Reply To: slant fin baseboard heat- air in line

[Harold KestenholzParticipant]

You have an air trap in the line. If you have a purge and balancing valve at the end of the zone, purge the air through the zone as at: http://64.226.150.132/hydronic/service/purgeair.htm

If not, put a baseboard tee and air vent as at: http://64.226.150.132/hydronic/des/start.htm#Install
at the last end of the baseboard before it droips back down, then purge the air from there.