Lennox Hearth Fire Pit HCI 36 H User Manual

INSTALLATION  
INSTRUCTIONS  
MERIT® SERIES  
36" Wood Burning Fireplaces  
P/N 850,046M REV. A 12/2008  
MODELS  
RDI-36  
HCI-36  
RDI-36-H  
HCI-36-H  
This installation manual will enable you to obtain a safe, efficient and  
dependable installation of your fireplace system. Please read and under-  
stand these instructions before beginning your installation.  
Do not alter or modify the fireplace or its components under any  
circumstances. Any modification or alteration of the fireplace system,  
including but not limited to the fireplace, chimney components and  
accessories, may void the warranty, listings and approvals of this system  
and could result in an unsafe and potentially dangerous installation.  
IMPORTANT! TO ASSURE PROPER ALIGNMENT OF GLASS DOORS:  
INSTALL THIS FIREPLACE IN A SQUARE AND PLUMB CONDITION,  
USING SHIMS AS NECESSARY AT SIDES AND/OR BOTTOM.  
INSTALLER: Leave this manual with the appliance.  
CONSUMER: Retain this manual for future reference.  
WH Report No. J9902-5865C-231  
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Note: Illustrations shown reflect typical”  
installations with nominal dimensions and  
are for design and framing reference only.  
Actual installations may vary due to indi-  
vidual design preferences. However, always  
maintain minimum clearances to combus-  
tible materials and do not violate any specific  
installation requirements.  
PRECAUTIONS  
WARNING: FAILURE TO USE MANUFAC-  
TUREPROVIDEDPARTS, VARIATIONSIN  
TECHNIQUES AND CONSTRUCTION MA-  
TERIALS OR PRACTICES OTHER THAN  
THOSE DESCRIBED IN THIS MANUAL  
MAY CREATE A FIRE HAZARD AND VOID  
THE LIMITED WARRANTY.  
Note: These fireplace systems are not difficult  
to install. However, in the interest of safety, it is  
recommendedthattheinstallerbeaqualifiedor  
certified tradesman” familiar with commonly  
accepted fireplace installation and safety tech-  
niques as well as prevailing local codes.  
These fireplaces have been tested and listed  
by Warnock Hersey (Report No. J9902-  
5865C-231)toU.L.standard127.Theseunits  
are intended for installation in residential  
homes and other buildings of conventional  
construction including commercial, not in  
mobile homes.  
The most important areas of concern dealing  
with the installation of factory-built fireplaces  
areclearancestocombustiblematerials,proper  
assembly of component parts, height of the  
chimney system, the proper use of accesso-  
ries supplied by the manufacturer and the  
techniques employed in using finishing mate-  
rials applied to the wall surrounding the fire-  
place,hearthextensionsandwallshields.Each  
of these topics will be covered in thorough  
detail throughout this manual. Please give  
each your special attention as you progress  
with your installation.  
When complete these fireplace systems con-  
sists of five basic sub-systems:  
1. The Fireplace  
2. The Chimney and Termination  
3. The Optional Glass Doors  
4. The Optional Combustion Air Kits  
5. Optional Cold Climate Kit (Mandatory in  
Canada).  
These fireplaces have been tested for installa-  
tioninCanadatoULC-S610. Forinstallations  
in Canada, the chimney clearance to com-  
bustibles must be 2 inches and the Cold  
Climate Kit must be installed.  
CLEARANCES AND HEIGHT  
REQUIREMENTS  
The fireplace may be placed on or near normal  
constructionmaterials*. Thecombustionairkit,  
firestop spacer and roof flashing (not chase  
flashings) may be placed directly on or against  
normal construction materials.* The chimney  
requires a minimum 2" air space clearance to  
combustibles. The fireplace outer wrapper  
requires a minimum 1" air space clearance to  
combustibles. A combustible mantle may be  
installed12"abovetheopeningofthefireplaceas  
per NFPA 211, Section 7-2.3.3. In Canada, the  
minimum is 18" above the fireplace opening.  
These fireplace systems are designed for in-  
stallation in accordance with the National Fire  
Protection Standard for chimneys, fireplaces  
and solid fuel burning appliances; NFPA 211  
and in accordance with codes such as the  
BOCABasic/NationalCodes,theStandardMe-  
chanicalCodeandtheUniformBuildingCodes.  
INTRODUCTION  
General Information  
These fireplaces are conventional radiant heat  
fireplaces with standard bar grates, optional  
outside combustion air kits and optional deco-  
rativeglassdoors. The"C"modelsaredesigned  
as heat circulating fireplaces and may be fitted  
with accessory fans.  
TYPICAL INSTALLATION  
Theminimuminstalledheightofthecompleted  
fireplacesystemis15' 0". Themaximumheight  
is 60' 0".  
The fireplace and chimney system must be  
enclosed when installed in or passing through  
alivingareawherecombustiblesorpeoplemay  
come in contact with it. This is important to  
prevent possible personal injury or fire hazard.  
Blower Kit  
(Optional)  
Chimney and  
Termination  
Chimney and  
Termination  
For questions, please call your distributor or  
the manufacturer. Special restrictions apply to  
the front and facing of the fireplace and nearby  
walls (See pages 16, 17 and 18 ).  
Outside  
CHIMNEY SYSTEM  
Combustion  
Air Kit  
Outside  
Combustion  
Air Kit  
(Optional)  
These fireplaces are designed and code listed  
for use with Security Chimneys FTF8 chimney  
System only. Always use Security Chimneys  
FTF8 chimney components with these fire-  
places. Do not modify or alter these compo-  
nents as this may cause a potential serious  
hazard and void the Warranty.  
(Optional)  
Radiant Model Shown  
Figure 1  
Circulating Model Shown  
*Construction Materials:  
• framing materials • paneling  
• particle board  
• dry wall  
• flooring  
etc.  
• plywood  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
3
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Insulate Joists  
Same As Ceiling  
Chimney Height  
LOCATION OF FIREPLACE  
The total height of your completed fireplace  
system from the surface the fireplace rests on  
to the chimney top must not exceed 60' and  
mustalsomeetminimumheightrequirements.  
Refer to the minimum system height chart.  
Carefully select the proper location for heat  
circulation, aesthetics, chimney obstructions  
andclearancetosidewall(s). Withproper pre-  
planning, a slight adjustment of a few inches  
can save considerable time and expense later  
during construction and assembly.  
Draft Stops  
Firestop  
Minimum System Height  
Security's FTF8 Pipe  
Vertical Installation  
One Offset  
15' 0"  
15' 0"  
25' 0"  
CTDT  
Termination  
Hearth  
Hearth  
Note: Non-  
Combustible  
Chase  
Flashing  
Must Be  
Used To  
Cover  
Chase  
Opening  
Two Offsets  
Chase Enclosure  
A chase is a vertical box-like structure con-  
structedtosurroundthefireplaceandchimney.  
Refer to Figure 2 for a typical chase configura-  
tion. 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 cli-  
mate installation is not required for safety.  
Optional  
Outside Chase  
Figure 4  
Optional  
Insulation  
In Outside  
Walls Of  
Chase  
Carefully consider the position of the fireplace  
opening with respect to the location of adja-  
cent or nearby stairwells, bath or kitchen ex-  
haustfansand/orreturnairregistersforforced  
air furnaces/air conditioners that could cause  
a smoking fireplace condition if the house is  
tightly insulated.  
8'  
Level  
Solid  
Continuous  
Surface  
ASSEMBLY OUTLINE  
Before You Start  
Outside  
Base  
Insulation  
(Thermal Barrier)  
Whenlocatingthefireplace,considerationmust  
be given to combustibles and final finishing.  
See Figure 5 and confine the final location of  
combustiblefinishmaterialstothe"SafeZone".  
Check your inventory list to be sure you have all  
the necessary parts supplied in good usable  
condition.Checkalsoforanyconcealeddamage.  
Figure 2  
DO NOT permanently place furniture or other  
items such as decorative pillows within 60" of  
the fireplace front face.  
WARNING: IF INSULATION IS USED, THE  
FIREPLACE MUST NOT BE PLACED DI-  
RECTLY AGAINST IT. INSULATION OR  
VAPORBARRIERS, IFUSED, MUSTFIRST  
BE COVERED WITH GYPSUM BOARD,  
PLYWOOD, PARTICLEBOARDOROTHER  
MATERIALTOASSUREINSULATIONAND  
VAPOR BARRIERS REMAIN IN PLACE.  
Checktheoperationofthedamper.Thedamper  
is controlled through the use of a control lever  
located within the firebox opening at the top  
centerjustbehindthefireboxlintel(Figure3).  
The control lever snaps into place at the ex-  
treme range of motion, up and back in the  
closed position. When pulled forward and  
down, the damper is open.  
Black Portion Of Frame  
Not To Be Covered With  
Combustible Materials  
Wall  
Covering  
12”  
45°  
WARNING: DO NOT PACK OR FILL RE-  
QUIRED AIR SPACES WITH INSULATION  
OR OTHER MATERIAL. NO MATERIAL IS  
ALLOWED IN THESE AREAS.  
1”  
Damper  
Closed  
Damper  
Open  
Door  
Opening  
Safe  
Zone  
Lintel  
12”  
Note: Do not insulate the chase cavity with  
blown or fill type insulation materials.  
