Changing from a Honeywell T6069A1065 to a Honeywell RTH8500
im having a bit of trouble with this and hope that someone can help me out.
The wires coming out of the wall to the old stat are as follows,
There was a little diagram on the back of the old stat,as follows
The Red,Brown and Blue were hooked up the the fan motor
The Y and O were hooked up the the valves
and the Black was under L1.
The new stat has almost nothing that lines up with these, any help would be great.
Thanks in advance