NX-WN 0122 - 1204

Reversible heat pump, water source 37,5 - 396 kW

Water to water indoor unit for the production of chilled/hot water with hermetic rotary Scroll compressors, braze-welded plate-type exchanger, and electronic expansion valve. Base and frame in hot-galvanized shaped steel sheets with a suitable thickness. All parts polyester-powder painted to ensure total weather resistance, RAL 7035. The range includes the single-circuit two-compressor versions and the dual circuit four-compressor versions.

EUROPE

CE

50 Hz

Topic overview

Product features
Technical data
Produkt-Informationen
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Product features

Features

HIGH EFFICIENCY

Very high efficiency at full and partial loads, at the highest market levels, thanks to the adopted technological solutions. These units ensure low operating costs and therefore a quick payback time.

ErP READY

The highest level of efficiency at part loads can meet and exceed the minimum seasonal efficiency for heating, SCOP (only for reversible units) and for cooling, SEER, according with the eco-sustainable design requirements for all products using energy. The units already comply with the minimum seasonal energy efficiency requirements that will start from 2021.

VARIBLE PRIMARY FLOW (OPTION)

Energy savings due to variable pump speed management based on load demand and the variable flow assures the functioning of the units also with critical working conditions. VPF (Variable Primary Flow) available for sizes 0604-1204.

EXTREMELY SILENT OPERATION

Extremely silent operation together with high efficiency, thanks to dedicated acoustic devices and a precise design for the choice of the components.

INTEGRATED HYDRONIC MODULE

The built-in hydronic module already contains the main water circuit components; it is available as option with single or twin in-line pump, for achieving low head, fixed or variable speed, available for user side and source side (up to 4 pumps).

INTEGRATED CONDENSATION CONTROL

The electronics of the units manages the most suitable condensing control for each type of application: pressure-controlled valve, two or three-way modulating valve, 0-10V signal for variable speed driven pumps.

TOTAL VERSATILITY

The units have been designed with a range of integrated accessories, keeping in mind the operation with open loop (well water or ground water), dry cooler, or cooling tower and they are suitable for geothermal application so as to satisfy all service systems and installation requirements.

ELECTRONIC EXPANSION VALVE SUPPLIED STANDARD

The use of the electronic expansion valve generates considerable benefits, especially in cases of variable demand and at different working conditions. It guarantees energy savings due to efficiency optimization in various different working conditions which translates into a reduction in operating consumption, a faster start-up of the unit and a wider extension of the operating limits.

Technical data

Produkt-Informationen

- - Standard efficiency

- - Basic function

Touch Screen visual display
Set-up for remote connectivity with ModBus/Echelon protocol cards
Outside air temperature probe for plant water set point compensation.
Integral acoustical enclosure (type base)
Thicker soundproofing insulation
User side and source side hydronic kit available in different configurations
VPF (Variable Primary Flow) system
Condensing control device: two or three-way modulating pressure-controlled valve and inverter on pumps

Electronic control W3000TE

W3000TE Compact features function controls and LCD display for viewing data and activating the unit, via a multilevel menu, with settable display language. As alternative, the innovative KIPlink user interface allows one to operate on the unit directly from the smartphone or tablet. The controller provides water temperature control for the heating systems, cooling systems (only for reversible units), as well as for domestic hot water (only for reversible units). These different temperatures are managed automatically based on the different conditions in which the system operates, with the possibility to assign specific levels of priority to domestic hot water production, depending on the needs of the application. Regulation 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. Complete alarm management system is available, with the “black-box” and the alarm history display functions. For multiple unit systems, the regulation of the resources, via optional proprietary devices, can be implemented. Energy metering, for both consumption and capacity, can also be developed. Built-in clock can create an operating profile containing up to 4 typical days and 10 time bands, essential for efficient programming of energy production and fundamental for managing the Legionella prevention cycles. Supervision is available either using proprietary devices or by integration into third party systems using ModBus, BACnet, BACnet-over-IP and Echelon LonWorks protocols. A dedicated wall-mounted keypad can be used for remote control of all the functions. Optionally (VPF package), capacity modulation can be integrated with hydraulic flow modulation, thanks to inverter-driven pumps and to specific resources for the hydraulic circuit.