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13
MASONRY CHIMNEY
Ensure that a masonry chimney meets the minimum standards of the National Fire Protection Association (NFPA)
by having it inspected by a professional. Make sure there are no cracks, loose mortar or other signs of deterioration
and blockage. Have the chimney cleaned before the furnace is installed and operated. When connecting the
furnace through a combustible wall to a masonry chimney, special methods are needed as explained in the
“Combustible Wall Chimney Connector Pass-Throughs” Section.
Summary of Contents for Clayton CL1660E
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