Dhw (Domestic Hot Water) Boost Function; Anti-Legionella Function; Heat Pump Circulator Function; Pump Anti-Block Function - Immergas TRIO PACK HYBRID 4 Instructions And Warnings

Zone 1-2 Definition/Room probe modul.
The system flow temp drops (it rises in case of cooling) when the
room temp. approaches the room setpoint. Modulation with room
probe can only be enabled in the presence of a zone remote device.
Make sure that the boiler parameter A5 Storage tank DHW (Do-
mestic hot water) activation offset is set to 3
3.12 DHW (DOMESTIC HOT WATER) BOOST
FUNCTION.
In order to activate the DHW (Domestic hot water) BOOST func-
tion, it is necessary to enable the boiler by changing the parameter:
Integration/Enable DHW (Domestic hot water) integration
and enabling the function by modifying the parameter:
DHW (Domestic hot water)/Boost Function

3.13 ANTI-LEGIONELLA FUNCTION.

The indoor unit is equipped with a function to perform a thermal
shock on the storage tank unit.
This function brings the generator temperature to the maximum
allowed with integrative boiler enabled.
The function is enabled via the menu:
Config. DHW (Domestic hot water)/Anti-legion. enabling.
The function is activated at the time set via the parameter:
Config. DHW (Domestic hot water)/Anti-legion.cycle time.
on the week day set on the menu:
Config. DHW (Domestic hot water)/Anti-legion.cycle day;
The maximum allowed duration of the function corresponds to
the value set in the parameter:
Config. DHW (Domestic hot water)/Max legionella time;
if the function is not completed within the maximum allowed
time, an alarm will be triggered.
IT IS possible to activate the function only with boiler
enabled and eventually a thermostatic valve must be
installed at the DHW outlet to prevent burns.

3.14 HEAT PUMP CIRCULATOR FUNCTION.

The operating mode of the heat pump circulator can be defined
via the parameter:
System definition/HP circulator mode,
by setting Max speed the circulator will always work at the speed
defined by the Maximum HP circulator speed;
by setting Modul the circulator will work at variable speed be-
tween the values defined by the Maximum HP circulator speed
and Minimum HP circulator speed with regulation logics aimed
at minimising consumption and ensure the temperature delta
between flow and return defined by the HP circulator T Delta
parameter.

3.15 PUMP ANTI-BLOCK FUNCTION.

The hydronic module has a function that starts up the pump at
least once every 24 hours for 30 seconds in order to reduce the
risk of the pump locking up due to prolonged inactivity.

3.16 3-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.
3.17 SYSTEM SETPOINT CORRECTION
FUNCTION.
In the presence of hydraulic disconnections on the system down-
stream of the appliance distribution circuit, it is possible to activate
a function that makes it possible to correct the request setpoint to
the generator to approach the set zone setpoint as much as possible.
The corrections can be made either in central heating / C.H. or
in cooling mode.
Activation takes place by setting the parameters:
System definition/Max central heating / C.H. correction
System definition/Max cooling correction
with a value > 0°C.
Following a demand, the correction begins after a time equal to:
System definition/Activation time
and continue by 1°C each:
System definition/Increase time
minutes.

3.18 PHOTOVOLTAIC FUNCTION.

Should the photovoltaic contact (contact "S39" Fig. 20) be closed,
the accumulated DHW is heated to a temperature of 60 °C via
heat pump operation.
In case of simultaneous DHW (Domestic hot water) and system
request, the system will decide which service to satisfy, in order
to ensure the best comfort.
Install a mixing valve at the storage tank outlet.
3.19 ZONE 2 SAFETY THERMOSTAT
FUNCTION.
In case of zone 2 installation, the safety thermostat installed on the
flow branch runs a check on the zone flow temperature; if the limit
is exceeded, the mixing valve closes leaving the circulator running.
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