hello folks, I am installing Preway style fireplace. The unit has an 8 inch diameter chimney. The dimensions of the fireplace are nearly identical to the Malm Zircon 38. The chimney on the Zircon 38 is 9 inches and they advertise that a 10 inch converter is available. My fireplace is 36" wide.
My plans are for a through the wall installation, so there will be two elbows involved. So here is the question... am I at risk of having draw issues with an 8 inch chimney with two elbows? Should I go with a 8 to 10 inch converter and run 10 insulated Duratech or should 8 inch Duratech be ok? Is there any downside (besides addtional expense ) of going with the 10"?
Thanks for the input!!