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OUTSIDE OF
FIREPLACE
GAS LINE
CONDUIT
REMOVE
INSULATION
TEMPORARILY
(DO NOT
DISCARD)
REMOVE
GAS CONDUIT
AFTER REMOVING
COVER
GAS LINE COVER
PLATE, REPLACE
SCREWS
Figure 14
OUTSIDE OF
FIREPLACE
INCOMING
1/2" BLACK
GAS LINE
IRON PIPE
CONDUIT
REPACK
INSULATION
Figure 15
HEARTH EXTENSION
A hearth extension projecting a minimum of 16" in front and a
minimum of 8" beyond each side of the fireplace opening is required
to protect combustible floor construction in front of the fireplace.
Use a layer of noncombustible, inorganic material having a thermal
conductivity of K=0.84 BTU in/ft hr F (or less) at 1" thick.
Example of determining hearth extension equivalent: If the
material selected has a K Factor (obtainable from supplier) of 0.25,
such as glass fiber, then the following formula would apply; 0.25/
0.84 x 1"=.30 thk. This must be converted by any noncombustible
materials such as tile, slate, brick, concrete, metal, glass marble,
stone, etc. Fasten the hearth extension to the floor to prevent shifting
and seal the gap between the fireplace frame and hearth extension
with a noncombustible material (see Figure 16).
STANDARD
HEARTH
EMBER PROTECTOR
SEAL GAP
RAISED
HEARTH
EMBER PROTECTOR
ELEVATED
FIREPLACE
Figure 16
SIDE FIREBRICK
FINISHED SIDE
REMOVE
KNOCKOUT
REFRACTORY
KNOCKOUT PLUG
REMOVE BY TAPPING
LIGHTLY WITH A
1/2" DOWEL
SIDE FIREBRICK
FINISHED SIDE
PROVIDE ENOUGH
THREADED END
FOR FITTING
CONNECTION
SEAL OPENING
WITH REFRACTORY
CEMENT
SEAL GAP
MAX
EMBER PROTECTOR
WARNING:
STALLED ONLY AS ILLUSTRATED.
COLD CLIMATE INSTALLATION:
The following installation procedures are recommended when in-
stalling an VANGUARD fireplace system in a COLD CLIMATE
AREA. Following these steps will aids in reducing cold air infiltra-
tion from the fireplace enclosure into living space.
1. The fireplace must be placed on a solid, continuous surface. You
should insulate under the fireplace in all cold climate areas.
2. In the case of a raised platform or cantilevered chase, you should
insulate under the structure to reduce air infiltration.
3. Insulate the walls of the chase, both the outer and interior parti-
tioning wall (see Figure 17).
4. Fire stopping a chase at the ceiling level is recommended for
safety and reducing cold air movement.
5. DO NOT insulate the chase with BLOWN OR FILL TYPE IN-
SULATION. Insulation should only be in contact with the fire-
place where framing would normally be in proximity.
6. DO NOT INSULATE on top of the firebox. You must not block
the airflow system of the flue pipe.
CHIMNEY CAP
8 Foot
LEVEL
Figure 17
7. Before finishing the fireplace enclosure, inspect all joints around
fireplace periphery. Any gaps between the nailing flanges and
the framing should be sealed with noncombustible installation
or caulking (see Figure 18). If the fireplace is mounted on a raised
platform, insulate below the platform to prevent cold air perme-
ation (by means of conduction).
TOP VIEW
NORMAL
FRAMING
5"
PACK INSULATION
IN FRAMING GAPS
TOP VIEW
WIDE
FRAMING
Figure 18
6
HEARTH EXTENSION IS TO BE IN-
FLASHING
CHIMNEY SECTIONS
INSULATE OUTSIDE
WALLS OF CHASE
NOTE:
FIRESTOP SPACER
MUST BE USED.
SOLID CONTINUOUS
SURFACE
(THERMAL BARRIER)
OUTSIDE BASE
A 33" X 1" FIBERGLASS INSULATION
STRIP MUST BE PLACE BETWEEN
STUD AND FULL LENGTH OF
NAILING FLANGE.
CAULK GAPS BETWEEN DRYWALL AND
OUTER PERIMETER OF FRONT FACE
WITH NONCOMBUSTIBLE CAULKING
(FOR BOTH NORMAL AND WIDE FRAMING)
INSULATE JOIST
SAME AS CEILING
SOLID
SURFACE
FIRESTOP SPACER
55508
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