NS EN 1020 : 2009

Foreword
1 Scope
2 Normative references
3 Definitions
       3.1 Appliance and its constituent parts
       3.2 Adjusting, control and safety devices
       3.3 Operation of the appliance
       3.4 Gases
       3.5 Conditions of operation and measurement
       3.6 Marking of the appliance and packaging
       3.7 Classification
              3.7.1 Classification of gases
              3.7.2 Classification of appliances
4 Construction and design requirements
       4.1 General
              4.1.1 Conversion to different gases
              4.1.2 Materials and method of construction
              4.1.3 Accessibility for maintenance and use
              4.1.4 Thermal insulation
              4.1.5 Gas connection
              4.1.6 Soundness
              4.1.7 Supply of combustion air and evacuation of
                     combustion products
              4.1.8 Supply and distribution of air for space
                     heating
              4.1.9 Checking the state of operation
              4.1.10 Electrical equipment
              4.1.11 Operational safety in the event of
                     fluctuation, interruption and restoration
                     of the auxiliary energy
              4.1.12 Motors and fans
       4.2 Adjusting, control and safety devices
              4.2.1 General
              4.2.2 Gas rate adjusters and range-rating devices
              4.2.3 Aeration adjusters
              4.2.4 Manual controls
              4.2.5 Governors
              4.2.6 Multifunctional controls
              4.2.7 Flame supervision devices
              4.2.8 Automatic shut-off valves
              4.2.9 Burner control systems
              4.2.10 Gas strainers
       4.3 Ignition devices
              4.3.1 General
              4.3.2 Ignition device for the main burner
              4.3.3 Ignition burners
       4.4 Transportation of combustion air and/or
              flue gases
              4.4.1 Type B14 appliances
              4.4.2 All appliances except Type B14
       4.5 Flame supervision system
              4.5.1 Type B14 appliances
              4.5.2 All appliances except Type B14
       4.6 Start-gas flame establishment
              4.6.1 Type B14 appliances
              4.6.2 All appliances except Type B14
       4.7 Main flame establishment
              4.7.1 Type B14 appliances
              4.7.2 All appliances except Type B14
       4.8 Main burner
       4.9 Facility for remote control
       4.10 Thermostats and control of air temperature
              4.10.1 General requirements
              4.10.2 Overheat cut-off device
              4.10.3 Overheat control device
              4.10.4 Overheat cut-off control device
              4.10.5 Fans delay controls
              4.10.6 Sensors
       4.11 Gas pressure test points
       4.12 Combustion chamber pressure reliefs
       4.13 Facilities for commissioning and testing
       4.14 Additional requirements for appliances designed
              for outdoor installation
              4.14.1 General
              4.14.2 Air inlets
              4.14.3 Access panels and doors
              4.14.4 Dimensions of openings
              4.14.5 Fixing screws
5 Operational requirements
       5.1 Safety of operation
              5.1.1 Soundness
              5.1.2 Heat inputs
              5.1.3 Limiting temperatures
              5.1.4 Ignition, cross-lighting, flame stability
              5.1.5 Combustion
              5.1.6 Overheat cut-off device
              5.1.7 Heat exchanger thermal cycling
              5.1.8 Effectiveness of the pre-purge
              5.1.9 Weather resistance
       5.2 Efficiency
6 Test methods
       6.1 General
              6.1.1 Characteristics of test gases:
                     reference and limit gas
              6.1.2 Conditions for preparation of the test
                     gases
              6.1.3 Practical application of test gases
              6.1.4 Test pressures
              6.1.5 Test procedures
              6.1.6 General test conditions
       6.2 Construction and design
              6.2.1 Automatic burner control systems
                     (manually operated devices)
              6.2.2 Ignition opening time
              6.2.3 Extinction safety time
              6.2.4 Safety time
       6.3 Safety of operation
              6.3.1 Soundness
              6.3.2 Heat inputs
              6.3.3 Limiting temperatures
              6.3.4 Ignition, cross-lighting, flame stability
              6.3.5 Combustion
              6.3.6 Overheat cut-off device
              6.3.7 Heat exchanger thermal cycling
              6.3.8 Effectiveness of the pre-purge
              6.3.9 Weather resistance
       6.4 Efficiency
              6.4.1 General conditions of test
              6.4.2 Test conditions
              6.4.3 Test procedure
              6.4.4 Accuracy of measurement
              6.4.5 Calculation of efficiency
              6.4.6 Supplementary test for appliances with
                     a modulating or high/low control
7 Marking and instructions
       7.1 Marking of the appliance
              7.1.1 Description
              7.1.2 Data plate
              7.1.3 Other marking
       7.2 Marking of the packaging
       7.3 Utilization of symbols on the appliance and
              packaging
              7.3.1 Electrical supply
              7.3.2 Type of gas
              7.3.3 Gas supply pressure
              7.3.4 Country of destination
              7.3.5 Category
              7.3.6 Other information
              7.3.7 Emissions
       7.4 Instructions
              7.4.1 General
              7.4.2 Technical instructions for installation and
                     adjustment
              7.4.3 Instructions for use and maintenance
              7.4.4 Instructions for servicing
              7.4.5 Lighting instructions
              7.4.6 Instructions for conversion
Annex A (informative) National situations
Annex B (normative) Classification according to the
          evacuation of the combustion products
Annex C (normative) Requirements and test methods for
          separate air supply and combustion products
          evacuation ducts
Annex D (normative) Requirements for high-voltage
          ignition circuits
Annex E (informative) Facilities for commissioning and
          testing (see 4.13)
Annex F (informative) Means of identification of the
          various types of gas in force in the various
          countries
Annex G (informative) Requirements in EN 1020 which
          relate to the design and construction of forced
          draught burners covered in EN 676:1996
Annex H (informative) A-deviations
Annex J (normative) Special national conditions
Annex K (informative) Calculation of conversions of NO[x]
Annex ZA (informative) Clauses of this European Standard
          addressing requirements or provisions of
          EU Directives

Describes the requirements and test methods for the safety and efficiency of non-domestic gas-fired air heaters having a fan to assist the transportation of combustion air and/or flue gases, hereafter referred to as "appliances".