In article , on Sun, 11 Feb 2007
13:09:57 -0500, Mr. R wrote:

I have just taken a better look at the furnace, and there a Honeywell device
attached to it. The device is about the size of a pack of cards, and on the
front, it has the words "Cut In", and a screw here you can adjust a setting
which is in PSI, starting at 0.5, running to 9. What is this thing and
could it be the cause of my problem?

That sounds like a pressurestat. Do you have a steam boiler?

--
Seth Goodman