Water Systems
Reduce the distance hot water has to travel to minimise cold water run-off
- locate heat sources and hot water storage vessels as close as possible to hot water outlet taps, to reduce cold water run-off (6 - paragraph 10)
Consider the most appropriate system design
- establish the quality, quantity and pressure of the water supply (3 - measure D5.1)
- frequently used fittings located closest to the hot water source to reduce dead leg (4 - FactSheet 11)
- fittings that use hot water grouped as closely as possible around the hot water source to minimise pipe runs and reduce dead legs (4 - FactSheet 11)
- condensate return system (7 - page 65)
Establish baseline demand
- Offices: good practice benchmark: 2.0 m³/employee/annum (0.4 m³/m²/annum) (5 - section 5.7)
- Hotels: good practice benchmark: 5 to 10 m³/bedspace/annum or 9 to 40 m³/bedspace/annum (with swimming pool) (5 - section 4.9)
- good practice benchmark of 32 m³/bedspace/annum or less (2 - credit Wat 1)
Consider user education requirements
- Provide a simple non-technical Building Users Guide, including information on travel initiatives, provision of public transport, energy efficient measures, water saving measures etc (1 - credit M12)
Reference Documents
| Series Number | Publisher | Title | |
|---|---|---|---|
| 1 | BRE | BREEAM 2006 | |
| 2 | BRE | EcoHomes 2006 | |
| 3 | COP 6/99 | BSRIA | Environmental Code of Practice for Buildings and their Services |
| 4 | WFS11 | EA | Plumbing and heating system design and management |
| 5 | C657 | CIRIA | Water key performance indicators and benchmarks for offices and hotels |
| 6 | 09/02/03 | WRAS | Conservation of Water |
| 7 | BR404 | BRE | Building Elements Building services |