Combustion  
Air Actuator  
Figure 5  
Note:Localcodesmaynotrequirefirestopping  
at the ceiling levels for outside chase installa-  
tions. However, it is recommended for safety  
and the reduction of heat loss.  
Figure 3  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
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1. Estimate the total weight of the fireplace  
system including chimney and surround ma-  
terials such as brick, stone, etc., to be in-  
stalled. Shipping weights for the fireplace  
may be found on page 18.  
ASSEMBLY STEPS  
Top Spacer  
Note:Thefollowingstepsrepresentthenormal  
sequence of installation. Each installation is  
unique, however, and might require a different  
sequence.  
Maintain  
1" (25 mm)  
Air Space  
At Back  
And Sides  
2. Measure the square footage of the floor  
spacetobeoccupiedbythesystem, surrounds  
and hearth extensions.  
1. Position firebox prior to framing or into  
prepared framing.  
Hearth  
Extension  
3. Notethefloorconstruction,i.e.2x6’s,2x8’s  
or 2 x 10’s, single or double joists, type and  
thickness of floor boards.  
2. Install the chimney system.  
1" (25 mm) Space  
3. Connect house wiring to the fireplace for  
Metal Safety Strip  
Floor  
later attachment of optional blower.  
4. Use this information and consult your local  
building code to determine if you need addi-  
tional support.  
Note: Hearth extensions must not interfere with  
circulating grillwork  
4. Install optional outside combustion air kit.  
5. Plumb gas line if a decorative gas appliance  
will be used. (Gas connections should only be  
performed by an experienced, licensed/certi-  
fied tradesman.)  
Figure 6  
CAUTION: DO NOT BLOCK THE HEAT-CIRCU-  
LATING AIR INLET AND OUTLET PORTS ON  
CIRCULATING MODELS. DOING SO MAY RE-  
SULT IN A POTENTIAL FIRE HAZARD.  
Maintain  
1" (25 mm)  
Air Space  
At Back  
6. Complete the installation, finish wall mate-  
rial, surround and hearth extension to your  
individual taste.  
If you plan to raise the fireplace and hearth  
extension, build the platform assembly then  
position fireplace and hearth extension on top.  
Secure the platform to the floor to prevent  
possible shifting.  
And Sides  
7. Assemble and attach optional glass door  
assembly.  
CLEARANCES  
Study the three dimensional illustration (Fig-  
ure 1 ) to get a general idea of each element of  
your fireplace system.  
Hearth  
Extension  
1" (25 mm) Space  
Minimum clearance to combustibles for the  
applianceisasfollows:sidesandback- 1"(25  
mm),floor-0"(0mm),adjacentwall-12"(305  
mm), ceiling - 37-1/2" (953 mm).  
PRE-INSTALLATION NOTES  
Metal Safety Strip  
Platform  
Floor  
The fireplace may be installed directly on a  
combustiblefloor or raisedonaplatformof an  
appropriate height. Do not place fireplace on  
carpeting,vinylorothersoftfloorcoverings.It  
may, however, be placed on flat wood, ply-  
wood, particle board or other hard surfaces.  
Be sure fireplace rests on a solid continuous  
floor or platform with appropriate framing for  
support and so that no cold air can enter the  
room from under the fireplace.  
INSTALLING THE FIREPLACE  
Note: Hearth extensions must not interfere with  
circulating grillwork  
Step 1. Slide the fireplace into prepared fram-  
ing or position fireplace in its final position and  
frame later.  
Figure 7  
Note: Install the hearth extension only as illus-  
trated.  
The fireplace may not be recessed into a com-  
bustiblefloor.Maintainthefloortohearthclear-  
ance established by the fireplace lower front  
face.  
The safety strips should extend from front of  
thefireplaceatleast1-1/2"andshouldextendto  
be at least flush with the sides. In the event a  
wooden support is used to elevate the fireplace  
abovethefloor,a“Ztypesafetystripshouldbe  
fabricated and used to protect the front surface  
ofthewoodsupportaswellasthefloorbeneath  
the hearth extension (Figures 8 and 9 ). The  
safety strips should be tacked down to prevent  
possible movement.  
The fireplace may be positioned and then the  
framing built around it, or the framing may be  
constructed and the fireplace positioned into  
the opening.  
Step 2. Insert the provided metal safety strips,  
beneath the fireplace as illustrated (Figures 6,  
7 and 8 ). The safety strips should overlap 1/2"  
for continual coverage of the floor.  
Usually, no special floor support is needed for  
the fireplace, however, to be certain:  
Note: Safety strips are not required when fire-  
place rests on a noncombustible surface.  
Note: The Z type safety strip is not supplied.  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
5
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FIREPLACE SPECIFICATIONS  
12-1/2"  
(318 mm)  
9"  
(229 mm)  
16-15/16"  
(428 mm)  
1-1/2"  
Metal Safety Strips  
36"  
(914 mm)  
44-1/4"  
(1124 mm)  
20-3/16"  
(513 mm)  
2-7/8"  
(73 mm)  
Figure 8  
7-1/8"  
(181 mm)  
Blocking  
41-3/4"  
(1060 mm)  
Front  
Fireplace Top Spacer  
Metal Safety Strips  
Combustion  
Air Inlet  
9-7/8"  
(251 mm)  
Figure 9  
Gas Line  
Access  
Step 3. Refer to fireplace drawings and specifi-  
cationsonpages6and7forframingdimensions  
and details. Frame appliance enclosure as illus-  
trated in Figures 11 through 14 on page 8.  
44-1/4"  
(1124 mm)  
10-1/8"  
(257 mm)  
39-3/16"  
(995 mm)  
36-5/16"  
(922 mm)  
Gas Line  
Access  
IMPORTANT: UNDER NO CIRCUMSTANCES  
CAN THE FIREPLACE TOP SPACERS (FIGURE  
10 ) BE REMOVED OR MODIFIED, NOR MAY  
YOUNOTCHTHEHEADERTOFITAROUNDOR  
BE INSTALLED LOWER THAN THE SPACERS.  
THE HEADER MAY BE IN DIRECT CONTACT  
WITH THE TOP SPACERS BUT MAY NOT BE  
SUPPORTED BY THEM.  
17-7/16"  
(443 mm)  
11-7/16"  
(290 mm)  
Junction  
Box  
21-5/16"  
20-11/16"  
(525 mm)  
(541 mm)  
Right Side  
Left Side  
Note: The framed depth, 21-3/4" (552 mm)  
from a framed wall, must always be measured  
from a finished surface. If a wall covering such  
asdrywallistobeattachedtotherearwall,then  
the 21-3/4" (552 mm) must be measured from  
the drywall surface. It is important that this  
dimension be exact.  
28-1/8"  
(714 mm)  
12-1/2"  
(318 mm)  
8-1/16"  
(205 mm)  
21-5/16"  
(541 mm)  
Fireplace  
Top Spacer  
If the appliance is to be elevated above floor  
level, a solid continuous platform must be  
constructed.  
1"  
41-3/4"  
(1060 mm)  
(25 mm)  
The header may rest on the top metal spacers,  
but must not be notched to fit around them.  
43-3/4"  
(1111 mm)  
Top View  
Consult all local codes.  
Figure 10  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
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FRAMING SPECIFICATIONS  
Framing Dimensions  
A
B
C
D
E
F
43"  
1092 mm  
C
D
Back Wall of  
Chase/Enclosure  
Including Finising  
Materials  
FOAK Combustion  
Air Kit - Optional  
44-1/2" 1130 mm  
29-1/2" 749 mm  
15-3/4" 400 mm  
if any  
J
F
73"  
1854 mm  
Header  
36-1/2" 927 mm  
21-3/4" 552 mm  
20-3/4" 527 mm  
51-5/8" 1311 mm  
A
E
G
H
J
Rough  
Framing Face  
(Unfinished Shown)  
B
Corner Installation  
Figure 14  
Note: Allframingdimensionscalcu-  
lated for 5/8" nailing flange depth  
and1/2"drywallatthefireplaceface.  
If sheathing the chase or finishing  
with other thickness materials, cal-  
culations will need to be made.  
A
Fireplace Framing  
Note: When Framing With 6” Studs Header Must  
Be 17” (432mm) Higher. Use Security’s OR15  
Offset/Return Elbow To Recess The Chimney Back  
2 1/2” (64mm). Maintain Required Clearance To  
Chimney At All Times.  
Note: C and G dimensions include  
Figure 11  
1" clearance to combustibles.  
Back Wall of Chase/Enclosure  
Including Finising Materials if any  
FOAK Combustion  
Air Kit  
Framing Dimensions for Ceiling  
Flue Type  
A
B
B
FTF8 Vertical  
16-1/2"  
16-1/2"  
A
G
(419 mm) (419 mm)  
Ceiling Framing  
FTF8 Offset 30° 16-1/2"  
25"  
A
(419 mm) (635 mm)  
Figure 15  
Rough  
Framing Face  
(Unfinished Shown)  
Inside Chase  
Figure 12  
Back Wall of Chase/Enclosure  
Including Finising Materials  
if any  
FOAK  
Combustion  
Air Kit - Optional  
Framing Dimensions for Roof  
Pitch  
0/12  
C
D*  
16-1/2"  
(419 mm)  
16-1/2"  
(419 mm)  
G
H
6/12  
16-1/2"  
(419 mm)  
19"  
(483 mm)  
C
A
D
Rough  
Framing Face  
(Unfinished Shown)  
Outside Chase  
Roof Framing  
12/12  
16-1/2"  
23-1/2"  
(419 mm)  
(597 mm)  
Figure 13  
Figure 16  
* Perpendicular to roof ridge  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
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Step 4. Fireplace should be secured to side  
framing members using the full length nailing  
tabs at the top and bottom of the fireplace front  
face. Use 8d nails or equivalent (Figure 17 ).  
