Unit description HRD heat recuperator units for residential and commercial application allow maximum room comfort and energy saving. In modern systems is becoming necessary to create forced ventilation, which involves air conditioned expelling; thereby consuming more energy and consequenting increasing costs. HRD heat recuperators have obviated such as problems using an aluminium static recovery unit that saves more than 50% energy, otherwise be lost with expelled stale air. HRD can be integrated in traditional systems with fan coils, chillers and radiators and may operate both in summer and winter. These units are recommended for suspended ceiling installation and may be suitably ducted to allow the fresh air intake and distribution. Features Removable aluzink plate side panels; Panels insulated and soundproofed with polyethylene/polyester with average thickness of 10 mm (mod. HRD 0021-0051) and 20 mm for the other models; High efficiency aluminium plate static type heat recovery units, with airflow separated by special seals; UE3 efficiency air filters, which may be easily removed from any side of the unit (bottom, side, top) for periodic cleaning; Fan casings on vibration-isolation mountings; Double inlet centrifugal fans for fresh air intake and used air extraction, which may be removed from any side of the unit for periodic maintenance; Multi speed directly coupled electric motor; A terminal block with a relay board is fitted on the unit to aid electrical connections and fan control; Stainless steel condensate collecting tray, with condensate drain directed downwards