Replies

1. 
   Seth_Frankel | Apr 15, 2002 05:42am | #1

   From your note it sounds like your thinking of a forced air system. For a shop that's not ideal but will work fine - esp for fine finishing. The less air movement the better. Is the furnace in the same space as the machine tools? Are you able to "closet" the furnace to protect from dust?

   I've installed a furnace in my shop recently and have asked the same questions to several furnace installers. The general answer has been that a normal furnace without sealed combustion is fine, but minimizing the dust entering the furnace is best. Sealed combustion is still better. Personally, I installed a Armstrong 80% efficient sealed combustion unit. I like having the combustion air totally seperate from the building. It also will save you money in heating costs as a non-sealed combustion unit will need a combustion air source, often required two 6" diameter ducts from the outside - lots of cold air! Sealed combustion only requires one 3" duct that only enters the furnace and never is mixed with the building's air.

   Hope that's useful.

   Best,

   Seth

1. 
   BrianBeek | Apr 16, 2002 05:59am | #2

   Thanks, Seth! I have considered enclosing the furnace, etc.. I may yet spring for the sealed unit.

   Yours,

   Brian