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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: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

csn you post the pictures again, but just have flow temperature and return temperature showing. this is the important temp in the primary flow snd ...

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

I’d also listen to James, he gives good advice. i didn’t mean to concern you, and I’ve seen the 14kw zubadan modulate quite low on heat pump monitor...

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 house is 130m2 and you have a 14kw mitshi machine....... I would be staggered if it wasn't oversized. that's 107w/m2. that's a re...

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 Hi, this is all tricky. One thing I wold say is to give the house time. When running the heating very low and slow, it can take...

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

@gary yeah, more than that. about 1000-1200w, ive never really seen it go below that. and that's with the compressor bumbling around 30hz,

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

@gary 11.2kw for 260m2 house. its tight on the heat loss at the cold end, but in mild and a bit cold weather, works well

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

@gary i can see a blending valve on the manifold though. Whats that set too? and here is my floor ticking over at 27ish degrees

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 you've got a 14kw in a 130m2 well insulated house. I think you might be oversized there too. I've an 11.2 KW heat pump in 260m2 average ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@sunandair This is about as good as I can do

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?

@sunandair sure, happy to make a sketch. I think I have done one somewhere but I’ll try to do a prettier one. I think my system is working generall...

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?

@sunandair my graphs look similar on my ecodan. And when you make it 2 defrost and hour...... you can see how they struggle

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?

@jamespa Hi James, on this topic: you've given good advice to me in the past and I'm working through things with my heat pump set up with th...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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