WRE

WRE

40-750 kW

Water-cooled packaged units for indoor installation with high seasonal efficiency

Plus

  • High seasonal efficiency values
  • Production of hot water up to 55°C
  • Electronic expansion valve
  • Up to 6 compressors
  • 1 or 2 cooling circuits
  • Remote connectivity with the most common protocols
  • Compact dimensions
  • 3 different acoustic configurations (Standard – Low noise – Quite)

Features and Versions

  • Scroll compressor
  • R-410A refrigerant
  • Cooling
  • ERP 2021
  • 27 models
  • Heat pumps
  • Standard execution
  • Low noise execution
  • Super low noise execution
  • Version available with or without protective panelling

Technical characteristics

WRE is the new Galletti series of self-contained reversible heat pumps and water chillers for indoor installation, suitable for both air conditioning and industrial process applications. The range covers capacities from 40 kW up to a maximum of 750 kW and is characterised by extremely high levels of seasonal efficiency (in compliance with ErP 2021 requirements) and reduced space requirements in order to facilitate access to technical compartments (for capacities of up to 560 kW, the width and height are less than 88 cm and 190 cm respectively). In order to increase the efficiency at partial loads, WRE models are provided with tandem or trio solutions (2 or 3 compressors on a single circuit) and equipped with electronic expansion valve as standard. Both single and dual circuit versions are available.

The use of top quality components at the cutting edge of technology in cooling, hydraulic, and electrical systems makes WRE chillers state of the art in terms of efficiency, reliability, and operating limits. In fact, the ability to produce water from -8 °C to 55 °C and use any type of natural source for dissipation is guaranteed: soil, ground water, or outside air. The high configurability of the series, which is in the DNA of Galletti, is guaranteed by 2 different versions, with and without closing panels, and 3 different acoustic configurations:  tandard, low noise, and super low noise, able to ensure a sound power level reduction of up to 12 dB(A).

The range of the configuration available is completed by the possibility of producing hot water up to 60 °C at zero cost through partial heat recovery. Lastly, the advanced microprocessor that regulates the operation of the unit allows: the control of a maximum of 2 pumps on the equipment side and 2 pumps on the source side, on/off or modulating, the possibility of cascade connection of up to 4 units and management of reversibility on both the gas side and the water side.

Main components

 Compressori scroll

Compressori scroll

Scroll-type compressors in a tandem or trio configuration equipped with IDV valve. The IDV intermediate delivery valve technology allows the compressor to avoid losses caused by overcompression and, consequently, the additional work the motor has to perform in partial-load operation, saving energy and improving seasonal and partial-load efficiency from 3% to 10%.

Structure

Made in galvanised steel sheet with a polyester powder coating for outdoors. On request the compressor compartment is completely sealed and accessible on 3 sides thanks to easily removable panels that greatly simplify all maintenance and inspection operations.

Electronic microprocessor control

It allows complete management of the unit. The electronic control system allows the setpoint to be adjusted automatically according to the outdoor temperature in order to reduce consumption and broaden the working temperature range. With the advanced microprocessor control it is possible to set up LAN networks for controlling 4 units in parallel.

Heat exchangers

All units have heat exchangers with braze-welded AISI 316 austenitic stainless steel plates and connections made of AISI 316 L, characterised by a reduced carbon content to facilitate brazing.

Cooling circuit

It can be produced in 2 different versions with the same power rating (Effciency Pack); using mainly: R410A scroll compressors, brazed plate heat exchangers, and electronic expansion valves.

Related accessories

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