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About Me
Part time Living in Wickham Skeith
Experience: electrics, hydraulics, IT.
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LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
That is incredible fortunate indeed. One of the biggest issues is the lake of information the heat-pump provides. You'll definitively will have better control over the unit and whats more the new unit is more cost effectively ;-)) Enjoy! -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
Hi Reed, We had our remote controller updated last year. This was done by the same company that installed our heat-pump. We did it for the same reason you described. However, the functional result is null. That is because the heat-pump doesn't provide the triggers/ information for the remote. So no new information is displayed 😞 -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
Sorry for the late response. I got this from a modbus steering. COP is actually the ratio of the magnitude of the heat given off to the (hot) water and the amount of energy needed to do this (power consumption). The flow/ minute (actually per hour, hence the x 60) represents the amount of water that is heated. The 1.16 has something to do with the amount of energy needed to heat a liter of water. It represents a moment in time and the actual COP on that specific moment. It is not us full in calculating the seasonal COP, or COP over al longer period. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
I expect it to be a compromise. We like the house warm at the beginning of a (work)day. We work at home most of the time. And we tend to feel the "cold" more when sitting behind our desk. So shorter response time is welcome. This morning it was about 0 degrees when we woke up. Started with a target temperature of 40 degrees. Took a while but house (living room) is warm now. The COP today was reduced 3.9. Last weeks used to be somewhere between 4 and 5. Where COP = (flow per minute x delta T x 60 x 1,16) / power consumption in kW -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
This morning test with water temperature of 36 degrees and outdoor temperature 9, turns out to be too low. So I'll stick with 37. That's one point of the weather compensation line established. This weekend temperatures will go below zero over here. Next opportunity. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
You're right that mainly because of the interlinked settings it is not always clear what the effect of the different settings is. I'm slowly building a better understanding. Now if I change a setting, the effect is actually what I pursue, or had hoped to achieve. LG's manuals describe every setting, but not in a way that it's completely self explanatory. It's trail and error and learning by doing. I've reached out to a couple of suppliers. But found no one with in depth knowledge. Great that @ReedRichardssettings are working nicely with your heat pump and characteristics of your house. Hope you'll reach a moment in time that there comes an end to the tweaking. I hope that after this winter, I've achieved a stable situation. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
That's good advise. Already started a run this afternoon with a target temperature of 37. Still works fine. Than again outdoor temperature was slightly higher. Tomorrow another step. I understand the principle of Weather Compensation💪 -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
What I know is that the radiators are designed to heat the living room to 21 degrees. The water temperature in is 50 degrees and out is 45. This should be to at least -10 outdoor temperature. On top of that I know the wattage (is that English?) each radiator is able to supply at 50 degrees water temperature. At the current circumstances (outdoor 10 degrees) a water temperature of 38 is sufficient to reach indoor temperature of 21 degrees (easily). This is going to be our first winter with the heat pump installed. But we tested for two years with our previous central heating (gas) system, set to a max of 12 kW and a water temperature of 45 degrees. We never had problems heating the house and we had cold periods of at least -10 at night and during daytime also below zero. At the moment I'm experimenting with a fixed water temperature. When it gets colder, I'll increase the water temperature to a level that delivers the target room temperature. This way I expect to define the (what you call) the weather compensation line for our house. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
Thanks for your speedy reply! Our situation has some things in common. We have the same Heat pump (12 kW), use radiators only and use third party thermometer. British houses, especially the more traditional ones, have due to the thicker walls, better insulation. So on that part I will have to make corrections. And outside temperatures are probably a bit lower here in winter. It can get to -5 (and extremely to -10). But apart from these parameters, your settings will give me a head start. Thanks for sharing. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
We do keep notes when we change settings. It helps me enormously when changes don't work out as I expected. Makes it easier to go back to old settings. And whats more, I usually only change one setting a time. A bit of topic, but we do switch off some standby devices each night. Such as TV, Internet radio, soundbar, coffeemaker (we don't drink coffee at night ;-)). Turns out we save about 300 kWh per year. At current electricity rates over here (GBP 0.88/ kWh) we yearly save about GBP 265. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
@ReedRichards our AI settings differ a little. May I ask how the climate is in Berwick-upon-Tweed? How cold/ warm does it get in winter and autumn. Based upon that I can start changing your setting to work over here. I was using AI, but as you wrote "it is trying to run before you can walk". It didn't result in a comfortable temperature at every outside temperature. So we switched it of. At the moment I'm using a set water temperature. As you, we are using a third party thermostat. Mainly because the hysteresis the LG remote offers is too big. We keep getting overshoots and as @Ronnyexperienced, the living room cooled down to much after the overshoot. Do you have underfloor heating, or just radiators? What type of LG Heat-pump do you have? -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
Before buying a new remote, you could check with LG. You've possibly still got warranty?? You can reach them at ae.svcsupport@lge.com. Just a thought. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
That shouldn't be to difficult. It's connected only with 1 plug/ three wires at the backside of the remote. -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
Found some more, even cheaper: https://www.orionairsales.co.uk/lg-air-conditioning-premtb100-standard-iii-hard-wired-remote-controller-in-white-9843-p.asp https://aircon-online.co.uk/product/standard-iii-wired-remote-controller/ -
LG Therma V mono block Air Source Heat Pump
Transition replied to ProDave's topic in Other Heating Systems
By "remote" do you mean the LG PREMTB100? If so, I found this. Don't know if the price is competitive, but the sell the remote separately. https://www.lgcomfortcooling.com/products/premtb100-encxcom