Cooling capacity
25/110 kW
While the industry prepares for the new F-GAS regulations coming into effect on January 1st, 2027, we have chosen to get ahead. The CS-BZ of air- or water-cooled chillers was developed with a clear vision: to offer today a solution that is safe, efficient, and sustainable. The R513A refrigerant, classified A1 (non-toxic and non-flammable), ensures maximum safety, making it suitable even for use within production areas.
The series includes eight models across four different frames, with a rich and comprehensive standard configuration, offering the versatility to adapt to a wide range of applications.
It’s not just about meeting the regulations of tomorrow—it’s about building a more responsible future, starting today.
The frame is made of galvanized sheet metal coated with polyester powder (RAL 9002), providing High resistance to weathering and a refined appearance, ideal also for outdoor installations. Fastening systems are made of passivated carbon steel, fully resistant to corrosion.
All models are equipped with Scroll on/off compressors in a tandem twin-compressor, single-circuit configuration to maximize efficiency and reliability. The compressor room is designed to facilitate safe and easy maintenance. HGBP (Hot-Gas-By-Pass) is available as an option for enhanced water temperature control.
The chillers use R513A , with a GWP of 631, classified A1 (non-toxic, non-flammable). This is a blend of R1234YF (56%) and R134a (44%) , selected to ensure high performance while reducing environmental impact.
All models feature axial fans, designed to optimize airflow and guarantee high thermal efficiency. Condensation control is achieved via phase-cut modulation, providing precise adjustments according to thermal load and reducing energy consumption. EC fans with electronic speed control are available as an option.
The series is designed for flexible adaptation to various applications. Available hydraulic configurations are:
• STD: pump and tank included, water filling either manual or automatic
• WT: onboard pump, no tank
• WTP: without pump, without tank
Five different pumps are available, configurable in standalone or run/stand-by mode. All pumps feature silicon carbide seals, compatible with up to 35% ethylene or propylene glycol with corrosion inhibitors. The hydronic circuit integrates shut-off and non-return valves, tank level control (for open-tank versions), air vent, vacuum breaker, and safety valve.
Long Life Alloy microchannel condensers provide a large heat exchange surface without copper/aluminum interfaces and optimized airflow. Anti-corrosion treatments (E-coating or pre-painted fins) are available depending on ambient conditions at installation site.
The brazed-plate evaporator is designed to deliver high performance even at low water flow rates. Externally insulated with closed-cell material, it minimizes thermal losses and optimizes overall system efficiency.
The electronic control system fully manages all unit functions and is available in two versions: advanced control (standard) or 7” touch panel (optional), both compatible with RS485 interface and Carel or ModBus protocols.
Main features include:
• Control of delivery water temperature with dynamic set-point adjustment based on outdoor temperature.
• LAN network management for parallel control of up to 6 units.
• Pump activation in case of antifreeze alarm.
• Set-point correction via 4-20 mA signal.
• Integrated outdoor air temperature sensor for automatic set-point compensation.
• Management of dedicated circuit breakers for compressors, for compressors (per circuit), fans (per circuit), and pumps (single or dual).
• Mechanical seal for water-glycol mixture (STD/WT versions)
• Automatic water filling (STD version)
• By-pass (STD version)
• Y-strainer on water inlet
• Y-strainer on water filling (STD version)
• Air filters
• Air temperature sensor
• High/low pressure transducer on the cooling circuit
• Alarm relay
• Electronic expansion valve
• Fan speed control
• Magnetic thermal protection on electrical components
• Compressor heater
• Remote ON/OFF control
• Water temperature sensor IN/OUT
• Adjustable rubber dampers
• Packing on pallet with stretch wrap