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LFDC room-sidereplaceable flter model

Thumb wheel retainershold flter in housing

LFDC SeriesHEPA-FILTERED LAMINAR FLOW DIFFUSERS

Non-mixing, vertical air

pattern diffusers with

integral HEPA lters for

the most critical spaces.

www.price-hvac.comfor additional produc

information, including product videos and brochures

LFDC Series diffusers provide low velocity, vertical air patterns

and feature integral ltration. The room-side replaceable lter

system provides convenient access for lter changes and

monitoring. All units are PAO Tested.

Aerosol injectionsystems available

Airtight gel seal flters

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Laminar Flow Diuserwith High Efciency FilterLFDC Series

Price LFDC Series Laminar Flow Diuserswith replaceable high eiciency iltershave been designed to suit the criticalrequirements o modern cleanrooms. TheLFDC provides a means o controllingparticle contamination within a room byproviding unidirectional laminar ow oair. Due to its low initial ace velocity, thediuser introduces clean supply air to thespace without entrainment o contaminatedair rom the occupied space.

The LFDC is a ducted supply diuser withan easily replaceable high efciency flter.The assembly has a unique gel seal design,which allows removal and replacement othe flter without moving or disconnecting

the diuser housing rom the ceiling system.Features

Airtight construction o flter housing.

An easily removed perorated ace.

Static pressure test port.

The static pressure port is used during actorytesting or leaks, as well as in the feld tomeasure the pressure drop across the flter.

Each standard LFDC housing assembly isactory scan tested or leaks.The test ensuresthat pinholes or edge leaks are detected atthe actory and corrected beore shipment.

Application

Depending on the cleanliness level requiredin the space, a single LFDC with flter canbe located directly over a work station, ormultiple diusers can be mounted in theceiling. The Price LFDC is ideally suited tomount into gasketed T-bar ceiling systems,such as the Price HDCR Series gasketedcleanroom ceiling system, or in plasterceilings.

Applications include clean spaceenvironments in research, industryand medical acilities. This includes thesemiconductor industry, aerospace industry,pharmaceutical/biotechnology industry andhospital operating or patient isolation rooms.

Price LFDC are all actory tested to assurecasing leakage is consistent with the flter.The Price LFDC with flter is designed as a

low profle diuser to keep the intrusiono the flter housing into the ceiling plenumto a minimum. A 2 in. (51) thick flter elementis utilized, which keeps the overall diuserhousing height to 61/2 in. (165).

Product Information

Product Information Index

Product Features & Options ..... E123-E125Perormance Data ............................E126Suggested Specifcation ............... ..E193

Required for AFI apps.

Finish

Aluminum construction units feature

the B12 white powder coat fnish on allcomponents (optional fnishes available).

Stainless steel construct ion units

eature #4 brushed fnish on all exposedcomponents and 2B polished on theplenum and other components not visiblerom the room side.

LFDC

Dimensional Data - Imperial (in.) / Metric (mm)

Nominal Diffuser Size Inlet Size Filter Area

Imperial 24 x 24 8, 10, 12 2.037 ft2

24 x 36 8, 10, 12 3.464 ft2

24 x 42 8, 10, 12 4.177 ft2

24 x 48 8, 10, 12 4.890 ft2

Hard Metric 600 x 600 8, 10, 12 3.043 ft2

600 x 1200 8, 10, 12 6.478 ft2

PAO Tested

E-122All Metric dimensions ( ) are soft conversion . Copyright Price Industries Limited 2011.Imperial dimensions are converted to metric and rounded to the nearest millimeter.

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Static Pressure Port

Usedtomeasurepressuredropacross flter.

Usedtosampleaerosolconcentrations beore the flter whentesting flter or leaks.

Filter Housing

Airtightconstructionatalljointsandcorners.

Inletcollarsealedtohousing.

.040in.(1)aluminumconstruction..035 in. (1) stainless steel construction.

FactoryPAOtestedforleaks.

Gel Seal

Filterframecavityflled with siliconegel seal.

Knifeedgeange

penetrates gel toprovide leakprooseal between flterand housing.

