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Water Heater

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Water Heater Model Numbers & Rating Plates

Sometimes, finding your water heater model number can be tricky. But, all water heaters have a Rating Plate that lists important data such as the model and serial numbers, manufacturing company’s name, length of the warranty, the wattage of elements installed (on electric models), gallon capacity, input BTU rating (gas models), and more.

New Nobel brand or Fresh brand water heaters have an easy to understand rating plate. It includes the manufacture date, as well as information on the size and capacity.
On older models, you can determine the age of your unit by decoding the water heater serial number. Some manufacturers, including Nobel and Fresh, has made it easy by incorporating the month and year built into the first 4 digits of the serial number. Other manufacturers use different formats but in a similar fashion.

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What is the purpose of a calorifier tank in hot water systems?

How do Calorifiers work and what are they?

A Calorifier is an indirect-fired water heater to provide hot water in a heating and hot water system. Indirect fired means the water heater does not contain a burner. It is a storage water cylinder with one or more heat exchanger coils which contain hot liquids (water or solar fluid).

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As an indirect fired water heater cannot produce the heat itself due to the missing burner, it relies on an external heat source such as e. g. a boiler or solar collectors. These heat up the liquid in the heat exchanger coil which in turn heat up the water contained in the vessel.

Learn more about the pros and cons of Calorifiers and direct-fired water heaters in our indirect vs direct hot water systems knowledge article.

When should I use a Calorifier in a commercial heating system?
Indirect-fired water heaters still rely on another source to heat up its coils which means it cannot react as quickly to demand as a direct-fired water heater. In the past, it was necessary to have a dedicated hot water boiler to heat the Calorifier. However, due to increased efficiencies, modern boilers can easily supply heat to a Calorifier and the heating system.

Want to know more?
We go into detail about direct- vs. indirect-fired water heaters on this page, but Calorifiers are used generally where hot water demand is not exceptionally high and a slower heat up time is sufficient to satisfy the hot water requirements. They are more cost-effective than direct-fired water heaters but also more prone to heat loss.

Calorifiers | Hot water calorifiers | Calorifier system | Calorifier water heaters.

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ECOTHERM; The Future of Renewable Products in UAE

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Solar Water Heaters

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Solar Steam and Cooling through Hybrid-System

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