The higher pressures are for taller building to keep water completely filled in the system. Your radiant system should have no problem operating at the 10 psi. This is because the heating loops are below the heating system so we are not trying to push the water above the boiler. I would no...
That is correct the chimney must terminate 2' above anything within a 10' radius. Another option would be installing a power venter which would allow you to vent the heater out the sidewall of the garage. Field Controls makes such a unit
Been looking at this site for awhile. I live in Maryland and just got a 12' x 24 garage. I've insulated the walls and installed paneling on the walls. Looking to paint the walls next and install a black and white floor. Then I will ventilate the soffits and install something on the ceiling...