Minimum Framing Dimensions - Napoleon Ascent 46 B46NTR Installation And Operation Manual

3.1

minimum framing dimensions

HORIZONTAL VENT SECTIONS: A minimum of 1" (25mm) at the bottom and sides and 3" (76mm) at the top of
the vent pipe on all horizontal runs to combustibles is required.
note:
The minimum clearances from the top of the horizontal vent pipe to combustible materials may
be reduced from 3" (76mm) to 1" (25mm) in those installations with a minimum 38" (96.5cm) vertical
vent rise made immediately off the fireplace collar.
VERTICAL VENT SECTIONS: A minimum of 1" (25mm) all around the vent pipe on all vertical runs to
combustibles is required except for clearances in appliance enclosures. See "minimum enclosure clearances"
section.
(51mm)
46 1/2"
(118.1cm)
18 9/16"
(47.1cm)
2"
Do not put objects in front of the appliance
(minimum distance of 4 feet)
rough framing
42 11/16"
(108.4cm)
W415-2370 / D / 12.09.20
EN
25