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Thread: Programming an 5600SXT for maximum effenciency

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  1. #1
    DIY Member ByteMe's Avatar
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    Default Programming an 5600SXT for maximum effenciency

    Hello all,

    I recently purcased and installed a softener system from OhioPureWaterCompany. There were zero problems with the order and it shipped the next business day.

    What I have;

    SKU: SKU7221
    Product: Fleck 5600SXT Electronic 3/4 Inch Meter On Demand Control Valve Water Softener 64000 Grain Capacity with Vortech Technology
    Qty: 1
    Selected options:
    Fleck Valve Connection: 3/4 Inch Stainless Bypass Valve
    Tank Color Option: Almond
    Brine Tank Size: 18x33 Round Brine Tank
    Softening Resin (2.0 cuft): SST60 Resin


    12x52 Vortech resin tank
    2.0 cubic feet of resin
    13 gpm service flow rate
    3 gpm backwash flow rate


    Yes I specifically bought the Vortech tank and SST60 resin.


    As per http://www.qualitywaterassociates.com/sizing.php
    I currently have two people in the house (me and wife) with a compensated hardness of 40 gpg. Using the above linked tool, I get;

    Based on the information you entered, 4800 is your Daily Grains of Capacity needed. 38400 is the Total Grains of Capacity you need for approximately once per week regeneration with a 24 hr reserve. 2 is the minimum cubic foot size of softener required for your capacity needs.

    So far so good. My Iron is less than 2 ppm. I want to reprogram my system to achieve a good salt efficiency without major drawbacks. The 6 Pounds of salt Per Cubic Foot of Resin seems to be good.
    I have read through the 5600SXT manual, how do I program it to achieve this setting? I understand that it will electronically be set as a 40,000 grain system.

    Sorry, question two.
    I have cut the brine well tube to be 9 inches above the top of the slotted air check. As per instructions provided by OPWC, I have the refill time set to 12 minutes (14 minutes for regular resin). My concern is that the float cuts off the refill water coming in with 4-5 minutes left. Is this an issue? Is this because I have great water pressure (never tested but can tell it is strong)?

    I am thinking about adding a sediment and charcoal filter to this system. Will post about this some other time.

    *edit* Using the meter built into the 5600SXT, I have a peak flow of 9.1 gpm using the bathtub in the master bedroom (opposite end of house) (hot and cold) on full blast.


    *edit 2*

    Ok, after more reading, it seems the setting that effects the "salt efficiency" is the BF or brine fill setting. It seems I should set this to 7 and set the capacity of the softener 40 or 40,000. Is this it? Even at the seven minutes, my brine tank will fill up to the point of stopping because of the float valve. What am I missing?
    Last edited by ByteMe; 11-11-2012 at 02:59 PM.

  2. #2
    DIY Member ByteMe's Avatar
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    I have another question related to the above. Does the 5600SXT actually meter the amount of water put into the brine tank? If not, wouldn't this be a chance for the manufacturers to improve upon this process and exactly be able to control the amount of brine used for regeneration? The side effect would be to shorten the whole regeneration cycle. It seems to me that 60 minutes for the brine rinse is much more than what is really needed.

    Just thinking out loud.

  3. #3
    DIY Member ByteMe's Avatar
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    I think i have found it, http://www.caitechnologies.com/image...pecs/SST60.pdf.

    Ok, bear with me, my OCD has taken over.

    Using the 1st posts information and the link above;

    I figure using 6lb of salt per cubic foot of resin for regeneration is a good balance for salt efficiency/capacity/leakage. For the experts out there please verify my thinking/numbers. All my thinking and numbers come from the above link provided by the manufacturer.

    Correction factors figured at the end.
    As per figure 3 ; My pressure drop at a maximum 10GPM and 41F should be a bit less than .8psi because of the resin (control valve pressure drop not included)
    As per figure 4 ; My backwash resin bed expansion at 10GPM and 77F should be a minimum of 70%. Does the 5600SXT have a restrictior on the backwash rate?
    As per figure 5 ; The operational capacity per cubic foot of resin using 6lb salt efficiency is 22,500.
    As per figure 6 ; My leakage rate using 6lb salt efficiency should be right at .6ppm .

    As per figure 7 ; The correction factor for capacity @40 gpg using sodium is 17.2*40= 684ppm. So about 94% for a correction factor. The chart is not real good for determining an exact number. Did I do this correct?
    As per figure 8 ; The correction factor for capacity for total hardness is also about 94%. Correct ?
    As per figure 9 ; The correction factor for capacity at a flow rate of @10GPM ( I use 5 GPM because I have 2 ft3 of resin) (worst case I think) is = 94%
    Someone please help me understand figure 10 the correct factor for leakage.

    So,

    Capacity = 22,500 * 94% * 94% * 94% = 18,688

    So if I set me 5600SXT to a 19k capacity. HOW THE FLOCK DO I SET THE BRINE FILL TO ONLY USE 12lbs OF SALT?


    *edit* Double the above to 37,376 total capacity, I forgot to figure 2 ft3 of resin.
    Last edited by ByteMe; 11-11-2012 at 08:06 PM.

  4. #4
    DIY Member ByteMe's Avatar
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    Using the same link as the previous post under "STANDARD OPERATING CONDITIONS";

    Backwash amount should equal 1.5-4 BV (figuring 7.5 gallons per ft3) would be 11.15 - 30 gallons per cubic foot, times two = 22.3- 60 gallons = @10 gpm flow 3-6 minutes time


    Sorry folks, that is it for today.

  5. #5
    That's all folks! Gary Slusser's Avatar
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    The valve times the flow controlled flow of refill water and we get 3 lbs per gallon of water or 1.5 lbs/min. So you set the number of minutes of refill.

    You don't cut the brine well tube, you adjust the height of the float so it stops the water flow into the tank before it overflows the tank. Otherwise the float stops the water flow before you get the right number of gallons of water to dissolve the number of lbs of salt you need per regeneration for your k of capacity and you don't regenerate all the capacity that you used between regenerations.

    Both brine line and drain line flows are flow controlled so I'm thinking all that 94% stuff is useless, plus I've never heard of any of that. Bed volumes yes but you are way deeper into a softener than you need to be.
    Gary Slusser Retired (= out of business)
    Click Here to learn how to correctly size or program a water softener.
    CAUTION, as of Nov 12 2013 all YouTube videos showing how to rebuild a Clack valve have an error in them that can cause damage.

  6. #6
    DIY Member ByteMe's Avatar
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    So the 1.5lbs of salt consumption is figured just by time (per minute) ?

    With the high pressure I have, how can this be accurate?

    I had to cut the brine well tube because the float was attached to the bottom. I could of raised the tube but then I would not of been able to put the lid back on. The instructions even said to cut it.

    As far as being "way deeper" into the softener than needed. Sure, you are completely correct.... but then people buy cars that can do way more than the highest speed allowed on any roads. I have learnt to accept my engineering dispositioned personality (or as some people call it... analness). I prefer to think of it as passion.

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