Flexit ProNordic S180R is a commercial air handling unit from the Norwegian ProNordic range — designed for schools, offices, retail spaces, fitness centres, clinics and apartment buildings. With a maximum airflow of up to 1 800 m³/h (at 200 Pa) and a rectangular 500×250 mm duct connection, it covers ventilation for medium-sized commercial spaces. The unit is energy-efficient and quiet thanks to EC fans with radial B-wheels (2×500 W). The Siemens Climatix CS2500 control system with Modbus TCP/IP or RTU communication ensures easy 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.
Key Benefits
Performance Parameters
Flexit ProNordic S180R delivers an airflow of up to 1 800 m³/h at 200 Pa (SFP 2). At a lower setting (SFP 1.5), it achieves 1 060 m³/h with higher heat recovery efficiency (85 %). The rectangular 500×250 mm duct connection on top of the unit minimises pressure losses and simplifies ductwork routing.
@ 200 Pa (SFP 2)
(rectangular, top-mounted)
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 display, Android) control panel available as an accessory. Time programmes (max. 4/day) and filter alarm based on pressure differential.
Flexible design — impossible to order wrong
Supplied as a right-hand variant with 400 V configuration. Conversion to left-hand and 230 V is done directly on site via DIP switch. The heating coil (electric 4 800 W or water) is installed on site. This flexibility eliminates the risk of ordering the wrong variant and saves costs when project changes occur.
Commercial buildings — offices, schools, retail
With an airflow of up to 1 800 m³/h, the ProNordic S180R is ideal for collective ventilation of apartment buildings, school facilities, retail spaces, fitness centres and medium-sized office buildings. A single unit ensures quality air for the entire building.
Robust construction for technical rooms
Double-walled panels with a thickness of 50 mm without thermal bridges ensure excellent thermal insulation. Thoughtful component placement facilitates installation and servicing. High-quality ePM1 55 % (F7) filtration on both supply and extract air captures fine dust and pollen.
Easy installation and servicing
ProNordic S180R is designed with a focus on efficient installation and maintenance. All air connections are located on the top of the unit (rectangular 500×250 mm connection), which simplifies ductwork routing.
The unit can be disassembled into individual modules — rotor module (44 kg), fans (2×11 kg) and doors (4×14 kg) — reducing the net weight for transport to 143 kg. Compact dimensions allow the unit to be carried through an 80 cm doorway.
Automatic bypass provides free cooling during transitional periods. Filter alarm based on pressure differential alerts when filter replacement is needed.
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) | 1 800 m³/h @ 200 Pa |
| Airflow (85 % / SFP 1.5) | 1 060 m³/h @ 200 Pa |
| Heat exchanger type | Rotary (regenerative) |
| Fan type | B-wheel radial with EC motors |
| Fan power | 2×500 W (230 V) |
| Rotor motor power | 40 W |
| Max. fan speed | 2 700 rpm |
| Electric heating coil (optional) | 4 800 W |
| Water heating coil | Optional (on-site installation) |
| Rated voltage | 230 V or 400 V / 50 Hz |
| Total power (with electric coil) | 6 010 W |
| Total power (with water coil) | 1 210 W |
| Duct connection | 500×250 mm (rectangular, top-mounted) |
| Filters | Compact ePM1 55 % (F7), 792×287×360 mm |
| Control system | Siemens Climatix CS2500 |
| Communication | Modbus TCP/IP or RTU |
| Fan regulation | ModBus (constant airflow / 3 speeds) |
| Dimensions (W×H×D) | 1 630×1 320×1 030 mm |
| Depth without doors | 795 mm |
| Gross weight | 265 kg |
| Net weight (transport) | 143 kg (fits through 80 cm door) |
| Rotor module weight | 44 kg |
| Fan weight | 2×11 kg |
| Door weight | 4×14 kg |
| Configuration | Right-hand (convertible to left-hand via DIP switch) |
| Installation | Floor-mounted, indoor installation |
| Control panels | ProPanel (push-button) / ProTouch (touch-screen, Siemens Android) |
| Certifications | ERP 2018 (EU 1253/2014), Nordic Swan Ecolabel eligible |
| Product no. | 171500 |
| GTIN | 7023671715007 |
Electrical Variants
| Parameter | Electric coil 230 V | Electric coil 400 V | Water coil 230 V | Water coil 400 V |
|---|---|---|---|---|
| Total power | 6 010 W | 6 010 W | 1 210 W | 1 210 W |
| Electric coil power | 4 800 W | 4 800 W | — | — |
| Rated current | 17.3 A | 10.0 A | 5.3 A | 3.1 A |
| Fuse rating | 3×25 A | 3×16 A | 3×10 A | 3×10 A |
ProNordic S180R vs S220R — model comparison
ProNordic S180R — max. 1 800 m³/h (500 l/s) at 200 Pa. A mid-range ProNordic model suitable for apartment buildings, multi-classroom schools, offices and retail spaces. Dimensions 1 630×1 320×1 030 mm, weight 265 kg. Duct connection 500×250 mm (rectangular, top-mounted). Fans 2×500 W, optional electric heater 4 800 W.
ProNordic S220R — max. 2 400 m³/h (667 l/s) at 200 Pa. Higher capacity for larger buildings — large schools, open-plan offices, shopping centres and fitness centres. Dimensions 1 630×1 420×1 130 mm, weight 280 kg. Same 500×250 mm duct connection. More powerful fans 2×750 W, optional electric heater 6 600 W. Both models fit through an 80 cm door and share the same Siemens Climatix CS2500 automation, ePM1 55 % (F7) filters and flexibility principle (right/left-hand, 400 V/230 V).
For smaller spaces, consider ProNordic S140R (up to 1 555 m³/h). For residential use (family homes), we recommend the Flexit Nordic range — models Nordic S4 (461 m³/h) or Nordic L6 SW (657 m³/h).
Reliable commercial ventilation. Mid-range performance. Professional control.
Flexit ProNordic S180R is an energy-efficient air handling unit with a rotary heat exchanger, airflow of up to 1 800 m³/h and Siemens Climatix CS2500 control — flexible, reliable and in stock.