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AS/NZS 5263.1.10:2019


Gas appliances, Part 1.10: Gas direct fired air heaters

This Standard specifies general requirements and test methods for direct fired air heaters, which use gas as a fuel and are intended for domestic, commercial or light industrial use with energy input not exceeding 500 MJ/h. This Standard provides requirements for appliances for portable use or fixed installation.
Published: 21/01/2019
Inclusive of GST
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Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope and general
1.1 Scope and Application
1.1.1 Scope
1.1.2 Application
1.2 Referenced documents
1.3 Terms and definitions
1.4 Test methods
2 Design and construction
2.1 Scope
2.2 General design requirements
2.2.2 Positioning of removable components
2.2.12 Provision for removal of condensate
2.2.101 Prevention of manual contact with fan impeller
2.3 Materials
2.4 Design for assembly and installation
2.5 Design for maintenance
2.5.8 Means for gas pressure measurement
2.6 Design for operation
2.7 Controls and safety devices
2.7.7 Tip over system
2.7.101 Use of limit devices
2.8 Gas train
2.8.2 Provision of pressure regulators
2.8.101 Control of start gas flow rate
2.8.102 User adjustment of pressure regulator
2.8.103 Low pressure detector
2.9 Combustion air and flue systems
2.10 Fan assisted combustion systems
2.11 Burners and ignition systems
2.11.10 Tray type burners — Turndown limits
2.12 Components
2.13 Cylinders and cylinder compartments
2.14 Markings
2.14.2 Permanent markings on appliances
2.14.101 Provision of marking relating to ventilation
2.15 Instructions
2.15.2 Installation Instructions supplied with the appliance
2.15.3 Operation Warning statements
2.15.4 Maintenance Servicing instructions and maintenance schedule
3 Preliminary tests — Line gases
3.1 General
3.2 Preparation for testing
3.3 Gas leakage
3.4 Gas consumption
3.5 Gas pressure regulators
3.6 Ignition and safety shut off systems
3.6.1 General requirements Flame failure
3.6.2 Additional requirements for atmospheric burners with automatic burner ignition systems not based on permanent pilots
3.6.3 Additional requirements for fan assisted combustion systems with automatic ignition not based on permanent pilots Pre-ignition purge Ignition cycles prior to lockout (no flame established) Reignition cycles after flame failure
3.6.101 Flame extension
3.6.102 Pilot burner stability
3.6.103 Burner ignition
4 Tests under limiting conditions
5 Performance specifications
5.1 Combustion air supply
5.1.2 Obstruction of air inlets with fan assisted combustion systems
5.2 Flue operation
5.3 Condensate
5.4 Temperature hazards
5.4.2 Appliance operating conditions
5.4.3 Temperature limits — Surrounding surfaces
5.4.5 Temperature limits — Surfaces likely to be accidentally touched
5.4.7 Temperature limits — Protection from contact with the heat source Primary guard temperature limit Temperatures of unguarded surfaces (Australia only) Primary guard integrity Air discharge temperature
5.5 Heat resistance of appliance
5.5.1 Resistance to temperatures Test conditions
5.5.3 Minimum temperature requirements of heat exchangers during warming-up period
5.5.4 Maximum temperature requirements for heat exchanger materials
5.6 Durability
5.7 Electrical supply variation or failure
5.7.101 Power failure
5.8 Appliance operation under linting conditions
5.9 Rain test for outdoor and room sealed appliances
5.10 Operation under windy conditions
5.11 Strength and stability
5.12 Thermal efficiency
5.13 Vitiation and emissions
5.13.1 Operation of oxygen depletion system
5.13.2 Vitiation
5.13.3 Combustion at low appliance inlet pressure
5.13.4 CO/CO2 ratio at manufacturer’s nominal test point pressure
5.13.5 Nitrogen dioxide emission rate (Australia only)
5.101 CO, CO2, NO2 and formaldehyde limits at manufacturer’s rated air throughput
5.102 CO, CO2, NO2 and formaldehyde limits at reduced air throughputs
5.103 Flame characteristics
5.104 Burner stability when changing settings
Appendix ZA
ZA.101 Gas consumption test — Directly connected LP Gas appliances
ZA.101.1 Scope
ZA.101.2 Principle
ZA.101.3 Apparatus
ZA.101.4 Materials
ZA.101.5 Preparation of apparatus
ZA.101.6 Procedure
ZA.101.7 Test report
ZA.102 Pilot ignition and stability
ZA.102.1 Scope
ZA.102.2 Principle
ZA.102.3 Apparatus
ZA.102.4 Materials
ZA.102.5 Preparation of apparatus
ZA.102.6 Procedure
ZA.102.7 Test report
ZA.103 Burner ignition
ZA.103.1 Scope
ZA.103.2 Principle
ZA.103.3 Apparatus
ZA.103.4 Materials
ZA.103.5 Preparation of apparatus
ZA.103.6 Procedure
ZA.103.7 Test report
Appendix ZB
Appendix ZC
ZC.8 Temperature hazards test
ZC.8.3 Apparatus
ZC.8.4 Materials
ZC.8.5 Preparation of apparatus
ZC.8.6 Procedure
ZC.8.7 Test report
ZC.101 Determination of CO, CO2, NO2 and formaldehyde — Manufacturer’s rated air throughput
ZC.101.1 Scope
ZC.101.2 Principle
ZC.101.3 Apparatus
ZC.101.4 Materials
ZC.101.5 Preparation of apparatus
ZC.101.6 Procedure
ZC.101.7 Test report
ZC.102 Determination of CO, CO2, NO2 and formaldehyde — Reduced air throughput
ZC.102.1 Scope
ZC.102.2 Principle
ZC.102.3 Apparatus
ZC.102.4 Materials
ZC.102.5 Preparation of apparatus
ZC.102.6 Procedure
ZC.102.7 Test report
ZC.103 Flame characteristics
ZC.103.1 Scope
ZC.103.2 Principle
ZC.103.3 Apparatus
ZC.103.4 Materials
ZC.103.5 Preparation of apparatus
ZC.103.6 Procedure
ZC.103.7 Test report
ZC.104 Burner stability when changing settings test
ZC.104.1 Scope
ZC.104.2 Principle
ZC.104.3 Apparatus
ZC.104.4 Materials
ZC.104.5 Preparation of apparatus
ZC.104.6 Procedure
ZC.104.7 Test report
Cited references in this standard
Gas appliances, Part 0: General requirements
Essential requirements for gas equipment
General-purpose natural gas
Commercial propane and commercial butane for heating purposes
Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 2: Pressure regulators
Content history
DR AS/NZS 5263.1.10:2018