Mini chiller
Compact air-cooled chiller, 5–60 kW, for cooling a single machine or a small process; pump and tank built in.
Commercial chiller
Air-cooled chillers with multiple scroll compressors, 50–500 kW, for comfort cooling in hotels, shopping centres, hospitals and office towers.
Highlights
- 50–500 kW cooling capacity
- Tandem or trio scroll compressors, staged capacity control
- Two independent refrigerant circuits; if one stops, the other runs at part capacity
- Microchannel aluminium or copper-aluminium condenser with EC fans
- Low-noise version or acoustic enclosure on request
- Optional integrated hydraulic module with single or twin pumps
- Heat recovery or heat pump version for 55 °C hot water
- Building automation via Modbus and BACnet, remote monitoring
- Operation down to −12 °C outdoor air with a winter kit
Applications
- Hotels and holiday resorts
- Shopping centres
- Hospitals and clinics
- Office towers and office buildings
- School and university campuses
- Residential complexes
- Sports facilities
A commercial chiller produces the chilled water that is distributed to the whole building through fan coils and air handling units. With several scroll compressors, capacity is adjusted in steps; when the building is at part load, only the compressors that are needed run. Because comfort cooling does not reach full load for most of the year, this design noticeably lowers operating costs.
Why two independent circuits?
Two separate refrigerant circuits raise efficiency at part load; if one compressor fails, the other circuit keeps running and the building is not left entirely without cooling. In facilities that cannot tolerate an interruption, such as hospitals and hotels, this redundancy is built into the project from the start.
Project options
Where needed, a low-noise version or an acoustic enclosure and an integrated hydraulic module with single or twin pumps are added. With heat recovery or the heat pump version, 55 °C hot water is available. With a winter kit, the unit runs down to −12 °C outdoor air; it connects to building automation via Modbus or BACnet and is monitored remotely.
What we need for selection
- The building's cooling load and diversity factor
- Where the unit will stand and the noise limit: roof, garden, distance to neighbouring façades
- Whether heat recovery is needed (hot water demand)
- Whether an existing pump group will be used or an integrated hydraulic module
- The communication protocol of the building automation system
With this information the unit is selected for the building's load and quoted. The table below gives the typical range for this class; the technical documents of the selected model are shared at the quotation stage.
Technical data
| Cooling capacity range (kW) | 50 – 500 |
|---|---|
| Compressor | Multiple hermetic scroll (tandem / trio); inverter scroll option |
| Refrigerant circuits | 1 or 2 independent circuits |
| Condenser | Air-cooled, microchannel or copper-aluminium, EC fan |
| Evaporator | Stainless steel plate or shell & tube |
| Refrigerant | R410A / R32 / R454B |
| Leaving water temperature (°C) | +5 … +15 |
| Outdoor air operating range (°C) | −12 … +46 (with winter kit) |
| Capacity steps | 4 – 8 steps or stepless (inverter) |
| Power supply | 380–400 V / 3 phase / 50 Hz |
| Control and communication | Microprocessor, Modbus / BACnet, remote monitoring |
Request a quote for this product
Tell us the model and the project; we will help you choose the right capacity.
After installation, this product is serviced and maintained by our group company Aktek Elektromekanik. Service by Aktek Elektromekanik
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