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3.10 PUMP ANTI-BLOCK FUNCTION
The hydronic module has a function that starts up the pump at le-
ast once every 24 hours for 30 seconds in order to reduce the risk of
the pump locking up due to prolonged inactivity.
3.11 THREE-WAY ANTI-BLOCK SYSTEM
The hydronic module has a function that activates the motorised
3-way unit 24 hours after the last time it operated by running a
complete cycle in order to reduce the risk of the 3-way blocking
due to prolonged inactivity.
3.12 RADIATORS ANTIFREEZE FUNCTION
If the system return water is below 4°C, the hydronic module star-
ts up until it reaches 42°C.
3.13 PHOTOVOLTAIC FUNCTION
If the photovoltaic contact (contact "S 41" Fig. 7) if closed, any
DHW stored is heated to a temperature of 50°C by means of heat
pump operation.
The storage tank is only heated with DHW control
In case of simultaneous DHW and CH system demands, the sy-
stem will decide which service to meet.
3.14 OUTDOOR UNIT DISABLE FUNCTION
With input active (contact "S 41" Fig. 7), external unit operation is
inhibited.
The demands can be met by any electrical resistances appropria-
tely connected and configured.
3.15 DIVERTER VALVE MANAGEMENT
(SUMMER / WINTER).
The unit electronics has a 230V outlet to manage the summer /
winter diverter valves.
The voltage output is active when the appliance is in Air-conditio-
ning mode.
3.16 ANTI-LEGIONELLA FUNCTION
The indoor unit is equipped with a function to perform a thermal
shock on the storage tank.
This function brings the generator temperature to the maximum
allowed with DHW integrative resistance enabled.
The function is enabled with parameter "P015".
The function activates at the time set on parameter P016, on the
weekday set on Parameter "P017"; the function can be activated
every day by setting "P017"="ALL".
The maximum allowed duration of the function is "P013" hours; if
the function is not completed within the maximum allowed time,
an alarm will be triggered.
The function can only be activated in presence of inte-
grative DHW resistance and eventually a thermostatic
valve must be installed at the DHW outlet to prevent
burns.
3.17 AUTOMATIC VENTING FUNCTION
In the case of new central heating systems and in particular mode
for floor systems, it is very important that deaeration is performed
correctly.
The function consists of the cyclic activation of the pump and the
3-way valve.
The function is activated in two different ways:
- Each time the heat generator is re-powered;
- Using parameter "M001".
In the first case, the function has a duration of 8 minutes and it can
be interrupted by pressing the "Reset" button (3). In the second
case, it has a duration of 18 hours and it can be interrupted simply
by switching the heat generator on.
Activation of the function is signalled by the countdown shown
on the indicator (14).
3.18 PREHEATING FUNCTION
In case of DHW or heating demand, if the water temperature is
lower than 20 °C, the operation of the integration electric resistan-
ce is forced until 25 °C are reached.
The function remains active for a maximum of 2 hours.
If needed, the function can be bypassed by disabling the system's
electric resistance.
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