BS 7074-2:1989
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
31-07-1989
Foreword
Committees responsible
Section one. General
1. Scope
2. Definitions
3. Symbols, designations and units
4. Connection of expansion vessel to the system
5. Testing and commissioning
6. Maintenance
7. Workmanship
Section two. Low temperature systems
8. Design considerations
9. Application
10. Ancillary equipment
Section three. Medium temperature systems
11. Design considerations
12. Application
13. Ancillary equipment
Appendix
A. Examples of recommended procedure for the
calculation of the size of expansion vessels
Tables
1. Symbols, designations and units
2. Expansion percentages (e) for various flow
temperatures (tf) from 4 deg C initial temperature
3. Pressure allowance
Figures
1. System pressure variations: recommended arrangement
2. System pressure variations: neutral point at pump
discharge
3. System pressure variations: neutral point remote
from pump
4. Low temperature hot water system
5. Multiple boiler installations for low temperature
and medium temperature applications
6. Typical expansion percentage of water mixed with
anti-freezing agent versus temperature
7. Medium temperature hot water system
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