Napoleon Condo Pack - Page 26

26
IOM
IOM
W415-2288 / 08.29.2019
4.8.2 Return Air Ducting
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
24 1/8”x 8 1/4” (61 cm x 21 cm).
2. Align the unit opening with a return air
duct cut out.
3. Insert steel sheet extension part A
through the opening.
4. Align the upper edges, adjusting the
height.
5. Mount to the Condo Pack using four self-
tapping screws provided.
6. Insert second part B and mount to
extension part A using two screws from
inside. See cross section CC below.
Provide the support inside the building in the area of the return air opening. The support should be high
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.
1
7. Adjust sheet metal extension assembly
to the unit opening if necessary and cut
off extra sheet length.
8. Secure assembly using four screws D.
9. Use Aluminum foil tape to seal all
spaces between ashing of return air
duct and the unit.
A
A
D
B
B
Return Air Duct
24 1/8” x 8 1/4” Return
Air Duct Opening
24 1/8”
8 1/4”
Unit Opening
c
c
1
2
3
4
Return Air Duct
8 1/4”
Wall Sleeve
Unit
A
B
CC