GE 255 Regeneration Modes for Parallel Systems, P16 = Priority Flow Continuous Efficiency

Regeneration Modes for Parallel Systems

Parameter P16 is used to determine the method for demand initiated regeneration. Four regeneration modes are possible.

•P16 = 0, Delayed Regeneration with a Smart Reserve Regenerations will start only at the Time of Regeneration entered in P2. A tank is regenerated if the capacity remaining in that tank is below the minimum required capacity needed to meet the next days calculated water usage requirement. The next days water usage number is based on the daily average water usage held in memory plus a 20% reserve. If necessary both tanks will be regenerated sequentially beginning with the most exhausted tank. This option allows the control to vary the reserve, and therefore the decision to regenerate, based on the actual daily water usage pattern for the location at which it is installed. See Table 5.

•P16 = 1, Delayed Regeneration with a Fixed Reserve Regenerations will start only at the Time of Regeneration entered in P2. A tank is regenerated if the capacity remaining in that tank is below the percentage entered in P17.

If either tank’s capacity is overrun by 50% a regeneration will take place. The control will also cause both tanks to be regenerated sequentially the next Time of Regeneration regardless of how much water is used during that 24 hour period. This feature is to help recover a severely exhausted bed. See Table 6.

•P16 = 2, Immediate Regeneration - Fixed Reserve/DelayedRegeneration- Smart Reserve This option uses the features of both option 0 and option 3. This is the most versatile of regeneration options. Option number 2 provides all the advantages of variable reserve based on the actual amount of water that is used each day plus the capability to react to the excessive water usage days that occur occasionally. See Table 7.

•P16 = 3, Immediate Regeneration - Fixed Reserve Regenerations are started immediately when a tank reaches zero or when the system capacity remaining (capacity remaining in both tanks) drops below the reserve capacity programmed in P17. To prevent hard water this reserve should be set large enough to provide conditioned water during the regeneration of the most exhausted tank. See Table 8.

Table 5 P16 = 0

Priority	Flow	Continuous	Efficiency
	Rate	Soft Water
High	•
Ave		•	•
Low
Table 6 P16 = 1
Priority	Flow	Continuous	Efficiency
	Rate	Soft Water
High	•
Ave		•
Low			•
Table 7 P16 = 2
Priority	Flow	Continuous	Efficiency
	Rate	Soft Water
High		•
Ave	•		•
Low
Table 8 P16 = 3
Priority	Flow	Continuous	Efficiency
	Rate	Soft Water
High		•	•
Ave
Low	•

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