INSTALLATION
INSTRUCTIONS
MERIT® SERIES
36" Wood Burning Fireplaces
P/N 850,048M REV. N/C 01/2007
MODELS
CR-3835R CR-3835L
This installation manual will enable you to obtain a safe, efficient and
dependable installation of your fireplace system. Please read and understand 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.
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
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.
PLEASE RETAIN THIS MANUAL FOR FUTURE REFERENCE.
OTL Report No. 116-F-20-4
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
1
TABLE OF CONTENTS
Safety Rules .................................... page 2
Tools and Building Supplies ............ page 2
Precautions ..................................... page 2
Introduction..................................... page 3
Chimney/Mantel Clearances And
Height Requirements....................... page 3
Chimney System ............................. page 3
Assembly Outline............................. page 4
Location of Fireplace ....................... page 4
Assembly Steps............................... page 5
Preinstallation Notes........................ page 5
Fireplace Clearances ........................ page 5
Installing the Fireplace..................... page 5
Fireplace Specifications .................. page 6
Framing Specifications.................... page 7
Installing the Chimney System ........ page 8
30° Offset through Floor/Ceiling ...... page 9
Ten Foot Rule Summary .................. page 11
Multiple Terminations...................... page 11
Chimney Component Calculations ... page 11
Special Offset Instructions............... page 11
Offset Calculations........................... page 12
Vertical Elevation Chart................... page 13
Offset Elevation Chart ..................... page 15
Installing Offsets.............................. page 17
Combustion Air Kits ........................ page 17
Gas Line Connection........................ page 17
Glass Doors..................................... page 18
Cold Climate Insulation.................... page 18
Fireplace Finishes ............................ page 18
Mantels and Trim............................. page 18
Hearth Extensions/Wall Shields ....... page 18
Finish Requirements........................ page 20
Installation Components.................. page 21
IMPORTANT: PLEASE READ AND
UNDERSTAND THESE RULES TO
FOLLOW FOR SAFETY.
1. Before starting your fireplace installation,
read these installation instructions carefully to
be sure you understand them completely and in
entirety. Failure to follow them could cause a
fireplace malfunction resulting in serious injury
and/or property damage.
2. Always check your local building codes. The
installation must comply with all local, regional,
state and national codes and regulations.
3. These fireplaces must be installed with either
Security Chimneys model FTF8 (8" [203mm]
inside diameter) or FTF10 (10" [250mm] inside
diameter) Chimney System only. These systems are intended for use in any application
where a traditional masonry type fireplace would
apply. The chimney system must always vent to
the outside of the building.
4. To ensure a safe fireplace system and to prevent
the build-up of soot and creosote, inspect and
clean the fireplace and chimney prior to use and
periodically during the heating season.
5. Use solid fuel only. DO NOT use artificial
wax based logs, chemical chimney cleaners or
flame colorants in your fireplace.
6. DO NOT use charcoal or coal under any
circumstances.
7. NEVER use gasoline, gasoline-type lantern
fuel, kerosene, charcoal lighter fluid, or similar
liquids to start or “freshen up” a fire in this
fireplace. Keep any flammable liquids a safe
distance from the fireplace.
8. NEVER leave children unattended when
there is a fire burning in the fireplace.
9. Always keep flue damper open when heat is
present in the fireplace.
10. Before servicing, allow the fireplace to
cool. Always shut off any electricity or gas to
the fireplace while working on it. This will
prevent any possible electrical shock or burns.
11. This fireplace is not intended to heat an entire
home or be used as a primary heat source. It is
designed to ensure homeowner comfort by providing supplemental heat to the room.
12. Always ensure an that adequate supply of
replacement combustion air from the outside
of the house is accessible to the fire to support
normal combustion. Fireplaces consume large
volumes of air during the normal combustion
process. In the event the home is tightly sealed
with modern energy efficient features, the optional combustion air kit may not provide all
the air required to support combustion.
The manufacturer is not responsible for any
smoking or related problems that may result
from the lack of adequate combustion air. It is
the responsibility of the builder/contractor to
ensure that adequate combustion air has been
provided for the fireplace.
13. DO NOT use a fireplace insert or any
other products not specified herein by the
manufacturer for use with this fireplace. All
gas log sets must be operated with the
damper clamped open.
WARNING: THIS FIREPLACE HAS NOT
BEEN TESTED WITH AN UNVENTED GAS
LOG SET. TO REDUCE RISK OF FIRE OR
INJURY, DO NOT INSTALL AN UNVENTED
GAS LOG SET INTO THIS FIREPLACE.
14. "Smoke free" operation is not warranteed
nor are we responsible for inadequate system
draft caused by mechanical systems, general
construction conditions, inadequate chimney
heights, adverse wind conditions and/or unusual environmental factors or conditions beyond our control.
15. Never, under any circumstances, install a
fireplace, chimney component or any accessories, that has visible or suspected physical
damage as a result of handling or transportation. These items should be inspected by your
distributor or qualified factory representative
to ensure safe condition. When in doubt, consult your distributor.
16. For additional safety considerations and
complete operating instructions, refer to the
Care and Operation Manual provided with the
fireplace.
TOOLS AND BUILDING SUPPLIES
NORMALLY REQUIRED
Tools should Include:
Phillips screwdriver
Hammer
Saw and/or sabersaw
Level
Measuring tape
Plumb line
Electric drill and bits
Pliers
Square
Building supplies:
Framing materials
Wall finishing materials
Caulking materials (noncombustible)
Fireplace surround and hearth
extension materials (noncombustible)
PRECAUTIONS
Note: These fireplace systems are not difficult
to install. However, in the interest of safety, it is
recommended that the installer be a qualified
or certified “tradesman” familiar with commonly accepted fireplace installation and safety
techniques as well as prevailing local codes.
2
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
The most important areas of concern dealing
with the installation of factory-built fireplaces are
clearances to combustible materials, proper assembly of component parts, height of the chimney system, the proper use of accessories supplied by the manufacturer and the techniques
employed in using finishing materials applied to
the wall surrounding the fireplace, hearth extensions 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.
INTRODUCTION
General Information
These fireplaces are conventional radiant heat
fireplaces with standard bar grates, optional
outside combustion air kits and optional decorative glass doors.
These fireplaces have been tested and listed by
Omni Test Labs (Report No.116-F-20-4) 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.
TYPICAL INSTALLATION
Note: Illustrations shown reflect “typical”
installations with nominal dimensions and
are for design and framing reference only.
Actual installations may vary due to individual design preferences. However, always
maintain minimum clearances to combustible materials and do not violate any specific
installation requirements.
These fireplace systems are designed for installation 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
BOCA Basic/National Codes, the Standard Mechanical Code and the Uniform Building Codes.
WARNING: FAILURE TO USE MANUFACTURE PROVIDED PARTS, VARIATIONS
IN TECHNIQUES AND CONSTRUCTION
MATERIALS OR PRACTICES OTHER THAN
THOSE DESCRIBED IN THIS MANUAL
MAY CREATE A FIRE HAZARD AND VOID
THE LIMITED WARRANTY.
When complete these fireplace systems consists 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. The Chimney Collar Enclosure Kit (Canada
Only) or Collar Duct Kit (U.S)
CHIMNEY CLEARANCES AND MANTEL
HEIGHT REQUIREMENTS
The fireplace may be placed on or near normal
construction materials*. The combustion air
kit, firestop spacer and roof flashings (not
chase flashings) may be placed directly on or
against normal construction materials*. The
chimney requires a minimum 2" (51 mm) air
space to combustibles (
bustible mantle may be installed 12" (305 mm)
above the opening of the fireplace as per NFPA
211, Section 7-3.3.3. In Canada the minimum
is 18" (457 mm) above the opening.
The fireplace and chimney system must be
enclosed when installed in or passing through
a living area where combustibles or people may
come in contact with it. This is important to
prevent possible personal injury or fire hazard.
See **Note
). A com-
Figure 1
Outside
Combustion
Air Kit
(Optional)
Chimney
And
Termination
CCEK
W.H.I. Approved
(Required In
Canada)
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 ).
CHIMNEY SYSTEM
These fireplaces are designed and code listed
for use with Security's FTF8 and FTF10 chimney System only. Always use Security's FTF8
and FTF10 chimney components with these
fireplaces. Do not modify or alter these components as this may cause a potential serious
hazard and void the Warranty.
*Construction Materials:
• framing materials • paneling
• particle board • flooring
• dry wall • etc.
• plywood
** Note: 1" (25 mm) when installed with
FTF10 in the U.S. only.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
3
Insulate Joists
Same As Ceiling
Draft Stops
Firestop
CTDT
Termination
Note: NonCombustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
Insulation
(Thermal Barrier)
Figure 2
8'
Level
Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
Chimney Height
The total height of your completed fireplace system from the surface the fireplace rests on to the
chimney top must not exceed 50' (15.24 m) and
must also meet minimum height requirements.
Refer to the minimum system height chart.
Minimum System Height
FTF10 FTF8
Vertical 15'2" 16'8"
Installation (4.62 m) (5.08 m)
One 15'2" 16'8"
Offset (4.62 m) (5.08 m)
Two 25'0" 25'0"
Offsets (7.62 m) (7.62 m)
Chase Enclosure
A chase is a vertical box-like structure constructed to surround the fireplace and chimney.
Refer to
Figure 2
for a typical chase configuration. 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 climate installation is not required for safety.
ASSEMBLY OUTLINE
Before You Start
LOCATION OF FIREPLACE
Carefully select the proper location for heat
circulation, aesthetics, chimney obstructions
and clearance to side wall(s). With proper preplanning, a slight adjustment of a few inches
can save considerable time and expense later
during construction and assembly.
Inside
Corner
Installation
Hearth
Figure 4
Carefully consider the position of the fireplace
opening with respect to the location of adjacent or nearby stairwells, bath or kitchen exhaust fans and/or return air registers for forced
air furnaces/air conditioners that could cause
a smoking fireplace condition if the house is
tightly insulated.
When locating the fireplace, consideration must
be given to combustibles and final finishing.
See
Figure 5
and confine the final location of
combustible finish materials to the "Safe Zone".
Hearth
8" (203mm) Min.
To Protected Side
Wall
Outside
Corner
Installation
WARNING: IF INSULATION IS USED, THE
FIREPLACE MUST NOT BE PLACED DIRECTLY AGAINST IT. INSULATION OR
VAPOR BARRIERS, IF USED, MUST FIRST
BE COVERED WITH GYPSUM BOARD,
PLYWOOD, PARTICLE BOARD OR OTHER
MATERIAL TO ASSURE INSULATION AND
VAPOR BARRIERS REMAIN IN PLACE.
