LUNOS Nexxt Decentralised Energy/Heat Recovery Ventilation Systems
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The Evolution in Decentralised Ventilation
LUNOS, the company that confirmed its position as a market leader in decentralised ventilation with the highly successful e2, has now opened up the decentralised market with the introduction of the Nexxt. The Nexxt is a decentralised heat recovery unit which can be used in kindergartens, schools, offices, hotels, and of course in homes and apartments. The Nexxt is also suitable for use in regions where large wind loads prevail, and when there is a need for additional sound proofing. With the optional use of an F9 filter, the Nexxt exceeds all standards of hygiene many times over.
The LUNOS Nexxt-E is a decentralised energy recovery ventilation (ERV) unit achieving a heat recovery rate of up to 85%. It is specially designed for larger spaces, not only homes but commercial spaces such as schools, offices, hotels and hospitals.
Heat transfer is made via an enthalpy heat exchanger. Power input commences as low as 5W and volume flows of over 100 m³/h can be generated.
As standard, the Nexxt-E introduces a new operating concept: automated control via humidity and temperature sensors.
Components
LUNOS Two-Way Outer Hood
A two-channel outer screen with built-in insect protection mesh. It's weatherproof so that it can be installed outdoors. Fresh air is drawn in one side while stale air is exhausted out the other side.
LUNOS Nexxt Installation Housing
This houses the Nexxt ventilation unit containing the heat recovery core and EC fans. A surface mount kit is included, but the housing can be flush mounted in the wall if desired.
LUNOS Nexxt-E Ventilation Unit with Enthalpy Heat Exchanger and EC Centrifugal Fans
This is the key component of the Nexxt. The enthalpy heat exchanger achieves heat recovery levels of up to 85%. Equipped with humidity and temperature sensors, the automatic control ensures efficient ventilation with humidity protection. Nestled in a flow-optimised EPP chassis, the EC motors, which are already very quiet, are virtually "silenced".
LUNOS Nexxt Inner Screen with Control Panel and Filter Change Indicator
All of the controls are on an easily accessible and elegant front screen. This screen provides clear but subtle feedback with backlighting. The backlighting level can be adjusted or disabled altogether. Replacable filters are available for filter classes M5, F7 and F9.
Wall Duct with 160mm Wall-Tubes
The standard LUNOS 160mm wall-tube is used for the single wall penetration to the external environment and combines both the air inlet and outlet within one wall penetration.
Features and Benefits
LUNOS decentralised energy recovery ventilation (ERV) systems provide fresh, clean air to your building, without losing valuable heat (or coolth). Decentralised systems do not require ducting, and are therefore typically much easier to install. This makes them perfect for retro-fittings, or buildings that simply do not have space to install a centralised ducting system.
For a new build, or an existing home with ample access to a roof or floor cavity, centralised systems may be more suitable.
Low Operation Noise Due to EC Motor Fan Technology
- The radial EC motors of the Nexxt-E are market leading centrifugal fans. Nestled in a flow-optimised EPP (expanded polypropylene) chassis, the EC motors, which are already very quiet, are virtually "silenced". The Nexxt-E is currently one of the quietest units in its class.
- Smaller and lower power fans make less noise than larger and more powerful centralised systems.
Maximum Noise Protection
- Due to intelligent design and internal baffling a maximum sound attention level of 56 dB can be achieved. This allows the Nexxt-E to be used in areas with high external noise levels (and even at airports).
Efficiency
- Thanks to its very low power consumption, the Nexxt-E is very energy-efficient, thus making an active contribution to environmental protection.
- The highly efficient EC technology enables low power consumption.
- The ductless system leads to an inherently lower pressure drop, which requires smaller fans, and generally results in a more efficient system.
Heat Recovery and Control Technology
- The key component of the Nexxt-E is the built-in device with an enthalpy heat exchanger.
- The enthalpy heat exchanger achieves heat recovery levels of up to 85% (73% according to EN 13141-8 at 77 m³/h).
- The integrated control provides for perfect interaction.
- Equipped with humidity and temperature sensors for automatic control, the Nexxt-E ensures efficient ventilation with humidity protection.
- Optional sensors (such as a CO2 sensor) can be integrated.
The Nexxt-E Installation Housing Can Be Used Universally
- The Nexxt-E can be installed surface-mounted or flush-mounted (both options included).
- The included surface-mount kit is designed for installation on the outer wall and has a stylish design frame which makes it visually appealing.
- The flush-mounted version requires a wall thickness of at least 280 mm.
Other Benefits
- RETROFIT READY
With no complicated ducting runs required, the decentralised systems are quick and easy to install. - COMPACT DESIGN
Decentralised systems are the perfect solution if your building design does not allow space for a large centralised unit. - VERSATILITY
The units can be installed in areas where ducting may not be able to travel. - REDUNDANCY
Because the units are independent, in the unlikely event that one unit fails, the other units in the team will have you covered.
