On Wed, 4 Nov 2009 13:22:48 -0800 (PST),
wrote:

There are two ratings on the furnace, one is 45,000BTU and the other
is 61,500BTU, but the furnace was made in Quebec and everything
written on it is in FRENCH! Online translators were no help in
figuring out what the tag says...

Then you have to find a person who knows French. Shouldn't be hard.
If he knows a little bit about furnaces, that would be good too, but
probably not essential. Take what he tells you and post it here.