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AS/NZS 5263.1.11:2020


Gas appliances, Part 1.11: Small gas engine driven appliances

Specifies particular requirements for small gas fuelled spark ignition reciprocating internal combustion engine driven appliances, such as air conditioners, heat pumps, electricity generators and gas compressors, for application in conjunction with AS/NZS 5263.0.
Published: 20/11/2020
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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 Normative references
1.3 Terms and definitions
1.4 Test methods
2 Design and construction
2.1 Scope
2.2 General design requirements
2.2.3 Fitting of flame safeguards
2.2.101 Supports for appliance pipework
2.2.102 Crankcase gas venting
2.2.103 Batteries Battery location Battery compartment ventilation
2.2.104 Mechanical ventilation failure
2.2.105 Failure of cooling system
2.3 Materials
2.3.5 Components required to be placed in a flame
2.3.101 Flueway insulation
2.4 Design for assembly and installation
2.4.101 Provision of hose assembly
2.5 Design for maintenance
2.5.2 Accessibility for replacement
2.5.7 Viewing of flames
2.6 Design for operation
2.6.2 Proving of burner or pilot ignition
2.6.3 Burner controls
2.6.4 Primary guards openings
2.6.5 Touchability of flames
2.6.6 Air filters
2.6.101 Guarding against temperature hazards
2.6.102 Protection against moving parts
2.6.103 Openings in and around guards
2.7 Control and safety devices
2.7.2 Pilot shut off
2.7.3 Main burner shut off provision
2.7.4 Programmable electronic systems
2.7.101 Engine shutdown detection
2.7.102 Activation of automatic shut off valves
2.7.103 Controls accessibility
2.7.104 Engine isolation and stopping device
2.7.105 Overspeed protection
2.8 Gas train
2.8.2 Provision of pressure regulators
2.8.4 Control of bleed lines
2.8.5 Main burner automatic shut off valves
2.8.9 Pilot gas filters
2.8.14 Classification of safety shut off valves
2.8.101 Automatic shut off valve requirements
2.8.102 Protection of appliance gas valve train from vibration
2.9 Combustion air and flue systems
2.9.1 Design of air entry and combustion product discharge
2.9.2 Flue terminal openings
2.9.3 Flue terminal and draught diverter construction
2.9.4 Draught diverters
2.9.5 Design of flue connection
2.9.6 Automatic flue dampers
2.9.101 Flueway clearances
2.9.102 Combustion air inlet and exhaust terminal openings
2.9.103 Exhaust terminal construction
2.9.104 Flueing of indoor appliances
2.10 Fan assisted combustion systems
2.11 Burners and ignition systems
2.12 Components
2.13 Cylinders and cylinder compartments
2.13.4 Separation of cylinder compartment
2.13.6 Protection from spillover
2.14 Markings
2.14.2 Permanent markings on appliances
2.14.4 Marking of flash ignition tubes
2.14.5 Indication of function
2.14.10 Identification of injectors
2.14.12 Label on guard
2.14.101 Markings on guards
2.15 Instructions
2.15.2 Installation Instructions supplied with the appliance Warning statement
2.15.3 Operation General Warning statements
2.15.4 Maintenance Servicing instructions and maintenance schedule
3 Preliminary tests — Line gases
3.1 General
3.2 Preparation for testing
3.2.101 Load for appliance testing
3.3 Gas leakage
3.3.101 Unburnt gas release from the engine system
3.4 Gas consumption
3.4.1 Tolerance on determined gas consumption
3.4.2 Determined gas consumption of permanent pilots
3.5 Gas pressure regulators
3.6 Ignition and safety shut off systems
3.6.1 General requirements Pilot light back Aerated pilot — Blocked air Ignition at reduced pilot rate Ignition at reduced supply pressure Multi-port pilots Means of ignition other than permanent pilot Holding time of thermoelectric flame safeguard Flame tracking at ignition Cessation of ignition spark Proving of start flame Self-check for safety shut off systems Flame failure Main flame establishment period for burners with interrupted and intermittent pilot Shut off time for safety shut off system Interrupted pilot Maintenance of ignition spark Low gas supply pressure cut-off Operation at reduced supply pressure
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 gas flow rate Ignition cycles prior to lockout (no flame established) Reignition cycles after flame failure Start flame proving period Start attempts prior to lockout (no combustion established) Engine restart after abnormal stop
3.7 Ignition of draped fabric
4 Tests under limiting conditions
4.1 General
4.2 CO/CO2 ratio limits for any independent surface combustion burner — Underload
4.3 CO/CO2 ratio limits for any independent burner — Overload
4.4 CO/CO2 ratio limits for permanent pilots — Overload
4.5 Flame characteristics at maximum and minimum limiting conditions
4.6 Burner ignition at maximum and minimum limiting conditions
4.7 Delayed ignition at maximum and minimum limiting conditions
4.8 Reignition at turndown under draught conditions
4.9 Pilot ignition and stability ignition at maximum and minimum limiting conditions
4.10 Burner stability when changing setting
4.11 Unburnt gas release from burner system
