Product brochures
Informative data act
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Product overview
Technical documentations - regulation (EU) N. 813/2013
Technical documentations - regulation (EU) N. 2016/2281
NX2-Q-G06 0344 - 0808
Multi-purpose outdoor unit for use in 4-pipe systems for the simultaneous production of hot and chilled water by means of two independent hydronic circuits. These units are able to satisfy the demand for hot and cold water simultaneously through a system that does not require seasonal switching and is therefore a valid alternative to traditional plants with chiller and boiler. This unit is equipped with hermetic rotary Scroll compressors, with R454B, axial fans, shell and tube heat exchangers and electronic expansion valve. The range is composed of units equipped with four, six, and eight compressors in a multi-circuit configuration.
EUROPE
CE
50 Hz
Topic overview
Product features
Features
LOW GWP REFRIGERANT
The new generation refrigerant R454B is the most eco-sustainable alternative to traditional refrigerant R410A, offering a 76% reduction in terms of GWP (Global Warming Potential GWP of R454B = 467, GWP of R410A = 1924 as per IPCC rev. 5th) and zero impact on the ozone layer.
INTEGRATED HYDRONIC GROUP
The built-in hydronic module already contains the main water circuit components; it is available with single or twin in-line pump, for achieving low or high head, available for both hot and cold water distribution systems (up to 4 pumps).
SHELL&TUBE HEAT EXCHANGER
The shell and tube exchanger provides the highest flexibility for the unit’s installation, keeping the pressure drops on the hydronic side at a minimum, thus representing the best choice for all the hydronic applications.
VARIABLE PRIMARY FLOW
Energy savings due to variable pump speed management based on load demand and the variable flow ensures the units also function in critical working conditions.
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.
WIDE OPERATING RANGE
Unit´s operation guaranteed with external air temperature down to -15°C during winter and up to 46°C during summer. Production of hot water up to 55°C without accessories.
WIDE CAPACITY RANGE
Units equipped with up to 8 scroll compressors in multi-circuits configuration for a wide capacity range, up to 800 kW of cooling capacity.
PATENTED VENTILATION SECTION LAYOUT
Technological solution patented by MEHITS to ensure the independent operation of the circuits, reduce the unit’s footprint and improve the efficiency at partial load both in heating mode and cooling mode.
Produkt-Informationen
Produkt-Informationen- K - Standard efficiency
- SL - Super-low noise version
- A - High efficiency
- - - Basic function
- Soft starters
- Remote control keyboard (distance 200m and 500m)
- Set-up for remote connectivity with ModBus, Echelon LonTalk, Bacnet protocol board
- Electronic expansion valve
- Night mode to limit the maximum noise level of the unit.
- User Limit Control (U.L.C.) allows for safe startup of the unit in critical water and air temperature conditions.
- KIPlink user interface
- Traditional coils available with prepainted fins or Fin Guard Silver protective treatment.
- EC fans with DC brushless motor
- Hydronic kit available in different configurations with 1 or 2 fixed or variable speed pumps and buffer tank
- Set-up for remote connectivity with protocols: ModBus, ModBus over IP (TCP/IP), Echelon, BacNet MS/TP RS485, Bacnet over IP, Konnex, SNMP
- Automatic circuit breakers on loads
- Compressor power factor correction
- Leak detector
Electronic control W3000+
W3000+ features an easy-to-use interface and a complete LCD display that allows one to consult and intervene by means of a multi-language menu (19 languages are available). The diagnostics includes a complete alarm management, with the “black-box” and the alarm history display for enhanced analysis of the unit operation. The programmable timer manages a weekly schedule organized into time bands to optimize unit performance by minimizing power consumption during periods of inactivity. Up to 10 daily time bands can be associated with different operating set points. As option, KIPlink is available - Keyboard In Your Pocket. KIPlink is the innovative user interface based on WiFi technology that allows one to operate on the unit directly from the smartphone or tablet.
The regulation is based on the patented “Quickmind” water temperature regulation logic uses self-adapting control to maintain flow temperatures and optimize performance even in low water content scenarios. As an alternative, the proportional or proportional-integral regulations are also available.
Optional proprietary devices can perform the adjustment of resources in systems made of several units. Consumption metering and performance measurement are possible as well.
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-over-IP, Bacnet MS/TP RS485, Konnex, ModBus TCP/IP, SNMP. Compatibility with the remote keyboard (up to 8 units).
