I just found and purchased a P&M Optimizer 250 that has been sitting in a shed for 15 years, never burned. Lots of threads related to this unit in this forum, better and worse. Kind of a unique opportunity here to ask folks who have been through a complete life cycle of one of these what mistakes I should try to avoid making as I hook this up and start into this. Background . Heating 5000 sf mix of in floor, forced air, DHW. I burn mainly kiln died cutoff and scrap from my next door neighbor, truss manufacturing facility. I plan to isolate the stove with a heat exchanger from my existing system to allow it to stay HOT. I do not anticipate extended idle times but would be pleasantly surprised if that was a problem. Currently burning a Aquatherm 275 I have to fill about five times a day. Any suggestions appreciated… and when I say never burned, I mean it literally like like showroom floor. Price tag is still on the front and no smoke whatsoever.