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Keeping Things TightThe Latest in Blower Door andDuct Testing TechnologyGary NelsonThe Energy ConservatoryMinneapolis, MN
DG-700 Replaces the DG-3IntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG¾ Since July 2003, DG-3 discontinued.¾ DG-700 is the standard Blower Door and DuctBlaster instrument.¾ DG-700 is designed to operate with all TECtesting equipment.DG-700DG-3
DG-700’s Added FeaturesIntroductionBlower DoorDuct BlasterCombustion Safety¾ 2 pressure sensors with simultaneous display ofboth building (or duct) pressure and fan flow.¾ No need to switch between channels - moreintuitive for airtightness testing.¾ Display always shows which air flow device (fan)and configuration (flow ring) are chosen.DemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOGBuildingor DuctPressure(Pa)Fan Flow(CFM)
DG-700 Blower Door Features¾ Specialized PR/ FLOW @50 Mode for One-PointBlower Door tests. IntroductionBlower Door Duct BlasterCombustion Safety Demonstrations New DevelopmentsDG-700 SimTECTITETECLOGGauge displays CFM50 on Channel B. (Can’tReach 50 Factor is built-in to the flow reading)Saves time - no need to adjust test pressure toexactly 50 Pa - just get close (45 - 55).Very stable readingsIn very leaky buildings, displays leakage estimate ifbuilding pressure is at least 10 Pa.
DG-700 Blower Door Features¾ Why conduct One-Point Blower Door tests usingPR/ FLOW @50?IntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG Fast and easy.No software required.Reasonable airtightness results.
DG-700 Blower Door Features¾ Computer interface for automated Blower Doortesting (Multi-Point test).Introduction Blower Door Duct Blaster Combustion Safety Laptop computer.TECTITE software (3.0 ).Modified fan speed controller with comm. jack.Cabling (serial cable and fan control cable).DemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOGSerialCommunicationPortFan ControlJack
DG-700 Blower Door Features¾ Why conduct Multi-Point automated Blower Doortests?Introduction Blower DoorDuct Blaster Combustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG Reduces operator errors, improves consistencybetween tests.Improved accuracy in windy weather, and providesoverall estimate of test accuracy.Better method for estimating leakage areas.
DG-700 Blower Door Features¾ BASELINE Feature: IntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG Baseline feature makes it simple to always take abaseline pressure measurement during theBlower Door test. (Baseline is the buildingpressure before turning on the Blower Door fanand fan sealed).Baseline reading is stored in the gauge.Gauge displays the baseline adjusted housepressure (i.e. baseline reading is automaticallysubtracted from the building pressure).Eliminates need to calculate adjusted targetpressure.
DG-700 Duct Testing Features¾ Specialized PR/ FLOW @25 Mode for Total DuctLeakage tests.Introduction Blower DoorDuct Blaster Combustion SafetyDemonstrations New Developments DG-700 SimTECTITETECLOGGauge displays CFM25 on Channel B. (Can’tReach 25 Factor is built-in to the flow reading)Saves time - no need to adjust test pressure toexactly 25 Pa - just get close (20 - 30).Very stable readingsIn very leaky duct systems, displays leakageestimate if Duct Pressure is at least 5 Pa.
DG-700 Duct Testing Features¾ For Leakage to Outside tests (simultaneous useof Duct Blaster and Blower Door), use generalpurpose PR/ FLOW Mode.IntroductionBlower Door Duct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG With Blower Door pressurizing building to 25 Pa,Duct Blaster adjusted to create zero pressurebetween ducts and building.Only advantage of DG-700 with this test issimultaneous display of duct pressure and fanflow, and device and configuration indicators.
Combustion Safety Testing FeaturesIntroduction¾ Use the Baseline featureto measure worst-case fandepressurization. Blower DoorDuct BlasterCombustion SafetyWhen exhaust fans areturned on, gauge willdisplay change inpressure caused by fans.(Fan Off) - Measuring Baseline PressureDemonstrationsNew Developments0-1DG-700 Sim-2TECTITE-3-4TECLOG(Fan Off) - Baseline Adjusted Pressure-2.6(Fans Off)-5.2-7.8(Fan On) - Change in Pressure-5(Change)-6-7(Fans On)
Combustion Safety Testing FeaturesIntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG¾ Connect DG-700 to laptopand simultaneously recordfan depressurization andvent performance.¾ TECLOG software isavailable at no-charge.
DG-700 DemonstrationsIntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG
New Developments¾ TECTITE Mechanical Ventilation Guideline. IntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG The latest version of TECTITE incorporates amechanical ventilation guideline based onASHRAE Standard 62.2.Estimates the required mechanical ventilation ratefor the building based on occupancy and BlowerDoor test results.
New Developments¾ Infrared Thermography with a Blower Door. IntroductionBlower DoorDuct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG View building components before Blower Door fanis turned on (detect missing or poorly installedinsulation).View components with Blower Door fan running(differences indicate air leakage paths).
New Developments¾ Zone Pressure Testing Software. Introduction Blower DoorDuct Blaster Combustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG Software estimates air leakage of attachedbuilding zones (e.g. garage, attic).Manually input Blower Door test data and zonepressure measurements into software.Zone leakage test results include estimate of testuncertainties.Available for free from TEC website.
New Developments¾ Alternative Duct Testing Procedures. IntroductionBlower Door Duct BlasterCombustion SafetyDemonstrationsNew DevelopmentsDG-700 SimTECTITETECLOG Delta-Q (attempts to measure actual leakageusing a series of 4 Blower Door tests). Requiresautomated tests and software.Blower Door Subtraction (airtightness estimatedby comparing automated Blower Door testresults with registers sealed and unsealed).Requires automated tests and software.TEC is working on proto-type software for bothmethods.
TEC Website¾ www.energyconservatory.com¾ Available to download:Introduction Blower Door Duct Blaster Combustion Safety Demonstrations New DevelopmentsDG-700 SimTECTITETECLOGProduct ManualsTECLOG Software.Zone Pressure Diagnostics Software.30-day Demo of TECTITE & TECBLAST Software.Check What’s New.
Minneapolis, MN. Introduction Blower Door Duct Blaster Combustion Safety Demonstrations New Developments DG-700 Sim TECTITE TECLOG ¾Since July 2003, DG-3 discontinued. ¾DG-700 is the standard Blower Door and Duct Blaster
