Thank you for pointing out the injector flow chart. That is for the draw cycle. It shows the venturi action. I'd like to understand what the injector does during the brine fill cycle, which is not shown in that chart.The Brine Fill flow limiting device should rightly be the BLFC button, NOT the injector.
To prevent resin fluidization during the combined Brine Draw/Slow Rinse stage of regeneration, an Upflow system will usually utilize a lower flowing injector compared to an equally sized downflow system.
To ensure the consistant and predictable flow rate needed for Brine Fill, the BLFC button utilized must be a lower flow rate than the injector. If you view the injector chart, you will see the 00 injector flow rate will depend greatly on water pressure and does not exceed 0.25 when water pressure is at the low end of the chart. To prevent the injector from limiting the BF rate, a 0.125 GPM BLFC will be most appropriate for each of the systems discussed above.
The BLFC button is directional as it is designed to compensate for a wide incoming pressure variance so as to provide a consistant Brine Fill flow rate. To function correctly, the BLFC button must be installed with the numbers facing toward the control valve.
During Brine Draw, the brine will flow around the sides of the BLFC button in addition to through the center hole. The BD flow rate is therefore governed by the injector's Draw rate which is to be greater than the BF rate.
Due to the the extra considerations and details needed to correctly configure an upflow system to acheive only minimal benefit for a residential sized system, the usual advice offered on this forum to those that ask in advance of purchase, is to obtain a downflow system.
The Hach 5B will provide essentually the same result whether the sample is diluted or not. The recommendation to dilute when hardness exceeds 30 gpg, is intended to reduce the quantity of indicator solution needed when hardness is excessive, which will therefore save you money.
Fleck 5800 injector flow charts. (Same as 5810)
The Backwash flow rate is governed by the Drain Line Flow Controller (DLFC) button. For a 10" diameter softener tank, the drain flow rate will typically be 2.4 -2.5 GPM, and 3.5 - 3.9 GPM for a 12" diameter tank.Back flow is limited by the separate BLFC,
Sorry, I meant DLFC. Understand. But unrelated to the brine fill.The Backwash flow rate is governed by the Drain Line Flow Controller (DLFC) button. For a 10" diameter softener tank, the drain flow rate will typically be 2.4 -2.5 GPM, and 3.5 - 3.9 GPM for a 12" diameter tank.
The flow diagrams provided, are those made available by Fleck.
As previously stated, your BLFC button needs to allow less flow to pass than the injector, otherwise, the injector will be the Brine Fill flow restrictor, which is improper.I'm curious what will happen if I remove the injector and go to the fill cycle. If flow increases, then the injector is the restriction.
So if you have violet #00 injector, why isn't your brine fill also limited by the injector? That was the root of my first post. Maybe I misunderstood your injector.As previously stated, your BLFC button needs to allow less flow to pass than the injector, otherwise, the injector will be the Brine Fill flow restrictor, which is improper.
Looking at the flow graphs for the injectors, you will see the injector flow rate will vary greatly depending on water pressure.why isn't your brine fill also limited by the injector?
I have learned a bit more about the injector.Looking at the flow graphs for the injectors, you will see the injector flow rate will vary greatly depending on water pressure.
I have the Fleck 5810 XTR2,so not the blue valve linked above. Thank you though. I'll dig more into the settings and play around.Confirm that your valve looks like the one in this photo, including the blue part:
Be sure that you did this step at the end of setting BF:
18. End of Master Programming Mode
Press the Extra Cycle button to save all settings and exit
Master Programming Mode.
Confirmed I am and have been set to "Downflow" and not Variable Refill. I wonder if this is an undocumented feature of the valve, a bug in the state machine programming. I've reached out to Pentair and will update if they respond.Big difference between XTR2 and SXT. I suggest that you look for a feature called
adaptive briningvariable refill, and turn that off.
This is awkward, but...
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