INSTALLATION
INSTRUCTIONS
MERIT® SERIES
42" Wood Burning Fireplaces
P/N 850,047M REV. B 12/2008
MODELS
RDI-42
HCI-42
RDI-42-H
HCI-42-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.
Portland
OMNI Report No. 116-F-52-2
US
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 spe-
cific 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.
The most important areas of concern dealing
withtheinstallationoffactory-builtfireplacesare
clearances to combustible materials, proper as-
sembly of component parts, height of the chim-
ney system, the proper use of accessories sup-
plied by the manufacturer and the techniques
employed in using finishing materials applied to
the wall surrounding the fireplace, hearth exten-
sions and wall shields. 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.
These fireplaces have been tested and
listed by Omni-Test Laboratories (Report
No. 116-F-52-2) to U.L. standard 127.
These units are intended for installation
in residential homes and other buildings
of conventional construction including
commercial, not in mobile homes.
When complete these fireplace systems con-
sists of four 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 instal-
lation in Canada to ULC-S610. For installa-
tions in Canada, the chimney clearance to
combustibles 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.
INTRODUCTION
General Information
These fireplace systems are designed for
installation in accordance with the National
Fire Protection Standard for chimneys, fire-
places and solid fuel burning appliances;
NFPA 211 and in accordance with codes
such as the BOCA Basic/National Codes, the
Standard Mechanical Code and the Uniform
Building Codes.
These fireplaces are conventional radiant heat
fireplaces with standard bar grates, optional
outside combustion air kits and optional deco-
rative glass doors.
The "C" models are designed as heat circulating
fireplacesandmaybefittedwithaccessoryfans.
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
Chimney Height
LOCATION OF FIREPLACE
Insulate Joists
Same As Ceiling
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
Whenlocatingthefireplace,considerationmust
be given to combustibles and final finishing.
See Figure 5 and confine the final location of
combustiblefinishmaterialstothe"SafeZone".
Insulation
(Thermal Barrier)
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.
Figure 5
Combustion
Air Actuator
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.
4
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
Spacers
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
later attachment of optional blower.
Metal Safety Strip
Floor
4. Use this information and consult your local
building code to determine if you need addi-
tional support.
4. Install optional outside combustion air kit.
Note: Hearth extensions must not interfere with
circulating grillwork
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.
Top
Spacers
6. Complete the installation, finish wall mate-
rial, surround and hearth extension to your
individual taste.
Maintain
1" (25 mm)
Air Space
At Back
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“Z” typesafetystripshouldbe
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
FIREPLACE SPECIFICATIONS
12-1/2"
(318 mm)
8-3/8"
(213 mm)
16-5/16"
(414 mm)
1-1/2"
Metal Safety Strips
41"
(1041 mm)
46-3/8"
(1178 mm)
40-1/2"
22-5/16"
2-7/8"
(73 mm)
Figure 8
(1029 mm)
(566 mm)
7-3/4"
(197 mm)
Blocking
46-3/4"
(1187 mm)
Front
Fireplace Top Spacers
1/2"
(13 mm)
Metal Safety Strips
Figure 9
Combustion
Air Inlet
9-7/8"
(251 mm)
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.
Gas Line
Access
46-3/8"
(1178 mm)
41-3/8"
(1051 mm)
10"
(254 mm)
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.
40-1/2"
(1029 mm)
Gas Line
Access
17-5/16"
(439 mm)
13-5/8"
(346 mm)
Junction
Box
23-1/2"
(597 mm)
22-7/8"
(581 mm)
Note: The framed depth, 23-7/8" (606 mm)
from a framed wall, must always be measured
from a finished surface. If a wall covering such
asdrywallistobeattachedtotherearwall,then
the 23-7/8" (606 mm) must be measured from
the drywall surface. It is important that this
dimension be exact.
Left Side
Right Side
31-9/16"
(802 mm)
Fireplace
Top Spacer
8-1/2"
(216 mm)
23-1/2"
(597 mm)
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed.
