Boiler system is up and running, all plumbing, circulators, and heat calculations are all based off John Siegenthaler's Modern Hydronic Heating, 790 page text book. It was alot of reading but I had 4 months of a deployment to devote myself to reading the book and doing all the chapter lessons.
Quick specs:
1922 Bungalow in Buffalo, NY 1,700sqft blown cellulose insulation in walls, double pane Low E windows, R35 fiberglass insulation blanket. Design loss calculation : approx 45-50K BTU/HR
Paxo 25 Wood Gasification Boiler, New terra cotta thimble connecting to 8X11 clay flue tile chimney exterior wall approx 25FT tall.
Primary Piping, 1 1/4" black iron off boiler to circulator flange and danfoss boiler return protection valve, then 1 1/4" Type M copper.
Homemade unpressurized storage tank built with the concepts from Builtitsolar DIY tank. Tongue and groove OSB, 2x4s doubled up, glued with PL Premium salvaged Polyisocyranate commerical roofing foam board 3" thick. One layer inside tank wall, one layer outside wall and laminated to the outter shell. R-48 total. Inside water volume ~ 830gals. Heat exchanger is 3x60ft 3/4" copper coils in reverse parallel coiled evenly in the tank. 60Ft DHW coil stacked in upper 1/3 of tank, 100ft coil Solar Hot water coil in lower 1/3 of tank (future project ) Max temp based on heat exchanger performance 190F, Min useable water temp, 110f. 550,000BTU usable storage.
Heat emitters, 5 loops 1/2" Pex AL Pex staple up radiant first floor, 250ft each. Thin original harwood floor, and porcelain tile. 2nd floor, 3 bedrooms with Runtal PR2F-8 commercial radiators courtesy of BUPALOS. Master bath in the future will be radiant poured in lightweight concrete/gypsum.
Distribution system: 10 Port MR Pex stainless manifold station, 2 wire thermal actuators, 1" copper piping, Grundfos Alpha circulator pump, Taco ZVC406 6 Zone valve control center, appropriate thermostats in zoned rooms.
Mixing system: Tekmar 356 injection control ourdoor reset controller connected to Grundfos 42-10 pump, 3/4" barrier pex connects primary boiler loop to distribution loop. Controller modulates the pump to maintain distribution loop temp calculated for outdoor reset.
Pics:
Quick specs:
1922 Bungalow in Buffalo, NY 1,700sqft blown cellulose insulation in walls, double pane Low E windows, R35 fiberglass insulation blanket. Design loss calculation : approx 45-50K BTU/HR
Paxo 25 Wood Gasification Boiler, New terra cotta thimble connecting to 8X11 clay flue tile chimney exterior wall approx 25FT tall.
Primary Piping, 1 1/4" black iron off boiler to circulator flange and danfoss boiler return protection valve, then 1 1/4" Type M copper.
Homemade unpressurized storage tank built with the concepts from Builtitsolar DIY tank. Tongue and groove OSB, 2x4s doubled up, glued with PL Premium salvaged Polyisocyranate commerical roofing foam board 3" thick. One layer inside tank wall, one layer outside wall and laminated to the outter shell. R-48 total. Inside water volume ~ 830gals. Heat exchanger is 3x60ft 3/4" copper coils in reverse parallel coiled evenly in the tank. 60Ft DHW coil stacked in upper 1/3 of tank, 100ft coil Solar Hot water coil in lower 1/3 of tank (future project ) Max temp based on heat exchanger performance 190F, Min useable water temp, 110f. 550,000BTU usable storage.
Heat emitters, 5 loops 1/2" Pex AL Pex staple up radiant first floor, 250ft each. Thin original harwood floor, and porcelain tile. 2nd floor, 3 bedrooms with Runtal PR2F-8 commercial radiators courtesy of BUPALOS. Master bath in the future will be radiant poured in lightweight concrete/gypsum.
Distribution system: 10 Port MR Pex stainless manifold station, 2 wire thermal actuators, 1" copper piping, Grundfos Alpha circulator pump, Taco ZVC406 6 Zone valve control center, appropriate thermostats in zoned rooms.
Mixing system: Tekmar 356 injection control ourdoor reset controller connected to Grundfos 42-10 pump, 3/4" barrier pex connects primary boiler loop to distribution loop. Controller modulates the pump to maintain distribution loop temp calculated for outdoor reset.
Pics:
