Tankless water heater recirculation pump

The tankless water heater recirculation pump is widely used in many homes and industries because it meets their “hot water” needs.

It works by means of a recirculating pump for tankless water heater, which prevents the water from stagnating, cooling down and having to be heated again.

We can say that these hot water recirculating systems are very energy efficient, so they are very convenient.

In this article we will talk about the recirculating pump for tankless water heater diagram, what is tankless water heater recirculation pump and the advantages it has.

What is a tankless water heater recirculation pump?

A recirculation pump is an optional electric pump that is integrated into a home’s potable water service or system.

Its main function is to prepare hot water without having to use an instant hot water heater.

A recirculation pump for tankless water heater is a system that includes:

  1. Tankless water heater recirculating pump: pump and heater can be placed together or separately.
  2. Recirculation method: performs a sink hot water recirculating which acts as a third pipe, apart from the hot and cold pipes.
  3. Method to control the circulation pump: it is achieved with a thermostat that allows you to control the pump and maintain a constant water temperature.

Unlike those using a storage tank, tankless recirculation systems heat the water through a heat exchanger.

Tankless water heater recirculation pump diagram

To understand a little more about this system, we will show the tankless water heater recirculation pump diagram:

Tankless water heater recirculation pump

Advantages of tankless water heater with recirculation pump

The tankless water heater with recirculating pump has many advantages, one of them is its convenience, because you don’t have to wait for warm water in the morning to take a shower.

Its installation and operation costs will allow you to save money for a long time. But, these are not the only ones, the other advantages that the tankless water heater recirculation pump has are:

Fast hot water

Move the faster hot water to your showers or sinks.

No water waste

Push the cold water lines back to the tankless water heater.

Automatic on/off

The navien tankless water heater with recirculating pump allows you to turn on or off any faucet in your home or wherever it is installed.

Pump is installed per water heater

Many people make the mistake of installing under the sink, which is a big mistake, it should be installed by the water heater.

Uses water heater power outlet

The recirculating pump tankless water heater does not need other outlets, since it uses the one it comes with.

Will a recirculating pump work with a tankless water heater?

Hot water recirculating pumps can work with a tankless water heater, because the process it performs is the one that allows the water to be reheated and the cold water does not run out of its fittings.

The rinnai tankless water heater with recirculating pump comes with everything included, making installation easier.

In order for the recirculating pump with tankless water heater to work properly, a place where water is trapped will be needed.

There are two options for this:

  • Dedicated return line: is a pipe that returns unused hot water to the tankless water heater. This water is returned by means of a cold water line through the installation of a circuit at the fixture furthest from the site.
  • Crossover valve: is a device that is installed on your farthest fixture so that it can be connected to the hot and cold water lines. It does not require a return connection to the rinnai tankless water heater recirculation pump. This is an expensive process, so you should check Price before installing.

Where do you put a recirculating pump on a tankless water heater?

Water heater recirculation pumps should be placed before the first hot water lateral.

The pump volute can be installed in either vertical or horizontal orientation, but the green part of the pump volute should be installed in horizontal orientation only.

Is a recirculating hot water pump worth it?

The best recirculating pump for tankless water heater as it saves money and many gallons of water, it is worth having.

These save up to 1,000 gallons of water per person per year and reduce the amount of energy by up to 50%, as the other types of pumps use the energy of two conventional refrigerators.

There is no doubt that every home should have a tankless water heater recirculation pump.

How to install recirculating pump on tankless water heater?

Before installing the recirculating pump on tankless water heater you must install the supply lines:

  • Cold water line: must be located in the piping that is the only supply the tankless water heater will have. In case it supplies water to any other fixture, it may cause a false activation in the pumping system.
  • Hot water line: they are installed in the hot water line coming out of the water heater and entering the house. It is not required to be located next to the water heater.

To learn how to install recirculating pump on tankless water heater you must follow these steps:

  1. Choose the appropriate site to install the pump and flow monitor, mentioned above.
  2. Turn off the water heater.
  3. Shut off the water, i.e. the supply line.
  4. Drain the water lines, for this you must remove the water drain valve caps and turn them so that the water drains.
  5. Cut the hot or cold line and install the pump and flow monitor.
  6. Turn on the water when all connections are complete.
  7. Connect the pump and flow monitor.
  8. Plug the pump into 110v power.
  9. Test the pump operation, open the faucet to see if hot water comes out and if the pump turns on and close it to see if it turns off.

However, you can follow the tankless water heater with recirculation pump manufacturer’s instructions.

How much does it cost to add a recirculating pump to a tankless water heater?

At IndusCo you can request a tankless water heater recirculation pump price quote, where we solve all your doubts without problems.

Our specialists will advise you when making a purchase so that you make the best choice and get the best price.

We cover different global markets, so you will have a wide variety of high quality valves and pumps to choose from.

Warehouse, IndusCo United States

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