Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Aug 22, 2026
I have to stress that I don't actually know what it does as I don't have one, only that it does something. It looks like you have found some detail f...
Basically what this is saying is that, if the water pump contained within the heat pump isn't strong enough for the job (because your heating system h...
@marzipan71 In the diagram they look and are piped like a buffer tank (an LLH is, in effect, just a small buffer tank afaik). So far as I can tell ...
@iancalderbank Re-reading the thread on buildhub I refer to above I think I am now both confused and a little embarrassed. I thought that the con...
I will be quite frank and admit that your questions had me re-evaluating my assumptions. I will have to look back a long way on the buildhub forum (...
Sorry on my reading it does. I quote ... "So when you are in a low load condition you get this issue:... The flow slows down and the unit trips out...
It's both very refreshing and somewhat depressing to read this. Assuming I understand it correctly there is an admission that LLHs were added principa...
Thats my understanding and how it has been described to me by someone who has a buffer tank set up properly, and has demonstrated so with fully convin...
Temp sensor (or two) in buffer monitor where the thermocline is, heat pump adjusts the flow from the heat pump accordingly, thus keeping the separatio...
You can try arguing with the installer. In my experience this will work with some, but many will take no notice. Basically its a sellers market so m...
Exactly that. There is clearly an argument, in some, perhaps many retrofit situations with radiators, for running at say 55C ((which I guess is on th...
Er is that true, or is it only the case that any heat pumps when run at high temperature results in lower efficiency (which is of course the case)? T...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
Nought for nought is the very best you can do, as soon ...
By JamesPa , 6 hours ago
-
RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 7 hours ago
-
Britain’s Heat Pump Shitshow is now available to pre-or...
By Mars , 2 days ago
-
RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 3 days ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 3 days ago
-
RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 4 days ago
-
RE: Mitsubishi Ecodan FTC6 settings
The Mitsi remote thermostat should not be plugged into ...
By F1p , 4 days ago
-
RE: PV and battery long payback - sense check query
@jamespa I was just commenting on the speed, not sug...
By Batpred , 5 days ago
-
Readers here please note that Derril Water and many oth...
By Transparent , 5 days ago
-
RE: Advice on Vaillant Sensocomfort
Oops, I meant Sensocomfort (the UI to the controls)
By Batpred , 5 days ago
-
RE: Heat Pump Training vs. Real-World Installation
Our instal was very much the opposite. White haired blo...
By Batpred , 5 days ago
-
RE: Flushing system, cleaning and inhibitor
While skim reading a manual for our Vaillant HW tank, I...
By Batpred , 5 days ago
SPONSORS