12-1/2"
(318 mm)
1-3/4"
(44 mm)
The header may rest on the top metal spacers,
but must not be notched to fit around them.
46-3/4"
(1187 mm)
50-1/4"
(1276 mm)
Consult all local codes.
Top View
Figure 10
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
6
FRAMING SPECIFICATIONS
Framing Dimensions
C
D
A
B
C
D
E
F
49"
1245 mm
Back Wall of
Chase/Enclosure
Including Finising
Materials
FOAK Combustion
Air Kit - Optional
46-1/2" 1181 mm
if any
33"
17-1/2" 445 mm
81" 2057 mm
40-3/8" 1026 mm
838 mm
J
F
Header
A
E
G
H
J
24"
23"
607 mm
584 mm
Rough
Framing Face
(Unfinished Shown)
B
Corner Installation
57-1/4" 1454 mm
Figure 14
Note: All framing dimensions calcu-
lated for 5/8" nailing flange depth and
1/2" dry wall at the fireplace face. If
sheathing the chase or finishing with
otherthicknessmaterials,calculations
will need to be made.
A
Fireplace Framing
Figure 11
Note: A, C and G dimensions include
1" clearance to combustibles.
Back Wall of Chase/Enclosure
Including Finising Materials if any
FOAK Combustion
Air Kit
Framing Dimensions for Ceiling
B
Flue Type
A
B
A
G
Ceiling Framing
FTF8 Vertical
16-1/2"
16-1/2"
(419 mm) (419 mm)
A
Rough
Framing Face
(Unfinished Shown)
Figure 15
FTF8 Offset 30° 16-1/2"
27"
Inside Chase
(419 mm) (686 mm)
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"
16-1/2"
G
H
(419 mm)
(419 mm)
A
6/12
16-1/2"
19"
C
Rough
(419 mm)
(483 mm)
D
Framing Face
Outside Chase
(Unfinished Shown)
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.
7
Step 4. Fireplace should be secured to side
framing members using the nailing tabs at the
top and bottom of the fireplace front face. Use
8d nails or equivalent (Figure 17 ).
Step 7. Route the Class 0 metallic air duct out
thebackwallorsidewall,upthroughtheceiling
or floor joists to an outside wall. The air duct’s
inlet should be located above any anticipated
snow level.
Note: If the fireplace is installed against an
inside wall, the Class 0 metallic air duct may be
extendedintoaventilatedatticspaceatleast18"
(457 mm) above the attic floor. Secure the duct
hood to a vertical post with the inlet positioned
downward.Ensurethatnothingblocksthehood
opening. This air duct must never terminate
higher than the fireplace chimney.
8d Nail Or
Equivalent
Step 8. Cut or frame a hole through the outside
wall for the installation of the duct inlet hood. A
6-1/2" (165 mm) diameter hole is required.
Feed the loose end of the flexible duct through
the hole cut for the inlet hood and attach to the
collaroninlethoodusingtwo(2)screws.Insert
the hood into the opening. Secure in place with
nails driven through the holes in hood flange.
Seal with noncombustible waterproof silicon
type caulking. If additional air duct is needed,
use Class 0 metallic duct.
Figure 19
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
sidestoholdfirestopspacerinposition. Fasten
permanently, using at least two (2) more 8d
nailsorequivalent,afterchimneysectionshave
been assembled through the firestop spacer
andafteranynecessaryadjustmentshavebeen
made. Firestop spacer must be secured by at
least four (4) 8d nails or equivalent when com-
pletely installed.
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
least 1" clearance from the firebox wrapper to
the framing at the closest point of contact,
directly adjacent to the flange.
INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
ofthedamper, asdescribedonpage4, (referto
Figure 3 ).
For Canadian Installations Proceed
with Steps 5 through 8
Step 5. Attach the cold climate kit, Model
CCK-HCRD, around the chimney collar with
the screws provided (see Figure 18 ).
Step 2. Using standard construction framing
techniques,constructopeningforchimneyroute
upthroughtheceiling(s)androoforthroughan
outside chase.
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 20 and 21 ).
