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920-075-07(10-03)
4) IndoorReturnAirGrilleInstallation
There are three Indoor Return Air Grille options as shown in Figure8, Choose the optionthat best suits your needs. Use the installation
instructions providedwith accessories for installation details,
Figure8
ReturnAir GrilleOptions
Option I
VPRG4
ReturnAir Grille with AccessPanel
A field-supplied(25"x 20")filteris
mountedinsidethehingedaccessdoor.
I
VPRG2
_ ....... ReturnAir Grille
Unitrequiresa field-supplied
accessdoororpanelanda
_ _ _\_ _รท 16"x20" filter.
All Vert-I-Pak chassis are shipped with a
14x 20 filter installed. Ifan accessory filter
holder isto be used,you MUST removethe
factory shipped filter from the chassis. Do
NOT use two filters
Notes:
A. These are the Friedrich recommended returnair grine /filter / access panel arrangements. Consultthe factory on other
arrangements. Improper return air arrangements will cause performance problems.
B. Return air arrangements are shown from the front, butcan also be installedfrom the right or left sideof the unit.
10
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