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EWAQ320F-XL
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Daikin EWAQ320F-XL [4/67] General characteristics

GENERAL CHARACTERISTICS

Control section - main features Control Section has the following feature.

• Management of the refrigerant circuit 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 superheat for each circuit.

• Leaving water evaporator temperature regulation.

• Compressor and evaporator pumps hours counter.

• Display of Status Safety Devices.

• Number of starts and compressor working hours.

• Optimized management of circuit load.

• Fan management according to condensing pressure.

• Re-start in case of power failure (automatic / manual).

• 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.

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.

• Low pressure ratio.

• No pressure change at start.

System security The following securities are available.

• Low Ambient temperature lock-out.

• Freeze protection.

Regulation type Proportional + integral + derivative regulation on the evaporator leaving water output probe.

MicroTech III MicroTech III 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)

MicroTech III remote communication

MicroTech III 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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Daikin EWAQ320F-XL [4/67] General characteristics

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