BS 5386-5:1988

Foreword
Committees responsible
Specification
1 General
1.1 Scope and field of application
1.2 Definitions
1.3 Classification of appliances
2 Constructional requirements
2.1 General
2.2 Requirements for particular components
2.3 Electrical equipment
3 Operational requirements
3.1 Soundness
3.2 Heat input rates and useful outputs
3.3 Safety of operation
3.4 Performance of particular components
3.5 Combustion
3.6 Efficiency
3.7 Prolonged performance test
3.8 Heating-up time
3.9 Afterheating of the water
4 Test methods
4.0 General
4.1 Soundness
4.2 Heat input rates and useful outputs
4.3 Safety of operation
4.4 Performance of particular components
4.5 Combustion
4.6 Efficiency
4.7 Prolongued performance test
4.8 Heating-up time
4.9 Afterheating of the water
5 Marking
5.1 Data plate
5.2 Instructions
Appendix
A Test apparatus for type C appliances
Tables
1 Conversion operations
2 Maximum variation permitted for the water rate
     relative to the mean rate
3 Test gas characteristics (15 deg C, 1013 mbar and
     dry)
4 Test gases for the appliance categories
5 Test pressures
6 Values of V CO2,N (in %)
Figures
1 Test apparatus for appliances fitted with a draught
     diverter
2 Probe for sampling combustion products
3 Arrangement of the test apparatus for type C1
     appliances
4 Test apparatus for type C2 appliances

Requirements for safety, fitness for purpose, efficient use of energy, classification and marking of water heaters in which the heating of the water depends directly upon the water flow. Includes relevant test methods.