Fan Pack II
A Choice of Styles for You to Choose:
• 1,000 to 10,000 cfm collectors for
particulate/gases/bioaerosols
TRUST - we provide the best for you.
Pa r t i a l L i s t i ng o f Appli c a t i ons :
• Metalworking, machining & gr i n d i n g
sm oke & dust
• Welding & soldering fum es
• Vinyl extrusion plastic iz ers
• Rubber c uring & form ing sm oke
• Vac uum pum p exhaust
• Storage warehouse air c leanin g
• Solvent c leaning & gluing fum e s
• Offset print ing powders
• Heat t reat ing sm oke
• Diesel engine exhaust
Flanders/Air Seal at work for you...
Depend on Fan Pack II for the collection of particulate,
gases and bioaerosols. Flanders/Air Seal Fan Pack II’s are
fully self-contained, industrial grade air cleaning systems,
designed for precise control of particulate, gas-phase
and bioaerosol contaminants (or any combination) from
process or ambient air. These units feature a broad range
and combination of filtration components that allow
for exact controls to be selected and packaged to meet
individual applications.
The available components include the finest in medium,
high, and HEPA efficiency filters, UVC Systems and
TechSorb chemical media.
Fan Pack II’s feature integral fans sized to fit the specified
demand and efficiently deliver the required air volume. The unitary designs include a 3” integral base, complete
fan isolation and extruded aluminum filter tracks equipped
with woven pile filter seals. All joints are coated with
silicone compound and all access doors are equipped with
neoprene gaskets and bolt down, knurl-knob latches to
provide the finest seal against ambient air.
Fan Pack II’s can be installed as ducted systems to control
particulate, gas phase and/or bioaerosol contaminants
at the source or without ductwork to remove fugitive
airborne contaminants.
Flanders/Air Seal will help you assess your air pollution
requirements to select the right Fan Pack II configuration
for your specific needs.
Applications
Fan Pack II’s are available in 14 single and multi-stage
filtration component configurations to solve a wide
variety of air pollution problems. They are used to
remove nuisance or hazardous airborne contaminants
from manufacturing processes, laboratory environments,
isolation rooms, and a host of other areas.
Design engineering that is flexible...
Flanders offers an Engineering Department that can
provide realtime solutions. Changes can be made at
any point in the process. The changing world we like in
demands that the manufacturing process be flexible at all
times and be able to respond to the customers requests.
Every job has its hidden information and newly discovered
opportunities. Flanders has an Engineering Department
that is responsive on many levels. The Engineers at the
actual Assembly Shop are supported by a Corporate
Engineering Department that can provide additional
resourses when needed. All 3D Modeling is currently
performed at the Corporate Engineering Department
located in Washington, North Carolina.
General Description
The air cleaner is a unitary industrial type, furnished
as a side access housing, containing stage(s) of
particulate air filter, ultraviolet light system, and/
or gas-phase sorbent media, complete with integral
blower and motor sized to deliver the air volume as
specified.
Construction
Unit housing is constructed from 16 gauge galvanized
steel (optional stainless steel, or aluminum), welded,
with all interior and exterior metal-to-metal joints
sealed with silicone compound, mounted on a painted,
3” base. Optional unit paint coatings are available to
meet the end users needs.
Access doors are fully gasketed on the inside with
high memory neoprene gasketing. Interior of access
doors and cabinet are supplied with gasketing to seal
against the vertical edges of filters. Filter tracks are
fully gasketed and provide positive seal against filter
media to prevent air by-pass.
Blower/Motor
The blower/motor is mounted on a heavy duty,
unitary frame and use rubber-in-shear vibration
isolators and neoprene coated flexible fabric for
blower/motor-to-cabinet connections. The blower
is furnished with fixed sheave and the motor has an
adjustable sheave and drive belt. The blower is either
double width double inlet with forward curved wheel
or backward inclined plenum fan. The motor is an
open drip proof, 3 Phase/ 60 Hz/ 208-230-460VAC,
rated for continuous duty.
General Information
BI/AF and Centrifugal Blowers
Exterior Housing Completely Sealed
All interior and exterior metal-to-metal
connections are sealed with silicone
compound for maximum sealing integrity
All blowers are connected to the unit with neoprene
coated flexible fabric and rubber-in-shear isolators.
