Circular fire dampers with a fire resistance of 120 minutes. When the temperature of the thermo-electric fuse in the damper rises above 72 °C the damper will close. When closed, the expanding material around the fireblade will assure a fire and air-tight seal against hot air and smoke. The tunnel is made out of galvanized steel. The CR120 + BFLT24 fire dampers have a automatic operating mechanism with actuator, with indication of the blade position. An end and begin of range switch is included within the actuator.
Explanation
CR120 = Round fire damper with fire resistance of 120 minutes
BFLT24 = Actuator 24V with thermo-electrical fuse
160 = Connection diameter
Quick selection
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100 | Q | 85 | 113 | 141 | 170 | 198 | 226 | Vk | 5 | 6.7 | 8.3 | 10 | 11.7 | 13.4 | Ps | 5 | 8 | 13 | 19 | 26 | 33 | Lw(A) | 41 | 45 | 47 | 50 | 52 | 54 | 125 | Q | 132 | 177 | 221 | 265 | 309 | 353 | Vk | 4.5 | 6 | 7.5 | 9 | 10.5 | 12 | Ps | 4 | 7 | 11 | 16 | 21 | 28 | Lw(A) | 38 | 43 | 46 | 48 | 51 | 52 | 160 | Q | 217 | 289 | 362 | 434 | 506 | 579 | Vk | 4 | 5.4 | 6.7 | 8.1 | 9.4 | 10.8 | Ps | 3 | 5 | 8 | 12 | 16 | 22 | Lw(A) | 37 | 41 | 44 | 46 | 49 | 51 | 200 | Q | 339 | 452 | 565 | 678 | 791 | 904 | Vk | 3.8 | 5.1 | 6.3 | 7.6 | 8.9 | 10.1 | Ps | 2 | 4 | 6 | 9 | 12 | 16 | Lw(A) | 37 | 41 | 43 | 46 | 48 | 50 | 250 | Q | 530 | 707 | 883 | 1060 | 1236 | 1413 | Vk | 3.6 | 4.8 | 6 | 7.2 | 8.4 | 9.6 | Ps | 2 | 3 | 4 | 6 | 9 | 11 | Lw(A) | 36 | 40 | 43 | 45 | 47 | 49 | 315 | Q | 841 | 1122 | 1402 | 1682 | 1963 | 2243 | Vk | 3.5 | 4.6 | 5.8 | 7 | 8.1 | 9.3 | Ps | 1 | 2 | 3 | 4 | 5 | 7 | Lw(A) | 35 | 39 | 43 | 44 | 46 | 47 |
Symbols and specifications
- v = Air velocity in the duct in m/s
- Q = Air volume in m³/h
- Vk = Effective velocity through the damper in m/s
- Ps = Static pressure in Pa
- Lw(A) = Acoustic power in dB(A)
- Dia = Duct diameter in mm
Dimensions
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100 | 100 | 99 | 126.5 | 0.0047 | 125 | 125 | 124 | 139 | 0.0082 | 160 | 160 | 159 | 156.5 | 0.0149 | 200 | 200 | 199 | 176.5 | 0.0248 | 250 | 250 | 249 | 201.5 | 0.0407 | 315 | 315 | 314 | 234 | 0.0672 |
Electrical connection
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