Purging System

billw · Post by **billw** » Tue. Oct. 21, 2008 6:24 pm

My EFM has been running for a couple of weeks. This weekend I should have my last cast iron radiator repaired. I put valves in the zone plumbing so I can isolate that loop without dropping the system pressure. Do I need to shut the boiler off long enough to let the water cool to fill the radiator and purge the zone?

Bob · Post by **Bob** » Tue. Oct. 21, 2008 7:23 pm

No.

In fact gasses can only be fully purged from the system by heating the water in the system.