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FIRST STARTUP
ATTENTION
! Installation and initial startup of the unit must be carried out by qualified personnel, in compliance
with the current national regulations and any provisions of local authorities and bodies responsible for public health .
Before first startup, or before starting the system after a long idle period, it is necessary to carry out the following
preliminary checks regarding the electrical part and refrigerant part .
PRELIMINARY CHECK OF ELECTRICAL PART
N.B.: Disconnect the power by unplugging the machine before carrying out any electrical check.
Checks
• Make sure the electrical system complies with that given in the wiring diagram and that
the cable size is adequate .
• Make sure the power and earth wires are tightened on the terminals .
• Make sure the mains supply is adequate for the machine .
PRELIMINARY CHECK OF REFRIGERANT PART
• Make sure the unit is charged with refrigerant . The check can be carried out with portable pressure gauges for
freon, equipped with a 1/4" SAE swivel connector with vacuum pump connected to the service outlet of the cock .
The pressure read must correspond to the saturation pressure corresponding to ambient temperature .
• Do a visual check of the refrigerant circuit, making sure it is not damaged .
• Make sure the pipes are not dirty with oil (oil stains could suggest damage to the refrigerant circuit) .
General recommendations
In case of a fault and/or poor operation, turn the unit off, do not try to repair it . Contact professionally qualified
personnel . Any repairs, using only original replacements parts, must be carried out by qualified personnel, under
penalty of loss of conformity with MD 174/04. Failure to respect the above can compromise the unit's safety and
relieves the manufacturer of all liability .
In case of prolonged non-use of the water heater, make sure to:
- disconnect the power supply to the unit or, if there is a special switch ahead of the unit, turn it “OFF”;
- close the DHW system taps;
ATTENTION
! It is advisable to empty the unit if it is to remain unused in a room subject to freezing . This operation
must only be carried out by qualified personnel .
ATTENTION
! The hot water delivered at the taps at a temperature above 50°C can immediately cause serious
scalding . Children, the disabled and elderly are more exposed to this risk . Therefore the use of a thermostatic mixing
valve, to be screwed to the unit's water outlet pipe identified by the red collar, is advisable.
In
SOL
models, where the tank temperature could reach high values, the mixing valve becomes mandatory .
COMMISSIONING
