Insulated Chase Construction - Lennox Hearth Products Villa Vista Installation & Operation Manual

INSULATED CHASE CONSTRUCTION

UNIVERSAL SUPPORT
WITH STRAP
ATTACHED TO JOIST
ATTIC RADIATION
SHIELD
FIRESTOP
7 ft.
min.
6'8" min
1/2" PLYWOOD
Figure 12
STORM COLLAR
FLASHING
CEILING/FLOOR
SEPARATION
MUST HAVE SAME FIRESTOPPING
RESISTANCE AS ADJACENT WALL.
MUST HAVE THE SAME INSULATION
AS ADJACENT CEILING.
FOLLOW LOCAL RULES REGARDING
FRAMING CONSTRUCTION.
GYPSUMBOARD
Drywall or Any Rigid
OR ANY
Material RIGID MATERIAL.
NOTE:
FLOOR AND WALL BELOW THE ATTIC
MUST BE INSULATED USING THE SAME
INSULATION.
BASE IF REQUIRED.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Chase Enclosure
A chase is a vertical box-like structure construct-
ed to surround the fireplace and chimney. Refer
to Figure 12 for a typical chase configuration.
As with all chimney installations, avoid overhead
obstructions such as trees, power lines, etc.
A chase should be constructed and insulated
just like any outside wall. In a cold climate, we
recommend the base of the chase should also
be insulated between the solid continuous floor
beneath the fireplace and the chase bottom.
Chase insulation in a cold climate installation
is not required for safety.
WARNING
If insulation is used, the fireplace
must not be placed directly
against it. Insulation or vapor
barriers, if used, must first be
covered with drywall panels,
plywood, particle board or other
material to assure insulation and
vapor barriers remain in place.
WARNING
Do not pack or fill required air
spaces with insulation or other
material. No material is allowed
in these areas.
Note: Do not insulate the chase cavity with
blown or fill type insulation materials.
Note: Local codes may not require firestopping
at the ceiling levels for outside chase installa-
tions. However, it is recommended for safety
and the reduction of heat loss.
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