Napoleon GX42NTRE Manuel D'installation page 22

rough framing
EN
3.2 minimum clearance to combustible enclosures
note:
Vent Sections
When passing through a wall, use firestop spacer W615-0162 (supplied).
When passing through a ceiling, use firestop spacer W500-0096 (not supplied).
Top Vent
72"
(183cm)
Ceiling (min.)
Horizontal vent sections: A minimum clearance of 3" (76mm) on the top outside of the enclosure and 1"
(25mm) on the sides and bottom outside of the enclosure all around the vent pipe on all horizontal runs to com-
bustibles is required. Horizontal vent sections within enclosures require a minimum clearance of 3" (76.2mm) at
the top of the vent pipe.
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 appliances enclosures. Vertical vent sections within enclosures require a mini-
mum clearance of 1" (25mm) around the vent pipe.
TOP EXIT ENCLOSURE
The appliance requires a minimum enclosure height of 52 5/8" (133.7cm). For temperature requirements, the en-
closure space around and above the appliance must be left unobstructed.
* See "minimum framing dimensions" section for details on reducing vent pipe top clearances.
These parameters apply to all illustrations found in the "minimum clearance to combustible enclosures" section.
**The minimum clearances around the vent pipe may be reduced from 3" (76mm) to 1" (25mm) in those instal-
lations with a minimum 38" (96.5cm) vertical vent rise made immediately off the appliance collar. Some venting
configurations that require more vertical rise will require a larger enclosure to provide minimum vertical clearance
between vent pipes and combustibles.
22
W415-1794 / 06.28.18
All manuals and user guides at all-guides.com
Minimum**
3" min.
8" (203mm)
(76.2mm)**
non-com-
bustible
material
52 5/8"
(133.7cm)
41 1/8"
(104.5cm)
1" (25mm)
3"
(76.2mm)
3"
(76.2mm)**
1" (25mm)
45 5/8"
(115.8cm)
Minimum
plus rise*