water Heater
Now that you have all the necessary tools and materials, it's time to install the recirculating pump on your tankless water heater. Follow the step-by-step instructions below to ensure a successful installation:
- Start by screwing the recirculating pump onto the hot side of the water heater. Ensure that the pump is securely attached and that the timer face is easily adjustable.
- If needed, use plumber's tape on the threads to create a tight seal and prevent any leaks.
- Next, reconnect the hot water line to the recirculating pump. Make sure the connection is secure and properly tightened.
- Inspect the connections to ensure there are no signs of leaks or loose fittings.
By following these steps, you will have successfully installed the recirculating pump on your tankless water heater. This will allow you to enjoy instant hot water and reduce water wastage in your home.
Table: Installation Steps for the Recirculating Pump
Step Description 1 Screw the recirculating pump onto the hot side of the water heater. 2 Use plumber's tape on the threads for a tight seal. 3 Reconnect the hot water line to the recirculating pump. 4 Inspect connections for leaks or loose fittings.
Refer to the table above for a quick summary of the installation steps. Take your time to ensure that each step is completed accurately to guarantee optimal performance of your recirculating pump.
Installing the Check Valve at the Farthest Sink
Now that we have installed the recirculating pump on the water heater, it's time to focus on installing the check valve at the farthest sink. This step is crucial to ensure proper circulation and prevent backflow in the system. Here's a step-by-step guide on how to install the check valve:
Step 1: Shut Off the Water Supply
Begin by going to the sink farthest away from the water heater and shutting off the water supply. This can usually be done by turning off the shut-off valves located under the sink. If there are no shut-off valves, you may need to shut off the main water supply to the house.
Step 2: Disconnect the Faucet Supply Tubes
Once the water supply is turned off, you'll need to disconnect the faucet supply tubes connected to the sink. Use a wrench or pliers to loosen the nuts securing the tubes to the faucet. Be careful not to damage the tubes or any other components during this process.
Step 3: Connect the Faucet Supply Tubes to the Check Valve
After removing the faucet supply tubes, connect them to the check valve. Ensure that the hot water supply tube is connected to the hot side of the check valve and the cold water supply tube is connected to the cold side. Use a wrench or pliers to tighten the nuts and ensure a secure connection.
Step 4: Run New Water Supply Tubes
With the check valve in place, you'll need to run new water supply tubes from the check valve to the hot- and cold-water shut-off valves. Measure and cut the appropriate length of tubing for each side. Use a tubing cutter for a clean and precise cut. Connect the tubes to the shut-off valves, ensuring a tight fit.
Once you have completed these steps, you have successfully installed the check valve at the farthest sink. This ensures proper circulation of hot water in the recirculating system and prevents backflow. Remember to check for any leaks and make necessary adjustments before proceeding to the next steps of the installation process.
Materials Needed Tools Needed - Check valve - Wrench or pliers - Faucet supply tubes - Tubing cutter - New water supply tubes - Teflon tape (optional)
Testing for Leaks and Purging Air from the Pipes
Once you have installed the recirculating pump on your tankless water heater, it's important to test for leaks and purge any air from the pipes. This will ensure that your system is functioning properly and ready to provide instant hot water without any issues. Follow the steps below to complete this crucial testing process:
Step 1: Turn on the Water
First, turn the water back on and carefully inspect all the connections for any signs of leaks. Check the areas where you have made connections, such as the recirculating pump, water supply lines, and check valve. If you notice any leaks, tighten the connections or replace any faulty parts as necessary.
Step 2: Purge the Air
Next, head to the farthest sink from the water heater and turn on the hot water faucet. Let the water run until you no longer hear any sputtering or see any air bubbles coming out. This process will purge any remaining air from the pipes and ensure a smooth flow of water throughout the system.
Step 3: Check for Leaks Again
After purging the air, check all the connections once again to ensure that there are no new leaks. If you find any leaks at this stage, address them immediately to prevent any further issues. It's crucial to have a leak-free system for optimal performance and efficiency.
By thoroughly testing for leaks and purging air from the pipes, you can verify that your recirculating pump installation is successful and ready for use. Ensure that all connections are secure, and there are no leaks or air pockets in the system before plugging in the power supply to the recirculating pump. This will help you enjoy the benefits of instant hot water and reduced water wastage provided by your tankless water heater.
Setting Up the Pump and Programming the Timer
Now that you have successfully installed the recirculating pump on your tankless water heater, it's time to set up the pump and program the timer. This step is crucial for ensuring that the pump functions optimally and provides hot water when you need it. Follow the instructions below to complete this final stage of the installation process.
Step 1: Plugging in the Pump
Start by plugging the recirculating pump into a grounded 120-volt outlet. Ensure that the outlet is compatible with the pump's voltage requirements. This step will allow the pump to receive the necessary power supply to function effectively.
Step 2: Programming the Timer
The built-in timer in the recirculating pump allows you to schedule the pump's operation according to your hot water needs. By programming the timer, you can save energy by turning off the pump during periods when hot water isn't required.
