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Last seen: Jan 28, 2026
Just to be clear this won’t be a Grant LLH/combo volumiser. This will be a 4 port 80L max buffer/LLH. Due to space limitations. They've made no mentio...
So an update… Installers insist a replacement 80 litre buffer tank/LLH is required. They’ve sent me a schematic, from Grant Install pack ...
I hope out of all of this that I can run the system at a much lower flow temp. Checked back through endless mails on calcs and it looks lik...
I’m looking at the diagram in the manual and nowhere is there a LLH, item 6 is a volumiser, on the return. No idea why they’re insisting on the LLH....
It’s a 13kw Aerona3 (has 2 fans). Model: HPID13R32
So Grant got back to me, and as suspected there’s no requirement for a LLH, but there is for a volumiser. They even said “volume is King”. I suspect t...
Thanks both. I’ll push gor thr glycol, 5% is 5% i cant lose. I think further back in the thread I have pictures of the pump room and pictur...
I probably got that wrong, looks like the valve is for when a power outage happens?
Thanks again JamesPa. My memory is baffling at the moment but broadly I think the plumbers stated approx: Front UFH zon...
Thanks JamesPa, Sorry for my lack of understanding on terms/2 port v 4 port etc. Just unsure then why the installer insists on this LLH if the man...
Not sure then, I’ve been reading the manual and it does state it needs a volumiser, and even suggests options for low volume systems (why they didn’t ...
A quick google states the Grant Aerona3 requires a low loss header as a mechanical break as part of Grant’s install package - I suspect they’re using ...
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