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PurePac
Electronic Air Purification System
PB1900-0604
General
The Flanders-Precisionaire PurePac Electronic Air
Purification System is designed for reliable, high efficiency air filtration required in today's commercial
building environments. It is available in both side
access housings and front access units, for use with
air handlers and central ventilation systems.
PurePac is a new generation electronic air purifier,
incorporating highly dependable high frequency electronics that deliver the specified efficiency instantly
and continuously . The extremely low resistance to airflow means less fan horsepower is needed, compared
to conventional media filters, and because the resistance is constant, the system air volume is always
maintained. Permanent aluminum collectors, built-in
automatic cleaning and a low 35 watts per 1,000 cfm
energy usage, result in a substantially lower life cycle
cost, compared to conventional air filtration systems.
High performance and low operating cost make Pure
Pac an excellent choice for HVAC system
filtration.Optional TechSorb High Mass Zero Dust
bonded activated carbon is available for gas
phase/odor control, making PurePac the IDEAL
SOLUTION for quality indoor air.
Configuration
PurePac Side Access units are available in sizes
ranging from 3,000 to 30,000 cfm. Housings are 16
gauge galvanealed steel, continuously welded,
primed and painted. Pre and post mist eliminators,
electronic collectors and built-in cleaning system are
factory assembled into the housing. PLC control and
detergent dispenser are supplied as separate components.
PurePac front access units are available in sizes ranging from 12,000 to unlimited cfm. Pre and post mist
eliminators, electronic collector modules, built-in
cleaning system, Unistrut‚ framing, PLC control and
detergent dispenser are furnished as built-up subassemblies
Front Access
Key Features
• Reliable high frequency electronics do not use fragile ionizing wires or insulators
• Specified ASHRAE 52.1-92 efficiency is instant and constant
• Resistance to airflow is a low 0.25î w.g., resulting in
reduced fan horsepower
• Constant resistance to airflow prevents fluctuations in system air volume
• Permanent aluminum collector modules never need
replacing
• Built-in automatic cleaning and PLC controls
• Optional TechSorb bonded carbon for gas/odor control
• Available in side access housings or front access units
• Rugged design lasts the life of a HVAC system
• Interfaces with Building Management System
Side Access
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
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Today's IAQ Challenges
The effort to increase performance and efficiency of
buildings has resulted in tighter construction and
reduced air infiltration. Airborne particulate and gas
phase contaminants released from paint, carpeting,
wallpaper, insulation, copy machines, and cleaning
agents become trapped in the work environment.
Atypical ventilation system recirculates 80-90% of the
total air volume in the building, and introduces 10-20%
outside (make-up) air to the recirculated air, in order to
dilute the airborne contaminants and reduce staleness. However, make-up air often introduces new
pollutants to the building, such as diesel and gasoline
engine exhaust, mold, pollen, dust, offensive odors
and other common outdoor pollutants.
The key to providing healthy indoor air is reducing the
levels of airborne particulate and gas phase contaminants. A successful ventilation system reduces the
levels of contaminants through high efficiency filtration
and gas phase control, while at the same time, reducing maintenance, upkeep, and operating costs.
Filtration System Considerations
PurePac's particle collection efficiency is continuous
and not highly dependent on particle size or filter loading, therefore actual efficiencies of 90-95% and higher can be achieved at an economical operating cost.
PurePac is available with optional TechSorb HMZD
impregnated bonded carbon panels for gas phase
contaminant and odor control. The rigid panels eliminate air by-pass, channeling and settling, which are
typical with conventional loose granular carbon filters.
The disposable HMZD panels also offer clean, easy,
removal and replacement.
The operating cost to move ventilation air through a filtration system is directly related to the filter is resistance. PurePac's low and constant 0.25î w.g. resistance results in reduced fan horsepower and a significant energy savings compared to conventional filtration. Since PurePac's efficiency is instant and continuous, fouling of heating and cooling coils is reduced,
resulting in higher performance and reduced operating cost of the system.
