Desa F48H(i)(R) - Manual (Page 10)

www.desatech.com 122272-01C 10
10 FOOT RULE
All flue gas outlet chimney terminations must
extend a minimum of 3 feet in height above
highest point where it passes through the roof
and must be at least 2 feet above highest point
of the roof that is within a horizontal distance
of 10 feet (see Figure 17).
installation
Continued
FINISHING FIREPLACE
Combustible materials, such as wallboard,
gypsum board, sheet rock, drywall, plywood,
etc. may make direct contact with sides and
top around the fireplace face. It is important
that combustible materials do not overlap face
itself. Brick, glass, tile or other noncombustible
materials may overlap front face provided they
do not obstruct essential openings like louvered
slots or any other opening. When overlapping
with a noncombustible facing material, use only
noncombustible mortar or adhesive.
24" Min.
24" Min.
18"
Min.
Typ.
Figure 16 - Multiple Chase Installation
10'
2' Min.
10'
3' Min.
2' Min.
3' Min.
Level of
Flue Gas
Outlet
Figure 17 - 10 Foot Rule
Seal
Opening
with
Refractory
Cement
Outside of
Fireplace
Gas
Line
Conduit
Repack
Insulation
Incoming
1/2" Black
Iron Pipe
Side
Firebrick
Finished
Side
Provide Enough Threaded
End for Fitting Connection
Figure 18 - Gas Line Installation
OPTIONAL GAS LINE
INSTALLATION
Gas line hook up should be done by your sup-
plier or a qualified service person.
Note: Before you proceed, make sure your gas
supply is turned off. Use only a 1/2" black iron
pipe and appropriate fittings.
1. Remove gas line cover plate located on
either side of fireplace and pull out insula-
tion from gas line conduit sleeve. Save
insulation for reuse. Replace screws.
2. Run a 1/2" black iron gas line into fireplace
through rear at gas line conduit sleeve (if us-
ing a raised platform, add height). Provide
sufficient gas line into fireplace chamber for
fitting connection (see Figure 18).
Note: Secure incoming gas line to wood
framing to provide rigidity for threaded
end.
3. Repack insulation around gas line and into
sleeve opening. Seal any gaps between
gas line and refractory knockout hole with
refractory cement or commercial furnace
cement, Install the gas appliance or cap-off
gas line if desired.