Sketching

Thanks @TonyT - Didn't want to start undoing something to find that it was an endcap on the pipe!

Looking at lockshield valves online and then what is installed on the radiator... is this actually a valve?

The hall radiator doesn't have a thermostat on it (balancing radiator?), however, the hallway itself is normally quite cool - i'm always surprised that the Nest is reporting the temperatures that it does. It's not in sunlight so I don't see how it should be 'over reading', if anything I would expect it to be under reading... The hall covers both the ground and the 1st floor - 1st floor TRV is set down at 18 degrees so don't think that radiator would actually come on at all. The system was installed last February, just before lock down. I guess one way to tackle this would be to use a seperate thermometer to read/record the temperature and then start to compare? I was just concerned that I was running the system either too hot or too cold. Flow temp of 38 degrees, house thermostat of 19/20 degrees but getting something that feels right seems to be difficult.

Hi, I've got a Nest Thermostat installed, with a schedule of - 09:00 19 degrees 19:00 20 degrees 23:45 19 degrees This is repeated every day, so in theory it shouldn't be changing the state on/off much at all unless the house starts to cool down. My understanding of ASHP was that they were best left running 24/7?

Hi @ProDave Radiators - new install when ASHP was fitted so they were apparently 're-sized' for the ASHP. Minimum of duals, two are triples. House is a 2000 build (Wimpey). Hope this helps, Andrew

That was my next option - turn up the thermostat, however, I was also looking for some feedback as to what flow temperatures people are running their ASHP installations at?

Hi, I am trying to find the most economical value for the Central Heating flow for my 9kw LG Therma V system (Split). Current setting is 38 degrees - however the house does appear to be a little cool. I'm using a Nest Thermostat as the main control but not convinced that it is up to the job. It's located in the hallway, it can frequently be reading 20 degrees and switch the ASHP off yet the rooms can be reading between 16-18 degrees (I have Z-Wave TRVs installed in all rooms). What sort of temperatures do others run their systems at? Is it better to leave it running for longer at a lower value, or a potentially higher value for a shorter period of time? Any suggestions appreciated. Andrew

Just wondering if anyone can assist with this?

@ProDave - thanks for the fast response. DHW - 50 degrees C Heating Setpoint - 38 degrees C House Thermostat - Nest, Located in Hallway, set to 20-21 degrees C I've got a LG ThinQ unit connected which allows view of a number of the stats remotely - In my case I am using HomeSeer to grab the data. Andrew

We had a LG Therma V installed last year, just before lockdown. I'm still not convinced that the thing is setup correctly - water temp, flow temp, house temp etc, also if we should be using with an external thermostat (NEST), or just leaving to run? Can anyone give any advice on where to start - I'd like to be able to work through from start to finish to make sure that everything is correct and that we are not running a system that is not as efficient as it should be. Thanks in advance, Andrew

Hi - at the moment i've just been looking at the electricity usage as a comparison - it's more of a feeling that it doesn't feel right. The legonella cycle is disabled as the PV will heat the water to max temp when the sun is shining.

Hi, I live in Harrogate, North Yorkshire. My interest in these forums is the wealth of knowledge that I can see here specifically regarding Air Source Heat Pumps. I have an interest in some DIY - just lightweight really, however, my real focus is in green energy. We had PV Panels installed around 6 years ago now - 6Kw SolarEdge system located on three aspects of the house - E, S & W, combined with the SolarEdge Optimisers this gives us what appears to be a optimal install given the actual location of the house. In addition, we replaced our ageing gas boiler with a LG Therma V 9Kw R32 Split unit at the beginning of last year. At the moment I am looking at the last years running costs and wondering if the unit has been setup correctly. I'm not entirely convinced that any setup was done by the installer at the time. I look forward to reading more of this forum and chatting with other members! Andrew