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ASHP-BOBBA
@ashp-bobba
Member Professional Installer
Prominent Member
Joined: Dec 6, 2024
Last seen: Jun 4, 2026
Topics: 2 / Replies: 487
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RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

Yes, I have seen "many times" where the indirect coil connections raise up but no air bleed, it only takes a small amount of air in the line to effect...

4 months ago
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RE: Underfloor Heating Installation Issues with Heat Pump

Just one more thing to add, the best UFH is thick screed, next is overlay and next is deflector plates, my advice is if they are looking to give you 5...

4 months ago
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RE: Underfloor Heating Installation Issues with Heat Pump

These deflector plates are very soft, you can cut them with sharp taylor scissors, sheers or cheep drill nibler. I even found that for you 🙂 as y...

4 months ago
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RE: Underfloor Heating Installation Issues with Heat Pump

@maximumdo this one has 200mm centres so you could trim the plate to 70mm each side (70+200+70= 340mm) of the pipe so they overlap by 20mm to...

4 months ago
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RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

I don't know the Grant system but this is common when there is air trapped in the tank circuit which causes the water to have reduced flow and reduced...

4 months ago
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RE: Underfloor Heating Installation Issues with Heat Pump

To add, you will probably find the UFH brand they used sells a spreader plate application to suit the pipe, if not I think as standard they take a 16m...

4 months ago
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RE: Underfloor Heating Installation Issues with Heat Pump

You must heat a mass when using UFH, the only alternative I can think of if you do not use a mass like screed is to use deflector plates that clip the...

4 months ago
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RE: Ecodan new build install - zoning question

@darlomrh, not quite, it is normal to set the unit up so that each wireless stat can energise the Ecodan and run any single zone, usually there would ...

4 months ago
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RE: Ideal HP290 14kW ASHP - how to optimise

Perfect this looks like Easy MCS format: so they have design you for 50 flow at -3. So what I advised you 47at -3 is a good start.  

4 months ago
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RE: Ideal HP290 14kW ASHP - how to optimise

Great, rads are good, the curve i gave you is more of a rads design. Try that and see how it goes.  

4 months ago
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RE: Ideal HP290 14kW ASHP - how to optimise

@cmartinbwmba No, sorry, I am asking do you have a document that looks simular to what i posted that will show you the design for your home, what i po...

4 months ago
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