Hey, this is my first post on this forum. I have been doing a lot of reading for about a year now. I decided to take a gamble, and I purchased a 1 year old GARN WHS 2000 from a member on here. I hauled it from central WI to my home in central MI. With the GARN, I received several pumps, water to air hanging shop heater, water to water HX, several valves, some controls, and various other things. This was a fully installed and functioning unit when we removed it. The only major things that I did not get with it is the plumbing to run water underground from the GARN to the house and a water to air HX to fit in my forced air furnace. I currently have a propane fired forced air furnace with central air. I am planning on heating my ranch house with walkout basement, (1,700 SF footprint) domestic hot water (2 kids 2 adults), and 40X60 barn (40-50 deg). I am installing the boiler inside an insulated enclosure in my barn, which is about 70’ from my house. I have read that the GARN is not the best boiler for forced air, so I am thinking of puting in several panel radiators to maintain temp and have the furnace kick in when it needs to buffer it a little bit. My basement is unfinished so everything is fairly easy to access. I am afraid of putting in radiant floor heat as I plan to put in hard wood floors someday. I am planning to do this all myself and purchase the necessary parts from Heaterman, as he is not too far from me. I have attached my idea of how I think I should plumb it. I would greatly appreciate input from anyone and don’t be afraid to tell me I am way off track. I do want to keep this system simple as I can.