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BAK-250
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Catalog excerpts

BAK-250 - 1

Technical Documentation "Installation, Mounting and Operating Instructions" BAK-250 Fire protection unit General building supervisory approval Z-41.3-542 SCHAKO | Ferdinand Schad KG Steigstraße 25-27 D-78600 Kolbingen

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BAK-250 - 2

vchAko Fire protection unit BAK-250 Technical documentation Description VENTILATION FITTINGS Exhaust air: DQJA-SR-A DQJA-SQ-A 4-DE-A DQD-L 4-DF Weight of the fire protection unit Exposed ceiling constructions can loose their strength prematurely. To avoid this ceiling constructions are protected with fire resistant suspended ceilings. Openings in the suspended ceiling, for example for air diffusers, are only permitted if they can be closed in case of fire with suitable fire protection equipment, for example with the fire protection unit type BAK-250. Fire protection unit type BAK-250 with...

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BAK-250 - 3

Fire protection unit BAK-250 Technical documentation Description CONNECTION OF VENTILATION DUCTS The fire protection unit type BAK-250 must only be connected to ventilation ducts made of non-flammable materials (Construction class A to DIN 4102). The ventilation ducts used must not exert substantial forces on the fire protection unit or the suspended ceiling in case of fire. The required bellow expansion joints (flexible connection pieces) must be designed as flammable, elastic connection pieces made of at least normally inflammable building materials (EN 13501-1) and must be installed...

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BAK-250 - 4

Fire protection unit BAK-250 Technical documentation Models and dimensions MODELS AND DIMENSIONSDimensions 1 Housing 2 Shut-off damper 3 Snap-in locking device 4 Shut-off damper housing 5 Trigger device 6 Suspension lug 7 Drive (optional) 8 Fusible link cover 9 Available starting from nominal size 500 Nominal size Table 2: Available sizes Trigger device The fire protection unit is supplied as standard with an inside and an outside trigger device (fusible link with 72°C trigger temperature)! Thus, during a fire, the trigger and closing motions of the damper leaf occur independently of...

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BAK-250 - 5

Fire protection unit BAK-250 Technical documentation Installation details INSTALLATION DETAILS Installation The fire protection unit type BAK-250 is connected to the the ceiling with four suspensions. This is followed by mounting the suspended ceiling. Then the air diffuser is connected to the suspended ceiling or to the plenum box using a screw connection (SM mounting). The tension rod dimensions are calculated from the loads of their own weight, of the connected ducts and of the air diffuser. Installation Instructions Inserted ceiling area Fire-resistant ceiling Supply air Exhaust air...

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BAK-250 - 6

Fire protection unit BAK-250 Technical documentation Accessories ACCESSORIES Available at an extra charge   Limit switch type ES 1 A Electric spring return actuator ELD-I-B - BFG24-T-ST SO (24 V AC/DC) - BFG230-T SO (230 V AC) Limit switch type ES 1 A 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). Figure 8: Circuit diagram limit switch type ES 1 A BAK-250 with electric spring return actuator type LD-I-B electric...

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BAK-250 - 7

Fire protection unit BAK-250 Technical documentation Specification texts Fire protection unit with resistance class K 90 U according to the general building supervisory approval Z-41.3-542 suitable for installation in 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 90 minutes in the event of a fire from top or bottom and are classified in fire resistance class F90-A. Metal-cased damper leaf and visible screw connection of the air diffuser. Damper blade is triggered by an...

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BAK-250 - 8

Fire protection unit BAK-250 Technical documentation Maintenance or functional test MAINTENANCE OR FUNCTIONAL TEST 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 5 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 for ventilation installations, it...

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BAK-250 - 9

Fire protection unit BAK-250 Technical documentation Maintenance or functional test 1.2.2 Trigger device with electric spring return actuator ELD-I-B Electric system check Actuate the electric pushbutton (on-site), this interrupts the power supply to the spring return actuator (pos.20); as a result, the shut-off damper must close automatically. Press the on-site electric pushbutton again which restores the power supply to the electric spring return actuator; as a result, the adjusting mechanism moves the shut-off damper to the OPEN position again. The pushbutton (pos.21) is pressed on the...

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BAK-250 - 10

Fire protection unit BAK-250 Technical documentation Maintenance or functional test SAMPLE TEMPLATES SAMPLE OF FUNCTIONAL TEST PROTOCOL SCHAKO Ferdinand Schad KG Steigstrasse 25-27 D-78600 Kolbingen Phone: +49- (0)7463 / 980-0 Fax: +49- (0)7463 / 980-200 E-mail: info@schako.de Web: www.schako.de Sample Functional test protocol for____________________ Cons. No. ____________________ Usability certificate: Series: Release device: The following function steps have been carried out according to the documents Installation, mounting and operating instructions External check: System:...

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BAK-250 - 11

Fire protection unit BAK-250 Technical documentation Maintenance or functional test SCHAKO Ferdinand Schad KG Steigstrasse 25-27 D-78600 Kolbingen Phone: +49- (0)7463 / 980-0 Fax: +49- (0)7463 / 980-200 E-mail: infoschako.de Web: www.schako.de Sample Functional test protocol for____________________ Cons. No. ____________________ Defects found during the test on: Defects found during the test on: Defects found during the test on: Defects found during the test on: Construction subject to change No return possible Version: 2015-08-01 | Document: 09/14 | Page 11

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