Installer Manual Fleck 3900 - NXT - Installation
Ref. MKT-IM-015 / B - 08.06.2018 45 / 126
5.7.1. 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 or an external remote regen signal.
5.7.2. Multiple valves with lockout (System #5)
This system works with 2 to 4 valves.
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.The regen can be trigged on a
volumetric or remote signal.
Valve
Tank
Inlet
Outlet
Meter
Valve
Tank
Inlet
Outlet
Meter
Check valve
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