VENTILATION HEAT EXCHANGER UNITS AND HOUSING FOR VENTILATION SYSTEMS

摘要

A ventilation heat exchanger unit (10) has an outer enclosure and a heat exchanger (48) which may be hexagonal has a face thereof parallel to an outer wall (62, 66) of the enclosure; a ventilation housing (628) has multiple flat inlets (626) and an outlet (634), the inlets and outlet aligned at the same level; and a drive circuit (200, 6100) and calibrating method allow a commissioning step in which air flow is adjusted and fan motor speed set for a run mode.