Step 6. Connect the 6" (102 mm) Class 0 air  
duct provided by installer, to the duct collar on  
the fireplace and secure with two (2) screws  
from the kit’s hardware package.  
Framing must maintain adequate minimum air  
space clearance at all times.  
CAUTION: ALLOW MINIMUM 2" CHIMNEY  
AIRSPACETOCOMBUSTIBLEFRAMINGMEM-  
BERS THROUGHOUT VERTICAL OR OFFSET  
CHIMNEY INSTALLATION.  
Step 7. Route the Class 0 air duct out the back  
or side wall, up through the ceiling or floor  
joists to an outside wall. The air inlet hood  
should be located above snow level or above  
any anticipated snow level, (Figure 19 ).  
A minimum 2" air space must be reserved for  
all combustible materials extending for any  
continuous length surrounding the chimney.  
Install As Shown With Opening  
In Downward Position, Do Not  
Block Entrance  
8d Nail Or  
Equivalent  
ReferenceFigures15and16 andchartsFram-  
ing Dimensions for Ceiling and Roof, which  
specify minimum ceiling and roof dimensions.  
In new construction, to determine chimney cen-  
terline,useplumblinefromrooforceilingabove  
fireplace to center of flue collar on fireplace.  
5 Foot Min. Height  
From Outside  
Ground Level  
For remodeling, plumb to center of flue collar  
from ceiling above, drive nail through ceiling  
from below to mark position, then mark and  
cut to passage from above ceiling (around  
nail) (Figure 20 ). Then plumb from ceiling or  
roof level directly above hole which has just  
been completed.  
Figure 17  
Note: The nailing tabs and the area directly  
behind the nailing tabs are exempt from the  
clearances described on page 5. Maintain at  
least1/2"clearancefromthefireboxwrapperto  
the framing at the closest point of contact,  
directly adjacent to the flange.  
Figure 19  
Note: If the fireplace is installed against an  
inside wall, the class 0 air duct may be ex-  
tended into a ventilated attic space at least 18"  
(475mm) above the attic floor. Secure the air  
inlet hood to a vertical post with the inlet  
positioned downward. Ensure that nothing  
blocks the hood opening. This hood must  
never terminate higher than three (3) feet  
below the termination.  
For Canadian Installations  
A cold Climate Kit FTF8-CCK2-LD must be  
installed. CCK2 kits are available from  
FireCraft through your local dealer. Installer  
must supply suitable length of 6" Diameter,  
class "0" metallic air duct.  
Proceed with Steps 5 through 8  
Step 8. Cut or frame a hole through the outside  
wall for the installation of the air inlet hood. A  
6-1/2"diameterholeisrequired. Feedtheloose  
end of the flexible duct through the hole and  
attach to the collar on the air inlet hood using  
two (2) screws from the kit's hardware pack-  
age. Insert the hood into the opening. Secure  
theinlethoodinplacewithnailsdriventhrough  
the holes in the flange. Seal with noncombus-  
tible waterproof silicon type caulking.  
Step 5. Install the Cold Climate Kit to the  
fireplace following the instructions provided  
with the kit, (Figure 18 ).  
Chimney  
Duct  
Figure 20  
Install Screws  
Step 3. Position appropriate firestop spacer at  
ceiling and fasten temporarily with two (2) 8d  
nails or equivalent. Use flat firestop spacer,  
Model F8FS-2, if chimney penetrates ceiling  
vertically. If chimney penetrates ceiling at 30°  
angle(offsetchimney),use30°firestopspacer,  
Model F8FS30-2. Use one nail on opposite  
sides to hold firestop spacer in position. Nail  
permanently, using at least two (2) more 8d  
nails, after chimney sections have been as-  
sembled through the firestop spacer and after  
any necessary adjustments have been made.  
Firestopspacermustbesecuredbyatleastfour  
(4) 8d nails when completely installed.  
Duct  
Collar  
INSTALLING THE CHIMNEY SYSTEM  
Step 1. Before continuing, check the operation  
ofthedamper, asdescribedonpage4, (referto  
Figure 3 ).  
Front Cover  
Side Cover  
Plates  
Step 2. Using standard construction framing  
techniques,constructopeningforchimneyroute  
upthroughtheceiling(s)androoforthroughan  
outside chase.  
Plate  
Figure 18  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
8
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Note: If there is a room above ceiling level,  
firestopspacermustbeinstalledonthebottom  
side of the ceiling. If an attic is above ceiling  
level, firestop spacer must be installed on top  
side of ceiling joist (Figures 21 and 22 ).  
Ifthefluehasbeeninstalledcorrectly, itwillnot  
separate when you test it. Also, the inner flue  
joint where each section is joined should be  
tight and flat without gaps (Figure 26 ).  
Room Above  
F8FS30-2  
Firestop Spacer  
2" Min.  
Air Space  
Room Above  
2" Min.  
Air Space  
FTF8-S4 Stabilizer  
30° Firestop  
10'  
Max.  
And Room Above  
Figure 24  
Firestop Spacer  
For Canada Only  
When installing the chimney system through  
an open attic space, the attic shield assembly-  
firestop spacer must be used (Figure 25 ). This  
installation is required only for use in Canada.  
Figure 21  
Attic Above  
Figure 26  
Outer pipe section installs in just the opposite  
way; the lanced end goes down and each new  
section goes OVER the outside of the previous  
section installed (Figure 27 ).  
Open Attic Space  
Firestop Spacer  
Locking  
Tabs  
(Lances)  
Figure 22  
CHIMNEY 30° OFFSET THROUGH FLOOR  
OR CEILING  
Figure 25  
Note: For Canadian installations, all chimney  
installedoutsidethebuildingmustbeconstructed  
with galvalume (outer sections only) effective  
January 1, 1992. The appropriate model desig-  
nations are located in the back of this manual.  
Itmaybenecessarytoassemblethechimneyat  
30° when passing through the floor or ceiling  
area.UsetheF8FS30-2firestopspacerasshown  
in Figures 23 and 24. Support the chimney at  
floor or ceiling penetration with a FTF8 stabi-  
lizer if distance of chimney below ceiling is 10'  
or more. Maintain 2" minimum air space to  
combustibles from chimney sections.  
Figure 27  
Note: Assemble one component of chimney at a  
time (inner section first, then outer section last)  
beforeproceedingwiththenextcompletesection.  
Step 4. Note: Chimney sections are con-  
structed with a unique locking tab design,  
which ensures an immediate, tight assembly  
betweensections.Planyourchimneyrequire-  
ments carefully before assembly as chimney  
is difficult to disassemble after installation. If  
disassembled, the tabs might become dam-  
aged. Be certain tabs are properly formed to  
ensure locking tabs engage properly.  
Continue to assemble the chimney up through  
framed opening. Assemble just enough to pen-  
etrate the roof flashing openings (Figure 28 ).  
Always maintain 2" minimum air space to com-  
bustiblematerialsandalwayscheckeachchim-  
ney joint (inner and outer) to ensure proper  
engagement.Checkverticalalignmentofchim-  
ney so that it projects from the roof in true  
vertical position.  
Attic Space  
F8FS30-2  
Firestop Spacer  
2" Min.  
Air Space  
The Security FTF8 chimney system is a two  
piece chimney, which snap together from  
the fireplace up. Start with the inner flue  
section with the lanced end up, snap lock it  
in to the matching collar on top of the fire-  
place. At all subsequent joints, the upper  
flue section fits into the preceding flue sec-  
tion. Each piece snaps together by means of  
lockingtabs(9lockingtabsper joint). Check  
each piece by pulling up slightly from the top  
toensureproperengagementbeforeinstalling  
the next section.  
FTF8-S4 Stabilizer  
2" Min.  
Air Space  
10'  
Max.  
30° Firestop  
And Attic Above  
Figure 23  
1"* Min. Air Space  
To Combustibles  
Figure 28  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
9
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Security chimney sections do not need to be  
screwed together. Additional reinforcement is  
not necessary except in certain offset condi-  
tions (refer to page 14, Figure 39 ).  
Step 9. Security Chimneys locking bands,  
Model FLB, may be required if the chimney  
extends too high above the roof flashing. As a  
general rule, if thechimneyextendsmorethan  
6' above the roof flashing, the use of locking  
bands is advisable to strengthen the chimney  
assembly. Align the locking band at the chim-  
ney joint. Locking bands wrap around pipe  
joints equally covering the joints of both pipe  
sections. Use the nut provided and TIGHTEN  
snugly. Do not overtighten as this might dam-  
age the chimney section (refer to Figure 32 ).  
FTF8 Chimney  
Do Not Seal  
Flashing Spacers  
FTF8 Flashing  
Step 5. The height of vertical chimney pipe  
supported only by the fireplace must not ex-  
ceed 30'. Chimney heights above 30' must be  
supported by a Model FTF8-S4 stabilizer in-  
stalled at 30' intervals.  
Note: The Model FTF8-S4 adds 3" net effective  
height to the total chimney system.  
