Heating in 1-zone house only work on upstairs floors, not downstairs

We just bought a Brooklyn 2-family- house with a newish Williamson gas boiler and baseboard heaters in all the rooms. When I set the thermostat (located on the upper floor of the upstairs apartment), heat starts streaming through the upstairs heaters, but the downstairs baseboards of that same apartment stay cold — not a hint of warmth. The house has a rental on the ground floor, for which there is a second Williamson boiler and a separate thermostat, located in that garden apt. That system works well. Anybody has any idea what’s going on? Thank you.

michaelsaur67

in About Brooklyn 9 years and 11 months ago

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13 replies

steam_man | 9 years and 11 months ago

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ummm… Gross.

daveinbedstuy | 9 years and 11 months ago

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I got something here for you to drain, steam_man. 🙂

steam_man | 9 years and 11 months ago

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Well done DiBS. You drained his boiler.

michaelsaur67 | 9 years and 11 months ago

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Bleeding the system solved the problem — lots of air. Warm now. Thank you very much for your thoughts and time.

michaelsaur67 | 9 years and 11 months ago

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Hi, Thanks Daveinbedstuy and steam_man, yes, the red valves are drains. I keep them closed.

daveinbedstuy | 9 years and 11 months ago

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Sorry. From another pic, those are obviously drains. Don’t open the red valves. LOL

daveinbedstuy | 9 years and 11 months ago

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He said he has baseboards, not radiators. Yes, make sure both of the red valves are open. Obviously the other two lever ball valves are open (No reason for both of those valves in a row). Check further down the line to the first floor like I said above.

steam_man | 9 years and 11 months ago

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I meant the valves before and after the radiators. Are they open? Also, those red handle valve look suspicious because they exist in the same line as the ball valves below them. I can’t tell you what should happen with them because I can’t see the piping they are serving and what it does. The one on the left looks like a bypass but I’m not sure. So if you know what the piping scheme is there, check the red valves, at least one, possibly both should be open. DON’T mess with them if you don’t know what they serve!

daveinbedstuy | 9 years and 11 months ago

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I can only think that there is another valve along the feed to the downstairs baseboards or there is a thermostat valve in that line that is closed/not connected

michaelsaur67 | 9 years and 11 months ago

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Hi eman134, These are the pictures of the boiler setup. I hope that helps. Thanks!

eman134 | 9 years and 11 months ago

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Put up a photo of the boiler setup so that I can see it’s layout

michaelsaur67 | 9 years and 11 months ago

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The yellow valves at the boiler? Both are open.

steam_man | 9 years and 11 months ago

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    string(15) "bbp_participant"
  }
  ["allcaps"]=>
  array(4) {
    ["read"]=>
    bool(true)
    ["level_0"]=>
    bool(true)
    ["subscriber"]=>
    bool(true)
    ["bbp_participant"]=>
    bool(true)
  }
  ["filter"]=>
  NULL
  ["site_id":"WP_User":private]=>
  int(1)
}

Are the valves open?