PANDAPAN341
“PositiveandNegativeDuctworkAccreditation”DuctLeakageTester
PANDA PAN341“Positive and Negative Ductwork Accreditation”
Quantifies air leakage in commercialductwork
Generates a PASS/FAIL result
PANDA 341Duct Leakage Tester
1. Whytestforductleakage?2. Whatarethestandards?3. Whoarethecustomersandhowtoapproachthem?4. Howdoesitwork?5. Featuresandbenefits
Why Test For Duct Leakage?
+ Noductsystemisairtight
+ Asleakageincreases,moreairandenergyarerequiredtomaintaindesignconditions
• Increasesoperatingcosts
• Unabletomeetdesignairfloworcomfortparameters(tempandRH)
Why Test For Duct Leakage?
+ Unwantedcontaminantsmigratingtootherareas
• Laboratoryexhaust
• Industrialprocesses
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Why Test For Duct Leakage?
+ Meetregionalstandardsorrequirements
• Localcodes
• Architecturalengineeringplans
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EN
Standards+ Europe
• DW/143• Eurovent 2/2• EN1507• EN12237• EN13779
+ NorthAmerica• SMACNA(SheetMetalAndAirConditioningContractorsNationalAssociation)- HVACAirDuctleakageTestManual
European Standards
+ MaximumAllowableleakagerateperunitareaofductSurfaceaccordingtoAirTightnessClass
Air Tightness Class
Static Pressure Limit (ps) Pa
Air Leakage Limit (fmax) m3.s-1.m-2 Positive Negative
A 500 500 0.027 ∗ 0.65
1000
B 1000 750 0.009 ∗ 0.65
1000
C 2000 750 0.003 ∗ 0.65
1000
D* 2000 750 0.001 ∗ 0.65
1000
* Class D ductwork is only for special apparatus
North America Standards
+ DuctworkclassificationfromSMACNA+ MaximumAllowableleakagerateperunitarea(100Sq.ft.)ofductSurfaceAreaaccordingtoLeakageClass
APPLICABLE LEAKAGES CLASSES , SMACNA Standard
DUCT CALSS 1/2", 1", 2" W. G. 3" W. G. 4", 6", 10" W. G.
SEAL CLASS C B A
SEALING APPLICABLE
TRANSVERSE JOINTS ONLY
TRANSVERSE JOINTS AND SEAMS
JOINTS, SEAMS AND ALL WALL PENETRATIONS
LEAKAGE CLASSRECTANGULAR
METAL 24 12 6
ROUND METAL 12 6 3
Who Tests for Duct Leakage+ Mechanical/SheetMetalContractors
• InstallHVACsystemcomponentsperengineeringdrawings- Airhandler- Heatingandcoolingcomponents- Ductworkanddampers- Grillesanddiffusers
• DuctleakagetestingisperformedastheductsarebeingconstructedandinstalledintotheHVACsystem- Easyaccesstoductwork- Noobstructions
+ Commissioning• Generallywitnessesleakagetestingandsignsoffonreport
What is a Duct Leakage Test?
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Static Pressure
Air Flow Rate
Leakage means more Air Flow
required!
Fan adjusted to achieve Static
Pressure
PANDASet-up Summary
1. Blank‐offasectionofDucting
2. ConnectFlexibleHosetoPANDA
3. ConnectFlexibleHosetoDucting
4. AdjustPANDAFantoachievetestPressure
5. Put5numbersintotheApplication
6. RuntheTest!
Positive Pressure Test
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+ PositivePressure– HighFlow• ConnecttotheFanOUTLET
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VeryTightSystem?+ PositivePressure– LowFlow
• AttachLowFlowNozzle• ConnecttotheFanINLET
Negative Pressure Test
+ NegativePressure– HighFlow• ConnecttotheFanINLET
VeryTightSystem?+ NegativePressure– LowFlow
• AttachLowFlowNozzle• ConnecttotheFanINLET
Connect to Ductwork+ KeepPANDAflexibleductlengthtoaminimum+ KeepPANDAflexibleductasstraightaspossible+ Makesurebothendconnectionsaresealed+ MakesurePANDAflexibleducthasnoleaks
+ PressureReadingtubefromthePVM610shouldbeconnecteddirectlytotheductworkundertest
+ Blank‐offallOpenEndsincludingtappings andtestholes+ Blankatconvenientplacewitheasyaccess
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Adjust PANDA to Test Pressure
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Pressure Reading
Fan Speed Control
Fan Run/Stop Switch
Two Instruments
1) PVM610
• MeasurestheStaticPressureintheDuct
• Connectthe+porttotheduct
• Leavethe– portopentoatmosphere
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Two Instruments
2) TA465‐P
• MeasurestheAirFlowRate
• MeasurestheAirTemperature
• MeasuresBarometricPressure
• ApplicationCalculatesPASS/FAIL
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TA465-P Flow Connections
+ High FlowTesting
• ConnecttoFLOWGRIDmarkedP1(+)andP2(‐)
+ Low FlowTesting
• ConnecttoNOZZLEmarkedP1(+)andP2(‐)
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Set-up Test Application
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Enter key parameters into TA465-P:1. Surface Area of ductwork section to be tested
Surface Area not Volume or Cross-sectional Area
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+ +
Set-up Test Application
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Enter key parameters into TA465-P:1. Surface Area of ductwork section to be tested
2. Static Pressure of test, as measured by Model PVM610 micromanometer
3. Flow Device as Nozzle or Flow Grid
4. Air Tightness Class A to Da) ‘A’ is the easiestb) ‘D’ is the tightest
5. Test Length, or duration of leakage testa) Minimum recommended time is 5 minutes..
Run the Test+ Click‘START’toRunTest
• Results
PASS: Leak Factor is below Leak Limit
FAIL: Leak Factor is above Leak Limit
Check Ducting for Leaks
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Look – Atblanks,accessopeningsanddifficultjoints
Listen – withtestrigrunning,leaksshouldbeaudible
Feel – runningyourhandoverjointscanhelplocateleaks
SmokePellet– placedinsideductwork(canbecorrosivesoobtainpermission)
ThermalImagingCamera– providesquickandeasyvisualizationofleaks
FAIL: Leak Factor is above Leak Limit
PANDA Set-up Summary
1) Blank‐offasectionofDucting2) ConnectFlexibleHosetoPANDA3) ConnectFlexibleHosetoDucting4) AdjustPANDAFantoachievetestPressure5) Put5numbersintotheApplication6) RuntheTest!
