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  • BS 7977-2:2003

    Current The latest, up-to-date edition.

    Specification for safety and rational use of energy of domestic gas appliances Combined appliances. Gas fire/back boiler

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  13-06-2003

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
       3.1 Appliance and parts
       3.2 Parts of the appliance conveying gas to the burners
       3.3 The burner
       3.4 Burner control systems
       3.5 Construction
       3.6 Auxiliary equipment
       3.7 Gases
       3.8 Appliance performance
       3.9 Gas combustion
       3.10 lint assessment
    4 Classification of appliances
       4.1 Classification according to the nature of the gases used
            (categories)
       4.2 Conversion to different gases
    5 Construction
       5.1 Materials and method of construction
       5.2 Accessibility for maintenance and use
       5.3 Connections to the gas and water pipes
       5.4 Flue system
       5.5 Soundness
       5.6 Supply of combustion air and evacuation of the combustion
            products
       5.7 Assembly
       5.8 Electrical equipment
       5.9 Operational safety in the event of fluctuation, interruption
            and restoration of the auxiliary energy
       5.10 Confirmation of operation
       5.11 Requirements for adjusting, control and safety devices
       5.12 Burners
    6 Test conditions
       6.1 Test gases
       6.2 Conditions of test
    7 Requirements and test methods
       7.1 Soundness
       7.2 Heat input
       7.3 Limiting temperatures
       7.4 Ignition-cross lighting and flame-stability
       7.5 Delayed ignition
       7.6 Control devices
       7.7 Combustion
       7.8 Lint assessment
       7.9 Guarding (Fires only)
       7.10 Spillage monitoring
       7.11 Cyclic use test - fire only
       7.12 Products clearance
       7.13 Flame supervision device
       7.14 Useful efficiency at nominal heat input
       7.15 Useful efficiency at park load (back boiler only)
       7.16 Hydraulic resistance
       7.17 Stability of the fire
       7.18 Thermostats and water temperature limiting devices
    8 Marking and instructions
       8.1 General
       8.2 Appliance marking
       8.3 Dress guard
       8.4 Warning labels
       8.5 Packaging
       8.6 Name badge
       8.7 User instructions
       8.8 Installation instructions
       8.9 Conversion instructions
    Annex A (normative) - Lint - Method of test for resistance to
                            airborne lint
    Annex B (informative) - Composition of the gas circuit
    Annex C (informative) - GAD essential requirements guide
    Bibliography
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Provides the requirements and methods of test for the construction, safety, performance, classification and marking of gas-fired appliances consisting of a back boiler and a gas fire.

    General Product Information - (Show below) - (Hide below)

    Committee GSE/36
    Development Note Supersedes BS 5258-8(1980) & 95/717426 DC (05/2003) Supersedes BS 6332-3(1984) (07/2003) Reviewed and confirmed by BSI, October 2008. (09/2008)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    07/30150793 DC : 0 BS 5440-1 - FUELING AND VENTILATION FOR GAS APPLIANCES OF RATED INPUT NOT EXCEEDING 70 KW NET (1ST, 2ND AND 3RD FAMILY GASES) - PART 1: SPECIFICATION FOR INSTALLATION OF GAS APPLIANCES TO CHIMNEYS AND FOR MAINTENANCE OF CHIMNEYS
    BS 5871-2:2005 Specification for the installation and maintenance of gas fires, convector heaters, fire/back boilers and decorative fuel effect gas appliances Inset live fuel effect gas fires of heat input not exceeding 15 kW, and fire/back boilers (2nd and 3rd family gases)
    BS 5440-1:2008 Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases) Specification for installation of gas appliances to chimneys and for maintenance of chimneys
    BS 6798:2014 Specification for selection, installation, inspection, commissioning, servicing and maintenance of gas-fired boilers of rated input not exceeding 70 kW net
    BS 6700(2006) : 2006 DESIGN, INSTALLATION, TESTING AND MAINTENANCE OF SERVICES SUPPLYING WATER FOR DOMESTIC USE WITHIN BUILDINGS AND THEIR CURTILAGES - SPECIFICATION

    Standards Referencing This Book - (Show below) - (Hide below)

    BS EN 437 : 2003 TEST GASES - TEST PRESSURES - APPLIANCE CATEGORIES
    ISO 7005-2:1988 Metallic flanges — Part 2: Cast iron flanges
    BS 5258-8:1980 Safety of domestic gas appliances Combined appliances: gas fire/back boiler
    ISO 274:1975 Copper tubes of circular section — Dimensions
    BS EN 257:2010 Mechanical thermostats for gas-burning appliances
    ISO 7005-3:1988 Metallic flanges Part 3: Copper alloy and composite flanges
    BS EN 126:2012 Multifunctional controls for gas burning appliances
    IEC 60817:1984 Spring-operated impact-test apparatus and its calibration
    BS EN 484:1998 Specification for dedicated liquefied petroleum gas appliances. Independent hotplates, including those incorporating a grill for outdoor use
    ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
    BS EN 60730-2-9:2010 Automatic electrical controls for household and similar use Particular requirements for temperature sensing controls
    BS EN 88:1991 Pressure governors for gas appliances for inlet pressures up to 200 mbar
    BS EN 161 : 2011 AUTOMATIC SHUT-OFF VALVES FOR GAS BURNERS AND GAS APPLIANCES
    BS EN 50165:1997 Electrical equipment of non-electric appliances for household and similar purposes. Safety requirements
    BS EN 125 : 2010 FLAME SUPERVISION DEVICES FOR GAS BURNING APPLIANCES - THERMOELECTRIC FLAME SUPERVISION DEVICES
    BS EN 483 : 2000 GAS-FIRED CENTRAL HEATING BOILERS - TYPE C BOILERS OF NOMINAL HEAT INPUT NOT EXCEEDING 70 KW
    ISO 7005-1:2011 Pipe flanges — Part 1: Steel flanges for industrial and general service piping systems
    BS EN 297:1994 Gas-fired central heating boilers. Type B11 and B11BS boilers fitted with atmospheric burners of nominal heat input not exceeding 70 kW
    BS EN 298:2012 Automatic burner control systems for burners and appliances burning gaseous or liquid fuels
    BS 1179:1967 Glossary of terms used in the gas industry
    ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
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