AS/NZS 3666.1:1995

1 - AS/NZS 3666.1:1995 AIR-HANDLING AND WATER SYSTEMS OF BUILDINGS - MICROBIAL CONTROL - DESIGN, INSTALLATION AND COMMISSIONING
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
10 - SECTION 1 SCOPE AND GENERAL
10 - 1.1 SCOPE
10 - 1.2 OBJECTIVE
10 - 1.3 APPLICATION
11 - 1.4 REFERENCED DOCUMENTS
12 - 1.5 DEFINITIONS
12 - 1.5.1 Aerosol
12 - 1.5.2 Air filter
12 - 1.5.3 Air-handling plant
12 - 1.5.4 Air-handling system
12 - 1.5.5 Air intake
12 - 1.5.6 Air outlet
12 - 1.5.7 Approved and approval
12 - 1.5.8 Biocide
12 - 1.5.9 Bleed-off (or Blowdown)
12 - 1.5.10 Building
12 - 1.5.11 Clean
12 - 1.5.12 Cleaning
12 - 1.5.13 Coil
12 - 1.5.14 Commissioning
12 - 1.5.15 Competent person
12 - 1.5.16 Cooling tower
12 - 1.5.17 Cooling water system
12 - 1.5.18 Corrosion resistant
12 - 1.5.19 Dead-leg
13 - 1.5.20 Drift
13 - 1.5.21 Duct
13 - 1.5.22 Ductwork
13 - 1.5.23 Evaporative air cooler
13 - 1.5.24 Evaporative condenser
13 - 1.5.25 Exhaust outlet
13 - 1.5.26 Hot water
13 - 1.5.27 Humidifier
13 - 1.5.28 Humidifier fever
13 - 1.5.29 Hypersensitivity pneumonitis
13 - 1.5.30 Installation
13 - 1.5.31 Legionnaires disease
13 - 1.5.32 May
13 - 1.5.33 Pontiac fever
13 - 1.5.34 Recirculation
13 - 1.5.35 Regulatory authority
13 - 1.5.36 Shall
13 - 1.5.37 Should
13 - 1.5.38 Sole occupancy dwelling
13 - 1.5.39 Terminal unit
13 - 1.5.40 Warm water
14 - SECTION 2 DESIGN, INSTALLATION AND COMMISSIONING OF AIR-HANDLING SYSTEMS
14 - 2.1 GENERAL
14 - 2.1.1 Outdoor air
14 - 2.1.2 Access for maintenance
14 - 2.1.3 Provision for maintenance
14 - 2.1.4 Building plans
14 - 2.2 AIR INTAKES
14 - 2.2.1 General
14 - 2.2.2 Location
14 - 2.3 EXHAUST AIR OUTLETS
14 - 2.3.1 General
14 - 2.3.2 Location
14 - 2.4 AIR FILTERS
15 - 2.5 HUMIDIFIERS
15 - 2.5.1 Location
15 - 2.5.2 Integration of controls
15 - 2.5.3 Precipitation of moisture
15 - 2.5.4 Disposal of moisture
15 - 2.6 EVAPORATIVE AIR COOLERS
15 - 2.6.1 Materials and construction
15 - 2.6.2 Location
15 - 2.6.3 Drains
15 - 2.7 COILS
15 - 2.7.1 General
15 - 2.7.2 Disposal of condensate
15 - 2.8 TRAYS AND SUMPS
15 - 2.8.1 General
16 - 2.8.2 Materials and construction
16 - 2.8.3 Collection of condensate and water
16 - 2.9 CONDENSATE AND EQUIPMENT DRAINAGE
16 - 2.9.1 General
16 - 2.9.2 Discharge
16 - 2.10 FAN ASSEMBLIES
16 - 2.11 DUCTWORK AND COMPONENTS
16 - 2.11.1 Design and installation
16 - 2.11.2 Drainage
16 - 2.11.3 Access for inspection and cleaning
17 - 2.12 TERMINAL UNITS
17 - 2.13 COMMISSIONING
18 - SECTION 3 DESIGN, INSTALLATION AND COMMISSIONING OF HEATED WATER SYSTEMS
18 - 3.1 GENERAL
18 - 3.1.1 Access for maintenance
18 - 3.1.2 Provision for maintenance
18 - 3.1.3 Materials
18 - 3.1.4 Pumps
18 - 3.1.5 Water treatment units
18 - 3.1.6 Water storage tanks
18 - 3.1.7 Layout
18 - 3.2 HOT WATER SYSTEMS
18 - 3.3 WARM WATER ABLUTION SYSTEMS
18 - 3.4 COMMISSIONING
19 - SECTION 4 DESIGN, INSTALLATION AND COMMISSIONING OF COOLING WATER SYSTEMS
19 - 4.1 GENERAL
19 - 4.1.1 Access for maintenance
19 - 4.1.2 Provision for maintenance
19 - 4.1.3 Water treatment systems
19 - 4.1.4 Materials
19 - 4.1.5 Cooling towers
20 - 4.2 PUMPS
20 - 4.3 LOCATION
20 - 4.4 DRIFT CONTROL
20 - 4.5 CONTROL OF SOLIDS
20 - 4.6 SUNLIGHT
21 - 4.7 COMMISSIONING

Specifies minimum requirements for design, installation and commissioning of air-handling and water systems in buildings to assist in the control of microorganisms. It does not apply to sole occupancy dwellings, nor is it intended for the control of the wide range of discomfort symptoms which may affect the occupants of some buildings.

This Standard specifies minimum requirements for the design, installation and commissioning of air-handling and water systems of buildings, other than sole occupancy dwellings. It does not include refrigerated room air-conditioners and nonducted split systems.NOTE: Air-handling and water systems which are not dedicated to a sole occupancy dwelling come within the scope of this Standard.Requirements specified in this Standard are not intended for the control of the wide range of discomfort symptoms which may afflict the occupants of some buildings.NOTES:1 The Standard covers the most common known sources of the diseases associated with air-handling and water systems of buildings. Other sources, both known and potential, include cooling water systems for refrigeration equipment and air compressors, industrial heat exchangers when opened for cleaning, decorative fountains, spray irrigation systems, and industrial water-based cutting fluid systems.2 In the event of an outbreak of Legionnaires disease, special action is necessary. This will be advised by the health authorities.3 Further information on the control of microbial growth in air-handling and water systems of buildings is given in SAA/SNZ HB32.4 SAA HB61 provides details of the standard specifications in the NATSPEC series.5 Operation and maintenance requirements are given in AS/NZS 3666.2.

First published as part of AS 3666-1989.
Jointly revised and redesignated in part as AS/NZS 3666.1:1995.