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Posted by jtown on January 19, 2004 at 19:05:10:
In Reply to: steam heat and no clue posted by kathy on January 19, 2004 at 14:57:22:
If it has a leak you should be able to see it on the floor. If the radiators have one pipe hooked to them, there should be an air vent at the opposite end, like a little chromed bottle screwed in. If you radiator valve is open, the air vent is probably bad or water logged, switch vents with one that works to test. Hissing is steam leaks that should be addressed after the winter, repack valves if gently tightening them doesn't work. Hissing air vents should be replaced. Banging is water being thrown around. Turn down pressure to minimum. If water is bouncing in the guage glass, it may need skimming. If you raise the water level alittle you can check for a leak at the waterline and you will get water on the floor. You should see the leak before you replace it, unless it is an ancient boiler.