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Last seen: Sep 20, 2026
So deltaT across rad circuit = 37.9-24.4 = 13.5C. ~5C is what we are looking for. So Im expecting the return from rads to be more like 32C than 24...
Yes. If the pin feels sprung then no problem. If it moves freely then the closing piece (not sure what it's called) may be stuck. A few sharp taps ...
You adjust the end points of the sloped line.you presented earlier. This will be somewhere in the menu, probably the installer menu. I would reduce ...
Yes thanks, good plot Yes initially, but then you turn down the weather compensation curve until the house is at just the right temperature, that...
Situation normal then as @tim441 says you are almost certainly going to have to meddle if you want your system to work efficiently. T...
Black thing looks like (probably) a low loss header combining the output of the two pumps. You will get complete mixing in that which could in princi...
On the grounds that turning the pump speed down didnt help I would put it back up again. Slow flow = higher deltaT across radiators = higher FT neede...
Quite likely not but...with two pumps you have the opportunity to get a very good turndown/modulation ratio and a level of redundancy against failure....
Sorry thats lots of numbers, but no clear explanation what they are measuring. What is needed is the temperatures of flow to and return from the rad...
That's correct. You probably will need to measure flow rate though, spec sheet will likely just be a pump curve.
So heating pipes go from 22 copper to 22 plastic to 28 copper? What a lazy sod of a plumber who fitted the heat pump Would it be practical to replac...
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