BS 779:1989
Current
The latest, up-to-date edition.
Specification for cast iron boilers for central heating and indirect hot water supply (rated output 44 kW and above)
Hardcopy , PDF
English
31-10-1989
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Foreword
Committees responsible
Specification
Section one. General
1.1 Scope
1.2 Definitions
1.3 Performance
Section two. Materials
2.1 Boiler pressure bearing parts
2.2 Refractory materials
2.3 Pulling-up bolts and tie rods
Section three. Construction and workmanship
3.1 Testing
3.2 Repairs to castings by welding
3.3 Boiler openings
3.4 Dampers, doors and observation ports
Section four. Mountings and fittings
4.1 Safety valves
4.2 Vent pipes
4.3 Pressure gauges
4.5 Temperature gauges
Section five. Combustion equipment
5.1 General
5.2 Solid fuel firing
5.3 Liquid fuel firing
5.4 Gas firing
Section six. Automatic controls and electrical
installation
6.1 Automatic controls
Section seven. Inspection and marking
7.1 Inspection
7.2 Marking
Appendices
A. Installation provisions
B. Electrical installation
C. Information to be supplied by the purchaser
D. Information to be supplied by the manufacturer
Tables
1. Tapping sizes for safety valves
2. Sizes for safety valves (open vented systems
only)
3. Tapping sizes for vent pipes
4. Minimum open vent pipe sizes
Figure
1. Heating system categories
Design and construction including materials workmanship, inspection, testing and marking, of boilers for use with solid gaseous and liquid fuels.
| Committee |
RHE/24
|
| DevelopmentNote |
Supersedes BS 779(1976) and 88/70535 DC. (07/1999) Reviewed and confirmed by BSI, January 2009. (12/2008)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| SupersededBy | |
| Supersedes |
1.1.1 This British Standard specifies requirements for the design and construction including materials, workmanship, inspection testing and marking of cast iron boilers for central heating and indirect hot water supply.
1.1.2 This standard applies to boilers for hot water with rated heat output of 44 kW or above when used with one or more of the following fuels:
- smokeless solid fuels, e.g. furnace coke, low temperature coke or anthracite;
- bituminous coal fired by means of mechanical stokers;
- gaseous fuels of the 2nd and 3rd families (see BS 4947);
and with rated heat output of 300 kW and above when used with liquid fuels of the classes specified in BS 2869.
1.1.3 This standard does not apply to steam boilers or boilers pressurized by steam.
NOTE. The titles of the publications referred to in this standard are listed on page 13.
| BS 845-1:1987 | Methods for assessing thermal performance of boilers for steam, hot water and high temperature heat transfer fluids Concise procedure |
| BS 749:1969 | Specification for underfeed stokers |
| BS 3643-1:1981 | ISO metric screw threads Principles and basic data |
| BS 1971:1969 | Specification for corrugated furnaces for shell boilers |
| BS 799-4:1972 | Specification for oil burning equipment Atomizing burners over 36 litres per hour and associated equipment for single burner and multi burner installations |
| BS 1387:1985 | Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads |
| BS 5885(1980) : AMD 5019 | INDUSTRIAL GAS BURNERS, OF INPUT RATING 60 KW AND ABOVE |
| BS 2789:1985 | Specification for spheroidal graphite or nodular graphite cast iron |
| BS 7190:1989 | Method for assessing thermal performance of low temperature hot water boilers using a test rig |
| BS 6759-1:1984 | Safety valves Specification for safety valves for steam and hot water |
| BS 5410-2:1978 | Code of practice for oil firing Installations of 45 kW and above output capacity for space heating, hot water and steam supply services |
| BS 1179:1967 | Glossary of terms used in the gas industry |
| BS 759(1975) : LATEST | |
| BS 6880-3:1988 | Code of practice for low temperature hot water heating systems of output greater than 45 kW Installation, commissioning and maintenance |
| BS 2869:1998 | Specification for fuel oils for agricultural, domestic and industrial engines and boilers |
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