49-5000640 Rev. 0
7
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arrangements will cause performance problems.
There are three indoor return air grille installation options.
Choose the option that best suits your
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installation details.
NOTE: For the main unit, use only one inlet filter in the installation.
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in the access panel/door.
Installation Overview
RETURN AIR GRILLE INSTALLATION OPTIONS
Unit-mounted filter with a field-supplied return
air grille and access door/panel
Option 3
RAVRG2* – Return air grille
Option 2
Filter
Filter
Outside wall
INST
ALLA
TION INSTRUCTIONS
RAVRG4* – Access panel with
return air grille
Option 1
Filter