Technische fiche - Delta-Temp

BT08L005GB-01PACKAGED362 - 904AIR FILTERINGThis is an essential function for proper maintenance of conditions of well-being and hygiene in the served rooms.For this reason it is the subject of precise standards based on the specific applications. The units are standardequipped with filters with an efficiency of G4 on the treatment section. They have an ample surface and lowpressure drops. The second filtering stage is available through innovative, high-efficiency filters, electro-static,automatically controlled, class H10. Thanks to the minimum pressure drops and the possibility to wash them, theysubstantially reduce consumption and hence ventilation costs, while at the same time ensuring excellentperformance. As an alternative the more traditional high-efficiency F7 rigid pocket filters are available.F7 - HIGH EFFICIENCY F7 AIR FILTERThe multi-dihedral filters with rigid pockets, class F7, are filtering components thatare in addition to the standard G4 filters, for more effective filtering. They arewidely used in civil air conditioning systems and in industrial applications thatrequire suitable performance concerning fine dusts and particles with dimensionsgreater than µm. Class F7 filters are made of fibreglass paper, pleated withconstant calibrated spacing, mounted on frames with a sturdy structure in extrudedmoulded polyester; the ample filtering surface reduces air side pressure drops.Class F7 filters must be replaced after reaching their limits of dirtiness withscheduled periodic maintenance. It is possible to provide as an accessory the dirtyfilters differential switch, which informs the user that the admissible limit of dirtinesshas been reached so as not to excessively reduce the air flow rate with respect tothe nominal value.This option reduces the available static pressure (air side).FES - AIR FILTER, ELECTRO-STATIC, HIGH-EFFICIENCY, H10Class H10 high-efficiency filters are additional filtering components with an activeelectrostatic system. Solid or liquid particles contained in the air flow are trapped byand electrical field. The air flow through the filter is affected in two main phases:release of an electrical charge to the particles (ionization), and capture of theparticles by electrostatic deposit (captivation). On a periodic basis, the filters mustbe washed to remove the captured particles.The filters are capable of trapping fine dusts, some types of viruses and microorganisms(anti-bacterial action) with very modest pressure drops. The range ofuse normally includes fine powders that measure less than 1 µm. Typical pollutantsare cigarette smoke (0.5÷0.3 µm), oily vapours (1÷0.2 µm), PM10 (particles < 10µm), PM2.5 (particles < 2.5µm), PM1 (particles < 1µm), etc.Dirtiness of the electric filter is signalled by a sensor that makes it possible toschedule periodic maintenance, which can be easily performed by washing in waterwith a special non-aggressive detergent for aluminium. The greater initial cost, as compared to a traditional pocketfilter, is recovered quickly since the electrostatic filters last for the entire life of the machine, whereas pocket filtersrequire periodic replacement.FLOW OF CONTAMINATED AIRIONIZATIONCAPTIVATIONThis option reduces the available static pressure (air side).38hot water coil and electric heaters cannot be mounted at the same time