Retrotec FanTestic Integrity (ISO) - Manual (Page 34)

rev-2014-10-27
Page 34 of 50
©Retrotec Inc. 2012
3.5 Enter optional Lower Leaks Test for Enclosure Hold Time Analysis
Lower leaks tests are either Flex Duct tests or Plastic on the Ceiling tests, which are only performed if
the Total Enclosure Leakage test has failed.
If the entered “Total Enclosure Leakage” data results in a failure, this will be stated in the “Results
Summary” of the Total Enclosure Leakage test. At that point, the user clicks on the “Add Lower leaks
Test” button at the bottom of the “Hold time analysis: Total Enclosure Leakage” expander tab, and a
new expander will be added for the user to enter the results from performing a lower leaks test.
The test procedure for a lower leaks test is the same as a Total Enclosure Leakage test, with the addition
of some form of neutralizing the leaks that are occurring from the upper part of the enclosure. The
lower leaks test procedure is required to negate the leakage above the enclosure’s suspended ceiling by
neutralizing the ceiling space (with a Flex Duct), or by physically covering the entire ceiling space (with
sheets of plastic air barrier).
Lower leaks Test data is entered in the same manner as the Total Enclosure Leakage data.
FanTestic Integrity factors in results from both tests to provide new test results in the “Results
Summary” of the Lower leaks test. The main result is calculation of a value for the leakage fraction F,
which is otherwise defaulted to the most conservative value of 0.5.
For more information on Lower leaks tests, please consider attending the Retrotec Level 3 Enclosure
Integrity Training.