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    adamt's Avatar
    adamt Posts: 4, Reputation: 1
    New Member
    		  
    #1

    Jul 23, 2007, 06:05 AM
    Hot water and heating
    My water has been off for 2 months and now probably got an air lock I have bled radiators but that hasn't worked .tried to bleed the tank but the key doesn't fit ,I thought all keys were a universal fit is this true?
    scirocco70's Avatar
    scirocco70 Posts: 128, Reputation: 9
    Junior Member
    		  
    #2

    Jul 23, 2007, 06:18 AM
    Quote Originally Posted by adamt
    my water has been off for 2 months and now probably got an air lock i have bled radiators but that hasnt worked .tried to bleed the tank but the key dosent fit ,i thought all keys were a universal fit is this true?
    This is a hydronic (water-filled) heating system?

    This is the plumbing forum, where mostly it's about potable water supply and drainage...

    I'll take a stab anyhow... When you bled the radiators, did you get water out of all of them?

    If so, and you still have no circulation, my guess is that the "air lock" you refer to is at your circulation pump.. which is probably attached to or very close to your boiler and it's tank. There can be many different kinds of air-bleed systems on boiler tanks, even automatic ones. Get all of the air out of the tank (unless it's designed as an expansion tank? If so, follow manufacturer instructions) and be sure the pump is flooded with water (ie, the parts that should have water are full of water).

    Good luck, and you may get a better answer on the HVAC forum!

    ~aaron



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