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W415-2339 / C / 02.08.21
EN
20
installation
3.1.1 horizontal installation
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 length of the vent shield may be cut shorter for
combustible walls that are less than 8 1/2” (215.9mm)
thick but the vent shield must extend the full depth of the
combustible wall.
A. Assemble the shield to the spacer as shown, using the 3
shorter screws supplied.
B. Place the fi restop top so that the vent shield covers the top of
the vent within the opening. Ensure that both spacer and shield
maintain the required clearance to combustibles.
C. Secure the spacer in place using the 4 longer screws supplied.
Once the vent pipe is installed in its fi nal position, apply sealant between the pipe and the fi restop spacer.
• 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.
!
WARNING
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).
note:
DETERMINE
THE
CORRECT
HEIGHT
CAULKING
FIRESTOP
SPACER
VENT
SHIELD
FINISHING
MATERIAL
CAULKING
note:
The above is for illustration purposes only. Vents
do not always pass through center of frame.
ADD
WIDTH
ADD
HEIGHT
10 11/16"
(27.1cm)
10 11/16"
(27.1cm)
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