air in system
Posted by greg on February 18, 2004 at 14:45:00:
i have a hot water heating system that sprung a leak and now that i stopped the leak seems to be full of air. Do I bleed the system with the furnace running or turn it off? I tried to bleed it with it running but the pipes clank like they are gonna blow! So I tried with the furnace off but then nothing seems to happen.

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