Standard
UPDATE AVAILABLE
AS 4558-2011
[Superseded]Decorative gas log and other fuel effect appliances
The objective of this Standard is to provide manufacturers, designers, regulatory authorities, testing laboratories and similar organizations with uniform minimum requirements for the safety, performance and use of decorative gas log and other fuel effect appliances.
Published: 27/01/2011
Pages: 138
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Classification
1.3 Referenced documents
1.4 Definitions
2 Design and construction
2.1 General
2.1.1 Preliminary specification
2.1.2 Physical inspection
2.1.3 Certification of safety components
2.1.4 Programmable electronic systems
2.1.5 Manual shut off gas valves
2.1.6 Classification of safety shut-off valves
2.1.7 Power failure
2.1.8 Burners with granular media
2.1.9 Positioning of logs or coals
2.1.10 Tray type burners—prevention of spillage
2.1.11 Tray type burners—turndown limits
2.1.12 Sharp edges
2.1.13 Handles and knobs
2.1.14 Continuity of satisfactory operation
2.1.15 Insulation
2.1.16 Protection of vitreous enamel
2.1.17 Means of support
2.1.18 Compliance in alternative forms
2.1.19 Means of ignition for room sealed appliances
2.1.20 Locking means for adjusting devices
2.1.21 Fitting of primary guard
2.1.22 Means for gas pressure measurement
2.1.23 Draught diverters for Type 2 appliances
2.2 Materials and standards
2.2.1 General
2.2.2 Materials containing asbestos
2.2.3 Materials in contact with gas
2.2.4 Zinc based alloys
2.2.5 Components required to be placed in a flame
2.2.6 Spark electrodes
2.2.7 Protection of aluminium tubing
2.2.8 Thermal insulation
2.2.9 Compression fittings
2.3 Electrical systems
2.3.1 Connection to the mains electrical supply
2.3.2 Motor bearings suitability
2.4 Installation requirements
2.4.1 Fixing of gas inlet connection
2.4.2 Gas inlet connection thread
2.4.3 Access to connections
2.5 Maintenance requirements
2.5.1 Dismantling and replacement by the user
2.5.2 Insertion and removal of gas injectors
2.5.3 Assembly and attachment of handles, dials and pointers
2.5.4 Accessibility for adjustment
2.5.5 Accessibility for replacement
2.5.6 Screwed connections
2.5.7 Inaccessible nuts or bolts
2.6 Pressure regulators
2.6.1 Provision of a pressure regulating device
2.6.2 Positioning of pressure regulators
2.7 Gas controls and safety shut-off systems
2.7.1 General
2.7.2 Accessibility by the user
2.7.3 Accidental change of settings of valves, dials and pointers
2.7.4 Provision of flame safeguard
2.7.5 Safety system for Type 1 appliances
2.7.6 Automatic reignition means
2.7.7 Safety controls for exposed burners
2.7.8 Main burner automatic shut-off valve
2.8 Combustion air supply and controls
2.8.1 Combustion air supply equipment
2.8.2 Combustion air flow proving interlock
2.8.3 Prevention of combustion air backflow
2.9 Ignition, pilots and main burners
2.9.1 Burners with remote manual ignition
2.9.2 Burners with direct manual ignition
2.9.3 Prevention of injury at ignition
2.9.4 Manually operated burners in an enclosed compartment
2.9.5 Burners interconnected by flues or passages
2.9.6 Means for turning off pilot burner gas supply
2.9.7 Viewing of flames
2.9.8 Proving of burner or pilot ignition
2.9.9 Positive location of flash lighting tubes
2.9.10 Support of pilots, igniters and flame sensing devices
2.9.11 Location of burner mixing tubes
2.9.12 Burner supports
2.9.13 Fixing of gas manifolds
2.9.14 Protection of ports and injectors
2.9.15 Restriction on gauze over primary air ports
