AIR-COOLED LIQUID CHILLERS 30RBS 039-160
Features and advantages
Compressors - Low-noise scroll compressors with low vibration level - The compressor assembly is installed on an independent chassis and supported by anti-vibration mountings - Dynamic suction and discharge piping support, minimising vibration transmission (Carrier patent). Condenser (30RB)/air section - Vertical condenser coils - Protection grilles on anti-vibration mountings to protect the heat exchanger against possible shocks (optional on 30RB 039-160). - Low-noise latest-generation Flying Bird IV fans, made of a composite material (Carrier patent) are now even quieter and do not generate intrusive low-frequency noise - Rigid fan installation for reduced start-up noise (Carrier patent). Physical features - The unit has a small footprint and a low height (1330 mm) allowing it to blend in with any architectural styles. - The unit is enclosed by easily removable panels, covering all components (except air heat exchangers and fans). Simpliﬁed electrical connections - A single power supply point without neutral - Main disconnect switch (option 70) with high trip capacity - Transformer for safe 24 V control circuit supply included Fast commissioning - Systematic factory operation test before shipment - Quick-test function for step-by-step veriﬁcation of the instruments, electrical components and motors.
Optional variable-speed pump for economical operation - The control algorithm adjusts the water ﬂow rate based on the actual system requirements and obsoletes the need for the control valve at the unit outlet. Increased energy efﬁciency at part load - Eurovent energy efﬁciency class (in accordance with EN14511-3:2013) C and D in cooling mode and B and C in heating mode. - The refrigerant circuit includes several compressors connected in parallel. At part load, around 99% of the operating time, only the compressors that are absolutely necessary operate. At these conditions the compressors operating are more energy efﬁcient, as they use the total condenser and evaporator capacity. - The electronic expansion device (EXV) allows operation at a lower condensing pressure (EER, COP and ESEER optimisation). - Dynamic superheat management for better utilisation of the water heat exchanger surface. Reduced maintenance costs - Maintenance-free scroll compressors - Fast diagnosis of possible incidents and their history via the Touch Pilot Junior control - R410A refrigerant is easier to use than other refrigerant blends.
Easy and fast installation
Integrated hydronic module (option) - Centrifugal low or high-pressure water pump (as required), based on the pressure loss of the hydronic installation
Single or dual water pump (as required) with operating time balancing and automatic changeover to the back-up pump if a fault develops Water ﬁlter protects the pump against circulating debris Pressure measurement, using two pressure transducers and allowing indication of water ﬂow rate, water pressure and lack of water. High-capacity membrane expansion tank ensures pressurisation of the water circuit Overpressure valve, set to 4 bar Speed variator on the pumps (option) to ensure the correct ﬂow rate, based on the system requirements Thermal insulation and frost protection down to -20°C, using an electric resistance heater (see table of options)
Non-ozone depleting R410A refrigerant - Chlorine-free refrigerant of the HFC group with zero ozone depletion potential - Very efﬁcient - gives an increased energy efﬁciency ratio (EER, COP and ESEER) - 50% reduction in the refrigerant charge through the use of micro-channel heat exchangers for the cooling only units (30RBS) Leak-tight refrigerant circuit - Brazed refrigerant connections for increased leaktightness - Reduction of leaks due to reduced vibration levels and elimination of capillary tubes (TXVs) - Veriﬁcation of pressure transducers and temperat