Hydraulic Connection - Italtecnica Sirio Manuel D'instructions

 FEATURES
 Constant pressure due to pump/motor speed regulation
 Energy savings due to less pump absorption
 Gradual pump start and stop reduces hammering
 Protection against dry running in the event of water shortage during intake
 Automatic reset in the event of dry running, with autonomous error condition recovery
 Efficient leakage monitoring to protect pump in the event of repeated restarts
 Anti- seize function
 Intelligent overload cut-out management for a longer duration of the inverter
 Digital display of pressure, current, voltage and frequency
 Operation/error status signalling via LEDs and on-screen alerts display
 Auxiliary contact for remote control, pair connection or double set-point
 Optional I/O board for additional input and output
 Soft-start can be enabled to allow a gradual start of the motor pump
 Possibility of interfacing multiple devices as part of the pressurisation units (from two to four)
 Operation with and without flow switch (in the event of water not perfectly clean or ferrous)
 DEVICE PROTECTION FEATURES
 Dry running
 Overpressure
 Power supply under-voltage
 Power supply over-voltage
 Output terminal short circuit
 Motor output amperometric control
 Internal overheating of the inverter (ambient temperature and IGBT temperature)
 Significant leakage with continuous motor pump restarts
 EMC
The product has been tested according to the standards cited in the declaration of CE compliance in one of the typical conditions
of use. Experience has however demonstrated that critical variations to the levels of EMC disturbances may occur by changing
the length of the cables, their position, the type of motor used, etc. When conditions of disturbance towards other devices occur,
contact the manufacturer to evaluate additional solutions to reduce electro-magnetic disturbance.
 INSTALLATION
 HYDRAULIC CONNECTION:
The Sirio must be installed on the pump delivery side, either upright or horizontally and respecting the flow direction shown by
the arrow on the cover. The pump outlet water flows through the device before being distributed to the various appliances
connected.
The water that enters the Sirio unit must not contain any impurities and/or other substances that could jam up the check valve
fitted inside it. To reduce this risk as much as possible, it is advisable to fit special filters on the intake side of the pump.
When it is not possible to guarantee the perfect cleanliness of the pumped fluid, it is advisable to deactivate operation of the
integrated flow switch (see page 25).
Install a small expansion tank (1-2 litres) after the Sirio, to limit restarts caused by any small leakages which are common in
most systems.
The pre-charge value of the tank must be suitable for the pressure values set. This will also help to keep the operation constant
in applications where water requirements are greater (e.g. for washing machines, toilet flushing systems, etc.).
On no account must a check valve be fitted between the Sirio and the motor pump or between the device itself and the user
appliances, as it could cause device malfunctions. When used with a submerged pump, the installation of a check valve before
the inverter is allowed, provided that it is positioned at least 3 metres from the inverter.
A check valve can be fitted on the motor pump intake pipe, though, to prevent it draining when the pump stops.
It is recommended that you do not install the equipment in shafts or watertight casing where heavy condensation can form.
CAUTION: when the pump stops, the conduits are still pressured so a cock must be opened to bleed the system before any
work is carried out.
Maximum cooling liquid pressure 7 bar – 101,5PSI!
Maximum cooling water temperature 35 °C!
Maximum ambient temperature 40°C
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