Installer Manual Fleck 3900 - NXT - System sizing
Ref. MKT-IM-015 / B - 08.06.2018 33 / 126
To calculate the refill duration:
The refill flow rate is controlled by the refill controller (BLFC). The relation between the BLFC size,
the tank size and the resin volume is given in the valve specifications.
To calculate the refill duration:
Note
When calculating the time required to draw the brine, take into account that the volume of
brine [V
brine
] will be 1.125 bigger than the volume of water refilled.
4.3. Defining salt quantities
The salt settings are controlled through the controller programming. See chapter 4.2.3. Resin
exchange capacity and capacity of the unit, page 28.
T
refill
= V
WB
/ Q
BLFC
with:
T
refill
: refill duration [min]
V
WB
: Volume of water to be refill to prepare the brine [L]
Q
BLFC
: BLFC size [L/min]
V
WB
= D
Salt
x BV / S
sol
with:
V
WB
: Volume of water to be refill to prepare the brine [L]
D
Salt
: Salt dosage per litre of resin [g/L]
BV: Bed volume [L]
S
sol
: 360g/L - Solubility of salt per litre of water
To Next Page
Loading...