Note: CCK-HCRD model requires a 6" diameter
Class 0 metallic air duct, acquired locally by
installer.
Framing must maintain adequate minimum air
space clearance at all times.
Chimney Duct
Duct Collar
CAUTION: ALLOW MINIMUM 2" CHIMNEY
AIRSPACETOCOMBUSTIBLEFRAMINGMEM-
BERS THROUGHOUT VERTICAL OR OFFSET
CHIMNEY INSTALLATION.
Room Above
Front Cover
Plate “ A”
A minimum 2" air space must be reserved for
all combustible materials extending for any
continuous length surrounding the chimney.
Firestop Spacer
ReferenceFigures15and16 andchartsFram-
ing Dimensions for Ceiling and Roof, which
specify minimum ceiling and roof dimensions.
Figure 20
Front Cover
Plate “ B”
Attic Above
Front Cover Plate “ A”
Knockout
In new construction, to determine chimney cen-
terline,useplumblinefromrooforceilingabove
fireplace to center of flue collar on fireplace.
Figure 18
Step 6. Connect the 6" (152 mm) Class 0
metallic air duct to the collar on the chimney
collar enclosure with the screws provided in
the hardware kit.
For remodeling, plumb to center of flue collar
from ceiling above, drive nail through ceiling
frombelowtomarkposition,thenmarkandcut
to passage from above ceiling (around nail)
(see Figure 19 ). Then plumb from ceiling or
roof level directly above hole which has just
been completed.
Firestop Spacer
Figure 21
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
8
Step 4. Note: Chimney sections are con-
structed with a unique locking tab design,
which ensures an immediate, tight assembly
between sections. Plan your chimney require-
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.
Note: Assemble one component of chimney at
a time (inner section first, then outer section
last) before proceeding with the next complete
section.
CHIMNEY 30° OFFSET THROUGH FLOOR
OR CEILING
Itmaybenecessarytoassemblethechimneyat
30° when passing through the floor or ceiling
area. Use the F8FS30-2 firestop spacer as
shown in Figures 22 and 23. Support the
chimney at floor or ceiling penetration with a
FTF8 stabilizer if distance of chimney below
ceiling is 10' or more. Maintain 2" minimum air
space to combustibles from chimney sections.
Continue to assemble the chimney up through
framed opening. Assemble just enough to pen-
etrate the roof flashing openings (Figure 27 ).
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.
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 fireplace. At all
subsequent joints, the upper flue section fits
into the preceding flue section. Each piece
snaps together by means of locking tabs (9
locking tabs per joint). Check each piece by
pullingupslightlyfromthetoptoensureproper
engagement before installing the next section.
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 25 ).
Attic Space
F8FS30-2
Firestop Spacer
2" Min.
Air Space
FTF8-S4 Stabilizer
2" Min.
Air Space
10'
Max.
30° Firestop
1"* Min. Air Space
To Combustibles
And Attic Above
Figure 22
Figure 27
Room Above
Security's 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 38 ).
F8FS30-2
Firestop Spacer
2" Min.
Air Space
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.
2" Min.
Air Space
FTF8-S4 Stabilizer
30° Firestop
10'
Max.
And Room Above
Note: The Model FTF8-S4 adds 3" net effective
height to the total chimney system.
Figure 23
Figure 25
For Canada Only
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 26 ).
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 28 ).
Wheninstallingthechimneysystemthroughan
open attic space, the attic shield assembly-
firestop spacer must be used (Figure 24 ). This
installation is required only for use in Canada.
Open Attic Space
Locking
Tabs
(Lances)
Figure 24
Figure 26
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.
FTF8-S4 Stabilizer
Figure 28
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
9
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) over outer chimney, rest on flash-
ing spacers and align with top surface of flash-
ing. Insert tab in slot, pull tight and bend tab
back over slot. Seal storm collar to outer chim-
ney with roof caulking or mastic around entire
circumference of pipe. Also add extra roof
caulking to the tab/slot area to seal completely
against water penetration (Figure 31 ). Check
all joints very carefully to ensure no water
intrusion can take place.