Figure 30  
Note: If chimney extends more than 8' above  
roofsurface, guywiresarealsorecommended.  
Use three (3) guy wires, attach to locking band  
assembly, extend and secure to roof in a trian-  
gular pattern (Figure 33 ). Guy wires are not  
supplied by the manufacturer.  
Note: Do not caulk or seal the ventilating  
openings.  
Install the Model FTF8-S4 stabilizer by fitting  
inner section down into respective section of  
proceeding flue pipe and locking outer stabi-  
lizer section into place over the outer chimney  
pipe. Position for proper clearance through  
framedopeningandnailstrapssecurely(under  
tension in shear) into place on framing. Use  
8d nails. Attach successive lengths of chimney  
pipe directly to stabilizer using same tech-  
niques as described in Step 4 (Figure 29 ).  
Step 7. Secure flashing by nailing along the  
perimeter into roof using 8d nails. If shingled  
roof, slideupperendandsidesofroofflashing  
undershingles(trimifnecessary), sealthetop  
and both sides of the flashing to the roof with  
roofcaulking.Covernailheadswithroofcaulk-  
ing (Figure 31 ).  
Roof Ridge  
120°  
Figure 33  
FTF8-S4 Stabilizer  
Step10.UsingaFTF8-CTDRoundTermination:  
Figure 29  
Figure 31  
1. Hold the FTF8-CTD over top of last chimney  
Note: Do not apply excessive pressure to any  
subsequent chimney sections following the  
stabilizer when installing. Ensure each subse-  
quent chimney section is securely attached by  
testing as noted in Step 4.  
Step 8. Slide the FTF8 storm collar (ordered  
separately)overouterchimney. Restonflash-  
ing spacers and align with top surface of  
flashing. Insert tab in slot, pull tight and bend  
tab back over slot. Seal storm collar to outer  
chimney with roof caulking or mastic around  
entire circumference of pipe. Also add extra  
roof caulking to the tab/slot area to seal com-  
pletely against water penetration (Figure 32 ).  
Check all joints very carefully to ensure no  
water intrusion can take place.  
section (Figure 34 ).  
2. Center inner slip section in inner flue pipe-  
slip down.  
3. Center outer locking section over outer flue  
pipe. Push down until locking tabs are firmly  
engaged.  
Step 6. Select the proper Security roof flash-  
ing based on pitch of roof. Use chart below for  
selection:  
Roof Pitch  
Model  
F8F6  
Flat to 6/12  
6/12 to 12/12  
F8F12  
Locking Band  
CTD  
Termination  
Chimney  
Next,slideroofflashingoverextendedchimney  
sectionthatpreviouslyhasbeeninstalledabove  
the roof opening in Step 4. FTF8 flashings  
require flashing spacers. Slide flashing all the  
way down until the flashing base rests flat on  
the roof (Figure 30 ). Again, check the vertical  
positionofthechimneyandthe2"minimumair  
space to combustibles.  
Waterproof  
Caulk  
Figure 34  
4. PullupslightlyonCTDtoensurelockingjoint  
has firmly engaged.  
Figure 32  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
10  
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Using a FTF8-CTDT Chase Termination:  
CTD  
TEN FOOT RULE SUMMARY  
18"  
Refer to specific installation instructions in-  
cluded with the FTF8-CTDT chase termination  
for clearance and installation details.  
The minimum chimney height above the roof  
and/ortoadjacentwallsandbuildingsisspeci-  
fied by all major building codes.  
18"  
CTDT  
Using a FTF8-CT1 Chase Termination:  
If the horizontal distance from the peak of the  
roof is less then 10', the top of the chimney  
must be at least 2' above the peak of the roof.  
CTDT  
Refer to specific installation instructions in-  
cluded with FTF8-CT1 chase terminations for  
clearance and installation details.  
24"  
24"  
If the horizontal distance from the chimney  
edge to the peak of the roof is more than 10' a  
chimney height reference point is established  
on the roof surface 10' horizontally from the  
chimneyedge. Thetopofthechimneymustbe  
at least 2' above this reference point. In all  
cases, the chimney cannot be less then 3'  
above the roof at the edge of the chimney.  
Using a FTF8-CT2 Chase Termination:  
Figure 36  
Refer to specific installation instructions in-  
cluded with FTF8-CT2 chase terminations for  
clearance and installation details.  
This suggestion is provided in the interest of  
betteroperation. Iftheterminationsarelocated  
too close to each other, smoke may migrate  
from one flue into the other.  
Using a FTF8-CTT Chase Termination:  
The 2' in 10' rule is necessary in the interest of  
safety but does not ensure smoke-free opera-  
tion. Trees, buildings, adjoining roof lines,  
adverse wind conditions, etc., may require a  
taller chimney should the fireplace not draft  
properly (see Figure 35 ).  
Refer to specific installation instructions in-  
cluded with FTF8-CTT chase terminations for  
clearance and installation details.  
FTF8 CHIMNEY COMPONENT  
CALCULATIONS  
The minimum installed height of the com-  
pleted fireplace system is 15' 0". The maxi-  
mum height is 60' 0".  
Using a FTF8-ATT Chase Termination:  
Refer to specific installation instructions in-  
cluded with FTF8-ATT chase terminations for  
clearance and installation details.  
MULTIPLE TERMINATIONS  
To determine the number of chimney sections  
and chimney components required, follow  
these steps:  
If more than one termination is located in the  
same chase or within the same general prox-  
imity, we suggest they should be separated in  
distance at least 24" horizontally from flue  
center to flue center and stacked or staggered  
vertically at least 18" apart, from the termina-  
tion of one smoke exit to the termination of  
another smoke exit (Figure 36 ).  
Note: It is recommended that all exterior ex-  
posed metal fireplace components; such as ter-  
minations, flashings, storm collars and/or flue  
be painted with a premium quality, high tem-  
perature, rust preventative paint designed for  
metal. This is especially important when instal-  
lationsaremadeinabnormallyadverseorcorro-  
siveenvironments;suchasnearlakes,oceansor  
in areas with consistently high humidity condi-  
tions. Consult the paint manufacturers instruc-  
tions for proper preparation and application.  
1. Determine total vertical height of the fireplace  
installation. This dimension is the distance from  
the surface the fireplace sets on to the point  
where smoke exits from the termination.  
2. Determine the number of chimney compo-  
nents required, except chimney sections. This  
wouldincludefirestopspacers,stabilizers,roof  
flashing, etc.  
3. The effective heights of the components are:  
Less Than 10'  
The Fireplace  
=
=
=
=
=
=
=
=
=
=
=
=
43-1/2"  
10-1/4"  
16-1/4"  
34-1/4"  
46-1/4"  
4"  
2' Min.  
FTF8-12  
FTF8-18  
3'  
FTF8-36  
Min  
10'  
3'  
Min  
FTF8-48  
FTF8-CTD Termination  
FTF8-CT1 Termination  
FTF8-CT2 Termination  
FTF8-CTDT Termination  
FTF8-CTT Termination  
FTF8-ATT Termination  
FTF8-S4 Stabilizer *  
12" to 18"  
15" to 23"  
12" to 18"  
6" to 14"  
8" to 14"  
3"*  
Figure 35  
* Required for every 30' of vertical chimney  
and/or 10' of offset chimney.  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
11  
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4. Determine amount of chimney height re-  
quired by subtracting total combined height of  
all pre-selected components (fireplace and  
chimneycomponentsfromtotaldesiredheight.)  
Step 2. Use Height of Chimney Only” column  
in The Vertical Elevation Chart to determine  
combinations of chimney used above return  
elbow to achieve desired heights. Reference  
Components Effective Height Chart in vertical  
elevation chart section.  
Step 3. Use Elevation Chart as job estimator  
only.Addnecessaryfirestopspacersandstabi-  
lizers as required. Firestop spacers must be  
used as shown in Figures 23 and 24 and  
stabilizers as shown in Figure 29.  
Reference Vertical Elevation Chart and deter-  
minethenumberofchimneysections(quantity  
and length) required.  
FTF8 VERTICAL ELEVATION CHART  
SPECIAL OFFSET INSTRUCTIONS  
Height Of  
Chimney Only  
Number Of FTF8  
Chimney Lengths  
Height Of  
Chimney Only  
Number Of FTF8  
Chimney Lengths  
To clear any overhead obstructions, you may  
offset your chimney system using Security's  
30° offset and return elbows. Use two elbows -  
anoffsetelbowtoinitiatetheoffsetandareturn  
elbow to terminate it. A 30° offset elbow, an-  
gling in any direction, may be the first compo-  
nent used off the top of the fireplace flue collar.  
