Element: Cylinder Sizing Guide

Lloyd Preston

2 May 2018

This know-how video, hosted by our Director, Daniel Freeman, discusses how factors such as the property’s capacity, demand, number of outlets, and any restrictions need to be considered when deciding what size hot water cylinder to use.

At Dutypoint, our Element hot water cylinders are designed for boosted hot water systems in high-end residential and light commercial properties with a greater demand for high pressure and flow.

Learn more about our Element hot water cylinders today.

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Selecting the correct capacity unvented hot water cylinder can sometimes be a challenge. This short video aims to answer some of these questions.

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So, the first thing to consider when selecting the correct cylinder would be the capacity required, the volume of the cylinder, and this would depend on the

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amount of usage, the amount of outlets, showers and baths etc throughout the property. Another consideration we have to bear in mind is the potential varied demand. So, a large property could sometimes just typically have just a couple residents, but then the ability to

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throw functions for a large amount of guests, we still have to ensure that the whole usage will be covered. We now need to consider the pressure requirement for the cylinder. Typically we have two ranges from 0 to 4.5 bar then 4.5 to 6 bar, which will

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cover for properties of up to eight to ten stories. We need to calculate what the static height above the cylinder is to ensure we get correct pressure through the building and especially on the top floors. We also need to consider any space or access restrictions. We have

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a horizontally mounted option if there’s any height restrictions and we can also link multiple units together to create the correct capacity. So, just to summarise, to calculate the capacity required we need to know the number of hot water outlets within the property and

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any potential varying demand for the pressure requirement, the static height above the cylinder, and we also need to take into consideration any space or access restrictions and with this information we can specify the correct cylinder for you.