Always install the softener downstream of the main stop tap and upstream of the water heater (except for the outside tap and kitchen drinking tap, which should remain hard).
Install a bypass valve set. This allows you to switch back to hard water for garden taps or maintenance without disconnecting the unit. Connect the Lines:
Locate your main stopcock (usually found under the kitchen sink or near the water meter) and close it entirely. Open the lowest cold water taps in the house to completely drain the residual water from the system. Harvey Water Softener Repair / Rebuild [Water Softening] harvey hv3 water softener installation manual
: Always use block salt designed for your HV3. The unit is not designed to work with granular or tablet salt, which can block the tray and cause issues with the brine valve. Block salt is easy to carry, store, and load into the softener.
⚠️ Do not use generic water softener instructions. The HV3 uses an upflow regeneration valve that must be configured correctly – incorrect plumbing can bypass the resin bed entirely. Always install the softener downstream of the main
Some newer Harvey softeners offer WiFi connectivity features. If your unit includes these, check that:
Plumb the bypass set consisting of three separate valves: the inlet valve, outlet valve, and bypass valve. Connect the Lines: Locate your main stopcock (usually
A three-valve bypass system is critical. It allows you to isolate the water softener for maintenance or salt refills without cutting off water to the entire house. Cut the main supply line downstream of the stopcock. Install the , Outlet Valve , and Bypass Valve .