I would like to replace this thermostat with a Hunter 44110. There are only 2 wires. One is connected to the terminal label 5 and the other is connected to the terminal labeled 4. I am not sure what I should label these wires to connect them to the Hunter thermostat.

Here is a link to a website that has a picture of the thermostat.

http://www.emersonclimate.com/Documents/White-Rodgers/instruction_sheets/0037-1759.pdf

Hi. This is Aaron Moratalla from White Rodgers. Terminal 5 is for the hot side of system transformer while 4 is for Heat relay. It also goes like R=5 and W=4.