High Efciency Filter Individuallytestedforparticlepenetration

and air ow resistance.

Packagedseparatelyforprotectionandinstallation at jobsite.

2in.(51)thickseparatorlessconstructionelement in 3 in. (76) deep anodizedaluminum rame.

Border/Mounting Frame

Extrudedaluminumconstruction (AL construction).

Brushed 304 stainless steel (SSconstruction).

DesignedforeithergasketedT-bar or plaster ceilinginstallations.

Perorated Face

Easilyremovableperforatedfaceprotects flter media.

Flushappearancewithquarter-turn asteners.

Product Selection Checklist

1] Select Diuser Type by model number (LFDC).2] Select Inlet Diameter.3] Select Diuser Size based on ceiling module.4] Select Filter Type (HE, HEPA, ULPA, FRB).5] Select Volume Control Damper (VCR8E) i desired (page E124).6] Select Insulated Housing (AFI) i desired (page E124).7] Select Damper Construction i required.

Example: LFDC / 10 / 24 x 48 / HEPA


Product Features

Filter Retainers

Four(4)thumbwheelretainershold flter in housing.

Allowseasymeansofremovingand replacing flter withoutdisturbing ceiling seal or duct

connections. Uniqueadjustablelatch

prevents air leaks by notpenetrating through the knieedge rame.

Copyright Price Industries Limited 2011. All Metric dimensions ( ) are soft conversion .Imperial dimensions are converted to metric and rounded to the nearest millimeter. E-123


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Product Options

Hanger Brackets (HB)

Mountedonthetopfourcorners

o housing.

Insulated Housing (AFI)

Controlsmoisturecondensationorthermal

gain.

1/2 in. (13) max. external aluminum oil backinsulation.

InsulationmeetsASTM-84andUL723

requirements.

APForAPFGplasterframerequiredfor

surace mount installation with AFI insulation.

Volume Control Damper

Steelconstructionfull-owtype

damper. Stainless steel alsoavailable.

Remotecableoperatorusedtoadjust damper with flter in placeusing a standard screwdriver.

Operatorshaftpositivelysealed

against leakage.

Operator Shat


Inlet Diusion Basket

Equalizesairdistributionovertheltermedia,improves

flter loading and extends flter lie.

Filter Replacement Bafe (FRB)

When the LFDC is to be provided withouta lter and

HEPA flters are to be added at some uture date, theFRB equalizes air ow over the diuser ace to provide auniorm, laminar pattern.

Whenthelterisinstalled,theFRBisremoved.

TheFRBtsinexactlywherethelterwillbeinstalledso

that there is no additional hardware required.



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Product Options


71/2 (190)

LED Filter Indicator Option

LEDindicatorlightturnsfromgreento

yellow when the pressure drop over theflter exceeds the specifed limit.

Yellowlightindicatesthatlterisstill

unctional but should be replaced assoon as possible.

LEDisvisiblefromoccupiedarea,so

there is no need to open the unit inorder to determine the flterstatus.

LEDoperationisunaffectedbyroom

pressure changes.

LEDkitrequires24VAC

powersupply, which is to be provided byothers.

LEDkitisavailablefactoryinstalledor

shipped loose or feld installation.

FactoryinstalledLEDkitcomeswith

actory pre-calibrated switch (150% othe initial clean flter pressure drop). Itcan be feld adjusted i required. Maxavailable pressure setting is 1.0 in. w.g.

Fieldinstalledkitcomeswithswitch

that requires feld calibration to suitspecifc job conditions - instructions areincluded in Installation Manual.

LED Pressure Switch LED Controls Enclosure

Face Mounted LED Indicator Light



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Performance Data

24 x 24 Module, 10 Round Inlet

Performance Notes:

1. sp = Static Pressure, in. w.g.

2. cm = Air fow in cubic eet per minute, cm.

3. NC = Noise Criteria. NC values are based on room absorption o 10dB re 10-12 watts.

4. Blanks () indicate NC level below 15.

5. sp and NC at ull open damper position.

