ACS DAH1 Ducted Air Heaters / Warm Air Units
ACS DAH1 Ducted Air Heaters / Warm Air Units (Gas Safe, UK)
Flues And VentilationEnglish
Exam overviewPractice session
Under BS 5440-1, what is the minimum clearance required between an open-flue terminal of a warm air heater and an openable window or ventilation grille?
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