Jump to content

YorkieSelfBuild

Members
 View Profile  See their activity

  • Posts

    35

  • Joined

  • Last visited

 Content Type 

Everything posted by YorkieSelfBuild

  1. YorkieSelfBuild
    Anyway it looks like I'll stick with IMS as installers. Thanks for all the replies!
  2. YorkieSelfBuild
    It's actually 4kW, people got confused by a 9.5 kW number on one of the screenshots
  3. YorkieSelfBuild
    Update: after talks between architect and installer, the design is for high flow temp to rads so will need only small rads but in practice will run at same lower temp as UFH or unused. Still waiting to confirm if need only in bedrooms and if small enough to go under window seats so don't take up wall space. Estimated £900 extra, not terrible but still another 1k to budget
  4. YorkieSelfBuild
    Just noticed, the IMS pump is 4kW, not 9.5kW. • Heat Pump: Riello NXHM004 4kW 230V • Controller: Homely That 9.5kW might be the output at outdoor temp of -3.4C?
  5. YorkieSelfBuild
    It's for UFH on GF as well. It's still massive? Compared to 9.5kW, seems small Cool Energy said they can supply for grant for extra £1k (commission after installation, documentation, etc). The UFH is separate, so just installing pump and DHW.
  6. YorkieSelfBuild
    I got a quote from Cool Energy, £5800 inc VAT but not installation. • Heat Pump Output: We recommend a heat pump with an output of 5.90kW. • Design Temperature: -3°C ambient temperature with a 35°C water flow temperature, suitable for underfloor heating (UFH). • Heat Pump Model: We recommend the Cool Energy CE-IVT10-EVI, offering 4.89 kW to 10.47 kW at the above design temperature. • Hot Water Cylinder Size: 200L, calculated at 50L per person plus an additional 50L. • 200L Pre-Wired Hot Water Cylinder • CE-B60 60L Stainless Buffer Tank • 25L Inhibited Glycol • System Filter, CAT6 Cable, Flexi Feet, Pre-Insulated Hoses • WiFi Adapter How much would installation cost? No detailed plan, just ASHP and DWH supplied, is that normal?
  7. YorkieSelfBuild
    All 3, cleaner without, added cost, stops wall being used. But also are they needed or is proposed design flawed? Plus the flow temp is 40C+, higher than for UFH.
  8. YorkieSelfBuild
    The architect is suggesting to IMS to use rads designed for high flow temp but actually run it at same lower temp used by UFH, so there's no mixing. If rads were designed for low flow temp, would they be even bigger?
  9. YorkieSelfBuild
    The architect explained it (or just said what IMS told him) as Riello being a budget sub brand of Viessmann but it seems both are owned by Carrier after it bought them, which is very different. Also I've seen Riello NXHM 12kW at £3800 inc VAT, so £5.5k for installation?
  10. YorkieSelfBuild
    The price is £9.5k for ASHP and installation, minus BUS grant but adding more for the rads. The architect said it was a good price, maybe they getting rid of stock, too big and R32?
  11. YorkieSelfBuild
    How big is your house? Mines 118m². I've read in newspaper articles about people not getting the right size ASHP, usually too small but possibly mine is too big.
  12. YorkieSelfBuild
    Ah, gotcha. Like emailing CEOs. Thanks
  13. YorkieSelfBuild
    Thanks for all the replies so far. I've contacted several installers around Sheffield, let's see if what they come up with is drastically different.
  14. YorkieSelfBuild
    Here's the UFH power figures
  15. YorkieSelfBuild
    They already spec K2 rads in bedrooms
  16. YorkieSelfBuild
    The 9.5 is the outdoor design temperature DOT -3.4C (from their website https://www.imsheatpumps.co.uk/blog/understanding-your-heat-curve/) Will ask about R290 refrigerant, thanks
  17. YorkieSelfBuild
    Who's Adam? I'm still pretty new to the forum
  18. YorkieSelfBuild
    Installer says they're certified Heat Geeks
  19. YorkieSelfBuild
    I found the airtightness score, 1.3, so higher than 0.6 PassivHaus figure
  20. YorkieSelfBuild
    I don't think so, according to contract: Our proposal includes the design, supply, installation, commissioning and handover of the following to full Microgeneration Certification Scheme (MCS) standards: • Heat Pump: Riello NXHM004 4kW 230V • Controller: Homely • Hot Water Cylinder: 200 litres Pre- Plumbed • Buffer Cylinder: NA • Antifreeze Valves • Internet Expansion Card Installation includes appropriate expansion vessels and temperature / pressure relief valves to comply with Part G3 of the Building Regulations guidance. Please see inclusions / exclusions. Your Heat Pump system has been designed to meet 100% of space heating and domestic hot water demand at MCS design temperature
  21. YorkieSelfBuild
    I've already signed a contract but still within the 14 day cancellation period (lose £500 design fee). The architect/designer is talking to installer, the email chain says the installer used MCS software that doesn't model heat flow between floors or rooms. It's a new installer as they had trouble with previous installer on previous development plot. I'm in Sheffield, if anybody can recommend local installers?
  22. YorkieSelfBuild
    Not PassivHaus but quite close. MVHR, PV, SIPs, insulated, triple glazing, etc House still being built so assume no air test.
  23. YorkieSelfBuild
    Hi, I'm building a new low energy house, now at ASHP planning stage. Installer's given me the design docs and main issue is insisting on radiators to get the 7.5k grant. I was expecting to have no rads, not even towel heaters in bathrooms as I don't like hot towels. 600 x 800mm on 1F bedrooms 600 x 1600mm(!) on 2F bedroom Small one in bathroom (might insist in 2F ensuite too, late addition) One each on 2 landings Floor temps Wet UFH (GF only) up to 35C DHW 55C Rads 41-45C 1. I was told rads were needed but thought they'd be smaller, especially 2F bedroom. Do they have to be that big? 2. Are rads needed on landings? Only told about bedrooms. 3. Are the floor temps correct? I thought DHW could be lower, 50C or less. I think the UFH and rads sound about right. Shout if you need more info. Any advice is appreciated, thanks
  24. YorkieSelfBuild
    Will do, thanks. I've contacted a local (is 20ml local?) stockist about Kahrs Dry Back LVT, £30m² exc VAT. Need to find out how much installation would cost vs DIY
  25. YorkieSelfBuild
    Maybe it's just a bad idea to DIY any of it but I've been made redundant so was hoping I could save a bit in the flooring.
×
×
  • Create New...