FRIGO SCREW WP...... R134a .....394 ÷ 1505 kW

FRIGO SCREW WP...... R134a .....394 - 1505 kW

Main features

Packaged heat pump water/water liquid chiller for chilled water production in summer time and hot water production in winter time (inversion on hydraulic circuit at Customer care).

The machines are made for indoor installation.

Framework with sections of thick steel for high resistance to the greatest stress during handling and transport.

Machines supply fully assembled with refrigerant charge and control systems. The installation requires only electrical and hydraulic connections allowing costs and time savings.

Final assembly on all machines before shipment including running test, reading and monitoring of operating parameters, alarms simulation and visual check.

SERIES IDENTIFICATION

FRIGO SCREW WP – Packaged heat pump water/water liquid chiller equipped with equipped with screw compressors, shall and tube evaporator and condenser.

R134a refrigerant charge.

Cooling capacity 394 - 1505 kW

Heating Capacity 477 - 1976 kW

Design, assembly and test as per the Company Quality Assurance program in full compliance with ISO 9001.

RC Group has been the first Italian company in its segment to get the ISO 9001 in October 13th, 1991 with certificate ICIM 0018.

The machines are in full compliance with European Norms 2006/42CE, 2006/95CE, 2004/108CE, 97/23CE and subsequent amendments.

Main components

FRAMEWORK

• Base and self supporting frame in steel plate with protective surfaces treatment in compliance with UNI ISO 9227/ASTMB117 and ISO 7253, and painted with epoxy powders.
• Colour: RAL 9005

COMPRESSORS

• Twin screw semi-hermetic compressors with highly efficient screw profile and high peripheral speed, optimized for R134a refrigerant.
• Integrated discharge check valve.
• Flanged-on oil separator.
• Integrated overpressure valve.
• Replaceable cartridge type oil filter.
• Oil flow switch.
• Valves for oil filling and discharge.
• Sight glass
• Electronic protection device that includes:
• Electric motor thermal protection via internal winding temperature sensors.
• Phase sequence electronic relay
• Sensor on refrigerant discharge for temperature monitoring,
• 2-pole 3-phase electric motor with Part-Winding starting for models 410 V2 / 460 V2 / 510 V2 / 540 V2 / 610 V2
• 2-pole 3-phase electric motor with Star / Delta starting for all other machines.
• Stepless capacity control, 50-100% for each compressor.
• Crankcase heater.
• Terminal box with IP54 enclosure class.
• Rubber supports.

EVAPORATOR

• Shell and tube evaporator optimized for R134a refrigerant.
• Tubes with a helical rifled internal surface.
• Intermediate baffles positioned to ensure optimum speed of the fluid and low pressure drops.
• Single circuit on water side and independent circuits, one for each compressor, on refrigerant side.
• Shell, header, tube sheets, made of carbon steel, tubes in Cu.
• Anticondensate insulation made of polyurethane.
• Temperature sensors on water inlet and outlet.
• Threaded hydraulic connections or with grooved end arranged for flexible joint (the flexible joint and the adapter pipe are optional accessories).

CONDENSER

One condenser for each refrigerant circuit:

• Shell and tube condenser optimized for R134a refrigerant.
• Shell, header, tube sheets made of carbon steel, tubes in Cu.
• Insulation made of polyurethane.
• Temperature sensor on water outlet.
• Threaded hydraulic connections or with grooved end arranged for flexible joint (the flexible joint and the adapter pipe are optional accessories).

REFRIGERANT CIRCUIT

Components for each refrigerant circuit:

• Electronic expansion valve that allows high performance and system efficiency thanks to a timely and accurate response to changes in temperature and pressure.
• Sight glass.
• Filter dryer on liquid line.
• Service valves on liquid line.
• Service valves on gas discharge.
• Safety valve on low pressure side.
• Safety valve on high pressure side.
• Pressure transducers with indication, control and protection functions, on low and high refrigerant pressure and oil pressure.
• High pressure safety switch with manual reset.
• Refrigerant circuit with copper tubing with anticondensate insulation of the suction line.
• Plastic capillary hoses for pressure sensors connection.
• R134a refrigerant charge.

ELECTRICALPANEL

In accordance with EN60204-1 norms, suitable for indoor installation, complete with:

• Main switch with door lock safety.
• Fuses for each compressors.
• Contactors for each compressors (2 contactors for Part-Winding start system – 3 contactors for Star / Delta start system).
• Compressor Part-Winding start system for model 410 V2 / 460 V2 / 510 V2 / 540 V2 / 610 V2
• Compressor Star / Delta start system for all other machines.
• Transformer for auxiliary circuit and microprocessor supply.
• Panel with machine controls.
• Summer / Winter working mode selector.
• Power supply: 400/3/50.

CONTROL SYSTEM

• MP.COM microprocessor system with graphic display for control and monitor of operating and alarms status.

The system includes:

• Voltage free contact for remote general alarm.
• Main components hour-meter.
• Integrated "Data logger" function for the recording of events and alarms.
• Non-volatile "Flash" memory for data storage.
• Menu with protection password.
• Driver for the additional module.
• Additional module "1" for condenser water outlet temperature sensor.

HYDRAULIC CONNECTIONS OF HEAT EXCHANGERS

• Heat exchangers threaded hydraulic connections ISO 228/1 – G M, available up to a diameter of 3" included.
• Pipes threaded hydraulic connections ISO 7/1 – R, available up to a diameter of 3" included.
• The hydraulic connections with flange (FL) are not supplied with counter flange.
• The hydraulic connections with grooved end are not supplied with flexible joint (optional accessory).

OPTIONAL ACCESSORIES

The descriptions of these optional accessories can be found in Chapter ACCESSORIES

• "Brine A" kit for chilled water production up to –6°C,
• "Brine B" kit for chilled water production lower than –6°C.

WARNING

With BRINE Kit it is mandatory to use antifreeze mixture. Refer to the paragraph ANTIFREEZE SOLUTION.

The use of antifreeze mixtures causes a reduction of the machine performance.

Please refer to the RC WORLD electronic catalogue to obtain the effective performance.

• Partial heat recovery system.

Дополнительные материалы

Photo 1 FRIGO SCREW
Photo 2 FRIGO SCREW
Technical Catalogue FRIGO SCREW WP