Heavy Duty Knurl Knob Latches
Access doors are fitted with bolt-down
knurl-knob latches that assure maximum
sealing integrity.
Fully Gasketed Access Doors
High memory neoprene gasket for
complete door closure and filter sealing.
Extruded Aluminum Filter Tracking
Extruded aluminum tracking, combined
with reinforced woven nylon pile seal
creates corrosion resistant filter seal.
Rugged Construction
All units are factory assembled in a “one
piece” unit constructed of 14 or 16 ga.
galvanized steel with 3” integral base.
Unit shown - Model PBH-1 with 30% prefilter, 95% bag filter,
99.97% HEPA and backward inclined plenum blower/motor.
* Industrial exhaust unit depicted above; clean air supply and similar applications should utilize Fan Pack III and Fan Pack IV.
Notes
1. Fan Pack II’s are shipped with filters as specified per the purchase order.
2. Pleats, bags and collectors are shipped installed in the Fan Pack II housing. HEPA filters and carbon panels are
shipped individually packaged.
3. Refer to applicable unit submittal drawing for complete actual dimensions
4. Special blower/motor combinations are available.
Flanders/Air Seal offers multiple options to meet your projects
requirements. These include but are not limited to:
1. Fans
a. Plenum
b. Centrifugal DWDI i. Backward inclined
a. Steel
ii. Airfoil
2. Low leak dampers and louvers
b. Stainless steel
3. Casing material selection:
a. Epoxy painted galvanized steel b. 304 or 316 stainless steel
(standard)
c. Aluminum
4. Insulation:
a. Fiberglass 1” to 4” 3 lb. density
i. Foil back
ii. Mastic coated
b. Armaflex 1” and 2”
c. Foam board ½” to 4”
5. Specialized latches:
a. Positive pressure trip-lock
b. Cam lock latch
latch
a. 3” Hinge (standard)
removed easily in tight locations
a. Air dry epoxy in a variety of colors
b. Air dry polyurethane in a variety of colors
c. Heresite Coating
8. Pressure gages mounted flush, external,
b. Uni-Hinge – allows door to be
c. Piano hinges
7. Paint coatings
c. Ventlok latch
6. Specialized stainless steel hinges:
or swung open in normal locations
or remote
a. Magnehelic
b. Photohelic
c. Manometer
d. Minihelic
e. Capsuhelic
9. Weatherproofing
Fan Pack II
3
Fan Pack II Selection Guide
Model “P” / Single-Stage
Model “PC” / 2-Stage
30% prefilter
30% prefilter - activated carbon
Model
CFM
ISP
Size
Height
Width
Depth
HP
Model
CFM
ISP
Size
Height
Width
Depth
P-1
1,000
1.0”
1x1
26.25”
