First, hang the unit from the undersink wall, as shown, or simply stand the unit in a secure undersink location.
Then:
Install the inlet valve. Your unit may have a saddle valve, for installation on copper tubing, or a Murdock EZ Connector, for use with flexible pipe. (See the attached instructions for the style that is supplied with your unit.) Push the tube from the inlet valve into the empty port of the black filter housing.
Install the faucet on the sink. (See attached instructions.) Push the tube from the faucet into the open fitting of white filter housing.
Open the ledge faucet and leave it on. (Faucets with up/down handles lock open by pulling the handle up.) Turn on the water to the filter with the blue-handled inlet valve. Let the unit fill and watch for leaks. Allow water to run from the faucet for four or five minutes to rinse the filters.
After the unit is rinsed, it's ready for operation. Water may appear cloudy for a few hours after installation. Don't worry. It's only air trapped in the filter vessels, and it will work itself out. The water can be used at any time. If the faucet drips occasionally, that problem will also resolve itself when air clears from the unit.
(whole house & well units)
(listed by part numbers)