MULTIPLO PF...... 21,8 ÷ 222,0 kW

MAIN FEATURES
Multifunction chiller
17 models available, for a wide selection opportunity..
Average step of 12kW.
EER up to 3,12.
COP up to 3,84.
ESEER up to 4,01.
Scroll compressors.
Single gas circuit.
R410A Refrigerant charge.
Plate type heat exchangers.
EC-type plug fan.
Single air circuit.
Electronic expansion valve.
Suitable for indoor installation.

IDEA® DEFROSTING SYSTEM
“Patented” defrosting system with dynamic reading of working parameters. Thanks to proprietary software it senses the real presence of brine on the coil starting defrosting cycles only in that situation. This brings a remarkable energy saving (more than 20- 30% on the average) and a higher working continuity compared with
traditional systems.

WORKING LIMITS IN COOLING MODE
Evaporator chilled water outlet temperature: -12÷20°C Ambient temperature: -10÷45°C

WORKING LIMITS IN HEATING MODE
Condenser hot water outlet temperature: 30÷60°C Ambient temperature: -10÷35°C

MAIN BENEFITS
Defrosting dynamics control system IDEA®.
Availability of pumping groups.
Availability of kit for the reduction of the noise.
Easily of maintenance.

INDOOR INSTALLATION
The machines are designed for indoor installation.

ELECTRONIC EXPANSION VALVE
The electronic expansion valves are synonymous of an higher energy efficiency and stability of the system.

MAIN COMPONENTS
FRAMEWORK
Base, self supporting frame and paneling in steel plate with protective surfaces treatment in compliance with UNI ISO 9227/ASTMB117 and ISO 7253, and painted with epoxy powders.
Colour: RAL 9002

COMPRESSORS
Orbiting spiral (SCROLL) hermetic compressors with spiral profile optimized for R410A refrigerant.
ON / OFF capacity control (0 / 100% each compressor).
2-pole 3-phase electric motor with direct on line starting.
Phase sequence electronic relay.
Crankcase heater.
Electric motor thermal protection via internal winding temperature sensors.
Terminal box with IP54 enclosure class.
Rubber supports.

PLANT SIDE HEAT EXCHANGER
Copper brazed plate type with cover plates, plates and connections in AISI 316 stainless steel:
Anticondensate insulation made of polyurethane.
Temperature sensors on water inlet and outlet.
Differential water pressure switch for water flow control.
Antifreeze heater.

AIR/GAS HEAT EXCHANGER
Heat exchanger coil with internally corrugated copper tubes and high efficiency aluminium fins, specifically developed to provide high heat transfer and lower pressure drops. The combination of two factors, special tubes and fins, allow to optimally combine the following aspects:
Maximum capacity relative to the size of the exchanger.
Minimum charge of refrigerant.
Reduction of the air flow required for the heat exchange.
Particular circulation on refrigerant side, in order to optimize performance in heat pump mode.
Ambient temperature sensor
Frame in galvanized steel.

FANS SECTION
Centrifugal fans with backward curved blades, single suction and without scroll housings (Plug-fan).
Brushless type synchronous EC motor with integrated electronic commutated system and continuous variation of the rotation speed. The motor rotation control is obtained with the EC system (Electronic
Commutation) that manage the motor according to the 0÷10V proportional signal coming from the microprocessor control.
Maintenance-free bearings
IP54 enclosure class.

REFRIGERANT CIRCUIT
Components for the single refrigerant circuit:
Reversing valve for refrigeration cycle inversion.
Electronic expansion valves: o For P1 units:
One electronic expansion valve. o For P2 units:
One valve on plant side heat exchanger.
One valve on source side heat exchanger (finned coil).
The valve allows high performance and system efficiency thanks to a timely and accurate response to changes in temperature and pressure. The electronic expansion valve exclude the installation of the electromagnetic valve on liquid line.
Thermostatic expansion valve for defrosting check on air/gas heat exchanger.
Sight glass.
Liquid receiver with service valve and safety valve.
Filter dryer on liquid line.
Solenoid valves on liquid lines.
Service valves on liquid line and 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.
High pressure safety switch with manual reset.
Oil drainage and oil recovery systems.
Check valves.
IDEA® defrosting system.
RC Group patented defrosting system based on a dynamic reading of the evaporating parameters. Through sensors the microprocessor realize the real ice presence on the gas/air heat exchanger and activates the defrosting cycle only when necessary, with consequent energy saving.
Refrigerant circuit with copper tubing with anticondensate insulation of the suction line.
Plastic capillary hoses for pressure sensors connection.
R410A refrigerant charge.

ELECTRICAL PANEL
In accordance with EN60204-1 norms, suitable for outdoor installation, complete with:
Main switch with door lock safety.
Magnetothermic switch or fuses for each compressor.
Magnetothermic switches for fans or water pumps (if scheduled).
Contactors for each load.
Transformer for auxiliary circuit and microprocessor supply.
Panel with machine controls.
Power supply: 400/3/50+N.

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.
Clock card for alarms date and time displaying and storing.
Nonvolatile “Flash” memory for data storage.
Menu with protection password.
LAN connection.

HYDRAULIC CONNECTIONS OF HEAT EXCHANGERS
The heat exchangers’ threaded hydraulic connections are available up to a diameter of 2” included, and correspond to ISO 228/1 – G M.
The pipes’ threaded hydraulic connections are available up to a diameter of 2” included, and correspond to ISO 7/1 – R.
The hydraulic connections with flange (FL) are supplied as standard with counter flange.
The hydraulic connections with grooved end are supplied as standard with flexible joint and adapter pipe.