WARNING: DO NOT PACK OR FILL REQUIRED AIR SPACES WITH INSULATION
OR OTHER MATERIAL. NO MATERIAL IS
ALLOWED IN THESE AREAS.
Note: Do not insulate the chase cavity with
blown or fill type insulation materials.
Note: Local codes may not require firestopping
at the ceiling levels for outside chase installations. However, it is recommended for safety
and the reduction of heat loss.
4
Check your inventory list to be sure you have all
the necessary parts supplied in good usable
condition. Check also for any concealed damage.
Check the operation of the damper. The damper
is controlled through the use of a control lever
located within the firebox opening at the top
center just behind the firebox lintel (
Figure 3
The control lever snaps into place at the extreme range of motion, up and back in the
closed position. When pulled forward and
down, the damper is open.
Lintel
Damper
Closed
Damper
Open
Combustion
Air Actuator
Figure 3
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
DO NOT permanently place furniture or other
items such as decorative pillows within 60" of
the fireplace front face.
Combustible
Materials
).
Allowed In
Shaded Area
“Safe Zone”
15 ⁷⁄₈”
11 ⁷⁄₈”
12"
45°
Min. Distance To
8"
Protected Side Wall
Min. Distance To
Unprotected Side Wall
Figure 5
Fireplace
8"
ASSEMBLY STEPS
Note: The following steps represent the normal
sequence of installation. Each installation is
unique, however, and might require a different
sequence.
1. Position firebox prior to framing or into
prepared framing.
2. Install the chimney system.
3. Connect house wiring to the fireplace for
later attachment of optional blower.
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/certified tradesman.)
6. Complete the installation, finish wall material, surround and hearth extension to your
individual taste.
7. Assemble and attach optional glass door
assembly.
Study the three dimensional illustration (
ure 1
) to get a general idea of each element of
Fig-
your fireplace system.
PRE-INSTALLATION NOTES
The fireplace may be installed directly on a
combustible floor or raised on a platform of an
appropriate height. Do not place fireplace on
carpeting, vinyl or other soft floor coverings. It
may, however, be placed on flat wood, plywood, 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.
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.
Usually, no special floor support is needed for
the fireplace, however, to be certain:
1. Estimate the total weight of the fireplace
system including chimney and surround materials such as brick, stone, etc., to be installed. Shipping weights for the fireplace may
be found on page 18.
2. Measure the square footage of the floor
space to be occupied by the system, surrounds
and hearth extensions.
3. Note the floor construction, i.e. 2 x 6’s, 2 x 8’s
or 2 x 10’s, single or double joists, type and
thickness of floor boards.
4. Use this information and consult your local
building code to determine if you need additional support.
CAUTION: DO NOT BLOCK THE HEAT-CIRCULATING AIR INLET AND OUTLET PORTS ON
CIRCULATING MODELS. DOING SO MAY RESULT IN A POTENTIAL FIRE HAZARD.
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.
FIREPLACE CLEARANCES
Minimum clearance to combustibles for the
appliance is as follows: sides and back - ¹⁄₂" (13
mm), floor - 0" (0 mm), adjacent wall - 12" (305
mm), ceiling - 37 ¹⁄₂" (953 mm).
INSTALLING THE FIREPLACE
Step 1. Slide the fireplace into prepared fram-
ing or position fireplace in its final position and
frame later.
The fireplace may not be recessed into a combustible floor. Maintain the floor to hearth clearance established by the fireplace lower front face.
Step 2. Insert the provided metal safety strips,
beneath the fireplace as illustrated (
and 8
). The safety strips should overlap ¹⁄₂" for
continual coverage of the floor.
Note: Safety strips are not required when fireplace rests on a noncombustible surface.
1/2" (13mm)
Clearance To
Back And Sides
Combustible
Wall
Metal
Safety Strip
1/2"
(13mm)
Fireplace And
Hearth Extension
On Raised Platform
Platform
Figures 6, 7
Hearth
Extension
Floor
1/2" (13mm)
Clearance To
Back And Sides
Combustible
Wall
Hearth
1/2"
(13mm)
Metal
Safety Strip
Extension
Fireplace And
Hearth Extension
On Floor
Floor
Figure 7
Note: Install the hearth extension only as illus-
trated.
The safety strips should extend from front of
the fireplace at least 1 ¹⁄₂" and should extend to
be at least flush with the sides. In the event a
wooden support is used to elevate the fireplace
above the floor, a “Z” type safety strip should be
fabricated and used to protect the front surface
of the wood support as well as the floor beneath
the hearth extension (
Figures 8 and 9
). The
safety strips should be tacked down to prevent
possible movement.
Note: The “Z” type safety strip is not supplied.
2"
(51mm)
Metal
Safety Strip
2"
(51mm)
Figure 8
2"
(51mm)
Special “Z”
Metal Safety Strip
Blocking
2"
(51mm)
Figure 9
Step 3. Refer to fireplace drawings and specifi-
cations on pages 6 and 7 for framing dimensions
and details. Frame appliance enclosure as illustrated in
Figures 11 through 14
on page 8.
Figure 6
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
5
IMPORTANT: UNDER NO CIRCUMSTANCES
CAN THE FIREPLACE TOP SPACERS (
6
) BE REMOVED OR MODIFIED, NOR MAY
FIGURE
YOU NOTCH THE HEADER TO FIT AROUND
OR BE INSTALLED LOWER THAN THE SPACERS. THE HEADER MAY BE IN DIRECT CONTACT WITH THE TOP SPACERS BUT MAY NOT
BE SUPPORTED BY THEM.
