boiler heat with circulation problems

Old 01-20-03, 02:13 PM
truth seeker
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boiler heat with circulation problems

I have a boiler system(hot water) with cast iron rads. My boiler is located in the basement and supplies water to rads on the 1st & 2nd Flr. On second flr. I only have one rad. All of the rads on the 1st flr get hot and have good water circulation. My problem is that the rad on the 2nd flr. stop receiving hot water(any water). I bled all the rads on the 1st flr. and when I attempted to bleed the 2nd. flr I received minimal air pressure and no water. I went as far as removing the rad from the supply and return lines to see if water would flow and still recieved no water. What could my problem possibly be.

Thanks in advance for any help given
Old 01-20-03, 02:30 PM
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What is the system water pressure? Sounds like it is low, under 12 to 15psi.
Old 01-20-03, 04:12 PM
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Put that radiator back in the circuit before adding water to the system. You probably only need a few more pounds of pressure.
Old 01-20-03, 05:22 PM
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You mite also want to check to see if there is any type of zone valve in line. this is a electrical valve to shut off zone.

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