Fleck 5600SXT settings in Hot Climate?

Discussion in 'Water Softener Forum, Questions and Answers' started by ShouldaCalledAPlumber, Jun 24, 2020.

  1. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Set up my new Fleck 5600SXT this morning. Currently 103 degrees, on way to 110 today. Soft water system is in the garage, which gets even hotter when automobile engines are cooling down after use.

    Are there any tweaks to my settings that should be made to compensate for hot environments?

    System specs:
    Fleck 5600SXT
    2.0 cubic ft system (64,000 grain listed capacity)
    Brine fill rate 0.5 GPM
    Hardness: 18 (measured using Hach 5B)

    Water usage:
    325 gallons/day in summer (I have a high-pressure back-yard mister system that is used a lot)
    140 gallons/day in winter (2 people full time)

    Fleck 5600SXT Settings (Summer):
    DF = Gal ; Units
    VT = dF1b ; Downflw/Upflw, Single Backwash
    CT = Fd ; Meter Delayed regen trigger
    NT = 1 ; Number of tanks
    C = 40.0 ; capacity in 1000 grains
    H = 18 ; Hardness-- compensate if needed
    RS = rc ; rc says use gallons vs percent
    RC = 325 ; Reserve capacity gallons
    DO = 28 ; Day Override
    RT = 2:00 ; Regen time (default 2 AM)
    BW = 12; Backwash (minutes)
    Bd = 60 ; Brine draw minutes
    RR = 12; Rapid Rinse minutes
    BF = 8 ; Brine fill minutes
    FM = t0.7

    Fleck 5600SXT Settings (Winter):
    Everything is the same, except RC = 140
     
  2. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Forgot to mention I have C=40 as I'm trying to be as salt efficient as possible. Better for our local water company.
     
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  4. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Year round increase H to 20 for high-hardness compensation.You are using 6 lb of salt per cubic ft of resin. You could bump that later, and adjust C, if you later want a little softer.

    I wonder if it would make sense to increase your 3.5 DLFC to account for the warm water used for the backwash.

    Protect the plastic from UV... softener and plastic pipe.

    Revised based on numbers from https://terrylove.com/forums/index.php?threads/help-for-programming-fleck-5810.82673/#post-595983
    BLFC = 0.5
    cubic ft resin = 2

    Alternative C and BF pairs:
    lb/cuft ; C= ; BF=

    5.250 ; 39.2 ; 7 ;Less salt, but not as soft.
    6.000 ; 42.0 ; 8 ; like you use, but you could raise C.
    6.750 ; 44.5 ; 9
    7.500 ; 46.6 ; 10 ; An upgrade in softness, using just a little more salt/gallon of softened water
    8.250 ; 48.6 ; 11
    9.000 ; 50.3 ; 12 ;softer still, but more salt use
     
    Last edited: Jun 24, 2020
  5. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Hi Reach4 - thank you for the feedback!

    A couple of questions...

    "Increase 3.5 DLFC" - what is DLFC? Does it have something to do with BLFC = 0.5?

    My system seems to only allow me to change C in whole number increments. Is there a method to allow it to use decimals?

    I believe I'm protected from UV as the system is in an enclosed garage, not outside or in a carport.

    Is it best practice to set reserve capacity to average daily usage (ie for me: 325 in summer and 140 in winter), or should I consider increasing or decreasing RC?
     
  6. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    And this statement you made, "I wonder if it would make sense to increase your 3.5 DLFC to account for the warm water used for the backwash.", is directly on-point with my question - what (if anything) should be done to compensation for hot water? Do you have a link to more info regarding increase of water for backwash due to to warm water?
     
  7. Bannerman

    Bannerman Well-Known Member

    Joined:
    Mar 19, 2014
    Location:
    Ontario, Canada
    Backwash rates are usually based on 60-degree incoming water temperature. If the water temp is actually 70 degrees, then the DLFC flow rate should be increased by 10%, if 80, then increase by 20%.

    See the chart at the right of this link: https://view.publitas.com/impact-water-products/2018-catalog-final/page/154-155
     
  8. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Ah, thank you, @Bannerman!

    Just reviewed chart... "higher water temperatures require higher backwash rates". Might this be due to the lowered viscosity of warmer water? I think I remember that from my fluid dynamics class at ASU? (Although frankly, I don't remember much from ASU - its reputation in the late 70's early 80's as the #1 party school in the country was well deserved!) ;)

    And how does one change the DLFC flow rate on Fleck 5600SXT? Is it done programmatically, or by swapping out a part, or?

    Thank you again...
     
  9. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Swapping out a part -- the DLFC washer/button ("washer flow control"). Drain Line Flow Control. It is just inside where the drain line connects.

