17
SYSTEM OPERATION
Filter Sizing Charts
Model
Minimum Recommended Filter Size
DM92SN0403AN
1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return
DM92SN0603BN
1 - 16 X 25 Side or Bottom Return
DM92SN0803BN
1 - 16 X 25 Side or Bottom Return
DM92SN0804CN
1 - 16 X 25 Side or Bottom Return
DM92SN0805CN
2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return
DM92SN1004CN
1 - 16 X 25 Side or Bottom Return
DM92SN1005CN
2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return1
DM92SN1205DN
2 - 16 X 25 Side or 1 - 24 X 24 Bottom Return1
Filter Sizing Chart
Larger filters may be used, filters may also be centrally located.
1 = use 2 - 16 X 25 filters and two side returns or 20 X 25 filter on
bottom return or combination side & bottom if furnace is
connected to a cooling unit over 4 tons nominal capacity
Model
Minimum Recommended Filter Size
DM96SN0403AN
1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return
DM96SN0603BN
1 - 16 X 25 Side or Bottom Return
DM96SN0803BN
1 - 16 X 25 Side or Bottom Return
DM96SN0804CN
1 - 16 X 25 Side or Bottom Return
DM96SN0805CN
2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return
DM96SN1005CN
2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return1
DM96SN1205DN
2 - 16 X 25 Side or 1 - 24 X 24 Bottom Return1
DC96SN0403BN
2 - 10 X 20 or 1 - 14 X 25 Top Return
DC96SN0603BN
2 - 10 X 20 or 1 - 14 X 25 Top Return
DC96SN0804CN
2 - 14 X 20 or 1 - 16 X 25 Top Return
DC96SN1005CN
2 - 14 X 20 or 1 - 20 X 25 Top Return
DC96SN1205DN
2 - 14 X 20 or 1 - 24 X 24 Top Return
Filter Sizing Chart
Larger filters may be used, filters may also be centrally located.
1 = use 2 - 16 X 25 filters and two side returns or 20 X 25 filter on
bottom return or combination side & bottom if furnace is
connected to a cooling unit over 4 tons nominal capacity
Change filters before occupants
take ownership of a new home!
Consider installing an air cleaner with deep-pleated media
filter at the time of furnace installation. A deep-pleated filter
with a MERV rating of 8 (minimum) will often provide better
filtration to protect equipment and the air distribution system
than a standard 1” filter and often has lower static pressure
loss than a 1” filter. Also a deep-pleated filter will typically
require less frequent replacement intervals. Avoid using
highly restrictive 1” filters which produce static pressure loss
greater than .25” W.C. In some installations the minimum
filter size required (consult filter sizing chart above) will not
lend itself to a filter installation on the side of the furnace.
The installation of a centrally installed air cleaner cabinet or
a return duct filter installation may offer more practicality.
Clean Comfort™ brand MERV 11 air cleaners have
5¼” media filters and are available in the following
configurations. Consult your distributor for information on
our complete line of IAQ Clean Comfort™ products.
Depending on the installation and/or customer preference,
differing 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 figures show possible filter locations:
AIR FLOW
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
Possible Upright Upflow
Figure 13
Figure 14
