46
FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN
AIR DUCT WORK
Filters must be used with this furnace. Discuss filter maintenance
with the building owner. Filters do not ship with this furnace, but
must be provided, sized and installed externally by the installer.
Filters must comply with UL900 or CAN/ULCS111 standards. If
the furnace is installed without filters, the warranty will be voided.
On upflow units, guide dimples locate the side return cutout loca-
tions. Use a straight edge to scribe lines connecting the dimples.
Cut out the opening on these lines. NOTE: An undersized open-
ing will cause reduced airflow.
Refer to Minimum Filter Area tables to determine filter area re-
quirements.
600 800 1000 1200 1400 1600 2000
0603__XA --- --- 627* 627* 672 768 ---
0805__XA --- --- --- 836* 836* 836* 960
1005__XA
1155__XA
--- --- --- 940* 940* 940* 960
600 800 1000 1200 1400 1600 2000
0604__XA --- --- 320* 320* 336 384 ---
0805__XA
1005__XA
--- --- --- 427* 427* 427* 480
Input
Airflow
UPFLOW
COOLING AIRFLOW REQUIREMENT (CFM)
COUNTERFLOW
COOLING AIRFLOW REQUIREMENT (CFM)
Input
Airflow
*Minimum filter area dictated by heating airflow requirement.
Permanent Minimum Filter Area (sq. in)
[Based on a 600 ft/min filter face velocity]
600 800 1000 1200 1400 1600 2000
0603__XA --- --- 564* 564* 672 768
0805__XA --- --- --- 752* 752* 768 960
1005__XA
1155__XA
--- --- --- 940* 940* 940* 960
600 800 1000 1200 1400 1600 2000
0604__XA --- --- 641* 641* 672 768 ---
0805__XA
1005__XA
--- --- --- 854* 854* 854* 960
Input
Airflow
UPFLOW
COOLING AIRFLOW REQUIREMENT (CFM)
COUNTERFLOW
COOLING AIRFLOW REQUIREMENT (CFM)
Input
Airflow
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter area (sq. in)
[Based on 300 ft/min filter face velocity]
UPRIGHT I NSTALLATIONS
Depending on the installation and/or customer preference, differ-
ing filter arrangements can be applied. Filters can be installed in
the central return register or a side panel external filter rack kit
(upflows). As an alternative a media air filter or electronic air
cleaner can be used as the requested filter.
The following figure shows possible filter locations.
FILTER
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
Possible Upright Upflow
FILT
ER
AIR FLOW
CENTRAL
RETURN
GRILLE
RETURN
DUCT
F
I
L
T
E
R
FILTER
SUPPORT
BRACKET
(Field Supplied)
FILTER
ACCESS
DOOR
Possible Upright Counterflow
Filter Locations
OPERATION
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