Recent content by Johnytuono

  1. J

    Boiler modulation and balancing

    Yeah, maybe I'm looking into it too much. Does it sound 'right' though that I've deliberately left one bedroom more open than the final (end of line) rads in order for it to heat up first? As an aside, so, even if people balanced to a set Delta, it doesn't necessarily mean that the order of...
  2. J

    Boiler modulation and balancing

    So, you're saying that you overheat the living room so that it then cools to whatever temp you find acceptable?
  3. J

    Boiler modulation and balancing

    All heating up but at different times.i.e. the one next to the boiler then the water loops upstairs and then feeds the hallway and living room/lounge. I've shut the l/s about 1/4 (apart from one bedroom which I want heating up earlier) and they all now heat up more or less the same time. Deltas...
  4. J

    Boiler modulation and balancing

    I was reading an article about balancing and it said to balance to get Delta 20 whilst the boiler is at full output or maybe it will only show Delta 20c at full output, otherwise, if it modulates down to the minimum (6.9kw from 28kw i.e. 4:1 in my case), then only that delta will be shown at...
  5. J

    Boiler drop flow/return only 5C

    Balanced all rads, tried @ Delta of 10,15, 20 and only 5C showing at the boiler even when all l/s fully opened up it still shows 5C at the boiler. Anyway, was reading some old posts and saw this quote : "If the system is running with a fixed pump speed and and automatic by-pass valve, the...
  6. J

    Roomstat and TRV

    No, they seem to be within .5 c of each other on max, Best leave both on max then? Both same RH too @56% 18.5 C
  7. J

    Roomstat and TRV

    My 'problem' is that the 2 downstairs rooms are 'joined' via an archway opened all the time (about the width of 2 average doors, so not quite open plan). One room has the room stat and TRV set on max but am unsure wether to set the other TRV to max or not.
  8. J

    Roomstat and TRV

    @Harry Bloomfield Would it also be wide open when demand is going from 18c to 19c or partially open i.e restricting the flow slightly?
  9. J

    Roomstat and TRV

    If I could though (maybe by using a separate thermometer to check), would it be beneficial to slow the flow down, especially when nearing room stat temp?
  10. J

    Roomstat and TRV

    Ok I know the principle of either there being no TRV (or if there is set it on max) in the same room as the room stat BUT, say I had the room stat at 19C, would it be beneficial to put the TRV on a setting just above 19c (about number 3 on a Drayton) in order for the water to be fairly flowing...
  11. J

    Pump speed on combi boiler

    WB 30kw Si compact boiler (about 12 years old) that supplies heating and hot water. The pump is a 15/60 3 Speed Bosch. If I set the pump to Speed 2 (or 1 even) for the CH, does it always use Speed 3 for heating the DHW? Can't seem to find the answer anywhere. Thanks
  12. J

    Roofers all suggest to slide Eaves Trays above the membrane and batten, what can really go wrong?

    Old thread but what did you do in the end please. I have a similar (although older) slate roof and part of the membrane has perished and when we have a westerly driving wind/rain we get a leak. Any other ideas welcome please
  13. J

    Cladding over render?

    There's a few fine cracks in my render but I was thinking of cladding over it anyway for a couple of reasons 1. the cladding is pretty solid but not a level clean look and 2. to improve insulation, rather than take 'space' off internally plus move sockets out etc. Good or bad idea? What would I...
  14. J

    Last radiators on the heating 'loop', L/S fully open or not?

    Oops, sorry yes, 5 C below the actual flow temperature. Both posts now edited for clarification.
  15. J

    Last radiators on the heating 'loop', L/S fully open or not?

    Thanks for the reply. All the other rads are balanced so every rad is roughly the same temp. at about the same time. What 'niggles' me though is, that no matter what flow temp. I set, be it 40, 50, 60 etc. then the return at the boiler eventually stabilises to about 5C below the flow temp.. This...
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