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Last seen: Jan 14, 2025
oh dear oh dear. 22mm plastic is not a big enough pipe for a distribution trunk for a floor's worth of radiators in a system at ASHP flow rates. if it...
@crimson you could try increasing the pump power on the secondary side, that will increase head and flow rate thus increase your chances of getting a ...
hmm. I'm not liking what I see in picture pipes 2. You can there's a junction between a larger pipe and a smaller. That tells me that probably the...
@crimson pipes acting as radiators can be the issue accounting for temperature drop, but also flow rate. That plastic pipe in your picture, hard to ...
@crimson basically - exactly what toodles said! set all TRV's to max (or better, take them off) whilst doing lockshield balancing. The lockshield se...
@crimson have you tried (with all zones and all trv's open) pinching the lockshields down somewhat on the rooms that do heat up well, so as to force m...
@transparent @shaeney I'm impressed by the use of a Spirotech Spirotrap high flow rate low head resistance dirt filter. Its only the second one I've e...
@tobyg sounds good to me. much more likely your house is under 10kw heat loss than over and the lower modulation capability of the grant will help yo...
we're talking about the same thing. If you want to allow your room temps to vary by +-2c you'll need a 3rd party thermostat (thats a 4C swing). Not su...
@peterrsaltings not quite sure why you @'d me into here, I don't run legionella via my controller at all. I heat the whole tank to 55C every day with ...
@tobyg the 1C swing between on and off is native to the samsung controller when used as thermostat. if you want a different window to that, you need t...
you can of course adjust the flow temperature that it runs at post install. But, if you adjust it to lower than what your radiators have been sized fo...
Latest Posts
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RE: Renewables & Heat Pumps in the News
@editor, I hear that too. I can confirm that out of ...
By ASHP-BOBBA , 5 hours ago
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As many of you know, our Global Energy Systems heat pum...
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@derbygraham fully agree with James, and it’d be good t...
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Unfortunately its a function of the physics. Max heat ...
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RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
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RE: Electricity price predictions
@old_scientist We are a low mileage home, so bulk of ou...
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There are just too many unknowns for me to comment on p...
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RE: What is the main ‘dictator’ of Agile’s unit price?
@toodles I keep an eye on wholesale prices and energy m...
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RE: Brand and installer questions for ASHP
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RE: My Grant R290 9kW Heat Pump Installation
Again, really don't know how accurate this is! &nb...
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RE: Say hello and introduce yourself
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RE: Guidance with installing a new heating system
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