Bleeding air from Hot Water Baseboard System
We have a 3 zone system that has gotten very noisy this season from air getting (?) in the system. First we're not sure where the air is coming from. Second, we can't seem to get the air out when we bleed from the baseboard units. We've had trouble with one zone for a few seasons now and the second one just started this season. The third zone is quiet...at least for now :)
After reading several posts here, I realize there is a way to bleed the system with a hose.
We tried to do this based on a compilation of different posts, but we must be doing something wrong...still gurgling! I had the hose connected to the spigot which is located above a shut-off valve, which is located above the thermostat (one set-up like this for each zone), the hose I ran upstairs, above the highest baseboard, and into a large bucket (which we emptied several times, rotating buckets). I made sure the zone was on and water was moving through the zone. We did one zone for 45 minutes!
Can someone detail this process for us? Also, how long does it usually take to completely bleed a zone?...I mean, how do you know when you've completely purged each zone? The water gushing sounds are so frustrating...and I read that it's not good for the boiler, so we definitely want to remedy the problem.
Thanks for posting!!!