Bottom Air Return; Filter Cleaning And Replacing; Counterflow Filters (Gdc) - Amana GUC Series User's Informational Manual

Bottom Air Return

The filter is held in place by a sheet metal retainer strap
(Figure 13). To change and clean the filter, slide one end of
the retainer toward the front and remove filter.
Figure 13
Filter Retainer
GUC, GUX, and GUD
Bottom Return Filter Sizes, Inches
Model Filter Size (Inches)
45
70
90
115

Filter Cleaning and Replacing

Use a vacuum cleaner to clean out the blower area and the
adjacent area of the return air duct.
Wash, rinse, and dry a permanent filter. Both sides of a metal
filter should be sprayed with a dust adhesive as recom-
mended on the adhesive container. Spray adhesives for use
with permanent metal filters can be found at some hardware
stores.
If permanent filters are badly torn or uncleanable, they must
be replaced with permanent filters of the same type and size.
When replacing permanent filter used in side air return ap-
plications, the filter must have dimensions of 16" x 25" x 1".
When replacing permanent filter used in bottom air return
applications use Table 2 or 3 to determine filter size.
Reinstall filter by placing it into the furnace along the side of
the blower. Engage filter in top rail, move toward side of
furnace and drop it into the bottom rail. BE SURE AIRFLOW
DIRECTION ARROW POINTS TOWARDS THE BLOWER.
Type
14 x 25 x 1 Permanent
16 x 25 x 1 Permanent
20 x 25 x 1 Permanent
20 x 25 x 1 Permanent
Table 3

Counterflow Filters (GDC)

This manual discusses the furnace mounted filter rack which
is shipped with the furnace. Other filter arrangements could
have been used.
Counterflow Furnace Mounted Filter Rack
Remember dirty filters are the most common cause of inad-
equate heating or cooling performance.
The furnace-mounted filter rack includes a rack mounted on
the top of the furnace. Two filters fit into the rack and rest
against the sides of the return air plenum, forming a "V"
above the furnace. (Figure 14)
The filters should be inspected and cleaned or changed ev-
ery two months or as required. In some installations, the
filters can be inspected and cleaned or changed after dis-
connecting the electrical power and removing the optional
access door in the return air plenum. If the installation does
not have an access door proceed as follows:
1. Disconnect the electrical power.
2. Remove the upper door from the furnace by turning the
door latches 1/4 turn.
3. Remove the left filter first by reaching to the left side of
the blower, pushing the filter up slightly to remove it from
the filter rack. Then carefully pull the filter down past the
left side of the blower housing. Be careful not to dis-
lodge any trapped dirt or debris from the filter. (Figure
14)
10
Figure 14