PurePac incorporates a permanent self-cleaning system, eliminating the replacement and labor cost of
buying, changing, and disposing of filters. Alife cycle
cost analysis almost always shows that PurePac's
performance and reliability can be justified.
Today’s Solution
PurePac is designed to work in conjunction with a
building’s air handling units and ventilation systems,
delivering the specified level of efficiency, continuously and reliably.
High reliability , optimum performance, and low operating cost make PurePac the IDEAL SOLUTION for
today’s indoor air quality challenges.
Performance
PurePac uses a 2-stage electronic collector for particulate control. A high-density, low power first stage
charges each particle. The charged particles then
travel downstream into the second stage where they
are repelled from the air stream, captured, and
retained on collector plates.
The electronic collector uses an airfoil design that
eliminates air-bypass, so all of the HVAC system air
and airborne particulate pass directly through the
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
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charging and collecting stages. This assures that all
system air is filtered.
Conventional media filters rely on fiber density for particulate removal efficiency. A media filter is rated efficiency is based on the average efficiency over the filter is life. Since the initial filter efficiency is lower than
the rated efficiency, a substantial amount of particles
go unfiltered. In contrast, PurePac delivers the rated
efficiency instantly and continuously. The high-density charging and collecting zones produce an immediate and constant removal rate regardless of particle
size.
Reliability
The PurePac uses a programmable logic controller
(PLC) for system control and monitoring, in conjunction with high frequency electronics, to deliver optimum performance and assure the highest degree of
reliability.
The versatile control system can be easily integrated
with existing building management systems, adding
another degree of reliability in the overall building system.
The durable, all aluminum 2-stage electronic collectors feature unitary construction and are designed to
last the lifetime of the system. The integrated automatic wash system assures optimum performance
and maximum system reliability.
Value
PurePac's design features increased collector surface
area in a smaller package compared to conventional
systems, resulting in higher dirt holding capacities and
reduced system footprint. This translates into extra
available floor space, up to 30% in some instances.
PurePac's low resistance to airflow results in reduced
fan horsepower and fan energy cost. Over a period of
time, this reduction amounts to significant savings in
energy costs. Since PurePac uses wash-in-place
electronic collectors, replacement filter cost, disposal
cost and labor cost are eliminated.
When it comes to value, PurePac delivers. High performance and reliability in a compact design, and low
operating cost make PurePac the ideal choice for
today's IAQ challenges. Call us, and we'll prepare a
life cycle cost comparison for your filtration system
and show you how PurePac can deliver performance,
reliability and value.
System Description
PurePac Front Access Model (FA) is packaged as a
complete system, including the electronic air purifier,
system control, detergent dispenser and system
accessories. Components are furnished factory
assembled, except for the electronic air purifier, which
is shipped knocked-down for field installation inside
the air handler or ventilation duct.
PurePac Model FAuses Flanders type HCC electronic collectors and modular design, arranged in multiple
tiers and varying widths to attain the specified capacities and efficiency. The versatile design and modular
construction can accommodate all sizes of ventilation
systems by installing multiple units side-by-side.
PurePac Delivers
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
Page 4
Options
PurePac is available with TechSorb HMZD bonded,
activated carbon panels for gas phase contaminant
and odor control. Since the granules are locked
together, TechSorb eliminates settling, dusting, and air
by-pass, which are typical in loose granular carbon filters.
TechSorb is furnished in disposable panels, eliminating the messy chore of emptying and refilling loose
carbon holding frames.
TechSorb is impregnated with select enhancers, making it an extremely effective sorbent media for
formaldehyde and other gas contaminants present in
new or remodeled buildings.
System Accessories
Each PurePac Front Access system is furnished with the
following standard accessories.
Wash water strainer 1 each
Ball valve. 1 each
Backflow preventer 1 each
Solenoid valve 1 each
Access door electrical interlock & pilot light. 2 each
Detergent 55 gal
Utilities
Electrical
Standard: 120 Vac, 1 ph, 60 Hz
Optional: 208-230, 460 Vac, 1 ph, 50/60 Hz
Wash Water:(See Selection Table) gpm @ 40 psig
System Drain: Sized according to applicable codes
to handle water and detergent volume shown in Size
Selection Table
PLC Control automatic
or manual operation.
