Hot Water Vent Downslope?
Do you still have the installation manual? It should specify what the toal length of run for the venting can be, and how many elbows etc. that you can use.
Generally, you aren't allowed to run your venting downwards, only upwards. It would also be a concern as to how many feet of venting material would end up being outside (it could freeze up in the off cycle)
I have used a reducing coupling at the vent termination to increase the velocity of the exhaust stream to push it further away from the house with some measure of sucess in the past, but you may want to check with a local gas fitter and ask what options are permissable in Ontario.
Last edited by HVACDave; 05-31-2012 at 08:01 AM.