Air-cooled chillers
Chiller, air source for outdoor installation 334-885 kW
NECS 1314 - 3218

Outdoor unit for the production of chilled water with hermetic rotary Scroll compressors, ozone-friendly refrigerant R410A, axial-flow fans, shell and tubes exchanger and electronic expansion valve. The range is composed by units equipped with four, six and eight compressors in multi-circuit configuration.


W3000SE Compact
The controller W3000SE Compact is characterized by proprietary advanced functions and settings. The keyboard commands and a fully functional LCD display, which allows for consultation and intervention unit by means of a multi-layer menu with a choice of the language setting. The temperature control algorithm is based on the exclusive QuickMind with self-adaptive logic, useful in systems with reduced water content. Alternatively, controls may be set proportional or proportional-integral. The diagnostic includes a comprehensive alarm management, with the black box functions (PC) and alarm (via display or PC) for a better analysis of the unit. For systems consisting of multiple units you can control the resource owners through optional devices. It can also be implemented in the accounts of consumption and performance. Supervision is provided via several options, with proprietary devices or integrated into third party systems using the ModBus, Bacnet, Bacnet-over-IP, Echelon LonWorks. Compatibility with remote keyboard (management up to 10 units). The presence of programmable timer allows the creation of a profile containing the operation up to 4 days and 10 bands. To defrost logic is employed owner of an auto-adaptive, characterized by monitoring multiple operating parameters and environmental conditions. This reduces the number and duration of the defrost for the benefit of the overall energy efficiency.



B  -  Basic
SL - Super-low noise version
CA  - High efficiency version
SL-CA   - Super-low noise, high efficiency version

-   Basic function
D - Partial condensing heat recovery function
R - Total condensing heat recovery function


The use of R410A allowed to achive better energy efficiencies with environment full respect (ODP = 0)

This new range of chiller uses aluminum micro-channel condensers that ensure a premium level of efficiency. This solution also allows to reduce the refrigerant charge with respect to traditional copper/aluminum coils, assuring the minimum allowable ratio between the refrigerant volume and the power capacity thus making this product range unique in the market, also improving the resistance against corrosion in saline or corrosive atmospheres.

The shell and tube exchanger allows to achieve the highest flexibility on the units installation, keeping the efficiency at the maximum level. For this reason, NECS represents the best choice for all the hydronic application on the residential, commercial and industrial markets.

The use of the electronic expansion valve generates considerable benefits, especially in cases of variable demand and different external conditions. It was introduced into these units as a result of accurate design choices concerning the cooling circuit and the optimisation of operation in various different working conditions 

The optional built-in hydronic module already contains the main water circuit components; it is available with single or twin in-line, for achieving both low or high head.


  • Set-up for remote connectivity with ModBus/Echelon protocol cards
  • Remote control keyboard (distance to 200m and to 500m)
  • Soft starters