Specifications
Nexxt-E
Enthalpy ERV
85%
73%
15 - 110 m3/h
40 dB(A)
22 W
M5 (Standard)
F7 (Optional)
F9 (Optional)
Humidity (Standard)
Temperature (Standard)
CO2 (Optional)
USB (Firmware Updates)
Input Port (External Switching)
162mm
110mm (Surface Mounting)
280mm (Flush Mounting)
230 V / 50 Hz (Internal Hardwired)
230 V / 50 Hz (External Plug)
480mm Height
480mm Width
170mm Depth
510mm Height
510mm Width
66mm Depth
235mm Height
205mm Width
72mm Depth
18kg
1 x LUNOS Nexxt-E Enthalpy Core (NXT-E 040130).
1 x LUNOS Nexxt Installation Housing (3/NXT 040102).
1 x LUNOS Nexxt Surface Mounting Kit (3/NXT-AP 040103).
1 x LUNOS Nexxt Internal Controller Screen (9/NXT-IBF 040105).
1 x LUNOS Nexxt Aluminium Dual External Grille (1/HWE-2 040107).
Electric Damper Addon
(Closes the External Ducts if Switched Off)
FAQ
What is an electronically commutated EC motor?
An electronically commutated (EC) motor is designed to run on an alternating current (AC) power supply, but it in fact bears a closer resemblance to a direct current (DC) motor. It is essentially a permanent magnet, brushless DC motor that incorporates on-board electronics. The added electronics allow an EC motor to combine the best features from both AC and DC motors, and then improve on them. For this reason, an EC motor is in a category of its own.
By utilizing this technology, EC fans are highly efficient and pay for themselves through lower operating costs and extended service life. They also provide many operational benefits that are often overlooked.
EC motors use permanent magnets and electrical windings to generate their magnetic fields, in a similar fashion to brushed DC motors. However, as their name suggests, they achieve commutation electronically rather than mechanically. This is only possible by incorporating on-board electronics within the housing of an electronically commutated EC motor.
The on-board electronics include a rectifier that converts the AC supply to DC. An integrated controller then directs the right amount of current, in the right direction, at the right time, through each of the windings. This develops magnetic poles in the stator, which interact with the permanent magnets in the rotor.
The position of each magnet is determined by using Hall effect sensors. The appropriate magnets are attracted, in sequence, to the magnetic poles in the stator. Simultaneously, the rest of the stator windings are charged with the reverse polarity. These attraction and repulsion forces combine to achieve rotation and produce the optimal torque. Since this is all done electronically, precise motor monitoring and control are possible.
What are the advantages of an electronically commutated EC motor?
Energy Efficiency
EC motor efficiency is often above 90%, allowing EC fans to consume up to 70% less energy, when compared to conventional fans. Running an EC fan at 80% speed saves nearly 50% of the energy.
Ease of Control
By continuously monitoring motor functions and automatically adjusting the control input, high efficiency is maintained throughout the operable speed range. EC motors are often capable of being turned down to 20% of full speed, while still maintaining 85% efficiency. Sensors that produce a 0-10V signal provide speed control without the need for a complex variable frequency drive.
Versatility
EC motors are capable of exceeding rated speeds. This allows fans with EC motors to achieve higher capacity within a smaller fan package.
Can the fan speed be adjusted?
EC motors are variable speed motors. They use a 0-10V control signal to adjust their speed precisely between 0% and 100%.
The Nexxt Inner Screen with Control Panel features increase/decrease flow volume buttons.
Who manufactures the fan motors?
The EC fan motors inside the Nexxt ventilation unit are manufactured by ebm-papst in Germany.
Where are LUNOS Nexxt decentralised ventilation systems made?
Germany.
What is the warranty of LUNOS Nexxt decentralised ventilation systems?
A 2 year warranty provides peace of mind.
What is the difference between an HRV and an ERV?
HRVs and ERVs are similar devices in that both supply air to the home and exhaust stale air while recovering energy from the exhaust air in the process. The primary difference between the two is that an HRV transfers heat while an ERV transfers both heat and moisture.
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What Makes Fresh Ventilation Different
Fresh Ventilation is a family owned and operated business. Our main business has specialised in the installation of premium quality ventilation systems for over 10 years.
Our focus is on premium products and expert advice to create ventilation systems that actually work.
All of our kits include:
Personal installation maps tailored to your home.
One-on-one conversations to help us understand what is going on and recommend how best to solve it.
One-on-one telephone and/or FaceTime conversations to help you with installing your system.
Installation photos and videos outlining best practices and things to avoid.