6. Tested in accordance with ASHRAE Standard 70-2006.


HE 95% on .3 mm HEPA 99.99% on .3 mm ULPA 99.999% on .12 mm

cm sp NC sp NC sp NC

150 0.13 -- 0.23 -- 0.34 --

200 0.18 -- 0.30 -- 0.44 --

250 0.25 -- 0.39 -- 0.54 --

300 0.31 16 0.47 18 0.67 18

350 0.37 19 0.55 21 0.80 22

400 0.45 22 0.65 24 0.92 26


cfm sp NC sp NC sp NC

100 0.13 -- 0.25 -- 0.33 --

150 0.22 -- 0.36 -- 0.50 --

200 0.32 -- 0.50 -- 0.70 --

250 0.43 -- 0.62 -- 0.88 --



200 0.14 -- 0.25 -- 0.36 --

250 0.18 -- 0.32 -- 0.45 --

300 0.24 -- 0.40 -- 0.56 --

350 0.29 -- 0.45 -- 0.66 --

400 0.34 -- 0.54 -- 0.75 17

450 0.39 16 0.60 18 0.87 20

500 0.47 18 0.70 20 1.00 22



200 0.11 -- 0.22 -- 0.33 --

300 0.19 -- 0.34 -- 0.48 --

400 0.27 -- 0.45 16 0.62 --

500 0.35 18 0.56 22 0.78 22

600 0.45 24 0.68 26 0.92 26






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Price oers a variety o products withreplaceable high efciency flters. All flteredmodels are room-side replaceable and areequipped with an easily removable ace,allowing or the replacement o the flterwithout access to the ceiling or ductwork.The flter is attached to the diuser withour cam-type retainers which providepositive astening and easy removal. Agel seal flter rame and knie-edge angeprovide a leakproo seal between the flterand housing. Several grades o flter areoered, as per the chart on this page.

Construction

High efciency flters or Price diusers area 2 in. (51) or 3 in. (76) thick separatorlessconstruction in anodized aluminum rames.See next page or installation details.

The ilter media is abricated using amoisture-resistant microine iberglassthat is ormed into closely spaced pleats,held irmly in place with polyurethanesealant bead separators. This separatorlessconstruction allows or more compactpleating o the pack than separator-typeilters. Thereore, a 2 in. separatorlessflter element contains approximately thesame amount o media as a 6 in. deepseparator-type flter. Separatorless fltersare recommended or critical applicationsbecause the aluminum separators inseparator-type ilters can oxidize andcontribute to particle contamination.

Product Overview

95% (High Efciency)0.3m particle size.Individually tested perMIL-STD-282 orefciency and resistance.Lower initial resistanceand higher dust-holdingcapacity than HEPAflters.

m = Micron = 106m = 0.000001 meter

*Other flter efciencies available upon request.

Filter Types*

High Efciency FiltersFor Clean Space Applications

The room-side replaceable flter rame cavityis flled with a silicone gel seal designed toprovide an airtight seal between the flterand the flter housing. The seal remainsstable and sel-healing under the mostdemanding conditions, yet allows the flterto be easily removed and replaced. The gelis highly sel-adhesive and will not stick tothe flter housing when the flter is removed.

The ilter rame cavity is 100% sealed,providing an airtight seal between theilter and the ilter housing. The sealremains stable under the most strenuouscircumstances.

Packaging

Filters will be packaged separately rom

the flter housing and shipped directlyrom the flter manuacturer to the jobsite.This is to minimize the risk o damageto the flters during transportation andhandling. Filters should be removed romtheir cartons and installed once the systemhas been cleaned and blown down withboth roughing and pre-flters in place.

Installation

All installations should be operated withroughing (30% ASHRAE eiciency) andpre-flters (90% ASHRAE efciency). It isrecommended that these two stages beutilized, which will extend the high efciencyflter lie by nearly 10 times. When installed

in such a manner, the flter should provideyears o service.

A periodic (annual) check o air ow isrecommended. When the flter throughputdeclines to an unacceptable level due toparticle accumulation, the flter should bereplaced. Contact Price Customer Serviceor replacement inormation.

HEPA flters with aminimum efciencyo 99.99% on 0.3mparticles. Filters aretested in accordance withIES-RP-CC001.3recommended practiceor type C flters. Testaerosol is either DioctylPhthalate (DOP) or PSL(Polystyrene Latex).