Note: The framed depth, 24 (610 mm) from a
framed wall, must always be measured from a
finished surface. If a wall covering such as
drywall is to be attached to the rear wall, then
the 24" (610 mm) must be measured from the
drywall surface. It is important that this dimension be exact.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed.
The header may rest on the top metal spacers,
but must not be notched to fit around them.
Consult all local codes.
For Canadian Installations
Proceed with Steps 4 through 7.
Step 4. Attach the chimney collar enclosure kit,
Model CCK1, around chimney collar with the
screws provided (
Figure 10
).
FIREPLACE SPECIFICATIONS
40 1/2"
(1029mm)
37 3/8"
(949mm)
17 1/2"
(445mm)
32 7/8"
(835mm)
21"
(533m)
6"
(152mm)
17 1/2"
(445mm)
38 5/8"
(981mm)
42 3/4"
(1086mm)
Right Corner Opening
38 5/8"
(981mm)
42 3/4"
(1086mm)
Left Corner Opening
21"
(533m)
6"
(152mm)
37 3/8"
(949mm)
32 7/8"
(835mm)
40 1/2"
(1029mm)
Enclosure
Box
Figure 10
Step 5. Connect the 4" (102 mm) Class 0 air
duct provided to the collar on the chimney
collar enclosure with the screws provided in the
hardware kit.
(254mm)
(191mm)
Figure 11
10"
7 1/2
Closed End
40 1/4"
(1022mm)
10 1/2"
(267mm)
10"
(254mm)
15"
(381mm)
35"
(889mm)
42 3/4"
(1086mm)
Top View
40 1/4"
(1022mm)
24"
(610mm)
10"
(254mm)
19 7/8"
(505mm)
Open End
6
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
FRAMING SPECIFICATIONS
Back Wall of Chase/Encloslure Including
Finishing Materials if any
Rough
Framing
Face
(Unfinished
Shown)
Note: No Wall Shield
Required On This Wall
D
C
Framing Without False Header
Figure 12
Back Wall of Chase/Encloslure
Rough Framing
Face (Unfinished
Shown)
Figure 13
B
Header
A
Including Finishing
Materials if any
A
Outside Corner
8" Max.
11 ⁷⁄₈"
(302mm)
C
Figure 14
Note: Combustible Materials
May Be Placed In Shaded Area.
(203mm)
45°
8" (203mm) Min. To
Protected Side Wall
Inside Corner Using Outside Air
Framing Dimensions
CR-3835 Series
A 42 ⁵₈"
(1082 mm)
C
B 40 ⁵₈"
(1032 mm)
C 24"
(610 mm)
D 34 ⁷₈"
D
Roof Framing
Figure 15
C
(886 mm)
Note: All framing dimensions calculated for 5/8"
nailing flange depth and 1/2" dry wall at the
fireplace face. If sheathing the chase or finishing
with other thickness materials, calculations will
need to be made.
B
Framing Dimensions for Ceiling
Flue Type A B
FTF8 Vertical 16 ¹⁄₂" 16 ¹⁄₂"
at 2" (419 mm) (419 mm)
FTF10 Vertical 17" 17"
at 1" (432 mm) (432 mm)
FTF10 Vertical 19" 19"
at 2" (483 mm) (483 mm)
FTF8 Offset 30° 16 ¹⁄₂" 27"
at 2" (419 mm) (686 mm)
FTF10 Offset 30° 17" 26"
at 1" (432 mm) (660 mm)
FTF10 Offset 30° 19" 28"
At 2" (438 mm) (711 mm)
Ceiling Framing
Figure 16
Framing Dimensions for Roof
Pitch FTF8 at 2" FTF10 at 1" FTF10 at 2"
CD*CD*CD*
0/12 16 ¹⁄₂" 16 ¹⁄₂" 17" 17" 19" 19"
(419 mm) (419mm) (432 mm) (432 mm) (483 mm) (483 mm)
6/12 16 ¹⁄₂" 19" 17" 19" 19" 21"
(419 mm) (483 mm) (432 mm) (483 mm) (483 mm) (533 mm)
12 /12 16 ¹⁄₂" 23 ¹⁄₂" 17" 24" 19" 26"
(419mm) (597mm) (432mm) (610 mm) (483mm) (660 mm)
*Perpendicular to roof ridge
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
A
7
Step 6. Route the Class 0 air duct out the back
wall or side wall, up through the ceiling or floor
joists to an outside wall. The air duct should be
located above snow level.
Note: If the fireplace is installed against an
inside wall, the Class 0 air duct may be extended into a ventilated attic space at least 18"
(457 mm) above the attic floor. Secure the duct
hood to a vertical post with the inlet positioned
downward. Ensure nothing blocks the hood
opening. This air duct must never terminate
higher than the chimney.
Step 7. Cut or frame hole through the outside
wall for the installation of the duct inlet hood.
A 4 ¹⁄₄" (114 mm) diameter hole is sufficient.
Feed the loose end of the flexible air duct
through the hole cut for the inlet hood and
attach to collar on inlet hood using two (2)
screws. Insert hood into opening. Secure in
place with nails driven through holes in hood
flange. Seal with noncombustible waterproof
silicon type caulking. If additional air duct is
needed, use Class 0 metallic air duct.
Step 8. 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
).
INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
of the damper, as described on page 4, (
to Figure 3
).
