EN - 40
ENGLISH
Terminal
Description
TA terminal
TA input can be connected to a free contact of a chronothermostat or to the contacts
in parallel chiller/boiler of the electronic controls of the fan coils BI2 and BI2+. When
the contact is closed, all cooling, heating and domestic water production functions are
enabled. When the contact is open, only domestic water production remains active.
terminal 8
Input from SMART GRID or photovoltaic FTV1
terminal 9
Input from SMART GRID or photovoltaic FTV2
Relationship between mode of operation and the main contact inputs:
Terminal 1
Terminal 2
TA terminal
Description
Open
Open
Open
Standby
Open
Open
Closed
Standby
Open
Closed
Open
run and domestic only
Open
Closed
Closed
run and heating and domestic
Closed
Open
Open
run and domestic only
Closed
Open
Closed
run and cooling and domestic
6.3 - PHOTOVOLTAIC SYSTEM
The internal unit UI is equipped with two inputs for connection to a photovoltaic system. Parameter “ADDR341”
0
= disabled
1
= enabled
When one or both of the FTV inputs are closed, it is possible to automatically force the accumulation of
energy by requesting the internal unit to heat more (if in heating mode or in domestic water production) or
to cool more (if in cooling mode).
Parameter “ADDR347” cooling water delta
Parameter “ADDR348” heating water delta
Parameter “ADDR349” domestic water delta
6.4 - CHECK OF THE CIRCULATION PUMPS
During installation, the operation of the circulation pump can be forced for 15 minutes from the window on
the control display “Pumps”; in that way, air bleeding is eased in the final filling phase of water in the system.
The circulation pump can work in different modes depending on the needs of the system:
- Continuous operation of the pump (parameter ADDR221=OFF=0)
- Switching off upon reaching the desired temperature (parameter ADDR221=ON=1) and sampling every
ADDR237 minutes for one minute (parameter ADDR237=10 minutes, the pump will activate for one minute
every ten minutes).
When the system is in stand-by or with fulfilled set point, the anti block function of the system and DHW circuit
pumps is present; setting the parameter ADDR221=ON=1, the pump is activated every ADDR222 hours for
a time equal to ADDR223 seconds). The parameters above can be set in the window Service.
6.5 - AUXILIARY EXTERNAL HEAT SOURCE MANAGEMENT
In heating or domestic water production mode, set the parameter ADDR226=ON=1 and, if external ambient
temperature is lower than ADDR227 degrees centigrade, the control will provide for the replacement of the
heat pump with the activation of an output for enabling of an external heat source.
7 - USE
7.1 - PRODUCTION OF DOMESTIC HOT WATER
With SHERPA AQUADUE TOWER, thanks to a water/water integrated in the internal unit heat pump, it is possible
to produce domestic hot water at high temperature (up to 75°C) without the use of electric heaters, in parallel with
the conditioning function and independently from external air temperature. The production of domestic hot water,
Summary of Contents for Sherpa AQUADUE S3 E
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