Electric Tankless Water Heater Diagram

When you have a tankless water heater, it can be difficult to understand how they work. They are more complicated than standard water heaters because they don’t have a tank. Tankless units heat water as soon as it is called for, rather than storing hot water until it is needed. This means that you need to be able to understand the tankless diagram so that you can troubleshoot and repair it when problems occur. In this article, we will go over the basic components of a tankless water heater and give an understanding of how they operate. You may think that since these units don’t have a tank, there aren’t many parts to them – but you would be wrong! These units are tricky to understand because there are several components that come together in order for the unit to function.

Electric Tankless Water Heater Diagram

Things to Know Before Reading the Tankless Water Heater Diagram

There are many different types of tankless water heater systems. They all have differences in how they work, and therefore the components that are used are also different. The box type, which is the most common, is a gas-powered unit. It uses gas as a fuel source and has an electric ignition. The unit has an internal fan and an internal pump. The difference between these units is in the heating element and the wiring. The other types of tankless water heaters are the or the J-type, the E-type, and the H-type. The only difference between these types is in how the water is heated and how it is stored. There are two types of tankless water heaters: on-demand and continuous flow. On-demand water heaters heat water when it is called for. Continuous flow water heaters are always heating water, but it is not being stored. Continuous flow water heaters are used in places like swimming pools and hot tubs.

Elements of a Tankless Water Heater

There are several components that make up a tankless water heater. We will go over each so you can understand which part might be malfunctioning if you are experiencing problems. Burner – The burner is the part of the system that heats the water. It uses gas as a fuel source and produces a flame that heats the water as it travels through the water heater. Ignition System – The ignition system is used to start the gas flow and to ignite the burner. Pressure Switch – The pressure switch monitors the pressure inside the water heater. If the pressure becomes too low, the switch will open and stop the water flow. Temperature Switch – The temperature switch monitors the temperature of the water. If the water becomes too hot, the switch will shut the water heater off. Flow Switch – The flow switch monitors the water flow. If the water flow becomes too low, the switch will shut off the water heater.

Why are There So Many Parts?

There are many parts in a tankless water heater because it is designed to be fail-safe. There are two main reasons that these parts are there – to ensure safe operation and to shut the water heater off if there is a problem. Since you aren’t storing hot water in a tank, there is no place to put the water that is not being used. Therefore, there are sensors and switches that will shut the water off if there isn’t enough flow. There are also pressure valves that will shut off the gas flow if there is too little pressure. There are also sensors that will shut the water heater off to keep the water temperature at a safe level. These are there to help protect the people and the environment.

How a Tankless Water Heater Works

A tankless water heater works by heating water as it is needed. It does not store water, so it is best for areas where you have a low flow rate. If you have a high flow rate, it would take a long time for the unit to heat enough water for your use. In order to operate, the tankless water heater has to be connected to a source of gas. When the water is needed, the gas valve is opened. The gas flows into a burner where it is ignited. As the gas is flowing through the burner, it heats up a metal coil. The metal coil transfers the heat to a liquid that is inside the system. When the metal coil becomes hot enough, the flow of gas is stopped and cooled down. The hot liquid is sent to the top of the tankless system where it is distributed to the faucets.

Solid-State Relay (SSR)

A solid-state relay is an electrical switch that is used to control an electric load. It is an electrically controlled switch that is used with a timer to control hot water production. They are connected to a thermostat or a pressure switch and usually come with the parts you need to hook them up to a tankless water heater. The water heater will turn on when the water is needed and then turn off when the pressure switches have closed. A solid-state relay is a semiconductor device that is used to control a larger electrical load. It is made of an electrical switch that can be controlled by a timer or temperature sensor. A solid-state relay is used in a tankless water heater to control the flow of electricity to the heating element. This will allow the water heater to heat water only when there is a need for hot water.

Electronic Commutator (EC) and Electronic Expansion Valve (EEE)

An electronic commutator is an electric device that is used in water heaters to reduce electrical current. It is used in combination with an electronic expansion valve (EEE) to control the flow of gas through the water heater. The E-coil is used for larger water heating systems, while the EC is used for smaller systems. An electronic commutator is a device that is made up of several components. It consists of a rotating switch, solenoid valve, and electromagnetic coil. It is designed to regulate the flow of the gas that is being used to heat the water. An electronic expansion valve is an electrical device that is used to control the flow of the gas in a water heater. It is usually mounted near the bottom of the water heater. It is used in combination with an electronic commutator to regulate the flow of the gas through the water heater.


Tankless water heaters are more complicated than traditional water heaters. This is because they don’t have a tank, so the water can’t be stored and heated in advance. This means that the water is heated as soon as it is needed and the pressure and temperature sensors have to be sensitive enough to shut the water heater off before it overheats and damages the unit. If you understand the tankless water heater diagram, you can see how each piece is important to the operation of the water heater. The pieces work together to keep the water at the right temperature and pressure and shut off when there is a problem.

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