jb1978, I have a water source heat pump (geothermal) with a 4 zone damper system similar to as you described. I am in the research stages of purchasing an outdoor wood furnace to add a heat exchanger in my duct. I have been studying my wiring diagrams and the zone system to determine best way to achieve what we need. As of right now, I do not have a clear answer. Sorry. but when I do, I will be glad to share it on this site for anyone.
Can you tell me the model of the zone control board (Carrier, I assume)? Honeywell makes the boards and if I fry mine again, I will change out to one of them. I've had lightening take mine out 4 times. I'm getting pretty good at soldiering components on the board and it working. This issue should not be a big deal.
Jim