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Secondary Circulation

If there is a significant delay from turning on your hot tap to actually getting hot water, then secondary circulation should be a considered. This is often necessary in larger installations with longer pipe runs. The water contained within the pipes needs to be drawn off, (and typically wasted!) before the hot water gets to the outlet. Furthermore, the newly replenished hot water in the pipe will again cool down, only to be drawn off again the next time the tap is used. This is inefficient and encourages water wastage; a volume of water is heated, allowed to cool and then drawn off.

This can be overcome by installing a secondary hot water circuit, which works by circulating hot water around the property close to the outlets in the bathrooms and kitchen. This hot water is pumped around the system ensuring that whenever you turn on a tap, the hot water is almost instantaneous. A bronze or stainles steel circulation pump is used, and this may be controlled on a timer, a pipe stat (to measure the temperature of the water), or by other methods.

Hot water secondary circulation circuits are best designed into new hot water systems where required, but can generally be retro-fitted to depending on the existing pipe layout and design.

It's important for any exposed pipe work to be well insulated in-order to minimise any unwanted heat loss due to the circulating hot water.

Please feel free to contact Megaflo Unvented to discuss you requirements or to arrange an on-site survey.

Call 01252 311003
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