My PVC MOJO's not as good as I'd like.

What am I looking at on the left of this 90? Is that 2nd HX condensate leaving from the blower compartment area and going down to a floor drain? Is that an air break just above it or a caped clean out? Where is that clear tube going up out of the pic? I see a second PVC tight to the cabent tapping near the bottem of the cabent. Wait a min, that would be the 2nd HX, no?

Sorry that pics as good a view as I have on this VHS tape.