Intertek ACVC96 Service Instructions Manual page 39

INSTALLATION CONSIDERATIONS
COUNTERFLOW FILTER INSTALLATION
This furnace has provisions for the installation of return air
filters at the counterflow top return. The furnace will accom-
modate the following filter sizes depending on cabinet size:
Optional
Access
Door
Refer to Minimum Filter Area tables to determine filter area
requirement. NOTE: Filters can also be installed elsewhere
in the duct system such as a central return.
Horizontal Installations
Filter(s) must be installed external to the furnace casing for
horizontal installations. For most installations it is prefer-
able to use a central return with filters installed in the duct
behind the return air grill. In this way filter replacement is
relatively simple by merely removing the grille, rather than
going into the attic or crawl space.
ADDITIONAL FILTERING ACCESSORIES
External Filter Rack Kit (EFR01)
The external filter rack kit is intended to provide a location
external to the furnace casing, for installation of a perma-
nent filter on upflow model furnaces. The rack is designed to
mount over the indoor blower compartment area of either
side panel, and provide filter retention as well as a location
for attaching return air ductwork.
Return Air
"A"
Min
Electronic Air Cleaner (ASAS and GSAS) or Media
Air Cleaner (AMU and GMU)
The electronic air cleaner and media air cleaner are multi-
positional high efficiency air filtration devices that can be
installed in any position, except with the access door facing
down. The best location for the air cleaner is in the return air
duct next to the blower compartment. Before installing the
air cleaner, consider the application. The electronic air cleaner
must be readily accessible for periodic inspection and clean-
ing of the pre-filters and electronic cells while the media air
cleaner must be readily accessible for periodic inspection
and replacement of the Media Air Cleaner (AMU and GMU)
filter cartridge (3 per carton) M0-1056, M1-1056, M2-1056,
M8-1056, to maintain maximum efficiency and trouble-free
operation. Carbon Filters 1156-3 and 1856-3 (set of 3) are
also available. See Product Catalog for exact filter for your
model.
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