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TOP VIEW
48 (1219)
46-3/4 (1187)
POWER CONNECTION
POINT
Fig. 1. Approximate dimensions of F111U in in. (mm).
PLANNING THE INSTALLATION
The number of F111U air cleaners required is determined by
taking into account the number of occupants and the volume of
the space. Other factors include type of contamination, outdoor
air quality and planned use of the space.
Refer to Table 2 for general guidelines when determining how
many air cleaners are needed.
EXAMPLE: One air cleaner at 900 cfm can provide 10 air
changes per hour in a 12,000 cubic feet (159
cubic meters) area. Table 2 suggests two air
cleaners for a 12,000 cubic feet area. Additional
air cleaners can be required in locations with
increased activity or where contaminant genera-
tion rates are unusually high.
If any questions should arise concerning determining the
number of air cleaners needed for an area, consult your local
Honeywell Commercial Air Cleaner Distributor.
Table 2. Determining the Minimum Number of
Air Cleaners Needed for a Space.
Space Volume
(L x W x H) in Cubic
Feet (Cubic Meter)
5000 to 9000
(140 to 255)
9001 to 16000
(255 to 450)
16001 to 21000
(450 to 600)
21001 to 27000
(600 to 765)
27001 to 30000
(765 to 850)
30001 to 36000
(850 to 1020)
F111U IN-CEILING MEDIA AIR CLEANER WITH ULTRAVIOLET AIR TREATMENT SYSTEM
3/8 X 16
INTERNAL
THREAD (4)
CLEARANCE
FOR LAMP
REMOVAL
19 (483)
4
22-1/2
(102)
(572)
17-1/4
(438)
CEILING
LINE
24 (610)
4-1/2
(114)
M20928
Minimum Number of
Air Cleaners
1
2
3
4
5
6
WARNING
TO REDUCE THE RISK OF FIRE,ELECTRICAL
SHOCK, OR INJURY TO PERSONS,OBSERVE THE
FOLLOWING:
1. Installation Work And Electrical Wiring Must Be Done
By Qualified Person(s) In Accordance With All Applica-
ble Codes And Standard, Including Fire Rated Con-
structions.
2. When Cutting Or Drilling Into The Wall Or Ceiling, Do
Not Damage Electrical Wiring And Other Hidden Utili-
ties.
3. Never Place A Switch Where It Can Be Reached From
A Tub Or Shower.
4. Use This Unit Only In The Manner Intended By The
Manufacturer. If You have Questions, Contact The Man-
ufacturer.
5. Before Servicing Or Cleaning Unit, Switch Power Off At
Service Panel And Lock Service Panel To Prevent
Power From Being Switched on Accidentally.
6. If This Unit Is To Be Installed Over A Tub Or Shower, It
Must Be Marked As appropriate For The Application
and be connected to a GFCI (Ground Fault Circuit Inter-
rupter) - protected branch circuit.
Choosing a Location
Choosing the correct location for the air cleaner affects the
overall performance of the unit. The bidirectional airflow
pattern must flow into the longest reaches of the zone being
cleaned. See Fig. 2
NOTE: The F111U Has Not Been
Investigated For Use In Fire Resistance
Rated Construction.
CLEANING FOOTPRINT
F111U
2
CORRECT
Fig. 2. Correct positioning of the air cleaner
for optimum cleaning.
The air cleaner is designed to be suspended centrally in a
space and mounted into or on a ceiling. The cleaning footprint
of the air cleaner is rectangular with air patterns that move
clean air to the corners of the area while drawing contaminated
air up from the center of the area. See Fig. 2.
When multiple air cleaners are installed, position them so the
areas to be cleaned are equal. Consider that the air throw in
one direction is approximately 50 ft (15m). .
3
1
INCORRECT
CEILING
FLOOR
A12652A
68-0275-2
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