The blue W2 wire is your heating coils, so if you wanted to run it as both emergency or stage 2, you would wirenut 2 short jumper wires to it, and attach one of them to W1 and one to *. If you only wanted it to be emergency heat, you could attach it to * only, but then your house might get colder than you like until the emergency heat temp is hit and the heat switches over to emergency mode. Either way, you’d have to reset the wyze and remove it from the app and then re-add it, telling it that you have a wire attached to *. then when you are setting it up, it will ask you what is on * and you will tell it emergency heat. After you have told it this, you should be able to run the heat in emergency mode only without the compressor running, on demand from within the app.