Pentair FLECK NXT User manual

FLECK NXT
OWNER’S MANUAL
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MANUAL OVERVIEW
How To Use This Manual
This owner’s manual is designed to provide the equipment owner with instructions on performing routine care
and maintenance of the water softener or filter valve and control packaged with this manual.
This manual does not include instructions regarding installation, setup, service, or troubleshooting of the
valve, control, or other components of a water conditioning system. Please contact your local water treatment
professional with questions or concerns about the operation or performance of your water conditioning
system.
Icons That Appear In This Manual
WARNING:
Failure to follow this instruction can result in personal injury or damage to the equipment.
NOTE: This will make the process easier if followed.
General Warnings
WARNING:
There are no user-serviceable parts in the AC adapter, motor, or controller. Do not attempt to
remove or repair individual components.
WARNING:
Use only the power transformer supplied with this water conditioning system.
WARNING:
The power outlet must be grounded and always on. If it is necessary to disconnect power,
unplug the AC adapter from its power source.
WARNING:
Only fill the brine tank with salt designed for water softening.
WARNING:
Ambient temperature surrounding the system should be between 35°F (1°C) and 120°F
(49°C).
WARNING:
Unless equipped with hot water components water temperature flowing through the system
should be between 35°F (1°C) and 100°F (38°C).
Congratulations on the purchase of your new water
conditioning system featuring the NXT electronic
controller.
You will have peace of mind knowing your system will
bring you years of treated water use and enjoyment.
Your water conditioning system helps you:
Eliminate:
• Stains
• Scale Deposits
• Soap Scum
• Clogged Plumbing
• Dissolved Minerals
Enjoy:
• Longer lasting appliances (up to 30% longer)
• Less detergent / soap / cleanser use
• Greater lathering of soap
• Cleaner dishes, towels, and linens
• Softer skin
FEATURES OF YOUR WATER CONDITIONING SYSTEM
California Proposition 65 Warning
WARNING:
This product contains chemicals known to the State of California to cause cancer or birth
defects or other reproductive harm.
2 • Fleck NXT Owner’s Manual

FEATURES OF THE NXT CONTROLLER
• On-screen multilingual support: English, French, German, Portuguese, Spanish
• Time of day super capacitor backup for power loss
• Two-line/ 16 character full text LCD backlit display
• Shift button allows digit selecting
• LED Status indicator
• Blue: In service
• Flashing Blue: Regeneration Queued
• Green: Regeneration
• Flashing Green: Standby
• Red: Error with codes
System
Number
Valve
Address
Valve State
Flow
Indicator
Time
of Day
Shift Button
Adjusts Values to the Left
Up Button
Adjusts Values Up
Down Button
Adjusts Values Down
Volume Remaining
Status LED
Display Screen
Diagnostic Button
Extra Cycle Button
Fleck NXT Owner’s Manual • 3

SETTING TIME OF DAY AND
INITIATING A MANUAL
REGENERATION
Setting the Time of Day
1. Press and hold either the Up or Down button for
two seconds.
2. Press the Shift button to select the digit you want to
modify.
3. Press the Up or Down button to adjust the value.
4. Press the Extra Cycle button to return to the normal
display screen, or wait for a five second timeout.
Queueing a Regeneration
1. Press the Extra Cycle button. The Display Screen
will show “RGQ” as the valve status, indicating that
a regeneration is scheduled..
2. To cancel a queued regeneration, press the Extra
Cycle button.
Regenerating Immediately
Press and hold the Extra Cycle button for five seconds.
Figure 1 Up and Down Buttons
Figure 2 Shift Button
Figure 3 Extra Cycle Button
WARNING:
Before entering User Programming,
please contact your local water treatment
professional. For complete programming options,
refer to Master Programming Flow Chart.
Enter User Mode
• Press and hold the Up or Down buttons for 5
seconds.
Set Language Option
• Press Up or Down to select language.
• Press the Extra Cycle button to proceed to the
next step.
Set Feed Water Hardness
Press the Shift, Up, and Down buttons to move the
cursor and change the value of the numbers.
Press the Extra Cycle button to proceed to the next
step.
NOTE: Only displayed when a metered option is
chosen under System Type.
Set Regeneration Day Override
• To turn On and set the days, press the Down
button.
• Press the Shift, Up, and Down buttons to move
the cursor and change the value of the numbers.
• Press the Extra Cycle button to proceed to the
next step.
Regeneration Time
• Press the Shift, Up, and Down buttons to move
the cursor and change the value of the numbers.
• Press the Extra Cycle button to end user
programming mode.
USER PROGRAMMING
Figure 4 Select Language Screen
Figure 5 Feed Water Hardness Screen
Figure 6 Regeneration Day Override Screen
Figure 7 Regeneration Time Screen
4 • Fleck NXT Owner’s Manual