Inches Feet/Inches 12" 18" 36" 48"  
Inches Feet/Inches 12" 18" 36" 48"  
386 ¹⁄₂  
390 ³⁄₄  
396 ³⁄₄  
404 ¹⁄₂  
414 ³⁄₄  
416 ¹⁄₂  
420 ³⁄₄  
426 ³⁄₄  
432 ³⁄₄  
437  
32 2 ¹⁄₂  
32 6 ³⁄₄  
33 0 ³⁄₄  
33 8 ¹⁄₂  
34 6 ³⁄₄  
34 8 ¹⁄₂  
35 0 ³⁄₄  
35 6 ³⁄₄  
36 0 ³⁄₄  
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
8
8
8
8
8
9
8
9
9
9
9
9
9
10  
9
11  
17  
0
1
1
2
2
3
4
4
5
5
6
6
7
8
8
9
9
9
11  
5
1
0
2
1
0
0
0
1
0
2
1
0
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
2
1
0
1
0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
0
0
0
0
1
0
1
0
0
0
0
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
0
0
0
0
0
1
0
1
1
1
1
1
2
1
2
2
2
2
2
2
3
2
3
3
3
3
3
3
4
3
4
4
4
4
4
4
5
4
5
5
5
5
5
5
6
5
6
6
6
6
6
6
7
6
7
7
7
7
7
7
8
7
8
21 ¹⁄₄  
27 ¹⁄₄  
35  
9 ¹⁄₄  
3 ¹⁄₄  
11  
11  
3 ¹⁄₄  
9 ¹⁄₄  
3 ¹⁄₄  
7 ¹⁄₄  
1 ¹⁄₄  
9 ¹⁄₄  
9 ¹⁄₄  
1 ¹⁄₄  
6 ¹⁄₂  
1 ¹⁄₄  
5 ¹⁄₂  
11 ¹⁄₂  
47  
51 ¹⁄₄  
57 ¹⁄₄  
63 ¹⁄₄  
67 ¹⁄₄  
73 ¹⁄₄  
81 ¹⁄₄  
93 ¹⁄₄  
97 ¹⁄₄  
102 ¹⁄₂  
109 ¹⁄₄  
113 ¹⁄₂  
119 ¹⁄₂  
127 ¹⁄₄  
137 ¹⁄₂  
139 ¹⁄₄  
143 ¹⁄₂  
149 ¹⁄₂  
155 ¹⁄₂  
159 ³⁄₄  
165 ³⁄₄  
173 ¹⁄₂  
183 ³⁄₄  
185 ¹⁄₂  
189 ³⁄₄  
195 ³⁄₄  
201 ³⁄₄  
206  
The offset and return elbows may be attached  
together, or a section or sections of chimney  
may be used between, but do not exceed 20' in  
total length between elbows. If sections of pipe  
exceed10' betweenelbows,achimneystabilizer  
must be used at the midpoint (Figure 37 ). The  
stabilizersupportstrapsmustbeattachedunder  
tension (in shear) to structural framing mem-  
bers above. When two sets of elbows are used,  
themaximumcombinedlengthofchimneyused  
between elbows cannot exceed 20' (Figure 38 ).  
Example: If C = 10' then C cannot exceed 10'.  
36  
5
443  
36 11  
450 ³⁄₄  
461  
37 6 ³⁄₄  
38  
5
462 ³⁄₄  
466 ³⁄₄  
472  
478 ³⁄₄  
483  
38 6 ³⁄₄  
38 10 ³⁄₄  
³⁄₄ 39 4³⁄₄  
39 10 ³⁄₄  
10  
10  
10  
10  
10  
10  
11  
10  
11  
11  
11  
11  
11  
11  
12  
11  
12  
12  
12  
12  
12  
12  
13  
12  
13  
13  
13  
13  
13  
13  
14  
13  
14  
14  
14  
14  
14  
14  
15  
14  
15  
15  
15  
15  
15  
15  
16  
15  
40  
40  
3
9
489  
10 7 ¹⁄₄  
11 5 ¹⁄₂  
11 7 ¹⁄₄  
11 11 ¹⁄₂  
12 5 ¹⁄₂  
12 11 ¹⁄₂  
13 3 ³⁄₄  
13 9 ³⁄₄  
14 5 ¹⁄₂  
15 3 ³⁄₄  
15 5 ¹⁄₂  
15 9 ³⁄₄  
16 3 ³⁄₄  
16 9 ³⁄₄  
496 ³⁄₄  
507  
508 ³⁄₄  
513  
519  
525  
41 4 ³⁄₄  
42  
42 4 ³⁄₄  
3
42  
43  
43  
9
3
9
1
2
529 ¹⁄₄  
535 ¹⁄₄  
543  
553 ¹⁄₄  
555  
44 1 ¹⁄₄  
44 7 ¹⁄₄  
If an offset exceeds 6' in length, each chimney  
joint beyond the first 6' of offset to the return  
elbow, must be secured by a No. 8 x 1/2" sheet  
metalscrewlocatedattheundersideofthejoint  
(Figure 39 ).  
45  
46 1 ¹⁄₄  
46  
3
3
559 ¹⁄₄  
565 ¹⁄₄  
571 ¹⁄₄  
575 ¹⁄₂  
581 ¹⁄₂  
589 ¹⁄₄  
599 ¹⁄₂  
601 ¹⁄₄  
605 ¹⁄₂  
611 ¹⁄₂  
617 ¹⁄₂  
621 ¹⁄₂  
627 ¹⁄₂  
635 ¹⁄₂  
645 ¹⁄₂  
647 ¹⁄₂  
651 ¹⁄₂  
657 ¹⁄₂  
663 ¹⁄₂  
667 ³⁄₄  
673 ³⁄₄  
681 ¹⁄₂  
691 ³⁄₄  
693 ¹⁄₂  
697 ³⁄₄  
703 ³⁄₄  
709 ³⁄₄  
714  
46 7 ¹⁄₄  
47 1 ¹⁄₄  
47 5 ¹⁄₄  
47 11 ¹⁄₂  
48 5 ¹⁄₂  
49 1 ¹⁄₄  
49 11 ¹⁄₂  
50 1 ¹⁄₄  
50 5 ¹⁄₂  
51 11 ¹⁄₂  
51 5 ¹⁄₂  
51 9 ¹⁄₂  
52 3 ¹⁄₂  
52 11 ¹⁄₂  
53 9 ¹⁄₂  
53 11 ¹⁄₂  
54 3 ¹⁄₂  
54 9 ¹⁄₂  
55 3 ¹⁄₂  
55 7 ³⁄₄  
56 1 ³⁄₄  
56 9 ¹⁄₂  
57 7 ³⁄₄  
57 9 ¹⁄₂  
58 1 ³⁄₄  
58 7 ³⁄₄  
59 1 ³⁄₄  
17  
17  
2
8
A 1/8" diameter hole must be drilled in the  
chimney joint using a 1/8" diameter drill. Hole  
should be drilled in center of joint overlap (Fig-  
ure 40 ). Be sure to drill only through the outer  
chimney casting. Do not puncture the inner flue.  
212  
219 ³⁄₄  
230  
231 ³⁄₄  
236  
18 3 ³⁄₄  
19  
19 3 ³⁄₄  
2
19  
20  
20  
21  
21  
22  
23  
23  
23  
24  
8
2
8
0
6
2
0
2
6
0
242  
248  
252  
258  
266  
276  
278  
282  
Maximum offset of chimney system is 30°.  
Two offsets must not be assembled to form a  
60° offset. However, two sets of offset and  
return elbows may be used on a single flue  
system,providedthetotalheightofthesystem  
exceeds 25'.  
288  
294 ³⁄₄  
298 ¹⁄₄  
304 ¹⁄₄  
312  
322 ¹⁄₄  
324  
24 6 ³⁄₄  
24 10 ¹⁄₄  
25 4 ¹⁄₄  
26  
26 10 ¹⁄₄  
27  
Return elbow support straps must be securely  
attached under tension (in shear) to structural  
framing members above. Do not substitute a  
FTF8-30 offset elbow in place of a FTF8-E30  
return elbow.  
0
0
328 ¹⁄₄  
334 ¹⁄₄  
340 ¹⁄₄  
344 ¹⁄₂  
350 ¹⁄₂  
358 ¹⁄₄  
368 ¹⁄₂  
370 ¹⁄₄  
374 ¹⁄₂  
380 ¹⁄₂  
27 4 ¹⁄₄  
27 10 ¹⁄₄  
28 4 ¹⁄₄  
28 8 ¹⁄₂  
29 2 ¹⁄₂  
29 10 ¹⁄₄  
30 8 ¹⁄₂  
30 10 ¹⁄₄  
31 2 ¹⁄₂  
31 8 ¹⁄₂  
59  
60  
6
0
OFFSET CALCULATIONS  
720  
727 ³⁄₄  
738  
739 ³⁄₄  
744  
60 7 ³⁄₄  
61  
61 7 ³⁄₄  
62  
6
Step 1. Use Offset Chart to determine amount  
of horizontal offset (A) and height (B) for vari-  
ous chimney section assemblies.  
0
12  
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A1  
OFFSET ELEVATION CHART  
A
Offset  
B
FTF8-ES30  
Number of FTF8 Chimney Sections  
Return  
Elbow  
Height Offset/Return FTF8-S4  
(Inches) (Inches)  
Elbow  
Stabilizer  
12"  
18"  
38"  
48"  
20'  
Max.  
