Napoleon P-E Série Instructions D'installation Et D'opération page 26

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4.8.2 Return Air Ducting
Provide the support inside the building in the area of the return air opening. The support should be high
IOM
IOM
enough to allow for return air to the unit as per requirements.
If required, install a resilient material between the support and the base of the unit to reduce the possible
transmission of sound and vibration.
Unit Flashing
To seal the unit to return air duct (below the support
structure), perform following procedure steps:
1. Cut a hole in the return air duct
2. Align the unit opening with a return air
3. Insert steel sheet extension part A
4. Align the upper edges, adjusting the
5. Mount to the Condo Pack using four self-
6. Insert second part B and mount to
CC
8 1/4"
7. Adjust sheet metal extension assembly
8. Secure assembly using four screws D.
9. Use Aluminum foil tape to seal all
W415-2288 / 08.29.2019
24 1/8"x 8 1/4" (61 cm x 21 cm).
duct cut out.
through the opening.
height.
tapping screws provided.
extension part A using two screws from
inside. See cross section CC below.
Unit
A
Return Air Duct
B
to the unit opening if necessary and cut
off extra sheet length.
spaces between flashing of return air
duct and the unit.
1 1
Unit Opening
24 1/8" x 8 1/4" Return
Air Duct Opening
Return Air Duct
2
A
3
B
Wall Sleeve
4
c
B
A
D
c