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    Lenght Of Vent Pipe to Prevent air intake on pump start up ?

    My hot water vent pipe rises 200mm above the HW in pipe going into the 3 port valve. Is this long enough? I have recently installed a new Grundfos 15-60 pump (for 8 rads) however I think it is sucking in air on start up due to pump inertia and I suspect it is coming down the manual bleed...
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    Automtic Bleed Valve

    I am a plumbing novice! Can anyone advise me about an automatic bleed valve? I have a manual bleed valve on top of the vent pipe next to my hot water tank and above my Grundfos 15-60 pump that I recenlty installed. I am having to bleed the pump and bleed valve daily due to a build up of...
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    Changed My Water Pump but it always needs bleeding?

    I installed a new grundfos grundfos 15-60 water pump a week ago. Trouble is my heating does not work until I bleed it? I have bled it two or three times a day for the alst week. It works great after I bleed it but next day air seems to back in system. My boiler is down stairs and pump...
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    Central Heating Not Working

    Can someone please help? My Central heating is not working. I have just replaced the pump but its still not working. There is heat at the pump but all rads are cold? _____________________________ Lynda, moderator Please continue with your original post, which is here
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    Central Heating

    Can anyone help? Have bled rads but they are not heating up. Pump is turning?
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