EWAT-B chiller

EWAT-B

First air cooled chiller with environmental-friendly R-32 refrigerant

Daikin, world’s first company introducing a new generation of air cooled scroll chiller series with refrigerant R-32.

Daikin, world’s first company introducing a new generation of air cooled scroll chiller series with refrigerant R-32.

Daikin is continuously leading in chiller technology, striving again for innovation with the new generation of air cooled chillers with R-32 refrigerant, expanding it’s Bluevolution range to larger capacities.

Why has Daikin introduced R-32 models?

The global warming potential of R-32 refrigerant is 675, which is only one third compared to commonly used refrigerant R-410. Thanks to the lower flammability classification (R-32 refrigerant falls into category class A2L in ISO817), it can be safely used in many applications including chilled water systems. As a single component refrigerant, R-32 is also easier to recycle and reuse another environmental plus in its favour.

Why has Daikin introduced R-32 models?

Why choose


EWAT-B chiller series?

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  • Top class efficiency, SEER up to 4,7.
  • Overcoming 2021 Eco-design requirements!
  • Environmental friendly refrigerant → First in the market
  • New R-32 optimized scroll compressors and heat exchangers
  • The Global Warming Potential (GWP) of R-32 refrigerant is 675, which is only one third compared to commonly used refrigerant R-410 
  • The low GWP R-32 refrigerant falls into category class A2L in ISO817 and it can be safely used in many applications including chilled water systems
  • As a single component refrigerant, R-32 is also easier to recycle and reuse another environmental plus in its favour
  • Wide capacity range: 80 – 700 kW
  • Microchannel condensing coil, for reduced refrigerant charge
  • Silver and Gold efficiency versions
  • 3 sound configurations
  • Full compatibility with Daikin on Site
  • New Hydronic Kit configurations (single and twin pump, inertial tank, VFD)
  • Single and dual circuit version overlapping between 150 kW and 350 kW
    ›› Single circuit units fits 2 or 3 compressors
    ›› Dual circuit units fits 4 or 5 or 6 compressors
  • Extensive option lists
  • Fan speed modulation option (VFD)

Two different layouts

Single-V Layout

››  Slim layout

››  Higher flexibility: new intermediate
sound configuration for both Silver
and Gold versions

 

 

 

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Modular-V Layout

›› Brand new layout

›› Better part load efficiency (SEER)
vs previous generation:

›› +4% with standard
arrangement

›› +7% with VFD fan option

 

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New free cooling glycolfree options on the EWAT~B chiller range:

  • Free Cooling Migration – Light
  • Free Cooling Migration – Full
  • Free Cooling Migration - Full with Hydro Kit
EWAT-B new free cooling options
Free Cooling Migration – Light:

Once activated, this solution allows the refrigerant natural migration from evaporator to condenser, bypassing at the same time the compressors and expansion valve. Thanks to the design of the exchangers, with extremely low pressure drops, this solution does not need additional devices to pump the refrigerant, because it uses the natural migration principle. The Free-Cooling capacity obtainable is 25% of the Nominal Cooling capacity of the unit.

Free Cooling Migration – Full:

Includes an additional flooded evaporator per circuit in parallel to the standard plates heat exchanger that allows an improvement of performances.

This solution uses the same principle of light migration but, being equipped with an additional “Shell & Tube” refrigerant to water exchanger, it allows a bigger capacity obtainable. Thanks to the design of the exchangers, with extremely low pressure drops and the increased distance in quota from condenser to evaporator, this solution can provide a Free Cooling capacity equivalent to 75% of the nominal capacity of the unit.

Free Cooling Migration - Full with Hydro Kit:

Includes Free Cooling Migration - Full and water side distribution piping that allows the automatic switch of the water flow between mechanical cooling and free cooling heat exchanger. The presence of the additional piping can affect unit footprint.

EWAT-B extensive option lists

Extensive option lists

Including new options:

 

  • Buffer tank 

Unit mounted buffer tank available all across the range for plug and play solution.

  • Partial heat recovery 

Introduction of condensation control allowing to mantain heat recovery capacity at lower ambient temperatures with unit operating at full capacity

 

 

  HR @ 35°C ambient HR @ 20°C ambient
Current ~ 15% ~ 3%
New ~ 15% ~ 15%
  • VFD pumps and variable flow control 

›  Variable pump speed control via extenral 0-10 volt signal
›  “Thermostat on” and “thermostat off” pump speed management
›  Variable primary flow control

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Connectivity

mAP

››  Android app

››  Replicate the controller of the unit

››  Operate on the unit by remote smart device (tablet, smartphone, PC)

››  Soon available on PlayStore

 

EWAT-B connectivity

Portable touch screen option

››  Display 10”

››  Touch screen

››  Network: Wireless, Bluetooth, GPS, GSM, ecc…

››  Interface: SIM card, RJ45, RS232, USB, HDMI, audio

 

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Daikin on Site

Fully compatible with Daikin on Site cloud based platform that allows a number of advanced functionalities including:

››  Remote monitoring,

››  System optimization

››  Preventive maintenance

Remote access with one click via LAN or GSM modem

Learn more

The EWAT-B range

EWAT-B-XR

EWAT-B-XL

EWAT-B-XS

EWAT-B-SR

EWAT-B-SL

EWAT-B-SS