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Trouble bleeding radiators

I can't seem to find the screw which will allow me to bleed my hot water slant fin radiators--I've pulled off the casings and can only find the pipes. Does anyone know exactly where to look?

Comments

  • Clint Moon
    Clint Moon Member Posts: 1
    Problems with bleeding radiators

    Hello:

    I have a forced hotwater radiator system in my house.

    I noticed today the radiator in my daughters room wasn't fully heating up, that is to say it only heats up the lower half of the unit. After checking all of the radiators around the house I found 3 of 5 radiators upstairs exhibiting the same behavior. I proceeded to try and bleed them and found they won't exhale air. Even with the vent fully open it won't emit water. Is it possible these 3 radiators are somehow internally clogged preventing water flow up through the upper half the unit?

    I would appreciate any information or clues you can provide to me on this.

    Thanks in advance!

    Clint Moon
  • F Reynolds
    F Reynolds Member Posts: 92


    Just a thought. With everyone trying to save money on heating, is it possible a previous owner or someone turned off the valves that feed those lines? I found valves all over my basement and noted some were turned off. However, if you have been there for a while, and the heat has worked before, that is probably not the reason.
  • tim smith_2
    tim smith_2 Member Posts: 184
    no water or air

    > Hello: I have a forced hotwater radiator

    > system in my house. I noticed today the

    > radiator in my daughters room wasn't fully

    > heating up, that is to say it only heats up the

    > lower half of the unit. After checking all of

    > the radiators around the house I found 3 of 5

    > radiators upstairs exhibiting the same behavior.

    > I proceeded to try and bleed them and found they

    > won't exhale air. Even with the vent fully open

    > it won't emit water. Is it possible these 3

    > radiators are somehow internally clogged

    > preventing water flow up through the upper half

    > the unit? I would appreciate any information

    > or clues you can provide to me on this.

    > Thanks in advance! Clint Moon



  • tim smith_2
    tim smith_2 Member Posts: 184
    no water or air

    > Hello: I have a forced hotwater radiator

    > system in my house. I noticed today the

    > radiator in my daughters room wasn't fully

    > heating up, that is to say it only heats up the

    > lower half of the unit. After checking all of

    > the radiators around the house I found 3 of 5

    > radiators upstairs exhibiting the same behavior.

    > I proceeded to try and bleed them and found they

    > won't exhale air. Even with the vent fully open

    > it won't emit water. Is it possible these 3

    > radiators are somehow internally clogged

    > preventing water flow up through the upper half

    > the unit? I would appreciate any information

    > or clues you can provide to me on this.

    > Thanks in advance! Clint Moon



    not enough pressure to get up to top of radiators, have someone adjust auto fill valve so there is adequate pressure to reach the top of system.
  • tim smith_2
    tim smith_2 Member Posts: 184
    no water or air

    not enough pressure to get up to top of radiators, have someone adjust auto fill valve so there is adequate pressure to reach the top of system.
  • Uni R
    Uni R Member Posts: 663
    Bleeding

    Is it a single pipe system (except Monoflo)? If it is, the radiator is likely bled as a whole zone elsewhere. Try to follow the piping of that zone until you see a valve for bleeding the air.
  • Emily Terry
    Emily Terry Member Posts: 2


    There are two pipes under the cover.
  • Uni R
    Uni R Member Posts: 663
    Piping

    You need to see where it goes AFTER it goes through the floor or wall to determine that. If there are no water shutoffs or air bleeding valves on your baseboard radiators then there should be a spot elsewhere on the circuit where they can be bled.
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