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dpmiller

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Everything posted by dpmiller

  1. dpmiller
    Where is the pump going??
  2. dpmiller
    and the meter is set to VAC, not DC correct?
  3. dpmiller
    I think they're seperate. Looking at the menu for the non-inverter controller it does seem to have two temperatures but the timer programming bit doesn't allude to DHW and CH schedules.
  4. dpmiller
    looks like it's using it's own programmer to do the flow temps based on times?
  5. dpmiller
    no reason you couldn't use a poured thin screed over the timber deck either. Our FF is 50mm hemihydrate over caberdek , on 254 pozis @ 400ctrs, with a span of 4.7m. It's impressively stiff and quiet.
  6. dpmiller
    Yes, the motors are known to fail and are replaceable. Hopefully your plumber also does electric. Not all do...
  7. dpmiller
    the valve works when it gets a supply of electrical power. You haven't yet confirmed that this is happening. Once you do this than you can confirm that either the valve (it's motor on top) has failed, or instead part of the control circuitry upstream (UFH wiring centre/ stats/ timeswitch/ ASHP controller even maybe)
  8. dpmiller
    only niggle is that those stats have a pretty wide hysteresis so a "too-low" setting may let it run for a bit and then just... stop.
  9. dpmiller
    tried hitting it a whack?
  10. dpmiller
    ... once you've verified that it's failed and there isn't a supply/ control issue...
  11. dpmiller
    Correct fitment is indeed terminal box down. I don't think I've ever heard of one failing ever but I do know that the housing is light-gauge copper and the chances of unscrewing the element out of an elderly one are small. Hence some now being sold as a soldered-up unit. interesting note also that in their normal application- from the bottom to the top of the DHW cylinder- running the heater for a minute or two to get hot water moving means that you can then open a tap to a low flow rate and have continuous hot water. The willis basically bypasses the tank...
  12. dpmiller
    yep, done this a number of times at our current place.
  13. dpmiller
    nominal bore of a black-iron pipe of that size IIRC?
  14. dpmiller
    found the blurb... NIbrochure_0119.pdf datasheet-v5.pdf
  15. dpmiller
    lucky you're not in the RoI then, where modern MLCP pipes are still used in true imperial sizes... They're a kinda copper-coloured creamy brown...
  16. dpmiller
    round these parts, upright mounting would be a given. But if on its side then side connection up yes.
  17. dpmiller
    https://www.ebay.co.uk/itm/Willis-Jacket-Complete-External-Immersion-Heater-Prewired-fully-assembled/202416631247?epid=1588852290&hash=item2f20f8adcf:g:wAgAAOSwfEJeHIev even had MIs...
  18. dpmiller
    tanks stats/ pipe stats/ motorised valves?
  19. dpmiller
    also worth noting that some (ours anyway) are a soldered-up sealed unit so not much chance of a leak. Oh and the fitting at the top is a standard one so the pipe won't slide on in...
  20. dpmiller
    Yep.
  21. dpmiller
    Our Turkington has a SS secondary HE and I don't believe there are any limits on the return temp.
  22. dpmiller
    Dunno, they show it modulating 1.5 to 10kW, how else would you do that other than inverter?
  23. dpmiller
    Now that *is* an interesting looking piece of kit. Intersting also that they're using the Heatstream TS tank... edit scrub that. RED *are* Harlequin?
  24. dpmiller
    but other than poorly-set defrost parameters, is the COP of the average ASHP ever going to approach 1 never mind dip below it?
  25. dpmiller
    if the shoe fits...
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