24.00”
34.00”
1
PC-1
1,000
1.25”
1x1
26.25”
24.00”
68.00”
1
P-2
2,000
1.0”
1x1
26.25”
24.00”
34.00”
2
PC-2
2,000
1.25”
1x1
26.25”
24.00”
68.00”
1.5
P-3
3,000
1.0”
1x1-1/2
26.25”
36.00”
42.00”
3
PC-3
3,000
1.25”
1x1-1/2
26.25”
36.00”
73.00”
3
P-4
4,000
1.0”
1x2
26.25”
48.00”
40.00”
3
PC-4
4,000
1.25”
1x2
26.25”
48.00”
78.00”
3
P-6
6,000
1.0”
1-1/2x2
38.50”
48.00”
46.00”
5
PC-6
6,000
1.25”
1-1/2x2
38.50”
48.00”
82.00”
5
P-8
8,000
1.0”
2x2
50.50”
48.00”
54.00”
5
PC-8
8,000
1.25”
2x2
50.50”
48.00”
82.00”
7.5
P-10
10,000
1.0”
2x2-1/2
50.50”
59.00”
58.00”
5
PC-10
10,000
1.25”
2x2-1/2
50.50”
59.00”
85.00”
7.5
Model “PR” / 2-Stage
HP
Model “PRC” / 3-Stage
30% prefilter - 95% rigid filter
30% prefilter - 95% rigid filter- activated carbon
Model
CFM
ISP
Size
Height
Width
Depth
HP
Model
CFM
ISP
Size
Height
Width
Depth
HP
PR-1
1,000
1.8”
1x1
26.25”
24.00”
50.00”
1
PRC-1
1,000
2.1”
1x1
26.25”
24.00”
80.00”
1
PR-2
2,000
1.8”
1x1
26.25”
24.00”
54.00”
3
PRC-2
2,000
2.1”
1x1
26.25”
24.00”
82.00”
3
3
PRC-3
3,000
2.1”
1x1-1/2
26.25”
36.00”
83.00”
5
PR-3
3,000
1.8”
1x1-1/2
26.25”
36.00”
56.00”
PR-4
4,000
PR-6
6,000
1.8”
1x2
26.25”
48.00”
56.00”
5
PRC-4
4,000
2.1”
1x2
26.25”
48.00”
85.00”
5
1.8”
1-1/2x2
38.50”
48.00”
62.00”
7.5
PRC-6
6,000
2.1”
1-1/2x2
38.50”
48.00”
92.00”
10
PR-8
8,000
PR-10
10,000
1.8”
2x2
50.50”
48.00”
68.00”
7.5
PRC-8
8,000
2.1”
2x2
50.50”
48.00”
96.00”
10
1.8”
2x2-1/2
50.50”
59.00”
68.00”
7.5
PRC-10
10,000
2.1”
2x2-1/2
50.50”
59.00”
100.00”
10
Model “PBC” / 3-Stage
Model “PB” / 2-Stage
30% prefilter - 95% bag filter - activated carbon
30% prefilter - 95% bag filter
Model
CFM
ISP
Size
Height
Width
Depth
HP
Model
CFM
ISP
Size
Height
Width
Depth
HP
PB-1
1,000
1.8”
1x1
26.25”
24.00”
64.00”
1
PBC-1
1,000
2.1”
1x1
26.25”
24.00”
94.00”
1
PB-2
2,000
1.8”
1x1
26.25”
24.00”
68.00”
3
PBC-2
2,000
2.1”
1x1
26.25”
24.00”
98.00”
3
3
PBC-3
3,000
2.1”
1x1-1/2
26.25”
36.00”
98.00”
5
PB-3
3,000
1.8”
1x1-1/2
26.25”
36.00”
70.00”
PB-4
4,000
PB-6
6,000
1.8”
1x2
26.25”
48.00”
70.00”
5
PBC-4
4,000
2.1”
1x2
26.25”
48.00”
98.00”
5
1.8”
1-1/2x2
38.50”
48.00”
76.00”
7.5
PBC-6
6,000
2.1”
1-1/2x2
38.50”
48.00”
107.00”
10
PB-8
8,000
PB-10
10,000
1.8”
2x2
50.50”
48.00”
82.00”
7.5
PBC-8
8,000
2.1”
2x2
50.50”
48.00”
112.00”
10
1.8”
2x2-1/2
50.50”
59.00”
88.00”
7.5
PBC-10
10,000
2.1”
2x2-1/2
50.50”
59.00”
116.00
10
4 Fan Pack II
Note: Refer to a Flanders catalog to select your filters.
