Daikin EWAD420T-XSB2 [81/81] Technical specifications

TECHNICAL SPECIFICATIONS

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Controller main features

Controller shall be guarantee following minimum functions:

• 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.

• 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.

• Master / Slave (provided as standard)

• Two different sets of default parameters could be stored for easy restore.

High Level Communications

Interface (on request) The chiller shall be 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 certified over IP