30 Gallon Detergent
Dispenser liquid level sensor and flow control valve.
Model FA-0604 (metal mesh
prefilters removed)
System Accessories
solenoid valve, backflow preventer, Y-
strainer and ball valve.
PurePac Front Access Units
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
Page 5
PurePac Front Access Units
Model Number Development
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Nominal Nominal
Access Height Width
FA 06 06
Represents a PurePac Front Access unit, model
FA0606, nominally 6 feet high by 6 feet wide, as illustrated below.
Unit Selection Guide
1. From the Size Selection Table below, select the Model
FA with Air Volume and Dimensions that meet the
required efficiency.
2. Multiple Model FA units of the same height may be
grouped together to create larger, multi-section units.
3. Each Model FA is shipped complete with the System
Accessories as shown on Page 4.
Front Elevation Side Elevation
Air Volume (cfm) Dimensions (3)Wash Cycle
Face (1,2)Efficiency Overall (in) Water Detergent (4)Wt.
Model Area(ft2) 95% 90% 85% H W gpm gal (lb)
FA-0604 22.8 10,000 12,500 14,000 77 3/8 50 3/8 28.8 1.4 1,025
FA-0605 28.32 12,500 15,500 17,500 77 3/8 61 3/16 36 1.8 1,160
FA-0606 33.84 15,000 18,000 21,000 77 3/8 72 43.2 2.2 1,295
FA-0804 30.4 13,500 16,500 18,500 102 5/8 50 3/8 38.4 1.9 1,250
FA-0805 37.76 16,500 20,500 23,000 102 5/8 61 3/16 48 2.4 1,540
FA-0806 45.12 20,000 24,500 27,500 102 5/8 72 57.6 2.9 1,740
FA-1004 38 16,500 20,500 23,500 127 7/8 50 3/8 48 2.4 1,610
FA-1005 47.2 21,000 25,500 29,000 127 7/8 61 3/16 60 3 1,830
FA-1006 56.4 25,000 30,500 34,500 127 7/8 72 72 3.6 2,055
FA-1204 45.6 20,000 24,500 28,000 153 1/8 50 3/8 57.6 2.9 1,900
FA-1205 56.64 25,000 30,500 35,000 153 1/8 61 3/16 72 3.6 2,165
FA-1206 67.68 30,000 36,500 41,500 153 1/8 72 86.4 4.3 2,430
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
Page 6
PLC Control automatic
or manual operation.
30 Gallon Detergent
Dispenser liquid level sensor and flow control valve.
Model FA-0604 (metal mesh
prefilters removed)
System Accessories
solenoid valve, backflow preventer, Y-
strainer and ball valve.
Conforms to ANSI/UL
STD 867 for Electrostatic
Air Cleaners
PurePac Side Access Units
System Description
PurePac Side Access Model (SA) is a factory packaged system including the side access housing, wash
system, electronic collectors, control system, detergent dispenser, and accessories. The factory assembled system is designed for installation in air handlers
and ventilation systems.
The side access cabinet features unitary construction
with flanges on the upstream and downstream sides
to bolt in-line with new or existing air handling systems. The cabinet is furnished complete with pre and
post mist eliminators, electronic collectors, integral
wash system and electrically interlocked access door.
Options
PurePac Model (SA) is available with TechSorb
HMZD, bonded, activated carbon panels for gas
phase control. The TechSorb is contained in a separate cabinet that conveniently bolts to the exhaust side
of the Model SA cabinet. The panels are arranged in
a V Bank configuration using fully gasketed tracks to
eliminate air by-pass.
System Accessories
Each PurePac Side Access system is furnished with
the following standard accessories.
