Honeywell 11255 - Manual (Page 108)

Flanders - Foremost in Air Filtration
Corporate Headquarters, St. Petersburg, FL 108
Application Considerations
Superflow-VC Adsorbers in HVAC airstreams can
remove many gaseous contaminants thus mitigat-
ing their effects on people and processes. They are
especially useful in controlling common contami-
nants that cause poor indoor air quality (IAQ) in
commercial and industrial buildings such as office
buildings and hospitals.Typical applications and
controlled contaminants are:
Airports SOx and NOx
Blueprint facilities Ammonia
Food processing Amines
Loading docks Diesel fumes
Museums Aldehydes and acid gases
Office buildings VOCs and aldehydes
Research facilities Animal odors
Light duty IAQ applications can usually be handled
by Superflow-VC units selected at 500 fpm (2.54
m/s) face velocity with a 0.030 second residence
time. Medium and heavy duty applications include
airports, engine exhaust, some industrial processes
and situations requiring impregnated carbon. For
these applications, adsorbers should be selected at
greatly reduced face velocities for a longer resi-
dence time.
Residence Time
Residence time is the period, usually a fraction of a
second, that the contaminant molecule is within the
boundaries of the media bed depth and is exposed
to adsorption capture and (for chemisorption)
chemical change. The efficiency of an adsorber is a
function of the bed residence time for a given con-
taminant and set of environmental conditions. The
longer the residence time, the greater the efficien-
cy. Residence time is computed as: (bed area
exposed to airflow x bed depth) airflow rate.
Installation
Superflow-VC Adsorbers are not position sensitive.
Airflow may be through the header side face or the
opposite side face. The cell may be turned so that
the panels are vertical or horizontal. Wherever pos-
sible, adsorbers should be installed with panels ver-
tical and air entering the header side face.
Frames and housings used for 12” (305 mm) deep
particulate filters are well-suited for Superflow-VC
adsorbers. In new construction, built up banks of
Flanders Type 9 Holding Frames and Clips or
Flanders K-Trac Framing Modules holding prefilters
and adsorbers are often chosen where 30 inches
(760 mm) of upstream service access space is
available. Flanders Sureseal Side Access Housings
are most often used for small systems and for sys-
tems where in-line service access space is limited.
Type 9 Holding Frames include gaskets on the
flange against which the adsorber header seals.
For side access housing applications, gaskets are
applied to the side of the adsorber header to
achieve an adsorber-to-adsorber and adsorber-to-
door seals.
Carbon Type and Typical Applications
(Weights are per 24 x 24 adsorber)
TS 201- Virgin coconut shell- VOC (volatile organic
compounds) Carbon weight = 25 lb/11.4 kg
TS 202- Impregnated for control of acid and malodor-
ous gas absorption Carbon weight = 29 lb/13.1 kg
TS 204- Impregnated for control of ammonia and light
organic amines adsorption Carbon weight = 28
lb/12.6 kg
TS 205- Impregnated for control of aldehydes Carbon
weight = 29 lb/13.1 kg
TS 209- Impregnated for universal adsorption of both
acid and alkaline gases and vapors Carbon weight=
32 lb/14.9 kg
Refer to Superflow-VC Drawing for construction
details.
Model Number Development
SFVC TS201 242412
Superflow Carbon Nominal
VC Type Size
SFVC-TS201-242412
Represents a Superflow VC Carbon
Adsorber with Type 201 carbon, nominal 24”
x 24” x 12” (610 mm x 610 mm x 305 mm)
with polyfoam gasket material shipped
loose.
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