
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...
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Latest Posts
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@eliuccio good to hear you’re happy with the install. A...
By Mars , 3 hours ago
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RE: No-code, plug-and-play monitoring for your heat pump
The issue with the Grant is that you have to wire direc...
By Grantmethestrength , 18 hours ago
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RE: Is this just haze or something more?
I am not a scientist nor a meteorologist and I know the...
By Toodles , 18 hours ago
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RE: Benefits of an extra horizontal loop for GSHP
It will improve performance, but by how much depends on...
By Brendon Uys , 23 hours ago
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RE: The good, the bad and the not that great – my heat pump installation
Said I would pop back with a update. Only Mr Jesus h...
By Burtis , 2 days ago
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RE: Buffers, hot water and cooling
Thats presumably heat pump DT, what about radiator DT a...
By JamesPa , 2 days ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Exactly the same here. We now have 13.5kWh ...
By Old_Scientist , 2 days ago
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Compressor and Evaporator Stratification
I have had a few issues with my Hitachi spilt heatpump ...
By trebor12345 , 2 days ago
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RE: Wood burner with ASHP - direct air?
This depends on the size of your wood burner and size/t...
By Lucia , 3 days ago
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RE: Difficult positioning of air source heat pump
@rikiarn It's a not a buffer it's a volumiser which is ...
By Lucia , 3 days ago
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RE: Is your heat pump insured?
To make things clear, lots of insurance companies cover...
By Lucia , 3 days ago
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RE: Boxt Heat Pump Installation Experience
@adrian any updates since installation? How is it perfo...
By Ashfp , 3 days ago
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RE: Say hello and introduce yourself
Hi @seatonian - Yes, I know Seaton, and I have the Nat...
By Transparent , 4 days ago
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@seatonian got your email. Will connect you with a reco...
By Mars , 5 days ago
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@downfield and @toddles, this isn’t in the settings cur...
By Mars , 7 days ago
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RE: Homely launched for Grant Aerona ASHP control
I haven't bought the Aerona Smart Controller (£700!) bu...
By Prunus , 7 days ago
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RE: Antifreeze top up for my heat pump - is this a rip off?
For the record, Grant supply ethylene glycol for their ...
By Prunus , 7 days ago
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer amazing. Well done!
By Mars , 1 week ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Ebac 5kw - Monobloc R32. Developed and made in UK - Mit...
By marcinwloch69@gmail.com , 1 week ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Just another thought - it might be worth thinking about...
By JamesPa , 1 week ago