Fan Pack II Selection Guide
Model “PH” / 2-Stage
Model “PHC” / 3-Stage
30% prefilter - 99.97 HEPA
30% prefilter - 99.97% HEPA - activated carbon
Model
CFM
ISP
Size
Height
Width
Depth
HP
Model
CFM
ISP
Size
Height
Width
Depth
HP
PH-1
1,000
2.5”
1x1
26.50”
30.00”
70.00”
1
PHC-1
1,000
2.75”
1x1
26.50”
30.00”
102.00”
1
2,000
2.75”
1x1
26.50”
30.00”
102.00”
2
PH-2
2,000
2.5”
1x1
26.50”
30.00”
70.00”
1.5
PHC-2
PH-3
3,000
2.5”
1x1-1/2
26.50”
39.00”
64.00”
3
PHC-3
3,000
2.75”
1x1-1/2
26.50”
39.00”
107.00”
3
PH-4
4,000
2.5”
1x2
32.00”
51.00”
70.00”
3
PHC-4
4,000
2.75”
1x2
29.00”
51.00”
100.00”
5
PH-5
6,000
2.5”
1-1/2x2
39.00”
51.00”
75.00”
5
PHC-6
6,000
2.75”
1-1/2x2
39.00”
51.00”
123.00”
7.5
PH-8
8,000
2.5”
2x2
51.00”
51.00”
87.00”
7.5
PHC-8
8,000
2.75”
2x2
51.00”
51.00”
124.00”
7.5
7.5
PHC-10
10,000
2.75”
2x2-1/2
51.00”
64.00”
112.00”
10
PH-10
10,000
2.5”
2x2-1/2
51.00”
64.00”
82.00”
Model “PRH” / 3-Stage
Model “PBH” / 3-Stage
30% prefilter - 95% rigid filter - 99.97% HEPA
30% prefilter - 95% bag filter - 99.97% HEPA
Model
CFM
ISP
Size
Height
Width
Depth
HP
Model
CFM
ISP
Size
Height
Width
Depth
HP
PRH-1
1,000
3.1”
1x1
26.50”
30.00”
93.00”
1
PBH-1
1,000
3.1”
1x1
26.50”
30.00”
101.00”
1
PRH-2
2,000
3.1”
1x1
26.50”
30.00”
93.00”
2
PBH-2
2,000
3.1”
1x1
26.50”
30.00”
101.00”
2
PRH-3
3,000
3.1”
1x1-1/2
26.50”
39.00”
98.00”
3
PBH-3
3,000
3.1”
1x1-1/2
26.50”
39.00”
106.00”
3
PRH-4
4,000
3.1”
1x2
29.00”
51.00”
92.00”
5
PBH-4
4,000
3.1”
1x2
29.00”
51.00”
100.00”
5
PRH-5
6,000
3.1”
1-1/2x2
39.00”
51.00”
105.00”
7.5
PBH-6
6,000
3.1”
1-1/2x2
39.00”
51.00”
113.00”
7.5
PRH-8
8,000
3.1”
2x2
51.00”
51.00”
113.00”
7.5
PBH-8
8,000
3.1”
2x2
51.00”
51.00”
121.00”
7.5
PRH-10
10,000
3.1”
2x2-1/2
51.00”
64.00”
118.00”
10
PBH-10
10,000
3.1”
2x2-1/2
51.00”
64.00”
126.00”
10
Model “PRR” / 3-Stage
Model “V” / 2-Stage
30% prefilter - 65% rigid filter - 95% rigid filter
30% Vee bank filter
Model
CFM
ISP
Size
Height
Width
Depth
HP
Model
CFM
ISP
Size
Height
Width
Depth
HP
PC-1
1,000
1.25”
1x1
26.25”
30.00”
84.00”
1
V-1
1,000
1.0”
1x1
26.25”
24.00”
58.00”
1
PC-2
2,000
1.25”
1x1
26.25”
30.00”
84.00”
2
V-2
2,000
1.0”
1x1
26.25”
24.00”
60.00”
2
PC-3
3,000
1.25”
1x1-1/2
28.00”
36.00”
87.00”
3
V-3
3,000
1.0”
1x1-1/2
26.25”
36.00”
64.00”
3
PC-4
4,000
1.25”
1x2
32.00”
48.00”
89.00”
5
V-4
4,000
1.0”
1x2
26.25”
48.00”
64.00”
3
PC-5
6,000
1.25”
1-1/2x2
38.50”
48.00”
102.00”
5
V-6
6,000
1.0”
1-1/2x2
38.50”
48.00”
74.00”
5
PC-8
8,000
1.25”
2x2
50.50”
48.00”
204.00”
7.5
V-8
8,000
1.0”
2x2
50.50”
48.00”
76.00”
5
PC-10
10,000
1.25”
2x2-1/2
50.50”
59.00”
108.00”
7.5
V-10
10,000
1.0”
2x2-1/2
50.50”
59.00”
80.00”
5
Note: Refer to a Flanders catalog to select your filters.
Fan Pack II
5
Fan Pack II Suggested Specification
General:
Factory fabricated blow-through and draw-through
packaged filtration units.
Unit casing
Exterior casing shall be constructed of minimum 16gauge galvanized steel. Exterior panels shall be turned
inward to provide a clean flush exterior finish. The unit
shall be caulked with silicon sealant to produce an air
tight seal.
