rotaxman said:
I would tie into the return and the blower from your oil furnace will pull the heat through.
That is a rather bad idea, rotaxman, and can be a code violation... The problem is that the original furnace is not designed to deal with hot air coming into it's intake, and can be damaged by it depending on how much heat is involved.
In addition, there can be a problem if the OP's system includes an AC unit - in theory a Freon leak could react with the HX on the wood burner and deliver toxic gases into the ventilation system...
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DM - I would suggest looking at some of the other threads in this area, do a search on "furnace install" to start with and see how others have hooked up their units.
I don't know how familiar everyone is with your unit, so if you could post a few pics of it, that might be helpful, also possibly some pictures of your existing duct setup - the more info you give us to work with, the better we can help you out...
Assuming this is a furnace style unit, as opposed to a wood stove designed primarily for direct heating with some supplemental duct work connections, I would say that it sounds like you would need to connect the ductwork into the distribution side of your HVAC system, using metal ducts and paying attention to required clearances from combustibles.
What are you going to do for venting the combustion gasses? Do you currently have an unused suitable flue available for the furnace? (You can NOT share the flue with another appliance!) If not, how do you plan to add a chimney? Also another question, what are you doing for a wood supply? If you don't already have it cut and ready, it may well be to late to plan on burning much this season as you will likely find it difficult to get adequately seasoned wood this late in the year...
I would say that you might be best off to either go with JEB's suggestion of hiring a pro to do the work, or else plan on spending a LOT of time reading other threads here - this is the kind of job that can be done by a competent DIYer, but you are dealing with equipment that MUST be installed and handled properly or you are placing yourself and your family at great risk - fire and smoke can be deadly if not handled properly... We will do our best to help you out, but you have to be ready for doing the homework on your side.
Gooserider