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11
ODSHR Series
20002264
5. Installing the Chimney System
Start by attaching the first chimney section to the collar
on top of the fireplace.
Install the pipe as pictured in Figure 14. When you get
a good lock, you will hear the pipe clearly snap to-
gether. Once sections are snap-locked in place, it is
extremely difficult to get them apart. Make sure the
pipe is firmly snapped and locked together as each
pipe section is mounted.
When installing elbows, only outer pipe will snap- lock.
Middle pipes simply slide into position. Be sure to
always attach straps on upper elbow to a structural
framing member. (Fig. 15)
Continue installing the pipe as required until pipe is
installed up through the ceiling. At this point, you must
install a firestop spacer.
Installing the Firestop Spacer
in the Ceiling Hole
A firestop spacer is used to keep pipe spaced properly
and required for safety.
Nail the firestop spacer (at each corner) to the framing
members of the ceiling hole. Note: A firestop spacer is
not required at the roof.
Hole sizes listed in Figure 10 for angled firestop spac-
ers provide minimum required air space to chimney
pipe for ceiling thickness up to eight (8) inches. When
combined thickness of ceiling material, ceiling joists
and flooring material exceeds eight (8) inches, adjust-
ments must be made in framing to assure that minimum
air spaces to chimney are maintained.
Proper Firestop Spacer Installation
Figure 16 shows different installation procedures for
both an area that
is
an attic and an area that
is not
an
attic.
If the area above the
ceiling is not an attic,
position the firestop
spacer with the flange on
the ceiling side and the
angled portion extending
up into the hole.
If the area above the
ceiling is an attic, position
the firestop spacer with
the flange on the top of
the framed hole and the
angled portion extending
down into the hole.
Elbow Strap
Angled Strap
Fig. 15 Attach straps to a structural framing member.
FP270/271
Support Structure
Elbow Strap
(must be tight)
Ceiling
Hole
Framing
Angle Firestop
Chimney Support
Strap
(must be tight)
Attic Installation
Ceiling Installation
Fig. 16 Installing firestop spacer.
FP285
Nails (4)
Firestop Spacer
Joist
Joist
Firestop
Spacer
Nails (4)
Flange Down Into Hole
Flange Up Into Hole
UP
FP558SHR
Fig. 14 Install pipe, listening for the snap-lock to fasten.
Pipe Section
Hem
Lance
Pipe
Rim
Pipe
Rim