BS 5386-1:1976

National foreword
Brief history
National appendix A
Cooperating organizations
Specification
1 General
1.1 Scope
1.2 Field of application
1.3 Terminology
1.4 Classification
2 Constructional characteristics
2.1 General
2.2 Special requirements for certain parts
3 Performance characteristics
3.1 Soundness
3.2 Obtaining the nominal rate and the nominal output
3.3 Performance safety
3.4 Performance of auxiliary equipment
3.5 Combustion
3.6 Aptitude with gases other than the reference gas
3.7 Efficiency
3.8 Prolonged performance test
3.9 Time for temperature rise
4 Test methods
4.0 General
4.1 Soundness
4.2 Obtaining the nominal rate
4.3 Performance safety
4.4 Performance of auxiliary equipment
4.5 Combustion
4.6 Aptitude with gases other than the reference gas
4.7 Efficiency
4.8 Prolonged performance test
4.9 Time for temperature rise
4.10 Test reports and technical schedules to be
      supplied to the test laboratory
4.11 Designation
5 Marking
5.1 Data plate
5.2 Quality seal
5.3 Instruction
6 National options
6.1 Commercial categories in various countries and
      equivalence between the different categories
6.2 Gases used and supply pressures
6.3 Gas inlet connections in various countries
6.4 Water inlet connections in various countries
6.5 Nominal useful outputs
6.6 Gas taps
6.7 Flame failure devices
Annex
1 Test apparatus for type C1 appliances
Tables
1 Gas connection thread sizes
2 Gas connection copper tube sizes
3 Water connection thread sizes
4 Water connection copper tube sizes
5 Flue socket diameters
6 Maximum variation permitted for the water rate
      relative to the mean rate
7 Test gas characteristics
8 Appliance category test gases
9 Test pressures
10 CO2 (carbon dioxide) percentages
11 Commercial categories
12 Supply pressures
13 Gas inlet connections
14 Water inlet connections
15 Protection of the pilot
Figures
1 Apparatus for testing the appliance soundness
2 Device for testing durability of sealing materials
3 Test apparatus for abnormal draught
4 Test of an appliance mounted on a common duct
5 Probe for combustion product sampling
6 Disposition of test apparatus for type C1
      appliances

Defines the main constructional and performance characteristics of the appliances and includes appropriate test methods for the evaluation of these characteristics. Covers appliances designed to burn 1st, 2nd and 3rd family gases.