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Recent content by Rory

  1. R

    Testing emails

    Received from that email address.
  2. R

    15mm gas supply to new 30kW system boiler - OK?

    Thanks for that, appreciate it. I think I'm just going to live with it. It's become apparent that replacing the gas pipe would not be the drama I thought it would as I insisted that I wasn't happy with the top edge of the cylinder pressing into the gas pipe - the fitters solution was to drain...
  3. R

    15mm gas supply to new 30kW system boiler - OK?

    It was at the boiler. The trouble is, I know enough to feel uncomfortable about this, but not enough to argue with the CH guy, who clearly thinks I'm being completely ridiculous and there's absolutely no question in his mind that it's perfectly fine. Is 23mbar at the boiler normal? I...
  4. R

    15mm gas supply to new 30kW system boiler - OK?

    CH guy was here today fitting the hob. I said the boiler was niggling me and asked him to show me. He stuck his manometer on the boiler and showed me it reading 23mbar with the boiler apparently running "flat out".
  5. R

    15mm gas supply to new 30kW system boiler - OK?

    Sorry for delay in replying - had floor screed done and couldn't walk on it to get to boiler! Benchmark sheet has Gas rate as 3.42 cu meters/hr and Dynamic inlet pressure at 21mbar. As for witnessing the test I asked him and he said he'd give me a shout but then said he forgot! To be fair...
  6. R

    15mm gas supply to new 30kW system boiler - OK?

    Would that be shown on the Benchmark sheet?
  7. R

    15mm gas supply to new 30kW system boiler - OK?

    Just returning to this - boiler was commissoned today and Benchmark form done. He's got the max gas rate as 3.4 cu metres/hr, which is same as figure I'd found. He says it tests fine, but there's still the insistence that, despite the max output being the same, it's not the same as a combi as...
  8. R

    15mm gas supply to new 30kW system boiler - OK?

    Thanks - no problem, did understand what you meant. My point was that, especially bearing in mind how short yet awkward the run is, if you weren't 150% certain it was going to be OK then why not just run it in 22mm? I suppose that's the point, the fitter is 150% certain, and I know enough to...
  9. R

    15mm gas supply to new 30kW system boiler - OK?

    Thanks - it's "may be fine" part that bothers me. The boiler hasn't been commissioned yet. The way the pipe is routed I'd have erred on the side of being absolutely certain!
  10. R

    15mm gas supply to new 30kW system boiler - OK?

    Can't get at it for a useful picture, but this is the boiler end, with the top of the cylinder at the bottom of the picture: It's a swept bend in the corner, then down behind the cylinder, a couple of dog-legs then into the 22. Meter is the other side of the wall in the picture. Close as I...
  11. R

    15mm gas supply to new 30kW system boiler - OK?

    As part of our house refurb I had the boiler replaced and a pressurised hot water cylinder fitted. Builder's CH people used Glowworm Energy 7 30S system boiler, and mounted it very neatly above the cylinder. I was a bit surprised to see it piped in 15mm from the 22mm that comes through the...
  12. R

    Pumping over - on hot water only

    Sorry for confusion - I was using Megflo as shorthand for 'unvented hot water cylinder'.
  13. R

    Pumping over - on hot water only

    Only the upstairs rads close their TRVs - the downstairs ones, apart from the hall, are wide open. The biggest rad is a long single panel under the living room bay window, which is piped in a long and tortuous run of 10mm Hep2O, and that radiator gets very hot (the room needs it) even at its...
  14. R

    Pumping over - on hot water only

    Does SP = set point? There’s just a dial with blobs and it’s backed off a little from max. Have an old analogue pipe thermometer on the flow above the boiler and it gets to just under 70C, then drops to 55C in the 3 mins the anti-cycle time (pump keeps running). When the boiler re-fires the...
  15. R

    Pumping over - on hot water only

    Thanks again. If you look at the picture of the pump in the link earlier, it's got 4 segments with I, II and III between the segments. I've got it midway between II & III. On CH only, from a start (turn room stat up to open the valve) it flashes 3.8M and settles quickly to 18W.
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