Nope, not one drain in the basement.
I went out last night and got a 1 1/2 x 1 1/2 x 3/4 tee, a 45, a reducer and a hose barb that I'm going to fit into the kitchen sink drain just below the floor joists. That's below the p trap but I'm hoping a loop in the drain line and the check valve in the pump will take care of any sewer gas issue. I got a mapp gas torch because I didn't think the propane torch would work, so I think I'll be good to go.
I'd appreciate any feedback on potential problems with this install so I can avoid headaches with it in the future.
As a side note, don't you love getting into a project and uncovering shoddy work that has to be repaired before you can do your job? When I removed the side panel from the unit last night, I found that there's no provision for securing the filter. There was a filter in there but it was just bent in half and stuffed into the enclosure near the fan.
A while back, I was installing a gas pipe down there and got shocked when I touched the pipe and a duct at the same time. Turns out they ran the t-stat wiring through a hole they punched in the sheetmetal of the heater and never installed a grommet. The metal wore through the wire insulation and viola! 110 v coming from a duct!
Edit: The more I think about it, the t-stat doesn't get 110v. I'll have to do some more poking around to see if anything else is shorted.