Insulation (optional)
Interior insulation shall be a minimum of 1” thick 1-1/2
pound per cubic foot density fiberglass duct board
with foil backing. All edges shall be taped to insure no
insulation is in the air stream with 3” foil tape. Insulation
shall comply with NFPA 90a. The fiberglass shall be
glued and fastened to the cabinet wall with stick clips. Other options available upon request.
Unit base
Continuously seam welded structural steel channel
reinforced to support all internal components on a
common channel frame. Units less than or equal to 12’
long, the base shall be constructed of 3” coated channel
iron. Units less than 20’ but greater than 12’ long, the
base shall be constructed of 4” coated channel iron. All
units over 20’, the base shall be constructed of 6” coated
channel iron. Provide lifting lugs approximately every
12’, minimum (4) per unit.
Access doors
Access doors shall provide service to all internal
components. Access doors for insulated units to be
double wall insulated with 1” thick 1-1/2 pound per
cubic foot density fiberglass complying with NFPA 90a. Outer wall to be 16gauge galvanized steel. Inner wall
to be minimum 20-gauge galvanized steel. Doors shall
swing freely on stainless steel hinges. Door latches
shall be positive pressure snap action bassick latches on
all units with total static pressure of 2-1/2” w.c. Door
perimeter gasket shall be continuous neoprene gasket. Note: all units greater than two filters wide shall have
doors on both sides of unit.
after machining. Units larger than 1,000 cfm. Blower
shall be complete with pillow block bearings, angle iron
frame around perimeter of blower housing, and shall
be equipped with zerk fittings for future lubrication. Lubrication lines shall be extended to exterior of unit
to permit lubrication for both bearings from access
door side of unit. All blowers shall be flex connected to
housing by means of flexible fabric. Motor assembly shall
be mounted on an integral all welded epoxy coated fanmotor base constructed of no less than 1 ½” angle iron. Fan base to be isolated to housing be means of rubber-inshear isolators when size permits, 1” deflection seismic
spring isolators when size dictates.
Backward inclined double width, double inlet blower
shall be sized for 130% of initial static pressure plus
external static duct loss. All fans shall be tested in
accordance with AMCA 210-70 test code for air moving
devices. Fan shaft shall be solid (hollow shafts are not
acceptable) shaft shall be ground and polished carbon
steel SAE 1045 material or equal. Machined to close
tolerances, keyed to fan wheel. Fan shall be coated
with a rust inhibitor after machining. Blower shall
be complete with pillow block bearings, angle iron
frame around perimeter of blower housing, and shall
be equipped with zerk fittings for future lubrication. Lubrication lines shall be extended to exterior of unit
to permit lubrication for both bearings from access
door side of unit. All blowers shall be flex connected
to housing by means of flexible fabric. Motor assembly
shall be mounted on an integral all welded epoxy coated
fan-motor base constructed of no less than 1 ½” angle
iron. Fan base to be isolated from housing by means of
rubber-in-shear isolators when size permits, or 1” / 2”
deflection seismic spring isolators. Vibration isolators
Fan and motor shall be mounted on all welded, structural
steel, unitary, epoxy coated, integral fan/motor base with
isolators selected to provide 96% isolation efficiency
from the unit structure. Rubber-in-shear elastomeric
mounting having a steel base plate with mounting
holes and a threaded insert at top of the mounting for
attaching fan base. All metal parts shall be completely
embedded in the elastomeric material. Mountings shall
be designed for approximately ½” deflection. Spring
Fans
Forward curved double width, double inlet blower shall isolators shall be designed to resist seismic forces in all
be sized for 130% of initial static pressure plus external directions and shall be constructed of welded steel with
static duct loss. All fans shall be tested in accordance neoprene cushioned contact surfaces. These restraints
with AMCA 210-85 test code for air moving devices. Fan will reduce shock during an earthquake and not engage
shaft shall be solid (hollow shafts are not acceptable) during normal operation. Springs shall be adjustable for
shaft shall be ground and polished carbon steel SAE 1045 leveling and shall be furnished with a neoprene sound
material or equal, machined to close tolerances, keyed absorbing pad for high frequency isolation. Springs
to fan wheel. Fan shall be coated with a rust inhibitor shall be approved for zone 4 applications. Compressed
6 Fan Pack II
Fan Pack II Suggested Specification
operating height to spring diameter ratio is 1 to 1. Spring
deflection shall be 1-1/2” minimum.
