This Standard specifies minimum requirements for the operation and maintenance of airhandling and water systems of buildings for the purposes of microbial control. It does not include requirements for refrigerated room airconditioners and non-ducted split systems.

NOTES:

1 In the event of an outbreak of legionnaire's disease, special action will be necessary. This will be advised by the health authorities.

2 Further information on the control of microbial growth in air-handling and water systems of buildings is given in HB 32.

3 Design, installation and commissioning requirements are given in AS/NZS 3666.1.

4 AS/NZS 3666.4 and AS/NZS 3666.3 provide performance-based alternatives to the prescriptive cleaning requirements of Clause 2.3 and 2.5 of this Standard.