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dpmiller

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Everything posted by dpmiller

  1. dpmiller
    Like an egg.
  2. dpmiller
    google "dewpoint"
  3. dpmiller
    The water's p*ssing off my window frames at the moment, but then a tonne of water being driven out of curing screed will do that. I know that it'll get worse before it gets better so I'm keeping the heating on. But that's just me...
  4. dpmiller
    if the climate is as damp as you say, 1.5l of water won't make a lot of difference to your woodstore.
  5. dpmiller
    the unit has an rj12 cable to go to the controller, plus two sensors- one for the hot tank and one for the buffer/ heating. You can run it like this using it's controller for time and DHW/flow temperature control, it needs nothing more. but... There are dry contact inputs for heat/ DHW/ cooling, and available outputs for aux pump, motor valves, immersion backup. I just pulled in a mains-rated multicore and a screened Cat5 to cover all eventualities; for now that's a pair of the cat5 to extend the sensor up to the tank, and in future two switch wires for heat demand and cooling. One thing I've noticed is that it's quite flow-sensitive. While the flowswitch will let the unit run quite happily at modest flow rates (flowsetter is stuck in Hermes somewhere, boo) the system will throttle the output to keep the flow delta under 10c. Raise the flow, and the power increases too...
  6. dpmiller
    the landing/balcony and the two bathrooms upstairs both have UFH. I've ran pipes for rads in the bedrooms but don't think I'll need any, I reckon the heat rising then banking in the screed will keep them about right. Screed is dead-on the 50mm upstairs but the GF is a bit thicker as the subfloor had a bit of variance and I had been erring on the side of caution cf. level access at the front door. 60-75mm...
  7. dpmiller
    a few days in and the screed is pushing out a shedload of water again, MVHR has gone into humidity override. Consumption is about 40kWh/day, slab at 22c/ GF 19c/ unheated FF bedrooms 17c. I'm currently running in series/buffer mode, so heatpump flow is going through the TS before heading to the UFH mixer, I've got the heating/buffer sensor strapped to the return pipe after the UFH and bypass, and the ASHP is controlling on that. Flow and TS are both 37c at a setpoint of 30c
  8. dpmiller
    Is the radiator clamped tightly in it's mounting brackets? If it is, try loosening a couple a touch.
  9. dpmiller
    what wiring centre do you have?
  10. dpmiller
    Thanks Clive. So I read the meter. About 4pm yesterday til 8pm today; ASHP, MVHR, and a dehumidifier, minus very little solar production equals 53kWh. And that has the slab up to 19c and the ground floor in general around 17c. That's a shedload more efficient than the willis!
  11. dpmiller
    Don't care about the make tbh as it's in a single housing in the meter box. Good spot tho, either A or maybe F? I'll have a mooch around see what I can find.
  12. dpmiller
    plenty of room actually Dave, the angle is deceiving (and I'm left-handed lol). It's 10+" off the wall.
  13. dpmiller
    you can probably find a setting to change that cycle time?
  14. dpmiller
    Just received the SAP and airtightness certification through. House comes out as A96, and the airtightness is as previous at 1.783m3/h/m2 which is 1.37ACH. Well chuffed with that!
  15. dpmiller
    IIRC the GSE trays are not much over £30 each, the hold-downs and tekscrews a couple of quid each, and the flashing is worked out per perimeter. And a panel is about 1.5m2... The only other thing you need is some 4x1 to screw down onto in the right zones.
  16. dpmiller
    @Declan52 It's a 270l tank, there's piccies upthread a bit. It was quoted as a very high recovery coil and that seems to be the case alright I'll get a photo of the unit installed later, but it's still a bit lashed-in for now, insulation to finish and the unit levelled etc.
  17. dpmiller
    It's an ESR, Clive anRCD2-80100T. Evidently built down to a price...
  18. dpmiller
    fitting is easy, especially if you don't need to extend the 5m pre-wired sensors and controller. I did run into one slight problem, the inverter has shown the RCD out at the meter box to be dodgy. it's a 100mA type-S but was tripping out when the compressor was started. I rechecked it with the multifunction tester and while the circuit's RCBO is tripping correctly at 30mA and holding in fine, the type-S is going at under 80mA so something aint right with it. I've linked it out for now... Software seems simple enough, there are a couple of fan and pump modes I want clarification about, and I didn't have any hassle getting into the hidden installer menu. Performance? So far... 4c ambient yesterday, thermal store raised from under 30c to 55c in about an hour and a half, which confirms it's 7kW+ in these conditions. I've left it on overnight at a setpoint of 26c for the slab, and my chinesium wifi stat is telling me that the hall is now at 14c and rising, from the 9c it started off at yesterday
  19. dpmiller
    ASHP in and running. It's a pretty impressive bit of kit!
  20. dpmiller
    yep, it's used for removing bonded car windscreens too.
  21. dpmiller
    the TF guys did the walls and round the openings, I did all the ceilings and slopes... OK so I'm doing something a wee bit odd for the CH/DHW. I'm using a 270l manual-fill thermalstore, direct to the boiler stove and indirect to the ASHP etc. Makes the boiler stove a useful member of society and means I can heat the whole house during a power failure just by running a couple of CH pumps. And yes, outages aren't that unusual round here apparently. Also means I can use the bottom quarter of the tank as a buffer.
  22. dpmiller
    So... Air test result is in. [drumroll] 1.78 that'll do... and there was a delivery
  23. dpmiller
    using that logic, why heat the water at all, it's wasting energy to so do...
  24. dpmiller
    Blower door test done this morning. Waiting for calculated results, but the fact that the fan needed four of the eight plugs refitted to the range plate apparently means we're pretty good.
  25. dpmiller
    not a wee pun, just a wee Ulsterism. @Dreadnaught I anticipate running it's drain into the basin drain through a clamp-on appliance tapping https://www.bes.co.uk/single-self-cutting-washing-machine-waste-6957/
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