Pentair FLECK 3150 NXT - Page 27

Installer Manual Fleck 3150 - NXT - System sizing
Ref. MKT-IM-010 / B - 28.05.2018 27 / 122
To calculate the system mass capacity:
To calculate the system combined capacity:
To calculate the system volume capacity:
V
capacity
= C
capacity
/ TH
inlet
Caution
If a mixing device is set on the valve before meter, TH = TH
INLET
- TH
OUTLET
.
Having determined the previous capacity allows the operator to know the service cycle duration.
110 48.2 4.82 2.69
120 50.2 5.02 2.8
130 52.1 5.21 2.91
140 53.8 5.38 3.01
150 55.5 5.55 3.1
170 58.5 5.85 3.27
200 62.7 6.27 3.5
230 66.9 6.69 3.74
260 71 7.1 3.97
290 75.3 7.53 4.21
M
capacity
= V
resin
x C
resin ex
with:
M
capacity
: system mass capacity [g as CaCO
3
]
V
resin
: volume of resin [L]
C
resin ex
: resin exchange capacity [g/L
resin
as CaCO
3
]
C
capacity
= V
resin
x C
cor resin ex
with:
C
capacity
: system combined capacity [°f.m
3
or °dH.m
3
]
V
resin
: volume of resin [L]
C
cor resin ex
: corresponding resin exchange 
capacity [°f.m
3
/l or °dH.m
3
/l]
V
capacity
= M
capacity
/ TH
inlet
or
with:
V
capacity
: system volume capacity [m
3
]
M
capacity
: system mass capacity [g as CaCO
3
]
C
capacity
: system combined capacity [°f.m
3
or °dH.m
3
]
TH
inlet
: inlet water hardness [mg/L as CaCO
3
or °f or °dH]
Salt amount
[g/L
resin
]
Corresponding resin exchange
capacity in [g/L
resin
] as CaCO
3
°f.m
3
[per L
resin
]
°dH.m
3
[per L
resin
]