Help with Fleck 2510sxt settings

[Helphelp]

Hi,

I have a Fleck 2510sxt 70,000 grains with 10% cross linked resin. Resin tank is 12x52 at 2cu/ft, brine tank 18x35.
On a city water with no iron, water hardness 8. 2 people. I am was hoping to get some guidance on how to best program the unit.

Thank you for any help you might give.

 

[Reach4]

An 18 inch diameter softener tank needs 9 gpm for backwash and rapid rinse. Be sure your water system can deliver that.
Oops... got confused.

 

[Sponsor]

 

[Bannerman]

12x52 at 2cu/ft,

A 12" diameter resin tank, typically will require 3.5 GPM for backwash.

 

[Helphelp]

An 18 inch diameter softener tank needs 9 gpm for backwash and rapid rinse. Be sure your water system can deliver that.

What is your hardness? How many people normally use the soft water?

8 and just 2 people

 

[Helphelp]

An 18 inch diameter softener tank needs 9 gpm for backwash and rapid rinse. Be sure your water system can deliver that.

What is your hardness? How many people normally use the soft

 

[Reach4]

One more question. What is the BLFC value? 0.5 gpm, or something else?

 

[Helphelp]

One more question. What is the BLFC value? 0.5 gpm, or something else?

Yes 0.5gpm

 

[Reach4]

Here is what I would suggest for a 5600 SXT, and I suspect your 2510 SXT has similar programming

System info (not programmed)​	​	​	​	​
salt lb/cuft​	=​	7.5​	;​	A choice ( efficiency vs capacity)​
BLFC​	=​	0.5​	;​	Brine Refill rate GPM​
cubic ft resin​	=​	2​	;​	ft3 resin = (nominal grains)/32,000​
Compensated hardness​	=​	8​	;​	including any compensation​
People​	=​	2​	;​	gallons affects reserve calc​
Estimated gal/day​	=​	120​	;​	60 gal per person typical calc​
Estimated days/regen​	=​	48.01​	;​	Computed days including reserve​
​	​	​	​	​
Fleck 5600SXT Settings:​	​	​	​	​
DF​	=​	Gal​	;​	Units​
VT​	=​	dF1b​	;​	Downflw/, Single Backwash, black cam​
CT​	=​	Fd​	;​	Meter Delayed regen trigger​
NT​	=​	1​	;​	Number of tanks​
C​	=​	46​	;​	capacity in 1000 grains​
H​	=​	8​	;​	Hardness-- compensate if needed​
RS​	=​	rc​	;​	rc says use gallons vs percent​
RC​	=​	120​	;​	Reserve capacity gallons​
DO​	=​	30​	;​	Day Override (30 if no iron)​
RT​	=​	2:00​	;​	Regen time (default 2 AM)​
BW​	=​	5​	;​	Backwash (minutes)​
Bd​	=​	60​	;​	Brine draw minutes​
RR​	=​	5​	;​	Rapid Rinse minutes​
BF​	=​	9​	;​	Brine fill minutes​
FM​	=​	____0.7​	;​	https://terrylove.com/forums/index.php?attachments/img_fleck5600sxt_flow-png.31592/

 

[Helphelp]

Here is what I would suggest for a 5600 SXT, and I suspect your 2510 SXT has similar programming

System info (not programmed)​	​	​	​	​
salt lb/cuft​	=​	7.5​	;​	A choice ( efficiency vs capacity)​
BLFC​	=​	0.5​	;​	Brine Refill rate GPM​
cubic ft resin​	=​	2​	;​	ft3 resin = (nominal grains)/32,000​
Compensated hardness​	=​	8​	;​	including any compensation​
People​	=​	2​	;​	gallons affects reserve calc​
Estimated gal/day​	=​	120​	;​	60 gal per person typical calc​
Estimated days/regen​	=​	48.01​	;​	Computed days including reserve​
​	​	​	​	​
Fleck 5600SXT Settings:​	​	​	​	​
DF​	=​	Gal​	;​	Units​
VT​	=​	dF1b​	;​	Downflw/, Single Backwash, black cam​
CT​	=​	Fd​	;​	Meter Delayed regen trigger​
NT​	=​	1​	;​	Number of tanks​
C​	=​	46​	;​	capacity in 1000 grains​
H​	=​	8​	;​	Hardness-- compensate if needed​
RS​	=​	rc​	;​	rc says use gallons vs percent​
RC​	=​	120​	;​	Reserve capacity gallons​
DO​	=​	30​	;​	Day Override (30 if no iron)​
RT​	=​	2:00​	;​	Regen time (default 2 AM)​
BW​	=​	5​	;​	Backwash (minutes)​
Bd​	=​	60​	;​	Brine draw minutes​
RR​	=​	5​	;​	Rapid Rinse minutes​
BF​	=​	9​	;​	Brine fill minutes​
FM​	=​	____0.7​	;​	https://terrylove.com/forums/index.php?attachments/img_fleck5600sxt_flow-png.31592/

Thank you Reach4. One question my system is 70000 grains, the suggested programming is set for 46000. What is the rationale for it.

 

[Reach4]

The marketing people generally call 1 cuft of resin 32000 grains of softening capacity. While resin can potentially do that, it is very inefficient with the salt.

But one thing... are they using 70000 to indicate that you actually have 2.19 cuft of resin? Or are they just stretching a number. You could ask.

I could go into more detail, but to get 64000 grains of softening out of 2 cuft of resin would take 20 pounds of salt per cuft, or 40 pounds each regen. With the 7.5 lb/cuft I suggest, it takes 15 pounds of salt each regen to get that 46000. So people generally suggest a more salt-efficient setting.
See https://terrylove.com/forums/index.php?threads/help-for-programming-fleck-5810.82673/#post-595983