What is 'hot water priority'?
- Thread starter jon26
- Start date
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Hot water priority, if there is a demand for hot water & heating, the hot water is heated first.
What I have in my house is heating priority & if i want the water i just turn the central heating stat down. works for me.
What I have in my house is heating priority & if i want the water i just turn the central heating stat down. works for me.
The most obvious use of 'hot water priority' is in combi boilers. This means once a flow sensor detects a demand for water (tap opening) it diverts this flow to the heat exchanger (secondary) and shuts off the flow of water on the heating side. So the boiler is now heating hot water rather than radiators
a 3 port diverter valve also gives hot water priority-not the 3 port mid position type.
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it just gives priority to hot water over heating when both are calling or required at the same time. so not a good idea in a large household in cold weather! that's why the 3 port mid position or 2 x two port valves are more popular than the old 3 port diverter valve that always gave hot water priority.
on open vented systems: you could have a smaller size boiler with an old 3 port diverter valve as the boiler only had to cater for the heating side and not the possibility of both heating and hot water demands on together. other than that there is no real advantage of it.
on open vented systems: you could have a smaller size boiler with an old 3 port diverter valve as the boiler only had to cater for the heating side and not the possibility of both heating and hot water demands on together. other than that there is no real advantage of it.
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