Air cooled chiller Carrier 135 kW
- Brand: Carrier
- Power: 135 kW
- Year: 2007
| Power | 135 kW |
| Year of manufacture | 2007 |
| Type of refrigerant | R407C |
| Refrigerant circuit | 2 pcs. |
| Compressors | 4 pcs. Danfoss (scroll) |
| Number of fans | 2 pcs. |
| Dimensions | 2, 28 x 2,1 x 1,33 m. |
| Weight | 1174 kg. |
| Working hours | 150 h. |
| Condition | excellent |
The new generation of Aquasnap liquid chillers features the latest technological innovations: Scroll compressors, low-noise fans made of composite material, auto-adaptive microprocessor control, full optimization for the ecological refrigerant HFC-407C. An auto-adaptive control algorithm ensures intelligent control of compressor operation in most comfort air conditioning applications, making a buffer tank unnecessary.
Features
Aquasnap is equipped with the revolutionary second-generation Flying Bird fan. This low-noise, the two-speed fan is made of composite recyclable material and employs a
multi-blade design and a rotating shroud, as used in the aeronautical industry. It is exceptionally quiet and does not generate the low-frequency noise, irritating to the human ear. At part load or low outdoor temperatures, the fan automatically switches to the low speed. As an option, you can program fan operation at low speed, for example during the night, for quieter operation. To reduce the operating noise even further, the fan is not fixed to the top unit panel but supported by an extremely rigid tower chassis. This innovative structure prevents the transmission of vibrations to the unit casing and results in a more aesthetic flat top panel.
The scroll compressors run extremely quietly and vibration-free. They are well-known for their durability and reliability. The motor is fully cooled by suction gas and permits up to 12 starts per hour. A safety valve allows reverse rotation due to incorrect wiring, without impairing compressor operation. In addition, these compressors need no maintenance.
The use of two compressors per circuit permits a reduction of the start-up current and of the power input at part load.
The ecological refrigerant HFC-407C has no effect on the ozone layer and is the replacement for R-22 in air conditioning applications with small and medium capacities. It has been extensively tested by Carrier for several years and offers the same reliability and even slightly superior performances to those of R-22.
The evaporator is a welded, stainless steel plate heat exchanger, maximizing the thermodynamic properties of HFC-407C and offering considerably increased performances as well as low water-side pressure drops.
From size 30RA 090 upwards the units are equipped with a twin-circuit interlaced heat exchanger for safe operation at part load. When the unit is shut down, the heat exchanger is protected against freeze-up by a trace heater.
The refrigerant circuit of the chiller is designed to be completely leakproof – for life. All pipes and the refrigeration components are welded, the capillaries, a source of leaks in the past, have been replaced. Pressure sensors, mounted directly on the pipes, take the place of the pressure switches. From size 30RA 090 upwards, two independent refrigerant circuits ensure partial cooling capacity in all circumstances.
The Aquasnap is designed for year-round operation and operates without the use of accessories down to -10°C outdoor temperature. A control algorithm intelligently manages the operation of the fans.
Electrical connections are simplified, and the standard Aquasnap equipment includes a main switch and a single entry point of the three-phase without a neutral power supply to the whole unit.
Large removable panels and the hinged door of the control box ensure perfect accessibility and permit easy access to all components. Furthermore, an opening allows adjustments to be made without interrupting the operation of the chiller. For the most important maintenance operations, the unit top cover is easily removed (with the fan remaining in place), and total access from above is possible.