2.9.16 Pilot gas filters
2.9.17 Aeration adjustment for universal LP Gas appliances
2.9.18 Securing of removable burner components
2.10 Flueing requirements
2.10.1 Design of air entry and combustion product discharge
2.10.2 Design of flue connection
2.10.3 Flue terminal and draught diverter construction
2.10.4 Flue terminal openings
2.11 Markings and labels
2.11.1 Indication of function
2.11.2 Markings on packaging or appliance
2.11.3 Gas type label
2.11.4 Gas type colour code
2.11.5 Identification of injectors
2.11.6 Marking of fans
2.11.7 Markings on appliances
2.11.8 Marking of doors and covers
2.11.9 Warning label regarding removing of components
2.11.10 Flue terminal marking
2.11.11 Markings for primary guards
2.11.12 Appliances not protected by primary guards
2.11.13 Flash lighting tubes
2.12 Instructions
2.12.1 Documents remaining with user
2.12.2 Installation
2.12.2.1 General
2.12.2.2 Console appliances
2.12.2.3 Built-in appliances
2.12.3 Operating
2.12.3.1 General
2.12.3.2 Safety warnings
2.12.3.2.1 General
2.12.3.2.2 Appliances fitted with primary guards
2.12.4 Servicing
2.12.5 Inclusion of warning to prohibit unauthorized servicing
3 Preliminary tests—Line gases
3.1 General requirements
3.1.1 Introduction
3.1.2 Test gases
3.1.3 Appliances designed for various flue configurations
3.1.4 Appliances with granular media
3.2 Preparation for testing
3.2.1 Electrical safety requirements
3.2.2 Setting up appliance for testing
3.2.3 Appliance regulators not to be removed during testing
3.2.4 Protection from accidental draughts
3.2.5 Prevention of gas rate variation
3.2.6 Gas pressure and gas volume test equipment
3.3 Primary guards
3.3.1 Primary guard attachment
3.3.2 Primary guard openings
3.3.3 Protection from contact with the heat source
3.3.4 Fabric drape test
3.3.5 Impact resistance
3.3.6 Surface finish
3.4 Gas leakage
3.4.1 Gas circuit soundness
3.4.2 Control of bleed line gas
3.5 Gas consumption
3.5.1 Tolerance on determined gas consumption
3.5.2 Determined gas consumption of permanent pilots
3.6 Gas pressure regulators
3.7 Ignition and safety shut-off systems
3.7.1 Requirements applicable to all
3.7.1.1 Aerated pilots
3.7.1.2 Ignition at reduced pilot rate
3.7.1.3 Means of ignition other than permanent pilot
3.7.1.4 Multi-port pilots
3.7.1.5 Holding time for thermoelectric flame safeguard
3.7.1.6 Flame safeguard required
3.7.1.7 Flame travel at ignition
3.7.1.8 Cessation of ignition spark
3.7.1.9 Commencement of ignition after purge period
3.7.1.10 Proving of start flame
3.7.1.11 Self-check for safety shut-off systems
3.7.1.12 Flame failure
3.7.1.13 Flame establishment period for intermittent pilot
3.7.1.14 Shut-off time for safety shut-off system
3.7.1.15 Interrupted pilot
3.7.2 Automatic burner ignition systems—Additional requirements
3.7.2.1 Atmospheric burners
3.7.2.1.1 Start flame establishment period
3.7.2.1.2 Ignition gas flow rate
3.7.2.1.3 Start flame proving period
3.7.2.1.4 Number of reignition attempts
3.7.2.2 Forced or induced draught burners
3.7.2.2.1 Ignition gas flow rate
3.7.2.2.2 Start flame proving period
3.7.2.2.3 Number of re-ignition attempts
3.7.2.2.4 Pre-ignition purge period
4 Limit gas tests
4.1 General
4.2 CO/CO2 ratio limits for any independent 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 abnormality
4.6 Burner ignition at maximum and minimum limiting conditions
4.7 Delayed ignition at maximum and minimum limiting conditions
4.8 Flame stability to draught
4.9 Noise of extinction