Step 2. Using standard construction framing
techniques, construct opening for chimney
route up through the ceiling(s) and roof or
through an outside chase.
Framing must maintain adequate minimum air
space clearance at all times.
CAUTION: ALLOW MINIMUM 2" (51 MM)
CHIMNEY AIR SPACE TO COMBUSTIBLE
FRAMING MEMBERS THROUGHOUT VERTICAL OR OFFSET CHIMNEY INSTALLATION
(
SEE **NOTE
).
A minimum 2" (51 mm) air space must be
reserved for all combustible materials extending for any continuous length surrounding the chimney (
Reference
See **Note
Figures 14 and 15
).
and charts Framing Dimensions for Ceiling and Roof, which
specify minimum ceiling and roof dimensions.
To determine chimney center line in new construction, use plumb line from roof or ceiling
above fireplace to center of flue collar on
fireplace.
refer
Note: If installing the optional collar duct kit, it
should be installed after the chimney has been
attached to the flue collar.
Step 3. Position appropriate firestop spacer at
ceiling and fasten temporarily with two (2) 8d
nails or equivalent. If chimney penetrates ceiling vertically, use flat firestop spacer, Model
F8FS-2 for FTF8 system and Model F10FS-2
for the FTF10 system*. If chimney penetrates
ceiling at 30° angle (offset chimney), use 30°
firestop spacer, Model F8FS30-2 for FTF8 and
Model F10FS30-2 for FTF10 system*. Use one
nail on opposite sides to hold firestop spacer
in position. Fasten permanently, using at least
two (2) more 8d nails or equivalent, after
chimney sections have been assembled
through the firestop spacer and after any necessary adjustments have been made. Firestop
spacer must be secured by at least four (4) 8d
nails or equivalent when completely installed.
Note: If there is a room above ceiling level,
firestop spacer must be installed on the bottom
side of the ceiling. If an attic is above ceiling
level, firestop spacer must be installed on top
side of ceiling joist (Figures 19 and 20 ).
Room Above
8d Nail Or
Equivalent
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 1/2" clearance from the firebox wrapper to
the framing at the closest point of contact,
directly adjacent to the flange.
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 18
). Then plumb from ceiling or
roof level directly above hole which has just
been completed.
Plumb Line
Figure 18
Firestop Spacer
Figure 19
Attic Above
Firestop Spacer
Figure 20
*Note: Use Models F10FS or F10FS30 when
installing FTF10 chimney in the U.S. only.
** Note: 1" (25 mm) when installed with FTF10
in the U.S. only.
8
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
CHIMNEY 30° OFFSET THROUGH FLOOR
Stabilizer
OR CEILING
It may be necessary to assemble the chimney at
30° when passing through the floor or ceiling
area. Use the F8FS30-2 firestop spacer as shown
Figures 21 and 22
in
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.
. Support the chimney at
Attic Space
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
pulling up slightly from the top to ensure proper
engagement before installing the next section.
If the flue has been installed correctly, it will not
separate when you test it. Also, the inner flue
joint where each section is joined should be
tight and flat without gaps (
Figure 23
).
Always maintain 2" (51 mm) minimum air space
to combustible materials and always check
each chimney joint (inner and outer) to ensure
proper engagement (
See **Note
). Check vertical alignment of chimney so that it projects
from the roof in true vertical position.
F8FS30-2
Firestop Spacer
2" Min.
Air Space
10'
Max.
FTF8-S4 Stabilizer
2" Min.
Air Space
30° Firestop
And Attic Above
Figure 21
Room Above
F8FS30-2
Firestop Spacer
2" Min.
Air Space
10'
Max.
2" Min.
Air Space
FTF8-S4 Stabilizer
30° Firestop
And Room Above
Figure 22
Step 4.
Note: Chimney sections are constructed
with a unique locking tab design, which ensures an immediate, tight assembly between
sections. Plan your chimney requirements carefully before assembly as chimney is difficult to
disassemble after installation. If disassembled,
the tabs might become damaged. Be certain
tabs are properly formed to ensure locking
tabs engage properly.
Security's FTF8 and FTF10 chimney systems
are two piece chimneys, which snap together
from the fireplace up. Start with the inner flue
section. With the lanced end up, snap lock it into
the matching collar on top of the fireplace.
Figure 23
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 24
).
Locking
Tabs
(Lances)
Figure 24
Note: Assemble one component of chimney at
a time (inner section first, then outer section
last) before proceeding with the next complete
section.
Continue to assemble the chimney up through
framed opening. Assemble just enough to penetrate the roof flashing openings (
Figure 25
).
** Note: 1" (25 mm) when installed with FTF10
in the U.S. only.
2" (51mm)** (
Min. Air Space to
Combustibles
See **Note
)
Figure 25
Security's chimney sections do not need to be
screwed together. Additional reinforcement is
not necessary except in certain offset conditions (refer to page 14,
Figure 36
).
Step 5. The height of vertical chimney pipe
supported only by the fireplace must not exceed 30' (9.1 m). Chimney heights above 30'
(9.1 m) must be supported by a Model F8-S4 or
Model F10-S4 stabilizer installed at 30' (9.1 m)
intervals.
Note: The Model F8-S4 and Model F10-S4 add
3" (76 mm) net effective height to the total
chimney system.
