Air-water chillers and heat pumps with low-GWP refrigerant.
Maximum seasonal efficiency.
Reliability under all operating conditions, extremely high performance at partial load, flexibility and configurability to meet all system requirements and the use of state-of-the-art components are all aspects that Galletti considers essential in the manufacture of Advanced Design products.
This has led to the creation of VLS, a new range of air-water units with high seasonal efficiency using refrigerant R454B.
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- Refrigerant R454B (GWP = 467)
- High seasonal efficiency: SCOP up to 4.04 and SEER up to 4.69
- Up to 6 scroll compressors with an IDV valve for increased efficiency during partial load operation
- Modular V-shaped structure with small footprint and use of cutting-edge components to reduce the internal refrigerant charge
- Intelligent logics for managing defrost cycles (split for each circuit)
- Finned coil circuit designed to ensure reverse-flow exchange between air and refrigerant in every operating mode.
Features and Versions
- Microchannel coil for cooling-only versions
- High configurability of options and accessories
- Electronic expansion valve as standard features
- 2 cooling circuits
- Wide operating range: water from -10 °C to 55 °C
- Operation with outside air from -15 °C to 46 °C
- On-board hydronic kit with 2 pumps and 1 inertial buffer tank
- Extension of the operating range during the heating phase thanks to the "Low Air Temperature" option
- 13 models
- Cooling only
- Reversible heat pumps
- Standard and low-noise acoustic configurations
- With plate or shell-and-tube heat exchanger
- Also available with refrigerant gas R410A (VRS)
Technical characteristics
The constant search for the "best" that technology and expertise can offer – in terms of components, new refrigerants, engineering solutions, and services – represents the company's daily efforts to achieve its vision of a future where comfort is attained while respecting sustainability. This vision entails making the best use of available resources, designing and manufacturing increasingly efficient products, and minimizing the impact of these products and systems as a whole.
The VLS range consists of 13 models with cooling capacities ranging from 150 to 590 kW, available in cooling-only or reversible heat pump versions.
The range's main strength is its high seasonal efficiency, which is designed to permanently reduce annual energy consumption as well as meet the minimum efficiency requirements established by the ErP regulation. In order to increase the efficiency at partial loads, all VLS models are provided with tandem or trio solutions (2 or 3 compressors on a single circuit) and are equipped with an electronic expansion valve as standard.
The use of top quality components at the cutting edge of technology in the cooling, hydraulic, and electrical systems makes VLS chillers state of the art in terms of efficiency, reliability, and operating limits. In fact, the ability to produce water from -10°C to 55°C and operate at full load with outdoor air temperatures from -15°C to 46°C is guaranteed.
The range provides high configurability from an acoustic point of view, with a wide range of accessories designed to reduce noise emissions. Also, the option of selecting a shell-and-tube heat exchanger is guaranteed for all models above 200 kW.
The advanced controller, which is standard across the entire range, allows continuous monitoring of operating parameters, advanced adjustment logics and connectivity.
Main components
Related accessories
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