Rough Framing; Minimum Framing Dimensions - Napoleon B36PTREA-1 Installation And Operation Manual

3.1

minimum framing dimensions

HORIZONTAL VENT SECTIONS: A minimum of 1" (25mm) at the bottom and sides, and 3" (76.2mm) 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" (76.2mm) to 1" (25mm) in those installations with a minimum 38" (96.5cm) vertical vent rise made immediately
off the appliance 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. Vertical runs within the enclosure must
maintain a 3" (76.2mm) clearance from combustibles. See "minimum enclosure clearances" section.
side wall
35 1/2"
(90.2cm)
16"
(40.6cm)
2"
(51mm)
Do not put objects in front of the appliance
(minimum distance of 4 feet)

rough framing

35 1/8"
(89.2cm)
W415-3093 / B / 05.06.22
EN
27