05-22 Venting for HRV and furnace

Question: 05-22Code Section: 7Date:OBC 2006 Reference:

Question: On the attached picture (condensate for HRV and Furnace):  Do I have to vent through the roof?

Interpretation: (On. Reg. 403/97) Section indicates that the vent must go through the roof when fixtures are on 3 or more stories. Traps are required to prevent air flow from one unit to another on adjacent levels.