Horizontal Air Terminal Installation - Napoleon BHD4P Installation And Operating Instructions Manual

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 Mill Pac sealant
(W573-0007) (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 a minimum of 3 #8 screws.
B.
Using the outer fl ex pipe, slide over the outer
combustion air sleeve of the air terminal and secure with
a minimum of 3 #8 screws. Seal using red RTV silicone
(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.
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 firestop spacer, as shown below.
CAULKING
2" (50.8mm) OVERLAP
HIGH TEMPERATURE
#10x2"
SCREWS
#8 X 1/2" SELF DRILLING
SCREWS
HI-TEMP
INNER COUPLER
SEALANT
OUTER COUPLER
OUTER
INNER
FLEX PIPE
FLEX PIPE
23.1C
W415-1285 / F / 12.21.16
23
EN
OUTER FLEX PIPE
SEALANT
HI-T
SEA
OUTER
FLEX PIPE