:confused: I just replaced an old Honeywell thermostat in a 41 year old home... the wiring (2-wire) was not labeled or color coded nor was the screw type terminal it was connected to identified (no P/N on the old T-stat either). Since I am purely looking for contact closure I installed a Model # RTH221 Honeywell Thermostat in its place, I installed the two wires on the Y & G terminals and now the circuit is closed and the heater kicks on but it doesn't turn off... Yikes!! So I had no choice but to pull the cover plate off to make it stop. Now Im really sweaty and confused... do I install these wires on the Y - G - Rh - Rc or W terminals, its just a simple natural gas heater with no fan / AC / or any other options... it worked fine before, but ohh was that ole T-stat ugly!! Any sugestions here folks?
Patej
