Programming 43
Cat. No. 01016370
The programming process requires various types of data input. The following information pertains to calculating the soft-
ening capacity of the water softening system and setting the brine refill rate (time).
Capacity Settings
The capacity of a water softener is determined by two factors; resin amount and water chemistry. Appendix A Table 15 on
page 93 will define the system capacity for the CSM water softeners at varying salt dosages.
Single Tank Systems
Normally a single tank system has enough resin capacity to soften water for a minimum period of 24 hours. Time of regen-
eration is usually set to occur very early in the morning or at a time when no softened water is Required. This is because
when the softener is regenerating, hard water is typically bypassed through the system and into the facility if a demand for
water if present.
If regeneration is desired at a time of day when there is no water usage then the system must have a “reserve”capacity
which must last an entire day if the regeneration signal (time clock, Aqua-Sensor and/or meter) occurs at the beginning of
the day. Subtract this reserve capacity from the total capacity to determine “capacity to signal”.
NOTE If the reserve capacity is more than 1/3 of the total capacity, a meter system may not reduce salt con-
sumption relative to a timeclock system.
Multiple Tank Systems
Multiple tank systems offer the benefit of continuous soft water supply. When using the Aqua-Sensor to initiate a regen-
eration sequence, the system capacity may be set for the maximum amount the system is capable of producing. However
multiple tank systems using only water meters and or time clock as the basis for regeneration initiation are recommended
to be set up with a 10% reserve capacity. The purpose of the reserve capacity in multiple tank systems is to allow for
subtle changes in water chemistry.
Determining Batch Set Point
To determine the batch set point for programming the Culligan MVP controller, use the following formula:
Gallons =
Total Capacity - Reserve Capacity
Hardness
Time Refill Valve (AUX 1) Setting
Appendix A, "Table 15. CSM Refill Minutes/Salt Dosage/Capacity" on page 93 provides the suggested refill flow rate
and program time for the Aux 1 programming step of the MVP controller (See page 48, Programming Step 14).
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