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BAK-240
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Technical Documentation "Installation, Mounting and Operating Instructions" BAK-240 Fire protection unit USABILITY CERTIFICATE • General building supervisory approval (abZ) Z-41.3-574 Classification K30-U Test specifications - DIN 4102-2 - DIN 4102-6 PERFORMANCE DATA • SPECIAL FEATURES • SCHAKO | Ferdinand Schad KG Steigstraße 25-27 D-78600 Kolbingen For installation into fire-resistant suspended ceilings (F30-A) The fire protection unit is fitted with two thermal trigger devices (72°C; located on the inside and outside). In case of fire, the triggering and the closing motion of the shut-off damper happen independently of whether the temperature occurs first inside the ventilation ducts or outside. Fastening of the air diffuser to the suspended ceiling or fire protection unit with screw mounting (-SM).

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Fire protection unit BAK-240 Technical documentation Table of Contents Construction subject to change No return possible

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Fire protection unit BAK-240 Technical documentation Description VENTILATION FITTINGS Openings for ventilation ducts in fire-resistant suspended ceilings must be sealed against fire and smoke by means of shutoff devices. The shut-off device type BAK-240 (hereafter referred to as fire protection unit type BAK-240), of resistance class K30-U, according to general building approval (abZ) No. Z-41.3-574 is suitable for installation in fire-resistant suspended ceilings. This ceiling must be designed as panelled ceiling in screw-type and spatulated design and must meet the requirements of an...

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Fire protection unit BAK-240 Technical documentation Description CONNECTION OF VENTILATION DUCTS The fire protection unit type BAK-240 must only be connected to non-flammable ventilation ducts. The local regulations or national standards on ventilation systems (in Germany e.g. M-LüAR, in the locally applicable version) apply. No inadmissible forces may affect the fire protection unit and suspended ceiling especially in case of fire and impair their fire resistance time. The required expansion joints (flexible spigots) must be designed as flammable, elastic spigots made of at least standard...

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Fire protection unit BAK-240 Technical documentation Models and dimensions MODELS AND DIMENSIONS 1 Housing 2 Shut-off damper 3 Trigger device 4 Fusible link inside 5 Fusible link outside 6 Trigger clip 7 Catch spring 8 Limit switch (optional) 9 Protective cover 10 Shut-off steel sheet Available sizes Nominal size * It is also possible to select a smaller spigot diameter 0D 1 External dimensions Table 1: Available sizes Construction subject to change No return possible Version: 2019-12-01 | Page 5

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Fire protection unit BAK-240 Technical documentation Installation details Release device As standard, the fire protection unit is supplied with an inside and outside thermal trigger device (fusible link with 72°C trigger temperature)! Thus, in case of fire, the triggering and closing motion of the shut-off damper happen independently of whether the temperature > 72°C occurs first on the inside or outside of the duct system. The breakage of one of the fusible links closes the shut-off damper and locks it into place. The fusible link must be replaced before the shut-off damper can be locked...

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Fire protection unit BAK-240 Technical documentation Accessories Mounting Screw mounting (-SM), countersunk screws (4, on site). The only possible fastening type is screw mounting. ACCESSORIES Available at an extra charge  Limit switch type ES-1A (-ESA) Electric limit switch for position indication. Switching element including one NC and one NO contact each, 4 connections for M3,5 screw terminals for max. 2 mm². 250 V AC, Ie 6A, IP67 using suitable cable glands M20 (on-site). Air throw pattern “A“ : All blades in position 2 “B“ : Blades in position 1+2, preset ex works “C“ : Without blades...

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Fire protection unit BAK-240 Technical documentation Order code ORDER CODEBAK-240 ORDER CODE 01 EXAMPLE BAK240-44-400-158-72-HAN-ESA Type BAK240 = fire protection unit BAK-240 | Air diffuser 44 = BDQJ | Nominal size = 400 mm | Spigot diameter = 158 mm | Trigger temperature 72 = 72°C | Actuator type HAN = thermo-mechanical triggering | Accessory ESA = ES-1A (limit switch in OPEN position) ORDER DETAILS 01 - TYPE HAN = thermo-mechanical triggering 07 - ACCESSORIES Z00 = without accessories ESA = ES-1A (limit switch OPEN) Construction subject to change No return possible

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Fire protection unit BAK-240 Technical documentation Order code BDQJ ORDER CODE 01 EXAMPLE BDQJ-Q-SR-Z-500-SB-9010-000-PT-L9010-A-SM-A0 Type BDQJ = ceiling swirl diffuser for fire protection unit| Q = version with square faceplate | SR = circular blade pattern | Z = air throw supply air | Nominal size = 500 mm | SB = faceplate made of sheet steel | 9010 = face plate painted to RAL9010 | Drill pattern 000 = not reduced | Blades PT = divided blades | Blade colour L9010 = plastic similar to RAL 9010 white | Air throw pattern A = all blades in position 2 | Mounting SM = screw mounting | Cover...

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Fire protection unit BAK-240 Technical documentation Specification texts Fire protection unit of resistance class K30-U, according to general building supervisory approval Z-41.3-574, suitable for installation in fire-resistant suspended ceilings designed as panelled ceilings in screw-type and spatulated design that meet the requirements of an independent component of being fire-resistant for 30 minutes in the event of a fire from top or bottom. With metal-cased shut-off damper and visible screw mounting of the air diffuser. The shut-off damper is triggered by an inside and outside thermal...

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Fire protection unit BAK-240 Technical documentation Service SERVICE Checking the function, cleaning, repair 2 Thermo-mechanical trigger device Polluted and damp air can impair the continuous operational safety. This is why, after commissioning the ventilation installation, all shut-off devices must be subjected to a functional test at a six-month interval, according to section 3.3 of the general building supervisory approval Z-41.3-574. If two consecutive functional tests show no defects, the shut-off devices only have to be tested at a yearly interval. If maintenance agreements are made...

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