F25F
Media Air Cleaner
PRODUCT DATA
FEATURES
• High efficiency media filter captures particles as small
as 1.0 micron.
• Efficiency and arrestance ratings based on the
American Society of Heating, Refrigerating and Air
Conditioning Engineers Standard 52-76.
• Applicable to all gas, oil, and electric forced warm air
furnaces and to compressor cooling up to 3-1/2 tons.
Can be used with heat pumps only if the filter is
changed regularly to prevent excessive pressure drop.
Not recommended for applications where pressure
drop may be critical.
• Mounts in the return air duct.
• Cabinet can support weight of residential furnace and
evaporator coil.
APPLICATION
The F25 Media Air Cleaner captures a significant amount of
the air-borne particles from the air circulated through the unit.
• Requires no electrical connections.
• Mounts in any position.
• Requires no maintenance except periodic media filter
replacement.
• Media filter is easily replaced by homeowner.
• Later upgrade to F50 Electronic Air Cleaner is easy.
Contents
Application........................................................................... 1
Features .............................................................................. 1
Specifications ...................................................................... 2
Ordering Information ........................................................... 2
Planning the Installation ...................................................... 4
Installation and Checkout .................................................... 7
Future Option ...................................................................... 8
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
F25F MEDIA AIR CLEANER
SPECIFICATIONS
IMPORTANT
The specifications in this publication do not include
normal manufacturing tolerances; therefore, an
individual unit may not exactly match the listed
specifications. This product is tested and calibrated
under closely controlled conditions, and some minor
differences in performance can be expected if those
conditions are changed.
Model:
F25 Media Air Cleaner includes cabinet, access door and
pleated media filter.
Application:
Use with gas, oil, and electric forced warm air furnaces and
with compressor cooling. Can be used with heat pumps if
filter is changed regularly to prevent excessive pressure drop.
Not recommended for applications where pressure drop may
be critical.
Arrestance Efficiency:
Efficiency ratings are based on National Bureau of
Standards Dust Spot Method using atmospheric dust
and American Society of Heating, Refrigerating and AirConditioning Engineers Standard 52-76.
Initial Efficiency: 10 percent (staining dirt removal).
Average Efficiency: 18 percent (staining dirt removal).
Average Arrestance: 90 percent (bulb dirt removal).
Filter Media:
Nonwoven, reinforced cotton and synthetic fabric, pleated for
greater media area. See Table 1.
Capacity And Pressure Drop:
See Table 1.
Temperature Rating:
-40° to +125°F (-40° to +52°C).
Dimensions:
See Fig. 1.
Mounting:
Mounts in any position in the return air duct next to the
furnace blower compartment. Air flow must be in the direction
of the arrow on the filter cartridge. Cabinet is sturdy enough to
support weight of a residential furnace and evaporator coil.
Underwriters Laboratories, Inc.:
Listed to UL 900, Class 2.
The F25F removes particles as small as one micron. See
Fig. 1 for size ranges of common household particles.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Logistics
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
68-0138—2
2
F25F MEDIA AIR CLEANER
Upgrade Path:
The F25 uses the same cabinet as the F50 Electronic Air
Cleaner. Upgrade requires installing the cell key, electronic
cells, protective screens and installation and wiring of the
power box.
Accessory:
S830A Clogged Filter Indicator.
Replacement Media:
Replace media filter annually or more often if reduced air flow
results in lower heating/cooling equipment performance.
Nominal Size (in.) Part Number
12.5 x 20 203722
16 x 25 203719
20 x 25 203720
20 x 20 203721
Table 1. Capacity, Pressure Drop and Area of
F25 Filter Media.
F25 FILTER PRESSURE DROP
0.30
a
0.25
0.20
0.15
0.10
0.05
PRESSURE DROP (IN. WC)
0.00
SIZE
12.5 X 20
16 X 25
20 X 25
20 X 20
a
When first installed. Pressure drop increases as filter
0
b
-------
-------
-------
-------
ABOVE IS WHEN FIRST INSTALLED. PRESSURE DROP INCREASES
AS FILTER BECOMES LOADED.
437.5 875 1312.5
AIRFLOW (CFM)
218
350
438
350
438
700
875
700
c
656
1050
1313
1050
1750
875
1400
1750
1400
M5638
becomes loaded. Filter should be replaced when pressure
drop reaches 0.5 in. w.c. (0.1 kPa).
b
Available in United States only.
c
Maximum capacity based on 500 FPM face velocity.
6
(171)
1
(29)
1
8
DIM. A
(SEE TABLE)
(22)
7
5
8
8
(16)
DIM. C (SEE TABLE)
DIM. D (SEE TABLE)
3
4
DIM. B
(SEE TABLE)
7
8
(22)
F25 SIZE
IN.
16 X 25
16 X 20
20 X 25
20 X 20
20 X 12 1/2
MM
406 X 635
406 X 508
508 X 635
508 X 508
508 X 318
DIM. A
IN. MM IN. MM
14 7/16
14 7/16
18 7/16
18 7/16
18 7/16
367
367
468
468
468
DIM. B
16 3/16
16 3/16
20 3/16
20 3/16
20 3/16
411
411
513
513
513
DIM. C
IN. MM IN. MM
23 1/4
18 1/4
23 1/4
18 1/4
10 7/8
Fig. 1. Installation dimensions in in. (mm) of air cleaner.
3
591
457
591
457
276
25 1/2
20 1/2
25 1/2
20 1/2
13 1/8
DIM. D
648
521
648
521
333
M5641A
68-0138—2