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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Jul 23, 2025
Profile Activity
Topics: 5 / Replies: 496
AllTopicsReplies
Reply
RE: Solar Thermal Data Collection

Thank s for the questions @derek-m we have had accumulated heat when we are away for several days. It gets up to 70c in one sunny mid-summer day an...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: Solar Thermal Data Collection

@transparent hi, it’s a DHW cylinder for kitchen, bath, shower etc. In the height of summer we have had the solar relief valve discharge into the cont...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: Solar Thermal Data Collection

Hi @alan-m It was 7 years ago when I set up the solar. It was a diy install. And last autumn the bigger tank was added along with the Ecodan heat p...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: Solar Thermal Data Collection

@alan-m hi, these TD settings are as per the factory settings. Ive noticed that on an overcast day heat will be slower to build so if the TD is lo...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: Solar Thermal Data Collection

As of 2nd April I am now expecting to get all my family DHW and Legionella heating from the sun. That should continue until around mid October. We are...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: Vaillant flow rates, Delta T, buffer sizing - trying to get ASHP running well but hit a brick wall.

Apologies for late arrival to this thread. Accepting the obvious and hidden problems with this installation… Is it fare to say it may be easier to p...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our 11kW Ecodan and its inconsistent data...

@derek-m another query I have in the back of my mind is how the energy consumed by the immersion heater is being calculated. in certain circumstance...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

The attached sheet came from the Ecodan Data files Posted by @mjr ( thanks for that) And is for the Ecodan PUZ-WM85-VAA Can anyone explain. This...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My Mitsubishi ASHP has used 1078kWh from 25 November to 31 December – Help please

Hi @Harriup i thought I ought to add some comments on this for Sarah to consider. Theres a good reason why there is a flow rate range quoted, and ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to set the warm end of the weather compensation curve when it's not warm

On reading about your large windows and solar gain - there is usually other times of the day or on exceptionally cold day when large windows - even tr...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

Thanks for info @william1066 and @kev-m interesting article. Also flow volume for our Ecodan 8.5 are easily met. Rad volumes = 111 litres 28mm ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

HI Mike Can you point me in the direction of the article you refer to above. Also - when removing a LLH, is there a way of calculating the require...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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