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1 - SAFETY CONSIDERATIONS
1.1 - Safety guidelines
Installation, start-up and servicing of equipment can be hazardous
if certain factors particular to the installation are not considered:
operating pressures, presence of electrical components and
voltages and the installation site (elevated plinths and built-up
structures).
Only properly qualified installation engineers and highly qualified
installers and technicians, fully trained for the product, are
authorised to install and start-up the equipment safely.
During all servicing operations all instructions and recommendations
which appear in the installation and service instructions for the
product, as well as on tags and labels fixed to the equipment and
components and accompanying parts supplied separately, must
be read, understood and followed.
Failure to comply with the instructions provided by the manufacturer
may result in injury or product damage.
■ Apply all standard safety codes and practices.
■ Wear safety glasses and gloves.
■ Use the proper tools to move heavy objects.
■ Move units carefully and set them down gently.
2 - CONTROL OVERVIEW
2.1 - Control system
The SmartVu
system controls the start-up of the compressors
TM
needed to maintain the desired heat exchanger entering and
leaving water temperature. The controller serves as a user interface
and a configuration tool for controlling the operation of the unit.
SmartVu
constantly monitors safety devices that protect the unit
TM
against failure and guarantee its optimal functioning.
2.2 - Operating modes
The control can operate in three independent modes:
■ Local mode: The unit is controlled by commands from the user
interface.
■ Remote mode: The unit is controlled by dry contacts.
■ Network mode: The unit is controlled by network commands
(CCN / BACnet / Modbus). Data communication cable is used
to connect the unit to the CCN communication bus.
When the control operates autonomously (Local or Remote),
it retains all of its control capabilities but does not offer any of the
features of the Network.
Emergency stop! The Network emergency stop command
stops the unit regardless of its active operating type.
1.2 - Safety precautions
Only personnel qualified in accordance with IEC (International
Electrotechnical Commission) recommendations may be permitted
access to electrical components.
It is particularly recommended that all sources of electricity to the
unit be shut off before any work is begun. Shut off the main power
supply at the main circuit breaker or isolator.
IMPORTANT: This equipment conforms to all applicable codes
regarding electromagnetic compatibility.
RISK OF ELECTROCUTION! Even when the main circuit
breaker or isolator is switched off, specific circuits may still
be energised as they may be connected to a separate power
source.
RISK OF BURNS! Electrical currents may cause components
to get hot. Handle the power cable, electrical cables and
conduits, terminal box covers and motor frames with great
care.
IMPORTANT: Some specific safety precautions should be
taken in case of HFO units. For more information about
handling the equipment safely, please refer to the IOM Unit
documentation (Installation, Operation and Maintenance
instructions).
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