I guess a good question to ask if anyone here is Canadian...
In my area, we have
which override the gas code in our jurisdiction. On page 34 & 35 you can see clearances for terminations.
I am venting three appliances, all system 636 3" (Two 75 gal. water heaters and one high-eff furnace). Based on what I see in this code, as long as I am 12" away center to center from each concentric vent I should be okay. Now the manufacture instructions say that if I vent three concentric vents, two can be grouped together (12" center to center receptively), and the third must be 36" away.
Do I follow the manufacture instructions, or the gas code?
Also, am I correct to assume there are no clearances required for a stale exhaust from an air exchanger, just the inlet which according to this code is 6'?
Thanks in advance!