48ES and 51ES NXT Stager Controller - Pentair Residential Filtration

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SYSTEM OPERATION IN SERVICE(SYSTEM 14-DEMAND)The system operates as part of a multi-tank regenerationsystem. This example applies to either a 2, 3 or 4 tank system.Each tank in the system will have an active flow meter input,even in Standby.The number of tanks In Service depends on the flow rate.Examples of a Four-Unit System:1. One Tank is In Service at all times (the "primary tank").5. The third tank returns to Standby as demand decreasespast the second trip point.1 2 3 41 2 3 4In Service(Primary Tank)Standby2. The total flow rate to the primary tank increased past thefirst trip point programmed rate. The flow stayed pastthe trip point delayed time. The next tank (least volumeremaining) changes from Standby to In Service. This thensplits the total flow between two meters.First Trip Point(Primary Valve)1 2 3 4In ServiceTotal Flow SplitBetween Two MetersStandby3. The flow rate demand decreased below the first trip point.The tank returns to Standby.Flow Split BetweenTwo MetersStandby6. Tanks return to Standby due to decreased total flow rateand trip points programmed. The tank with the mostremaining volume will be the first to go into Standby.1 2 3 4Full Capacity4th in Standby(Primary Valve)3/4 Capacity3rd in Standby1/2 Capacity2nd in Standby1/4 Capacity1st in Standby7. The primary tank regenerates. The next tank with the leastremaining volume becomes the new primary tank. The tankwith the next least volume remaining will be the first trippoint programmed rate. Tanks continue operating in thisorder.System Operation in Regeneration:1 2 3 4Flow Rate DemandBelow First Trip Point(Primary Valve)1 2 3 4Standby4. Total flow rate demand increased past a second trip pointprogrammed rate. The second and third tank (least volumeremaining) changes from Standby to In Service. The totalflow is split between the three meters.Full Capacity4th in Standby3/4 Capacity3rd in Standby1/2 CapacityFirst Trip PointProgrammed Rate1/4 CapacityNew Primary TankIf two tanks are In Service and both reachVolume Remaining = 0, the other two tanks will shift fromStandby to In Service. The lead tank withVolume Remaining = 0 will start Regeneration. The secondtank with Volume Remaining = 0 will enter Standby. If flowincreases past the trip point a third tank needs to enter InService. The tank in Standby with Volume Remaining = 0 willshift into In Service to maintain a steady flow. Operating forextended periods in this mode may degrade the water quality.1 2 3 4Flow Split BetweenThree MetersStandby4 • NXT Stager Controller AU11
TIMER DISPLAY FEATURESValve State(SBY, SRV, INI, LCK)ValveAddressSystemNumberFlowIndicatorTimeof DayDisplay ScreenTime of Day alternateswith Error ScreenExample: Valve #, VolumeRemaining, ErrorsVolume RemainingDiagnostic ButtonView Flow Rate, Peak FlowRate, Totalizer, HoursBetween Last TwoRegenerations, Hours SinceLast Regeneration, AdjustableVolume Remaining, ValvePosition, Send & ReceiveErrors, Software VersionExtra Cycle ButtonCycle Valve inRegeneration/CycleProgramming StepsShift ButtonAdjusts Values to the LeftUp ButtonAdjusts Values UpNETWORK/COMMUNICATION CABLES& CONNECTIONSUse a CAT5 Network/Communication cable.Connect the network/communication cable to either port beforeprogramming.The maximum cable length between timers is 100 feet.Connect units together from one communication port to thenext communication port. The order is not important.GroundLockRegen Communication PortsStatus LEDValve StateFigure 1Down ButtonAdjusts Values DownINI (Initializing) - INI will display on the screen for 30 to45 seconds when initializing after a power failure reset orprogramming.RGQ (Regeneration Queued) -RGQ indicates that the reservehas been entered in a delayed system and regeneration hasbeen queued. When in the main screen, press the Extra Cyclebutton to toggle service (SRV) with RGQ.Service (SRV) - SRV will display when the unit is In Service.LCK (Lock) - Lock will be displayed when contact closure isapplied across the interlock terminals on the circuit board. Seethe “Network/Communication Cables & Connections” section ofthis manual.LED Status LightsBlue LED - Illuminates while the unit is In Service and noerrors exist. The unit will always be In Service unless aregeneration trigger has occurred (green LED light will bedisplayed). A blinking blue light indicates the timer is In Service,and queued for regeneration.Green LED - Illuminates when the unit is in Regenerationmode. A blinking green light indicates the timer is in Standby,and not in Regeneration.Red LED- Illuminates when there is an error.Flow IndicatorA rotating line (appearing as a rotating star shape) will displayon the screen when flow is going through the meter.Figure 2 Current NXT Circuit BoardNXT Stager Controller AU11 • 5
Page 1 and 2: 48ES and 51ES NXT Stager Controller
Page 8 and 9: TRIP DELAY 1:30 SECONDSMASTER PROGR
Page 10 and 11: NXT Multi LanguageProgramming Param
Page 12 and 13: PLUMBING DIAGRAMS continued4 Positi
Page 14 and 15: SOLENOID USESolenoids only required
Page 16 and 17: BOTTOM DETAIL VIEWSTAGER CONTROLLER
Page 18 and 19: TROUBLESHOOTINGDetected ErrorsIf a
Page 20: © 2011 Pentair Residential Filtrat

48ES and 51ES NXT Stager Controller - Pentair Residential Filtration

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