Smoke ventilation


System application

Fire and smoke pose a serious threat to human life and health. Contrary to popular belief, over 90% of fire related deaths are caused by smoke suffocation, and not by high temperature or burning. Smoke also causes considerable damage to property. Applying appropriate smoke and heat escape systems can provide considerable help in preventing the dangers caused by high concentrations of smoke and heat. The smoke ventilation window FSP with a motor operated by smoke control unit co-operating with smoke sensor and alarm switch creates a so-called “smoke and heat carrying away gravitational unit”. The system is applied in public buildings (especially in stairways and in blocks of flats, hotels etc.).

System application





Diagram of smoke and heat extraction system in the building

System application

Building without the system during fire


Gravitational System of Smoke and Heat Expelling

The system enables automatic or manual opening of the smoke ventilation window which extracts excessive heat, smoke and toxic gases released during a fire. Above all, it enables the avenues of retreat from the building to be smoke free, thus making evacuation easier. It also helps to localise the source of fire and allows faster fire extinguishing.

The sensor after detecting fire sends a signal to the control unit which, in turn, automatically activates electric motors opening the window. If the fire is noticed prior to the fire reaction sensor, e.g. visually, the smoke ventilation window can be opened manually by means of pressing the fire alarm button RT 45. The system also allows daily room ventilation using the LT 84U ventilation switch. After the programmed ventilation time elapses, the window closes automatically. It is also possible to connect to the system, the ZRD rain sensor, which shuts the window automatically in case of rain. In the event of fire, signals from the sensor do not interfere with window operating.


Gravitational System of Smoke and Heat Expelling

Gravitational System of Smoke and Heat Expelling

Components of the set


Device name

Type of power lead
1.RZN 4402K

Control unit with emergency
power backup for 1 window

przewód zasilający (2 x 1mm²)
1.RZN 4404K

Control unit with emergency
power backup for 2 windows

przewód zasilający (2 x 1,5mm²)

1. RZN 4408K

Control unit with emergency
power backup for 4 windows

przewód zasilający (3 x 2,5mm²)

2. FSP P1

Smoke ventilation window

przewód elektryczny (3 x 1 mm²)

3. RT 45

Alarm buttons przewód elektryczny (5 x 1 mm²)
4. LT 84U Ventilation switch

przewód elektryczny (3 x 1 mm²)

5.OSD 23 Smoke sensor
przewód elektryczny (2 x 1 mm²)
6. ZRD

Rain sensor

przewód elektryczny (2 x 1 mm²)


To install the system, it is necessary to connect 230V AC power supply to the smoke ventilation control unit, and, subsequently, through suitable cables to the remaining system elements. (Cable areas are contained in the table next to element names). The lengths of required cables depend on distribution of individual components of the system. The wiring diagram is presented in the fitting instruction for the smoke ventilation control unit. Fitting the smoke ventilation system should be performed by a qualified electrician only (1kV qualification). The system should be tested for fault-free operation every 6 months.

All elements of the system are certified and their application in buildings is authorised.


  • expulsion of heat and smoke during fire;

  • automatic or manual opening of FSP smoke ventilation window in the event of fire;
    increased safety,

  • building ventilation and automatic window closing after fixed time.