Posted by Harold Kestenholz - Hydronic Network on November 17, 2001 at 14:38:02:
In Reply to: Re: One more questions posted by Allan Weinman on November 17, 2001 at 13:02:10:
Yes, bleeding the radiators is one form of servicing the sealed system. As you will lose pressure by opening the system, you will need to open the pressure reducing valve line valve to refill the system as it loses pressure. Then the manufacturer requires you to close it again so you have a sealed system.