Direct vent flues

[DonTx]

The chimney structure is for a Heat-N-Glo model SL950TV-C and the short flue is from a SL550TR-C.

Do direct vent flues fall under the 2/10 rule?

The short flue was about 5 feet away from the Chimney structure and about 6-8 away from the roof to the right.

Download Attachment: flue1.jpg

123.35 KB

Download Attachment: flue2.jpg

124.4 KB

[Brian G]

Hey at least they put a cricket behind the chimney, hardly ever see 'em here. They usually just flash straight across and caulk like hell.

Brian G.

[Konrad]

I just read this the other day in my Code Check tablet. Its a variation on the 2/10 rule, basically, 2/8: "If closer than 8 feet toa wall, vent must extend 2 feet above roof."

That framed chimney isn't exactly a wall. I might try explaining that wind oscillations on the downwind side of the framed chimney would possibly cause backdrafting of the flue, on occasion.

But more importantly, you appear to have the manufacturer's identity. They are the best advocate you can probably have. What do they say?

[washirw]

So Donald,

What did you decide to write up on this? That is, if you can remember something this many months ago. Thanks.

[Steve Knight]

I just inspected a Heat-N-Glo gas fire place and found their product installation manuals on the web at http://www.heatnglo.com/products/fireplaces/index.asp. The model I inspected was SL-550TRS-D. There was a table in the installation manual showning minimum height from roof to lowest discharge opening (bottom of termination cap). The required height above the roof depends on roof pitch. The roof I inspected was 6/12 and required height above roof was a minimum of 12". The termination cap is also suppose to be 2' minimum from a vertical wall or horizontal overhang.