Daikin EWWQ230L-SS [5/41] General characteristics
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Daikin EWWQ230L-SS [5/41] General characteristics

Daikin EWWQ090G-SS [5/41] General characteristics
GENERAL CHARACTERISTICS
Control section - main features
Control Section has the following feature.
• Management of the refrigerant circuit capacity
• Chiller enabled to work in partial failure condition (only for 2 circuits unit)
• Full routine operation at condition of:
- high thermal load
- high evaporator entering water temperature (start-up)
• Display of evaporator entering/leaving water temperature.
•Display of condensing-evaporating temperature and pressure, suction superheat for each circuit.
• Leaving water evaporator temperature regulation .
• Compressor and pumps hours counter.
• Display of Status Safety Devices.
• Number of starts and compressor working hours.
• Optimized management of compressor load.
• 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).
• Set point Reset (optional).
• Application and system upgrade with commercial SD cards.
• Ethernet port for remote or local servicing using standard web browsers.
Safety device / logic for each refrigerant circuit
The following devices / logics are available.
• High pressure (pressure switch).
• High pressure (transducer).
• Low pressure (transducer).
• High motor winding temperature.
• No pressure change at start
System security
The following securities are available.
• Phase monitor.
• Freeze protection.
Regulation type
Proportional + integral + derivative regulation on the evaporator leaving water output probe.
Unit controller
Unit controller built-in terminal has the following features.
• 164x44 dots liquid crystal display with white back lighting. Supports Unicode fonts for multi-lingual.
• Key-pad consisting of 3 keys.
• Push’n’Roll control for an increased usability.
• Memory to protect the data.
• General faults alarm relays.
• Password access to modify the setting.
• Application security to prevent application tampering or hardware usability with third party applications.
• Service report displaying all running hours and general conditions.
• Alarm history memory to allow an easy fault analysis.
Supervising systems (on request)
Unit controller remote communication
Unit controller is able to communicate to BMS (Building Management System) based on the most common protocols
as:
• ModbusRTU
• LonWorks, now also based on the international 8040 Standard Chiller Profile and LonMark Technology.
• BacNet BTP certifief over IP and MS/TP (class 4) (Native).
• Ethernet TCP/IP.
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