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oranjeboom

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oranjeboom last won the day on July 22 2016

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  1. So this is what the installer has come up with in tandem with Vaillant (see PDF). Still awaiting for Sunamp to review and approve that. Sunamp also came back with this suggested fix for the external Sunamp control unit (which I have questioned whether this is their 'final' solution as the wording seems a bit haphazard!): Vailant and sunamp schematic (1).pdf
  2. I've just tiled the fireplace inset with 'special' tile adhesive that cost a leg and an arm. And a sore back. Whilst some folk on the interweb state to use special heat-proof grouting also, there are others (e.g. https://stovefitterswarehouse.co.uk/pages/tiling ) that state there is no need and to just use the standard grouting. It'll be approx 3mm grouting. 10kW log burner. Any real experience on here with people using std grout or should I just go and use Vitcas grout or similar? TIA!
  3. Yes, I have an earlier model, the "eDual", external controller which is the issue as it does not rely on a heat sensor. 65 degrees I believe
  4. I've spent a while trying to find this online, as I'm hoping to send this to my installer to see what he thinks. Is this online also? I tried looking under Vaillant also....but no.... Thank you!
  5. Yeah, but for the BUS grant I need the ASHP to be doing the charging/heating of the Sunamp unit... Although I will need to apply to Ofgem first to see whether they will approve this setup for the grant. According to my installer... Anyone on here been accepted for the grant with Sunamp in the mix?? Okaaaay.... Can you give me any examples? I'm fairly clueless here. I'm having to make suggestions to installer and keep getting drip-fed by Sunamp to make this whole thing work. It really should be a simpler affair!
  6. Going to buy a lottery ticket tonight....I actually had someone from Sunamp call me this afternoon about my external control unit. Essentially I just need to find a HT HP that has a switching circuit (rather than a heat sensor)...the old eDual units were compatible with LG HT Therma models. I've had a brief look at the latest LG units...not seeing anything obvious that shows whether the latest offerings work via heat sensor or switching circuit. Does anyone on here know more? Or what I should be looking for in there schematics?
  7. Not chosen a heatpump...installer is keen on EcoDan, but no sufficient temp outflow for the Sunamp unit. Being limited to what Sunamp's list of compatible list of HPs (for the eDual): Daikin Altherma 3HHT R32 Series Ecoforest ecoAIR PRO series Ecoforest ecoGEO PRO R290 Series Phnix Greentherm R290 Series Samsung EHS HTQ R32 Series Trianco Activair R290 Vaillant Arotherm Plus However, the external controller for the eDual won't is not compatible with the above due to it's switching circuit.... So either it's me finding an electrician who knows how to adjust things in the controller or convince Sunamp of shipping me a new external controller with the compatible wizardry. Installer is ignoring my calls as he's fed up with dealing with Sunamp and has easier jobs to be getting on with and Sunamp hate dealing with the general public.
  8. So from I gathered from my dealings with Sunamp and installer is that the controller on eDuals would need to be replaced as these have " a switching circuit which won’t be compatible with most heat pump controls as they utilise a resistance reading to generate a demand or satisfied call" Has anyone had an external controller replaced and what was the cost? I know they are now fitted internally on the Thermino models so can't imagine it's a very complex issue to provide me with an updated external controller? Obviously I have enquired with customer service, but service is a hit and miss affair and often one is quicker to go via the BH way!
  9. I also started with a 1950's bungalow and was adamant that I could insulate with some of the available spreader boards on the market where some manufacturers sail very close to the wind with regards to having 'sufficient insulation levels' on their product. I was almost tempted, but after doing research, I just had to face reality to either stump up the money for decent insulation and work or to pay stupid bills on heating. I went with ripping up the concrete base and dug up 400mm and filled it with insulation (PIR/EPS) with a new UFH embedded into the concrete. Had some issues on the way But glad I went that way. If you only have timber, what void do you have underneath? You may not have to dig up to much to get better than BuildStd insulation levels in there.
  10. Probably a bit much for me at this stage. KISS for now! Yeah may have to go down that route and get my electrician to fit one. Accuracy is key.
  11. Hi all, Looking to have a temporary 'smart meter' to have in addition to the old analogue one. User has no wish to have have a 'smart meter' installed by current provider and dubious about the merits of having one. But would like to have something that is easier to read in terms of consumption used at hourly/daily intervals. I see that there was some discussion here about them a few years back, but many of these units don't appear to be available any longer such as Effergy and Owl. Just needs to be accurate (there's a question mark on current analogue dial meter but no wish for energy company to replace it with smart meter...unless it shows to be inaccurate) and simple to install, so ideally clip on to the house feed. There's obviously plenty to choose from via ebay/amazon, but accuracy and simplicity is key. I have however read that there's a question mark on the accuracy of the clip-on ones but wondering whether there's any exception to this?
  12. So the UniQ systems all have 4 ports that would allow 2 flows and 2 returns. See fig 4.6a below in the UniQ manual v2.3. Not seen the latest Thermino manual so can't comment on how things have developed. s 5.4.1: Presume the highlighted section refers to eHeat batteries and eDual (the ones I have). The HW+i also has the 4 ports s5.5.1: The HW+i model ("heated by an external heat source (e.g. Gas boiler, Heat pump)...are fitted with a standby electric heater") has the capability of electrical heating too and yet this is contradictory again in this diagram where it states the electrical heater element only refers to the 'e' models: I imagine the inside construction of that whole range is pretty much the same (with some having the electrical heater built in some not) and that the Sunamp Qontroller is where the systems really differ, but I am sure @Nickfromwales would know more. Clearly I'm no expert on these units and that's why I relied at the time on Sunamp to confirm/advise things before the things were shipped! If they then confirm that the HW+i and the eDual systems are the same, you have to settle for that as they are the product experts. I can see why they have moved away from dealing with customers direct as I'm another one who's severely disappointed with this outcome now!
  13. I really don't have the room for a cylinder unfortunately! Unless I place that in one the unfinished rooms upstairs and have a 20m pipe run from the DHW manifold. Could be done...but a PIA... Would they even install a cylinder (presume size-wise it would be based on bedrooms in house rather than actual occupants (1.5)?) plus an ASHP circa £7.5k grant? Annoyingly I have just checked my Sunamp units and they are eDuals (both 12) and I have checked the manual that does state "These heat batteries should not be charged by an external heat source". That contradicts what I have in writing from Sunamp a few years ago prior to shipment! Annoyingly someone at Sunamp confirmed that the Uniq HWi and eDual units "are the same product" when I questioned them on this. So now I am left with 2 units that cannot be charged via ASHP which had been the intention at some point. Not happy!
  14. Ahhh yes, I recall they had some initial tests with Vaillant and Samsung back in 2018 with R290. I imagine the COP isn't great at 75C though. I'll have to check what PCM I have in my Sunamp units, thought they required temps of around 50C (IIRC). A 8kW Vaillant aroTHERM is £3,680 (inc VAT) but then a more complex setup and probably be well over the BUS grant. Other thought would be to use a lower temp ASHP to preheat the water supply of the Sunamp at least to say 40C, if that's possible. But strictly speaking that would not meet "full hot water demand" aspect of the BUS requirement, unless I find an installer who is willing to do that.
  15. Bugger! Currently I have two Sunamp units, only one which is being used for DHW (other one not in use as currently low family demand for DHW). IIRC, they are eDual units and not sure now whether they could be connected to ASHP. I did consider this a few years ago, but at the time there were limited ASHP units that could deliver higher temp demands to use with the PCM in the Sunamp units).
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