To program the timer, refer to the manufacturer's instructions provided with your recirculating pump. Typically, you will need to set the desired time intervals during which you want the pump to be active. This can be done using the timer's control panel or buttons. Make sure to adjust the settings according to your daily hot water usage patterns.
https://www.youtube.com/watch?v=6dx0CNv0lw8
Step 3: Testing the Pump
Once you have completed the setup and programming of the pump and timer, it's time to test the system. Turn on a hot water faucet in your house and wait for the water to flow. The recirculating pump should activate, providing instant hot water to the faucet. Observe the pump's operation and ensure that there are no unusual noises or leaks.
If you encounter any issues during the testing phase, refer to the troubleshooting section in the manufacturer's instructions or seek assistance from a professional plumber.
Pro Tip Key Takeaway Regularly maintain your recirculating pump by checking for any clogs or debris that may affect its performance. Clean the pump and its components as recommended by the manufacturer. Setting up the pump and programming the timer are crucial steps in ensuring the efficient operation of your recirculating system. Take the time to carefully follow the instructions provided by the manufacturer for optimal results.
With the recirculating pump successfully set up and programmed, you can now enjoy the benefits of instant hot water and minimize water wastage. The pump will provide you with convenience and energy efficiency, ensuring that hot water is readily available whenever you need it.
Choosing the Best Location for the Pump and Flow Monitor
When installing a recirculating pump on a tankless water heater, it is crucial to select the optimal location for both the pump and the flow monitor. The positioning of these components will impact the efficiency and performance of your system. Here are the installation options for the pump and flow monitor:
Point A: Hot Water Out
One option is to install the pump and flow monitor at Point A, which is where the hot water exits the water heater. This location allows for immediate recirculation of hot water back into the supply lines, ensuring that hot water is readily available at the fixtures. However, keep in mind that this option may require additional plumbing work due to the proximity to the water heater.
Point B: Cold Water In
Alternatively, you can position the pump and flow monitor at Point B, where the cold water enters the water heater. This location offers the advantage of recirculating the cold water to the hot water lines, thereby reducing wasted water. It may be easier to install the components at Point B as it is closer to the existing plumbing connections.
Point C: Return Line
The third option is to install the pump and flow monitor at Point C, which is along the return line. This location allows for efficient recirculation by drawing water from the farthest fixture and returning it to the water heater. It eliminates the need for additional plumbing connections near the water heater and ensures that hot water is readily available throughout the entire system.
Ultimately, the best location for the pump and flow monitor will depend on your specific setup and preferences. Consider factors such as proximity to the water heater, ease of installation, and overall system efficiency. By choosing the most suitable option, you can maximize the benefits of your recirculating pump and enjoy instant hot water whenever you need it.
Inspecting Water Heater Supply Lines and Turning Off Water Heater
Before proceeding with the installation of a recirculating pump on your tankless water heater, it is essential to inspect the condition of your water heater supply lines. Over time, these supply lines can deteriorate, leading to leaks or even burst pipes. Carefully examine the lines for any signs of corrosion, cracks, or other damage.
If you notice any issues with the supply lines, it is advisable to replace them before installing the recirculating pump. This will ensure the integrity of your water supply and prevent any potential leaks in the future.
Once you have inspected the supply lines and ensured they are in good condition, the next step is to turn off the water heater. This is a crucial safety precaution that will protect you from any accidental burns or injuries during the installation process. Depending on the type of water heater you have, you can either unplug it or shut off the appropriate breaker for electric heaters, or turn off the gas or heating oil supply for gas heaters.
Table: Steps for Inspecting Water Heater Supply Lines and Turning Off Water Heater
Step Description Keywords 1 Inspect water heater supply lines inspecting supply lines 2 Replace damaged supply lines, if necessary supply line replacement 3 Turn off water heater turning off water heater
By following these steps, you can ensure the proper functioning of your water heater supply lines and safely proceed with the installation of the recirculating pump. Remember to prioritize safety and consult a professional if you have any doubts or concerns.
Turning Off the Water Supply and Draining the Hot Water Lines
Before proceeding with the installation of a recirculating pump on a tankless water heater, it is crucial to turn off the water supply and drain the hot water lines. This ensures the safety of the installation process and prevents any accidents or water damage.
To turn off the water supply, locate the valve on the cold water supply line leading to the water heater. Close the valve by turning it clockwise until it is fully shut. This prevents any water flow into the water heater during the installation.
After turning off the water supply, it is necessary to drain the hot water lines. This can be done by turning on a hot water faucet in the house and allowing the water to flow until it stops completely. It is advisable to keep the faucet running throughout the installation process to ensure all hot water lines are fully drained.
By taking these precautionary measures and turning off the water supply and draining the hot water lines, you can proceed with the installation of the recirculating pump on your tankless water heater safely and effectively.
Disconnecting the Cold Water Supply Line and Orienting the Pump
To proceed with the installation of the recirculating pump on your tankless water heater, the next step is to disconnect the cold water supply line. This will allow us to properly orient the pump and ensure optimal functionality. Follow the steps below:
- Locate the point where the cold water supply line connects to the water heater.
- Using pliers or a wrench, carefully unscrew and disconnect the cold water supply line from the water heater. Be cautious to avoid any leaks or spills.
