Brink Renovent HR 250/325 recuperator device with bypass (medium / large) is equipped with cassette air filters with a gasket and an extraction handle. Facilitating the operation of replacing the air filter set. Consisting of removing a set of filters and inserting new ones for the supply and exhaust air from the facility through the mechanical ventilation system. The Brink recuperation units of the Rnovent HR series 250/325 models with a bypass (medium / large) are fitted with G4 coarse filters as standard, allowing for the capture of 70% of coarse particles from the air, i.e. leaves, insects, hair, sand, ash, fine sand, plant spores, pollen and other pollutants larger than 10 μm (micrometers). In order to maintain a higher filtration efficiency of the air supplied to the building, we should install a device with a bypass (medium / large) prepared for fine filtration in the Brink Renovent HR 250/325 recuperator. They stop allergens and smog in the air. Intermediate pollen filters allow to capture 55% of very fine particles from the air drawn into the recuperator, i.e. larger bacteria, accumulated soot, cement dust and other impurities smaller than 10 μm (micrometers). Fine antiallergic filters in the F7 filter class retain 60% of very fine particles, for example larger bacteria, accumulated soot, cement dust and other impurities smaller than 2.5 μm (micrometers). The most effective air filtration for a recuperator allows to obtain F9 class fine filters that retain 80% of very small particles harmful to health. These include tobacco smoke, oil smoke, bacteria on carrier particles and other contaminants smaller than 1 μm (micrometer). As the filtration efficiency of the air filter increases for a given particle size, the resistance and the filling speed increase. Despite the very large filter area. Fine filters should be used to filter the air drawn into the building, and in place of the exhaust air filter we use coarse or intermediate filters. This will reduce air resistance and reduce operating costs. The fine filter can be used in installations equipped with a Brink Renovent HR 250/325 recuperator with a bypass (medium / large). Taking into account the operation of the mechanical ventilation system, the power reserve constituting the excess of the AHU efficiency in relation to the ventilation needs of the building. We replace the air filters every 6 months in some areas the replacement is faster due to the large amount of contamination causing the air filters to fill up earlier in the Brink Renovent HR 250/325 recuperators device with a bypass (medium / large). In the case of using fine filters for filtration of the supply air, a situation may occur in which the exhaust air filter is slightly dirty. In such a situation, we can only replace the supply filter, leaving the present one on the exhaust. However, after such a situation, we should check the level of the exhaust and supply air filters twice as often. In order to eliminate the work of the recuperation system on a full filter. Products made of synthetic filter media and glass microfibers, in accordance with the rules of using air filters, may not be washed (washed) under any circumstances. Cleaning with a vacuum cleaner or by tapping in order to extend the interval between replacing the elements responsible for air filtration in the air handling unit is also not recommended. This reduces the efficiency of the recuperator's operation and lowers the level of comfort of using the mechanical ventilation system. In the initial stage of re-operation of the filters cleaned in such a way, they release some of the contaminants that remained inside the previously collected. Settling on the surface of the heat exchanger, fans and ventilation ducts and then getting into the rooms of the building. Resulting in the need to clean the mechanical ventilation system. Accelerated wear of the elements responsible for the ventilation process and the recovery of heat energy from the air in the recuperator and increasing the amount of electricity consumed through the recuperation unit used. Filters for the Brink Renovent HR 250/325 recuperator unit with a bypass (medium / large) can be made in hard frames made of PVC and galvanized sheet, ensuring high stability of the structure and a recyclable-friendly cardboard.
