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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.
SimpsonGS
DuraVentCap
CapAdapter
Class‘A’
Chimney
Roof Flashing
4”(10cm)Flex Liner
InsideClass ‘A’Chimney
CeilingRafters
GSSimpson Dura
Vent Pipe4”x 6
5
/
8
”
Figure 36: Assembly of Venting into a Class
‘A’ Chimney.
Initial Installation
QUALIFIED INSTALLERS ONLY