Australian Standard
AS/NZS 5149 Refrigerating Systems for CRAC Units
AS/NZS 5149 compliance for DX CRAC units, refrigerant handling, installation, maintenance, repair and recovery in Australian server rooms.
AS/NZS 5149 is the main refrigerating systems standard family for DX CRAC units and any precision cooling equipment with a refrigerant circuit. It covers classification, design, installation, testing, site requirements, maintenance, repair and recovery.
For CRAC owners, AS/NZS 5149 matters most during commissioning, refrigerant repair, leak investigation, decommissioning and any major upgrade that changes charge, pipework, condenser location or ventilation assumptions.
Compliance checks
What we check on CRAC sites
01
Confirm refrigerant type, charge, labels and documentation match the installed CRAC equipment.
02
Check pipework, isolation, pressure testing and site ventilation for new or modified systems.
03
Record refrigerant handling by appropriately licensed technicians.
04
Maintain leak test, recovery and repair records for service history.
05
Review replacement strategy for legacy refrigerants under the HFC phase-down.
Related services
Services connected to AS/NZS 5149
DX CRAC Servicing
Direct expansion CRAC unit maintenance for data centres, server rooms and mission-critical infrastructure.
CRAC Maintenance
Preventative CRAC maintenance, quarterly service plans and emergency fault response across all major precision cooling brands.
CRAC Commissioning
ARC-licensed CRAC commissioning, Site Acceptance Test packs and warranty activation support for new and refit installations.
Spare Parts Supply
OEM and equivalent CRAC spare parts — fans, valves, sensors, control boards, humidifiers, drives.
FAQs
Which CRAC units are covered by AS/NZS 5149?
DX CRAC units and any precision cooling systems with refrigerant circuits are covered. Chilled water CRAH room units may not contain refrigerant, but the connected chiller plant will have its own refrigerating system obligations.
Do technicians need ARC licensing as well as AS/NZS 5149 knowledge?
Yes. AS/NZS 5149 sets technical obligations for refrigerating systems, while ARC licensing is required by regulation for refrigerant handling. A maintenance or commissioning report should make clear who performed the refrigerant work and what readings were recorded.