AS/NZS 4012:2014
Domestic solid fuel burning appliances - Method for determination of power output and efficiency
Sets out sufficiently comprehensive specifications and instructions to enable all interested organisations with appropriate test facilities to determine the power output and efficiency of solid fuel burning appliances. It is intended that the results of testing to this method will be of use to consumers during selection of solid fuel burning appliances.
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AS/NZS 4012:2014 DOMESTIC SOLID FUEL BURNING APPLIANCES-METHOD FOR DETERMINATION OF POWER OUTPUT AND EFFICIENCY
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.2.1 General
1.2.2 Included appliances
1.2.3 Excluded appliances
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Appliances above 25 kW
1.4.2 Appliance operating instructions
1.4.3 Average burn cycle efficiency
1.4.4 Average efficiency
1.4.5 Batch feed
1.4.6 Built-in appliance
1.4.7 Burn cycle
1.4.8 Burn cycle time
1.4.9 Burn rate
1.4.10 Bypass damper
1.4.11 Calorimeter room
1.4.12 Central heating appliance
1.4.13 Cooking stove appliance
1.4.14 Efficiency (overall efficiency or appliance efficiency)
1.4.15 Fireplace insert appliance
1.4.16 IANZ
1.4.17 Inlet air damper
1.4.18 Maximum average heat output
1.4.19 NATA
1.4.20 Overall average efficiency
1.4.21 Peak power
1.4.22 Shall
1.4.23 Should
1.4.24 Test fuel load
1.5 PRINCIPLE
SECTION 2 APPARATUS
2.1 AMBIENT TEMPERATURE MEASUREMENT SYSTEM
2.2 APPLIANCE TEMPERATURE MEASUREMENT SYSTEM
2.3 WEIGHT DETERMINATION EQUIPMENT
2.4 MASS FLOW MEASUREMENT SYSTEM
2.5 AMBIENT AIR PRESSURE MEASUREMENT SYSTEM
2.6 ANEMOMETER
SECTION 3 TEST ENCLOSURE AND FLUE
3.1 GENERAL
3.2 ROOM INSULATION
3.3 LENGTH OF FLUE
3.4 EXPOSED FLUE WITHIN CALORIMETER ROOM
3.4.1 Freestanding appliances
3.4.2 Fireplace-insert appliances
3.4.3 Built-in appliances
3.5 AIR TEMPERATURES
3.6 AIR PRESSURE
3.7 WALL TEMPERATURES
3.8 AIR FLOW
3.9 CALIBRATION
3.9.1 General
3.9.2 Calorimeter room
3.9.3 Barometer
3.9.4 Anemometer
3.9.5 Weighing instruments
SECTION 4 MEASUREMENT ACCURACY
4.1 TEMPERATURE AND MASS FLOW
4.2 CALORIMETER ROOM SCALES
4.3 UNCERTAINTY OF MEASUREMENT OF EFFICIENCY
SECTION 5 TEST FUEL
5.1 GENERAL
5.2 FUEL CHAMBER USABLE VOLUME
5.3 TEST FUEL LOAD
5.3.1 General
5.3.2 Firewood test fuel load mass
5.3.3 Coal test fuel load mass
5.3.4 Combination firewood and coal fuels
5.4 FIREWOOD PIECE DIMENSIONS
5.4.1 General
5.4.2 Length range
5.4.3 Cross-section
5.4.4 Calculation of number of fuel pieces in a test fuel load
5.4.5 Firewood piece length
5.5 TEST FUEL REQUIREMENTS FOR AUSTRALIA
SECTION 6 TEST PROCEDURE
6.1 PREPARATION BEFORE TESTING
6.1.1 Appliance air flow test
6.1.2 Conditioning burn
6.1.3 Post-conditioning adjustment
6.1.4 Ash
6.1.5 Fire lighting
6.1.6 Pretest burn cycle
