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d) Opening limit switch reaching and T1<TSET. The mixer is unable to
reach the set value even if it is in the maximum opening position;
therefore the following symbol is displayed.
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The electronics must adjust the flow temperature through the actuator
in order to reach the working set-point. The electronic actuator adjusts
the flow so as to have a temperature centered in a suitable working
range, within which the fine and dynamic adjustment is made by the
thermostat. The water mixing temperature is set through the interface.
The management system always checks in real time the flow temperature
detected by the probe: if the flow temperature deviates excessively from
the set value, a correction is made through the electric motor. In the case
of installation with a return probe present, it is not used for the water
mixing temperature adjustment.
3 - Disinfection in progress:
a) Disinfection in progress with control on flow probe T1 (see table on
page 5). During disinfection, the following two screens are shown
alternating on the display. The alternating parts are in orange.
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b) Disinfection in progress with control on return probe T2 (see table
on page 5).
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In this mode, the device performs thermal disinfection, which consists in
raising the mixed water temperature for a defined period of time.
The following can be set:
- Days of the week for performing the disinfection
- Minimum disinfection temperature
- Disinfection start time
- Minimum stay time above the minimum disinfection temperature in
order to evaluate the successful outcome of the disinfection
- Maximum time within which it is possible to perform the disinfection
The disinfection can be:
- Programmed: it starts in the days and hours set
- Activated through the control: it can be controlled by the device from
the "Controls sub-menu" or remotely through optional board
- Activated by IN1 inlet
The disinfection in progress OUT3 relay and the recirculation pump
management OUT2 relay are always activated during the disinfection.
If the disinfection temperature does not last for sufficient time and the
maximum available time is exceeded, the disinfection will be considered
as failed by signalling the relevant alarm.
3
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t
1
t
2
Σ
t
s
> tmin diS
diS °C
CHECK ON DISINFECTION
Temperature [°C]
Time [s]
diS. dAY
Disinfection start
Disinfection end
t Hi diS
Maximum disinfection time
5
