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Old 11-22-2011, 07:02 AM   #1
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Different Elbows on baseboard


I noticed that my upstairs has these different elbows on the FHW baseboard heating. I have never seen these, but all the baseboards upstairs have these. What are they for??
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Old 11-22-2011, 07:43 AM   #2
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Different Elbows on baseboard


Air vents built into elbow. Loosen screw at top and air will come out, if there is air trapped in that part of the system. Don't loosen too much, or you may get wet.

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Old 11-22-2011, 07:53 AM   #3
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Different Elbows on baseboard


Ahh! A lot of banging noise when the heat runs, but whoever installed this didn't allow much expansion room. The holes for the pipe are just big enough for the pipe, so maybe it's air making that noise, or maybe it's the lack of expansion room. I will try letting some air out!
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Old 11-22-2011, 08:13 AM   #4
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Different Elbows on baseboard


Lol don't let them unthread completely from the holes unless you have lots of towels handy.
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Old 11-23-2011, 11:56 AM   #5
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Different Elbows on baseboard


Air in a hot water system usually migrate to the upper levels.If you are going to have air in the system it will be located in the upper level radiation.
If you have or you install a Spirithern air scoop in the basement,you will no longer need to bleed.
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