
Astria.us.com
126647-01_E
5
FIREPLACE INSTALLATION
GLOSSARY
Flush Installation -
type of installation where front face of fireplace
is even or level with wall.
Chase Installation -
type of installation where chimney is enclosed.
Perpendicular Side Wall -
applies to minimum clearance between
side wall and fireplace opening.
Nailing Flange -
extended part on both sides of fireplace face that
secures fireplace to wall.
Termination -
cap that is placed at end of chimney pipe.
SELECTING LOCATION
To determine safest and most efficient location for fireplace, you
must take into consideration the following guidelines:
1. The location must allow for proper clearances (see below).
2. Consider a location where the fireplace will not be affected by
drafts, air conditioning ducts, windows or doors.
3. A location that avoids the cutting of joists or roof rafters will
make installation easier.
4. If an outside air kit is to be installed, accessibility to outside
combustion air must be considered. This can also be achieved
through a vented crawl space in some cases (see Optional
Outside Air Kit on page 7).
5. If gas line is to be installed, consider location of gas supply.
MINIMUM CLEARANCE TO COMBUSTIBLES
Back and sides of fireplace
3/4" (19 mm) Min.*
Top spacers
0" (0 mm)
Perpendicular side wall to opening of unit 24" (610 mm) Min.
Btm. of fireplace to floor (step 2 of Framing) 0" (0 mm) Min.
Mantel clearances see Mantel clearances, page 6
Chimney outer pipe surfaces
2" (51 mm) Min.
Chase inside dimension
16 1/2" (420 mm) Min.
WARNING: DO NOT PACK REQUIRED AIR SPACES
WITH INSULATION OR OTHER MATERIALS.
Do not obstruct fireplace openings (ie. louvers, etc.)
with any type of facing material. Combustible mate-
rial must not be in contact with back of front face of
fireplace.
FRAMING
1. Frame opening for fireplace using dimensions shown in Figures
2 and 3.
2. If fireplace is to be installed directly on carpeting, tile or any
combustible material other than wood flooring, fireplace must
be installed upon a metal or wood panel extending full width and
depth of fireplace.
3. Set fireplace directly in front of this opening and slide unit back
until nailing flanges touch side framing.
4. Check level of fireplace and shim with sheet metal if necessary.
5. Before securing fireplace to prepared framing, ember protector
(provided) must be placed between hearth extension (not sup-
plied) and under bottom front edge of fireplace to protect against
glowing embers falling through. If fireplace is to be installed on a
raised platform, a Z-type ember protector (not supplied) must be
fabricated to fit your required platform height. Ember protector
should extend under fireplace a minimum of 1". Ember protector
should be made of galvanized sheet metal (28 gauge minimum)
to prevent corrosion (see Figure 5).
6. Using screws or nails, secure fireplace to framing through flanges
located on sides of fireplace (see Figure 4).
Figure 2 - Framing Dimensions
Figure 3 - Corner Installation
38-
5
/
8
"
(981 mm)
43
"
(1093 mm)
21-
1
/
2
"
(546 mm)
FRONT VIEW
SIDE VIEW
52
"
(1321 mm)
Minimum
2x4 Stud for
Nailing Flange
Back and Side
16-
1
/
2
"
(419 mm)
Perpendicular Wall
Combustible Wall
24
"
(610 mm) Min.
to Unprotected
Wall
10-
7
/
8
"
(277 mm)
Figure 4 - Nailing Flanges
Nailing
Flange
Nail or
Screw