3. INSTALL THE UNIT (CONT’D)
3.7 EXTERIOR OPENING(S) INSTALLATION (CONT’D)
1. For each duct, pull back the insulation to expose the interior flexible duct.
2. Connect the interior flexible duct to the smaller part of the Tandem transition (5’’ oval)
using a tie wrap.
3. Pull the insulation over the joint. Pull the vapor barrier over the insulation.
4. Apply duct tape gently to the joint in order to make an airtight seal
. See figures below.
1
2
3
4
EXHAUST AIR
TO OUTSIDE DUCT
ON TOP SECTION
12
3.7.1 TANDEM TRANSITION WITH DUAL EXTERIOR HOOD (CONT’D)
CAUTION
Always connect the exhaust air to outside duct on top section of the
Tandem transition.
Dual exterior hood requires assembly. Using 2 no. 8 x 3/4” screws, assemble the top
metal screen and the plastic grille to the dual exterior hood. Then, slide the bottom metal
screen to the dual exterior hood. See illustration below.
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