The new WLA Precision range of industrial liquid chillers has been designed to guarantee the high standards of reliability required by production processes running 24/7 and perfectly meets the needs of applications that demand high standards of quality and reliability.

Thanks to the careful design and dedicated technological solutions such as evaporators and condensers with high exchange surface area, the electronic expansion valve as standard and the new high-efficiency axial fans, the WLA Precision ErP range is characterised by its high thermodynamic performance, which exceeds the minimum energy efficiency requirements imposed by the European ErP Ecodesign directive.

• Energy Efficiency: thermodynamic optimisation and increased exchange surfaces allow WLA precision ErP units to comply with the limits required by ErP2021 – SEPR HT (EU) 2016/2281 – SEPR MT (EU) 2015/1095.
• Extended operating limits: max outdoor air temperature +45°C; min -10°C (-20°C in LT version); max evaporator water outlet temperature up to +25°C; min 0°C (-10°C in BRINE version);
• Outdoor installations: the electrical panel made in accordance with EN 60204 and with IP44 protection rating (IP54 optional) allows outdoor installation;
• STANDARD version – Non ferrous: includes an AISI316 brazed plate evaporator protected from freezing by a differential pressure switch and an anti-freeze probe. The hydronic module is suitable for atmospheric hydraulic circuits and includes an AISI304 tank equipped with a level sensor and the circuitry composed of non-ferrous materials;
• Electronic Expansion Valve (EEV): optimises the operation of the refrigerant circuit under all thermal load conditions;
• Automatic hydraulic bypass valve: protects the pump and hydraulic circuit as a pressure limiting device;
• Phase monitor: provides protection against loss and electrical phase reversal;
• High efficiency brushless EC axial fans: standard for LASER and low ambient temperature LT versions.

• New PROCESS version for Pressurised Hydraulic Circuits: Includes a single-circuit direct expansion shell and tube evaporator with a carbon steel shell and copper tubes installed inside a carbon steel hydraulic tank. The design features of this technical solution allow the WLAprecision to operate reliably in heavy industrial applications and even with process fluids containing impurities.
• New LASER hysteresis version ±0.5K (mod. 5A- 7B): the LASERPACK control system integrates a hot gas bypass valve for regulating cooling capacity, brushless EC fans and a microprocessor control with an advanced PI algorithm to guarantee a standard hysteresis of ±0.5K under variable load conditions.
• New LT version for low ambient temperature -20°C: featuring dedicated control software, brushless EC fans and thermal insulation of the hydraulic circuit. BRINE centrifugal pumps feature an oversized motor suitable for high glycol concentrations.
• New BRINE version for glycol water outlet temperatures down to -10°C: includes hydraulic circuit insulation, and pumps with an oversized motor suitable for operation with high glycol concentrations.
• LOW GWP version with low environmental impact:
  version available on request with environmentally friendly refrigerants (GWP < 750) F-Gas phasedown compliant.
  • R454B HFO refrigerant based on hydro-olefin. Class A2L slightly flammable. ODP = 0 and a low GWP value of 467.
  • R32 refrigerante HFC. Classe A2L leggermente infiammabile. ODP = 0 ed un basso valore GWP di 675.

The SEC.blue programmable microprocessor control allows optimisation of the operation of the refrigeration and hydronic circuits and enables easy connection of the WLA precision units to all BMS management systems. The proprietary operating system is generally very flexible and can be extended with numerous additional parameters and functions on request.

Includes:

• • • IP54 UV-resistant graphic display with menus in 6 languages: Italian, English, German, French, Russian, Spanish;
    • tft-LCD colour touch screen display 7 (option);
    • General alarm dry contact;
    • Remote ON/OFF digital input;
    • No. 5 On-Off outputs (dry contacts) for alarms and pre-alarms settable via software;
    • Remote control: graphic display / touch screen (option)
      Sequencing function: allows up to 10 chillers, divided into 5 work zones, to be connected via a special line and managed as a single unit;
    • Emergency cooling function: in the event of failure of a chiller, an alternating chiller activation function is available to ensure continuity of operation;
    • Dynamic set-point function: allows the fluid temperature to be adapted to the ambient temperature. It is also possible to change the chiller set-point via an integrated 4÷20mA analogue input;
    • Integration with BMS supervision systems: SEC.blue includes as standard: Ethernet port, on RJ45 connector, for communication with HTTP, SNMP, ModBus TCP protocol and remote software update; RS485 port, for communication via ModBus RTU protocol; Monitoring via integrated web page, with alarm functions via email;
    • LASER function: fine adjustment of process temperature (hysteresis ± 0.5K);
    • Unloading function: keeps the chiller running even at high ambient temperatures;
    • Demand limit function: allows the power consumption to be limited (ENERGY METER option required);

Compressed air treatment