Free cooling liquid chillers - axial fans - Semiermetic screw compressors
IDENTITY
Unit type
FREE COOLING liquid chiller
Condensation
Air
Installation
External
Refrigerant
R134a
Fans
Axials
Compressor
Semiermetic screw
Heat exchanger
Shell and tube
UNIT DESCRIPTION
This series consists of 10 sizes with cooling capacity from 315 to 1150 kW.
The refrigerant used is R134a.
STANDARD UNIT COMPOSITION
Structure heavy gauge galvanized steel with epoxy spray paint;
Compressors screw with stepless regulation;
Evaporator shell & tubes with thermal insulation and with anti-condensing insulation;
Condenser copper tubes and aluminium fins;
Free cooling with water coil on series at the condenser coil, 3 way valve on the water side and differential regulation at the temperature of the water and the external air;
Fans axial direct coupled complete with thermal overload protection and safety grills;
Refrigerant circuit made following 97/23/CE “PED” European law;
Electrical control panel in weather proofed housing, with terminal block, main switch, compressor contactors;
Microprocessor control for a complete management of the unit and the free cooling mode.
STANDARD ACCESSORIES
Electronic expansion valve
Phase control, on/off and general alarm free contacts
Differential pressostat on the water side
Crankcase heater, safety valve and refrigerant pressostats
MAIN ACCESSORIES
Low noise (LN) execution
Hydraulic kit versions, type A, A1, B, B1, “Y” water filter
Soft starter, remote control and RS485 card
Coil protection grills and coils anticorrosive treatments
Rubber antivibrating dampers