Napoleon Fireplaces Ascent Multi-View - BHD4 - Manuel (Page 22)

W415-1285 / 04.14.14
22
EN
4.2.1 HORIZONTAL AIR TERMINAL INSTALLATION
A. Stretch the inner fl ex pipe to the required length taking into
account the additional length needed for the fi nished wall
surface. Apply a heavy bead of the high temperature
sealant W573-0007 Mill Pac (not supplied) to the inner
sleeve of the air terminal. Slip the vent pipe a minimum
of 2” (50.8mm) over the inner sleeve of the air terminal
and secure with 3 #8 screws.
B. Using the outer fl ex pipe, slide over the outer combustion
air sleeve of the air terminal and secure with 3 #8 screws.
Seal using high temperature sealant W573-0002 (not
supplied).
C. Insert the vent pipes through the fi restop maintaining the required
clearance to combustibles. Holding the air terminal (lettering in
an upright, readable position), secure to the exterior wall and
make weather tight by sealing with caulking (not supplied).
D. If more vent pipe needs to be used to reach the fi replace, couple
them together as illustrated. The vent system must be
supported approximately every 3 feet (0.9m) for both vertical
and horizontal runs. Use noncombustible strapping to
maintain the minimum clearance to combustibles.
The air terminal mounting plate may be recessed into the exterior wall or siding no greater than the depth
of its return fl ange.
23.1B
SCREWS
#10x2"
2" (50.8mm) OVERLAP
OUTER FLEX PIPE
INNER FLEX
PIPE
HIGH TEMPERATURE
SEALANT
CAULKING
HI-TEMP
SEALANT
#8 X 1/2” SELF DRILLING
SCREWS & WASHERS
INNER COUPLER
OUTER COUPLER
OUTER
FLEX PIPE
INNER
FLEX PIPE
OUTER
FLEX PIPE
E. The vent shield must be installed only when terminating horizontally. Remove the two screws nearest
the vent collars on the top of the appliance. Align the vent heat shield (supplied) and secure. Adjust the
vent heat shield to touch the fi restop spacer, as shown below.