I have a ranch style basement, mostly unfinished 28x50 ft. I have a Buderus furnace and I have ran 56 ft of baseboard around the basement. The copper pipe is insulated for the remaining 150 ft. I have been running the zone for 3 days now and can't get the heat past 65 degrees. The outside temperature has been around 30 degrees. Any suggestions on what I can do to get the basement room temperature higher?

Thanks, Jim