NF EN 12244-1 : 1998

1 Foreword
2 Normative references
3 Definitions
    3.1 Direct gas-fired washing appliance
    3.2 Gases
    3.3 Appliance construction
    3.4 Immobilizing an adjuster or a control
    3.5 Appliance performance
    3.6 Marking of the appliance and packaging
4 Classification
    4.1 Classification of gases
    4.2 Classification of appliances
5 Construction and design requirements
    5.1 General
          5.1.1 Conversion to different gases
          5.1.2 Materials and method of construction
          5.1.3 Screws
          5.1.4 Maintenance and use
          5.1.5 Thermal insulation
          5.1.6 Connections
          5.1.7 Supply of combustion air and evacuation
                  of combustion products
          5.1.8 Soundness
          5.1.9 Water filter
          5.1.10 Checking the state of operation
          5.1.11 Electrical equipment
          5.1.12 Motors
          5.1.13 Operational safety in the event of
                  fluctuation, interruption and restoration
                  of the auxiliary energy
    5.2 Requirements for adjusting, control and safety
          devices
          5.2.1 General
          5.2.2 Automatic shut-off valves
          5.2.3 Multifunctional controls
          5.2.4 Flame supervision devices
          5.2.5 Governors
          5.2.6 Gas rate adjusters
          5.2.7 Automatic burner control systems
          5.2.8 Gas strainers
          5.2.9 Atmosphere sensing device
          5.2.10 Spillage monitoring device
    5.3 Ignition devices
          5.3.1 General
          5.3.2 Ignition device for the main burner
          5.3.3 Ignition burners
    5.4 Ignition burner or start-gas flame establishment
    5.5 Main flame establishment
          5.5.1 Establishment by means of an ignition
                  burner or start-gas flame
          5.5.2 Direct establishment of the main flame
                  eg spark ignition hot surface igniter
    5.6 Burners
    5.7 Thermostats and control of water temperature
          5.7.1 General requirements
          5.7.2 Temperature limiting device
    5.8 Water level control device
    5.9 Clocks and timing devices
    5.10 Pressure test points
    5.11 Mechanical hazards
          5.11.1 General
          5.11.2 Requirements for appliances with an
                  opening dimension exceeding 30 cm and a
                  drum having a volume exceeding 100 dm
    5.12 Appliance stability
6 Operational safety
    6.1 General
          6.1.1 Characteristics of test gases: reference
                  and limit gases
          6.1.2 Conditions for preparation of test gases
          6.1.3 Practical application of test gases
          6.1.4 Test pressures
          6.1.5 Test procedures
          6.1.6 Test room
          6.1.7 Preparation of the appliance
          6.1.8 Test conditions
    6.2 Screws
          6.2.1 Requirements
          6.2.2 Tests
    6.3 Manually operated devices of the automatic
          burner control system
          6.3.1 Requirements
          6.3.2 Tests
    6.4 Mechanical hazards
          6.4.1 General
          6.4.2 Additional requirements for appliances
                  with an opening dimension exceeding
                  30 cm and a drum having a volume
                  exceeding 100 dm
    6.5 Stability of appliances
          6.5.1 Requirements
          6.5.2 Tests
    6.6 Soundness
          6.6.1 Soundness of the gas circuit
          6.6.2 Soundness of the water circuit
          6.6.3 Soundness of the combustion circuit and
                  correct evacuation of the combustion
                  products for type B appliances
    6.7 Nominal heat input
          6.7.1 General
          6.7.2 Requirements
          6.7.3 Tests
    6.8 Heat input of ignition burners
          6.8.1 Requirements
          6.8.2 Tests
    6.9 Burners
          6.9.1 Resistance to overheating
          6.9.2 Escape of unburnt gas
    6.10 Limiting temperature of various parts of the
          appliance
    6.11 Limiting temperature of floor, walls and worktop
    6.12 Limiting temperature of components
    6.13 Motor limiting temperatures
    6.14 Flue gas temperature
    6.15 Ignition, cross-lighting and flame stability
    6.16 Flame supervision devices
    6.17 Governors
    6.18 Atmosphere sensing device
    6.19 Spillage monitoring device
    6.20 Combustion
    6.21 Soot deposition
    6.22 Cyclic operation
    6.23 Temperature limiting device
    6.24 Water level control device
7 Marking
    7.1 Marking of the appliance
    7.2 Marking of the packaging
    7.3 Utilization of symbols on the appliance and
          packaging
    7.4 Instructions
    7.5 Presentation
Tables
1 Classification of gases
2 Characteristics of the test gases
3 Calorific values of the test gases of the third family
4 Test gases corresponding to the appliance categories
5 Test pressure where no pressure couple exists
6 Test pressure where a pressure couple exists
7 Torque values for screws
8 Maximum temperature rise in parts of the appliance
    that are likely to be touched accidentally
9 Shutdown time as a function of the blockage
10 VCO2, N values
11 Symbols of the reference gases
Figures
1 Test flue
2a Test corner for measuring floor and wall temperatures
2b Apparatus for measuring floor and wall temperatures
2c Test board for measuring worktop temperatures
3 Probe for measuring surface temperature
4 Probe for sampling and measuring the temperature of
    the combustion
5 Abnormal draught conditions (type B appliances)
6 Spillage monitoring device (test apparatus)
7 Device for sampling the combustion products above
    the deflector for type A appliances
8 Sampling probe for test flues of diameter equal or
    greater than DN 100
9 Sampling probe for test flues of diameter less than
    DN 100
10 Probe for sampling the combustion products for appliances
    of type B11
Annex A (informative) National situations
    A.1 Categories listed in the body of the standard
          marketed in the different countries
    A.2 Appliance supply pressures corresponding to the
          categories given in A.1
    A.3 Special categories marketed nationally or
          locally and corresponding test gases
    A.4 Test gases corresponding to the special categories
          given in A.3
    A.5 Gas connections in the various countries
    A.6 Water connection conditions in common use in
          the various countries
    A.7 Flue connections in the various countries
    A.8 Equivalence rules
Annex B (normative) Protection against electric shock for
high voltage ignition devices
    B.1 Protection against accessibility to live parts
    B.2 Requirements
    B.3 Test
    B.4 Measurement
    B.5 Protection
Annex C (normative) Description of the sealed room for the
test appliances with atmosphere sensing devices
    C.1 Configuration of the sealed room
    C.2 Soundness of the room
    C.3 Effectiveness of mixing
Annex D (normative) Special national conditions
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other provisions of
EU Directives

Defines the requirements and test procedures for construction, safety and marking of direct gas-fired washing appliances with or without heat exchanger or spin dryer, for types not in excess of a heat input of 20 kW, and those not exceeding a heat input of 20 kW. Not applicable to catalytic combustion appliances, appliances meant for use in locations with special conditions, eg corrosive or explosive atmosphere or appliances for use in vehicles or on board ships or aircraft. Describes only type testing.