Last seen: Oct 26, 2025
I've looked through all 4 documents they send me for 'boiler', 'heating', 'air', 'pump', and can't find any specific reference, apart from saying that...
@allyfish Not to de-rail this topic (so I'll probably post results - if any - on a new topic) but I've just started trialling a scheduled 2°C drop of ...
@tobyg Just to buck the trend, I'd go for the Grant. Now, I have a Grant 10kW and it's proved quite tricky to set-up and get what's needed out of it, ...
@rupes Thanks for the info. I've seen a defrost temp of -3 and -4 trigger the cycle. It's definitely the 100W consumption figure which shows we're in ...
@rupes This is very interesting. I'm trying to wire up my LLH heater atm, but it's a tricky cabling path for both power, and the control switch from t...
Just to clarify @allyfish comments to avoid confusion (I hope) - they were talking about the need for an automatic setback function at nighttime which...
@rupes Here's my pattern for yesterday. Although I was in constant defrost cycles, I was hitting target quite often, but the house temp was a good 1C ...
@allyfish I think this slow handover between DHW and CH (and even this isn't the Grant way as per installation) is because LWT on the DHW cycle (say 6...
HW would be better run during the afternoon (say 3-4pm) rather than overnight, as it's when the LWT is highest so you want the warmest external air yo...
@allyfish Thanks for the info. For whatever reason, I didn't get the standard Grant HW cylinder with my install (it's a ukcylinders slim one) and they...
- that is the immersion heater element, so that's the right thing to do. There should now be nothing which is trying to add heat to the HW cylinder. ...
You've possibly had a pressure issue, which could be the hissing sound, or maybe there's been a slow leak on the secondary return valve that's now got...
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