Correction of reduced room pressure for chimney-connected heating apparatus

摘要

A heater (9) in room A serves also to heat room C, a bathroom with extractor unit (10) and room B. The fume extractor hood (8) is also situated in room A, as well as the shuttered air inlet vent (7). When the fume extractor hood is energised, a signal is sent to the control unit which registers the condition of the shutter of an air inlet (7). If already open, due to extractor (10) being in use, the fume extractor will operate. If not, it will first be opened.