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Some Important Facts of Unvented Hot Water Cylinders

Some Important Facts of Unvented Hot Water Cylinders

Julian Sanchez / May 9, 2019

Unvented hot water cylinders are becoming very popular day by day, and these devices can be seen in most of the homes. These water cylinders are directly connected to the respective mains water system, and thus these devices can make sure that abundant amounts of hot water have been stored and available on-demand.

This type of hot water cylinders performs its work at mains pressure for providing the facility of incredibly higher rates of flow. As a result, you can experience incredible shower as well as bath performance throughout the year.


What is the Work Structure of Unvented Hot Water Cylinders?

When it comes to an unvented system, you won’t get the facility of a cold water tank. In case of a sealed cylinder, the input is directly given from the respective cold water mains.

Moreover, an unvented cylinder is maintained under pressure from the specific incoming water supply. The heat is provided by immersion heaters (also, known as a direct model). Alternatively, the source of heat is placed outside the particular vessel like a wet solar system or boiler, also known as an indirect model.

This type of cylinder would be featured with outlet pipework that will be made a connection to it, which works for distributing the particular heated element of the specific hot water cylinder to a number of outlets throughout the household. When shower, tap, or any other outlet get used, the incoming cold water’s pressure replaces the whole hot water content within the respective cylinder in the direction of the open outlet with mains pressure.

Unvented hot water cylinders have come “sealed” in nature. And that’s why they have a requirement of an expansion vessel. Such vessel should be either adjacent to or included within the respective cylinder or boiler. Moreover, an expansion vessel also enables the water expansion within the system when it starts heating up. This vessel can also accommodate the pressure enhancement by at most 4.5 bar.

The unvented cylinders have been designed to bear significant internal forces. However, these cylinders are incredibly safe for use when properly fitted with each and every right pressure equipment sets. These are basically manufactured with stainless steel because of the increased tensile strength, which can be acquired from a properly thin sheet.

What are some of the benefits of Unvented Hot Water Cylinders?

Unvented cylinders accommodate a small space in your space, and so you don’t need to think about any big space before getting one installed. These cylinders can put powerful pressure in water, as compared to their counterpart- open vented system. It’s due to that the mains directly supply unvented cylinders. And obviously, it’s based on the power of the respective mains at the first place.

Moreover, these hot water cylinders don’t have a requirement of a feeder tank within the loft. And thus they can present you with a lot of free space in your place. These cylinders don’t depend upon gravity for functioning. That means you can easily get these cylinders installed almost any of the spaces in your home.

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