Single Valve (System 4); Multiple Valves, Parallel Interlock System (System 5); Multiple Valves, Parallel Series Regeneration System (System 6) - Pentair Fleck 3150 NXT Installer Manual

Installer manual Fleck 3150 NXT/NXT2 - Installation
5.8.1

Single valve (System 4)

As named, this system works with only one valve. The regen can be initiated upon the treated
volume (delayed or immediate), time clock mode or an external remote regen signal or day of
week (NXT2 controller only).
Inlet
5.8.2

Multiple valves, parallel interlock system (System 5)

This system type may be used to build systems from 2 to 4 valves for NXT controller, 2 to 8 valves
for NXT2. Each valve must be equipped with a water meter.
All tanks in parallel are supplying treated water. Each unit in the system has its own flow meter.
The controller will delay the start of regeneration if another unit is already regenerating. Once that
unit has completed a regeneration cycle and returned to service, the unit with longest
regeneration queue time will begin regeneration. Only one unit regenerates at the time. Automatic
regeneration may be triggered by either volumetric immediate mean or external dry contact.
Inlet
5.8.3

Multiple valves, parallel series regeneration system (System 6)

This system type may be used to build systems from 2 to 4 valves for NXT controller, 2 to 8 valves
forNXT2. Only One water meter is required for the whole system.
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Valve
Tank
Valve
Tank
Outlet
Meter
Check valve
Meter
Ref. MKT-IM-010 / F - 16.01.2023
Outlet