Installation Instructions
RETURN AIR GRILLE INSTALLATION OPTIONS
The room return air grille may be installed toward the front or either side of the unit. Improper return air arrangements will cause performance problems.
There are three indoor Return Air Grille Installation options. Choose the option that best suits your installation requirements. Follow the Installation Instructions provided with the return air grille accessory for installation details.
NOTE: Use only one filter in the installation. The filter may be installed on the unit or in the access panel/door.
Outside wall
Unit-mounted filter with a field-supplied return
air grille and access door/panel
RAVRG1 – Access panel with
return air grille
Filter
Option 1
RAVRG2 – Return air grille
Filter
Filter
Option 3
Option 2
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