StokerDon wrote:Since the BairMatic is a nice square boiler, it should be easy to insulate. I plan on going overkill with the insulation. 3.5" Roxwool R-15 with 1" foamboard R-7.5 as an outer skin. The insulation will be part two of the project. Then we will see how that effects coal consumption. This will also allow enough boiler run time to fix any leaks that crop up. -Don
Don, If this was going into my basement, I would not install that much insulation on it. Being in the basement you will not be losing that much heat outside the house. As the heat should stay in the house unless the basement is very loose. 1" of fiberglass board insulation should be more than enough to prevent radiant losses from the boiler. The mistake made on most boiler insulation jobs is not sealing the seams with tape and mastic.In other words loose seams and gaps in coverage. A good job of fitting the fiberglass board insulation to the boiler shell and than sealing the seams will do more for you than piling on extra insulation.
The idea behind insulating boilers and piping is to help control heat loss by preventing radiation and convection losses, piling on extra insulation usually does not assist in those areas.
Fiberglass board is easy to work with and should be fitted before the piping is installed on the boiler. It will make a much better, tighter job of it if it is installed before piping.
Somewhere here on NEPA, I posted a source for fiberglass board and supplies.