Search results

  1. S

    Just fitted a Grundfos Alpha 2 and have problems

    Yes I do get your answer, but I was wondering if anyone else had some constructive comments. Get it?
  2. S

    Just fitted a Grundfos Alpha 2 and have problems

    The weird thing is that things start off ok once the heating starts and it's not until towards the end when the boiler/pump switches off that I get a boiling whooshing sound from around the pump next to all the other pipes. Is it doing this becaue of a too slower flow rate? The only fix at...
  3. S

    Just fitted a Grundfos Alpha 2 and have problems

    I'll set the pump to the adaptive pressure flow as that works fine and only uses 30Watts instead of the old pump that used 60watts. Weird thing is if the pump is set to autoadapt and heating kicks in to move the temp by 1-2 degrees there are no problems at all. When the heating kicks in the...
  4. S

    Just fitted a Grundfos Alpha 2 and have problems

    Just installed an Alpha 2 pump and on autoadapt I experience kettling of the boiler (may need descaling) and more annoying after a few minutes a water rushing boiling sound from around the pump. The pump displays around 11watts when on autoadapt. I have an old Gloworm Fuelsave II boiler with...
Back
Top