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    g-spot69's Avatar
    g-spot69 Posts: 2, Reputation: 1
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    #1

    Nov 9, 2009, 04:56 PM
    Air in hot water heating system
    I have a gas fired hot water boiler. I have noticed there is gurgling or air in the system. Where in the system would I go to purge the air out?
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Nov 9, 2009, 05:06 PM
    There is no one-size-fits-all answer to that. Most commonly, the individual radiant terminals have a key vent that is opened to allow air to escape. Are your terminals free-standing, wall-recessed, or baseboard convector type?
    g-spot69's Avatar
    g-spot69 Posts: 2, Reputation: 1
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    #3

    Nov 10, 2009, 04:20 PM

    They are baseboard type
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #4

    Nov 10, 2009, 04:25 PM

    Have you checked the water pressure at the boiler, maybe you have all air and no water. How many zones do you have? If it was setup right you can flush each zone seperatly for the boiler.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #5

    Nov 10, 2009, 05:49 PM
    I have seen 2 methods for venting air from these: 1) key vents inside the enclosure, 2) purge valves in series with shut-off valves. You should have one or the other.
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