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MAINTAIN AT LEAST
8" CLEARANCE
BETWEEN CAS
STOVE PIPE AND
CEILING
Fig 3
CUT AND FOLD SIDES OF CEILING SUPPORT TO BE FLUSH WITH
ROOF. SECURE WITH NAILS OR SCREWS AS DESCRIBED.
6
Figure 3
Figure 4
THROUGH-THE-CEILING
INSTALLATIONS
Step 1. Determine the location of the CAS
Ceiling Support. The CAS Ceiling Support is
installed instead of a standard Support Box.
The CAS Ceiling Support can support up to
40-ft of DuraPlus HTC chimney. The CAS
FOR THRU-
Ceiling Support should be located directly
THE-WALL
INSTALLATIONS
above the stove if possible to facilitate the
USING A CHASE
ENCLOSURE,
installation of the CAS Connector Pipe. If
PROVIDE AN
possible, use a plumb bob to ensure the center
ACCESS DOOR
FOR CLEANING
of the Ceiling Support will be directly over the
stove's outlet. If the CAS Ceiling Support is not
aligned with the stove outlet, elbows will be
required for the offset.
Step 2. Install CAS Ceiling Support. Cut
and frame an opening for the CAS Ceiling
Support. Refer to Table 1 for proper framing
dimensions. Install the CAS Ceiling Support
into the framed opening, and ensure the
Ceiling Support is level. The square portion of
the Ceiling Support must be a minimum of 2"
below the finished ceiling (Fig 1, 2). Secure
the Ceiling Support with at least (2) 1-1/2"
wood screws per side; minimum of (8) wood
screws total.
Ceiling Support can be left at full height (does
not need to be cut down), and it can act as
an insulation shield for the attic space. If the
CAS Ceiling Support is being installed into a
cathedral ceiling, the box can often be installed
connected directly to the roof rafters, and then
folded over and nailed down or trimmed to be
flush with the roof (Fig 4).
Support can be installed in a chase enclosure
that is placed directly against the outside
of the Ceiling Support and extends up to
the underside of the roof. In this type of
For most installations, the CAS
Alternatively, the CAS Ceiling
For Thru-the-Wall
installations using a
chase enclosure,
provide an access
door for cleaning.
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