    Part# Drain Line Flow Control Washers
    19151 ...........................Washer Flow 1.0 gpm
    12085 ...........................Washer Flow 1.2 gpm
    12086 ...........................Washer Flow 1.5 gpm
    12087 ...........................Washer Flow 2.0 gpm
    12088 ...........................Washer Flow 2.4 gpm
    12089 ...........................Washer Flow 3.0 gpm
    12090 ...........................Washer Flow 3.5 gpm ** you probably have this one on your 12 inch tank
    12091 ...........................Washer Flow 4.0 gpm
    12092 ...........................Washer Flow 5.0 gpm
     
    Last edited: Jun 24, 2020
  10. Bannerman

    Bannerman Well-Known Member

    Joined:
    Mar 19, 2014
    Location:
    Ontario, Canada
    Warmer water has a lower density than cooler water which is the reason why the DLFC flow rate is to be modified when the water is substantially either warmer or cooler than 60 degrees F.
     
  11. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I think viscosity and density both will contribute. Both are negatively correlated with temperature for water.
     
  12. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Thank you @Reach4, for the list of part numbers and their GPM equivalents. Very helpful!

    Would you recommend I go from current 3.5GPM to 4.0 or 5.0?

    Should BW time (or any other setting) be altered if the DLFC is switched to 4.0 or 5.0?

    Related question - would keeping the 3.5GPM DLFC and increasing the time accomplish same end objective, or is it the force from the higher GPM that's needed to do the task?
     
  13. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Thank you @Reach4, for the list of part numbers and their GPM equivalents. Very helpful!

    Would you recommend I go from current 3.5GPM to 4.0 or 5.0?

    Should BW time (or any other setting) be altered if the DLFC is switched to 4.0 or 5.0?

    Related question - would keeping the 3.5GPM DLFC and increasing the time accomplish same end objective, or is it the force from the higher GPM that's needed to do the task?

    Lastly, is there a trick to entering "C" with decimals? ie: "46.6" vs "46" ?
     
  14. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    That is out of the 5600sxt service manual.
    Not at the moment. Did the link that Bannerman have that?

    I don't think that would affect any settings.

    This is a snip from the 5600SXT service manual Rev H. img_2.png
     
  15. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Wow, @Reach4, super helpful, thank you!
     
  16. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    So I just found out the average incoming cold water inlet temperature in my location is 60ºF:

    "Ground Water Temperature: The incoming cold water inlet temperature of the local approved potable water supply (municipal or well). For sizing purposes the incoming water temperature is estimated for the average annual year in Maricopa County. The ground water temperature of tap water varies throughout Maricopa County depending upon the location, elevation, and time of year. In order to properly size a water heater, the Department has determined based upon available ground water temperature map data that for the purposes of this guideline an average annual incoming potable tap water temperature of 60ºF shall be used. Note: 60°F is also the average year-round ground water temperature in most of the Southwest, Southern California, the Southwest and Gulf states."
    Source: Maricopa County Environmental Services
    https://www.maricopa.gov/DocumentCenter/View/5888/Hot-Water-Supply-Requirements-PDF
     
  17. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Is there a best flow meter type for measuring of very low flow?

    My patio mister system, which is plumbed to receive soft water, consumes 0.77 GPM. While I've only had the Fleck 5600SXT up for 2 days now, I have noticed that sometimes the Flow Meter (3/4" turbine) does not register anything flowing at all, and sometimes it shows 0.6 GPM.

    Here's the breakdown of behavior:

    When mister system is turned on while no other water is being used, it will start metering sometimes, and other times it will not start metering. If it does start metering right away, it will continue to meter as long as misters are on. If it doesn't start metering right way, it never starts metering, UNLESS another source of water is used (kitchen sink, toilet, whatever). In this case, from the moment the additional water source is used (and even after that source stops) it will continue to meter. It's makes me think maybe it needs a "jump start" or a "boost" to get it spinning, but once spinning, seems to be fine.

    The Distributor from whom I purchased from says 3/4" turbine in 5600SXTshould meter beginning at 0.25GPM.

    Potentially manufacturing debris in turbine?
    Other potential issues?
    Maybe a different meter type would be better for very low flow conditions?
    Any suggestions?

    (Etiquette question: Should I have started an new thread for this? If so, my apologies. I'm a new poster, so trying to learn the ropes!)
     
  18. ditttohead

    ditttohead Water systems designer, R&D

    Joined:
    Jan 9, 2012
    Occupation:
    Water systems designer, R&D, Technical Director
    Location:
    Ontario California
    The 5600 turbine is one of the best for low flow.
    If it is a real 5600 and not a counterfeit. I w
    ould recommend removing the turbine and checking it for debris.
     
  19. ShouldaCalledAPlumber

    ShouldaCalledAPlumber New Member

    Joined:
    Jun 24, 2020
    Location:
    Scottsdale, Arizona
    Thank you, @ditttohead Very helpful to also include the video on how to do it!
     
  20. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I had wondered if the paddlewheel would be almost positive displacement. Apparently not.
     
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