i am installing the model 700 now and also am haveing trouble with the wiring.i have a 24vac humidifier accessory lug on my furnace. i assume i need to connect that to the humidistat 24v terminals.
then i am wondering do i need the model 50 relay for the fan control? the wiring diagram is a joke. could you help me out, and tell me where i can get the book you got from aprilaire?