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CHIMNEY OFFSET 30 THROUGH FLOOR
OR CEILING
It may be necessary to assemble the chimney
at 30 when passing through the floor or
ceiling area. Use the F8FS30-2 firestop spacer
as shown in Figures 50 and 51 .
Support the chimney at floor or ceiling pen-
etration with a FTF8 stabilizer if distance of
chimney below ceiling is 10' (3 m) or more.
Maintain 2" (51 mm) minimum air space to
combustibles from chimney sections. The
chimney must pass vertically through the
attic space.
Attic Space
F8FS30-2
Firestop
Spacer
FTF8-S4
Stabilizer
2" (51mm)
Min. Air
Space
10'
(3m) Max.
Figure 50
Room Above
F8FS30-2
Firestop
Spacer
FTF8-S4
2" (51mm)
Stabilizer
Min. Air
Space
10'
(3m) Max.
Figure 51
GLASS DOORS
Both the CST and CPF fireplaces require the
use of glass doors. The selection of glass
doors available for use with these fireplaces
are: 38ABF, 38ABF-BB and 38TBA-BB. For
the CPF system, end panels model 38AEP
and 38AEP-BB are available. Refer to the
Suggested List Price Sheet. The use of any
other non-listed door on these fireplaces
may result in a potential fire hazard and is
not recommended.
IMPORTANT: IT IS NECESSARY TO ORDER
AND INSTALL THE DOOR STYLE OF YOUR
CHOICE. GLASS DOORS ARE NOT OPTIONAL.
CAUTION: REMOVE THE PLASTIC PROTEC-
TIVE COATING FROM THE DOORS BRASS
PIECES BEFORE ASSEMBLY AND INSTALLA-
TION. FAILURE TO REMOVE THE COATING
BEFORE FIRST USE WILL RESULT IN DAM-
AGE TO THE BRASS FINISH.
Make a careful inspection of all parts before
installing the doors to insure they are undam-
aged and complete. There will be two (2) glass
door assemblies for both sides of the CST-38
fireplace and two (2) glass door assemblies
plus one (1) end panel for the CPF-38 fireplace.
CAUTION: DO NOT TOUCH THE DOORS WITH
2" (51mm)
Min. Air
YOUR HANDS WHILE THE FIREPLACE IS IN
Space
USE. ALWAYS USE DOOR HANDLES. DOORS
WILL BECOME VERY HOT WHEN FIREPLACE
IS IN USE.
Note: Design characteristics of a dual-opening
fireplace (whether masonry or factory-built)
30 Firestop
may cause it to not draft properly and smoke.
and Attic Above
For this reason, glass doors are required with
Models CST-38 and CPF-38 fireplaces.
WARNING: THESE FIREPLACES SHOULD
BE OPERATED ONLY WITH THE DOORS
2" (51mm)
FULLY CLOSED ( FIGURE 52 ).
Min. Air
Space
30 Firestop
and Room Above
Figure 52
OPTIONAL EQUIPMENT
Combustion Air Kit
Use combustion air kit, Model AK-4 or
AK-4LD ( Figure 53 ), with these fireplace sys-
tems. Refer to installation instructions packed
with the air kit for specific information. Outside
air drawn into the fireplace supplies air to the
fire for combustion. The outside air kit must be
installed before the fireplace is framed and
enclosed in the finished walls.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
There is a one-hand operated shut-off valve
located in the enclosed corner of the fireplace
opening behind the screen. Refer to label for
directions of operation. The combustion air
damper should be fully open when the fire-
place is in operation and fully closed when the
fireplace is not in use to prevent outside air
from entering your home.
If additional length of duct is necessary, pur-
chase locally available Class 0 or Class 1 duct-
ing. The duct may extend up to 50' (15.2 m) in
any direction.
Combustion
Air Kit
Figure 53
Outside combustion air may be run upwards
or vertically through framing and ceiling joists,
with the hood installed through an outside wall
and 3' (914 mm) below the termination. Duct-
ing may also be run downward through floor
joists and under the home to a ventilated
crawlspace not considered part of the living
area of the home.
CAUTION: NEVER LOCATE THE AIR INLET
WHERE IT COULD BE BLOCKED BY SHRUBS,
SNOW DRIFTS, ETC. NEVER LOCATE THE
AIR INLET IN GARAGE OR ANY AREA WHERE
THERE IS ANOTHER FUEL BURNING APPLI-
ANCE OR PRODUCTS EMITTING COMBUS-
TIBLE GASES SUCH AS PAINT, GASOLINE,
ETC. IN COLD CLIMATES, IT IS RECOM-
MENDED THAT THE COMBUSTION AIR DUCT
BE INSULATED.
Note: Do not terminate combustion air kit in
attic space under any circumstances.
CAUTION: IN NO EVENT MAY THE TOTAL DUCT
FOR BRINGING IN OUTSIDE AIR EXCEED 50'
(15.2 M).
17
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