Helty Flow 400 Steel STD Decentralised Commercial MVHR System for Schools & Offices

Helty Flow400 Steel Ventilation Unit (STD Model) Core Advantage: Simplified, Clean Installation and Quick Retrofitting Minimal Structural Impact: This decentralised ventilation system does not require long, bulky ductwork throughout the space. Installation requires drilling just two 200 mm diameter holes through the exterior wall (2x Ø200 mm). Significant Cost Savings: Eliminates the budget needed for ductwork design, materials, and installation, as well as the need to hide ducting behind drywall or suspended ceilings. Fast Commissioning: Installation takes minimal time and avoids long operational downtime, making it ideal for active commercial or residential spaces. Ideal for Finished Interiors (Retrofit): With a compact depth of just 22 cm (222 mm), the unit easily integrates into fully renovated rooms or buildings undergoing modernization. Flexible Placement: The sturdy steel casing of the Steel model is designed for exposed mounting on either walls or ceilings, seamlessly blending into modern interiors. CLICK FOR MORE DETAIL – CATALOGUE CLICK FOR MORE DETAIL – TECHNICAL DATA SHEET Detailed Overview of Capabilities and Technological Features High Performance and Flexible Airflow Control: Wide airflow adjustment range: from 80 to 400 m³/h. Multiple operating modes: ultra-quiet Night Mode, 4 standard speeds for everyday comfort, and a Hyperventilation (Boost) mode for rapid airing out. Advanced Energy Efficiency and Recovery: Enthalpic Counterflow Heat Exchanger: Recovers both sensible heat (up to 92% thermal efficiency) and moisture, preventing indoor air from drying out in winter and reducing the cooling load on air conditioning during summer. Energy Efficiency Class: A+ (Cold climate) / A (Temperate climate) / E (Warm climate). Specific Energy Consumption (SEC): -40 kWh/(m²·year) for temperate climates. Quiet Operation and Acoustic Comfort: Engineered aerodynamics and sound insulation keep noise down to 22 dB(A) at minimum speed (virtually imperceptible to the human ear). At nominal design airflow, noise level remains low at 35 dB(A), making it suitable for classrooms, offices, and bedrooms. Multi-Stage Air Filtration and Monitoring: Supply Air: Dual-stage filtration. Primary filtration via a Coarse 80% (G3) filter traps larger dust and debris, followed by a high-efficiency ePM1 80% (F9) filter that captures up to 80% of fine particulate matter (including pollen, allergens, soot, and PM2.5/PM1 micro-dust). Extract Air: Coarse 80% (G3) filter protects internal components and the heat exchanger from indoor dust. Smart Monitoring: A built-in differential pressure sensor continuously monitors filter clogging and alerts you when maintenance or replacement is required. Full Technical Specifications and Features (STD Version) Parameter / Feature Value / Details Dimensions (W x H x D) 1434 x 222 x 602 mm Net Weight 44 kg Wall Penetrations 2x Ø200 mm holes Power Consumption per Speed 1 energy / 2 / 3 / 4 / Boost: 16 / 21 / 30 / 49 / 73 / 120 W Specific Fan Power (SPI) 0.2 / 0.16 / 0.17 / 0.2 / 0.23 / 0.3 W/(m³/h) Power Supply Parameters Mains: 230 V AC / Internal operating voltage: 24 V DC (max 0.6 A) Free-Cooling / Free-Heating Automatic electronic bypass included Special Modes Night Mode, Hyperventilation (Boost) Control Interface Removable wired STD control panel (included), IR remote compatible BMS / Smart Home Integration Integrated RS485 serial port (Modbus RTU protocol) Product Code (STD) 1VMC04030 CLICK FOR MORE DETAIL – CATALOGUE CLICK FOR MORE DETAIL – TECHNICAL DATA SHEET Heat recovery ventilation cost You can install HELTY yourself or use our installation service.