Step10.UsingaFTF8-CTDRoundTermination:
1. Hold the FTF8-CTD over top of last chimney
section (Figure 33 ).
2. Center inner slip section in inner flue pipe-
slip down.
Step 6. Select the proper Security roof flash-
ing based on pitch of roof. Use chart below for
selection:
3. Center outer locking section over outer flue
pipe. Push down until locking tabs are firmly
engaged.
Roof Pitch
Model
F8F6
Flat to 6/12
6/12 to 12/12
F8F12
Locking Band
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 29 ). Again, check the vertical
positionofthechimneyandthe2"minimumair
space to combustibles.
Waterproof
Caulk
CTD
Termination
Chimney
Figure 33
4. PullupslightlyonCTDtoensurelockingjoint
has firmly engaged.
Figure 31
FTF8 Chimney
Do Not Seal
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 31 ).
Using a FTF8-CTDT Chase Termination:
Flashing Spacers
FTF8 Flashing
Refer to specific installation instructions in-
cluded with the FTF8-CTDT chase termination
for clearance and installation details.
Using a FTF8-CT1 Chase Termination:
Figure 29
Refer to specific installation instructions in-
cluded with FTF8-CT1 chase terminations for
clearance and installation details.
Note: Do not caulk or seal the ventilating open-
ings.
Using a FTF8-CT2 Chase Termination:
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 32 ). Guy wires are not
supplied by the manufacturer.
Step 7. Secure flashing by nailing along the
perimeterintoroofusing8dnailsorequivalent.
If shingled roof, slide upper end and sides of
roof flashing under shingles (trim if neces-
sary),sealthetopandbothsidesoftheflashing
to the roof with roof caulking. Cover nail heads
with roof caulking (Figure 30 ).
Refer to specific installation instructions in-
cluded with FTF8-CT2 chase terminations for
clearance and installation details.
Using a FTF8-CTT Chase Termination:
Roof Ridge
Refer to specific installation instructions in-
cluded with FTF8-CTT chase terminations for
clearance and installation details.
Using a FTF8-ATT Chase Termination:
Refer to specific installation instructions in-
cluded with FTF8-ATT chase terminations for
clearance and installation details.
120°
Figure 32
Figure 30
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
10
To determine the number of chimney sections
and chimney components required, follow
these steps:
Less Than 10'
2' Min.
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.
3'
Min
10'
3'
Min
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:
Figure 34
The Fireplace
=
=
=
=
=
=
=
=
=
=
=
=
45-3/8"
10-1/4"
16-1/4"
34-1/4"
46-1/4"
4"
FTF8-12
Note: It is recommended that all exterior ex-
posed metal fireplace components; such as
terminations, flashings, storm collars and/or
flue be painted with a premium quality, high
temperature, rust preventative paint designed
for metal. This is especially important when
installationsaremadeinabnormallyadverseor
corrosive environments; such as near lakes,
oceans or in areas with consistently high hu-
midity conditions. Consult the paint manufac-
turers instructions for proper preparation and
application.
MULTIPLE TERMINATIONS
FTF8-18
If more than one termination is located in the
samechaseorwithinthesamegeneralproxim-
ity, we suggest they should be separated in
distance at least 24" horizontally from flue cen-
ter 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 35 ).
FTF8-36
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"*
CTD
18"
TEN FOOT RULE SUMMARY
18"
The minimum chimney height above the roof
and/or to adjacent walls and buildings is speci-
fied by all major building codes.
CTDT
* Required for every 30' of vertical chimney
and/or 10' of offset chimney.
CTDT
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.
4. Determine amount of chimney height re-
quired by subtracting total combined height of
all pre-selected components (fireplace and
chimneycomponentsfromtotaldesiredheight.)
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
chimney edge. The top of the chimney must be
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.
Figure 35
Reference Vertical Elevation Chart and deter-
minethenumberofchimneysections(quantity
and length) required.
