EPSILON - Chiller

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TECHNICAL CHARACTERISTICS EPSILON Air-cooled liquid chillers with rotating type compressor for sizes 5 to 7 and hermetic scroll compressor for sizes 8.5 to 25; plate type evaporator: UNIT FRAME Self supporting frame with removable panels constructed from galvanized sheet steel with RAL 5014 powder paint baked at 180°C to provide a durable weatherproof finish. COMPRESSORS Single phase rotating type (models 5-7), internal thermal protection and crankcase heater, assembled on rubber vibration mounts (size 7 only). Hermetic scroll compressor (models 8.5 to 25), internal thermal protection and crankcase heater, assembled on rubber vibration mounts.The models with three phase power supply are equipped with a safety device (phase sequence relay) to prevent the rotation in inverse sense of the compressor. Condenser Composed of a high efficiency finned coil manufactured from mechanically expanded copper tubes and aluminium fins. The coil with special fins and crossgrooved tubes allows high ambient temperature operation. The finned coil is protected by a metal grille which is installed as standard. CONDENSER FANS Axial fans directly coupled to 6 pole motors with internal Klixon overload protection. Motor protection category is IP 54. The fan is equipped with a safety grille to UNI EN 294. ELETTROFANS Del type assiale, studiati per ottimizzare l’efficienza e ridurre l’emissione sonora, direttamente accoppiati a motore elettrico a 6 poli, con protezione termica (klixon interno). Il grado di protezione del motore è IP 54. Il ventilatore include la griglia di protezione antinfortunistica secondo UNI EN 294. EVAPORATOR Brazed plate type in 316 AISI stainless steel. Thermal insulation of evaporator is provided by closed cell expanded material. The evaporator is equipped with a low water temperature probe for freeze protection and is equipped as standard with a mechanical flow switch. The use of plate type heat exchangers provides: • An improved COP/EER; • A reduced refrigerant charge; • A reduced unit weight and dimension; • A reduction in maintenance. REFRIGERANT CIRCUIT Comprising: charge connection on liquid and suction line, liquid sight-glass, filter/dryer, thermostatic expansion valve with external pressure equalisation, high and low pressure switches and relief valve. ELECTRICAL PANEL The electrical panel includes: • Main switch; • Fuses to protect auxiliary and power circuit; • Compressor contactor; • Pump contactor/relay (ST version); • The microprocessor (Eliwell) controls the following functions on all units: - Water temperature regulation, with entering water temperature control; - Freeze protection; - Compressor time intervals; - Alarm signalling; - Alarm reset; - Common alarm contact for remote signalling; - Digital input for remote ON-OFF; • Potential free contacts for compressor operating status; • Contatto puliti di allarme generale • Display presentation of the following information: - Entering and leaving water temperature; - Condensing temperature; - Programmed temperature set-point and differential; - Alarm descriptions with code; - Compressor and pump hours run meter. Electrical power supply [V/f/Hz]: 230/1/50±5% for sizes 5 e 07, and 400/3+N~/50 ±5% or sizes from 8.5 to 25. CONTROLS AND SAFETY DEVICES • Chilled water temperature probe (at evaporator inlet); • Reeze protection probe at the outlet of each evaporator (with automatic reset managed by controller; after a preset number of trips the control stops the unit); • Safety high pressure switch (with automatic reset managed by controller; after a preset number of trips the control stops the unit); 4
• Low pressure switch (with automatic reset managed by controller; after a preset number of trips the control stops the unit); • Mechanical flow switch, supplied on all units as kit; • Condensing pressure control by fan speed regulator for low ambient temperature operation. TESTING The units are subjected to a dry run in the factory and supplied complete with oil and refrigerant. VERSIONS EPSILON/HP: REVERSE CYCLE HEAT PUMP In addition to the components of standard unit, includes: 4-way reversing valve, liquid receiver, non return valve, second thermostatic valve. Microprocessor enabled for summer/winter changeover and automatic defrosting, digital input for remote summer/winter changeover. EPSILON/LE: CONDENSING UNIT As regards to the standard unit, this model is not equipped with an evaporator and thermostatic valve. The unit is supplied without refrigerant fluid charge. The unit is in any case equipped with microprocessor controller managed by an external thermostat. EPSILON/LE/HP: HEAT PUMP CONDENSING UNIT In addition to the components of version Epsilon/LE, this unit includes: 4-way reversing valve, liquid receiver, non return valve, second thermostatic valve. The solenoid valve on the liquid line is supplied as standard. Suction and discharge valves on the suction and liquid line, a solenoid valve on the liquid line and a non return valve can be supplied as an option. The unit is supplied without refrigerant fluid charge. The unit is in any case equipped with microprocessor controller managed by an external thermostat for summer/ winter changeover from digital input and automatic defrost cycle with a temperature probe. HYDRAULIC MODULE OPTIONS EPSILON/ST 1PS: UNIT WITH STORAGE TANK AND PUMP In addition to the components of standard version, this unit includes: insulated storage tank, circulating pump with rgulating gate valve, expansion tank (standard only on HP version),bleed valve, unload valve for hydraulic circuit emptying, water side relief valve (the value is set at 3 bar,corresponding to the maximum permissible working pressure. ACCESSORIES REFRIGERANT CIRCUIT ACCESSORIES • High and low pressure gauges; • Liquid receiver (standard on versions HP); • Compressor suction and discharge valves; • Liquid line valve ; • Liquid line solenoid valve. HYDRAULIC CIRCUIT ACCESSORIES • Anti-freeze evaporator heater; • Anti-freeze kit (ST1 PS version) with anti-freeze evaporator heater, heater on the hydraulic circuit and pump,immerged heater in the storage tank; • Expansion tank (only version ST 1PS, standard for HP version); • Automatic filling device (only version ST 1PS). ELECTRICAL ACCESSORIES • Serial interface RS485; • Remote user terminal panel (in addition to the standard terminal); • Summer/winter changeover from digital input; • Remote on/off from digital input. VARIOUS ACCESSORIES • Rubber anti-vibration mounts; • Condenser Copper/Copper coil; • Condenser Copper/Copper tinned coils; • Pre-painted aluminium condenser coil; • Condensing coil with anticorrosion treatment with polyurethane based coating. The product provides durableresistance to corrosion in coastal environments, rural or industrial areas; • Condensate drain pan (only versions HP and HP/LE); • Metal grille to protect the finned coil; • Finish in “RAL” colour other than standard. 5
Page 1: TECHNICAL CATALOGUE EPSILON 4,3÷25
Page 6 and 7: TECHNICAL DATA STANDARD UNIT UNIT S
Page 8 and 9: COOLING CAPACITY STANDARD UNIT MODE
Page 10 and 11: COOLING CAPACITY EPSILON/LE MODEL 5
Page 12 and 13: OPERATING LIMITS Temperatura di usc
Page 14 and 15: SOUND LEVEL STANDARD UNIT MODEL Oct
Page 16 and 17: OVERALL DIMENSIONS MOD. 5-7-8.5 50
Page 18 and 19: OVERALL DIMENSIONS MOD. 10-12.5-15
Page 20 and 21: OVERALL DIMENSIONS MOD. 20-25 50 40
Page 23 and 24: INSTALLATIONS RECOMMENDATIONS LOCAT

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