Posted by Mike O on January 16, 2000 at 15:56:48:
In Reply to: Re: Bleeding a forced hot water system posted by jtown on January 14, 2000 at 18:51:12:
: As I said you might have shut-off valves in the supply and return of each zone with drain cocks on the zone side of them. They take a hose from the city water pressure and blow hard enough to push the air through and out. If you don't have them, you might just have a system that should be drained down and bleeders soldered in since noone allowed for air when they installed it.