I am going to replace the existing one (picture-1). As you can see the 2nd picture, 4 wires come out from the wall; White, Pink, Orage(?) and Black. The RC and RH are jumped together on the thermos.
The Pink one is connected to the RH.
The White one is connected to the W.
<img src="http://www.doityourself.com/forum/attachments/air-conditioning-cooling-systems/67229d1465787780-replacing-very-old-white-rogers-thermostat-white-roger-thermostat-panel-copy.jpg" border="0" alt="Name: White Roger Thermostat Panel – Copy.jpg
Size: 21.9 KB” />
<img src="http://www.doityourself.com/forum/attachments/air-conditioning-cooling-systems/67230d1465787816-replacing-very-old-white-rogers-thermostat-white-roger-thermostat-wiring-copy.jpg" border="0" alt="Name: White Roger Thermostat Wiring – Copy.jpg
Size: 40.8 KB” />
I’m going to buy this one:
Here is the manual: http://www.emersonclimate.com/Docume…/0037-7260.pdf
I have a question about the BLACK and the ORANGE ones; how do I connect the 2 wires in the new one?
Appreciated for any helps!!!