BS 7977-1:2002

Committees responsible
Foreword
1 Scope
2 Normative references
3 Definitions
   3.1 Domestic gas-fired radiant/convector heating
       appliances
   3.2 Gases
   3.3 Appliance construction
   3.4 Immobilizing an adjuster or a control
   3.5 Appliance performance
4 Classification of appliances
   4.1 Classification according to the nature of the gases
       used (categories)
   4.2 Conversion to different gases
5 Constructional requirements
   5.1 Materials and method of construction
   5.2 Adjusters, controls and safety devices
   5.3 Design requirements for wall-mounted appliances and
       floor-mounted appliances not requiring a hearth
6 Performance and test methods
   6.1 General
   6.2 Soundness of the gas circuit
   6.3 Heat input
   6.4 Safety of operation
   6.5 Combustion
   6.6 Spillage monitoring system
   6.7 Cyclic use
   6.8 Efficiency
7 Marking and instructions
   7.1 Marking on the appliance
   7.2 Marking of the packaging
   7.3 Utilization of symbols on the appliance and packaging
   7.4 Instructions
8 Particular requirements for inset live fuel effect gas
   appliances (see Figure 1) not exceeding a net heat input
   of 15 kW based on the net calorific valve
   8.1 Constructional requirements
   8.2 Performance and test methods
   8.3 Marking and instructions
Annex A (normative) Equivalence rules
Annex B (informative) Calculation of conversions of NO[x]
Annex C (informative) A Guide to the Clauses of this British
        Standard addressing the essential requirements of the
        Gas Appliance Directive (GAD)
Bibliography
Tables and Figures

Gives requirements and methods of test for the construction, safety, rational use of energy, classification and marking of 2nd and 3rd family gas-fired domestic radiant convector heating appliances not exceeding a nominal heat input of 15 kW based on the net calorific value and which incorporate a natural draught burner.