I recently expanded the living space of my house by converting a garage to living space.
As part of that I extended a heating loop (hydroponic baseboard) in one of the two heating zones in the house. I also had to cut into the other zone to remove a tee coupling with a 6 or 8 inch piece of capped pipe that extended straight down and into middle of the new room old garage (it was part of a line that supplied the bedrooms above the room and ran perpendicular to the bedrooms floor joist).
Now everything is hook up, I bleed the system (the best I know how) and I am getting heat out of all radiators, the outgoing pipes and most importantly, the return pipes all seem hot. The problem is that the system appears to be noisier than it was. I know some groans and creeks are par for the course but this seems like I still have air in the lines (in both zones) (at first you could hear the water rushing through the pipe). I bleed the system by going to each bleed valve opening it until the air spits out and I get a steady stream of water (take a total of about 30 seconds); I started at the top and worked my way down. I have this 2 or 3 times. I get some air at the very top, none at the lower levels, but still the noise.
Am I bleeding the system correctly? Should I bleed them longer each time or more often? Did I make an error when I removed that tee with the pipe (I though that was just offshoot to put heat in the garage or for eventual expansion).
Any other suggestion?
I looked on line I found very little in the way of specific instructions on bleeding a hot water systems.
By the way I waited until mid day when there was no call for heat and the circulation pumps were not running to bleed the system.
Edited 1/28/2007 11:18 am ET by bobo66
Edited 1/29/2007 9:41 am ET by bobo66