Air Cooled Screw Chillers

Air Cooled Screw Chillers

Nehmeh Air cooled NRC Series Screw Chillers designed for Energy Savings and GCC Climate • Designed to conform to –…

Nehmeh Air cooled NRC Series Screw Chillers designed for Energy Savings and GCC Climate

• Designed to conform to
– ARI standard 550/590 (Water chilling packages using the vapor compression cycle.)
– ANSI / ASHRAE 15-1994 (Safety code for Mechanical Refrigeration)
• Screw compressors
• Microprocessor controller.
• Coolers
• Electronic Expansion valve
• Single point power connection.

Compressor:
– All compressors are compact semi-hermetic screw.
– Automatic start unloading.
– Step less capacity control and best part load efficiency.
– Modulate capacity between 25% to 100%.
– Step capacity control Additionally Hot Gas BY pass control

Features:
– Under Voltage Phase Protection
– Electrical Panel NEMA 4 (IP55)
– Crankcase Heater
– Unit On/Off Switch
– Condenser Fan Motor Circuit Breaker
– Compressor Circuit Breaker
– ASME CODE STAMPED
– PRESSURE GAUGES
– CONDENSER COIL GUARD
– COMPRESSOR/COOLER GUARD
– COMPRESSOR ENCLOSURE BOX (SOUNDATTENUATOR)
– FLANGED TYPE COOLER CONNECTION
– COPPER FINS/TUBES CONDENSER COILS
– PRE-COATED ALUMINUM FINS CONDENSER COILSCOATED COPPER/ALUMINUM FINS CONDENSER COILS
– NON-FUSED MAIN DISCONNECT SWITCHES
– COOLER HEATER TAPE
– GROUND CURRENT PROTECTION
– EXTERNAL OVER LOAD RELAY
– BUILDING MANAGEMENT SYSTEM (BMS)
– REMOTE MONITORING / SMS CONTROLLER COMMUNICATIONS
– POWER LINE ANALYZER

Remote Monitoring System and SMS Notification:
– Remote control through serial line – chiller sequencing (option)
– MODBUS protocol option
– LON protocol option
– BACnet protocol option
– SMS notification
– External enable/disable option
– Maximum demand control in emergency mode

Condenser Fan & Motor
– Class- “F” insulation Glass,
– Internally thermal Protection,
– high ambient application.70 Deg C
– Aerodynamic design, top discharge with protective grille
– Made in Europe (Germany/Spain)

Refrigeration:
– Independent refrigeration circuit per compressor
– Electronics Expansion valve
– Liquid line solenoid valve & shut off valve
– Liquid line moisture indicator
– Replaceable core filter drier
– Fully charged units with R134a refrigerant
– Liquid injection kit
– Adjustable High pressure switches
– Liquid injection control,
– Free terminal for remote on/off connection,
– Free terminal for general alarm output