BS 3376:1994

Committees responsible
Foreword
Specification
Section 1. General
1.1 Scope
1.2 References
1.3 Definitions
1.4 Classification
Section 2. Construction
2.1 General
2.2 Minimum dimensions for category b) appliances
2.3 Firefront
2.4 Bottomgrate
2.5 Combustion air control
2.6 Ashpan
2.7 Ashpit and ashpit cover
2.8 Front firebars and fallplate
2.9 Deepening bar
2.10 Deepening plate
2.11 Gas ignition burner
2.12 Boiler
2.13 Boiler flue
2.14 Throat restrictor
2.15 Convection chamber and airways
2.16 Tools
2.17 Electrical
Section 3. Performance
3.1 Thermal performance
3.2 Banking performance
3.3 Condition of appliance after test
3.4 Throat restrictor
Section 4. Instructions and marking
4.1 Instructions
4.2 Marking
Annexes
A (normative) Test methods and conditions
B (normative) Test fuels
Tables
1 Materials for construction of appliance components
2 Minimum dimensions for category b) appliances
3 Minimum ashpan capacity
4 Relationship between gas ports and air ports
5 Range of adjustment of throat restrictor
6 Materials and minimum thickness of convection
      chamber and airways for appliances without fan
      assisted convection air
7 Materials and minimum thickness of convection
      chamber and airways for appliances with fan
      assisted convection air
8 Performance of category a) appliances burning test
      fuel A or B
9 Performance of category b) appliances burning test
      fuel A or B
10 Performance of category b) appliances burning test
      fuel C and designated as suitable for burning
      bituminous coal at enhanced efficiency
Figures
1 Typical inset open fire showing ash shedding area
2 Example of a suitable aeration device for a
      natural gas ignition burner
3 Gas connection elbows
4 Schematic diagram of boiler flue mouth entry
A.1 Datum level for various types of open fire
List of references