Twin Parallel Systems - Pentair Autotrol 255 Installer Manual

Installer Manual 255/LOGIX 742-762-764 - Description

3.6.2. Twin parallel systems

Refill first option: off, Pr=0
Tank 1 and tank 2 are both in service position. Depending on the residual capacity, tank 1 or tank 2 will
initiate first a regeneration.
In this example tank 1 moves from service position to C1, then to C2, ... until C8 and comes back in the
service position. Tank 2 will not initiate a regeneration while tank 1 is not back in service.
Initiate again a regeneration, this time tank 2 will move through the cycles whereas tank 1 stay in
service.
C1
C2
C3
C4
22 / 92
Tank 1
Service
Tank 2
C8
C7
C6
C5
Ref. MKT-IM-021 / A - 20.02.2019
Service
Tank 2 will not initiate a
regeneration while tank
1 is not back in service