WONE

Medium-capacity water chiller / heat pump

The WONE series consists of high-efficiency, water-cooled water chillers / heat pumps in a compact design. They are developed to cover cooling and/or heating demands of medium-capacity systems. The units are intended for indoor installation. Outdoor installation is possible with certain adaptations and consultation with the manufacturer.

The compressor is a semi-hermetic reciprocating type, controlled by a high-efficiency frequency inverter that enables soft start and continuous compressor speed variation for precise regulation of cooling / heating capacity. The evaporator and condenser are plate heat exchangers with advanced heat-transfer characteristics (SWEP AsyMatrix technology), ensuring maximum heat transfer efficiency and resulting in a significant reduction of required refrigerant charge.

WONE units can be designed for high-temperature heating. High-temperature heat pumps use the natural refrigerant R600a to heat water up to 90 °C. Consultation with the manufacturer is required.

Each WONE unit is factory tested and charged with refrigerant and oil. Supervision and conformity assessment of the device (assembly) are carried out in accordance with the European Pressure Equipment Directive (PED) 2014/68/EU. The unit meets safety and environmental requirements.

Number of refrigeration circuits*: 1

*Number of refrigeration circuits equals the number of compressors

Unit dimensions:

• Length: 2050 - 2250 mm
• Width: 950 - 1100 mm
• Height: 1300 - 2000 mm

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GENERAL

• Cabinet made of powder-coated galvanized sheet metal, providing corrosion and weather resistance; standard color RAL 7035
• Removable cabinet panels
• Anti-vibration mounts
• Compressor compartment located in a separate protective housing within the housing
• Piping insulation to prevent condensation
• Choice of safety strategy — permanent ventilation of the compressor compartment or a refrigerant leak detector combined with an ATEX fan

ELECTRICAL

• Electrical cabinet equipped with a main switch for the entire unit and a phase monitoring relay
• Electrical protections for all components
• Advanced microprocessor controller supervises the complete unit operation
• Touchscreen display for monitoring and controlling unit operation
• Electronic expansion valve enables precise refrigerant flow control
• Available communication protocols: Modbus TCP/IP, Modbus RTU or BACnet IP
• Dry contacts for alarms
• Remote access to the unit

HYDRAULIC CIRCUIT

• Hydraulic circuit piping made of stainless steel
• Hydraulic connection provided via a free stainless steel flange
• Air vent valve
• Safety valve
• Drain valve (for system draining and filling)
• Flow switch
• Thermal insulation of piping

GENERAL

• Selection of a different unit color (powder coating)
• Version with additional sound insulation (low-noise)
• Heat recovery option via a separate plate heat exchanger (desuperheater)
• Safety valves

ELECTRICAL

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

HYDRAULIC CIRCUIT

• Installation of shut-off valves at the unit inlet and outlet
• Installation of self-regulating heating cables for freeze protection
• Hydraulic circuit upgrade using hydromodule