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Need some help, please.

Discussion in 'Plumbing and Central Heating' started by perda6ko, 25 May 2019.

  1. perda6ko

    perda6ko

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    Hi there!

    Can anyone explain to me how this system works? Why 2 boilers: Potterton Promax SL(mounted in the kitchen) and Megaflow(installed in the corridor)?
    I'm very confused. Which one of these is heating the radiators for the central heating?
    Is this system worth it? The flat has 2 bathrooms. Please see the attached pictures.
     

    Attached Files:

  2. Hello,

    You do not have 2 boilers, one is a boiler (kitchen) and an unvented hot water cylinder in the corridor. Your boiler when selected on the programmer underneath heats either heating, hot water or both if selected together. If you prefer you can use the immersion heater attached to the cylinder, instead using electricity. X2 bathrooms with mains hot water is excellent IMO. System seems worth it to me.

    Hope this helps?
     
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  3. bernardgreen

    bernardgreen

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    The Potterton is a boiler. Burns gas to produce hot water.

    The Megoflow is a cylinder ( tank ) that stores hot water.

    The hot water from the boiler circulates around the radiators

    Inside the Megaflow is a coiled pipe that act like a radiator to heat the water in the cylinder.
     
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  4. perda6ko

    perda6ko

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    Thats where my confusion comes from: Why do I need a water tank to store hot water if I have a boiler to produce it?
    Or do you mean that the Potterton is not a combi boiler?
     
  5. Potterrton is not a combi boiler.
     
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  7. perda6ko

    perda6ko

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    Thanks!

    Which is better: to keep patterton+Megaflow or get rid of them and install a new combi boiler?
     
  8. In my opinion it would be better to keep the existing set-up as with the mega flow you will experience better flow rates and pressure than with a combi.
     
  9. fixitflav

    fixitflav

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    Why would you even think about replacing your existing system with a combi? What you have now is far better. If it's not working properly, get it fixed. Even if you had no system installed and were starting from scratch, Potterton+Megaflow would be better than combi.
     
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  10. Madrab

    Madrab

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    The quick answer is a combi will not supply 2 hot outlets at the same time. The unvented HW, if there is adequate cold mains flow and pressure, will happily supply mulitple HW outlets at the same time.

    It's a no brainer ..... keep the current system.
     
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