Horizontal Installation - Napoleon Ascent BHD4PNA Installation And Operation Manual

5.1

horizontal installation

WARNING
!
• The fi restop assembly must be installed with the vent shield to the top.
• Terminals must not be recessed into a wall or siding more than the depth of the return fl ange of the mounting
plate.
This application occurs when venting through an exterior
wall. Having determined the correct height for the air
terminal location, cut and frame a hole in the exterior wall,
as illustrated, to accommodate the fi restop assembly. Dry
fi t the fi restop assembly before proceeding to ensure the
brackets on the rear surface fi t to the inside surface of the
horizontal framing.
The vent shield must be installed to the full depth of the
combustible wall. The length of the vent shield may cut
shorter for combustible walls that less than 6" (152mm)
thick.
note:
Bend the tabs for reduced side clearances or move
the shield for reduced top clearances. Do not fi ll
the air space between the fi restop spacer and the
exterior wall with any type of insulating material (i.e.
spray foam).
A. Apply a bead of caulking (not supplied) around the
corner edge of the inside surface of the fi restop
assembly, fi t the fi restop assembly to the hole and
secure using 4 screws.
B. Once the vent pipe is installed in its fi nal position, apply red RTV silicone (W573-0002) (not supplied)
between the pipe and the fi restop.
CAULKING
FIRESTOP
note:
The above is for illustration purposes only. Vents do
not always pass through center of frame.
C
A
venting installation
(35.6CM)
HEIGHT
VENT
height
SHIELD
Vent
SPACER
Caulking
shield
Firestop
spacer
CAULKING
Determine
the
FINISHING
correct
height
MATERIAL
Finishing
material
16.2A
C
EN
ADD 14"
ADD
14"
WIDTH
(35.6CM)
width
DETERMINE
THE
CORRECT
HEIGHT
25
W415-4020 / 08.09.21