Wash water strainer..........................................1 each
Ball valve..........................................................1 each
Backflow preventer...........................................1 each
Solenoid valve.................................................1 each
Detergent..........................................................55 gal
Utilities
Electrical
Standard: 120 Vac, 1 Ph, 60 Hz
Optional: 208-230, 460 Vac, 1 Ph, 50/60 H
Wash Water: (See Selection Table) gpm @ 40 psig
System Drain: Integral 3î FNPT
Agency Approval
Each PurePac Side Access system is ETLlisted, conforming to ANSI/UL 867 Standard for Electrostatic Air
Cleaners
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
Page 7
PurePac Side Access Units
Model Number Development
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Side Nominal Nominal
Access Height Width
SA 02 03
Represents a PurePac Front Access unit, Model
SA0203, nominally 2 feet high x 3 feet wide, as illustrated below.
Unit Selection Guide
1. From the Size Selection Table below, select the Model
SA with Air Volume and Dimensions that meet the
required efficiency.
2. Multiple Model SA units of the same height may be
arranged side-by-side to create a larger, multi-section
unit. Specify one unit with left hand and one unit with
right hand access doors.
3. Each Model SA is shipped complete with the System
Accessories shown on Page 6.
Inlet Elevation Access Side Elevation
Air Volume (cfm) Dimensions (in) (3) Wash Cycle
Face (1,2)Efficiency Overall Inlet/Outlet Water Detergent (4) Weight
Model Area(ft2) 95% 90% 85% A B C gpm gal (lb)
SA-0203 5.6 2,500 3,000 3,500 40 1/4 41 7/8 31 1/2 7.2 0.4 510
SA-0204 7.6 3,500 4,000 4,500 40 1/4 54 3/8 31 1/2 9.6 0.5 570
SA-0205 9.4 4,000 5,000 6,000 40 1/4 65 1/8 31 1/2 12 0.6 650
SA-0206 11.3 5,000 6,000 7,000 40 1/4 76 31 1/2 14.4 0.7 785
SA-0403 11.3 5,000 6,000 7,000 64 1/8 41 7/8 55 3/8 14.4 0.7 710
SA-0404 15.2 6,500 8,000 9,500 64 1/8 54 3/8 55 3/8 19.2 1 810
SA-0405 18.9 8,500 10,000 11,500 64 1/8 65 1/8 55 3/8 24 1.2 930
SA-0406 22.6 10,000 12,000 14,000 64 1/8 76 55 3/8 28.8 1.4 1,110
SA-0407 26.4 11,500 14,500 16,500 64 1/8 88 5/8 55 3/8 33.6 1.7 1,225
SA-0408 30 13,000 16,000 18,500 64 1/8 99 3/8 55 3/8 38.4 1.9 1,335
SA-0409 33.8 15,000 18,500 21,000 64 1/8 110 1/8 55 3/8 43.2 2.2 1,445
SA-0603 16.9 7,500 9,000 10,500 88 41 7/8 79 1/4 21.6 1.1 860
SA-0604 22.8 10,000 12,500 14,000 88 54 3/8 79 1/4 28.8 1.4 1,100
SA-0605 28.3 12,500 15,500 17,500 88 65 1/8 79 1/4 36 1.8 1,180
SA-0606 33.8 15,000 18,500 21,000 88 76 79 1/4 43.2 2.2 1,315
SA-0607 39.6 17,500 21,500 24,500 88 88 5/8 79 1/4 50.4 2.5 1,500
SA-0608 45 20,000 24,500 27,500 88 99 3/8 79 1/4 57.6 2.9 1,685
SA-0609 50.8 22,000 27,500 31,000 88 110 1/8 79 1/4 64.8 3.2 1,860
(1) ASHRAE 52.1-92 Test Standard (3) Based on 40psi water pressure
(2) Capacities may be rounded to nearest 500 cfm (4) Total system net weight
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
Page 8
A. General
The electronic air cleaner shall be the two stage,
dual voltage, plate type electrostatic precipitator,
sized to clean the airflow capacities scheduled on
the Contract Documents at an efficiency of at least
(specify %) as determined by the ASHRAE
Standard 52.1-92, Dust Spot Test Method. Air
cleaner shall be furnished with built-in high pressure, low volume water/detergent washing system
and programmable logic control for complete automatic operation.
