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BEAM P
LUS FOR
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UILDINGS
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3 V
ENTILATION
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ARKS
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 74
The air leakage limit on ductwork shall conform to the criteria given in the
Code of Practice for Energy Efficiency of Air Conditioning Installations
[2], and the test method shall be based on DW143 [3], SMACNA [4] or
equal equivalent method.
Where there is a need to take into account trade-off of performance
between the mechanical ventilation and the lighting installations, the
submitted calculations shall show that the extra energy used due to non-
fulfillment of one criterion has been more than compensated by the extra
energy saving due to a better performance over and above the other
criterion.
2
Electrical and Mechanical Services Department. Code of Practice for Energy Efficiency of Air Conditioning
Installations (2007 Edition) and the subsequent amendment.
http://www.emsd.gov.hk/emsd/e_download/pee/accop_2007.pdf3
Heating and Ventilation Contractors Association, UK. DW143 A Practical Guide to Ductwork LeakageTesting
2000.
4
Sheet Metal and Air Conditioning National Contractors Association (SMACNA) IAQ Guideline for Occupied
Buildings under Construction. http:
//www.smacna.org/