4.10 Burner stability when changing setting
4.11 Pilot ignition and stability at maximum and minimum limiting conditions
4.12 Effect of opening and closing doors at turndown condition
4.13 Unburnt gas release from burner system
4.14 Burner interference at ignition or during combustion
4.15 Case pressure
4.16 Sooting—Luminous effect appliances
5 Performance tests
5.1 General
5.2 Flue operation
5.2.1 Spillage of combustion products—Type 1
5.2.2 Spillage of combustion products—Type 2
5.2.3 Performance with updraught, downdraught and blocked flue
5.2.4 Flue gas temperatures
5.3 Condensation
5.3.1 Control of flue gas condensate
5.3.2 Condensate interference with combustion
5.4 Combustion air supply
5.4.1 Combustion air flow proving
5.4.2 Obstruction of air inlets on appliances with fan assisted combustion systems
5.4.3 Power failure
5.4.4 Response to electrical power variation or failure
5.5 Temperature hazards
5.5.1 Test conditions
5.5.2 Surrounding surfaces—Temperature limits
5.5.3 Personal safety—Temperature limits
5.5.3.1 Surfaces intended to be handled
5.5.3.2 Surfaces likely to be accidentally touched
5.5.3.3 Surfaces not protected by a primary guard within 25 mm of the working surface
5.5.3.4 Primary guard temperature limit
5.5.4 Appliance safety—Temperature limits
5.5.4.1 Bodies of gas valves, thermostats, etc.
5.5.4.2 Components containing non-metallic diaphragms
5.5.4.3 Body of a clock or timer
5.5.4.4 Main gas and pilot lines susceptible to sulphide attack
5.5.4.5 Flexible hoses
5.5.4.6 Joints sealed with jointing materials
5.5.4.7 Glass components
5.6 Heat resistance
5.6.1 Resistance to temperatures—Overload conditions
5.6.2 Resistance to temperatures—Burners lit back
5.7 Vitiation and emissions tests
5.7.1 Operation of safety system
5.7.2 Emissions with safety system inoperative
5.7.3 CO/CO2 ratio at the manufacturer’s specified test point pressure
5.8 Strength and stability
5.8.1 Bearing pressure of floor mounted appliances
5.8.2 Strength of flue connection
5.9 Wind test—Room sealed appliances
5.9.1 Power flued appliances
5.9.2 Sealing of room sealed appliances
5.9.3 Failure of the fan
5.9.4 Pilot burner ignition under wind conditions
5.9.5 Pilot burner stability under wind conditions
5.9.6 Main burner ignition under wind conditions
5.9.7 Flame safeguard operation under wind conditions
5.9.8 Appliance operation under wind conditions
5.9.9 Appliance safety under wind conditions
5.10 Rain test for room sealed appliances
5.11 Linting tests
5.11.1 Appliance operation under linting conditions
5.11.2 Protection of fan and motor bearings
5.12 Specifications
Appendix A
Appendix B
B1 M.O.T. 2.2.4 (c)—Zinc alloy test
B1.1 Scope
B1.2 Principle
B1.3 Apparatus
B1.4 Procedure
B1.5 Result
B2 M.O.T. 2.11—Markings and labels
B2.1 Scope
B2.2 Principle
B2.3 Apparatus
B2.4 Materials
B2.5 Procedure
B2.6 Result
B3 M.O.T. 3.3.1—Determination of integrity of the primary guard
B3.1 Scope
B3.2 Principle
B3.3 Apparatus
B3.4 Preparation of apparatus
B3.5 Procedure
B3.6 Result
B4 M.O.T. 3.3.4—Fabric drape test
B4.1 Scope
B4.2 Principle
B4.3 Apparatus
B4.4 Materials
B4.5 Preparation of apparatus
B4.6 Procedure
B4.7 Result
B5 M.O.T. 3.3.5—Determination of the resistance of primary guards to impact
B5.1 Scope
B5.2 Principle
B5.3 Apparatus
B5.4 Preparation of apparatus
B5.5 Procedure
B5.6 Result
B6 M.O.T. 3.4.1—Gas leakage
B6.1 Scope
B6.2 Principle
B6.3 Apparatus
B6.4 Materials
B6.5 Preparation of apparatus
B6.6 Procedure
B6.7 Result
B7 M.O.T. 3.5.1/2—Gas consumption
