We have newly become a Trane residencial dealer in our area. We installed about 10 split heat pumps, all XL 14i with gas or electric furnaces and visionpro thermostats.
I would like to clarifie the best sequence of operation.
The Trane rep said I should set the balance point in the stat and leave it at that. Heat pump only above the balance point and gas bellow the bp.
I feel that event if the heatpump can't heat the house by itself, it would still pay to run it and suplement with gas heat as needed (to allow operation bellow what we now use as the balance point).
Trane's literature shows a cop above 2.0 at 10 deg F!!!
Does this make sense?
What controls would I need to acheive this?
Also, can a plenum stat used for defrost be installed upstream from the A coil?
Thanks for the replies