My Trane XL14C is a dual stage gas furnace and single stage AC.
I'm getting ready to replace the thermostat and find that the furnace is configured as a single stage at the unit (connecting W1 and W2). From what I understand, this means that stage 1 runs 10 minutes, then stage 2 kicks in.
I'm going to have the company that installed the unit hook up the new thermostat but before I talk to them I'd like to know if there any advantage (or reason) to unjumper W1 and W2 to control each stage separately?
If it matters, the thermostat cable has 5 wires (of those 5, Blue is common) so I'm guessing it would require running another cable to control both stages individually.
Hope this makes sense.. I've taken a crash course on the XL14C and thermostats over the last week.