ULPA flters with aminimum efciencyo 99.999% on 0.1mparticles. Filters aretested in accordance withIES-RP-CC00.7 or overallpenetration and leakage.Challenge aerosol usedis PSL (PolystyreneLatex).



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Filter Installation Details

Figure 1. Room-side replaceable flters

Filter Frame

Anodizedaluminum

Filter Element

Nominal 2 in. (51) or 3 in. (76)depth

Separatorlesspleatedberglass

Gel Seal

Filterframelledwithsiliconegel

Allowsltertobeeasilyremoved

Filter Housing

Airtightconstructionat all joints

Knie Edge

Penetratesgelforairtight seal

Mounting Frame

LFDCshown

Filter Retainers Four (4) thumbwheel retainers

hold flter in housing.

Allowseasymeansofremovingand replacing flter withoutdisturbing ceiling seal or ductconnections.

Price unique adjustable latchprevents air leaks by notpenetrating through the knieedge rame.



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Factory Testing

In order to achieve the required cleanlinesslevel in a cleanroom or other criticalapplication, the entire diuser / ilterassembly must be ree o leaks to preventunfltered air rom entering the space. Allflters supplied by Price are tested by theflter manuacturer at their actory to veriythe specifed efciency and leakage.

Price actory tests all products with room-side-replaceable high efficiency filtersusing methods corresponding to IESTRecommended Practices or scan testing.This is to ensure that Price products housingand rames are consistent with the fltersleakage standards.The scan test will identiypinholes in a weld or joint undetectable byconventional leakage tests.

Factory leak testing takes place in a Class10,000 cleanroom, where each plenum ischallenged with a polyalphaolefn smoke.A photometer is used to scan the plenumor leaks.

A label is attached to each plenum veriyingthe unit has passed the actory test.


Factory Testing

PAO Tested

Note: PAO - polyalphaolefn (PAO).

Clean Room Assembly

To urther ensure product quality andconsistency, Price goes beyond PAO testing.All Price products with high-efciency fltersare assembled inside the same 2000 sq.tcleanroom that is home to the PAO testing.Certifed technicians assemble Price modelamilies LFDC, RFDC, AMDC and FFU in thisclean, careully controlled manuacturingenvironment. The Price cleanroom eaturessecure access doors to ensure only certifedPrice technicians are working on or testingthese products which are destined or suchcritical applications. Airborne contaminantcontrol is achieved in the Price cleanroomusing Price FFU units to supply nearly 20 air

changes per hour o HEPA fltered supply.

Cleanroom or actory assembly and leak test

Factory PAO Test



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Application Inormation

Air Flow

Cleanroom Applications

Applications or Price products with higheiciency ilters include clean spaceenvironments in research, industry andmedical acilities.

Microelectronics - manuacturingsemiconductor circuits includingmaterial production, water abrication,assembly, and testing where particlesize removal to 0.12m is necessary.

Pharmaceutical - manuacture osterile pharmaceutical products, suchas injectables and topicals wherebacterial contamination removal iscritical.

Biotechnology - applications inermentation, ood processing,antibiotics, and genetic engineeringwhere contamination and containmento organisms is to be controlled.

Medical - used in surgery and patientisolation areas where contaminationmust be limited to prevent inection.

Other - including aerospacemanuacturing and assembly, advancedmaterials research, and laser/opticindustries.

Non-Unidirectional Air Flow Unidirectional Air Flow

Contaminated room air is mixed anddiluted with clean supply air, providingless demanding levels o cleanliness.

Contaminated room air is displaced withclean supply air, providing highest degreeo cleanliness.

Cleanrooms can be dierentiated by twotypes o supply air ow: non-unidirectional(turbulent) and unidirectional (low-turbulence) ows.

Non-unidirectionalairowleadstoa dilution o air contamination byentraining room air and turbulentlymixing it with clean primary supply air.

ThePriceRFDC,FRFDC,AMDC,RVDCare designed to providenon-unidirectional ow o air into aroom.

