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NSI

NSI

Product catalog summary

Overview: The document provides detailed specifications and features of air-cooled chillers equipped with inverter screw compressors and axial fans, offering cooling capacities ranging from 262 to 1249 kW. These chillers are available in 14 different sizes and are designed for cooling only, using refrigerant R134a.

Key Features:

Continuous capacity control from 15% to 100% with automatic compression ratio control and opto-electronic oil level monitoring.
High efficiency version 'A' operates up to 46°C external air temperature, includes low noise operation features, and electronic expansion valves.
Options for pump assembly configurations and multilingual microprocessor controllers.
Compact dimensions with anti-corrosion metal control panels.

Accessories:

RS-485 interface for supervision systems with MODBUS protocol.
Spring anti-vibration mounts and low ambient devices for operation down to -10°C.
Remote control options via AERWEB300 for monitoring and controlling up to 18 units.
Protective grilles and evaporator trace heating available as factory-fitted options.

Technical Data:

Cooling capacities range from 262 kW to 1249 kW with corresponding input power and water flow rates.
Energy Efficiency Ratios (EER) and Seasonal Energy Efficiency Ratios (ESEER) provided for each model.
Sound power levels and maximum external air temperatures are specified for each model.
Dimensions and weights are detailed for each model size.

Configuration Options:

Various configurations available for expansion devices, heat recovery, condenser coil materials, fan types, and power supply options.
Pump assembly options include configurations with standby pumps and multiple expansion tanks.

Compliance and Certification: The chillers comply with UNI EN 14511:2011 standards for cooling mode and sound power measurements are in accordance with UNI EN ISO 9614-2.

Manufacturer Information: Aermec S.p.A., based in Italy, reserves the right to modify products for improvement purposes.

Catalog excerpts

Air cooled chillers INVERTER screw compressors, axial fans Cooling capacity from 262 to 1249 kW Aermec participate in the EUROVENT program:LCP/A/P/C, up to 600 kW the products are present on the site www.eurovent-certification.com * Not certified model New generation INVERTER screw compressor Features • Available in 14 sizes • Cooling only version • Refrigerant R134a • New generation INVERTER screw compressor: - Continuous capacity control from 15 to 100% - With automatic control of compression ratio - With opto-electronic control of oil level • AC Inverter: - Refrigerant cooled - With control of operating field - With integrated data logger High efficiency version “A” • Operating limit up to 46 °C external air temperature • Compressor acoustical enclosure for low noise operation • Electronic expansion valve • Dry expansion shell and tube evaporator optimised for refrigerant R134a • Extremely low noise axial fans with options: - M high static pressure fans - J inverter fans • P u m p a s s e m b l y o p t i o n ( s e e U n i t Configurator) that includes: - 1 pump - 1 pump plus 1 standby - 2 expansion tanks of 25 litres • Microprocessor controller • Multilingual display • Compact dimensions • Metal control panel with anti-corrosion polyester paint. • AERWEB300: Accessory AERWEB allows remote control of a chiller through a common PC and an ethernet connection over a common browser; 4 versions available: AERWEB300-6: Web server to monitor and remote control max. 6 units in RS485 network; AERWEB300-18: Web server to monitor and remote control max. 18 units in RS485 network; AERWEB300-6G: Web server to monitor and remote control max. 6 units in RS485 network with integrated GPRS modem; AERWEB300-18G: Web server to monitor and remote control max. 18 units in RS485 network with integrated GPRS modem; • MULTICHILLER: Control system for multiple parallel installed constant flow chillers providing individual chiller on/off and control capability. Accessories • AER485P1: RS-485 interface for supervision systems with MODBUS protocol. • AVX: Spring anti-vibration mounts. For compatibility of the AVX mounts refer to the technical manual. • DCPX: Low ambient device for cooling operation below 19 °C down to -10 °C. • KRS: Evaporator trace heating. Factory fitted only. • GP: Protective grille. Condenser coil external protection against accidental or hail damage. Factory fitted. • PRV3: Remote control of the chiller operating functions.

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Accessory compatibility 1. Accessory only factory fitted 2. Accessory available for all sizes, to fit contact factory Unit Configurator By suitably combining the numerous options available it is possible to configure each model in such a way as to meet the most demanding of system Configuration fields: Code Expansion Heat recovery device Condenser coil Power supply Size Model Version Fan Pump Expansion device: X - R1 34a electronic expansion valve, minimum leaving water (for lower temperatures contact the factory) Heat recovery: D - Without heat recovery Condenser coil: V - Anti-corrosion coated...

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Technical Data Mod. NSI Cooling capacity Total input power Water flow rate Pressure drop EER ESEER Power supply Total input current Maximum current (FLA) Starting current (LRA) Capacity control Refrigerant Refrigerant circuits Air flow rate Fans Evaporator Sound power Maximum external air temp. Mod. NSI Cooling capacity Total input power Water flow rate Pressure drop EER ESEER Power supply Total input current Maximum current (FLA) Starting current (LRA) Capacity control Refrigerant Refrigerant circuits Air flow rate kW kW l/h kPa W/W W/W V/ph/Hz A A A % type n° type n° m3/h type n° type n° dB(A)...

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Aermec reserves the right to make all modification deemed AermecS.p.A. necessary for improving the product at any time with any Via Roma, 996 - 37040 Bevilacqua (VR) - Italy modification of technical data. Tel. 0442633111 -Telefax 044293730

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