The HRU-FlatAIR-X-100 series extends the capability of the FlatAIR-X range, offering an optimal solution for residential spaces requiring a higher air flow rate. As a flush-mounted unit, it delivers 100 m3/h at 100 Pa, making it suitable for slightly larger studios or small to medium-sized flats. The unit maintains the core design principles of the series: a compact form factor, quiet operation, and exceptional efficiency. Its robust, self-supporting body is constructed from EPP (Expanded Polypropylene), ensuring excellent thermal and acoustic performance and contributing to a low sound power level of just 50 dB(A).
Exchanger Options and Energy Performance
Architects and installers can specify the HRU-FlatAIR-X-100 model with one of two high-efficiency heat recovery systems:
Standard Model (HRU-FlatAIR-X-100-H/CF): Equipped with a Counterflow Plastic (PET) heat exchanger, providing very high maximal thermal efficiency of up to 94.6%.
Enthalpy Model (HRU-FlatAIR-X-100E-H/CF): Features a heat and moisture-recovering enthalpy exchanger (maximal moisture efficiency up to 74.2%), which is key for maintaining healthy and balanced indoor humidity levels, especially during winter months.
Declared Properties according to EU Regulation (100-H and 100E-H Variants)
Property
HRU-FlatAIR-X-100-H (PET)
HRU-FlatAIR-X-100E-H (Enthalpy)
Max Air Flow Rate
100 m3/h @ 100 Pa
100 m3/h @ 100 Pa
Thermal Efficiency (EN 13141-7:2010)
85.7%
83.9%
Maximum Power Input
48 W
48 W
Sound Power Level
50 dB(A)
50 dB(A)
Energy Efficiency Class (SEC)
A/A+ (depending on control)
A/A+ (depending on control)
All models include a powerful 800W built-in electric pre-heater.
Installation and System Integration
The HRU-FlatAIR-X-100 ensures maximum installation flexibility and system longevity through advanced design and feature integration:
Duct Connection Advantage: The interchangeable spigot design allows for direct connection of four 75mm semi-rigid FLX ducts. This feature significantly reduces material costs and installation complexity by eliminating the need for bulky manifolds. Standard 100mm duct connection is also available.
Installation Versatility: The unit supports Suspended, Vertical, and Horizontal mounting configurations.
Three-Sided Duct Routing: Air intake and exhaust ducts can be connected from three sides, making it highly adaptable for both flush-mounted and surface-mounted finishes.
Crucial Control and System Features
Constant Flow (CF) Capability: Models specified with the CF option (e.g., -100-H-CF) ensure the system delivers a stable, constant air flow over time, automatically compensating for filter degradation and other pressure changes to guarantee design ventilation rates.
Frost Protection and Humidity: Standard features include an 800W electric pre-heater for frost protection and a built-in RH sensor for automatic humidity management.
Smart Connectivity: The unit is ready for modern control, supporting a mobile application, LOXONE, and Modbus integration.
External Connections: Includes a X25 potential-free contact for integration with a kitchen cooker hood and ports for connecting a Ground Heat Exchanger (GHE).
Filtration: Equipped with ISO Coarse 70% filters, with visual indicators (LED on unit and controller) for simplified, timely maintenance.
Filtration and Maintenance
Filtration is provided by ISO Coarse 70% filters, with an optional upgrade to ISO ePM1 55%. The pleated design maximises filtration area while maintaining low-pressure drops. Filter replacement is signalled by a dedicated LED on the unit and controller.
