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  1. gpbeck

    Backer / Cement board for low level UFH

    I lusted after underfloor heating for years. If I'd done it just 5 years ago my system would have been incompatible with 2023 current standards and very disruptive to install. I then discovered large 2-2 radiators can be sited unobtrusively and perform brilliantly!
  2. gpbeck

    Soldering poorly fitting joint - pipe not round, good fill, how?

    Would fitting a compression fitting not round it off? Remove, pull off olive, then solder.
  3. gpbeck

    Flow temperature discrepancy

    A 10 degree drop across the boiler and across the rads was the normal design until 10 years ago. If flow temp 64 return 54 you probably have only a little condensation in the boiler but to increase efficiency you will need bigger rads. This allows a drop in flow temperature and a bigger drop...
  4. gpbeck

    Unsure if I have an underground water pipe leak?

    Disposable dehumidifiers are nowhere near powerful enough - you would need a mains powered one.
  5. gpbeck

    Can I do anything to boost flow rate into my Roca cistern?

    This is a servo valve that needs high pressure to operate properly. It should be pretty simple to swap this valve for a low pressure valve from a local merchant (asking their advice). And change the pipe at the same time.
  6. gpbeck

    Testing solvent weld connections

    I sometimes put temporary down pipes on all the inlets, fill the system with water and leave overnight.
  7. gpbeck

    Potentially moving to house with solar panels - advice?

    Feed in Tariff is no longer available. The Smart export guarantee payment is no longer for an estimated amount but it is metered on an export meter. And typically only 5.5p a unit, once upon a time the wholesale rate.
  8. gpbeck

    Insulation installation around kitchen prior to underfloor heating

    If I'm reading you right you'll end up with a cold damp floor under the units. Best to remove them.
  9. gpbeck

    Drilling Flint.

    Basically to get a straight cut drill has to be fixed rigidly to the wall first using specialised frame to stop it wandering off.
  10. gpbeck

    Hot water temperature from Domestic immersion cylinder

    Can’t see that any direct cylinder with a single immersion would ever reach 60 deg throughout without a destratification pump. Must be hundreds of thousands of these out there. So risks must be very low.
  11. gpbeck

    Hot water temperature from Domestic immersion cylinder

    To be fair the “committee” has produced HSC document L8 which recommends daily sterilisation to 60 WITH a destratification pump to make sure it’s all stirred up. This is very rare in a domestic setting and would use loads of energy. I suspect most tanks in the UK vary from room temperature at...
  12. gpbeck

    Hot water temperature from Domestic immersion cylinder

  13. gpbeck

    Hot water temperature from Domestic immersion cylinder

    Heating up to 60 once a week is sufficient to prevent legionella. Without a photo your description is a bit confusing, cylinder thermostat should be attached to the cylinder.
  14. gpbeck

    why would a plumber remove 1.3 m of pipe

    I wish I could say I’d seen worse!
  15. gpbeck

    82mm underground pipe - 2 x 40mm wastes

    Are you sure this pipe goes to a foul sewer and not a soak away or surface water drain?
  16. gpbeck

    Replacing kitchen tap, help needed

    Grip the narrow brass nut that is part of the hose and hold it still. Then turn the fat nut, ANTICLOCKWISE if looking upwards. This will unscrew the nut from the hose.
  17. gpbeck

    Megaflo only heating with immersion?

    Well he’s making 2 visits. Gas cost is perhaps a quarter of electricity on standard tariffs but the complexities have other costs! Nobody bothers with insurance cover for immersion heaters.
  18. gpbeck

    Wolverhampton Hot Air System Upgrade

    Hi I have purchased a 60s bungalow with gas hot air heating installed underfloor. Hot water is supplied by an auxillary gas direct heater of dubious efficency all courtesy of Johnson and Starley. BUT. We like the look of it and it is effective. Reading up on this I wonder if the best option is a...
  19. gpbeck

    Using Indirect Cylinder To Heat Radiators

    6 radiators will give off 6KW of heat, maybe more. Your immersion element might be 3KW, so not enough energy provided at the source.
  20. gpbeck

    Dodgy Bypass Preventing Condensing

    There is very little about this out there when I searched. So I posted this. I wondered how many boilers out there fail to condense for this reason, and how many are checked for this. A man of great esteem and intellect such as Robert perhaps feels this stuff beneath them, their advice being to...

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