What is the device on top of my water heater?

What is the device on top of my water heater?

The Expansion Tank. When sized right and installed correctly, it’s the expansion tank’s job to take on this “extra” water caused by thermal expansion. This device sized, tuned, and installed correctly minimizes excess pressure caused when water expands from being heated. Okay, so that’s the “what”.

What is a hot water recirculation loop?

Near the water heater area, a recirculating pump pulls the water from the furthest fixture back into the water heater, creating a loop. This loop keeps hot water going throughout the house so when a fixture is used, hot water is right there.

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What does a water heater control device do?

The device controls the operation of a gas valve that regulates the flow of gas to the burner to heat the water and automatically opens a relief valve in the event the internal pressure or temperature of the tank exceeds certain limits. Additionally, the device allows the tank to be manually drained there through.

How does Rinnai CIRC logic work?

With built-in Circ-Logic, the water heater decides (based on time intervals and current water temperature) if the pump can turn on. If the water heater accepts the request to start recirculation, the pump turns on and runs for five minutes or until the water temperature is reached (whichever occurs first).

Where is the anode rod on my water heater?

The anode rod will be located on the top side of the unit. In some cases, it may be directly connected to the hot water outlet line on top of the heater.

What is the valve on the side of the water heater?

On the side or top of your water heater tank is a valve connected to a metal or plastic discharge tube pointing downward. The valve is called a T & P valve, or TPR valve, for temperature and pressure relief. If all goes well, a TPR valve never gets used intentionally except during testing.

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How do hot water loops work?

Recirculating loops ARE a water-saving feature. But if you’re not careful, they can waste a LOT of energy. And homeowners will be paying for these loops every month on their utility bills as long as they own the home.

What is a circulation loop?

The heart is what drives our blood through our blood vesssels. Our heart has two “loops” of circulation. One loop, which is driven by the right side of the heart, is called pulmonary circulation, and travels to the lungs and back to pick up a fresh supply of oxygen.

What is a water heater thermocouple?

The thermocouple is a thermoelectric device that shuts off the gas supply to the water heater if the pilot light goes out. Its function is simple but very important for safety. The thermocouple generates a small amount of electrical current when it has been heated by the flame.

Where is the thermocouple on a gas water heater?

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The thermocouple is attached near the pilot light along the burner assembly, with the two ends of the metal placed in the flame of the pilot light, and the other end attached to a shut-off valve for the natural gas line that feeds gas to the burner.

What does recirculation do on a tankless water heater?

Recirculation accessories enable your home to have hot water, faster, when you need it. Solutions include tankless water heaters with built-in pumps or units that can have a pump added. Homes with no dedicated return line can have a thermal bypass valve added to the cold water line for recirculation.