Apply PTFE tape to all threaded connections. Do not apply tape to parallel threads with rubber washers. Step 4: Connecting the Hoses to the Softener

If you notice a drop in pressure, check that the bypass valves are fully open.

Assemble the bypass set according to the manufacturer's instructions, tightening it up before putting it into position. Place the assembled bypass set in your chosen location to test the fit before finalising the pipework alterations.

Slowly open the inlet and outlet valves on the softener while closing the bypass valve. Check for Leaks: Inspect every joint and connection point.

Open the lowest cold water tap in the house to drain the remaining water from the pipes. Step 2: Prepare the Pipework

Turn off the main stopcock and drain the pipes.

This article provides general guidance only. Harvey's official recommendation is to have the unit installed by qualified professionals. If you choose to self-install, you do so at your own risk.

Suitable for installation under most kitchen sinks 1. Pre-Installation: Preparing for Your HV3

The Harvey HV3 is WRAS-approved (Water Regulations Advisory Scheme) for use in UK water systems. As part of your installation, you must comply with the relevant installation requirements, including:

The drain hose must never be kinked or restricted, as this will cause an overflow from the brine cabinet. You can extend the drain up to 9 metres if you have sufficient water pressure (greater than 3 bar).