IBC Water AST1257-940, Installation & Operating Instructions Manual

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AST1257-940 Page
3
To ascertain DAYS between regeneration periods the following data or estimations are
required.
(Let N be the number of days to be calculated)
.1.
ð
Water Hardness in mg/l call
ð
H
.2.
ð
Water Softener Hardness Removal Capacity
from Table 1 in grams
call
ð
C
.3.
ð
Daily Water Usage in litres
call
ð
D
For household situations allow 250 litres per person per day.
CALCULATION
N = 1000 x C
D x H
Select nearest lower whole number
If necessary consult your dealer or IBC Water Treatment for advice on setting up the
softener.
EXAMPLE
Household use for 6 people on 220 mg/l hard water using
Model AST1257 at 3990 grams capacity.
N = 1000 x 3990
1500 x 220
= 12.09 days
= 12 days
Note : Maximum number of days that can be selected is twelve (12).
WATER SOFTENER CALCULATIONS
MODEL AST1041-940