Plumbing for a Washing Machine: Waste Options
1: DIRECT CONNECTION
If there is a sink waste pipe running behind or along the side of the machine (and providing the machine is suitable), connect the outlet hose directly to it using a self-cutting connector similar to the one used in Supply Option 1. Such connectors are designed to fit standard 38mm (1-1/2″) pipe.
You don’t need any special tools: the connector has its own cutting tool which is removed from the saddle clamp once the hole has been cut, ready for the hose connector assembly to be screwed to the clamp body.
1. Fit the adjustable clamp (complete with internal seal) round the waste pipe andin the cutter to make the hole. Remove the cutter.
2. Attach the hose connector and non-return valve to the clamp, with or without the elbow supplied, depending on the angle. Then fit the machine outlet hose.
2: REPLACE SINK TRAP
Unscrew the old trap, using a damp cloth to grip the locking rings. Assemble the new trap according to the instructions, thento the sink outlet and waste pipe, letting the trap’s push-fit joints take up any adjustment. Finally, fit the drain hose to the outlet on the side of the trap.
3: FIT STANDPIPE
A standpipe prevents siphonage of the waste during washing by incorporating an air break.
The standpipe itself should be about 600mm (24″) high (check the machine instructions), and must have a trap fitted below it. If there is an existing waste pipe running near the machine at floor level, connect the standpipe as shown. See Problem Solver – Washing Machine Drainage Problems if you have to run a new waste pipe.
b) Fit the tee fitting with the swept part angled in the direction of the flow. Follow by adding the two parts of the trap and the standpipe.
c) Secure the assembly to the a wall using 38mm (1-1/2″) pipe clips. Finally, simply slip the washing machine outlet hose into the top of the standpipe.
Some water authorities only permit certain types of connection, and others forbid taking the cold supply direct from the rising main. Phone the authority’s engineer’s department and check what rules apply in your area before buying any parts.