DuraVent Combustion Air Systems for DuraTech - Manual (Page 5)

5
Framing Dimensions
COMPONENT
6"
DIAMETER
8"
DIAMETER
DURATECH
CAS CEILING SUPPort 12-1/4" 14-1/2"
CAS wALL thImbLE 12-1/4" 14-1/4"
DURATECH CHIMNEY CAS
INSTALLATION
The DuraVent Combustion Air System (CAS) can
be used with both vertical (through-the-ceiling)
and horizontal (through-the-wall) DuraTech
chimney installations. The CAS system is
designed to be used with stoves that have a
specific air-inlet on the back of the stove. Verify
the stove you are using has an air-inlet to which
the CAS system can be attached.
GENERAL INSTALLATION
REQUIREMENTS
These CAS installation instructions are intended
to be used with the full installation instructions
for DuraTech. Except as described in these
installation instructions, always follow the
DuraTech installation instructions for a safe
installation. These CAS installation instructions
describe how to connect the CAS system to the
DuraTech chimney system, and how to connect
the CAS system to the stove. In order for the CAS
system to be function properly, the system needs
access to outside air. The outside air is intended
to come through the ventilated attic space or
flashing (through-the-ceiling installations, Fig
1 & 2) or through the chase (through-the-wall
installations, Fig 3).
Table 1
Figure 1
Figure 2
SqUARE
PORTION
OF CEILING
SUPPORT MUST
BE AT LEAST
3" BELOW
FINISHED
CEILING
SHORT SIDE OF
CEILING SUPPORT
MUST BE AT LEAST
3" BELOW FINISHED
CEILING
MAINTAIN
AT LEAST 6"
CLEARANCE
BETWEEN CAS
STOVE PIPE AND
WALL
MAINTAIN
AT LEAST 6"
CLEARANCE
BETWEEN CAS
STOVE PIPE AND
WALL