The swing-door drive DTN 80 has a patented double-spring system which ensures a high closing force before the closing position. This ensures that even under difficult constructional conditions the door closes securely, quietly and completely.
Under these kind of difficult constructional conditions – such as draughts, wind, positive pressure in double door systems, or the need to overcome the mechanical resistance of gaskets or multi-point locks – it cannot be ensured that doors will close reliably. This challenge is particularly noticeable just before the door engages in the lock. This is when the force of the closing spring, which is applied throughout the entire closing operation, is at its weakest.
GU has therefore installed two spring assemblies in the DTN 80 swing-door drive, instead of just one. The second acts, controlled by a cam disc, just before the door reaches the closing position – in other words, exactly at the point where a higher closing force is required.
The swing-door drive DTN 80 can be installed in single-leaf and double-leaf swing doors. Large passage widths up to 3200 mm can be implemented in this case. DTN 80 is suitable for all frame materials and can also be retrofitted to existing elements. It can be supplied in various surfaces. Automation of existing swing doors is possible at any time by retrofitting the DTN 80.
The DTN 80 ensures convenient passage through doors and can be used on all certified swing doors up to resistance class RC4. It can also securely close wide fire and smoke protection doors up to a closing force size of EN 7.
Wind tightness and tightness against driving rain
When used in combination with the DTN 80 swing-door drive, certified swing doors satisfy the performance characteristics described in EN 14351-1 and therefore provide a tight seal.
Fire protection and accessibility
The DTN 80 swing-door drive is the perfect solution for barrier freedom at fire protection doors, such as those found in hospitals and residential homes System solutions for escape and rescue routes.
The DTN 80 swing-door drive satisfies the requirements of the EN 179 and EN 1125 standards in combination with the tested and approved units consisting of panic lock and door hardware from GU group.