Install Model F8-S4 or F10-S4 stabilizer by
fitting inner section down into respective section of proceeding flue pipe and locking outer
stabilizer section into place over the outer
chimney pipe. Position for proper clearance
through framed opening and nail straps securely (under tension in “shear”) into place on
framing. Use 8d nails or equivalent. Attach
successive lengths of chimney pipe directly to
stabilizer using same techniques as described
in Step 4 (
Figure 26
).
Figure 26
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 subsequent chimney section is securely attached by
testing as noted in Step 4.
Step 6. Select the proper Security Chimneys
roof flashing based on pitch of roof. Use chart
below for selection:
Roof Pitch FTF8 FTF10
Flat to 6/12 F8-F6 F10-F6
6/12 to 12/12 F8-F12 F10-F12
Next, slide roof flashing over extended chimney
section that previously has been installed above
the roof opening in Step 4. Slide flashing all the
way down until the flashing base rests flat on
the roof. Again, check the vertical position of
the chimney and the 2" (51 mm) minimum air
space to combustibles (
See **Note
).
Next, slide roof flashing over extended chimney
section that previously has been installed above
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 27
). Again, check the vertical
position of the chimney and the 2" minimum air
space to combustibles.
FTF8 Chimney
Do Not Seal
Figure 28
Step 8. The standard Security Chimneys roof
flashing assemblies include a storm collar. Slide
storm collar over outer chimney, 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 waterprood roof caulking
around entire circumference of pipe. Also add
extra roof caulking where storm collar meets
flashing and to the tab/slot area to seal completely against water penetration (
Figure 29
Check all joints very carefully to ensure no water
intrusion can take place.
Locking Band
Waterproof
Caulk
Note: If chimney extends more than 8' above
roof surface, guy wires are also recommended.
Use three (3) guy wires, attach to locking band
assembly, extend and secure to roof in a triangular pattern (Figure 30 ). Guy wires are not
supplied by the manufacturer.
Roof Ridge
120°
Figure 30
Step 10. Using a CTD Round Termination:
).
1. Hold the CTD over top of last chimney
section (
Figure 31
).
2. Center inner slip section in inner flue pipeslip down.
3. Center outer locking section over outer flue
pipe. Push down until locking tabs are firmly
engaged.
4. Pull up slightly on CTD to ensure locking joint
has firmly engaged.
Flashing Spacers
FTF8 Flashing
Figure 27
Note: Do not caulk or seal the ventilating
openings.
Step 7. Secure flashing by nailing along the
perimeter into roof using 8d nails. If shingled
roof, slide upper end and sides of roof flashing
under shingles (trim if necessary), seal the top
and both sides of the flashing to the roof with
roof caulking. Cover nail heads with roof caulking (
Figure 28
).
10
Figure 29
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 the chimney extends more than
6' above the roof flashing, the use of locking
bands is advisable to strengthen the chimney
assembly. Align the locking band at the chimney 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 damage the chimney section (
refer to Figure 29
).
** Note: 1" (25 mm) when installed with FTF10
in the U.S. only.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
CTD
Termination
Chimney
Figure 31
Using a FTF8/10-CTDT Chase Termination:
Refer to specific installation instructions included with the FTF8/10-CTDT chase termination for clearance and installation details.
Less Than 10'
FTF8 AND FTF10 CHIMNEY COMPONENT
CALCULATIONS
3'
Min
Figure 32
Using a FTF8/10-CT1 Chase Termination:
Refer to specific installation instructions included with FTF8/10-CT1 chase terminations
for clearance and installation details.
Using a FTF8/10-CT2 Chase Termination:
Refer to specific installation instructions included with FTF8/10-CT2 chase terminations
for clearance and installation details.
Note: It is recommended that all exterior exposed 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
installations are made in abnormally adverse
or corrosive environments; such as near lakes,
oceans or in areas with consistently high humidity conditions. Consult the paint manufacturers instructions for proper preparation and
application.
TEN FOOT RULE SUMMARY
The minimum chimney height above the roof
and/or to adjacent walls and buildings is specified by all major building codes.
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.
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.
2' Min.
10'
3'
Min
The 2' in 10' rule is necessary in the interest of
safety but does not ensure smoke-free operation. Trees, buildings, adjoining roof lines, adverse wind conditions, etc., may require a taller
chimney should the fireplace not draft properly
see Figure 32
(
).
MULTIPLE TERMINATIONS
If more than one termination is located in the
same chase or within the same general proximity, 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 termination of one smoke exit to the termination of
another smoke exit (
18"
CTDT
24"
Figure 33
This suggestion is provided in the interest of
better operation. If the terminations are located
too close to each other, smoke may migrate
from one flue into the other.
Figure 33
24"
).
CTD
18"
CTDT
The minimum installed height of the completed
fireplace systems is 15' 2" (4.67 m). The maximum height for all systems is 50' 0" (15.24 m).
To determine the number of chimney sections
and chimney components required, follow these
steps:
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 components required, except chimney sections. This
would include firestop spacers, stabilizers, roof
flashing, etc.
3. The effective heights of the components are:
The Fireplace = 39 ¹⁄₂" (1003 mm)
FTF8/FTF10-12 = 10 ¹⁄₄" (260 mm)
FTF8/F10-18 = 16 ¹⁄₄" (413 mm)
FTF8/F10-36 = 34 ¹⁄₄" (870 mm)
FTF8-48 = 46 ¹⁄₄" (1175 mm)
CTD Termination = 4" (102 mm)
CT1 Termination = 12" to 18"
(305 mm to 457 mm)
CT2 Termination = 15" to 23"
(381 mm to 584 mm)
SS Starter Section = 19 ¹⁄₄" (489 mm)
S4 Stabilizer * = 3" (76 mm)*
* Required for every 30' (9.1 m) of vertical
chimney and/or 10' of offset chimney.
