Honeywell F118 Product Data Download Page 8

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F118 IN-CEILING MEDIA AIR CLEANER

68-0209-2 Revised 11-07

OPERATION

Local, Federal and professional ventilation engineering
standards and codes prescribe minimum ventilation rates to
dilute air contamination in specific applications. The
ventilation rates usually assume the injection of outdoor air
measured as air exchange rate.

Using the F118 Air Cleaner to comply with ventilation
requirements is an acceptable alternative to ventilation with
outdoor air. However, at least 20 percent of a specified
ventilation code rate must be derived from outdoor air. The
F118 Air Cleaner filtered and re-circulated air can supply the
remaining 80 percent.

Airborne contaminants are always present in the air where
contaminant generation occurs. Air cleaning systems and
ventilators do not eliminate airborne contaminants; they
reduce excessive contaminant accumulation. To eliminate the
contamination, the source of contamination must be removed.

The F118 in Ceiling Media Air Cleaner was engineered to
improve indoor air quality for commercial and industrial
applications. The filters are effective for capturing atmospheric
dust, mold spores, smoke, fumes, mists and aerosols. See
Fig. 9.

Fig. 9. F118 Air Cleaner operation.

The air cleaner may be operated on high, medium, or low
speed, depending on the number of people and activities in
the space.

The unit may be used only while people are using the room, or
when contaminants from other sources must be removed from
the room. And the air cleaner may be operated continuously
to prevent buildup of airborne contaminants, even when the
room is unoccupied.

The CPZ™ sorbent module collects and holds gas-phase
compounds and vapors typically found in commercial and light
industrial facilities. These gases and vapors frequently appear
as odors that can be annoying and irritating. CPZ™ material
extends the maintenance service life.

The minimum recommended air exchange rate is 2.5 times
per hour. In a heavily contaminated area, up to 15 air
exchanges per hour can be necessary. The factors that
determine the rate of air exchange are:
•

Generation rates of the various pollutants;

•

Concentration level of the pollutants;

•

Desired contamination reduction level.

SERVICE

WARNING

Fire or Electric Shock Hazard.
Can cause personal injury or equipment damage.

Turn off power source before servicing air cleaner.

IMPORTANT

A very dirty filter reduces air cleaner airflow.

Opening/Closing Grille

IMPORTANT

Use this procedure when opening the grille to pre-
vent damage to the cover and prevent ceiling buck-
ling.

To open the grille and remove and replace the filters:

Pull apart the spring-loaded plungers to disengage from
the grille.

Turn the plungers to keep them from closing and reen-
gaging the grille.

Slide the grille forward toward you. It can travel about
one inch.

Slowly and carefully allow the grille to swing down.

To close the grille:

Swing grille into the closed position.

Engage the plungers.

Particle Filter

The particle filter collects particles that are not trapped by the
pre-filter. The particle filter life is from 6 to 24 months (typically
12 to 24 months). Change modules and filters more frequently
in facilities that operate 24 hours a day. When the filter is
loaded with contaminants, there is a pulsing sound, and
decreasing air quality. Replace the filter when the pulsing
sound becomes audible.

IMPORTANT

The filter must be removed and replaced. Washing,
vacuuming or reverse air blasting does not clean it.

CAUTION

Equipment Damage Hazard.
Handling can damage the filter media.

Handle only the filter frame.
Do not touch the pleated filter media.

Push aside the two spring-loaded support rods that hold
the filter frame in place.

Rotate the rods; the filter is released and can be
removed.

With both hands, slide the filter toward you.

Place the removed filter in a plastic trash bag and dis-
pose of properly.

Unwrap and install a new filter.

DROP
CEILING
LINE

PREFILTER
(WRAPS AROUND
PARTICLE FILTER)