- With the cold water supply line disconnected, we can now properly orient the pump. The orientation of the pump is crucial to ensure that the flow of water is in the correct direction. Look for the arrows on the pump and flow monitor, and position them in the direction of flow.
By following these steps, you have successfully disconnected the cold water supply line and oriented the pump for installation. This ensures that the recirculating pump will operate efficiently and provide instant hot water to your fixtures.
Table: Recap of Installation Steps
StepDescription1Shut off the water heater and water supply.2Disconnect the water supply line.3Install the recirculating pump on the water heater.4Install the check valve at the farthest sink.5Test for leaks and purge air from the pipes.6Set up the pump and program the timer.7Choose the best location for the pump and flow monitor.8Inspect water heater supply lines and turn off the water heater.9Turn off the water supply and drain the hot water lines.10Disconnect the cold water supply line and orient the pump.
Installing the Flow Monitor and Connecting the Pump Manager
Once the recirculating pump is securely installed on the water heater and the necessary connections have been made, the next step is to install the flow monitor and connect the pump manager. These components play a crucial role in ensuring the proper functioning and efficiency of the recirculating pump system.
Installing the Flow Monitor
The flow monitor is responsible for detecting water flow within the recirculation loop. It helps regulate the operation of the pump based on the actual demand for hot water. To install the flow monitor, follow the manufacturer's instructions carefully.
Typically, the flow monitor is installed outside the recirculation loop, along the hot water line, before it reaches the fixtures. This allows for accurate monitoring of water flow and enables the pump to activate only when hot water is needed.
Connecting the Pump Manager
The pump manager, also known as the pump controller or pump timer, is responsible for controlling the operation of the recirculating pump. It allows you to set specific times for the pump to run, ensuring hot water availability when you need it most and saving energy during periods of low demand.
To connect the pump manager, plug it into a properly grounded 110-volt outlet. Make sure the outlet is within reach of the pump's power cord and positioned in a convenient location for easy access. Follow the manufacturer's instructions for programming the pump manager according to your desired hot water usage schedule.
By installing the flow monitor and connecting the pump manager, you complete the setup of your recirculating pump system. These components work together to optimize the operation of the pump, providing instant hot water while minimizing energy consumption and water wastage.
Installation Steps Flow Monitor Pump Manager 1 Follow manufacturer's instructions Plug into grounded 110-volt outlet 2 Install outside recirculation loop Position in a convenient location 3 Connect along hot water line Program according to usage schedule 4 Ensure accurate monitoring of water flow Optimize pump operation for hot water demand
Conclusion
In conclusion, the installation of a recirculating pump on a tankless water heater offers numerous benefits. By following the step-by-step guide outlined in this article, you can enjoy instant hot water at your showers and faucets without wasting water. The recirculating pump also promotes energy efficiency, as most models come with built-in timers.
Before starting the installation process, make sure you have all the necessary tools, including a recirculating pump kit, pliers or a pipe wrench, a screwdriver, a bucket, and a towel. It is important to shut off the water heater and water supply, disconnect the water supply line, and securely attach the recirculating pump to the water heater.
Additionally, installing a check valve at the farthest sink ensures efficient water circulation. Once the installation is complete, test for leaks, purge air from the pipes, and program the pump's timer according to your specific hot water needs. Choose the best location for the pump and flow monitor, considering ease of installation and convenience.
By implementing these installation steps and properly maintaining your tankless water heater, you can ensure a continuous supply of hot water while conserving water and energy. Enjoy the convenience and efficiency that a recirculating pump brings to your tankless water heater.
FAQ
What are the benefits of installing a recirculating pump on a tankless water heater?
Installing a recirculating pump provides instant hot water to your fixtures and reduces water wastage. It also offers energy efficiency with built-in timers.
What tools and materials are needed for installing a recirculating pump on a tankless water heater?
To complete the installation, you will need a recirculating pump kit, channel-type pliers or a pipe wrench, a screwdriver, a bucket, and a towel. You also need a 120-volt outlet near your water heater for the pump.
How do I shut off the water heater and water supply before installing the recirculating pump?
You can shut off the water heater by turning off the shut-off valves on the cold water pipe running into the water heater. To shut off the main water supply to the house, locate the main water supply valve and close it.
How do I disconnect the water supply line?
To disconnect the flexible water supply line on the hot side of the water heater, unscrew the connection. If the connection is rigid pipes, the process may be slightly more complicated but still possible.
How do I install the recirculating pump on the water heater?
Screw the recirculating pump onto the hot side of the water heater, ensuring the timer face is easily adjustable. Use plumber's tape on the threads if necessary. Reconnect the hot water line to the recirculating pump.
How do I install the check valve at the farthest sink?
Go to the sink farthest away from the water heater and shut off the water supply. Disconnect the faucet supply tubes and connect them to the check valve. Run new water supply tubes from the check valve to the hot- and cold-water shut-off valves.
How do I test for leaks and purge air from the pipes?
Turn the water back on and check for leaks at all connections. Run water at the far sink until all the air is out of the lines. Make sure there are no leaks before plugging in the power supply to the recirculating pump.
