Heat pumps
Reversible air-to-water units
Reversible unit, air source for outdoor installation 148-319 kW
NX-N 0604P - 1204P

Outdoor reversible unit for the production of chilled/hot water with hermetic rotary Scroll compressors, ozone-friendly refrigerant R410A, axial-flow fans, copper tubes aluminum fins air coils, braze-welded plate-type exchanger and thermostatic expansion valve. External panels in pre-clad sheet steel and base in galvanised steel with paint finish. The range is composed by units equipped with four compressors in tandem
configuration on two independent refrigerant circuits.


W3000SE Compact
The W3000SE Compact controller offers advanced functions and algorithms.

The keypad features an easy-to-use interface and a complete LCD display, allowing to consult and intervene on the unit by means of a multi-level menu, with selectable language setting.

The regulation is based on the exclusive QuickMind algorithm, including self-adaptive control logics, beneficial in low water content systems. As alternatives the proportional- or proportional-integral regulations are also available.

The diagnostics includes a complete alarm management, with the "black-box" and alarm logging functions for enhanced analysis of the unit operation.

For multiple units’ systems, the regulation of the resources, via optional proprietary devices, can be implemented. Energy metering, for both consumption and capacity, can also be developed. Supervision can be easily developed via proprietary devices or the integration in third party systems by means of the most common protocols as ModBus, Bacnet, Bacnet-over-IP, Echelon LonWorks.

Compatibility with the remote keyboard managing up to 10 units.

Availability of an internal real time clock for operation scheduling (4-day profiles with 10 hour belts).

The defrost adopts a proprietary self-adaptive logic, which features the monitoring of numerous operational parameters. This allows to reduce the number and duration of the defrost cycles, with a benefit for the overall energy efficiency.



K          Key efficiency, compact version
LN-K   Low Noise, Key efficiency and compact version
SL-K   Super Low noise, Key efficiency and compact version


-      Basic function

D   Partial condensing heat recovery function


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


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
  • Rubber anti-vibration mounting kit. Spring anti-vibration mounting kit (4 compressors models only)