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Initial Installation
QUALIFIED INSTALLERS ONLY
VENTING INTO A CLASS ‘A’ CHIMNEY:
This model is also certied and tested to vent into CLASS
‘A’ wood stove chimneys.
Place the freestanding direct vent appliance in the
desired location.
Use a conversion kit from Simpson Duravent (931, 932,
or 933), or Security Chimney (SV4CCK1, SV4CCK2, or
SV4CCK1). Which kit is used will depending on the inner
diameter of the CLASS ‘A’ chimney that this appliance is
to be vented into.
Place a bead of high temperature silicone or mil-pac at
each connection to ensure a tight seal.
NOTE: An approved 4” (10 cm) diameter ex liner must
be used in the application.
NOTE: Use Simpson Dura Vent from the top of the
appliance until this vent reaches the CLASS ‘A’ chimney.
Install the retro adapter to the top section of GS direct
vent pipe and install the ex liner to the retro adapter.
Fully line the CLASS ‘A’ chimney with a minimum 4” (10
cm) ex liner to the top of the CLASS ‘A’ chimney.
Place a bead of high temperature silicone to the Simpson
Cap adapter and securely attach the ex liner to the
adapter.
Secure the cap adapter to the CLASS ‘A’ chimney
ensuring an airtight seal.
Install the vertical termination cap.
Light the unit and ensure proper operation.
THE USE OF ANY EXISTING CHIMNEY AS AN AIR INTAKE
IS NOT COVERED UNDER THE ANSI Z21.88-2002 CSA
2.33a-2002 TEST METHODS AND THE RESULTING ITS/
WH PRODUCT CERTIFICATION. THE CODE AUTHORITY
HAVING JURISDICTION MUST BE CONSULTED PRIOR
TO PROCEEDING WITH THIS INSTALLATION METHOD.
Simpson GS
Dura Vent Cap
Cap Adapter
Class ‘A’
Chimney
Roof Flashing
4”(10cm) Flex Liner
Inside Class ‘A’Chimney
Ceiling Rafters
GS Simpson Dura
Vent Pipe 4”x 6
5
/
8
”
Figure 33: Assembly of Venting into a Class ‘A’
Chimney.