Friedrich VERT-I-PAK VHA09K Installation & Operation Manual page 18

Single package heat pump

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Wall Plenum Installation

Step 3 - Inside Wall Plenum (cont.)

NOTE: Do not place any screws, fasteners, or penetrating holes through the top or bottom of the plenum

assembly.

1. Drill pilot holes on the interior of the inside plenum half (Part B) as show in Detail B. Pilot holes should be

located approximately 4" from the top and bottom of the inside plenum half, on both the left and right sides.

2. Install fasteners through each pilot hole. Fastener must pass through both Part A and Part B. If the inside and

outside plenum halves do not overlap at fastening point, be certain to drill extra holes where needed to secure

both Part A and Part B to the rough opening.

Detail B

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