I have purchased a new 6000CL fireplace and want to vent directly out the back. I have 14 inches from the back of the unit to the outside wall. I have been told locally that the draw is not as good as using the top.
Posted by Elite Deals - Chris M. on 24 October 2013 02:45 PM

Our Answer:

Indeed, a top-vent application that has a one or two foot rise before elbowing 90-degrees through a wall is preferable to a rear-vent. However, in most cases a 14" rear-vent run is perfectly acceptable and should work fine, as the normal maximum straight horizontal run is around 20".

From Section Page: Direct Vent Fireplaces

ID: direct-vent-fireplaces

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