Take the screw out of the brown front panel and pull the t/stat knob off.The brown panel will then slide off.Then take the two phillips screws out,one to the left one to the right.This will make the front panel fall forward showing the big case screw behind it.Take this big screw and the one on top out and the front cover will come off.Make sure you get it back on correctly and do not trap the pressure switch tube when you put the 2 front panel screws back in
Tony S, January 2009
