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If the parameter 5 is set to be 0, the disinfection function is disabled. Such operation is strictly
unrecommended; the manufacturer declines any responsibility for the data caused by a lack
or incorrect unit disinfection. If you desire to disable the disinfection cycle, you should ask the
maintainer about the consequences that may arise from this operation
It is strictly forbidden to change the default value of parameter 4. The parameters 4 and 5
control the anti-legionella cycle (temperature versus time). We recommend to respect the above
guidelines, if you want to change them. Please remember that to keep the temperature of the
tank water between 55-60°C in order to inhibit the bacterial proliferation (see Annex 13 of the
guidelines mentioned above).
The plant designer must keep in mind the legionella risk and should adopt all the measures for
prevention and control of water.
The user is RESPONSIBLE to periodically check the correct operation of the anti-legionella
cycle and to verify that during the disinfection, the setting temperature parameter is put to be 4
and is reached for the duration indicated by the parameter 5.
4.5.3 ON/OFF contact
When ON/OFF contact is closed, and the controller is ON, the unit can work and the running mode is decided by the
setting of the controller.
When ON/OFF contact is closed, but the controller is OFF, the unit can't work.
When ON/OFF contact is opened, but the controller is ON, the unit can't work.
If the controller is ON, and the ON/OFF status is changed from opened to closed, the unit will work by the previous
settings of the controller (auto-restart).
If the unit was previously in stand-by, in case the ON/OFF status is changed from opened to closed, the unit remains
in stand-by.
For setting the signal remotely, the parameter 17 must be adjusted to be 0 (default). The temperature setting is
depending on the parameter 20:
- P.20 = 0 (default), the temperature value introduced manually is compared with the maximum admissible temperature
value given by the climatic curve (which is eventually corrected by the compensation parameter P.19), and then the
unit will operate according to the lowest one of the comparison between both values.
- P.20 = 1, the setting temperature will be the same as the one introduced manually on the unit.
4.5.4 Contact for photovoltaic plant integration
The ON/OFF contact can be configured so that a photovoltaic plant, in max production periods, can be used to obtain
the max value of hot water by the unit (set the parameter 17 to be 1). When the contact is closed (activation by FV
plant), the tank setting temperature TS1 is increased to the max possible value, according to the settings of the
parameter P.20:
- P.20 = 0 (default), the temperature value introduced manually is compared with the maximum admissible temperature
value given by the climatic curve, and then the unit will operate according to the highest one of the comparison
between both values.
- P.20 = 1, the setting temperature will be equal to (65°C).
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