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Could anybody identify this for me please ( the silver box), it's on a santon premier plus pp210b calorifier, is it a pump?
Thanks
Andy
Last edited:
Discuss Identification help please in the Plumbing Jobs | The Job-board area at PlumbersForums.net
Hi Andy , no pic , have another go
3 port valve
Nothing Shaun, i'm starting out in risk assesment and looking at water heaters and trying to learn as much as i can by self tuition,cheerswhats the fault / wrong?
Nothing Shaun, i'm starting out in risk assesment and looking at water heaters and trying to learn as much as i can by self tuition,cheers
Yes that is correct but that is not just or a boilerThanks just googled it and i understand what it is now, am i right in thinking on this boiler it would be sending water to the boiler and then two or one other places such as hot water and hot water for heating
View attachment 39486
It’s not a case of liking a three port on unvented it’s not to regs full stop.1. As others have said, its a 3 port motorised valve.
2. If the controls call for hot water, it will divert the hot water from the boiler to the coil within your unvented hot water cylinder.
3. If the controls call for heating, it will divert the boiler's hot water to the space heating system (radiators and / or underfloor heating).
4. If the controls call for hot water and heating, it will send part of the boiler's hot water to each.
5. I don't like 3 port valves on unvented cylinders, as they may not cut the supply of hot water to the coil off. I prefer to see two 2 port valves, or an additional 2 port valve for the cylinder.
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