merry christmas everyone. this is my first post so dont beat me up to bad. need some help. First this is what ive got. 1500 sqf home with a 140,000 btu crown NG boiler all base board heat. im building a 2200 sqf detached garage which will have two floors first floor radiant in slab and second radiant stapled up under floor. what i would like to do is supply both buildings with my Greenwood 100 that is in a shed about 30 feet from the house.I plan on using a 50 plate heat exchanger with a wraparound pump to NG boiler loop in the house. im completely new to wood boilers so plubming , pump sizes etc will be needed. I was thinking about using a 80,000 BTU hot water heater in the garage as a backup to the radiant and for DHW in garage. The garage will be 100 feet away from house. Greenwood says that the 100 model needs 1.25 lines at 10 gpm. Most of the time wood boiler will be on except when we go away on weekends .I'm in upstate NY. ANY HELP WILL BE GREAT. Thank you.