4. Determine amount of chimney height required by subtracting total combined height of
all pre-selected components (fireplace and
chimney components from total desired height.)
Reference Vertical Elevation Chart and determine the number of chimney sections (quantity
and length) required.
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
— an offset elbow to initiate the offset and a
return elbow to terminate it.
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 stabilizer must be used at the midpoint (
Figure 34
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 chimney used between elbows cannot exceed 20'
(
Figure 35
). Example: If C1 = 10' then C2 cannot
exceed 10'.
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
metal screw located at the underside of the joint
(
Figure 36
).
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 37
). Be sure to drill only through the
outer chimney casting. Do not puncture the
inner flue.
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, provided the total height of the system exceeds 25'.
Return elbow support straps must be securely attached under tension (in shear) to
structural framing members above. Do not
substitute a FTF8/10-30 offset elbow in place
of a FTF8/10-E30 return elbow.
OFFSET CALCULATIONS
Step 1. Use Offset Chart to determine amount
of horizontal offset (A) and height (B) for various chimney section assemblies.
).
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. Add necessary firestop spacers and stabilizers as required. Firestop spacers must be
used as shown in
lizers as shown in
B
1
Figures 21 and 22
Figure 26
20'
Max.
A
1
10' Max.
Offset
Elbow
.
Stabilizer
and stabi-
Return
Elbow
A
2
C
2
A
1
C
1
A
2
C
2
A
1
C
1
B
2
B
1
B
2
B
1
12
Figure 34
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Figure 35
FTF8 VERTICAL ELEVATION CHART
Height Of Number Of FTF8 Height Of
Chimney Only Chimney Components Chimney Only
Inches Feet/Inches 12" 18" 24" 36" 48" -S4 Meters
10 ¹⁄₄ 010¹⁄₄ 1 0 0 0 0 – 0.26
16 ¹⁄₄ 14¹⁄₄ 0 1 0 0 0 – 0.41
22 ¹⁄₄ 110¹⁄₄ 0 0 1 0 0 – 0.57
26 ¹⁄₂ 22¹⁄₂ 1 1 0 0 0 – 0.67
32 ¹⁄₂ 28¹⁄₂ 1 0 1 0 0 – 0.83
34 ¹⁄₄ 210¹⁄₄ 0 0 0 1 0 – 0.87
38 ¹⁄₂ 32¹⁄₂ 0 1 1 0 0 – 0.98
44 ¹⁄₂ 38¹⁄₂ 1 0 0 1 0 – 1.13
46 ¹⁄₄ 310¹⁄₄ 0 0 0 0 1 – 1.17
50 ¹⁄₂ 42¹⁄₂ 0 1 0 1 0 – 1.28
56 ¹⁄₂ 48¹⁄₂ 1 0 0 0 1 – 1.44
62 ¹⁄₂ 52¹⁄₂ 0 1 0 0 1 – 1.59
68 ¹⁄₂ 58¹⁄₂ 0 0 1 0 1 – 1.74
72 ³⁄₄ 6 ³⁄₄ 1 1 0 0 1 – 1.85
78 ³⁄₄ 66³⁄₄ 1 0 1 0 1 – 2.00
84 ³⁄₄ 7 ³⁄₄ 0 1 1 0 1 – 2.15
90 ³⁄₄ 76³⁄₄ 1 0 0 1 1 – 2.31
92 ¹⁄₂ 78¹⁄₂ 0 0 0 0 2 – 2.35
96 ³⁄₄ 8 ³⁄₄ 0 1 0 1 1 – 2.46
102 ³⁄₄ 86³⁄₄ 1 0 0 0 2 – 2.61
108 ³⁄₄ 9 ³⁄₄ 0 1 0 0 2 – 2.76
