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4-00 19 30491D
BW36 SERIES WOODBURNING FIREPLACE
No one builds a better fire
1. Materials for the Chase.
The chase is constructed using framing mate-
rials much the same as the walls in your
home. A variety of materials may be used
including brick, stone, veneer brick, or stan-
dard siding materials.
In constructing the chase, several factors
must be considered.
a. Maintain a 1" minimum air space around
the firebox.
b. Maintain a 2" air space around the chim-
ney.
c. The chase top must be constructed of a
non-combustible material.
d. In cold climates a firestop spacer should
be installed in an insulated false ceiling
at the 8 foot level above the firebox
assembly. This prevents heat loss
through the fireplace.
e. In cold climates, the walls of the chase
should be insulated to the level of the
false ceiling as shown in Figure 21. This
will help prevent heat loss from the home
around and through the fireplace.
2. Installing a Terminal Cap on a Chase Enclosed
Chimney.
Construct a chase of desired materials maintaining a mini-
mum 2" air space around the chimney.
Figure 21
Chase Assembly
FIRESTOP
SPACER
METAL CHASE TOP
ROUND TERMINAL CAP
(TR342, TR344)
FALSE
CEILING
WARNING!
DETAIL INSTRUCTIONS FOR INSTALLA-
TION OF THE CHASE TOP, STORM COL-
LAR AND TERMINAL CAP ARE PACKAGED
WITH THESE PARTS. TO AVOID DANGER
OF FIRE, ALL INSTRUCTIONS MUST BE
STRICTLY FOLLOWED, INCLUDING THE
PROVISION OF AIR SPACE CLEARANCE
BETWEEN CHIMNEY SYSTEM AND ENCLO-
SURE. TO PROTECT AGAINST AGAINST
THE EFFECTS OF CORROSION ON THOSE
PARTS EXPOSED TO THE WEATHER, WE
RECOMMEND THAT THE CHASE TOP AND
TERMINAL CAP BE PAINTED WITH A RUST
RESISTANT PAINT.
WARNING!
NEVER INSTALL A SINGLE WALL SLIP SECTION OR
SMOKE-PIPE IN A CHASE STRUCTURE. THE HIGH-
ER TEMPERATURE OF THIS SINGLE WALL PIPE
MAY RADIATE SUFFICIENT HEAT TO COM-
BUSTIBLE CHASE MATERIALS TO CAUSE A FIRE.
Install the chimney sections up through the chase
enclosure. When using a round terminal cap
(TR344), the last section of pipe must extend above
the top of the chase cone to allow installation of the
storm collar and terminal cap.
A telescoping round terminal cap (TR342) is provided
to simplify the installation of the terminal cap on a
chase installation. The uppermost chimney section
must terminate below the level of the chase top, but
be no more than 15” below the level of the chase top.
A 2” tall flashing collar must be provided on the chase
top.
The ST375 Square Terminal Cap is intended for a
chase installation. The uppermost chimney section
must terminate no more than 4-3/4 below the level of
the chase top. A 2” tall flashing collar must be pro-
vided on the chase top.
When installing a TS345 or TS345P Square
Termination, the uppermost chimney section must not
be more than 3” below the chase top.
Attach the chase top (CT35) to the top of the chase.
Install the terminal cap, using the instructions provid-
ed with it.