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Any advise on a brand new from the ground up steam heating system
Hi all, first I cant say enough good things about Dan's book on the lost art of steam heating. I've learned so much already. Bottom line on top, I'm building a new home that's off grid and I decided I wanted standing pilot propane fired steam for heat. rational is no electricity at all to run it. Any feedback or advise would be appreciated.
The building is on a slab with two more floors above it. The slab floor will not be heated with steam. the second floor 26 x 34 and the 3rd floor 16 x 32 will be heated with steam. I'm in heating zone 5 but for insulation I'm planning on R60 in the ceiling and R30 in the walls. that said I plan on a 45 Factor so aprox 62820 BTU's heat load.
I have 10ft ceilings between the slab and the first floor so plenty of room for all the min A and B dimensions and pitching pipes.
I'm planning a one pipe system in which the condensate flows with the steam. I also plan to drip my 3rd floor riser as well as all the risers to each radiator. For venting I'm planning a T at the top of each radiator riser with a vent, vents on the radiators, and a main vent at the end of each main. I am planning on using the tables in Dan's book for sizing the main, branches, and risers ect, but my question comes in when I get to the end of my main feed run if its at the far end of the building from the boiler, can I tie it into the last dripped riser provided I'm using a water seal at the end of the dripped return line or do I need to bring it back separately to the boiler? I think if I seal the dripped returns into a wet return that steam will never go into the dripped return piping. I don't see many drawing examples online of one pipe steam piping that use dripped risers as a standard under each radiator. Is there a reason why? I like the idea of never having condensate run in the opposite direction or even the idea of having condensate flow in the same direction as the steam if it does not have to. Obviously there will be some during start up but I'm talking about steady state running.
Any advise on what to look out for, the better brands steam boilers, standing pilot LP valve, or controls to select? I was hoping for a boiler that had multiple feed taps but I don't know if I will find one that small with two.
Any advise on safety control devices that are mili-volt rated? I looked as some specs on low water cut offs but didn't find any that were approved to run with thermal-pile voltage ratings.
Any advise on brands of piping insulation?