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4) Indoor Return Air Grille Installation
There are two Indoor Return Air Grille options as shown in Figure 8. Choose the option that best suits your needs. Use the installation
instructions provided with accessories for installation details.
Notes:
A. These are the Friedrich recommended return air grille / fi lter / access panel arrangements. Consult the factory on other
arrangements. Im prop er return air arrangements will cause per for mance problems.
B. Return air arrangements are shown from the front, but can also be installed from the right or left side of the unit.
Return Air Grille Op tions
All Vert-I-Pak chassis are shipped with a
14 x 20 fi lter installed. If an accessory fi lter
holder is to be used, you MUST remove the
factory shipped fi lter from the chassis. Do
NOT use two fi lters
Figure 8
Field Supplied
Return Air Grille
Must have a minumum of
220 square inches of free
area.
VPRG4
Return Air Grille with Access Panel
A fi eld-supplied (25" x 20") fi lter is
mounted inside the hinged access door.
Option 1
Option 2