Last seen: Jul 9, 2025
Thanks for the comprehensive write-up, I am considering the same unit. Do you know what the turn-down or minimum modulation is on the unit and roug...
As far as I can tell my vented system would have a peak pressure of about 0.5 Bar, which technically does meet the absolute minimum pressure of the AS...
Thanks, this is what I was thinking about, so as long as heat energy can transfer back through the PHE into the primary circuit during defrost, then t...
@jamespa I don't understand any point in an air test, if that fails, then the pipes are then broken, and the system cannot be refilled without digging...
@jamespa I hope I'm wrong but I suspect you will get an error code if it gets too low. Vented systems are so much simpler, it would be nice if heat ...
Yup, I see no reason to artificially pressurize low temperature heating technology, but as far as I can see that's the method most Heat Pumps follow. ...
@jamespa nothing to do with the needed pressure. Current pipework is likely 60 years old, buried in concrete and as such in an unknown condition. C...
It seems to be saying that by separating the systems, then glycol usage can be reduced. I've heard about maintenance issues with anti-freeze valves,...
Thanks, so yeah yours is quite oversized, we are the opposite, we need to keep the huse warmer than the standard.
@judith where it does start to make a differnce is installation cost and noise. Thanks for your reply.
@carpenterstation sounds like what I'm afraid of, hopefully you can get it sorted. Thanks for your feedback.
@bontwoody thanks, do you have any tips for a real world data approach. It does feel a little risky basing my estimate on a single day, unfortunatel...
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