Daikin EWAD465TZ-SS [5/75] General characteristics
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Daikin EWAD465TZ-SS [5/75] General characteristics

Daikin EWAD415TZ-SR [5/75] General characteristics
GENERAL CHARACTERISTICS
Refrigerant circuit Each unit has one or two independent refrigerant circuits and each one includes:
• Compressor Inverter driven with integrated oil separator
• Refrigerant
• Evaporator
• Air Cooled Condenser
• Electronic expansion valve
• Discharge line shut off valve
• Liquid line shut off valve
• Sight glass with moisture indicator
• Filter drier
• Charging valves
• High pressure switch
• High pressure transducers
• Low pressure transducers
• Oil pressure transducer
• Suction temperature sensor
Electrical control panel Power and control are located in the main panel that is manufactured to ensure protection against all
weather conditions. The electrical panel is IP54 and (when opening the doors) internally protected against possible accidental contact
with live parts. The main panel is fitted with a main switch interlocked door that shuts off power supply when opening.
Power Section
The power section includes compressors and fans protection devices, fans starters and control circuit power supply.
MicroTech III controller
MicroTech III controller is installed as standard; it can be used to modify unit set-points and check control
parameters. A built-in display shows chiller operating status plus temperatures and pressures of water, refrigerant
and air, programmable values, set-points. A sophisticated software with predictive logic, selects the most energy
efficient combination of compressors, EEXV and condenser fans to keep stable operating conditions to maximise
chiller energy efficiency and reliability.
MicroTech III is able to protect critical components based on external signals from its system (such as motor
temperatures, refrigerant gas and oil pressures, correct phase sequence, pressure switches and evaporator). The
input coming from the high pressure switch cuts all digital output from the controller in less than 50ms, this is an
additional security for the equipment.
Fast program cycle (200ms) for a precise monitoring of the system. Floating point calculations supported for
increased accuracy in Pressure / Temperature conversions.
Control section - main features
Control Section has the following feature.
• Management of the compressor stepless capacity and fans modulation.
• Chiller enabled to work in partial failure condition.
• Full routine operation at condition of:
- high ambient temperature value
- high thermal load
- high evaporator entering water temperature (start-up)
• Display of evaporator entering/leaving water temperature.
• Display of Outdoor Ambient Temperature.
• Display of condensing-evaporating temperature and pressure, suction and discharge superheat for each circuit.
• Leaving water evaporator temperature regulation (temperature tolerance = 0,1°C).
• Compressor and evaporator pumps hours counter.
• Display of Status Safety Devices.
• Number of starts and compressor working hours.
• Optimized management of compressor load.
• Fan management according to condensing pressure.
• Re-start in case of power failure (automatic / manual).
• Soft Load (optimized management of the compressor load during the start-up).
• Start at high evaporator water temperature.
• Return Reset (Set Point Reset based on return water temperature).
• OAT (Outside Ambient temperature) Reset.
• Set point Reset (optional).
• Application and system upgrade with commercial SD cards.
• Ethernet port for remote or local servicing using standard web browsers.
• Two different sets of default parameters could be stored for easy restore.
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