NEXT DL.....CW.....14,1 ÷ 49,2 kW

MAIN FEATURES
Chilled water feeding precision air conditioner.
15 models available, 6 versions for a wide selection opportunity.
Chilled water feeding.
Two-way chilled water valves.
EC plug-fans.
4R, 6R, 8R versions, upflow (OVER) or downflow (UNDER) air delivery.
Suitable for indoor installation.

MAIN BENEFITS
Technical synergy with RC Group liquid chillers.
Availability of electric heater.
Availability of steam humidifier.
Availability of hot water heating coil.
Availability of extra circuit heating coil (only for 4R version).
Availability of units with separate fan section, PLUS.
Complete set of optional accessories: filters, plenum, panels, stand.
Easily of maintenance.

INDOOR INSTALLATION
The machines are designed for indoor installation.

WORKING LIMITS
Room air temperature:
14”C minimum temperature with wet bulb.
24”C maximum temperature with wet bulb. 35”C maximum temperature with dry bulb.

Room air humidity:
20%RH minimum relative humidity. 75%RH maximum relative humidity.

MAIN COMPONENTS
FRAMEWORK
Base in aluminium extrusion, painted with epoxy powders.
Frame in galvanized steel sheet.
Galvanized steel sheet panels painted with epoxy powders, internally insulated with noise absorption material and seals to ensure air tight with the panels.
Hinged front panels with quick release removal system.
Total front access for routine maintenance.
Removable lateral and back side panels.
Colour: RAL 9005 for base and frame (black) RAL7016 for panels (anthracite gray)
OVER version
Air intake from the front through honeycomb type grille and air delivery from the top.
Washable air pre-filters with G2 efficiency, with cells in synthetic fibre (size E0 excluded).
UNDER version Machine size E0:
Air intake from the front through honeycomb type grille and air delivery
from the bottom.
Machine size E1, E2, E3, E3P, E4, E5, E6, E7, E8, E9 and all PLUS series:
Air intake from the top and air delivery from the bottom.

FILTER SECTION
Size E0:
Washable air filters with G2 efficiency, with cells in synthetic fibre and metallic frame (EN 779-2002).
Size E1, E2, E3, E3P, E4, E5, E6, E7, E8, E9 and all PLUS series:
Washable air filters with G4 efficiency, with cells in synthetic fibre and
metallic frame (EN 779-2002).

COOLING SECTION
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 heat exchanger is available in 4R, 6R or 8R version. The choice must be made when ordering.
The heat exchangers in 6R or 8R version are not available for size E0 units.
2-way motorized valve for water flow regulation with 0÷10 VDC control actuator and emergency manual control. Nominal operating pressure up to 1600 kPa and closing pressure (Δps) of 1400 kPa.
Frame in galvanized steel.
Condensate tray in peraluman with PVC flexible discharge pipe.

FANS SECTION
NEXT EVO CW OVER / UNDER
The fan section is contained within the machine and includes:
The fan section is contained within the machine and includes Centrifugal fans with backward aerofoil curved blades, single suction and without scroll housings (Plug-fans), directly coupled to electric motor.
Brushless type synchronous EC electric motor with external rotor 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 through serial communication between electric motor interface and microprocessor control.
Temperature sensors on air intake and delivery.
Fan guard with rubber support (UNDER version)

NEXT EVO CW PLUS
The fan section is separated and is designed to be fixed under the machine. The fan section provides the air discharge from the front and can be installed in the raised floor void or directly on the floor for downflow air delivery.
It is possible to provide the air flow towards the rear of the machine by moving the panels and the fan guard.
The fans section includes:
Height adjusting rubber holders.
The fan section is contained within the machine and includes Centrifugal
fans with backward aerfoil curved blades, single suction and without scroll housings (Plug-fans), directly coupled to electric motor.
Brushless type synchronous EC electric motor with external rotor 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 through serial communication between electric motor interface and microprocessor control.
Temperature sensors on air intake and delivery.
Fan guard with rubber support on air intake and delivery

ELECTRICAL PANEL
In accordance with EN60204-1 norms complete with:
Main switch with door lock safety.
Magnetothermic switches for fans.
Contactors for each load. The supply fans equipped with EC electric motor and don’t require contactors.
Transformer for auxiliary circuit and microprocessor supply.
Terminals: OUTLETS
voltage free deviating contact for General Alarm 1
voltage free contact for supply fans status. INLETS
Emergency unit stop with signalling on display (external alarm).
External enabling.
Power supply 230/1/50 for size E0.
Power supply 400/3/50+N for other size.

CONTROL SYSTEM
Microprocessor system with graphic display for control and monitor of
operating and alarms status. The system includes:
Real time clock.
Predisposition for connectivity board housing ( RCcom MBUS/JBUS,
LON, BACnet for Ethernet (SNMP- TCP/IP), BACnet for MS/TP).
Main components hour-meter.
Nonvolatile “Flash” memory for data storage in case of power supply
faulty and for alarms status recording (2MB).
Menu with protection password.
LAN connection.