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Last seen: Sep 19, 2024
@cathoderay In my opinion 'cycling' is not the same as 'setback'. A heat pump cycles to prevent the IAT from increasing too high, whereas a setback ...
Hi Ray, I actually didn't state that using setback would be a mug's game. Please don't miss quote me. Any reduction in IAT will reduce heat loss, ...
Based upon the data table for an 8.5kW Ecodan, running at maximum output at a LWT of 45C, it should require approximately 2.7kW of electrical energy. ...
Can you provide closeup photo's of your zone 1 heatmiser in the on and off condition. You need to educate your guest about heat pumps.
I would suggest that you ask your installer to rectify the problem. Once the on - off problem is resolved, you may wish to consider operating your sys...
Looking at the data tables for a 8.5kW Ecodan, your heat pump was probably running at full output and developing something in the order of 10kW of the...
@jamespa Hi James, You are indeed correct, the WC 'curve' is a straight line calculation based upon the values in cells I5 and I6 and K5 and K6. ...
I would suggest that you check the setting of the upper limit for the LWT in the controller. Do you have any of the following in your system? Buffer...
@cathoderay I suspect that the second increase in LWT occurs after your heating system and heat emitters are fully up to temperature, hence the RWT ...
@sunandair What is the water flow rate? It would be interesting to see what effect reducing the flow rate would have. Also what is happening with ...
@jamespa Hi James, I have now completed a WC version of the modelling tool, which I think works quite well. If you have the time and inclination...
Having read the blog and watched the video, it has convinced me to never buy anything from grant. 🙄
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Degrees of Separation
Latest Posts
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RE: Has anyone seen this problem before? Huge anticycling times
Mine was replaced as they couldn’t fix and couldn’t ide...
By cg360 , 6 hours ago
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 8 hours ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
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By JamesPa , 15 hours ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
One of the other mods has just reminded me that @ashp-b...
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RE: Electricity price predictions
So a final update on Charge Pack, now I have nearly rea...
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RE: Indevolt Batteries UK Support & Info Thread
My ideal install would have my battery installed before...
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RE: PV and battery long payback - sense check query
@old_scientist I have now drafted 2 replies - both have...
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
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RE: Acond heat pump failed after four years - diagnostic quote £940 plus VAT
@downfield Thank you Downfield. This sounds potenti...
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RE: Digest of UK Energy Statistics
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