Dry roof - Waterproof roof
BIZONE XPJ350B and XPJ650B CO2 pneumatic smoke extraction controls (D.C.M.*, D.A.C.* or D.C.M.R.*) are designed to issue an opening or closing order by percussion of single-use A.P.S. (CO2 cartridges) to Natural Smoke and Heat Exhaust Ventilators (NSHEV). They enable 2 smoke extraction zones to be opened simultaneously with a single push-button control. The BIFONCTION model has an open-close ventilation control. The smoke extraction function always takes priority over the ventilation function. The standard ranges are fitted with a deformable membrane and are accessible at level 0 (§4.1 of NF S 61-931). It is possible, on request, to adapt the standard enclosures with, for example, vandal-proof doors for level 1 access (§4.2 of NF S 61-931), or cabinets (D.C.M.R.*) with a number of strikers to be determined.