How should I wire a relay (or should I use a relay) to turn on the fan on my fan coil.
I have a two speed heat pump so I cannot use any of the fan coil controllers I have seen.
My thought is to wire the E heat off of the honeywell 8100 series stat I use on the HP system which would allow me to turn on the fan at heat CFM and energize the zone/pump. I have two air handlers so I need either one to be able to energize the pump. With this I would also still be able to use the same stat to control HP functions (although not at the same time).
I think I should use something to isolate things but I am not sure what.
Is this set up a good idea and if so any thoughts on how?