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4.
System sizing
4.1.
Recommendations
4.1.1. Injector/DLFC/BLFC-Valve configuration
Tank diameter
[in]
8
10
10
13
14
16
18
4.2.
Sizing a softener (single unit)
4.2.1. Parameter to be considered
Whenever installing a softener, it is preferable to have full water analysis to ensure the inlet water
content will not affect the resin bed.
A
Note
Please consult your resin manufacturer specifications to ensure that no additional
pretreatment prior to softening is required.
The below sizing method can be applied for both residential and industrial softeners.
The sizing of a softener must be based upon certain parameters:
•
Inlet water hardness;
•
Peak flow rate and nominal flow rate;
•
Service velocity;
•
Salt dosage.
The softening and regeneration reactions are driven under certain conditions. To allow these
reactions to take place, make sure that the velocity is convenient during the different phases for
proper ion exchange. This velocity is given in the resin manufacturer specifications sheet.
Ref. MKT-IM-003 / B - 19.04.2017
Resin volume
L
15
30
50
70
100
120
150
Installer manual Siata V132 - SFE - System sizing
Injector DF
No.
Washers
Brown
Blue
Blue
Red
Red
Black
Black
DLFC
[l/h]
1
350
2
480
3
700
4
950
4
950
5
1450
5
1450
[gpm]
1.5
2.1
3.1
4.2
4.2
6.4
6.4
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