Retrotec Commercial 441 and 451 DucTester - Manual (Page 49)

Page 49 of 56
©Retrotec Inc. 2015
Measurement Procedure for CFM at Test Pressure or Percent Leakage
Test Technician ___________________________________Test Date _____________
Test Location _________________________________________________________
Follow the color Model 441/451 Quick Guide that comes with your system. Print out these
four pages to direct your test. Use this Test Form if total CFM at a Test Pressure or Percent
Leakage of the airhandler is the pass/fail criteria for the test. If not, use “Appendix X1 U.S.
Measurement Procedure for Leakage Factor or Leakage Class”.
□ Check off each box to learn the procedure for your first test.
Pass Fail for U.S. tests
Total Duct Leakage at the specified test pressure is the pass/fail criteria and is a value given by
the system designer. CFM flow at the test pressure are read out directly on the DM32 Gauge or
from Retrotec’s FanTestic software.
This is common wording for the pass/fail criteria:
3. “If, at the specified test pressure(s), the Leakage is lower than or equal to the total
specified CFM, the system Passes. “
4. “If, at the specified test pressure, the Leakage is lower than or equal to the specified
percentage of airhandler flow, the system Passes. “
Follow Steps 1 to 7.
Notes:
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