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4.3 Hydraulic connections
OBLIGATION:
The execution of the hydraulic connection must be carried out by qualified personnel.
All the works, the choice of the components and the materials used must comply with the "Good
Practices", according to the regulations in force in the different countries, taking into account the
intended operating conditions of the system.
4.3.1
Hydraulic connection to water coils
4.3.2
Installation technical notes
The connection pipes must be suitably supported so that they do not weigh down on the machine.
Avoid rigid connections between the machine and the pipes, and install vibration dampers.
For temperatures values, minimum and maximum water flow rates and the volumes of water in the heat exchanger
water circuit refer to the technical bulletin.
4.3.3
Cleaning and filling the hydraulic circuit
OBLIGATION:
Wash the pipes of the hydraulic circuits to remove any processing residues and other dirt inside.
This operation must be performed to avoid damaging the parts of the machine.
After washing, check the hydraulic circuits for any leaks. To do this, load the circuits at a pressure higher than atmospheric
pressure and check that there are no pressure leaks over time.
INFORMATION:
The thermal insulation of the pipes outside the machine is the responsibility of the installer and must
only be completed after ascertaining that there are no leaks.
If other products are expected, in addition to mixtures of water and ethylene or propylene glycol, contact the manufacturer's
technical office.
Both the finned water coil and the water-cooled condenser have air vent valves:
•
Finned water coil: the vent valves are located at the front of the unit and are connected to the finned water coil manifolds.
•
Water-cooled condenser: the vent valve is located on the water outlet pipe of the condenser.
Installation, use and maintenance manual
58
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