B. Configuration (Select B.1or B.2)
B.1 The electronic air cleaner shall be furnished in a
side access housing, fabricated from 16 gage galvanealed steel, continuously welded, primed and
painted. The housing shall be furnished with gasketed, hinged access door with safety electrical
interlock, flanged inlet/outlet collars, built-in cleaning system and sloped bottom drain pan. The
housing shall be tracked for and furnished with aluminum pre and post mist eliminators and ionizingcollecting cells.
B.2 The electronic air cleaner shall be front/rear
access, furnished using prefabricated, galvanized
framework designed to contain ionizing-collecting
cells and wash system. All frame sub-assemblies
shall be match marked and prepared for bolted
field assembly. Base support framework shall be
stainless steel. All necessary fasteners and fittings
shall be furnished. Framing shall be designed for
cell removal either upstream or downstream and
pre-punched air by-pass baffles shall be provided
for the upstream side. The foundation supporting
the framework, including drains and specified
opening shall be prepared by the Contractor in
accordance with the manufacturer's recommendation and written instructions.
C. Electronic Collector Modules
Ionizing-collecting cells shall be of industrial design
integrity and single unit construction. The cells
shall be all aluminum construction except the ionizing electrode shall be of the rigid stainless steel
type without serrated spikes or the tungsten wire
type. Repelling and collecting plates shall be positively retained in place using tie rod and tubular
spacer design. High voltage insulators shall be
molded from structural, self-glazing ceramic; shall
contain no appurtenances; shall be of radial and
bilateral symmetry; shall contain no high voltage
penetrations and shall not contact the high voltage
on the process air side. The entire assembly shall
be suitable for handling cold saturated air.
D. Built-in Cleaning System
Water/detergent washing system shall be high
pressure, low volume type. Detergent, wash and
rinse water shall be applied by oscillating copper
manifolds containing brass spray nozzles, located
on both the air entering and air leaving side of each
module tier. Complete, effective washing of all ionizing-collector cell surfaces and all appurtenances
shall be provided. Drive motors, used to oscillate
the manifolds, shall be high torque, gear reduced,
totally enclosed fan cooled type, and be permanently lubricated. Drive linkage shall be a rigid,
positively fastened type without tracks or sprockets.
One detergent dispensing assembly shall be provided to serve each electronic air cleaner. The
detergent dispenser shall consist of a (specify 30
or 55) gallon anti-corrosive reservoir, positive displacement pump, motor, and flow volume control
valve.
Solenoid valve, strainer, backflow preventer, ball
valve, and an initial supply of detergent shall be furnished by the electronic air cleaner manufacturer.
E. Control and High Voltage Power Supplies
Each electronic air cleaner shall use a single
remote-mounted control and power supply, contained in NEMA 12 enclosures. The unit shall operate on 120 Vac, 1Ph, 60 Hz.
The control shall be of the programmable logic
(PLC) type, furnished in a NEMA 12 enclosure,
preprogrammed to sequence the electronic air
cleaner through wash cycles at a schedule to be
determined with the Owner. Integral electronic
time clock with manual override shall be provided.
High voltage power supply, furnished in a NEMA 12
enclosure, shall be the high frequency, solid state
type, supplying a dual voltage and current output
specified by the electronic air cleaner manufacturer. Power supply shall have a regulated input and
output for line fluctuations of 10% and shall have a
current limiting shutdown and restart feature.
The face panel of the enclosures shall contain indicators for electronic air cleaner control status (run,
wash, etc.), individual power supply, primary circuit
indicating light, monitoring instrumentation, and onoff switch.
Provide enable/disable contacts suitable for interface with the specified Building Control and
Management System (BMS).
F. Electrical Interlocks
Furnish duct door electrical interlocks, disconnect
switch, and pilot light assembly. All access to electronic air cleaners and high voltage power packs
shall contain electrical safety interlocks which deenergize the primary power circuit prior to accessing high voltage.
Engineering Specifications
Flanders Precisionaire - Foremost in Air Filtration
Engineered Products: 1-800-637-2803 Replacement Products: 1-800-347-2220
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