Flexit ProNordic L190R is a high-capacity commercial air handling unit from the Norwegian ProNordic range — designed for larger office buildings, schools, retail centres, fitness facilities and apartment complexes. With a maximum airflow of up to 2 650 m³/h (at 200 Pa, 80 %/SFP 2) and a circular side duct connection of Ø400 mm, it delivers high performance while retaining the installation flexibility characteristic of the L-series. Powered by high-efficiency EC fans (2×750 W) and a rotary heat exchanger, the unit keeps running costs low even under Nordic climatic conditions. The Siemens Climatix CS2500 control system with Modbus communication ensures straightforward integration into building management systems (BMS). Supplied as a right-hand variant with 400 V configuration, easily convertible to left-hand and 230 V directly on site — making it impossible to order the wrong variant.
Key Benefits
Performance Parameters
Flexit ProNordic L190R delivers an airflow of up to 2 650 m³/h at 200 Pa (80 %/SFP 2.0). At a lower setting (85 %/SFP 1.5), it achieves 1 800 m³/h with higher heat recovery efficiency. The circular side duct connection Ø400 mm allows optimal duct routing even in space-constrained installations.
@ 200 Pa (80 %/SFP 2.0)
@ 200 Pa (85 %/SFP 1.5)
(circular, side-mounted)
(B-wheel radial)
Siemens Climatix CS2500 control system
Integrated control system with constant airflow or 3-speed regulation. Modbus TCP/IP or RTU communication for connection to building management systems (BMS). ProPanel (push-button) or ProTouch (touch-screen Android) control panel available as accessories. Time schedules and filter alarm based on pressure differential. Optional BACnet IP module for extended BMS integration.
Flexible design — impossible to order wrong
Supplied as a right-hand variant with 3N~400 V configuration. Conversion to left-hand and 230 V is done directly on site. The heating coil (electric 6 600 W or water-based) is installed on site. This flexibility eliminates the risk of ordering the wrong variant and saves costs when project changes occur. The unit is kept on stock at Flexit.
Commercial buildings — offices, schools, retail
With an airflow of up to 2 650 m³/h, ProNordic L190R is ideal for collective ventilation of large apartment buildings, school facilities, retail spaces, fitness centres and mid-size to large office buildings. The side connection Ø400 mm opens installation possibilities even where top duct connection is not feasible.
Robust construction — Nordic Swan Ecolabel
Double-walled panels with thermal insulation and no thermal bridges ensure excellent thermal efficiency. High-quality bag filter ePM1 55 % (F7) filtration on both supply and extract air captures fine dust and pollen. Listed in the building product database for Nordic Swan Ecolabelled buildings.
Easy installation and servicing
ProNordic L190R is designed with a focus on efficient installation and maintenance. All air connections are located on the side of the unit (circular connection Ø400 mm), enabling optimal duct connection even in rooms with limited ceiling height or overhead obstructions.
The unit can be disassembled into individual modules — rotor module (57 kg), fans (2×12 kg) and doors (4×12 kg) — reducing the net weight for inward transport to 128 kg. The unit fits through a 90 cm doorway.
Automatic bypass provides free cooling during transitional periods. Filter alarm based on pressure differential alerts when filter replacement is needed.
ProNordic L190R is installed indoors — in a technical room or AHU plant room. The unit must be placed in a dry location protected from the weather. Operating temperature: −30 °C to +40 °C.
ProPanel and ProTouch — two control options
ProPanel is a standard push-button control panel for basic operation and unit status overview. Suitable where simple control without advanced settings is sufficient.
ProTouch is a Siemens touch-screen panel (Android) with an application for local connection to the unit. It offers extended settings, visualisation of operating parameters and alarm history. Both panels are supplied separately as accessories.
Technical Specifications
| Parameter | Value |
|---|---|
| Max. airflow (80 %/SFP 2.0) | 2 650 m³/h @ 200 Pa |
| Airflow (85 %/SFP 1.5) | 1 800 m³/h @ 200 Pa |
| Heat exchanger type | Rotary (regenerative) |
| Fan type | B-wheel radial with EC motors |
| Fan power | 2×750 W (230 V) |
| Rotor motor power | 40 W |
| Max. fan speed | 3 000 rpm |
| Electric heating coil (optional) | 6 600 W |
| Water heating coil | Optional (on-site installation) |
| Rated voltage | 3N~400 V / 50 Hz (convertible to 230 V) |
| Total power (electric coil, 400 V) | 8 310 W |
| Total power (water coil, 400 V) | 1 710 W |
| Rated current (electric coil, 400 V) | 13.7 A |
| Fuse rating (electric coil, 400 V) | 3×20 A |
| Duct connection | Ø400 mm (circular, side-mounted) |
| Filters | Bag filter ePM1 55 % (F7), 895×400×300 mm |
| Control system | Siemens Climatix CS2500 |
| Communication | Modbus TCP/IP or RTU |
| Fan regulation | ModBus (constant airflow / 3 speeds) |
| Dimensions (W×H×D) | 1 630×1 210×1 010 mm |
| Depth without doors | 895 mm |
| Gross weight | 257 kg |
| Net inward transport weight | 128 kg (fits through 90 cm door) |
| Rotor module weight | 57 kg |
| Fan weight | 2×12 kg |
| Door weight | 4×12 kg |
| Configuration | Right-hand (convertible to left-hand on site) |
| Installation | Floor-mounted, indoor (technical room) |
| Operating temperature | −30 °C to +40 °C |
| Control panels | ProPanel (push-button) / ProTouch (touch-screen, Siemens Android) |
| Certifications | Nordic Swan Ecolabel eligible |
| Product no. | 152000 |
| GTIN | 7023671520007 |
ProNordic L190R vs L150R vs S220R — which model to choose?
ProNordic L190R — max. 2 650 m³/h at 200 Pa. Side circular connection Ø400 mm — ideal for installations where top duct connection is not possible. Dimensions 1 630×1 210×1 010 mm, weight 257 kg (net 128 kg), fits through a 90 cm door. Higher-output EC fans 2×750 W. Best suited for larger spaces with side-routed ductwork.
ProNordic L150R — max. 1 850 m³/h at 200 Pa. Side circular connection Ø315 mm — more compact version (1 230×1 130×910 mm, 191 kg). Suitable for smaller spaces and installations with limited plant room footprint.
ProNordic S220R — max. 2 400 m³/h at 200 Pa. Top rectangular connection — standard solution for HVAC systems with overhead duct runs. Recommended for typical installations where top duct connection is preferred.
For even higher capacity, consider ProNordic S260R (up to 3 900 m³/h). For residential use (family homes and apartments), we recommend the Flexit Nordic range — models Nordic S4 (461 m³/h) or Nordic L6 SW (657 m³/h).
High-capacity commercial ventilation. Side connection. Professional control.
Flexit ProNordic L190R is an energy-efficient air handling unit with a rotary heat exchanger, airflow of up to 2 650 m³/h, circular side connection Ø400 mm and Siemens Climatix CS2500 control — powerful, flexible and in stock.