BS 5809:1980

Foreword
Cooperating organizations
Specification
Section one. General
1 Scope
2 References
3 Definitions
4 General requirements
5 General conditions of test
Section two. Safety requirements and associated
               methods of test
6 Marking and instruction
7 Soundness
8 Heat input
9 Combustion
10 Ignition
11 Flame stability
12 Appliance flue outlet and draught diverter
13 Fire hazard and limited temperatures
14 Gas controls
15 Gas cocks and taps
16 Connections
17 Gas rate and aeration adjusters
18 Electrical
19 Construction and design
20 Pressure water heater
Section three. Efficiency requirements and test methods
21 Efficiency
Figures
1 Bubble leak indicator
2 Apparatus for measuring floor and wall temperatures

Safety requirements, associated test methods and thermal efficiency of gas heating equipment of machines wherein water is either heated by an integral gas burner or by circulating hot water from an adjacent heater, or where a separate heater supplies rinse water.

This British Standard specifies safety requirements and associated methods of test for the gas heating equipment of the following types: dishwashing machines where water is heated by an integral gas burner; dishwashing machines where water is heated by circulating hot water supplied from an adjacent gas water heater; dishwashing machines where rinse water is supplied by a separate gas water heater. It also specifies requirements for the efficiency of the water heating equipment on these machines. For appliances of the types specified in b) and c) the requirements are mainly satisfied by reference to the appropriate British Standard, but certain additional requirements are detailed to make them suitable for use in this particular application. In specifying requirements for these appliances it is assumed that the gas supply pressure available at the inlet to the appliance will be within the following range under normal operating conditions. Family Pressure range mbara 1st 7.5 to 25 2nd 17.5 to 27.5 3nd butane 28 to 35 propane 37 to 45 a 1 mbar = 102 N/m2 = 0.1 kPa. Requirements for controls given in this standard relate to those fitted as part of, or supplied with, particular appliances: they do not necessarily provide a complete specification for controls intended for general use and tested separately. The attention of manufacturers and installers of equipment covered by this standard is drawn to additional requirements contained in the Health and Safety at Work etc. Act, 1974, in local authority regulations, with particular reference to water supply, in the Factories Act, in the Gas Safety Regulations 1972, in the Building Regulations issued by the Department of the Environment and in the Building Standards (Scotland) (Consolidation) Regulations issued by the Scottish Development Department. Guidance on preferred dimensions may be found in PD 6444.