Multiple Valves With Consecutive Regenerations (System #6); Duplex Alternating (System #7) - Pentair FLECK 3150 NXT Installer Manual

Installer Manual Fleck 3150 - NXT - Installation

5.7.3. Multiple valves with consecutive regenerations (System #6)

This system works with 2 to 4 valves and a meter.
During normal operation, the controllers of each valve display the time of day and the volume of water
remaining. The remaining volume is the total volume of the system. The remaining volume displayed
drops with water consumption to reach zero. When this happens, if no other valve is regenerating, the
master valve sends a locking signal and starts regenerating. If another valve is regenerating, the valve
will stay in service until the other goes back in service. As soon as the lead valve finishes its
regeneration cycle, the second valve starts regenerating, then the third and the fourth if applicable. A
manual regeneration can only be done on the lead valve and only if the others are not regenerating.
The regen can be trigged on a volumetric or remote signal.
Inlet
Outlet
Valve
Meter
Tank
Check valve

5.7.4. Duplex alternating (System #7)

This system works with 2 valves and a meter.
During normal operation, the controllers of each valve display the time of day and the volume of water
remaining. The remaining volume displayed drops with water consumption to reach zero. When this
happens, the regeneration starts immediately. The valve in service sends a signal to the valve in
standby that goes in service. Once this occurs, the first valve goes in regeneration.
Inlet
Outlet
Valve
Meter
Tank
Check valve
Ref. MKT-IM-010 / B - 28.05.2018 43 / 122