Smoke And Heat Exhaust Ventilation System From Gretsch-Unitas

Home » Smoke And Heat Exhaust Ventilation System From Gretsch-Unitas

WFM Media Editor’s

Admin

WFM Media

Post Date: September 5, 2025 | Last Edited: September 5, 2025

Fires and the associated flames and smoke still pose the greatest threat to people and buildings. For this reason, it is extremely important that the smoke be extracted quickly and reliably. The Gretsch-Unitas Group offers a wide range of coordinated system components – from electric motor drives to RWA central control units, plus an extensive range of accessories. Here is a summarized overview of the additional information regarding projects, planning, installation and maintenance of smoke and heat exhaust ventilation systems – all of which, of course, correspond to the current state-of-the-art and take into account the applicable standards and directives.

With their compact design and pleasant appearance, chain drives from the Gretsch-Unitas Group are an ideal solution for the fast, electromotor-driven opening of exhaust air apertures and for room ventilation.

The drives are surface-mounted and perfectly suited to any window type and style, thanks to their flat design. Depending on the window profile, the drives can also be installed in a concealed manner.

Add Table:

Chain Drive WMF 200 – Technical Data

Touch Panel RCM22

Technical Data

ST central processor and the professional touch control chip.
Safety power supply design, 2 minutes delay, power off.
Receiver with acousto-optic prompt function.

Panel Size: 86mm*86mm
Inside housing: 70mm*67mm*31mm
lnput output voltage: AC220V I DC24V
Power: 50W@24V(Resistive load)
Receiving Frequency: 433.92Mhz
Channel number: 8UNITS
Receiving Sensitivity: -11 ODBm

Control Box RZ25A

Product features:

Compact, robust steel housing.
Regulated output voltage.
Connection of up to 5 central control units, with real cable monitoring.
Up to five physically separate ventilation groups.
Central ventilation push-button function for the connected central control units.
Convenient and clear signalling of status, errors and faults via LED indicators.
Wide range of adjustment and application functions:
Automatic ventilation <CLOSE>: with programmable time selection.
Dead man’s switch function in <OPEN> and <CLOSE> direction.
Runtime limitation for ventilation, adjustable.
Integrated, acoustic alarm signalling device with switch-off function.
Automatic closing of windows in case of power failure.
Selection of the drive running direction in the event of an alarm.
Relay outputs for alarm and faults.

When it comes to heavy window elements with large sash areas and large sash heights in particular, the drive alone is often not enough to keep the window closed.

Locking drives from the Gretsch-Unitas Group offer the ideal solution for the electromotor-driven locking and unlocking of windows, whether they be Tilt-Only, Top-Hung, lowering Top-Hung, Parallel, Projecting or Turn-Only. The locking mechanism functions either through interior central locking (e.g. UNI-JET) or a surface-mounted locking element. The additional locking points increase the tightness of the seal as well as the burglar protection. The locking drives can be used in combination with a chain drive or an RWA opening system. Depending on the profile system (for virtually all standard profiles) and installation situation, drives can be installed on the window or integrated in the window profile for a more sophisticated finish.