PANDA
• Weight:45kg(99lbs)
• RemovableBox
• RemovableFlexibleDuct
Features and BenefitsPowerfulblowerbuilds‐upthestaticpressurefast
Transportable
Real‐timeresults
UserFriendly
Versatileinstrument
Ruggedindustrialconstruction
Features+ UserFriendly:
• Variablespeedblowermotorcontrol• DirectreadingdigitalInstruments• Builtinductleakageapplications
- Savestime,lessmath+ PASS/FAIL results
• DataLoggingCapability• Nochartsorgraphstoread• Automaticallycorrectforairdensity
+ Powerfulblowerbuilds‐upthestaticpressurefast!!• Allowsforlongerductrunstobetested
- Testupto120mlong,1m2 ductin20minutes+ EasilyswitchfromPositivePressuremodetoNegativePressureMode
• Repositionflexductconnectiononblower+ Easilyswitchfromhighflowmodetolowflow+ Ruggedindustrialconstruction
Thank You!!!
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PANDA PAN341
o Sheet Metal Contractors o Test and Balancerso Commissioning/Acceptance test engineers o HVAC Manufacturerso Design Engineers
Powerful and fast Transportable
Real-time resultsUser Friendly
Versatile instrument Rugged industrial construction..
Ideal for:
PANDA PAN341“Positive and Negative Ductwork Accreditation”
Questions?
Primary Market - New building Installations Target - Meet standards or requirements
EN1507- Requirement for Strength and Leakage Rates of Rectangular Ducts
EN12237- Requirement for Strength and Leakage Rates of Circular Ducts
Defines Maximum Allowable leakage rate per unit Area of Duct Surface
According to 4 Air Tightness Classes
Meet regional standards or requirements Europe
• EN13779Ventilation for buildings - Achieve a good air quality with acceptable installation and running costs
• HVCA DW/143 Ventilation for buildings: Guidance document for Ductwork Leakage Testing
• Eurovent 2/2 Ventilation for buildings: Air Leakage Rate in Sheet Metal Air Distribution Systems
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Air Tightness Class
Static Pressure Limit (ps) Pa
Air Leakage Limit (fmax) m3.s-1.m-2 Positive Negative
A 500 500 0.027 ∗ 0.65
1000
B 1000 750 0.009 ∗ 0.65
1000
C 2000 750 0.003 ∗ 0.65
1000
D* 2000 750 0.001 ∗ 0.65
1000
* Class D ductwork is only for special apparatus
Primary Market - New building Installations Target - Meet standards or requirements
Meet regional standards or requirementsNorth America
• SMACNASheet Metal And Air Conditioning Contractors National Association
HVAC Air Duct leakage Test Manual
Meet regional standards or requirementsNorth America
• SMACNA
- Ductwork classification from SMACNA
- Maximum Allowable leakage rate per unit area (100 Sq. ft.) of duct Surface Area according to Leakage Class
APPLICABLE LEAKAGES CLASSES , SMACNA Standard
DUCT CALSS 1/2", 1", 2" W. G. 3" W. G. 4", 6", 10" W. G.
SEAL CLASS C B A
SEALING APPLICABLE
TRANSVERSE JOINTS ONLY
TRANSVERSE JOINTS AND SEAMS
JOINTS, SEAMS AND ALL WALL PENETRATIONS
LEAKAGE CLASSRECTANGULAR
METAL 24 12 6
ROUND METAL 12 6 3
Primary Market: New Building Installations Target: Meet standards or requirements Test and Balancing Engineers
o Leak Test the HVAC system before balancing
o Saves time correcting the Balance when leaks are found
o They make more money providing an extra service to meet the standards
o They will get repeat business
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Primary Market: New Building Installations Target: Meet standards or requirements Commissioning/ Acceptance Test Engineers
o Leak Test the HVAC system before other checks
o Saves time checking the Balance when leaks are found
o They make more money providing an extra service of checking that standards are met
o They will get repeat business
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Primary Market: New Building Installations Target: Meet standards or requirements HVAC Manufacturers – Sheet Metal Contractors
o Leak Test the HVAC system before shipping to site
o Leak test the ducting before shipping to site
o Guarantee of product quality and saves time on site
o This will help them win contracts and get repeat business
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Primary Market: New Building Installations Target: Meet standards or requirements Design Engineers and Specifiers
o If Duct Leakage Testing is specified then the test must be carried out!
o This group may not be customers, but they are influencers
o Duct Leakage Testing makes for an Energy Efficient Building
Secondary Market: Existing Installations Target: desire to improve energy performance
o Facilities Management
o HVAC Maintenance Companies
o HVAC Planning Engineers
o Customers of a HVAC system
Additional Market: Special Applications Target: desire to do a tightness test
o Cleanroom builders/installers
o Car and truck manufacturers
o Aerospace (plane tightness test)
o Chimney Manufacturers
o Confined spaces/cabinets
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