Scott, I can't give you specific details, but some thermostats have various settings for different types of heating systems. Apparently, they try to take into account the lag in the heating system response time. If your thermostat is set for a different system than what you have, it might be causing the system to short cycle. Possibly you can find out if your thermostat has the facility to change the heating system type, or max / min threshold temperatures.
-- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081