B7.1 Scope
B7.2 Principle
B7.3 Apparatus
B7.4 Materials
B7.5 Preparation of apparatus
B7.6 Procedure
B7.7 Result
B8 M.O.T. 3.6—Gas pressure regulator performance
B8.1 Scope
B8.2 Principle
B8.3 Apparatus
B8.4 Materials
B8.5 Preparation of apparatus
B8.6 Procedure
B8.7 Result
B9 M.O.T. 3.7.1.1/3.7.1.4—Ignition—Aerated pilots
B9.1 Scope
B9.2 Principle
B9.3 Apparatus
B9.4 Materials
B9.5 Preparation of apparatus
B9.6 Procedure
B9.7 Result
B10 M.O.T. 3.7.1.2/3.7.1.4—Ignition of a burner protected by a flame safeguard system
B10.1 Scope
B10.2 Principle
B10.3 Apparatus
B10.4 Materials
B10.5 Preparation of apparatus
B10.6 Procedure
B10.7 Result
B11 M.O.T. 3.7.1.5—Ignition—Opening of flame safeguard system
B11.1 Scope
B11.2 Principle
B11.3 Apparatus
B11.4 Materials
B11.5 Preparation of apparatus
B11.6 Procedure
B11.7 Result
B12 M.O.T. 3.7.1.14—Operation of safety shut-off system
B12.1 Scope
B12.2 Principle
B12.3 Materials
B12.4 Apparatus
B12.5 Preparation of apparatus
B12.6 Procedure
B12.7 Result
B13 M.O.T. 3.7.2.1.2/3.7.2.2.1—Start flame establishment period delayed ignition tests
B13.1 Scope
B13.2 Principle
B13.3 Apparatus
B13.4 Materials
B13.5 Preparation of apparatus
B13.6 Procedure
B13.7 Result
B14 M.O.T. 4.2—Determination of CO/CO2 ratio of combustion products—Underload
B14.1 Scope
B14.2 Principle
B14.3 Apparatus
B14.4 Materials
B14.5 Preparation of apparatus
B14.6 Procedure
B14.7 Result
B15 M.O.T. 4.3—Determination of CO/CO2 ratio of combustion products—Overload
B15.1 Scope
B15.2 Principle
B15.3 Apparatus
B15.4 Materials
B15.5 Preparation of apparatus
B15.6 Procedure
B15.7 Result
B16 M.O.T. 4.4—Determination of CO/CO2 ratio of combustion products—Permanent pilots
B16.1 Scope
B16.2 Principle
B16.3 Apparatus
B16.4 Materials
B16.5 Preparation of apparatus
B16.6 Procedure
B16.7 Result
B17 M.O.T. 4.5—Flame abnormality
B17.1 Scope
B17.2 Principle
B17.3 Apparatus
B17.4 Materials
B17.5 Preparation of apparatus
B17.6 Procedure
B17.6.1 All appliances
B17.6.2 Type 2 appliances
B17.7 Result
B18 M.O.T. 4.6—Ignition tests
B18.1 Scope
B18.2 Principle
B18.3 Apparatus
B18.4 Materials
B18.5 Preparation of apparatus
B18.6 Procedure
B18.7 Result
B19 M.O.T. 4.7—Delayed ignition test
B19.1 Scope
B19.2 Principle
B19.3 Apparatus
B19.4 Materials
B19.5 Preparation of apparatus
B19.6 Procedure
B19.7 Result
B20 M.O.T. 4.8—Flame stability to draught
B20.1 Scope
B20.2 Principle
B20.3 Apparatus
B20.4 Materials
B20.5 Preparation of apparatus
B20.6 Procedure
B20.7 Result
B21 M.O.T. 4.11—Pilot flames—Ignition and stability
B21.1 Scope
B21.2 Principle
B21.3 Apparatus
B21.4 Materials
B21.5 Preparation of apparatus
B21.6 Procedure
B21.7 Result
B22 M.O.T. 4.12—Effect of appliance door operation on burner stability
B22.1 Scope
B22.2 Principle
B22.3 Apparatus
B22.4 Materials
B22.5 Preparation of apparatus
B22.6 Procedure
B22.7 Result
B23 M.O.T. 4.13—Burner operation—Unburnt gas spillage from burner system
B23.1 Scope
B23.2 Principle
B23.3 Apparatus
B23.4 Materials
B23.5 Preparation of apparatus
B23.6 Procedure
B23.7 Result
B24 M.O.T. 4.15—Case pressure test
B24.1 Scope
B24.2 Principle
B24.3 Apparatus
B24.4 Materials
B24.5 Preparation of apparatus
B24.6 Procedure
B24.7 Result
B25 M.O.T. 4.16—Sooting test—Luminous effect appliances
B25.1 Scope
B25.2 Principle
B25.3 Apparatus
B25.4 Materials
B25.5 Preparation of apparatus
B25.6 Procedure
B25.7 Result
B26 M.O.T. 5.2.1—Flue operation–Spillage test–Type 1 appliances
B26.1 Scope
B26.2 Principle
B26.3 Apparatus
B26.4 Materials
