Heatilator ODYSSEY ODY42 Installation & Operating Instructions Manual page 16

4. Assembling Chimney Sections
Attach either a straight chimney section or an offset to the
top of the fireplace depending on your installation
requirement. See Figure 11. Chimney sections are locked
together by pushing downward until the top section meets
the top head on the lower section. See Figure 12. When
using offsets and returns, we recommend the offset and
return sections be secured in place with screws to ensure
proper orientation.
5. Prepare the Ceiling for Firestop Spacers
Mark and cut out an opening in the ceiling for the particular
firestop spacer being utilized (14-1/2” x 14-1/2” for an
FS338, 14-1/2” x 18-3/4” for an FS339, or 14-1/2” x 23” for
an FS340). Frame the opening with the same dimension
lumber used in the ceiling joists.
6. Install the Firestop Spacers
Install the firestop spacer FS338 (Straight), FS339 (if a
15° offset is located in the ceiling joist area) or FS340 (if
a 30° offset is located in the ceiling joist area). Nail the
four sides of the firestop spacer to the joists using a
minimum of three nails per side.
16
ODYSSEY SERIES FIREPLACE WITH GAS LOG SET
Note:
The inner flue is
placed to the of the
flue section below it. The
outer casing is placed
the outer casing
of the chimney section
below it. See Figure 12.
31818 Rev J
These firestop spacers are designed to provide the
minimum two inch air space required around the
chimney. In all situations, the firestop spacers are to be
nailed to the ceiling joists from the bottom or fireplace
side, when the space above is an insulated
ceiling or attic space. In this situation, the firestop spacer
must be nailed from the top side to prevent loose
insulation from falling into the required two inch air space
around the chimney. See Figure 13.
Æ
7. Install an AS8 Attic Insulation Shield
An insulation shield should be installed when there is a
possibility of insulation coming into contact with the factory
built chimney system.
Bend the tabs at the top of the attic insulation shield
inward. This will help keep the chimney section
centered in the shield.
Position the shield over the vertical chimney section
where it penetrates a firestop spacer. The FS338
will support the AS8. See Figure 14, page 17.
Slide the shield down until it rests on the firestop
spacer. The firestop spacer will support the insulation
shield. See Figure 14.
When the factory built chimney penetrates an insulated
ceiling at either 15 or 30 degrees from vertical, an
insulation dam should be constructed from plywood of
sheet metal. A minimum 2” air space must be provided
between the insulation dam and the factory built chimney
system.
CAUTION:
01/04