6.2 FUEL LOADING
6.2.1 General
6.2.2 Firewood loading geometry
6.2.3 Coal fuel-loading geometry
6.2.4 Mixed firewood and coal fuel-loading geometry
6.3 BURN RATES
6.4 BURN CYCLE
6.5 NUMBER OF BURN CYCLES
6.6 DATA-RECORDING INTERVAL
6.7 OPERATION OF THE APPLIANCE
6.7.1 Baffle bypass damper
6.7.2 Burn-rate control
6.7.3 Fans
6.7.4 Other controls
6.7.5 Automatic controls
6.8 APPLIANCES WITH A WATER-HEATING FACILITY
6.9 DUCTED APPLIANCES
6.10 POST-BURN APPLIANCE AIR-FLOW TEST
SECTION 7 CALCULATION AND REPORTING OF RESULTS
7.1 CALCULATIONS
7.1.1 Average power
7.1.2 Heat output
7.1.3 Energy input
7.1.4 Efficiency
7.1.5 Fuel consumption rate
7.2 REPORT
SECTION 8 MARKING
8.1 GENERAL
8.2 COMPULSORY PERMANENT MARKING
8.3 FUEL TYPES
8.4 ADDITIONAL MARKING
8.5 RETESTING EXEMPTION
SECTION 9 MINIMUM ALLOWABLE HEATING EFFICIENCY LEVEL
9.1 GENERAL
9.1.1 For Australia
9.1.2 For New Zealand
9.2 VALID TESTS
APPENDIX A - FIREWOOD DETERMINATION-WORKED EXAMPLE
A1 SCOPE
A2 WORKED EXAMPLE-FIREWOOD DETERMINATION
APPENDIX B - METHOD FOR DETERMINATION OF WATER HEATING HEAT OUTPUT AND POWER
B1 SCOPE
B2 REQUIREMENTS
B3 EQUIPMENT AND FACILITES
B3.1 Water temperature measurement system
B3.2 Water flow measurement system
B3.3 Water supply
B4 INSTALLATION
B5 PROCEDURE
B6 CALCULATION
B7 REPORTING
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References
Domestic solid fuel burning appliances - Design and construction
Domestic solid fuel burning appliances - Method for determination of flue gas emission
Related Information
Resource Management (National Environmental Standards for Air Quality) Regulations 2004
Ministry: Ministry for the Environment
Section: 24(2)(a)
Citation context:The thermal efficiency must be calculated in accordance with (a) the method specified in Australian/New Zealand Standard AS/NZS 4012:2014, Domestic solid fuel burning appliances—Method for determination of power output and efficiency; or ...
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AS/NZS 4012:2014 DOMESTIC SOLID FUEL BURNING APPLIANCES-METHOD FOR DETERMINATION OF POWER OUTPUT AND EFFICIENCY
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.2.1 General
1.2.2 Included appliances
1.2.3 Excluded appliances
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Appliances above 25 kW
1.4.2 Appliance operating instructions
1.4.3 Average burn cycle efficiency
1.4.4 Average efficiency
1.4.5 Batch feed
1.4.6 Built-in appliance
1.4.7 Burn cycle
1.4.8 Burn cycle time
1.4.9 Burn rate
1.4.10 Bypass damper
1.4.11 Calorimeter room
1.4.12 Central heating appliance
1.4.13 Cooking stove appliance
1.4.14 Efficiency (overall efficiency or appliance efficiency)
1.4.15 Fireplace insert appliance
1.4.16 IANZ
1.4.17 Inlet air damper
1.4.18 Maximum average heat output
1.4.19 NATA
1.4.20 Overall average efficiency
1.4.21 Peak power
