Okay i have tried everthing to get air out of two zones in a hotel. Each room comes off of a monoflo loop with a zone valve on the supply side. i bleed the air out of return side hosecock and room is fine for the day the following day its back. I have looked for leaks in system and all looks good. so not sure what else to do very frustrating.
Any out remote along the piping run? Like at a high point? Maintenance guys add them all the time thinking that'll solve problems. An auto vent say at a baseboard or in the attic will actually suck air in.
This post was edited by an admin on February 1, 2014 12:42 PM.