Instruction Manual

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5. Plug any unused holes to prevent air loss.
7.3 Placing the air filters
Air filters remove airborne particles from the cabin air and keep the evaporator coil clean. Place one air filter, either on the air con-
ditioner or in the return air grille, for each air conditioner.
7.4 Placing the grilles and transition boxes
Consider the following when placing the grilles and transition boxes:
• Install the supply air grille as high as possible in a location that will provide uniform air distribution throughout the cabin. Di-
rect the grille louvers upward.
• Install the return air grille as low and close to the air conditioner as possible to ensure airflow to the evaporator.
• Do not direct the supply air discharge towards the return air grille, as this will cause the system to short cycle.
• Allow for adequate clearance behind the supply air grille for the transition box and ducting connection. Refer to Table 1: Mini
mum duct and grille sizes per BTU capacity on page 6.
8 Installation
This section explains how to install the self-contained air conditioner.
8.1 Installing the mounting brackets and condensate drain
NOTICE!
To prevent cracking the drain pan, do not use more than two layers of plumbers tape to wrap the hose barb, and do not
overtighten the hose barb.
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