MINIS

Small-capacity chillers

MINIS units are high-efficiency, compact water chillers with exceptionally low noise emission. They are developed to meet the cooling requirements of smaller refrigeration systems and are intended for outdoor installation.

The MINIS unit consists of a single refrigeration circuit. It uses a hermetic scroll compressor with advanced performance and significantly lower noise during operation, designed and certified for use with flammable refrigerants. Thanks to the wide operating frequency range, scroll compressors provide a broad range of achievable cooling capacity.

A plate heat exchanger with advanced characteristics is used as the evaporator, ensuring maximum heat transfer efficiency while reducing the required refrigerant charge. The air condenser is of microchannel aluminum design. Axial fans equipped with EC motors allow variable speed control and variable condensing temperature operation.

Each MINIS unit is factory tested and delivered pre-charged with refrigerant and oil. Conformity assessment is carried out in accordance with the European Pressure Equipment Directive (PED) 2014/68/EU. The unit complies with all safety and environmental requirements.

Cooling capacity:

K1

L1

Number of refrigeration circuits*: 1

*Number of refrigeration circuits equals the number of compressors

Unit dimensions (K1 & L1):

• Length (without connections): 2135 mm
• Width: 905 mm
• Height: 1060 mm

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GENERAL

• Powder-coated galvanized steel housing, corrosion and weather resistant, standard color RAL 7035
• Removable housing panels
• Anti-vibration mounts
• Compressor compartment located in a separate protective enclosure within the housing
• Pipe insulation to prevent condensation
• Safety strategy selection – permanent compressor compartment ventilation or refrigerant leak detector combined with ATEX fan

ELECTRICAL

• Main power switch and phase monitoring relay
• Electrical protection for all components
• Microprocessor controller supervising full unit operation
• Electronic expansion valve for precise refrigerant flow control
• Communication protocols: Modbus TCP/IP, Modbus RTU or BACnet IP
• Remote unit access

HYDRAULIC CIRCUIT

• Stainless steel hydraulic piping
• Hydraulic connection via free stainless steel flange
• Air vent valve
• Safety valve
• Drain valve
• Flow switch
• Thermal insulation of piping

GENERAL

• Custom housing color
• Low-noise version with additional sound insulation

ELECTRICAL

• Cabinet lamp with socket
• Electrical cabinet heater (250 W)
• Remote monitoring (Siemens Cloud)

HYDRAULIC CIRCUIT

• Circulation pump
• Y-strainer filter
• Shut-off valves (butterfly valves)
• Expansion vessel
• Flow meter
• Self-regulating heaters (heating cables) for frost protection of water/glycol piping
• Hydraulic circuit upgrade using hydromodule