B26.5 Preparation of apparatus
B26.6 Procedure
B26.7 Result
B27 M.O.T. 5.2.2—Flue operation—Spillage test—Type 2 appliances
B27.1 Scope
B27.2 Principle
B27.3 Apparatus
B27.4 Materials
B27.5 Preparation of apparatus
B27.6 Procedure
B27.7 Result
B28 M.O.T. 5.2.3—Determination of CO/CO2 ratio of combustion products under conditions of flue blockage, downdraught or updraught
B28.1 Scope
B28.2 Principle
B28.3 Apparatus
B28.4 Materials
B28.5 Preparation of apparatus
B28.6 Procedure
B28.7 Result
B29 M.O.T. 5.2.4—Flue gas temperature test
B29.1 Scope
B29.2 Principle
B29.3 Apparatus
B29.4 Materials
B29.5 Preparation of apparatus
B29.6 Procedure
B29.7 Result
B30 M.O.T. 5.4.2—Flame abnormality on progressive air supply restriction
B30.1 Scope
B30.2 Principle
B30.3 Apparatus
B30.4 Materials
B30.5 Preparation of apparatus
B30.6 Procedure
B30.7 Result
B31 M.O.T. 5.4.3/4—Safe performance with electricity supply variation
B31.1 Scope
B31.2 Principle
B31.3 Apparatus
B31.4 Materials
B31.5 Preparation of apparatus
B31.6 Procedure
B31.7 Result
B32 M.O.T. 5.5—Temperature hazards
B32.1 Scope
B32.2 Principle
B32.3 Apparatus
B32.4 Materials
B32.5 Preparation of apparatus
B32.6 Procedure
B32.7 Result
B33 M.O.T. 5.6.1—Heat resistance—Overload condition
B33.1 Scope
B33.2 Principle
B33.3 Apparatus
B33.4 Materials
B33.5 Preparation of apparatus
B33.6 Procedure
B33.7 Result
B34 M.O.T. 5.6.2—Heat resistance—Light back condition
B34.1 Scope
B34.2 Principle
B34.3 Apparatus
B34.4 Materials
B34.5 Preparation of apparatus
B34.6 Result
B35 M.O.T. 5.7.1—Safety system test
B35.1 Scope
B35.2 Principle
B35.3 Materials
B35.4 Apparatus
B35.5 Preparation of apparatus
B35.6 Procedure
B35.7 Result
B36 M.O.T. 5.7.2—Vitiation test
B36.1 Scope
B36.2 Principle
B36.3 Materials
B36.4 Apparatus
B36.5 Preparation of apparatus
B36.6 Procedure
B36.7 Result
B37 M.O.T. 5.7.3—Determination of CO/CO2 ratio of combustion products under conditions of normal operation
B37.1 Scope
B37.2 Principle
B37.3 Apparatus
B37.4 Materials
B37.5 Preparation of apparatus
B37.6 Procedure
B37.7 Result
B38 M.O.T. 5.8.1—Floor loading test
B38.1 Scope
B38.2 Principle
B38.3 Apparatus
B38.4 Procedure
B38.5 Result
B39 M.O.T. 5.8.2—Strength—Loading test
B39.1 Scope
B39.2 Principle
B39.3 Apparatus
B39.4 Preparation of apparatus
B39.5 Procedure
B39.5.1 For torsional load test on appliances with vertical and horizontal flue spigots
B39.5.2 For vertical load on an appliance with vertical flue
B39.5.3 For vertical load on an appliance with horizontal flue
B39.6 Result
B40 M.O.T. 5.9—Wind test—Room sealed appliances
B40.1 Scope
B40.2 Principle
B40.3 Apparatus
B40.4 Materials
B40.5 Preparation of apparatus
B40.6 Procedure
B40.7 Result
B41 M.O.T. 5.10—Rain resistance of flue terminals of room sealed appliances
B41.1 Scope
B41.2 Principle
B41.3 Apparatus
B41.4 Materials
B41.5 Preparation of apparatus
B41.6 Procedure
B41.7 Result
B42 M.O.T. 5.11.1/2—Linting test
B42.1 Scope
B42.2 Principle
B42.3 Apparatus
B42.4 Materials
B42.5 Preparation of apparatus
B42.6 Procedure
B42.7 Result
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G
Cited references in this standard
EN 298
Automatic gas burner control systems for gas burners and gas burning appliances with or without fans
[Current]
Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition
[Current]
Pipe threads where pressure-tight joints are made on the threads, Part 1: Dimensions, tolerances and designation
Content history
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