If you encounter a down drafting chimney , you should NOT : A) open doors and windows in the home B) ask the homeowner to turn off air conditioners and fans C) seal the face of the opening D) insert the vacuum hose B) ask the homeowner to turn off air conditioners and fans (we think) Utilize some type of protective sleeve around ____ rods to prevent becoming entangled. A) fiberglass B) spinning C) rattan D) metal B) spinning Barometric damper's are used to: A) prevent excessive draft in appliances B) reduce flow C) minimize the stack effect D) eliminate wind induced downdraft A) Prevent excessive draft in appliances A catalytic combustor works to lower the ignition temperature of the escaping gases to approximately: A) 212°F B) 500°F C) 1100°F D) 1700°F B) 500°F