Microsoft Word - DEUEN18-029 Centrifugal oil free water cooled chillers.docx
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Why choose
DZ chiller series?
Single compressor
From 320 kW up to 742 kW on
R-134a platform
From 227 kW up to 478 kW on
R-1234ze(E) platform
Dual compressor
From 610 kW up to 1478 kW on
R-134a platform
From 429 kW up to 945 on
R-1234ze(E) platform
Triple compressor
From 1038 kW up to 2173 kW on
R-134a platform
From 741 kW up to 1417 kW on
R-1234ze(E) platform
Magnetic Bearing Technology
Fitted with centrifugal compressors utilizing frictionless magnetic bearings for oil-free operation, integrated variable-frequency drives, and high-speed direct drive technology
Industry leading part load efficiency
The high efficiency compressor is matched with highly efficient heat exchangers to make an impressive chiller
Increased reliability
The frictionless magnetic bearing design needs no oil management system, resulting in increased reliability and reduced maintenance
Green building design
Developed to achieve maximum efficiency and is future-proofed to comply with existing design and regulatory standards as well as longer-term EU energy goals
Application flexibility
The DZ Series includes models suitable for both high condensing operation (Dry Cooler application) and low condensing operation (Cooling Tower applications)
Designed for compactness
Footprint reduced to the minimum levels thanks to a unique design with stacked heat exchangers
Hot Gas Bypass (HGBP)
The hot gas bypass reduces compressor cycling in order to stabilize the chilled water temperature at very low loads. HGBP feeds discharge gas directly into the evaporator when the system load falls below 10% compressor capacity. This hot gas provides a stable refrigerant flow and keeps the chiller from short cycling under reduced load conditions combined with high lift. It also reduces surge potential on heat pump mode units.
Heat Pump Version
The Heat Pump Version includes Pursuit Mode, which allows reversibility on the water side. A dedicated switch installed on the unit's electrical panel enables a user to choose between cooling or heating mode. If the user chooses a communication card, then the BMS can manage the cooling and heating modes. The unit includes HGBP and an additional 20 mm of insulation.
Option flexibility
Wide range of options, such as the Rapid Re-Start, allowing the unit to restart after a power failure within 26 seconds following power restoration, an automatic transfer switch to backup generator. Comprehensive solution for data centers applications.
Low noise solution with dedicated Compressor sound proof cabinet to ensure outstanding flexibility to match any specific application.
Connectivity
Enabled for operation via the Daikin on Site platform The DZ can be monitored remotely, allowing the system to be accessed with one click, for system optimization and preventative maintenance.
Enabled for operation with an App specifically designed to operate on the unit by remote smart device (tablet, smartphone, PC). App is characterized by and easy-to-access data, and it allows an effective graphical representation of the main data and displaying the unit operating parameters.