4
15 ³⁄₄  
24 ¹⁄₂  
29 ³⁄₄  
33 ¹⁄₂  
38 ¹⁄₂  
43 ³⁄₄  
45 ¹⁄₄  
47 ¹⁄₂  
52 ¹⁄₂  
54 ¹⁄₄  
55 ³⁄₄  
57 ³⁄₄  
59 ¹⁄₄  
63  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
0
1
0
2
1
0
0
2
1
1
0
0
0
2
1
1
0
0
0
2
1
1
0
0
0
2
1
0
1
0
1
2
0
1
0
2
0
1
0
0
1
1
0
0
0
0
1
0
1
2
0
1
2
0
0
3
1
0
0
1
1
2
0
1
4
0
0
3
1
0
0
0
1
2
0
1
1
0
1
0
0
1
2
0
0
0
1
1
0
0
0
0
0
0
1
0
0
1
0
0
1
1
0
1
0
1
2
1
0
2
1
1
2
2
1
0
2
2
0
2
0
3
3
3
1
3
3
0
4
0
4
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
1
0
0
0
0
0
1
0
0
0
1
2
0
0
2
0
2
0
0
0
2
0
0
3
0
3
0
3
9
12  
B1  
Stabilizer  
14 ¹⁄₄  
17 ¹⁄₄  
20 ¹⁄₄  
21  
10' Max.  
Offset  
Elbow  
22 ¹⁄₄  
25 ¹⁄₄  
26 ¹⁄₄  
27  
28 ¹⁄₄  
29 ¹⁄₄  
31 ¹⁄₄  
32 ¹⁄₄  
34 ¹⁄₄  
35 ¹⁄₄  
37 ¹⁄₄  
38 ¹⁄₄  
39 ¹⁄₄  
41 ¹⁄₂  
43 ¹⁄₄  
44 ¹⁄₄  
45 ¹⁄₄  
46 ¹⁄₄  
48 ¹⁄₄  
49 ¹⁄₄  
50 ¹⁄₄  
51 ¹⁄₄  
54 ¹⁄₄  
55 ¹⁄₄  
64 ¹⁄₂  
68 ¹⁄₄  
69 ³⁄₄  
73 ¹⁄₄  
75  
Figure 37  
A2  
77  
80 ¹⁄₂  
83 ³⁄₄  
85 ¹⁄₄  
87 ¹⁄₂  
89  
C
2
B2  
A1  
91 ¹⁄₂  
94 ¹⁄₄  
95 ³⁄₄  
97 ³⁄₄  
103  
B1  
C
1
104 ¹⁄₂  
56 ¹⁄₂ 106 ¹⁄₂  
58 ¹⁄₄  
61 ³⁄₄  
64 ³⁄₄  
67  
109 ³⁄₄  
116  
121 ¹⁄₄  
124 ³⁄₄  
68 ³⁄₄ 128  
A2  
70  
130  
73  
135 ¹⁄₄  
138 ¹⁄₄  
145 ¹⁄₂  
147 ¹⁄₄  
150 ³⁄₄  
74 ³⁄₄  
79  
C
2
B2  
80  
A1  
82  
82 ¹⁄₄ 152  
B1  
C
1
Figure 38  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
13  
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Measure height to the ceiling from the top of  
fireplace-dimension B.” Use the appropriate  
Offset Elevation Chart to find dimension A.”  
Mark point where you will drive your nail to  
showthecenterpointforyouroffsetceilingcut.  
Note: The return elbow assembly performs the  
same function as a stabilizer. Consider this  
when determining the need for a stabilizer.  
Joints  
Note: Do not apply excessive pressure to any  
subsequent chimney section following return  
elbow assembly when installing. Ensure that  
each subsequent chimney section is securely  
attached by testing as noted above.  
Chimney  
Section  
Step2. ProceedbyusingtheStraightUpInstal-  
lation Instructions for cutting and framing ceil-  
ing and roof openings.  
4'  
y Joint Past 6'  
Screws Required At  
Ever  
Note:SeeFramingandDimensionChartforthe  
sizes of the ceiling and roof openings. The size  
of the roof opening varies with the degree of  
pitch of the roof.  
OPTIONAL EQUIPMENT  
CONSIDERATIONS  
No. 8 x 1/2" SMS  
6'  
Blower Kits (Circulating Models Only)  
No Screws Required In  
Joints For First 6' of Offset  
Offset Elbow Assembly  
Blower Kits model FBK-100/200 are available  
for use with circulating models. The Blower  
Kit can be installed prior to or after installation  
of the fireplace.  
Figure 39  
Offset elbows install the same as chimney  
sections. First, snap the inner section INTO the  
preceding inner section of flue. Check connec-  
tion by pulling up slightly to ensure a tight fit.  
Next, the outer sections snap lock OVER the  
preceding outer section of chimney. Again,  
check outer section by pulling up slightly to  
ensure proper connection is made.  
Note: These fireplace models require a wall  
switch for fan operation. Refer to the installa-  
tion instructions included with the Blower Kits  
for installation details.  
Underside Of Chimney  
THE FIREPLACE MUST BE WIRED TO THE  
HOUSE ELECTRICAL SYSTEM AT THE TIME  
OF INSTALLATION IN ORDER FOR THE OP-  
TIONAL FANS TO OPERATE, (SEE FIGURES  
43 AND 44 ).  
Return Elbow Assembly  
Figure 40  
Return elbows install the same way as round  
terminations and stabilizers:  
FTF8-E30 Return Elbow*  
Step 1. Hold return elbow over top of last  
chimney section.  
Note: The utilization of fans will increase the  
air flow around the firebox. However, only a  
minimal increase in heat output should be  
anticipated.  
Chimney Section (S)  
Step 2. Center inner slip section into inner flue  
pipe-slip down.  
POWER TO THE FIREPLACE  
The Optional Blower Kit  
Operates on 115 volt 60 Hz  
150 watts AC  
B
FTF8-30 Offset Elbow*  
Step3. Centerouter-lockingsectionoverouter  
chimneypipe.Pushdownuntillockingjointhas  
firmly engaged.  
A
HOUSE  
WIRING  
Step 4. Pull up slightly on return elbow to  
ensure locking joint has firmly engaged.  
Step 5. Secure support straps to framing  
members by nailing under tension in sheer  
(Figure 42 ).  
GROUND  
WIRE  
COVER PLATE  
*Part of Offset/Return Package Model FTF8-ES30  
Replace Cover Plate  
After Electrical  
Hook-Up  
House Wiring Must Be Secured  
With The Appropriate Electrical  
Connector To The Fireplace  
Convenience Outlet Wiring  
Figure 41  
INSTALLING OFFSETS  
Figure 43  
First, review the Offset Elevation Chart and  
Figure 41 for reference.  
THIS FIREPLACE IS NOT INTENDED TO BE  
USED AS A SUBSTITUTE FOR A FURNACE TO  
HEAT AN ENTIRE HOME. USE FOR SUPPLE-  
MENTARY HEATING ONLY.  
Return  
Elbow  
Step1.Determinetheoffsetdistancewherechim-  
ney is to pass through the first ceiling-dimension  
A.” To find this point on your ceiling, first deter-  
mine the center point for a vertical chimney fol-  
lowing the instructions for vertical installation.  
Figure 42  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
14  
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The unit has been tested for use with any  
unvented log sets having a maximum rating of  
26,000 BTU. The minimum mantle configura-  
tion for these log sets are outlined in Figures  
46 and 47.  
Log sets with 40,000 BTU may be installed  
provided that no combustible mantle projec-  
tions are placed lower than 18 inches from the  
fireplace opening.  
Combustion  
Air Actuator  
These fireplaces have been marked with a  
maximum rating of 26,000 BTU to assure that  
homeowners do not exceed the allowable lim-  
itsforallallowedinstallationsofmantles. That  
limit may be increased to 40,000 BTU, pro-  
vided that the mantle installed complies with  
the 18-inch limitation and a copy of these  
instructions are available.  
BLOWER THREE  
PRONGED PLUG TO  
GROUNDED OUTLET  
Figure 44  
Pull Forward to Open,  
Push Back to Close  
The FBK-100/200 Blower Kits are design cer-  
tified by Warnock Hersey for use with these  
appliances.  
Figure 45  
NEVER INSTALL AN UNVENTED GAS LOG  
SET WITH A BTU GREATER THAN 26,000 IF  
COMBUSTIBLE MANTLE PROJECTIONS ARE  
LOWER THAN 18 INCHES ABOVE THE FIRE-  
PLACE OPENING.  
Gas Line Connection  
Always check local building codes. Installation  
of the FBK Blower Kits must comply with local  
regulationsaswellastheNationalElectricCode.  
Install a 1/2" gas supply line through fireplace  
wall for connection to a decorative gas appli-  
anceinsidethefirebox. Outside,thegassupply  
line connects to a gas shut-off valve recessed  
flush into the wall or floor. The valve should be  
controlled by a removable valve key for safety.  
Combustion Air Kits  
CAUTION: WHEN USING THE DECORATIVE  
GAS APPLIANCE, THE FIREPLACE DAMPER  
MUSTBESETINTHEFULLYOPENPOSITION.  
These appliances are equipped with an outside  
(make-up) air door and integral actuator arm. If  
theapplianceistobeinstalledwithanoutsideair  
vent system, use only FireCraft Models FAOK-4  
or FAOK-4LD Combustion Air Kits. These kits  
comecompletewithdetailedinstallationinstruc-  
tions and all components necessary in complet-  
ing a combustion air vent system.  
CAUTION:PLUMBINGCONNECTIONSSHOULD  
ONLY BE PERFORMED BY A QUALIFIED, LI-  
CENSEDPLUMBER. MAINGASSUPPLYMUST  
BE OFF WHEN PLUMBING GAS LINE TO FIRE-  
PLACE OR PERFORMING SERVICE.  
Always plumb gas line installation per local  
codes. Check all connections and test for gas  
leaks, using a gas leak test solution (also  
referred to as bubble leak solution).  