1.4.22 Shall
1.4.23 Should
1.4.24 Test fuel load
1.5 PRINCIPLE
SECTION 2 APPARATUS
2.1 AMBIENT TEMPERATURE MEASUREMENT SYSTEM
2.2 APPLIANCE TEMPERATURE MEASUREMENT SYSTEM
2.3 WEIGHT DETERMINATION EQUIPMENT
2.4 MASS FLOW MEASUREMENT SYSTEM
2.5 AMBIENT AIR PRESSURE MEASUREMENT SYSTEM
2.6 ANEMOMETER
SECTION 3 TEST ENCLOSURE AND FLUE
3.1 GENERAL
3.2 ROOM INSULATION
3.3 LENGTH OF FLUE
3.4 EXPOSED FLUE WITHIN CALORIMETER ROOM
3.4.1 Freestanding appliances
3.4.2 Fireplace-insert appliances
3.4.3 Built-in appliances
3.5 AIR TEMPERATURES
3.6 AIR PRESSURE
3.7 WALL TEMPERATURES
3.8 AIR FLOW
3.9 CALIBRATION
3.9.1 General
3.9.2 Calorimeter room
3.9.3 Barometer
3.9.4 Anemometer
3.9.5 Weighing instruments
SECTION 4 MEASUREMENT ACCURACY
4.1 TEMPERATURE AND MASS FLOW
4.2 CALORIMETER ROOM SCALES
4.3 UNCERTAINTY OF MEASUREMENT OF EFFICIENCY
SECTION 5 TEST FUEL
5.1 GENERAL
5.2 FUEL CHAMBER USABLE VOLUME
5.3 TEST FUEL LOAD
5.3.1 General
5.3.2 Firewood test fuel load mass
5.3.3 Coal test fuel load mass
5.3.4 Combination firewood and coal fuels
5.4 FIREWOOD PIECE DIMENSIONS
5.4.1 General
5.4.2 Length range
5.4.3 Cross-section
5.4.4 Calculation of number of fuel pieces in a test fuel load
5.4.5 Firewood piece length
5.5 TEST FUEL REQUIREMENTS FOR AUSTRALIA
SECTION 6 TEST PROCEDURE
6.1 PREPARATION BEFORE TESTING
6.1.1 Appliance air flow test
6.1.2 Conditioning burn
6.1.3 Post-conditioning adjustment
6.1.4 Ash
6.1.5 Fire lighting
6.1.6 Pretest burn cycle
6.2 FUEL LOADING
6.2.1 General
6.2.2 Firewood loading geometry
6.2.3 Coal fuel-loading geometry
6.2.4 Mixed firewood and coal fuel-loading geometry
6.3 BURN RATES
6.4 BURN CYCLE
6.5 NUMBER OF BURN CYCLES
6.6 DATA-RECORDING INTERVAL
6.7 OPERATION OF THE APPLIANCE
6.7.1 Baffle bypass damper
6.7.2 Burn-rate control
6.7.3 Fans
6.7.4 Other controls
6.7.5 Automatic controls
6.8 APPLIANCES WITH A WATER-HEATING FACILITY
6.9 DUCTED APPLIANCES
6.10 POST-BURN APPLIANCE AIR-FLOW TEST
SECTION 7 CALCULATION AND REPORTING OF RESULTS
7.1 CALCULATIONS
7.1.1 Average power
7.1.2 Heat output
7.1.3 Energy input
7.1.4 Efficiency
7.1.5 Fuel consumption rate
7.2 REPORT
SECTION 8 MARKING
8.1 GENERAL
8.2 COMPULSORY PERMANENT MARKING
8.3 FUEL TYPES
8.4 ADDITIONAL MARKING
8.5 RETESTING EXEMPTION
SECTION 9 MINIMUM ALLOWABLE HEATING EFFICIENCY LEVEL
9.1 GENERAL
9.1.1 For Australia
9.1.2 For New Zealand
9.2 VALID TESTS
APPENDIX A - FIREWOOD DETERMINATION-WORKED EXAMPLE
A1 SCOPE
A2 WORKED EXAMPLE-FIREWOOD DETERMINATION
APPENDIX B - METHOD FOR DETERMINATION OF WATER HEATING HEAT OUTPUT AND POWER
B1 SCOPE
B2 REQUIREMENTS
B3 EQUIPMENT AND FACILITES
B3.1 Water temperature measurement system
B3.2 Water flow measurement system
B3.3 Water supply
B4 INSTALLATION
B5 PROCEDURE
B6 CALCULATION
B7 REPORTING
AS/NZS 4012:2014
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.