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davidnolan22
@davidnolan22
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Joined: Jan 15, 2025
Last seen: Jan 7, 2026
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Topics: 0 / Replies: 136
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@gary I get where you’re coming from. But I don’t think you’re undersized . You’re trying to cram in all the heat your house needs into certain peri...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Hi, I'm saying this from my experience, not as a heating expert: Your compressor is turned off for too long periods. You may think the UFH is at ...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@gary how much UFH and how much rads are you? Whats your screed depth and pipe size?

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@jamespa yeah, i agree. The time required to fine tune a system is not economical. I absolutely understand why heat pump companies oversize, stat ...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@jamespa yeah, I agreed. My son’s bedroom is on the ground floor with his sisters room above. I need to keep his room all night to over 20 so the fabr...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@jamespa yep, and this is what I'm doing it's the eveness of the spec. If your going to oversize, do it evenly. BUT, and it's a big BUT, having...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@gary Its not the integral tank, so I have a separate pump. My data from the second 1/2 of the winter is that 11.2 should be OK to cover this ho...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@sunandair I can't get my system higher than 35 or 36 degrees, The only way to do that would be to start to close more of the secondary system off.

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

@sandman1600 What I mean is, your UFH power is 79wm2 I think, at mean water temp 50, so in your house that is 9. something kw of power. they desi...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

@sandman1600 If your heat loss is really 14, and your UFH capacity at mean water temp 50 is 9kw, if they are right, the the pump won’t be your prob...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

More like “the heat loss report is the heat loss report” The actual heat loss, well, you’ll have live evidence. if increasing primary flow withou...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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