My old Aprilaire 760 died last week so I bought a new Aprilaire 700 manual and installed it but I'm having difficulty with the wiring. The way I hooked it up (see diagram below) includes a relay in the system to sense when the heat is activated and the solenoid is powered by the 24v R terminal. It works and gets heat to temp it needs and humidity to where it needs to be but the fan now runs 24/7. Not sure why this is given that I didnt wire anything to the fan terminal. If it matters, I have a nest E thermostat. How can I properly wire this to turn on when heat is running only and do I need the relay? I'd rather not have the fan permanently stuck on. Can I instead power the solenoid through the W terminal only (diagram attached)? Thanks in advance!
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