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bontwoody
bontwoody
@bontwoody
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Noble Member
Joined: Mar 5, 2022
Last seen: Aug 20, 2025
Profile Activity
Topics: 29 / Replies: 808
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RE: ASPH Sizing Confusion

@fazel Hi, Ive been playing around with the WC Curve. Currently set to 38C @ 17C OT and 45C @ -2C OT. I havent had a cold enough day yet to test the l...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Legionella cycle: Heat Pump or Immersion Heater?

@MikeFl When I was looking at legionella cycles a while back, I found a lot of variation in opinion regarding how often to run the cycle. Regs say o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Real world connection to a heat pump over modbus

@toodles I quite like the look of homely but dont see why they insist on having to pay an installer just to connect it?

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Say hello and introduce yourself

I think this is a good way to do our bit for the planet, everyone we persuade is another convert. I was planning to reach out on social media to anyon...

2 years ago
Forum
Introductions, Forum Rules & Updates
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RE: Real world connection to a heat pump over modbus

This will be very useful thanks, Its on my list to connect my Samsung up so I can adjust it programatically.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Areona 17kw questions/concerns

Hi Daniel, I find Openenergymonitor very good although you would need to install a heat meter into your HP circuit. You can see the types of output yo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Which is more efficient Solar Diverter to Immersion/Hot water cylinder or Combi Direct Hot water on demand?

@DoubleSpeed Im assuming you are talking about a gas combi boiler? When you say efficient do you mean most cost effective? The greenest option is ...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: ASPH Sizing Confusion

@iancalderbank Realised that I would have to get into the control panel right after posting 🙂 I remembered that when I changed pumps, I had to alter...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

@fazel "Can you set the flow rate to stay high/fixed to see what difference it makes? Even if you will see a lower dT." I think its possible, but ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

There sure are a lot of variables to consider here! 🙂

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

@fazel Agreed, but the highest COPs are clustered around the 9kW load so shouldnt we aim for the mode output to be in that region?

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

@fazel Ah, I see, that would account for what appears to be a smaller delta T at the lower temperature. Does the increase in off cycles negate the p...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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