johnb
Joined: 27 Dec 2002
Posts: 176
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 Posted: Sat Jan 13, 2007 3:19 pm Post subject: |
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Why would you want such a course.
I work on some of these systems. IMHO, they are a nightmare UNLESS the CUSTOMER knows what they're in for before they start.
In PRINCIPLE, the water could be used in a washing machine. In PRACTICE, the water can be discoloured and a bit smelly in the worst case (over-long storage in over-sized tank, for example), so will only be used to flush WCs.
The rainwater system, whatever it's used for, MUST BE ENTIRELY SEPARATED from the mains water system of the building. This means 'double plumbing' at significant cost. The ONLY permitted way to connect mains to rainwater (to prevent possible backflow) is via a large airgap, so the only 'backup' available in case the system fails is a tank or filling point with such a gap. This tends to mean (in ALL the systems I've worked on!) that there's NO effective backup: there's one power supply, one electronics package, one pump and one plumbing system to the WCs. If ANY ONE of these fails, the WCs won't flush! And that's the quickest way I know to make a building by legal definition 'unfit for habitation'!
And you need to be a 'licensed plumber' (see http://www.wras.co.uk/) to install such systems. |
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