New fleck 5600sxt 48k settings advice on city water

[Mario85]

What are ideal setting for hard water value 7 (120 ppm). Hardware periodically with proper regeneration.

Here are the details of my system:
City water with sediment and carbon filter before softener,
4 people in the house.
Hardness test: 120 ppm - 7 gpg
5600sxt
1.5 cu. ft resin
.5gpm / 1.5lb salt/min blfc
Turbine flow meter

Any suggestions on setup would be helpful. Thanks !

Current settings

BLFC: .50 GPM 1.5LB
DF: GAL
VT: dF lb
CT: Fd
NT: 1
C: 36x1000
H: 7 (Water hardness measured - 120 ppm)
RS: SF
SF: 10
DO: 14
RT: 2:00
BW: 10
BD: 60
RR: 10
BF: 10
FM = t0.7 I believe this is default.

Also noticed softener tank & inlet , outlet pipe freeze how to fix that too ?

Installed in garage

 

[Reach4]

System info (not programmed)
salt lb/cuft = 7 ; A choice ( efficiency vs capacity)
BLFC = 0.5 ; Brine Refill rate GPM
cubic ft resin = 1.5 ; ft3 resin = (nominal grains)/32,000
Raw hardness = 7 ; including any compensation
People = 4 ; gallons affects reserve calc
Estimated gal/day = 240 ; 60 gal per person typical calc
Estimated days/regen = 19.7 ; Computed days ignoring reserve

Fleck 5600SXT Settings:
DF = Gal ; Units
VT = dF1b ; Downflw/Upflw, Single Backwash
CT = Fd ; Meter Delayed regen trigger
NT = 1 ; Number of tanks
C = 33.1 ; capacity in 1000 grains
H = 7 ; Hardness-- compensate if needed
RS = rc ; rc says use gallons vs percent
RC = 240 ; Reserve capacity gallons
DO = 28 ; 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 = 7 ; Brine fill minutes
FM = usually t0.7 ; flow meter, make note of what is there
===============================

Alternative C and BF pairs:
lb/cuft ; C= ; BF=
5 ; 27.3 ; 5
6 ; 30.0 ; 6
7 ; 33.1 ; 7
8 ; 36.0 ; 8
9 ; 38.5 ; 9

Also noticed softener tank & inlet , outlet pipe freeze how to fix that too ?

Installed in garage

Insulation and a heater.