Amana GUCA045AX30 Service Instructions Manual page 44

To ensure proper unit performance follow the filter sizes
given in the following filter sizing charts.
Side Return Filters
Minimum Recommended Size For Maximum CFM
Model
Max CFM
Qty
Input___Air Flow
1200 1
045_30
1400
070_30 1
1600 1
070_40
1600 1
090_40
2000 2
090_50
2000 2
115_50
Bottom Return Filter
Minimum Recommended Size For Maximum CFM
Model
Max CFM
Input___Air Flow
1200
045_30
1400
070_30
1600
070_40
1600
090_40
2000
090_50
115_50 2000
Counterflow Filters
Minimum Recommended Size For Maximum CFM
Model
Max CFM Qty
Input___Air Flow
1200
045_30 2
1400
070_30 2
1600 2
070_40
1600 2
090_40
2000 2
090_50
2000 2
115_50
Horizontal Installations
Minimum Recommended Size For Maximum CFM
Model Input___Air
Max CFM
Flow Qty
1200 1
045_30
1400 1
070_30
1600 1
070_40
1600 1
090_40
2000
090_50 1
115_50 2000 1
Upright Installations
Depending on the installation and/or customer preference,
differing filter arrangements can be applied. Filters can be
installed in the central return register, the bottom of the
blower compartment (upflows), a side panel external filter
rack kit (upflows), or the ductwork above a counterflow fur-
nace. As an alternative a media air filter or electronic air
cleaner can be used as the requested filter. Review and
follow the filter sizes given in the previous filter sizing charts
to ensure proper unit performance. The following figures
show possible filter locations.
Note: A ductwork access door must be used in counter-
flow applications to allow filter removal.
44
Rev. 0
PRODUCT DESIGN
Disposable* Permanent*
Nom. Area Nom.
Qty
Size (in²) Size
24x24x1 576 1
16x25x1
25x30x1 750 1
16x25x1
25x30x1 800 1
16x25x1
25x30x1 800 1
16x25x1
20x25x1 1000 2
16x25x1
20x25x1 1000 2
16x25x1
Permanent
Nominal Area
Qty
Size (in²)
1 14x25x1
350
1 14x25x1
350
1 16x25x1
400
1 16x25x1
400
1 20x25x1 500
1 20x25x1 500
Nom. Area Dimension
Filter
Type*
Size (in²)
15X20X1 576
Disposable 14 1/4
15X20X1 750
15X20X1 800
Permanent
15X20X1 800
15X20X1 1000
Permanent 11 1/4
15X20X1 1000
Disposable* Permanent*
Nominal Area Nominal
Qty
Size Size
(in²)
15x20x1 1 15x25x1
600
16x20x1 1 16x25x1
800
16x25x1 1 16x25x1
800
16x25x1 1 16x25x1
800
20x25x1 1000 1 20x25x1
20x25x1 1000 1 20x25x1
CENTRAL
RETURN
GRILLE
Area
(in²)
400
400
400
400
800
800
Possible Upright Upflow
OPTIONAL
FILTER
ACCESS
DOOR
"A"
RETURN
13
DUCT
Area
(in²)
300
4000
400
400
500
500
Possible Upright Counterflow
Horizontal Installations
Filters must be installed in the central return register. Refer
to the previous filter charts for recommended minimum fil-
ter sizes.
Startup Procedure and Adjustment
Furnace must have a 115 VAC power supply properly con-
nected and grounded. Proper polarity must be maintained
for correct operation. Refer to POLARIZATION AND PHAS-
ING section on page 52 of this service manual for the cor-
rect procedures on checking for proper polarization of the
incoming power supply.
SUPPLY
AIRFLOW
EXTERNAL
RACK KIT
FILTER
BOTTOM
RETURN
RETURN
AIRFLOW
Filter Locations
CENTRAL
RETURN
GRILLE
JUNCTION
BOX
SUPPLY
AIRFLOW
Filter Locations
FILTER