I have a dryer vent and natural gas furnace vent coming out the wall with in inches of each other is the dryer vent to be raised above or below the furnace vent and how far either way? Thanks in aadvance.
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If you have the furnace manual, look at that.
Otherwise this is based on the national standards.
http://www.rinnai.us/documentation/downloads/Builder_RC98e_Spec.pdf
Look at pages 2,3.
For those items that are *'ed for the US, but have numbers for Canada my furnace shows the same as the Canadian. For the other items 12".
But from what I see their is nothing exactly covering a dryer vent. But I would use 12".
But I would be concerned about the furnace inlet vent if you have and external one. Either part of the exhaust or separate.
I would suggest at least 12" horizontally. If they are over/under I am not sure how much. But more if possible.
William the Geezer, the sequel to Billy the Kid - Shoe
Theoretically, the dryer exhaust and the furnace flue (assuming this is what you are referring to) shouldn't need separation, but codes may say otherwise. They are both exhausting, so don't think there would be a problem. If the furnace vent is the fresh air intake ... that is an entirely different story. You don't want the dryer exhaust affecting the combustion air intake in any way ... lint and moisture would not be good for the combustion process.