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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Topics: 7 / Replies: 4403
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RE: Observation about radiators and weather compensation

@cathoderay From the dimensions your PHE could be an LA34, the problem is it can be constructed having a different number of plates. Could you ask y...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay I agree that the graphs are far from ideal, but they are not scaled because they relate to a range of different sized pumps. Maybe they ...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay I have had a look at the details for your water pump, with the following results. Taking the model number, the 25 indicates the size o...

4 years ago
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RE: Electricity price predictions

@jeff Whilst I fully understand the need for companies to purchase supply ahead of time, I still wonder if some traders have been taking advantage o...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay Which way is the flow through the pump? Is it pushing the water into the PHE or pulling it out? Could you accurately measure the dista...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay Thanks for the photo, I will have a look at the manual. Have you checked that the two valves on the inlet and the outlet of the pump a...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay I sent an e-mail to Hexonic asking how to identify which model of heat exchanger you have installed. Obviously it is the weekend, so don...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay Many years of fault finding on highly complex systems has taught me to carry it out in a logical and systematic manner. Obviously fault ...

4 years ago
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RE: Observation about radiators and weather compensation

@cathoderay Rather than closing the lockshield valves, which will mean having to re-balance the system, it would be much easier to close the TRV's. ...

4 years ago
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RE: Heat pumps & dry air leading to sinus problems and headaches?

Hi, It might be worthwhile buying a humidity meter, so that you can see if it is too high or too low. You can then experiment with methods of gettin...

4 years ago
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RE: Vaillant Arotherm Plus not kicking in for DHW

Hi Stepht83, Did you manage to resolve your DHW issue? Feedback is always welcomed.

4 years ago
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