1
2
3
B
A bypass should be installed on all water conditioning
systems. A bypass isolates the conditioner from the water
system and allows unconditioned water to be used while
the conditioner is undergoing service or maintenance
procedures or if the conditioner is experiencing
performance issues. Figures 8 and 9 show the most
common bypass methods.
Knob Style Plastic Bypass Valve
This type of bypass is located directly behind the conditioner
valve on top of the media tank. To bypass the conditioner
system using this type of bypass, turn both of the knobs
on the sides of the bypass clockwise until the holes in the
knobs are facing up as shown in Figure 8 Knob Style Plastic
Bypass Valve.
To return the conditioner system to regular service, turn
both of the knobs on the bypass counter-clockwise back to
their original positions.
Manual Bypass
This type of bypass system is plumbed into the water
system, and generally consists of three valves: one on the
inflow line going into the conditioning system, one on the
outflow line coming out of the conditioning system, and one
on the bypass line connecting the inflow and outflow lines
(See Figure 9 Manual Bypass).
To bypass the conditioner system using this type of bypass
(following Figure 9 Manual Bypass), open Valve 2 and close
Valves 1 and 3.
To return the conditioner system to regular service, open
Valves 1 and 3 and close Valve 2.
BYPASSING THE WATER CONDITIONING SYSTEMBYPASSING THE WATER CONDITIONING SYSTEM
Figure 8 Knob Style Plastic Bypass Valve
Figure 9 Manual Bypass
Fleck NXT Owner’s Manual • 5

CONTROL OPERATION DURING A POWER FAILURE
The NXT includes integral power backup. In the event of power failure, the control shifts into a power-saving
mode. The control stops monitoring water usage, and the display and motor shut down, but it continues to
keep track of the time and day for a minimum of 8 hours.The system configuration settings are stored in a non-
volatile memory and are stored indefinitely with or without line power.
If power fails while the unit is in regeneration, the control will save the current valve position before it shuts
down. When power is restored, the control will resume the regeneration cycle from the point where power
failed. Note that if power fails during a regeneration cycle, the valve will remain in it’s current position until
power is restored. The valve system should include all required safety components to prevent overflows
resulting from a power failure during regeneration.
NOTE: After power is restored following a power failure, time of day will flash to indicate a power
interruption. Press the Extra Cycle button to resume normal operation.
The control will not start a new regeneration cycle without line power. If the valve misses a scheduled
regeneration due to a power failure, it will queue a regeneration. Once power is restored, the control will
initiate a regeneration cycle the next time that the Time of Day equals the programmed regeneration time.
Typically, this means that the valve will regenerate one day after it was originally scheduled. If the treated
water output is important and power interruptions are expected, the system should be setup with a sufficient
reserve capacity to compensate for regeneration delays.
CARE AND USE OF YOUR BRINE TANK (IF EQUIPPED)
Each time the softener regenerates, salty water (brine) is needed to recondition the media in the water tank.
The brine is pulled from the salt tank at a controlled amount. If the salt tank does not contain enough salt, the
brine is weak, the media will not fully recondition and untreated water will pass through. To ensure the highest
level of performance of your water conditioning system, please observe the following:
• Keep the brine tank filled with salt at all times. The salt level should always be higher than the water level
in the brine tank.
• Only use sodium chloride salt designed for water softeners. Other types of salt (rock or snow melting)
may contain dirt and chemicals that will affect the quality of your water and the performance of your
water softener.
• Keep the brine tank covered.
• Empty and clean the tank when enough debris accumulates interfering with operation of system.
• Water filters do not have brine tanks
6 • Fleck NXT Owner’s Manual

TROUBLESHOOTING
Detected Errors
If a communication error is detected, an Error Screen will alternate with the main (time of day) screen every
few seconds.
• All units In Service remain in the In Service position.
• All units in Standby go to In Service.
• Any unit in Regeneration when the error occurs completes Regeneration and goes to In Service.
• No units are allowed to start a Regeneration Cycle while the error condition exists, unless they are
manually forced into Regeneration.
• When an error is corrected and the error no longer displays (it may take several seconds for all of the
units in a system to stop displaying the error message), the system returns to normal operation.
NOTE: During the error condition the control continues to monitor the flow meter and update the volume
remaining. Once the error condition is corrected all units return to the operating status they were
in prior to the error. Regeneration queue is rebuilt according to the normal system operation. Or, if
more than one unit has been queued for regeneration, then the queue is rebuilt according to which
one communicates first.
Message Displayed Correction
Flashing time
Power outage. Press any button to clear flashing display. See SETTING
TIME OF DAY AND INITIATING A MANUAL REGENERATION to
reset time if needed. See CONTROL OPERATION DURING A
POWER FAILURE for more information.
Detected Error = Matching Address
Contact your local water treatment professional.
Detected Error = Program Mismatch
Detected Error = No Message #X
Detected Error = E2 Reset Unit
Test Mode
Black Squares on screen
INI on screen for more than 2 minutes
CHG on screen for more than 2 minutes
Common Issues
Problem Solution
Control valve fails to regenerate Check for power outage and verify unit is plugged in. Attempt to
perform a manual regeneration. See SETTING TIME OF DAY AND
INITIATING A MANUAL REGENERATION. If problem still exists,
contact your local water treatment professional.
Water does not feel or appear soft Check salt in brine tank and ensure salt level is above water
level. If problem still exists, contact your local water treatment
professional.
Unit uses too much salt
Contact your local water treatment professional.
Loss of water pressure
Iron in conditioned water
Excessive water in brine tank
Other problems with the water softener
Power Outage See CONTROL OPERATION DURING A POWER FAILURE for more
information.
Fleck NXT Owner’s Manual • 7

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DEALER STAMP
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