38
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/Delayed Regeneration - 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
Rate
Continuous
Soft Water
Efficiency
High
•
Ave
•
•
Low
Table 6 P16 = 1
Priority
Flow
Rate
Continuous
Soft Water
Efficiency
High
•
Ave
•
Low
•
Table 7 P16 = 2
Priority
Flow
Rate
Continuous
Soft Water
Efficiency
High
•
Ave
•
•
Low
Table 8 P16 = 3
Priority
Flow
Rate
Continuous
Soft Water
Efficiency
High
•
•
Ave
Low
•
