User Guide

Z-FLEX “OS” CHIMNEY LINER
The Z-Flex Flexible Liner is intended for use as a chimney liner in masonry
or pre-fab metal chimneys for oil burning appliances listed for use with type
L vents, gas burning appliances equipped with draft hoods or listed with type
B gas vents or listed solid fuel pellet fi red appliances whose continuous gas
temperature does not exceed 570˚ F.
• Z-Flex Flexible Liner
• Rain Cap
• Chimney Flashing
• Mortar Guard
• Top Support
Manufacturerʼs address: Z-Flex, Inc.
20 Commerce Park North
Bedford, NH 03110-6911
GENERAL INSTRUCTIONS
WARNING: Do not use any materials other than those specifi ed in these
instructions.
1. 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.)
2. 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.
3. Contact your local building or fire officials about any restrictions and
inspections required.
4. The wall penetration assemblies must not be located directly behind a heating
appliance.
5. The chimney liner must not be sized less than that specifi ed in the appliance
manufacturerʼs instructions.
6. The liner may be purchased in various lengths to suite chimney height. If it
is necessary a single joint can be allowed to join two liners.
7. Nose Cone is a catalog item and is sold by Z-Flex.
8. 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 building,
and at least two (2) feet higher than any portion of the building within 10 feet
(see illustration on next page).
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