Daikin EWAD465TZ-SS [2/75] Features and benefits
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Daikin EWAD465TZ-SS [2/75] Features and benefits

Daikin EWAD490TZ-XR [2/75] Features and benefits
FEATURES AND BENEFITS
Low operating cost and extended operating life This chiller range is the result of careful design, aimed to optimize
the energy efficiency of the chillers, with the objective of bringing down operating costs and improving installation profitability,
effectiveness and economical management.
The chillers feature a high efficiency single screw Inverter driven compressor design, large condenser coil surface area for maximum
heat transfer and low discharge pressure, advanced technology condenser fans and a ‘shell&tube’ or plate heat exchanger evaporator
with low refrigerant pressure drops.
Low operating sound levels Very low sound levels both at full load and part load conditions are achieved by the latest
compressor design and by a unique new fan that moves large volume of air at exceptionally low sound levels and by the virtually
vibration-free operation.
Outstanding reliability The chillers have one or two truly independent refrigerant circuits, in order to assure maximum safety
for any maintenance, whether planned or not. They are equipped with a rugged compressor design with advanced composite
compressor gaterotors material, a proactive control logic and are full factory-run-tested to optimized trouble-free operation.
Infinite capacity control Cooling capacity control is infinitely variable by means of a Inverter driven screw compressor
controlled by microprocessor system. Each unit has infinitely variable capacity control from 100% down to minimum capacity which is
variable depending on unit model (between 33% and 22% on single circuit units and between 15% and 11% for dual circuit models).
This modulation allows the compressor capacity to exactly match the building cooling load without any leaving evaporator water
temperature fluctuation. This chilled water temperature fluctuation is avoided only with a stepless control.
Inverter stepless regulation Based on the
geographical location and the application, the load profile of a
building can vary enormously but our system has an infinitely
variable load regulation without pre-set steps for a perfect
comfort solution.
The stepless regulation provides the required power to meet the
demand, ensuring highly accurate leaving water temperature
control and so delivering optimal comfort as well as cost savings.
Superior control logic The new MicroTech III controller provides an easy to use control environmental. The control logic is
designed to provide maximum efficiency, to continue operation in unusual operating conditions and to provide a history of unit
operation. One of the greatest benefits is the easy interface with LonWorks, Bacnet, Ethernet TCP/IP or Modbus communications.
Dynamic Condensing Pressure Management
A new superior software logic has been developed to get the
highest efficiency at whichever operating condition: thanks to the
Dynamic Condensing Pressure Management the chiller controller
adjusts the condensing pressure setpoint to minimize the overall
chiller power input.
The result is an efficiency optimization thanks to the achievement
of the most efficient working point for the unit at any ambient
temperature.
High full load and part load efficiency High efficiency at full load, but especially maximum efficiency at part load
conditions - which is the majority of the operating time of a chiller - are the factors that allow considerable savings in a system’s annual
energy costs.
With the objective of bringing down these operating costs and improving a building’s economical management, this inverter range has
been designed to optimize both full load efficiency (EER) and the seasonal energy efficiency (ESEER).
Seasonal quietness Very low sound levels in part load conditions are achieved by varying the fan speed, but especially thanks to
the variation of compressor frequency, which ensure the minimum sound level at all the time.
Quick comfort conditions The ability to vary the output power in direct relation to the cooling requirements of the system,
allow the possibility to achieve building comfort conditions much faster at start-up.
Low starting current No current spikes at start-up. The starting current is always lower than current absorbed in the maximum
operating conditions (FLA).
Displacement power factor always > 0.95 This inverter range can operate always with a displacement power factor >
0.95, which allows building owners to avoid power factor penalties and decrease electrical losses in cable and transformers.
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