Will: You could always call Cookshack at 1-800-423-0698 and ask. The people at Cookshack are really good. I don't know about the SMO20, but the SMO25 and O66 have a preprogramed start up cycle. The smoker runs on high for 40 minutes or so to get the smoke rolling, and warm up the smoker. I get a good smoke using chunks and running my O66 at 200 degrees after the start up.