Note: all units less than or equal to 8000 cfm shall have
rubber-in-shear isolators.
Note: all units greater than 8000 cfm shall have spring
isolators.
dampers shall be of the same high quality. All dampers
shall rotate in nylon rustproof type bushings and have a
linear type operation. All dampers are factory installed
opposed blade.
Minimum outside air damper:
The integral air monitor/damper shall have measuring
ports built into the damper blades and shall control the
minimum amount of outside air as recommended by
Motors
ASHRAE standard 62. The air /monitor damper shall
Motor shall be minimum size indicated in the project have an Aluminum frame. The frame shall be designed
drawing schedule or large enough so that the motor will for 4 bolt and/or flange cleat installation and shall
not be required to operate in the service factor. Several provide maximum free area for lowest pressure drop
enclosures are available: (ODP) open drip proof - where performance. Damper blades shall be heavy gauge
motors are located inside of housing or in a safe area. aluminum airfoil type. Damper linkage shall be out of
(TEFC) totally enclosed fan cooled - where motors are the air stream and located within the damper frame to
located outside of unit not in safe area (TEFC-HI-EFF) reduce pressure drop and noise. Jamb seals shall be
totally enclosed fan cooled - high efficiency where flexible metal compression type. The assembly on the
motors are to be used in conjunction with variable damper/monitor shall incorporate an air straightener
frequency drives (subject to VFD manufacturer vane to ensure proper airflow readings.
approval). (X-proof) explosion proof where motors are
to be located in a hazardous areas (motor to be able Each air monitor /damper shall include 24VAC electric
to withstand an explosion from with-in, and prevent modulating motor and an application specific controller
ignition in the surrounding environment.). Motors designed for this for this application furnished by the
shall operate at 60hz. And have a service factor of 1.15 damper manufacture. Each integral air monitor/damper
For single and three phase motors. Motors shall be shall be calibrated in an AMCA registered laboratory and
constructed to NEMA standard MG 1, general purpose, a certification chart shall accompany it. continuous duty, design B. Motor bearings shall be either
roller or ball bearings with inner and outer shaft seals. Finish (optional)
Motors shall be resistant to thrust loading where belt Unit shall be undercoated inside and out prior to
drives or other drives produce axial or lateral thrust in insulating with a minimum of 2 mls. Thick of uni-primer. motor. Fan/motor combination shall come up to speed Final coat shall be a minimum of 2 mls. Thick of two part
in 10 seconds or less.
air dried epoxy.
Drives
Weatherproofing (optional)
Filte tracking
Electrical (optional)
Fan / blower drive shall be v-belt fixed hitch. Motor Suitable for outdoor installation, weatherproof design.
sheaves shall be variable pitch up to and equal to 5 hp. All outdoor units shall have a sloped (pitched) roof rain
Motors 7.5 hp and larger shall have fixed hitch sheaves. guards over each door.
The Fan Pack II unit accommodates a variety of filters. Filter tracking depends on the filter selection. Pre filter
shall be a minimum of 2” thick. Filter installation is
side access slide in. On all units requiring a vee bank
arrangement in the pre filter section, a formed 20 ga.
galvanized track is used. Extruded aluminum track
shall be used on all other filter combinations. Extruded
aluminum track shall have a woven pile seal mechanically
fastened to the downstream side of each track.
Dampers (optional)
Mixing damper section: the outside air dampers shall
be the high efficiency, low leak, high quality type with
neoprene blade seals and edge seals. The return air
Variable frequency drive wired to motor with flexible
conduit.
Gages (optional)
Photohelic –mounted, not wired
Magnehelic -mounted
Other gages are available upon request
Options
Customer specified options and deviations from this
standard specification are part of the design and
submittal process. The customer’s requirements and
needs can be incorporated into this specification to
make the units conform to the specific application.
Fan Pack II
7
PB4002-0110
Representatives of Flanders Corporation are located
throughout the world.
Your closest representative’s office may be found by
contacting our manufacturing and sales department.
Distributed By:
Company Headquarters:
531 Flanders Filters Road
Washington, NC 27889
United States
+1.800.637.2803
flanderscorp.com