Smoke leakage (S): Failure of the criterion shall have happened If your movement rate in duct A over the exam exceeds 10 m³ / (m² h), associated with 20 °C and 1013 mbar, related to the internal surface area of the duct Within the furnace. Oxygen: Oxygen in the air https://claytontkaoc.dailyhitblog.com/41994036/5-easy-facts-about-ductworth-installation-described