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It is always advisable to make an environmental impact assessment based on the power and sound pressure data given in the technical data
chapter and the sound emission limits based on the installaon area of the unit, with reference to the DPCM of 14/11/1997. An assessment must
also be made if the unit is installed in the vicinity of workers, according to D. LGS. 81/2008 Art. 189 and following.
4. HYDRAULIC CIRCUIT
The hydraulic connecons must be made in accordance with naonal or local regulaons; the piping can be made of steel, galvanised steel or
PVC. The pipes must be carefully sized according to the nominal water ow rate of the unit and the pressure drops of the hydraulic circuit. All
hydraulic connecons must be insulated using closed-cell material of adequate thickness. The chiller must be connected to the piping using new,
non-reused exible couplings. It is recommended to install the following components in the hydraulic circuit:
• Thermometers to measure the temperature in the circuit.
• Manual gate valves to isolate the chiller from the hydraulic circuit.
• Y-shaped metal lter and a dirt separator (installed on the return pipe from the system) with a metal mesh of no more than 1 mm (obligatory
to maintain the validity of the guarantee).
• Loading unit and discharge valve where necessary.
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