2 new pumps/ now noisy

Discussion in 'Plumbers' Talk' started by starlight tiles, Nov 27, 2008.

  1. starlight tiles

    starlight tiles New Member

    had 2 new pumps fitted to conventional boiler.1 for water,1 for heating.
    both water and heating switches have to be on for heating to work.

    since the new pumps have been fitted the water pump is noisy.
    reason being when both switches are on it's noisy,but when i turn water switch off the noise stops

    whats the problem and how can i sort it
     
  2. Slap Dash Harry

    Slap Dash Harry New Member

    wanky plumber fitted DHW pump wrong way round no doubt
     
  3. Slap Dash Harry

    Slap Dash Harry New Member

    Also get said moron to set your programmer to gravity so that CH will bring on DHW automatically when called for alone. Plumbers make me laugh.
     
  4. Crowsfoot

    Crowsfoot Screwfix Select

    This is the old guaranteed warm system right?

    Look in the airing cupboard above the primary flow connection on the cylinder and you should see a air vent.

    Try venting it with the pumps switched off (this is the most likely cause).
     
  5. starlight tiles

    starlight tiles New Member

    is the air vent a little square nut on end of pipe
     
  6. Slap Dash Harry

    Slap Dash Harry New Member

    no, it's the little round nut on the end of the square pipe
     
  7. Crowsfoot

    Crowsfoot Screwfix Select

    Slap Dash Harry - Have you never been on a big job?

    You don't know much about plumbing do you!
     
  8. G Brown

    G Brown New Member

    That is a bleed valve so yes open gently until no more air comes out.
     
  9. Crowsfoot

    Crowsfoot Screwfix Select

    is the air vent a little square nut on end of pipe

    Yes.
     
  10. starlight tiles

    starlight tiles New Member

    opened that and just a little bit of water came out/should it have been air
     
  11. Slap Dash Harry

    Slap Dash Harry New Member

    Take a hack saw to the 2 pipes with F & R written on them in marker pen and let all the air out.
     
  12. Crowsfoot

    Crowsfoot Screwfix Select

    out/should it have been air


    It should have if that had been the fault - but if water came out then that's OK.

    Thats the obvious ruled out then!

    1. Check the bleed screw located on top of the pump itself for air, if water comes out it's OK..

    2. Try turning the speed on the pump to high to see if this does anything.
     

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