Note: Usingasoapywater solution(50%dish  
soap, 50% water) is an effective leak test  
solution but it is not recommended, because  
the soap residue that is left on the pipes/  
fittingscanresultincorrosionovertime. Never  
use an open flame to check for leaks.  
If you’re installing a gas line, connect it before  
the fireplace is framed and enclosed in the  
finished wall. The gas knockout is determined  
by the indentation located at the bottom and  
slightly off center in the side refractories. THE  
KNOCKOUT IS ALWAYS REMOVED FROM IN-  
SIDE THE FIREPLACE. DO NOT REMOVE THE  
KNOCKOUT UNLESS YOU ARE INSTALLING A  
GAS LINE. If removal is attempted from the  
outer wrapper, side refractory damage may  
occur. With a medium-sized hammer, lightly  
tap the surface of the indentation. The refrac-  
torymaterialisverythininthisareaandiseasily  
removed. Once a small hole has been made,  
continue tapping until you have reached suffi-  
cientdiameterforthegaslinetofitthrough.The  
entire knockout does not have to be removed.  
Remove insulation in the gas line channel.  
After completing the installation of the optional  
combustion air vent system the actuator arm  
must be put in service and tested to ensure  
proper operation before completing any enclo-  
sure around the firebox. Failure to do so may  
result in extensive and costly rework.  
This provision is intended for connection to a  
decorative gas appliance incorporating an au-  
tomaticshut-offdeviceandcomplyingwiththe  
Standard for Decorative Gas Appliances for  
installation in vented fireplaces, ANSI Z21.60  
(1991) or American Gas Association draft re-  
quirementsforGas-FiredLogLightersforWood  
Burning Fireplaces, Draft No. 4 dated August,  
1993. Install in accordance with the National  
Fuel Gas Code, ANSI Z223.1. This complies  
with the revised U.L. 127 standard.  
Locate the actuator arm along the right side of  
the appliance firebox opening and refer to  
Figure 45.  
To operate, push the end of the actuator to the  
left as shown in Figure 45, until it "pops" free of  
its "locked" position. Pull the actuator forward  
to open the combustion air door, and push it  
backtoclose. To"lock"thecombustionairdoor  
closed, ensure the actuator is pushed all the  
way back then push the end of the actuators to  
the right until the step in the actuator moves  
behind the appliance front face within the slot-  
ted opening.  
Vent Free Appliances  
IMPORTANT:REPACKINSULATIONMATERIAL  
IN SQUARE HOLE AROUND GAS LINE, INTE-  
RIORANDEXTERIOROFFIREPLACE, TOSEAL.  
This unit has been tested and approved to  
ANSI/IAS/AGAZ21.11.2forusewithunvented  
gas appliances and complies with the stan-  
dardforFactory-Builtfireplaces,UL127,when  
installed with unvented gas log sets. Special  
instructions with regards to mantle installa-  
tions must be taken into consideration when  
installing such appliances.  
Operate the actuator through several cycles  
including the "lock position. Ensuring proper  
operation and freedom of movement. Return  
the actuator arm to the locked position.  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
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Thesefireplacesmaysit directlyonacombus-  
tible surface. A 2" air space is required be-  
tween combustible framing and the chimney.  
A1"airspaceisrequiredbetweencombustible  
framingandfireplaceouterwrapper. InCanada,  
the minimum height for a combustible mantel  
is 18" (457 mm) above the fireplace opening.  
Figure 46 shows typical Canadian installa-  
tions. For installations other than Canada,  
combustible mantels and trim may be in-  
stalled 12" above the fireplace opening as per  
NFPA 211, Section 7-2.3.3. and Figure 47. If  
a mantel is of a noncombustible material, it is  
exempt from these requirements as long as it  
does not interfere with the installation or op-  
eration of glass doors.  
Glass Doors  
Hearth Extensions and Wall Shields  
If glass doors are to be installed on these  
fireplaces, refer to specific installation instruc-  
tions packed with the glass doors. Use only the  
doors that are listed for use with these fire-  
places. Use of other non-listed glass door on  
these fireplaces may constitute a potential fire  
hazard and is not recommended.  
A hearth extension must be installed with  
all fireplaces. It is to protect the combustible  
floor in front of the fireplace from both radiant  
heat and sparks. The hearth extension must  
extend 8" beyond both sides of the fireplace  
opening and 16" beyond the front (see Figure  
48 ). Use a hearth extension constructed of a  
durable noncombustible material having an  
equal or better (lower k value) insulating value  
CAUTION: CERTAIN GLASS DOORS OVERLAP  
THE BLACK METAL FACING OF THE FIRE-  
PLACE. IF THE FIREPLACE HAS BEEN FACED  
WITHNONCOMBUSTIBLEMATERIALS, THERE  
MIGHT NOT BE SUFFICIENT CLEARANCE TO  
INSTALL THE GLASS DOORS OF YOUR  
CHOICE. ENSURE ADEQUATE CLEARANCE IS  
MAINTAINED AT ALL TIMES SO AS NOT TO  
INTERFERE WITH THE INSTALLATION AND  
OPERATION OF GLASS DOORS.  
2
of k = 1.28 BTU IN/FT HR °F or a thermal  
resistance that equals or exceeds r = 0.78 HR  
2
°F FT /BTU IN. With these values, determine  
the minimum thickness/material required us-  
ing the formula and Page 17.  
Finished  
Note: Any noncombustible material whose k  
value is less than 1.28 or whose r value is more  
than 0.78 is acceptable.  
Header  
Wall  
8" Max.  
(203mm)  
COLD CLIMATE INSULATION  
If the fireplace is installed on a combustible  
floor, use the metal safety strips (provided)  
on the floor extending half under the fire-  
place and half under the hearth extension  
(refer to Figures 6 & 7).  
If you live in a cold climate, it is especially  
important to seal all cracks around the fire-  
place opening with noncombustible material  
and wherever cold air could enter the room.  
Surrounding materials must be caulked where  
it meets the black metal facing of the fireplace  
to avoid cold air intrusion. Use noncombus-  
tible caulking material only on fireplace facing  
to seal. Also, the outside air inlet duct should  
bewrappedwithnoncombustibleinsulationto  
minimize the formation of condensation. Do  
not place insulation materials on top of fire-  
place or against chimney sections.  
Combustible  
Mantel  
Spacer  
18" Min.  
(457mm)  
A wall shield is required where a continuous  
perpendicular side wall is within 12" of the  
fireplace opening (Figure 49 ). Use a 24" W x  
30" H wall shield constructed of a durable,  
noncombustible material having an equal or  
better (lower k value) insulating value than k =  
Fireplace  
Opening  
2
.54 BTU IN/FT HR °F. At no time may a  
Canadian Installation  
perpendicular side wall be located closer  
than 8" from the fireplace opening.  
Figure 46  
Note: A 2" air space must be preserved for all  
combustible materials extending for any con-  
tinuous length adjacent to the chimney.  
If fireplace is installed diagonally across a 90°  
corner; no wall shields are required.  
Finished Wall  
Header  
1 1/2"  
12"  
Max.  
It is especially important to insulate between  
the studs of an outside chase cavity and under  
the floor if the floor is above ground level. Do  
not place insulation directly against the fire-  
place or chimney system.  
Combustible  
Mantel  
and Trim  
FIREPLACE FINISHES  
Mantels and Trim  
Spacer  
12"*  
Min.  
8 3/8"*  
It is sometimes best to frame your fireplace  
after it is positioned and the chimney is in-  
stalled. Frame enclosure for chimney and fire-  
place with 2 x 4’s (or heavier) lumber.  
Fireplace  
Opening  
Note:Theheadermayrestonthetwo(2)metal  
top spacers on top of the unit but the header  
must not be notched to fit around the spacers.  
*Both Of These Dimensions Must Be At Least 18”  
When An Unvented Gas Log Set Rated At 26,000  
BTU Or Higher Is Used. (Maximum 40,000 BTU)  
Typical Installation  
Figure 47  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
16  
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Hearth Extension Dimensions  
A
B
C
D
16"  
33"  
8"  
49"  
C
C
B
D
Note: To convert inches to millimeters  
divide by 0.03937  
A
Figure 48  
Answer - The minimum required thickness of the Micore 160 is .273” ,  
therefore round up to 1/4” and use the nearest standard thickness available  
which is 1/2” .  
Methods of Determining Hearth Extension and Wall Shield  
Equivalents - To determine the thickness required for the alternate  
material when either the “ k” value or “ r” value is known, use either the  
k formula or r formula.  
Listed Material  
Example:IfMicore160istobeusedforthehearthextensionfireplace,how  
k (per inch) r (per inch)  
Listed Min.Thickness  
thick must this material be?  
1.28  
Listed Material  
0.78  
rL  
1
T
"
KL  
L
kM = k value per inch of alternate material  
rM = r value per inch of alternate material  
** Approved Alternate Materials for Floor/Hearth Protection  
AlternativeMaterials  
Thermal Values  
MinimumThickness  
TM = minimum thickness required for alternate material  
(rounded to nearest 1/8 inch)  
T = standard thickness of the alternate material  
S
k (per inch) r (per inch)  
Min. Thickness  
KM  
rM  
TM  
kL = k value per inch of listed material  
rL = r value per inch of listed material  
Kaowool M Board  
.47  
.35  
2.13  
2.86  
.37" (3/8")  
.27" (1/4")  
T = minimum thickness of listed material  
Micore 160™  
U.S. Gypsum  
L
Micore 300™  
U.S. Gypsum  
.46  
2.17  
.52  
.36" (3/8")  
Note: An asterix “*” indicates, it is a value taken from Table 1.  
