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You may need the following tools and products to install
a WC or toilet in your home.
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The location of a WC in your home is restricted by the need to use a 100mm (4in) soil pipe which has sufficient fall to discharge into the stack. However, it is possible to install a small-bore waste system, often called an electric WC. These have an electric pump and a shredder allowing waste to be discharged into a 22mm (3/4in) pipe up to a distance of 50m (55yd) from the soil stack. This means that they can be installed in small spaces (under the stairs or in cellars) because they can pump vertically up to a maximum of 4m (4yd), so long as the space is adequately ventilated and the system has been approved by the local water authority. It must be wired to a fused connection unit - or via an approved flex outlet if fitted into a bathroom.
In an electric WC, the shredding unit fits neatly behind a conventional 'P'-trap lavatory pan. The system is activated automatically by flushing the cistern and switches off about 20 seconds later. For safety, the system should be wired to a fused connection unit.
The small-bore wastepipe from the WC must be connected to the soil stack at least 200mm (8in) above any other waste connections. It can be connected to the stack using a standard 36mm (1 1/4in) waste boss but it will require a 22-36mm (3/4 - 1 1/4in) adaptor.