Unidirectionalairowdisplacescontamination by moving clean supplyair in a low-turbulence or laminar owthrough an entire room. When theclean air is introduced rom the ceiling,this provides a nominally parallel airow; this space is known as a verticallaminar ow room.

ThePriceLFDCandFFUaredesignedto provide a unidirectional or verticallaminar ow o air into a room.

A cleanroom ceiling is comprised o laminarow diusers with flters. As the class othe cleanroom gets lower (cleaner), a largerproportion o the ceiling will requirefltered diusers.




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The cleanliness level o a cleanroom is partlydetermined by the type o flter utilized andthe rate o air change in the room. Reer tothe Engineering Guide or flter efciencyrecommendations.

The ilter selection by particle removalefciency is determined by the application.The MERV rating is used to denote particleremoval efciency. MERV is the MinimumEiciency Reporting Value based onASHRAE Standard 52.2-1999. Typically,medical or ood processing applicationsmay require MERV 14 to 18 (95% to 99.99%),while microelectronics applications mayutilize MERV 20 (99.999% on 0.1 micronparticles). For hospital applications, the flter

efciency is determined by ASHRAE or othergoverning bodies. The table to the right canbe used as a reerence. Where two flterbanks are indicated, Filter Bank No. 1 shouldbe located upstream o air-conditioningequipment and Filter Bank No. 2 shouldbe downstream o the supply an. Whereonly one flter bank is indicated it shouldbe located upstream o air-conditioningequipment.

Air supply volume must take into accountthe ollowing:

Minimumair changeratestomeet theappropriate clean room standards orremoval o internal contamination.

Internalheatgain.

Air volume required to pressurize theroom.

Perormance data tables are provided todemonstrate the air ow characteristicso all Price products with flters. Selectiono the size and number o air outlets canbe made by determining total air volumerequirements (air changes) in the room andthe required air velocities within the room.


Application Inormation

Filter Efciency or Central Ventilation andAir-Conditioning Systems in General Hospitals

Reerence: 2007 ASHRAE HVAC Applications Handbook.

Minimum Number

o Filter Beds Area Designation

Filter Efciencies,

MERVa

No. 1 No. 2

2 Orthopedic operating room

Bone marrow transplant operating room

Organ transplant operating room

8 17b

2 General procedure operating rooms

Delivery rooms

Nurseries

Intensive care units

Patient care rooms

Treatment roomsDiagnostic and related areas

8 14

1 Laboratories

Sterile storage

13 --

1 Food preparation areas

Laundries

Administrative areas

Bulk storage

Soiled holding areas

8 --

aMERV = Minimum Efciency Reporting Value, based on ASHRAE Standard 52.2-1999.bHEPA flters at air outlets.



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Products with HE/HEPA/ULPA Filters

Critical EnvironmentsSuggested Specifcation

LFDC - with High Efciency Filter

Supply and install Price LFDC Laminar Flow Diuser with highefciency flter o the sizes and capacities indicated on the drawingsor diuser schedule.

Each diuser shall provide a unidirectional or laminar ow lowvelocity supply o clean air to the space.

The diuser shall consist o a ceiling mounting rame, peroratedace, airtight flter housing, remote operated volume controldamper (optional), and replaceable high efciency flter.

The border shall be o extruded aluminum construction andsuitable or use in gasketed T-bar ceilings or plaster ceilings. Theborder shall have an integral knie edge ange which penetratesa silicone gel in the flter rame to provide a leakproo seal.

The perorated ace shall be .040 (1) thick aluminum peroratedwith .188 (5) diameter holes staggered 60 .25 (6) centers,

surrounded by an extruded aluminum rame. The ace shallopen easily with 90 quick-release asteners and saety chainsor easy access to the flter.

The ilter housing shall be o .040 (1) thick aluminumconstruction and sealed airtight at all joints and corners. The inletcollar shall be sealed to the top o the flter housing. A staticpressure port shall be ftted to allow measurement o thepressure drop across the flter. The unit is to be actory sealedand tested to assure that leakage is consistent with the flter.

The volume control damper (optional) shall be a steel constructionull ow type damper located in the inlet collar. A remote cableoperator shall be used to adjust the damper while the flter is inplace.

