I did this on Aprilaire 8870 in a house with radiant baseboard and forced air conditioning. As I recall it was as simple as a couple of settings in the menu and leaving off the jumper between R and RH
Jack Rainey - Full disclosure...reformed integrator, now mid-Atlantic manufacturers rep for: Integra, Paradigm, Anthem, Parasound, Atlona, LG TV's and Metra Home Theater...among others