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Heat Balance???

Jason_40 Member Posts: 1
I'm a plumber by trade and a friend recently asked me to help him replace a valve on a radiator. I did-oops-The road to hell is paved with good intentions. We pulled out two valves with "paddles" on them. One was at the top right of the radiator with a big black handle (I thought it would have been a typical walrich type shut off valve). The other at the lower left was a "tee" with a screw type fitting looking at you. I presumed it was a needle-type shut off. Again-both were (I presume balancing valves) with "paddles" in them. It appeared the gaskets in the uppper right valve were goofed up. I installed a typical radiator shut off in the upper right and a typical radiator el in the lower left(as per origional config.). There is a bleeder in the upper left of the radiator. And this is hot water-not steam. The origional problem was that there was no heat coming from this radiator. And yes-it was bled. After the change-out, and subsequent bleeding of the system (2 floors in the house, 15 psi on the system and circs. off) there is still no heat from this radiator and it seems to have created changes in the way heat is coming from other radiators. ??? Have I created a change that has disrupted the balance of the system? Have I done something completely wrong? Does the system need to be completely rebalanced? I'm in limbo and not sure where to start. It seems improbable, but I think I can still hear air down by the gas boiler, circulating. I don't see an air vent anywhere, but downstairs seems unaffected by our actions. One thermostat downstairs. Any takers on problems? Solutions? Your expertise is appreciated... Clueless and cold (although less and less as we approach summer! :-) ). Thanks for any help.

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