This suggestion is provided in the interest of
betteroperation. Iftheterminationsarelocated
too close to each other, smoke may migrate
from one flue into the other.
SPECIAL OFFSET INSTRUCTIONS
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.
FTF8 CHIMNEY COMPONENT
CALCULATIONS
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, ad-
versewindconditions, etc., mayrequireataller
chimney should the fireplace not draft properly
(see Figure 34 ).
The minimum installed height of the com-
pleted fireplace system is 15' 0". The maxi-
mum height is 60' 0".
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
11
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
exceed 10' between elbows, a chimney stabi-
lizer must be used at the midpoint (Figure 36 ).
The stabilizer support straps must be attached
under tension (in shear) to structural framing
members above. When two sets of elbows are
used, the maximum combined length of chim-
ney used between elbows cannot exceed 20'
(Figure37).Example:IfC =10' thenC cannot
FTF8 VERTICAL ELEVATION CHART
Height Of
Chimney Only
Number Of FTF8
Chimney Lengths
Height Of
Chimney Only
Number Of FTF8
Chimney Lengths
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
443
450 ³⁄₄
461
462 ³⁄₄
466 ³⁄₄
472
478 ³⁄₄
483
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
1
2
exceed 10'.
36
5
36 11
37 6 ³⁄₄
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 38 ).
38
5
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
496 ³⁄₄
507
508 ³⁄₄
513
519
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
41 4 ³⁄₄
42
42 4 ³⁄₄
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
(Figure 39 ). Be sure to drill only through the
outer chimney casting. Do not puncture the
inner flue.
3
42
43
43
9
3
9
525
529 ¹⁄₄
535 ¹⁄₄
543
553 ¹⁄₄
555
44 1 ¹⁄₄
44 7 ¹⁄₄
45
46 1 ¹⁄₄
46
3
Maximumoffsetofchimneysystemis30°.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,
providedthetotalheightofthesystemexceeds
25'.
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
212
219 ³⁄₄
230
18 3 ³⁄₄
19
19 3 ³⁄₄
2
231 ³⁄₄
236
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
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.
288
OFFSET CALCULATIONS
294 ³⁄₄
298 ¹⁄₄
304 ¹⁄₄
312
322 ¹⁄₄
324
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
24 6 ³⁄₄
24 10 ¹⁄₄
25 4 ¹⁄₄
26
26 10 ¹⁄₄
27
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
Step 1. Use Offset Chart to determine amount
of horizontal offset (A) and height (B) for vari-
ous chimney section assemblies.
0
0
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.
59
60
6
0
720
727 ³⁄₄
738
739 ³⁄₄
744
60 7 ³⁄₄
61
61 7 ³⁄₄
62
6
0
Step 3. Use Elevation Chart as job estimator
only. Add necessary firestop spacers and sta-
bilizers as required. Firestop spacers must be
used as shown in Figures 22 and 23 and
stabilizers as shown in Figure 28.
12
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"
36"
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.
22 ¹⁄₄
25 ¹⁄₄
26 ¹⁄₄
27
Offset
Elbow
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 36
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 37
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
13
Step 5. Secure support straps to framing
members by nailing under tension in sheer
(Figure 41 ).
INSTALLING OFFSETS
First, review the Offset Elevation Chart and
Figure 38 for reference.
Joints
Step 1. Determine the offset distance where
chimney is to pass through the first ceiling-
dimension “A.” To find this point on your ceil-
ing, first determine the center point for a verti-
cal chimney following the instructions for ver-
tical installation.
Chimney
Section
4'
y Joint Past 6'
Screws Required At
Ever
No. 8 x 1/2" SMS
6'
Return
Elbow
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.
No Screws Required In
Joints For First 6' of Offset
Figure 41
Note: The return elbow assembly performs the
same function as a stabilizer. Consider this
when determining the need for a stabilizer.
Figure 38
Step2. ProceedbyusingtheStraightUpInstal-
lation Instructions for cutting and framing ceil-
ing and roof openings.
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.
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
Underside Of Chimney
Offset Elbow Assembly
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.
