How to install 3 stage undersink water filter?

Connect the supplied tee-piece isolation valve to the cold water supply under your sink.
Cut the provided tube to approximately 1 meter in length.
Run this tube from the isolation valve to the "To Water Inlet" on the back of the filter unit.
Cut the tube close to the isolation valve and connect the pressure limiting valve (PLV) between the isolation valve and the "To Water Inlet".
To install the filter tap, drill a 12mm hole in your sink or stone benchtop, ensuring there is enough clearance underneath to fasten the nut.
Run the remaining tube from the filter tap to the "To Faucet" connection on the back of the filter unit.
Install all the filter cartridges by pushing them in and turning them in a counter-clockwise direction.

Turn the water supply back on and flush the system for 15 minutes.

Here are the step-by-step instructions for installing the 3 - Stage Undersink Water Filter System