AIR-COOLED SCROLL CHILLERS WITH GREENSPEED INTELLIGENCE 30RBM/30RBP 160-520
Features and advantages
Very economical operation
High unit full and part load energy efﬁciency and efﬁcient design of the water side: - Eurovent energy efﬁciency class A or B - Standardised Eurovent values in accordance with EN 14511-3:2013 EER up to 3.1 and ESEER up to 4.35 (30RBP version) - Multiple scroll compressors equipped with a highefﬁciency motor that permit exact matching of the cooling capacity to the load - Electronic expansion device permitting operation at a lower condensing pressure and improved utilisation of the evaporator heat exchange surface (superheat control) - Condenser with high-efﬁciency Novation® aluminum micro channel heat exchangers and Greenspeed® variable speed fans (30RBP version) - Low pressure drop brazed plate heat exchangers (pressure drops < 45 kPa at Eurovent conditions). Speciﬁc control functions to reduce unit cooling energy use during occupied and unoccupied periods: - Internal time schedules clock: Permits chiller on/off control and operation at a second set point - Automatic water set-point offset based on outside air temperature or room air temperature via an option - Floating high-pressure management - Variable-speed fan control - Cooling demand limitation. Greenspeed® variable-speed pump to reduce pumping energy use up to 2/3 (option recommended by Carrier): - Elimination of the energy losses caused by the water ﬂow control valve by the electronic setting of the nominal water ﬂow - Energy savings during stand-by periods or part-load operation by automatic water pump speed reduction. Pump motor energy use varies as the cube of the speed so that only 40% speed reduction can reduce energy consumption by 80% - Improved unit part-load performance (SEER increased SEER value with variable water ﬂow following EN14825). Refer to hydronic option chapter for more information. Extra energy savings through multiple options: - Glycol free direct-expansion free cooling (Carrier patent) on one or two refrigerant circuits or hydronic free cooling (available in 2015) - Partial or total heat reclaim. Reduced maintenance costs - Fast diagnosis of possible incidents and their history via the control - R-410A refrigerant is easier to use than other refrigerant blends.
Low sound level
Condenser section with ﬁxed speed fans (30RBM models): - Optional low-speed fans (700 rpm) and compressor enclosure to reduce full load noise level by 6 to 7dB(A) - Condenser coils in V-shape with an open angle, allowing quieter air ﬂow across the coil - Low-noise 4th generation Flying Bird fans, made of a composite material (Carrier patent) - Rigid fan installation for reduced noise (Carrier patent). Condenser section with Greenspeed® variable-speed fans (30RBP models recommended by Carrier for even quieter operation): - Optional factory setting of the fan in low speed together with compressors enclosure to reduce full load noise level by 6 to 7 dB(A) - Exceptional acoustic signature during part-load operation through smooth fan speed variation. Speciﬁc control functions or features to reduce noise level during night or unoccupied periods: - Night time sound control with cooling capacity and fan speed limitation - Low-noise scroll compressors with low vibration level - The compressor assembly is installed on an independent chassis and supported by ﬂexible antivibration mountings. - Dynamic suction and discharge piping support, minimising vibration transmission (Carrier patent) - Acoustic compressor enclosure, reducing radiated noise emissions (option).
Fast and easy installation
Compact design - The AquaSnap units are designed to offer compact dimensions for easy installation. - With a length of approximately 4.8 m for 520 kW and a width of 2.25 m the units require minimum ﬂoor space.