Gav_P

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About Gav_P

  • Rank
    Regular Member

Personal Information

  • About Me
    Avid fan of watching people work hard
  • Location
    Brizzle

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91 profile views
  1. Gav_P

    WBS and Flue position

    What have you got on the walls within the fireplace? Is it wet plastered, board and skim, fireboard? If its its any form of plaster it will definitely crack with the heat generated by the stove.
  2. Gav_P

    Hello from Bristol

    I’m in Westbury Park everyday... just across the downs from your neighbourhood.
  3. Gav_P

    Hello from Bristol

    I just found this thread... @MikeR how are you getting on with this idea... I’m only a couple of miles from you and very interested in the concept. @pocsterI have read through several of your horror story threads and only just realised that you are in brizzle too! What area is your underground bunker? Have you put your plans on here?
  4. Gav_P

    Many ways to set up an ASHP

    Stupid question... are you sure you have it wired up right? If if it turns on when you crank up the room stat, then this isn’t what you want is it? The room stat should just do the UFH pump and actuators. The TS should trigger the ASHP to switch on. There is the 3rd element to consider... is the command unit acting as a stat without your knowning?
  5. Gav_P

    Many ways to set up an ASHP

    Does the command unit report the temps it is getting from all the sensors in the unit?
  6. Gav_P

    Many ways to set up an ASHP

    Is the TS still calling for heat? Or has the demand stopped? if it’s still calling for heat, then it’s almost definitely a HP related issue.
  7. Gav_P

    Many ways to set up an ASHP

    Understood. And that applies in my situation 100%. But joes seems like it’s limiting itself to 25’.... probably something to do with the pissing about with the command unit 😜
  8. Gav_P

    Many ways to set up an ASHP

    All the programming aside, shouldn’t it be as simple as @joe90 asked? I.e. the thermal store is asking for heat (upto 40’) and will keep asking until it reaches temp. The ASHP should keep incrementally increasing the circulation temp until it reaches its max parameters (40’ or 45’ depending on what joe has set it to) or until the demand is met ? Am I simplifying too much?
  9. Gav_P

    Many ways to set up an ASHP

    I don’t have a buffer tank, so the demand is from the UFH, which is 22’ (room temp). i also don’t have the command unit, so the ASHP is running the standard heat curves. Interestingly it doesn’t ever seem to be working very hard... I assume the room stat is calling for only a degree or 2 of heat so doesn’t take much to bring the UFH back up to temp. I haven’t seen any signs of icing, even in single figure temps with fog etc.
  10. Gav_P

    Many ways to set up an ASHP

    Temp differences for me can be up to 10’ between flow and return, however it’s normally much less only a couple of degrees.
  11. Gav_P

    Many ways to set up an ASHP

    Yeah what he said! 🤪
  12. Gav_P

    Many ways to set up an ASHP

    @joe90 I don’t think I’ve seen mine get an output temp above 30’. Normally only about 25’
  13. Gav_P

    Scaffold is down

    Where can we see the plans?... photos look amazing BTW... you should be very pleased with yourself right now!
  14. Gav_P

    Expansion vessel for UVC

    @Nickfromwales & @ProDave ah I understand. In that case, yes it has the input group with the balanced cold feed to the rest of the house (except outside tap). It is is a new (middle of last year) install, done as part of my building works. But access was very different at the time as no plasterboarding has been some. The PRV on the cylinder was the one I mentioned above and that is accessable enough to test. The PRV on the input group is a bugger to get at, but is currently about 250mm from the UVC. Moving this to somewhere more useful would put it about 1500mm away from the cylinder, so a bit of a no go. I think I’ll just move the EV and add one of those lockable service valves recommended by Nick. Thanks Chaps
  15. Gav_P

    Expansion vessel for UVC

    The PRV is accessable. It’s just there is virtually no space to get at the vessel, never mind get anything on it to pressure check it. What’s ‘the input group’?