CALEFFI LEGIOMIX 6000 series Installation And Commissioning Manual page 16

Programs
The operation of the controller during disinfection can be set according to different programs, selected
depending on the type of system and management of the system. Set the program, and the day and
time to turn on and turn off disinfection, in parameters in SETTINGS.
Program 0
Features continuous mixed outlet water temperature modulation with automatic disinfection in a time
band that can be set. Disinfection will run only when the Program Day (ProgDay) parameter has days
selected (default is no days) and the TimeOn and TimeOff parameters are filled in (default is 00:00 for
both). The return water temperature sensor is not used, but if present, it is used as a monitor only.
During the disinfection phase, the mixed outlet water temperature must remain above SET2 for a time
tDIS at least equal to tMIN, and if this occurs then disinfection has been successful. When this happens,
disinfection then stops. If disinfection is not successful, there is no alarm signal. If alarm indication for
unsuccessful disinfection is desired, use other programs.
Program 1A
Features continuous mixed outlet water temperature modulation with automatic disinfection in a time
band that can be set. Disinfection will run only when the Program Day (ProgDay) parameter has days
selected (default is no days) and the TimeOn and TimeOff parameters are filled in (default is 00:00 for
both). The return water temperature sensor is not used, but if present, it is used as a monitor only.
During the disinfection phase, the mixed outlet water temperature must remain above SET2 for a time
tDIS at least equal to tMIN, and if this occurs then disinfection has been successful. When this happens,
disinfection then stops. If the disinfection temperature is not reached or it cannot be maintained for a
sufficient period of time, the alarm for unsuccessful disinfection is generated. The alarm is recorded in
the log. The first time a button is pressed, the relay opens again. The other alarm indications are cleared
at the next successful disinfection.
Program 1B
This program can only be set if the return water temperature sensor is set at present. Identical to
the previous program (1A), the only difference is the successful outcome of the disinfection phase is
checked via the return water temperature sensor in relation to SET3 instead of via the mixed outlet
water temperature sensor in relation to SET2. As soon as conditions indicate successful disinfection,
disinfection then stops. If the disinfection temperature is not reached or it cannot be maintained fora
sufficient period of time, the alarm for unsuccessful disinfection is generated. The alarm is recorded in
the log. The first time a button is pressed, the relay opens again. The other alarm indications are cleared
at the next successful disinfection.
Program 2 (factory settings - default)
This program can only be set if the return water temperature sensor is used. By default, the disinfection
is not enabled (no days are selected). If days are selected during commissioning, it is identical to the
previous program (1B). The only difference is, if the return water temperature does not reach SET3
after a wait period (tWAIT) since the start of disinfection, the mixed outlet water temperature SET2 is
increased by a value equal to (SET3 - TR reached), considering that SET2 can not in any case exceed
the limit of SETMAX. This correction procedure (increasing only) of the disinfection SET is iterative: if
necessary, it is repeated in the time span defined by the TimeOn and TimeOff at each time interval
equal to tWAIT. As soon as conditions indicate successful disinfection, disinfection then stops. If the
disinfection temperature is not reached or it cannot be maintained for a sufficient period of time, the
alarm for unsuccessful disinfection is generated. The alarm is recorded in the log. The first time a
button is pressed, the relay opens again. The other alarm indications are cleared at the next successful
disinfection.
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