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Optionals:
Special voltage.
Water-cooled condenser: units equipped with water-cooled condenser are also provided with a pressure controlled water valve, a fixed calibration high pressure switch (even on single-phase units), as well as a compressor cooling fan (low temperature units only).
Voltage monitor.
High pressure switch (only for voltage 230/1/50, except for model SVN2122).
Condenser fan pressure switch.
Switchboard heater.
Crankcase heater.
Supplemental solenoid valve (on the discharge line of both medium and low temp. units, recommended in case they are exposed to low ambient temperatures).