Blower Kits (Circulating Models Only)
Figure 39
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.
FTF8-E30 Return Elbow*
Chimney Section (S)
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.
Return Elbow Assembly
B
FTF8-30 Offset Elbow*
Return elbows install the same way as round
terminations and stabilizers:
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
42 AND 43 ).
A
Step 1. Hold return elbow over top of last
chimney section.
Step 2. Center inner slip section into inner flue
pipe-slip down.
Note: The utilization of fans will increase the
air flow around the firebox. However, only a
minimal increase in heat output should be
anticipated.
Step3. Centerouter-lockingsectionoverouter
chimneypipe.Pushdownuntillockingjointhas
firmly engaged.
*Part of Offset/Return Package Model FTF8-ES30
Step 4. Pull up slightly on return elbow to
ensure locking joint has firmly engaged.
Figure 40
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
14
POWER TO THE FIREPLACE
The Optional Blower Kit
Operates on 115 volt 60 Hz
150 watts AC
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.
Note: Using a soapy water 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.
HOUSE
WIRING
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 44.
GROUND
WIRE
COVER PLATE
Replace Cover Plate
After Electrical
Hook-Up
House Wiring Must Be Secured
With The Appropriate Electrical
Connector To The Fireplace
Convenience Outlet Wiring
Figure 42
Combustion
Air Actuator
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.
Vent Free Appliances
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.
Pull Forward to Open,
Push Back to Close
Figure 44
The unit has been tested for use with any
unvented log sets having a maximum rating of
32,000 BTU. The minimum mantle configura-
tion for these log sets are outlined inFigure 46.
To operate, push the end of the actuator to the
left as shown in Figure 44, 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.
BLOWER THREE
PRONGED PLUG TO
GROUNDED OUTLET
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.
Figure 43
These fireplaces have been marked with a
maximum rating of 32,000 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.
The FBK-100/200 Blower Kits are design certi-
fied by Warnock Hersey for use with these
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.
Always check local building codes. Installation
of the FBK Blower Kits must comply with local
regulations as well as the National Electric
Code.
Gas Line Connection
NEVER INSTALL AN UNVENTED GAS LOG
SET WITH A BTU GREATER THAN 32,000 IF
COMBUSTIBLE MANTLE PROJECTIONS ARE
LOWER THAN 18 INCHES ABOVE THE FIRE-
PLACE OPENING.
Combustion Air Kits
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.
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: WHEN USING THE DECORATIVE
GAS APPLIANCE, THE FIREPLACE DAMPER
MUSTBESETINTHEFULLYOPENPOSITION.
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).
CAUTION:PLUMBINGCONNECTIONSSHOULD
ONLY BE PERFORMED BY A QUALIFIED, LI-
CENSEDPLUMBER. MAINGASSUPPLYMUST
BE OFF WHEN PLUMBING GAS LINE TO FIRE-
PLACE OR PERFORMING SERVICE.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
15
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.
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.
Finished Wallboard
Header
12"
Max.
1 1/2"
FIREPLACE FINISHES
Mantels and Trim
Combustible
Mantel
and Trim
12"*
Spacer
Min.
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.
9"*
Note:Theheadermayrestonthetwo(2)metal
top spacers on top of the unit but the header
must not be notched to fit around the spacers.
Fireplace
Opening
*Both Of These Dimensions Must Be At Least 18”
When An Unvented Gas Log Set Rated At 32,000
BTU Or Higher Is Used. (Maximum 40,000 BTU)
IMPORTANT:REPACKINSULATIONMATERIAL
IN SQUARE HOLE AROUND GAS LINE, INTE-
RIORANDEXTERIOROFFIREPLACE, TOSEAL.
Thesefireplacesmaysitdirectlyonacombus-
tible surface. A 2" air space is required be-
tween combustible framing and the chimney.
A1"airspaceisrequiredbetweencombustible
framing and fireplace outer wrapper.
Typical US Installation
Figure 46
Glass Doors
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.
