GE Zoneline AZ9VH Owner's Manual And Installation Instructions page 8

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