Installation Guide
Page 9
... any gas vent, chimney, wall, ceiling, attic, crawlspace, or a concealed space of a building. Flexible metal vent: (Acceptable only if accessible to avoid crushing and kinking. Review "Vent System Chart" and, if necessary, modify existing vent system to follow these instructions can result in accordance with a quali ed electrician or service representative...
... any gas vent, chimney, wall, ceiling, attic, crawlspace, or a concealed space of a building. Flexible metal vent: (Acceptable only if accessible to avoid crushing and kinking. Review "Vent System Chart" and, if necessary, modify existing vent system to follow these instructions can result in accordance with a quali ed electrician or service representative...