Using the k formula:  
Durock™ Cement Board  
U.S. Gypsum  
1.92  
1.50" (1-1/2")  
Minimum  
thickness of  
alternate  
k-value (per Inch) of  
alternate material (kM) x  
k-value (per inch)  
Specified min.  
thickness  
of listed  
=
Hardibacker™  
1.95  
2.30  
2.82  
.513  
.435  
.355  
1.52" (1-1/2")  
1.80" (1-3/4")  
2.20" (2-1/4")  
Hardibacker 500™  
material (TM)  
of listed material (kM)  
material (T )  
L
Cultered Stone Hearth-  
stone™  
TM (inches)  
TM (inches)  
=
=
kM  
*1.28  
x
T
L
Wonderboard  
3.23  
.61  
.31  
2.52" (2-1/2")  
0.48" (1/2")  
Super Firetemp M  
Johns-Manville  
1.64  
*.35  
*1.28  
x
x
1"  
1"  
Super Firetemp L  
Johns-Manville  
.54  
1.85  
0.42" (3/8")  
.273 (inches) =  
.273  
Face brick  
9.00  
5.00  
5.00  
12.5  
11.0  
.111  
.20  
.20  
.08  
.09  
7.03" (7")  
3.91" (3-7/8")  
3.91" (3-7/8")  
9.77" (9-3/4")  
8.59" (8-5/8")  
Common brick  
Cement mortar  
Ceramic tile  
Marble  
Answer - The minimum required thickness of the Micore 160 is .273,  
therefore round up to 1/4” and use the nearest standard thickness  
available which is 1/2.  
Using the r formula:  
Table 1  
Minimum  
thickness of  
alternate  
material  
r-value (per Inch)  
of listed material  
r-value (per inch)  
of alternate material  
Specified min.  
thickness  
of listed  
=
x
** If the hearth extension material(s) that is intended to be used is NOT listed  
on Table 1, the material can still be used if the material(s) is noncombustible.  
However, the manufacturer of the material must provide either the listed k-  
value per inch or r-value per inch with listed thickness so that the minimum  
thickness required for the hearth can be calculated (per instructions on this  
Page and/or as specified in the NFI Certification manuals).  
material  
TM (inches)  
TM (inches)  
=
=
rL  
rM  
x
x
x
T
L
Note:AlsoseeNFI(National FireplaceInstitute)CertificationManualsshowing  
other acceptable calculation methods and acceptable alternate materials  
which can be used.  
*0.78  
*2.86  
1"  
1"  
.273 (inches) =  
.273  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
17  
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The sum of all R values” is: .70 + .10 +. 038  
+ .10 = .938  
Wall Shield Required  
Where Less Than 12"  
This would be an acceptable combination of  
material for the hearth extension since the  
totalcalculated“Rvalue” ofthematerialsused  
exceeds the required R value” of 0.78. An  
additional layer of insulating materials is not  
needed.  
24"  
5 1/2"  
30"  
Note: Also see NFI Certification Manuals for  
expanded explanation on calculating R val-  
ues” when multiple materials are used.  
2"  
C
Max. Thickness Of Hearth Extension When  
Circulating Models Are On The Floor  
B
D
C
A
WARNING: THE CRACK BETWEEN THE  
FIREPLACE AND THE HEARTH EXTEN-  
SION MUST BE SEALED WITH A NON-  
COMBUSTIBLE MATERIAL.  
Figure 51  
Figure 49  
Secure the hearth extension to the floor to  
prevent possible shifting.  
Calculating Minimum Thickness if Multiple  
Materials are Used  
FINISH TO YOUR TASTE  
WARNING: WHEN INSTALLING HEARTH  
EXTENSION IN FRONT OF A NON-CIRCU-  
LATING FIREPLACE MODEL, THE FIRE-  
PLACE MUST BE RAISED IF HEIGHT OF  
HEARTH EXTENSION EXCEEDS 7" ABOVE  
THEBOTTOMOFFIREPLACE(FIGURE50).  
At times it is important to know what  
combination of materials are acceptable for  
use as floor protection. The R values” are  
usedtodetermineacceptablecombinationsof  
materialsbecauseRvalues” areadditivewhere  
r and k values are not.  
There are a wide variety of finished looks” for  
these fireplaces, from formal wall decor with  
elaborate mantels to rustic wood paneling or  
warm brick facings.  
Only noncombustible materials like stone, tile,  
brick, etc., may overlap the black front facing.  
Donotextendthesematerialsbeyondtheblack  
facing and into the firebox area. Be sure not to  
interfere with the installation and operation of  
glass doors or block the upper or lower grilles.  
Sealalljointsbetweentheblackfacingandwall  
surrounds to prevent air intrusion. Use non-  
combustible caulking material only to seal the  
black metal facing to the surround material on  
the finished wall.  
“ Rvalue” = 1/k = “ r” xthicknessofmaterial  
used  
Example: Given that the required R value”  
for a suitable floor protector used must be  
equal to or greater than:  
R” = rL x T = 0.78 x 1” = 0.78.”  
L
7"  
If it is desired to elevate a marble hearth ex-  
tension to a level of 5” or more above the floor  
surface. What combination of noncombus-  
tible materials can be used to accomplish this?  
Max. Thickness Of Hearth Extension When  
Non-Circulating Models Are On The Floor  
Combustible materials may project beyond the  
sides of the fireplace opening as long as they  
are kept within the shaded areas illustrated in  
Figure 52.  
Figure 50  
If common brick is used so that the 3 1/2”  
dimension is the height, Rfor the common  
brick becomes:  
WARNING: WHEN INSTALLING THE  
HEARTH EXTENSION BE CAREFUL NOT  
TO BLOCK THE HEAT-CIRCULATING AIR  
INLETGRILLONCIRCULATINGMODELS.  
Combustible  
Materials  
brick  
Fireplace  
Allowed In  
RM = rM x TS = 0.20 x 3 1/2" = .70  
Shaded Area  
Safe Zone”  
1"  
9"  
Using 1/2” of mortar to set the brick, Rfor  
the mortar is calculated as follows:  
mortar  
WARNING: WHEN INSTALLING HEARTH  
EXTENSION IN FRONT OF A CIRCULAT-  
INGFIREPLACEMODEL, THEFIREPLACE  
MUST BE RAISED IF HEIGHT OF HEARTH  
EXTENSIONEXCEEDS2"ABOVEBOTTOM  
OF FIREPLACE (FIGURE 51 ).  
45°  
12"  
Min. Distance To  
Protected Side Wall  
RM = rM x TS = 0.20 x 1/2" = .10  
9"  
Min. Distance To  
Unprotected Side Wall  
Next, a 3/4" marble slab set in 1/2" mortar cov-  
ers the brick, “Rfor the marble and mortar  
becomes:  
12"  
Figure 52  
marble  
RM = rM x TS = 0.05 x 3/4" = .038  
mortar  
RM = rM x TS = 0.20 x 1/2" = .10  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
18  
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INSTALLATION COMPONENTS  
The following items are available for use in the  
installation of this appliance.  
(FBK-200 Models Only)  
Firestop Spacer (30°)  
63L32  
F8FS30-2  
Forced Air Blower Kits  
-Single Speed  
-Variable Speed  
80L84  
80L85  
FBK-100  
FBK-200  
Chimney Section  
63L10  
63L13  
63L14  
63L15  
FTF8-12  
FTF8-18  
FTF8-36  
FTF8-48  
Canadian  
Chimney Section  
62L92  
62L93  
FTF8-18C  
FTF8-36C  
Offset/ Return  
Package (30°)  
63L22  
FTF8-ES30  
63L38  
63L39  
F8F6  
F8F12  
Flashing  
Outside Combustion Air Kits  
Stabilizer  
63L25  
FTF8-S4  
(with duct)  
81L87  
81L88  
FOAK  
FOAK-LD  
(without duct)  
Chase Termination  
96L20  
FTF8-CTT  
Storm Collar  
63L59  
63L60  
63L31  
FSC  
Combination  
Offset/Return Elbow  
63L28  
FTF8-OR15  
Chase Termination  
96L22  
FTF8-ATT  
Locking Band  
FLB  
Shipping Weight  
175 lbs.  
Firestop Spacer (Flat)  
F8FS-2  
Attic Shield Assembly  
63L67  
FTF8-FSAS  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
19  
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INSTALLATION COMPONENTS  
Chase Termination  
(Square)  
63L51  
FTF8-CT2  
Cold Climate Kit  
63L62  
FTF8-CCK2-LD  
Round Termination  
63L42  
FTF8-CTD  
Chase Termination  
(Square)  
Chase Termination  
(Round)  
63L48  
FTF8-CT1  
63L45  
FTF8-CTDT  
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.  
The manufacturer reserves the right to make changes at any time, without notice, in design,  
materials, specifications, prices and also to discontinue colors, styles and products.  
Consult your local distributor for fireplace code information.  
Printed in U.S.A. © 2007 by LENNOX HEARTH PRODUCTS  
1110 West Taft Avenue  
Orange, CA 92865  
P/N 850,046M REV. A 12/2008  
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