KA-EU

Application

• Fire dampers of Type KA-EU for shutting off extract air and exhaust air ducts of commercial kitchens, with general building inspectorate licence
• To prevent the propagation of fire and smoke through ductwork to adjacent designated fire compartments

Special characteristics

• General building inspectorate licence Z-41.3-692
• Tested for fire resistance properties to DIN 4104-6 and EN 1366-2
• 100% free area
• Low differential pressure and sound power level
• Integration into the central BMS with TROXNETCOM

Classification

• Fire resistance class K90to DIN 4102-6

Nominal sizes

• 250 × 225 to 1200 × 500 mm
• L: 595 – 880 mm (depending on the selected casing height)

Variants

• With thermal release mechanism
• With thermal release mechanism and control module
• With electric blade opening actuator and control module

Parts and characteristics

• Installation in horizontal or vertical ducts
• Installation in horizontal ducts with the damper blade at the top and airflow in any direction
• 100% free area, hence low differential pressure
• Secure closure by means of gas struts even when there are deposits
• Release temperature 72 °C

Attachments

• Capillary tube sensor

Construction features

• Rigid rectangular casing with installation subframe
• Connecting flanges with fixing holes on both sides, suitable for duct connection
• Scrapers on the damper blade to scrape off greasy deposits etc.
• Damper blade outside of the airflow
• Remote control with electric blade opening actuator

Materials and surfaces

Casing:

• Galvanised sheet steel
• Stainless steel 1.4301

Damper blade:

• Special insulation material faced with stainless steel

Other components:

• Damper blade shafts made of galvanised steel or stainless steel

Standards and guidelines

• EN 1366-2:1999 Fire resistance tests for service installations – Fire dampers
• DIN 4102-6, standard fire resistance test
• EN 1751 Ventilation for buildings – Air terminal devices
• VDI 2052 Ventilation equipment for kitchens

Maintenance

• The functional reliability of the fire damper must be tested at least every six months; this has to be arranged by the owner of the ventilation system; functional tests must be carried out in compliance with the basic maintenance principles stated in EN 13306 and DIN 31051. If two consecutive tests, one 6 months after the other, are successful, the next test can be conducted one year later.
• A functional test involves closing the damper blade and opening it again; with electric blade opening actuator this can be done via remote control
• Fire dampers must be included in the regular cleaning schedule of the ventilation system.
• For details on maintenance and inspection refer to the installation and operating manual