Heat Exchanger for OWB

[Bernie nw ON]

Hey all, I'm busy setting up a outdoor wood stove for heating two houses and hot water in my dairy barn. I have run into a snag - the main house (the one I live in) has a electric f/a furnace with a A-coil for A/C mounted directly above the elements - leaving no room for the water/air exchanger. No room above the A-coil either. Should I try to replace some of the elements with the exchanger - it looks like I could make it work. Or, should I mount the exchanger in the intake before the fan? Would this make the intake air too hot and cook the fan motor? Any other suggestions?

Thanks a bunch

 

[MS-310]

can you fit 5 inch on top of the a-coil? Never put the coil on the intake side of the fan... dont work well.