How to wire a trane 900 series thermostat to a five wire XL13i heat pump system.
wmproop
Feb 15, 2010, 05:17 PM
Follow the directions in the installation manual, note be sure to tag the wire as to what they were hooked to before removing from the old tstat,, also don`t forget kill the power at breaker ( for furnace) in electric box before you start