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Installation
Only For Qualified Installers
Use Only Approved Venting
This appliance has been tested and is listed for
installation with Simpson Duravent GS and Duraflex
AL venting components. The warranty will be voided,
and serious fire, health, or other safety hazards may
result from any of the following actions:
• Installation of any damaged Simpson Duravent
component.
• Unauthorized modification of the Simpson Du-
ravent System.
• Installation of any component part not manufac-
tured or approved by Simpson Duravent.
• Installation other than as instructed by Simpson
Duravent and the appliance manufacturer.
Consult your local building codes before begin-
ning the installation, and follow the manufacturer’s
instructions exactly. The Simpson Duravent venting
components listed below are approved for use with
the ShadowLight XL Direct Vent Gas Insert.
Flashing
Chimney Liner Termination
Kit. Includes flashing.
Stock # 923GK
High Wind Cap
Stock# 991
Chimney Cap Components
Duraflex AL - Flexible Aluminum Pipe Lengths
Size Length Stock #
3” 25’ 2270
3” 35’ 2280
3” 50’ 2290
Typical Chimney
Tile Liner
Vent Pipe
Air Intake Pipe
Uncoil the three inch aluminum chimney liners on the
ground and measure to make sure the pipes are long
enough. Mark one of the liners at both ends with paint
and use it for the exhaust side connection. Once they
are in the chimney it allows easier identification of
intake and exhaust connections.
Flashing
Figure__
Air Intake
Vent
Minimum vertical vent pipe length is 10 Feet.
Maximum horizontal distance is 36”.
A bead of silicone goes
between the top of
the tile liner and the
flashing to seal the cap
to the chimney
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