The flter shall be a 2 (51) thick separatorless constructionelement in a 3 (76) deep anodized aluminum rame. The fltershall have an integral cavity flled with a silicone gel that willprovide a leak-tight seal between the flter rame and the

border. Filters shall be packaged separately rom the flterhousing in a actory carton until site conditions are appropriateor installation (by others) o the flter into the housing.

The flter shall be selected rom the ollowing particle sizes:95% HE on .3 m, 99.99% HEPA on .3 m or 99.999% ULPA on0.12 m, and shall be individually tested or particle penetrationand initial air ow resistance.

The flter shall be held in place by our (4) cam-type retainerswhich can be turned 90 by hand, providing an easy means oremoving and replacing flters without disturbing the flterhousing in the ceiling or the duct connection.

The border, perorated ace flter housing, and optional volumecontrol damper shall be a B12 white powder coat fnish.

The manuacturer o the laminar ow diuser with replaceableflter shall provide perormance data or air volume, initialpressure drop, sound levels, and average ace velocity.

All data must be tested in accordance with ASHRAE Standard70-2006 Method o Testing or Rating the Perormance o AirOutlets and Inlets.

Optional:

An integral diusion basket shall be included to ensure evendistribution and equal loading o the HEPA flter.

LFDCSS - with High Efciency Filter

Supply and install Price LFDCSS Stainless Steel Laminar FlowDiuser with high efciency flter o the sizes and capacitiesindicated on the drawings or diuser schedule.

Each diuser shall provide a unidirectional or laminar ow, lowvelocity supply o clean air to the space.

The diuser shall consist o a ceiling mounting rame, peroratedace, airtight flter housing, remote operated volume controdamper (optional), and replaceable high efciency flter.

The border shall be o 304 stainless steel construction and suitableor use in gasketed T-bar ceilings or plaster ceilings. The rameshall have an integral knie edge ange which penetrates asilicone gel in the flter rame to provide a leakproo seal.

The perorated ace shall be .037 (1) thick brushed 304 stainlesssteel, perorated with .188 (5) diameter holes staggered 60 on.25 (6) centers, surrounded by a brushed stainless steel rameThe ace shall have stainless steel 90 quick-release asteners oeasy access to the flter. The ace assembly shall be astened tothe rest o the diuser with saety chains.

The flter housing shall be constructed with continuously weldedcorners. The inlet collar shall be sealed to the top o the fltehousing. A static pressure port shall be itted to allowmeasurement o the pressure drop across the flter. The unit isto be actory sealed and tested to assure leakage is consistenwith the flter.

The volume control damper (optional) shall be a steel constructionull ow type damper located in the inlet collar. A remote cableoperator shall be used to adjust the damper while the flter is inplace.

The optional volume control damper shall be a sterile whitethermal setting fnish.

The flter shall be a 2 (51) thick separatorless constructionelement in a 3 (76) deep anodized aluminum rame. The fltershall have an integral cavity flled with a silicone gel that wilprovide a leak-tight seal between the flter rame and the borderFilters shall be packaged separately rom the flter housing in aactory carton until site conditions are appropriate or installation(by others) o the flter into the housing.

The flter shall be selected rom the ollowing particle sizes95% HE on .3 m, 99.99% HEPA on .3 m or 99.999% ULPA on0.12 m, and shall be individually tested or particle penetrationand initial air ow resistance.

The flter shall be held in place by our (4) cam-type retainerswhich can be turned 90 by hand, providing an easy means oremoving and replacing flters without disturbing the fltehousing in the ceiling or the duct connection.

The manuacturer o the laminar ow diuser with replaceableflter shall provide perormance data or air volume, initiapressure drop, sound levels and average ace velocity. Aldata must be tested in accordance with ASHRAE Standard70-2006 Method o Testing or Rating the Perormance o AiOutlets and Inlets.

Optional:

An integral diusion panel shall be included to ensure evendistribution and equal loading o the HEPA flter.

Copyright Price Industries Limited 2011 All Metric dimensions ( ) are soft conversion

E 193


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