AIR CONDITIONER - Continued.
For ease of connections to duct work and grilles, galvanized metal duct
extensions should be attached. They should be fabricated to the same size as
the air openings. See Figure 4-1 They should extend through the wall far enough
to make connections. For applications with no duct work, extension should be cut
flush with the inside wall. All connections should be secured with screws and
sealed airtight before insulating.
Install duct extensions to the unit with sheet metal screws and seal around the seams with silicone
adhesive or pressure sensitive tape where the duct extensions meet the unit.
Use a forklift or other heavy lifting device to lift the air conditioner. The
unit is heavy and has a high center of gravity.
(5) Lift the unit off the shipping base and onto the wall-mounted brackets. Retain shipping base for reuse.
(6) Secure the unit to the wall with the attaching hardware.
(7) Install metal weather stripping at the top of the unit and seal with silicone adhesive so it is water-tight.
4-7. FRESH AIR DAMPER.
Blank Off Plate Removal
Remove the two screws ('1, Figure 4-7) securing the blank off plate (2) to the bottom front door
assembly (3) and retain.
Pull the blank off plate (2) down and away from the bottom front door assembly (3).
Fresh Air Damper Installation.
Remove the two screws (4, Figure 4-7) from the bottom front door assembly (3) and retain.
Turn the 1/4 turn fastener (5) on the bottom front door assembly (3) and pull the door open
Cut the insulation away from the opening In the bottom front door assembly (3) that was covered by
the blank off plate (2) and close the door.
Insert the lip on the top of the fresh air damper (6) Into the top of the slot on the bottom front door