Yes, you want to get that Hach 5-B test.
Normally you adjust for maximum hardness, rather than average. Plus there is a high-hardness compensation factor.
You should have gotten 10% crosslinked resin with your city water. Do that if you ever get replacement resin.
Here are some tentative numbers:
System info (not programmed)
salt lb/cuft = 6.75 ; A choice ( efficiency vs capacity)
BLFC = 0.5 ; Brine Refill rate GPM
cubic ft resin = 2 ; ft3 resin = (nominal grains)/32,000
Compensated hardness = 20 ; including any compensation
People = 4 ; gallons affects reserve calc
Estimated gal/day = 240 ; 60 gal per person typical calc
Estimated days/regen = 9.18 ; Computed days including reserve
Fleck 5600SXT Settings:
DF = Gal ; Units
VT = dF1b ; Downflw/, Single Backwash, black cam
CT = Fd ; Meter Delayed regen trigger
NT = 2 ; Number of tanks
C = 44 ; capacity in 1000 grains
H = 20 ; Hardness-- compensate if needed
RS = rc ; rc says use gallons vs percent
RC = 240 ; Reserve capacity gallons
DO = 30 ; Day Override (28 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/
Revised based on number from
https://terrylove.com/forums/index.php?threads/help-for-programming-fleck-5810.82673/#post-595983
The less salt per cubic ft, the more salt efficient, but more hardness breakthrough.
BLFC 0.5
cubic ft resin 2
Alternative capacity (C) and brine fill (BF) pairs. Round C down.
lb/cuft C= BF= grains/pound of salt
4.5 36.0 6 5332
5.3 39.2 7 4982
6.0 42.0 8 4670
6.8 44.5 9 4393 **chosen above
7.5 46.6 10 4147
8.3 48.6 11 3925
9.0 50.3 12 3726
9.8 51.9 13 3546
10.5 53.3 14 3383
11.3 54.6 15 3234