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RESNET NEW REQUIREMENTS January 1, 2007. RESNET STANDARD 2004 – 03 BLOWER DOOR TEST PROCEDURES. This Presentation Jointly Prepared by. New Requirements. - PowerPoint PPT Presentation



  • This Presentation Jointly Prepared by

  • New RequirementsStarting Jan 1, 2007, HERS Providers are required to perform an annual field calibration check on Blower Door pressure testing instruments and fans. Providers must use standards and procedures recommended by the equipment manufacturer.Providers must maintain a written log of the annual calibration check for a period of 3 years.Similar requirements for all associated pressure testing instruments.

  • Appendix A: Building Element: Air Leakage

    Use the testing protocol described in ASHRAE Standard 119 Section 5.1. Blower door and associated pressure testing instruments, which include but are not limited to hoses, and Manometers, gauges, and fans shall be FIELD TESTED annually for calibration by the HERS provider or rater. The provider shall use a standard for field testing of calibration provided by the equipment manufacturer. Magnehelic Gauges cannot be field tested and shall be recalibrated by the Blower Door manufacturer annually. Field check the fan and flow measuring systems for defects and maintain them according to manufacturers recommendations. The HERS provider shall maintain a written log of the annual calibration check to verify all equipment accuracy for a period of three (3) years. These records shall be made available within 24 hours to a RESNET Quality Assurance Committee member upon request. It is recommended all pressure equipment be field checked for calibration more frequently than is required in these standards, i.e., monthly, quarterly, etc. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

    Determine effective leakage area from a blower door test.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

    Blower door test.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxRated Feature Task On-Site Inspection Protocol

  • Just having a perfect gaugeby no means ensuresreadings will be accurateColin Genge, Retrotec

  • Field TestingMay NOTRequire Calibration

  • Using inappropriate flow ring on fan. (newer gauges help eliminate this mistake). Tubing leaking, kinked or plugged up.Tubing hooked up improperly.Damaged fans (e.g. broken flow sensor, housing).Gauges out of calibration. Note: If both channels have an identical error, the effect on the the result is significantly reduced.Incorrect test procedures.Common Reasons forInaccurate Readings

  • The Energy Conservatory (TEC)

    Recommended Calibration Check Procedures

  • TEC Recommended Calibration Check ProceduresDigital Pressure Gauges (choose either method)Perform the digital gauge field calibration check procedure found at orRecalibrate gauge at TEC factory - $50.

  • Digital Gauge Field Calibration Check

    Field check procedure consists of comparing digital gauges against a DG-700 gauge that is being used as an in-house pressure standard. This procedure involves comparing pressure readings from the DG-700 Standard gauge with the gauge being tested (DG-700 or DG-3) at a number of different pressures.

  • Digital Gauge Field Calibration Check

    Readings are recorded and the difference between the readings is determined.If the difference is smaller than the maximum allowed, gauge passes the field calibration check.If difference is larger than the maximum allowed, gauge should be sent to TEC for calibration.

  • Digital Gauge Field Calibration Check

    Ideally, the DG-700 Standard should be recalibrated once every 6 months and only used as a pressure standard (not used in field). Otherwise, using a DG-700 that has just been returned from TEC calibration is acceptable. Pressures are created by syringe for field check (TEC has them available). Syringe is placed on table and pressures are allowed to stabilize before readings are made.Magnehelic gauge is used only to prevent over-pressurization.

  • TEC Factory Digital Gauge Calibration

    Gauge is tested against a NIST traceable pressure standard at 20 different pressure values.Gauge is recalibrated and tested again.Calibration certificate is provided.$50 cost includes ground UPS shipping back to customer.Turn around time at TEC is typically 3-4 days (assuming no repairs needed).

  • TEC Factory Digital Gauge Calibration

    Digital gauge calibration certificate looks like this.

  • TEC Recommended Calibration Check ProceduresBlower Door and Duct Blaster Fans (choose either method)Perform the fan field check procedure found at fan at TEC factory - $200.

  • Fan Field Check Procedure

    The 2 most important aspects to maintaining proper fan calibration (Blower Door and Duct Blaster):No leaks in flow sensor.Sensor in proper position.Damaged fan housing (e.g. broken flange) and broken/ missing blades can also effect calibration and should be repaired.

  • Fan Field Check Procedure

    Simple procedures and forms for checking flow sensor position and flow sensor integrity are contained in the fan field check document.If fan meets specifications listed in the procedure, the fan passes the field check.If fan does not meet specifications, contact TEC for adjustment/repair instructions.

  • TECFactory Fan Calibration

    Fan is calibrated using ASTM Standard E1258 with a test chamber constructed according to ASHRAE 51/AMCA 210.Calibration certificate is provided including custom calibration parameters.$200 cost (shipping is extra). Turn around time at TEC is typically 4-5 days (assuming no repairs needed).

  • TECFactory Fan Calibration

    Fan calibration certificate looks like this.Custom fan calibration parameters can be input into TEC software (TECTITE or TECBLAST) for greater test accuracy.

  • TEC Recommended Calibration Check Procedures

    Duct Blaster System Field Check(meets requirements for both the Fan and Gauge)Perform the Duct Blaster System field check procedure using an approved orifice plate.

    This procedure will be available on the TEC website in the Spring 07. Approved orifice plates will also be available at that time.

  • Approved orifice plate is attached to the end of the square transition piece. Air is drawn through orifice plate and into the flex duct.Fan is adjusted to specified test pressure.Measured flow (or hole size) from digital gauge is compared to standard listed in the procedure.Pass/fail criteria listed in the procedure.Duct Blaster System Field Check Procedure

  • TEC Recommended Calibration Check ProceduresMagnehelic Gauges

    TEC will perform an accuracy check on Magnehelic gauges for $15 per gauge (at the TEC factory).The accuracy of the gauges will be tested and recorded, however, calibration adjustments on Magnehelic gauges will no longer be performed.

  • TEC Recommended Calibration Check ProceduresCheck Tubing for Leaks or Obstructions

    Tubing should be periodically checked for leaks and obstructions. Periodically trim off off the ends of tubing to remove damaged ends. If tubing leaks or is obstructed, replace it immediately.


    Recommended Calibration Check Procedures

  • Retrotec Duc-Tester Calibration Verification Procedure This procedure should be used whenever a new Duc-Tester is received to verify both the system and the operator. The Verification Plate, which has a leakage rate of 100 cfm at 25 Pa, is attached to the Duc-Tester to simulate a duct system. Readings between 96 and 108 cfm indicate no significant problems with the test method or the equipment. If readings fall outside this range, use the Duc-Tester Problem/Solution Checklist to fix the problem. Repeating this 5 minute test every month or after 20 tests will detect problems early. No further calibration of the system is required unless the Duc-Tester fails this Verification.

  • Problems causing inaccurate readings in order of frequency are:


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