Turn the Water Off First!
The mixers are relatively simple to install although we do recommend you get a qualified person to do the installation.
2 flexi pipes connect your hot and cold water into the bottom of the unit. Prefferably hand tighten the pipes, do not use tools that will damage the connection.
The unit is attached to a one-hole basin using a threaded rod and nut.
A Rubber O-ring is placed on the top of the basin and then rubber and metal gaskets are placed under the basin.
The type of connection required from the flexi hoses to the water supply depends on the size and type of pipework or couplings that are already in place in your bathroom.
You may need to connect using a brass male coupling (pictured here)
if there are no existing connectors on the pipes or you may need to fit a reducer if the existing connectors are larger than required.
If you are lucky the existing connectors will be a perfect match.
Use PTFE tape on all connections to ensure a good watertight seal.
All these items can be bought from your local plumbers merchant.
Here is a diagram showing the layout for installing a basic basin mixer tap with pop up waste: