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Far2wired

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  1. I have started setting up an emonTX to monitor ASHP usage (LG R32 7kWh). Seemed to be ok to start with but we also have a Solar iBoost which its usage is included (as I understand it the unit triggers the LG controller to use the immersion). Is there an alternative I should clamp to just get the ASHP usage minus iBoost? We have a mini consumer unit in the loft space as pictured below. Left to right - Heating - Connected to underfloor heating manifold. This reading tells me the pump is running for UFH. Immersion - I get a reading here when ASHP triggers its weekly cycle, but not when IBoost kicks in. Heat Pump - Get sensible ASHP usage figures but also includes when iBoost triggers the immersion, so inflates the usage. Main Switch / 20A Modular Contactor - No CT clamp I've confirmed the power to the iBoost control unit is from the Immersion MCB.
  2. I previously worked for an energy supplier on the initial rollout of smart meters (IT, yes its all my fault! ?). At the time having solar PV found out about the issues with SMETS1 and refused installs based on this. The SMETS1 meter had communication issues and the protocols used differed between suppliers plus unreliable export readings. This is why when changing supplier it wasn't as advertised as an easy swap! There should not be any suppliers installing SMETS1. If you are unlucky enough to have SMETS1 already you can request your supplier to upgrade to SMETS2 for free but the deadline for that is 31 Dec 2021. I'd imagine post that date there would be a cost to pay. Checking their website Octopus state the app is currently available for Apple devices. Android coming soon!
  3. We recently switched to Octopus Go, it is designed for people with electric cars but we have set our battery inverter to charge up at its E7 equivalent rate. Once I have access to our HP LG controller (password locked by installer) will be looking at setting that too to make use of the cheaper electric. Unit rate (04:30 - 00:30) 16.26p kWh Unit rate (00:30 - 04:30) 5p kWh
  4. Apologies for not replying sooner, this install has turned into a nightmare... Absolutely, I don't understand why the installers think they have to dump the excess. I'm getting increasingly frustrated with the installers as it will be 6 weeks this Tuesday since the HP was fitted and they have still not arranged for the ST engineer to attach it up. At this time as the ST coil is at the bottom of the tank (as you can see above) we only have 60ltrs of usable hot water. We were pressured into paying the invoice to fit the HP being told the RHI scheme payments could go down if we delay. We have left messages every day on the installers phone for when this is going to be finished and it seems to roll on and on with no firm completion, when we do get through we are promised a phone back which never happens. Really worried now this will never get done. Does anyone have any advice how we can resolve this as it seems the company has no interest in completing this job? Re the ST setup, (I have a basic understanding but in no way capable of modifying the setup myself!). The roof module are tubes, the controller is a Resol DeltaSol BS, before it was turned off was heating a vented tank.
  5. Now that does makes sense. The solar thermal has not been connected yet or our iBoost controller. Once the solar thermal is plumbed in that would be the primary source of heat with the HP topping it up. In the winter our solar thermal on average would heat water to 30C. I'm assuming the max temp the tank would get to is set to 65C so we would be mixing more cold water. I guess we will have to see once these last bits are fitted and see but during winter will be the test...
  6. Yes, first temps HP was idle. That was just to show what temp the tank was at before showering. Just to confirm our DHW is set to 50C not 55C. Tank size is 210L. But with the shower at 36C I would expect some cold mixing with the tank starting at 47C. We have a Kingspan HPS210ERP. Thermometer is in dry stat pocket (G2), there is a lower stat pocket (G1) but I think that will be needed when solar thermal is plumbed in. Every cloud - at least its not been wired into G3 eh! I have found a monitoring solution based on the Adruino platform (https://openenergymonitor.org/) but as I understand it would need a thermal energy meter (something like a Sharky 775 - which isn't cheap!). Has anyone got a similar setup where they are monitoring water temps? I'm thinking whoever is the lucky person that connects up our thermal to this system will need to fit something similar to stop the temps getting too high.
  7. We have solar pv and thermal. Still waiting for installers to fit iBoost controller and plumb in the solar thermal. Problem seems to be the solar thermal is unvented, the existing tank will be discarded and the panel outputs attached to the second coil in the tank. However there is no control of maximum temperature. I have been told the ASHP has a max return temp, anything higher than 65C will cause damage, I cannot find anything in LGs specifications to confirm that. So the installers are planning on a heat dump for any excess. Even if I could heat the tank to 65C still makes me think why they installed a 210L cylinder as on its own the system is not fit for purpose. I've seen the quoted recommended figures and our shower is efficient at 6 litres per minute (some are over 10 lpm).
  8. My mistake... Seems DHW is set to 50C and that is locked maximum. Did another test with the DHW tank starting at 50C. Ran the shower and ASHP did not start until tank was down to 40C temperature. As you say that is too late as the water is being replaced with cold. After stopping the shower after 5 mins tank dropped to 30C pump now definitely on! Is it possible the pump is operating on a 10C delta of DHW target and tank actual and is that configurable? I'd check the installer menu however I'm sadly locked out until I gain that level of trust the installer is looking for. For some reason they think customers will "fiddle" with the settings ?
  9. After many years running a combi gas boiler we took the plunge and replaced with an LG R32 7kWh air source heat pump. The system has now been in for 3 weeks (today in fact). We reported an issue to the installer over a week ago that it seems we are running out of hot water quickly. Understanding this is no longer instant hot water and we are not going to be mixing with cold as much I did some measurements... Hoping someone can shed some light if this is an issue or we are expecting too much from the system as we have only ever owned gas combi boilers in the past. Before someone showered I read off the controller the temperatures shown DHW = 47 Water IN = 22 Water OUT = 22 (The DHW is set to 55C) Shower is a digital Mira platinum set to 35C. We use the ECO setting and measured the flow with a jug and a stopwatch over 1 min = 6 ltrs of water outputted. Shower was ran for 20 mins, by which time the water was noticeably cooler, to the point it was not comfortable to shower. Controller temperatures DHW = 33 Water IN = 36 Water OUT = 43 The installers fitted a 210ltr unvented tank. This was sized based on our property - 3 bed. So this one shower used a total of 120 ltrs of water (some of that mixed with cold). For those that monitor the water temps do you see a drop like this or is our system not kicking in soon enough to maintain the heat in the tank?
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