Ordering example: BKI-K90/SFR1.90T/B=1000xH=1000xH=1000xL=250. Standard damper length; special dimensions are available on request

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1 Ordering example: Damper BKI-K90/SFR1.90T/B=1000xH=1000xH=1000xL=250 Standard damper length; special dimensions are available on request Dimensions B x H (width x height) in mm, side H = operating side Motor type: (see page 52) SFR1.90T = 24 V AC/DC (including thermoelectric release mechanism) SFR2.90T = 230 V AC SFR1.90T SLC (2-wire technique) = 24 V AC (two limit switches inside the motor) Resistance class K90/K30 Fire damper as multi-blade damper Essential advantages The BKI-K90 damper is suitable for the installation into walls of brickwork, concrete, gas concrete and gypsum, into light partition walls and in light partitions, in front of K90 or K30 walls, for which a F90 or F30 fire resistance class is required. In principal including spring-return motor and thermoelectric release mechanism. Two limit switches (for the positions»open«and»closed«) inside the motor. First fire damper as multi-blade damper, especially suitable a flush installation with the wall - standard depth 250 mm. Maximum dimensions: B (width) 1000 mm x H 1000 mm. Standard release beginning at 72 C (on request, also available beginning at 90 C). Any airflow direction Fitting cover grille of galvanized steel (mesh size 20 mm) Housing and blades completely made of calcium silicate Housing resistant to deformation up to a temperature of 400 C Internal impregnation on request also unaffected by changes of temperatures up to 400 C (SR impregnation) A chemical resistance list is available on request. No corrosion Note: Please state special requests, e.g. onesided (operating side BS or other side MS) or two-sided duct connecting profile separately, when ordering. 63

2 Damper Installation into solid walls Dimensions Width B (mm) 200 up to 1000 Clear height H (mm) Number of blades Installation provisions The dampers may also be installed with a vertical axis of rotation into solid walls; this is also applicable to shaft walls and the walls of ventilation ducts. Due to the construction (housing of fireproofing boards), they are also allowed to be arranged directly next to each other. Operating side Operating side The surrounding gap (at least 20 mm) shall be filled with group II or III mortar in accordance with DIN Operation at the bottom Vertical axis Operation at the top 64

3 Please note: Damper If ventilation ducts shall be connected on one or two sides, then flexible spigots of at least standard flammable materials (class B2 and DIN 4102) and at least 10 cm long (when installed) shall be installed between the damper and the ventilation duct of noncombustible materials. Installation into walls with metal framework Section Mineral wool A1, DIN

4 Damper Installation in front of a concrete wall Installation provisions The BKI-K90 may alternatively also be mounted by means of threaded rods in front of solid walls (the statics of the wall shall be considered). Please note: If ventilation ducts shall be connected on one or two sides, then flexible spigots of at least standard flammable materials (class B2 and DIN 4102) and at least 10 cm long (when installed) shall be installed between the damper and the ventilation duct of noncombustible materials. Installation in front of a concrete wall (Number and arrangement of fastening angles) H 340 up to 670 H 340 up to 505 B 200 up to 600 B 700 up to 1000 H 835 up to 1000 H 670 up to 1000 B 200 up to 600 B 700 up to 1000 Hexagon head screw in accordance with DIN 931, M10 x 30 Washer in accordance with DIN 125-A Fastening angle WE Carbowool sealing Fire safety dowel type: KMU-F10 Fastening angle WL 66

5 Please note: Damper If ventilation ducts shall be connected on one or two sides, then flexible spigots of at least standard flammable materials (class B2 and DIN 4102) and at least 10 cm long (when installed) shall be installed between the damper and the ventilation duct of noncombustible materials. Connection with L90 ducts As an overflow opening with one- or two-sided covering Connection with a L90 duct Suspension Duct connecting profile Expansion compensation Extended ducting Detail B Detail A Duct connection With a duct connection on one side Metal mesh grid, mesh size 20 mm 67

6 Tender Text Item Description Unit Unit price Total Piece EUR EUR Fire damper with test certificate Z as multi-blade damper for a K90/K30 fire resistance class and the connection to non-combustible ducts on both sides or with mesh-metal grids. For the installation into solid walls of brickwork according to DIN 1053, concrete walls or light partition walls. Directly in front of or outside of walls. Thermal release via fusible link 72 C. Housing (50 mm thick), blades (40 mm thick) and stops of asbestos-free fireproofing boards, stainless steel blade axes supported in bronze sleeves. Control via spring-return motor (24/230 V or 24 V two-wire technique) Manufacturer: Strulik Type: Dimensions: BKI-K90 B: mm H: mm L: mm Accessories: 68

7 Damper Technical data and weight BKI-K90 Standard design including back wall and covering Weight in kg BKI-K90 (A/V) Special design without back wall and covering, for the direct attachment to walls (A) with angles for fastening type WE or in front of walls in connection with L90 ducts (V). Weight in kg Technical data of the spring-return motor SFR 2.90T (230 V AC) SFR 1.90T (24 V AC/DC) SFR 1.90T SLC (two-wire technique) For installation instructions, maintenance and repair please see our operating manual. See page 52 69

8 Damper Design data Legend B [mm] H [mm] SE [m 2 ] SK [m 2 ] qv [m 3 /h] V E [m/s] Δpt [Pa] Lwa [db (A)] - Width - Height - Smallest cross-section of flow within the fire damper - Duct connecting cross-section - Resistance coefficient (installation of duct) - Volume flow - Air velocity - Total pressure loss - Noise level inside the duct 70

9 Schallleistungspegel db (A) Gesamtdruckverlust pt für Typ BKI-K 90 Querschnittsfläche S E [m 2 ] Luftgeschwindigkeit V E [m/s] Gesamtdruckverlust pt [Pa] 71