rberq wrote:The Mark II is not really designed to go into ductwork. A lot of radiant heat comes off the sides, so presumably you would want to encase those within the ducting... Where was your pellet stove? Have you considered leaving the oil furnace in place, unchanged, and just put the Mark II in where the pellet stove sat?
I plan to encase the top and air outlets in the ductwork. I know there will be a bunch of radiant heat I won't capture, but I think that will be OK. We lined the cellar walls with double-bubble-foil-foil, so hopefully it will bounce around until it heats something that I want to heat (except for the floor). I imagine they sized the blower fan to the output of the stove, so I'm thinking a bigger fan would be overkill. I will be putting booster fans on the farthest outlets though. I bought a nice one (actually for my passive solar panel) that has a thermostatic control and three speeds -- works like a champ.
The situation with the pellet stove was that the floors remained cool and cellar stayed moist through part of the heating season, which I'm hoping this setup will fix. We're not scared to get rid of the furnace, but I do need to insulate all the pipework for the very unlikely occurrence that the stove goes out for a couple of days without anyone to feed it. Last year the cellar stayed at 45 degrees without the furnace on for weeks during the cold season, and we had two good snaps of -10 temps outside.
We've got a small cape with an addition (1500 square feet) and we've torn out whole walls to create an open feeling and air circulation throughout.