Fire damper lindab | fire dampers WHS25 Dimensions Lp 270 Lp a 116 Ød 1 + 150 Ød 1 + 90 Ød 1 cb s Description Circular fire damper for air duct system that penetrate fire resistance walls or floors. With 25 mm thick closing blade made from refractory material. Casing leakage performance class C according to Standard EN1751:2014 section C.3. The damper prevents fire and smoke from spreading through the air duct system. Tested and classified in accordance with EN 1366-2 and EN 13501-3 with 500 Pa negative pressure and CE marked in accordance with EN 15650. Product code Type Series WHS Circular fire damper 25 Blade thickness 25 mm Connection U Safe gasket Manual command Command B type C M Manual basic Manual compact Manual command with magnet Position S0 indication microswithces S2 M0 Magnet MR MI Motorized Without position microswitches With two position microswitches (included for MR/MI versions) Without magnet (only for com- mand type “B” and “C” With power supply interruption magnet through eletric board 24 V DC or 48 V DC With power supply input magnet through eletric board 24 V DC or 48 V DC VSS Siemens motor GRA 126 (24V) DSS Siemens motor GRA 326 (230V) Motor type VSB Belimo motor BFL24T (24V) DSB Belimo motor BFL230T (230V) TSB Belimo motor BFL24T-ST (24V) Dimension XYZ Nominal diameter (mm) Ød WHS25 WHS25U m 1 nom s Lp s Lp kg mm mm mm mm 100 - 35 - 38 6,6 125 - 35 - 38 7,2 140 - 35 - 38 7,6 150 - 35 - 38 7,8 160 - 35 - 38 8,2 180 - 35 - 38 8,8 200 - 35 - 38 9,6 224 4 35 1 38 10,7 250 17 35 0 57 12,0 280 32 35 10 57 13,7 300 42 35 20 57 15,0 315 50 35 28 57 16,0 s = blade exposition Mechanism type: WHS25C - Manual compact WHS25B - Manual basic WHS25M - Manual with magnet WHS25VSB/DSB - Belimo motorized version WHS25VSS/DSS - Siemens motorized version Mechanism type a b c mm mm mm WHS25C 63 52 94 WHS25B 100 51 93 WHS25M 102 109 93 WHS25VSB/DSB 85 50 65 WHS25VSS/DSS 97 50 65 Ordering example WHS25 U Type Connection type Dimension Ød 1 Control mechanism 200 S0M0 We reserve the right to make changes without prior notice 2018-03-09 1
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