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OPTIONAL
HIGH WIND
CAP FOR GAS
VENT ONLY
SEALANT
Fig 18
sheet metal screws equally spaced at 90 degrees (do not penetrate inner liner). The
Storm Collar will rest on the Top Plate and serves as the support for the Flex Liner
system. This system is listed by OMNI Test Laboratories to support up to 50 feet
of Flex Liner or rigid Pipe Sections. See Figure 18.
Step 4. Seal the Storm Collar where it meets the Pipe Section using 500RTV non-
hardening sealant, then twist-lock the appropriate Termination Cap to the Pipe
Section. As an alternative to the standard cap, you may want to install a High-Wind
Termination Cap (gas only) in areas where wind may be a concern. (Figure 18, 19)
Step 5. For improved draft, the liner may be extended in height above the top of the
masonry chimney by simply adding additional Pipe Sections. If the vent is more than
3 feet above the top of the chimney, secure it with a locally fabricated brace, as shown
in Figure 19.
If your DuraFlex Liner installation does not have a 1"clearance from the outside of
the masonry to combustibles, as well as 1" clearance from the liner to the inside of
the masonry, then you will need to install the Liner with Insullation Sleeves in order
to insure a proper installation. If however, your installation can meet the required
clearances, you will not need to use Insullation Sleeves.
Step 1. Remove Flex Liner from packaging and straighten Flex Liner and measure
NorthlineExpress.com
PELLET VENT CAP
(FOR OIL AND
PELLET VENT)
GAS VENT OR
PELLET VENT
PIPE (DEPEND-
ING ON
APPLIANCE)
STORM COLLAR
TOP
PLATE
FLEX
CONNECTOR
STAINLESS
STEEL FLEX
LINER
INSULATION SLEEVE INSTALLATION
http://www.northlineexpress.com
OPTIONAL
HIGH WIND
CAP FOR GAS
VENT ONLY
ROOF
SUPPORT
Fig 19
10.
PELLET
VENT CAP
(FOR OIL
AND
PELLET
VENT)
Toll-Free 1-866-667-8454
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