User Guide

Z-FLEX
®
GENERAL INSTRUCTIONS
WARNING: Do not use any materials other than those specified in the instructions.
1. These instructions are for models GAK, GAFK, GIAK and GIAFK.
2. Read the installation instructions carefully prior to installing the chimney liner. If doubts exist, contact your
local distributor or Z-Flex at 1-800-654-5600 (in NH 603-669-5136).
3. Clean and repair chimney as required. NOTE: Removal of all tar glazed creosote is a must prior
to installation of chimney liner. Also, cracked, loose or missing bricks, mortar or other materials that
could inhibit correct installation of the chimney lining system should be removed/repaired.
4. Contact your local building or fire officials about any restrictions and inspections required.
5. The wall penetration assemblies must not be located directly behind a heating appliance.
6. The chimney liner must not be sized less than that specified in the appliance manufacturer’s instructions.
7. The liner may be purchased in various lengths to suit chimney height. If it is necessary a single joint is allowed
to join two liners.
8. Nose cone is a catalogue item and is sold by Z-Flex.
9. Be sure to extend the chimney liner to conform to applicable building codes (local & national). That is, chimneys
are required to extend at least three (3) feet above the highest point where they pass through the roof of a
building, and at least two (2) feet higher than any portion of the building within 10 feet (see illustration).
10. The air space clearance between the masonry chimney exterior and combustible materials should be checked to
verify that the chimney is in accordance with the clearance specifications contained in the NFPA 211 Standard
or other recognized major building codes, i.e., on an exterior chimney, clearance is 1” while on an interior
chimney, clearance is 2”.
CHIMNEY HEIGHT ABOVE ROOF LINE
2 FT.
IF WITHIN 10 FT.
3 FT.
– 2 –
Installation Guide