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DavidAlgarve
@davidalgarve
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Reputable Member
Joined: Dec 1, 2023
Last seen: May 28, 2025
Profile Activity
Topics: 18 / Replies: 89
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RE: Effect of buffer tank or volumiser on heat pump system

Thank you very much for reminding me, Derek. My installer of choice, here in Portugal, is rather sceptical so I have to be persuasive. I am attaching ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Effect of Buffer tank or Volumiser

Apologies for re-introducing this topic. I was persuaded by contributers on this forum, that I should remove the second CH pump and change the functi...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hot water circulation

My DHW tank (heated from an ASHP) is on to ground floor and water displaced from the hot water feed pipework, would be pushed along the cold water pip...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hot water circulation

Thanks Ian. The type of purpose-made unit I have in mind is on many YouTube videos and is fitted with T's into the hot and cold supply under the sin...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Hot water circulation
1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 4
Views: 820
Reply
RE: Slash Your Heat Pump Bills Overnight

The maths attached to a cost analysis of this approach sounds daunting. It seems to me that there are two variables that would need to be evaluated...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thanks Gary. That is a new, and interesting bit of inside information that I am pleased to learn. I think this may be useful in balancing the radiator...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

I am finding that this topic is becoming more complicated than I can handle. As I understand the Ecodan Hydrobox, it has a single pump with 5 speeds...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Derek M is correct in that the Ecodan has a 5 speed pump and this is currently set at max of 5. I was just hoping for a meaningful measure of performa...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

By "taking the buffer tank out of circulation" I mean removing the secondary pump and using the buffer tank just as a volumiser

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thanks JamesPa - have only just picked this up. I have the contractor visiting who is primarily a solar installer but he added the DHW system and I ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thanks Derek M for the further update. I have approached the contractor that installed the DHW system (including the 3 way valve) and he will make the...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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