Disclaimer , this is not an approved setup so this post is for entertainment only !
Been running my Scotty like that for about 5 years , I set it in the porch and ducted it into the house with a 12" duct .
I don't have any of the electrics hooked up , I set my draft manually according to what temps I want in the house .
The first couple of years I ran it with a box fan , it worked ok until -10C so I got a furnace blower from a small electric furnace , that one will move more hot air into the house and works fine to -20C as long as it's not windy .
I have to pick up a furnace blower from an oil fired , I'll pick the windings that I need for the outdoor temps .
My porch is unisulated but it has a 4" duct and will stay at 20C in the coldest days , I also leave the kitchen door to the porch when cold so that the air flows .
I should also poke another 12" into the house for better flow .
I hope that makes sense .
NB
Not CSA approved to run it like that so I would suggest that one should not do this for it is not an approved setup .