Canadian Consulting Engineer


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Finding Smoke in HVAC Ducts
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Exhaust air Outside air Above: typical constant-volume, single-zone HVAC system. Exhaust damper Return air damper Outside air damper Preheat coil Return fan Filter Humidifier Cooling coil Return air duct smoke detector with sampling tube Reheat coil Supply fan Air return from space Supply air duct smoke detector with sampling tube Air supply to space