Hearth Extensions and Wall Shields
In Canada, the minimum height for a com-
bustible mantel is 18" (457 mm) above the
fireplace opening. Figure 45 shows typical
Canadianinstallations. Forinstallationsother
than Canada, combustible mantels and trim
maybeinstalled12"abovethefireplaceopen-
ing as per NFPA 211, Section 7-2.3.3. and
Figure 46. If a mantel is of a noncombustible
material, it is exempt from these require-
ments as long as it does not interfere with the
installation or operation of glass doors.
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
47 ). Use a hearth extension constructed of a
durable noncombustible material having an
equal or better (lower kvalue) insulatingvalue
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 = .43 BTU IN/FT HR °F or a thermal
resistance that equals or exceeds r = 2.33 HR
°F FT2/BTU IN. With these values, determine
the minimum thickness/material required us-
ing the formula and Page 17.
Finished
Wallboard
Header
8" Max.
(203mm)
Note: Any noncombustible material whose k
value is less than .43 or whose r value is more
than 2.33 is acceptable.
COLD CLIMATE INSULATION
If you live in a cold climate, it is especially
importanttosealallcracksaroundthefireplace
opening with noncombustible material and
wherever cold air could enter the room. Sur-
rounding materials must be caulked where it
meets the black metal facing of the fireplace to
avoid cold air intrusion. Use noncombustible
caulking material only on fireplace facing to
seal. Also, the outside air inlet duct should be
wrapped with noncombustible insulation to
minimize the formation of condensation. Do
not place insulation materials on top of fire-
place or against chimney sections.
Combustible
Mantel
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).
Spacer
18" Min.
(457mm)
A wall shield is required where a continuous
perpendicular side wall is within 12" of the
fireplace opening (Figure 48 ). Use a 36" W x
36" H wall shield constructed of a durable,
noncombustible material having an equal or
better (lower k value) insulating value than k =
Fireplace
Opening
Typical Canadian Installation
Figure 45
2
.54 BTU IN/FT HR °F. At no time may a
perpendicular side wall be located closer
Note: A 2" air space must be preserved for all
combustible materials extending for any con-
tinuous length adjacent to the chimney.
than 9" from the fireplace opening.
If fireplace is installed diagonally across a 90°
corner; no wall shields are required.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
16
Hearth Extension Dimensions
A
B
C
D
16"
38"
8"
54"
C
C
B
D
Note: To convert inches to millimeters
divide by 0.03937
A
Figure 47
Answer - The minimum required thickness of the Micore 160 is .875” ,
therefore round up to 7/8” and use the nearest standard thickness available
which is 1” .
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: If Micore 160 is to be used for the hearth extension fireplace,
k (per inch) r (per inch)
Listed Min.Thickness
how thick must this material be?
0.43
Listed Material
2.33
1
T
"
L
KL
rL
kM = k value per inch of alternate material
rM = r value per inch of alternate material
TM = minimum thickness required for alternate material
** Approved Alternate Materials for Floor/Hearth Protection
AlternativeMaterials
Thermal Values
MinimumThickness
(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
1.09" (1-1/8")
.81" (7/8")
Micore 160™
U.S. Gypsum
T = minimum thickness of listed material
L
1.07" (1-1/8")
4.47" (4-1/2")
Micore 300™
U.S. Gypsum
.46
2.17
.52
Note: An asterix “*” indicates, it is a value taken from Table 1.
Using the k formula:
Durock™ Cement Board
U.S. Gypsum
1.92
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
4.53" (4-1/2")
5.35" (5-3/8")
6.56" (6-1/2")
Hardibacker 500™
material (TM)
of listed material (kM)
material (T )
L
Cultered Stone Hearth-
stone™
TM (inches)
TM (inches)
=
=
kM
*.43
x
T
L
Wonderboard
3.23
.61
.31
7.51" (7-1/2")
1.42" (1-3/8")
Super Firetemp M
Johns-Manville
1.64
*.35
*.43
x
x
1"
1"
1.26" (1-1/4")
Super Firetemp L
Johns-Manville
.54
1.85
Face brick
9.00
5.00
5.00
12.5
11.0
.111
.20
.20
.08
.09
20.93" (20-7/8")
11.63" (11-5/8")
11.63" (11-5/8")
29.07" (29-1/8")
25.58" (25-5/8")
.875 (inches) =
.875
Common brick
Cement mortar
Ceramic tile
Marble
Answer - The minimum required thickness of the Micore 160 is .875”,
therefore round up to 7/8” and use the nearest standard thickness
available which is 1”.
