Run a 1/2" high-pressure hose from the drain outlet on the softener to a standpipe or a waste pipe. There must be an "air gap" at the discharge point to prevent back-siphonage.
You will need three valves: an inlet valve, an outlet valve, and a bypass valve.
Connect a separate hose to the overflow barb on the side of the cabinet. This should be run through an outside wall so that any cabinet leaks are visible outside, preventing indoor flooding. Step 4: Commissioning the Unit
The HV3 features clear markings for water flow. Using high-quality flexible hoses is highly recommended to reduce vibration and make the unit easier to move for cleaning.
Harvey HV3 Water Softener Installation Manual: The Complete Setup Guide
Do you need a (fitting sizes, hose types)?
Are you installing this in a or low-pressure (gravity) system?
Ensure a non-return valve (check valve) is installed on the inlet to prevent softened water from flowing back into the mains supply. Step 2: Connecting the Inlet and Outlet