4.12 Blocked flueway terminal
4.13 Case pressure test
4.14 Effect of opening and closing doors at turndown condition
4.15 Sooting — Luminous effect appliances
4.16 Burner interference at ignition or during combustion
4.101 Engine starting at maximum and minimum limiting conditions
5 Performance specifications
5.1 Combustion air supply
5.1.1 Combustion air flow proving
5.1.2 Obstruction of air inlets with fan assisted combustion systems
5.2 Flue operation
5.2.1 Diversion of combustion products
5.2.2 Spillage of combustion products
5.2.3 Performance with updraught, downdraught and blocked flue
5.2.5 Flue gas temperatures
5.2.7 Safety shutdown — Combustion product limits
5.2.8 Automatic flue damper devices
5.3 Condensate
5.3.1 Control of flue gas condensate
5.4 Temperature hazards
5.4.2 Appliance operating conditions
5.4.6 Temperature limits — Appliance safety Flueway insulation Batteries temperature LP Gas cylinders
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 Engine flueway guarding temperature limit
5.5 Heat resistance of appliance
5.5.1 Resistance to temperatures Test conditions
5.5.2 Resistance to temperatures — Burner light back
5.5.3 Minimum temperature requirements of heat exchangers during warming-up period
5.6 Durability
5.6.101 Appliance deterioration
5.7 Electrical supply variation or failure
5.7.1 Response to electrical supply variation or 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
5.11.2 Strength of flue connection
5.11.7 Attachment of primary guard
5.11.8 Strength of primary guard incorporating glass or similar material(s)
5.11.101 Explosion resistance for flueway
5.11.102 Attachment of guards
5.11.103 Strength of guards incorporating glass
5.13 Vitiation and emissions
5.13.101 Carbon monoxide emissions
5.101 Noise of operation
5.102 Spit back
5.103 Battery compartment
Appendix AA
Appendix ZA
ZA.2 Gas consumption test
ZA.2.1 Scope
ZA.2.2 Principle
ZA.2.3 Apparatus
ZA.2.6 Procedure
ZA.2.7 Test report
ZA.3 Gas pressure regulators test
ZA.3.3 Apparatus
ZA.3.6 Procedure
ZA.9 Shut off time for safety shut off system test
ZA.9.1 Scope
ZA.9.6 Procedure
ZA.10 Ignition gas flow rate (delayed ignition) test
ZA.10.1 Scope
ZA.10.2 Principle
ZA.10.5 Preparation of apparatus
ZA.10.6 Procedure
ZA.10.7 Test report
ZA.11 Ignition cycles — Prior to lockout/after flame failure test
ZA.11.1 Scope
ZA.11.2 Principle
ZA.11.3 Apparatus
ZA.11.6 Procedure
ZA.11.7 Test report
ZA.101 Unburnt gas release from engine system test
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 Operation at reduced supply pressure test
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
Appendix ZB
ZB.101 Engine starting at maximum and minimum limiting conditions
ZB.101.1 Scope
ZB.101.2 Principle
ZB.101.3 Apparatus
ZB.101.4 Materials
ZB.101.5 Preparation of apparatus
ZB.101.6 Procedure
ZB.101.7 Test report
Appendix ZC
ZC.1 Combustion air supply test
ZC.1.1 Scope
ZC.1.2 Principle
ZC.1.3 Apparatus
ZC.1.6 Procedure
ZC.1.7 Test report
ZC.5 Flue gas temperatures test
ZC.5.1 Scope
ZC.5.2 Principle
ZC.5.3 Apparatus
ZC.5.5 Preparation of apparatus
ZC.5.6 Procedure
ZC.5.7 Test report
ZC.7 Blocked condensate drain test
ZC.7.7 Test report
ZC.8 Temperature hazards test
ZC.8.5 Preparation of apparatus
ZC.8.6 Procedure
ZC.8.7 Test report
ZC.9 Resistance to temperatures — Overload gas consumption test
ZC.9.6 Procedure
ZC.9.7 Test report
ZC.15 Electrical supply variation test
ZC.15.7 Test report
ZC.17 Rain test for room sealed and outdoor appliances
ZC.17.5 Preparation of apparatus
ZC.17.6 Procedure
ZC.17.7 Test report
ZC.22 Strength of flue connection test
ZC.22.1 Scope
ZC.22.2 Principle
ZC.22.3 Apparatus
ZC.22.5 Procedure
ZC.22.5.1 For vertical load on an engine with a vertical exhaust extension connection
ZC.22.5.2 For vertical load on an engine with horizontal exhaust extension connection
ZC.101 Battery hydrogen accumulation test
ZC.101.1 Scope
ZC.101.2 Principle
ZC.101.3 Apparatus
ZC.101.4 Preparation of apparatus
ZC.101.5 Procedure
ZC.101.6 Test report
ZC.102 Performance when subjected to spit back test
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 Flueway strength test
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 Carbon monoxide concentration 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
ZC.105 Leakage of combustion products test
ZC.105.1 Scope
ZC.105.2 Principle
ZC.105.3 Apparatus
ZC.105.4 Materials
ZC.105.5 Preparation of apparatus
ZC.105.6 Procedure
ZC.105.7 Test report
ZC.106 Guard attachment test
ZC.106.1 Scope
ZC.106.2 Principle
ZC.106.3 Apparatus
ZC.106.4 Preparation of apparatus
ZC.106.5 Procedure
ZC.106.6 Test report
Cited references in this standard
[Pending Revision]
Hose and hose assemblies for liquefied petroleum gases (LP Gas), natural gas and town gas
Gas appliances, Part 0: General requirements
Automatic electrical controls — Part 1: General requirements
Reciprocating internal combustion engine driven alternating current generating sets — Part 13: Safety
UL 2200
Standard for Stationary Engine Generator Assemblies
Content history
DR AS/NZS 5263.1.11:2019