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
** 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).
=
x
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.
*2.33
*2.86
1"
1"
.875 (inches) =
.875
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
17
The sum of all “R values” is: .70 + .10 +. 038
+ .10 = .938
Wall Shield Required
Where Less Than 12"
ThiswouldNOTbeanacceptablecombination
of material for the hearth extension since the
totalcalculated“Rvalue” ofthematerialsused
is under the required “R value” of 2.33. An
additional layer of insulating materials must
be used.
36"
5 1/2"
36"
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 50
Figure 48
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(FIGURE49).
At times it is important to know what
combination of materials are acceptable for
use as floor protection. The “R values” are
usedtodetermineacceptablecombinationsof
materialsbecause“Rvalues” 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 = 2.33 x 1” = 2.33.”
L
7 1/2"
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 51.
Figure 49
If common brick is used so that the 3 1/2”
dimension is the height, “R” for 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
“R”M = rM x TS = 0.20 x 3 1/2" = .70
Shaded Area
“ Safe Zone”
1"
Using 1/2” of mortar to set the brick, “R” for
the mortar is calculated as follows:
mortar
45°
WARNING: WHEN INSTALLING HEARTH
EXTENSION IN FRONT OF A CIRCULAT-
INGFIREPLACEMODEL, THEFIREPLACE
MUST BE RAISED IF HEIGHT OF HEARTH
EXTENSIONEXCEEDS2"ABOVEBOTTOM
OF FIREPLACE (FIGURE 50 ).
12"
“R”M = rM x TS = 0.20 x 1/2" = .10
Min. Distance To
Unprotected Side Wall
Next, a 3/4" marble slab set in 1/2" mortar cov-
ers the brick, “R” for the marble and mortar
becomes:
12"
Figure 51
marble
“R”M = rM x TS = 0.05 x 3/4" = .038
mortar
“R”M = rM x TS = 0.20 x 1/2" = .10
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
18
INSTALLATION COMPONENTS
The following items are available for use in the
installation of this appliance.
(FBK-200 Models Only)
Chimney Section
63L10
63L13
63L14
63L15
62L92
62L93
FTF8-12
FTF8-18
FTF8-36
FTF8-48
FTF8-18C
FTF8-36C
Forced Air Blower Kits
-Single Speed
-Variable Speed
80L84
80L85
FBK-100
FBK-200
Canadian
Chimney Section
Firestop Spacer (30°)
63L32
F8FS30-2
63L38
63L39
F8F6
F8F12
Flashing
Offset/ Return
Package (30°)
63L22
FTF8-ES30
Outside Combustion Air Kits
(with duct)
(without duct)
81L87
81L88
FOAK
FOAK-LD
Stabilizer
63L25
FTF8-S4
Chase Termination
96L20
FTF8-CTT
Combination
Offset/Return Elbow
63L28
FTF8-OR15
Firestop Spacer (Flat)
63L31
F8FS-2
Round Termination
63L42
FTF8-CTD
Storm Collar
63L59
FSC
Chase Termination
96L22
FTF8-ATT
Locking Band
63L60
FLB
Shipping Weight
188 lbs.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
19
INSTALLATION COMPONENTS
(Not Provided)
Chase Termination
(Square)
63L51
FTF8-CT2
Attic Shield Assembly
63L67
FTF8-FSAS
Chase Termination
(Square)
Chase Termination
(Round)
63L48
FTF8-CT1
Cold Climate Kit
H7412
CCK-HCRD
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
P/N 850,047M REV. A 12/2008
Orange, CA 92865
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