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Discuss Central Heating System Advice in the Central Heating Forum area at UKPlumbersForums.co.uk.

  1. ConfusedDIYer

    ConfusedDIYer New Member

    Hi, I am looking for some advice about the central heating system in a house I have recently purchased. I am not at all educated on hearing systems or plumbing so please be gentle...

    The house has a Combi-boiler in the kitchen, it has a hot water tank upstairs and a small water tank and a larger water tank in the loft.

    My understanding was that with a Combi boiler there was no need for a hot water tank. The system in the house seems to use the hot water tank. I only noticed as there is some water hammer from some piles and looked around the system in the loft and the hot water tank seems to be connected to the Combi system.

    Is this normal, can this cause problems? There hot water is low on pressure and there is water hammer so unsure if this is linked to the hot water tank.

    Thanks for any help!
    T
     
  2. scott_d

    scott_d Plumber GSR Top Contributor!!

    What boiler is it?
     
    • Agree Agree x 1
  3. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    Might not be a combi.
     
  4. ConfusedDIYer

    ConfusedDIYer New Member

    It Oscar a GlowWorm Ultimate 30BF, 40BF, 50BF and 60BF. Not sure which of those but that is what it says on the old leaflet with the boiler so it may not even be a Combi?
     
    • Funny Funny x 1
  5. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Not a combi

    Will be an open vented heat only boiler
     
  6. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    Which will be using the tanks in the loft.
     
  7. ConfusedDIYer

    ConfusedDIYer New Member

    Thanks for the quick reply.
    So I take it the boiler is only for the radiator is and the hot water tank is for hot water only? There is a digital screen below the boiler which shows hot water and central heating... very confused

    There is an electric switch within the airing cupboard which I have had off since I moved in but I have still had hot water, but at very low pressure? Anyone know what that switch is?

    In relation to the reason I was in the loft, water hammer, some pipes are not secured up their, it is simply enough to secure the pipes?
     
  8. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    The boiler does both. But it heats the water in the cylinder that is situated in your airing cupboard by 2 pipes connected to a coil inside the cylinder.

    The switch in the airing cupboard is for the immersion heater. It is basically a backup.

    Edited as not finished before I posted
     
    • Agree Agree x 1
  9. snowhead

    snowhead Well-Known Member

    Immersion heater to heat the hot water cylinder independant of the boiler.
     
    • Like Like x 1
  10. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Boiler heats the radiators also heats a coil inside the hot water cylinder

    You can control this via the programer below the boiler

    The switch will be for the immersion heater inside the cylinder (only for back up incase the boiler breaks)

    Yes just pipe clips maybe the ball valve that fills the tank is old and needs replacing
     
    • Agree Agree x 1
  11. ConfusedDIYer

    ConfusedDIYer New Member

    Thank you so much for the replies! You have all be extremely helpful to a complete amateur! Genuinely a big thank you.

    The pressure for the cold water is good but the pressure for the shower is not great. What is the best way to increase the pressure for the shower? I have Googled for hours but now I have an odd water/heating system I am unsure what is best?
     
  12. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Common system tbh

    And two options (well three)

    One rip the existing system out and install a combi boiler

    Two install a shower pump

    Three install an electric shower
     
  13. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    A combi boiler is a good idea. But can be an expense not needed when just moving in. Also a combi depends on a number of factors I.e size of house/number of bathrooms/showers and how many radiators.

    A stewart turner shower pump is a very good idea. Normally the most preferred method by customers. What space have you got in the airing cupboard? And how big is the big tank in the loft that feeds the cylinder in the airing cupboard?
     
  14. ConfusedDIYer

    ConfusedDIYer New Member

    The airing cupboard has a good bit of space. The loft has two water tanks, a smaller one and a much larger one though I’m not sure what litre.
     
  15. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    From what I remember, On most pumps the big tank needs to be a minimum of 50 litres. But I could be wrong
     
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