114 ³⁄₄ 96³⁄₄ 0 0 1 0 2 – 2.91
119 9 11 1 1 0 0 2 – 3.02
125 10 5 1 0 1 0 2 – 3.18
131 10 11 0 1 1 0 2 – 3.33
137 11 5 1 0 0 1 2 – 3.48
138 ³⁄₄ 11 6 ³⁄₄ 0 0 0 0 3 – 3.52
143 11 11 0 1 0 1 2 – 3.63
149 12 5 1 0 0 0 3 – 3.78
155 12 11 0 1 0 0 3 – 3.94
161 13 5 0 0 1 0 3 – 4.09
165 ¹⁄₄ 13 9 ¹⁄₄ 1 1 0 0 3 – 4.20
171 ¹⁄₄ 14 3 ¹⁄₄ 1 0 1 0 3 – 4.35
177 ¹⁄₄ 14 9 ¹⁄₄ 0 1 1 0 3 – 4.50
183 ¹⁄₄ 15 3 ¹⁄₄ 1 0 0 1 3 – 4.65
185 15 5 0 0 0 0 4 – 4.70
189 ¹⁄₄ 15 9 ¹⁄₄ 0 1 0 1 3 – 4.81
195 ¹⁄₄ 16 3 ¹⁄₄ 1 0 0 0 4 – 4.96
201 ¹⁄₄ 16 9 ¹⁄₄ 0 1 0 0 4 – 5.11
207 ¹⁄₄ 17 3 ¹⁄₄ 0 0 1 0 4 – 5.26
211 ¹⁄₂ 17 7 ¹⁄₂ 1 1 0 0 4 – 5.37
217 ¹⁄₂ 18 1 ¹⁄₂ 1 0 1 0 4 – 5.52
223 ¹⁄₂ 18 7 ¹⁄₂ 0 1 1 0 4 – 5.68
229 ¹⁄₂ 19 1 ¹⁄₂ 1 0 0 1 4 – 5.83
231 ¹⁄₄ 19 3 ¹⁄₄ 0 0 0 0 5 – 5.87
235 ¹⁄₂ 19 7 ¹⁄₂ 0 1 0 1 4 – 5.98
241 ¹⁄₂ 20 1 ¹⁄₂ 1 0 0 0 5 – 6.13
Height Of Number Of FTF8 Height Of
Chimney Only Chimney Components Chimney Only
Inches Feet/Inches 12" 18" 24" 36" 48" -S4 Meters
247 ¹⁄₂ 20 7 ¹⁄₂ 0 1 0 0 5 – 6.29
253 ¹⁄₂ 21 1 ¹⁄₂ 0 0 1 0 5 – 6.44
257 ³⁄₄ 21 5 ³⁄₄ 1 1 0 0 5 – 6.55
263 ³⁄₄ 21 11 ³⁄₄ 1 0 1 0 5 – 6.70
269 ³⁄₄ 22 5 ³⁄₄ 0 1 1 0 5 – 6.85
275 ³⁄₄ 22 11 ³⁄₄ 1 0 0 1 5 – 7.00
277 ¹⁄₂ 23 1 ¹⁄₂ 0 0 0 0 6 – 7.05
281 ³⁄₄ 23 5 ³⁄₄ 0 1 0 1 5 – 7.16
287 ³⁄₄ 23 11 ³⁄₄ 1 0 0 0 6 – 7.31
293 ³⁄₄ 24 5 ³⁄₄ 0 1 0 0 6 – 7.46
299 ³⁄₄ 24 11 ³⁄₄ 0 0 1 0 6 – 7.61
304 25 4 1 1 0 0 6 – 7.72
310 25 10 1 0 1 0 6 – 7.87
316 26 4 0 1 1 0 6 – 8.03
322 26 10 1 0 0 1 6 – 8.18
323 ³⁄₄ 26 11 ³⁄₄ 0 0 0 0 7 – 8.22
328 27 4 0 1 0 1 6 – 8.33
334 27 10 1 0 0 0 7 – 8.48
340 28 4 0 1 0 0 7 – 8.64
346 28 10 0 0 1 0 7 – 8.79
350 ¹⁄₄ 29 2 ¹⁄₄ 1 1 0 0 7 – 8.90
356 ¹⁄₄ 29 8 ¹⁄₄ 1 0 1 0 7 – 9.05
365 ¹⁄₄ 30 5 ¹⁄₄ 0 1 1 0 7 1 9.28
371 ¹⁄₄ 30 11 ¹⁄₄ 1 0 0 1 7 1 9.43
373 31 1 0 0 0 0 8 1 9.47
377 ¹⁄₄ 31 5 ¹⁄₄ 0 1 0 1 7 1 9.58
383 ¹⁄₄ 31 11 ¹⁄₄ 1 0 0 0 8 1 9.73
389 ¹⁄₄ 32 5 ¹⁄₄ 0 1 0 0 8 1 9.89
395 ¹⁄₄ 32 11 ¹⁄₄ 0 0 1 0 8 1 10.04
399 ¹⁄₂ 33 3 ¹⁄₂ 1 1 0 0 8 1 10.15
405 ¹⁄₂ 33 9 ¹⁄₂ 1 0 1 0 8 1 10.30
411 ¹⁄₂ 34 3 ¹⁄₂ 0 1 1 0 8 1 10.45
417 ¹⁄₂ 34 9 ¹⁄₂ 1 0 0 1 8 1 10.60
419 ¹⁄₄ 34 11 ¹⁄₄ 0 0 0 0 9 1 10.65
423 ¹⁄₂ 35 3 ¹⁄₂ 0 1 0 1 8 1 10.76
429 ¹⁄₂ 35 9 ¹⁄₂ 1 0 0 0 9 1 10.91
435 ¹⁄₂ 36 3 ¹⁄₂ 0 1 0 0 9 1 11.06
441 ¹⁄₂ 36 9 ¹⁄₂ 0 0 1 0 9 1 11.21
445 ³⁄₄ 37 1 ³⁄₄ 1 1 0 0 9 1 11.32
451 ³⁄₄ 37 7 ³⁄₄ 1 0 1 0 9 1 11.47
457 ³⁄₄ 38 1 ³⁄₄ 0 1 1 0 9 1 11.63
463 ³⁄₄ 38 7 ³⁄₄ 1 0 0 1 9 1 11.78
465 ¹⁄₂ 38 9 ¹⁄₂ 0 0 0 0 10 1 11.82
469 ³⁄₄ 39 1 ³⁄₄ 0 1 0 1 9 1 11.93
475 ³⁄₄ 39 7 ³⁄₄ 1 0 0 0 10 1 12.08
481 ³⁄₄ 40 1 ³⁄₄ 0 1 0 0 10 1 12.24
486 40 6 1 0 1 1 9 1 12.34
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
13
FTF10 VERTICAL ELEVATION CHART
Height Of Number Of FTF10 Height Of
Chimney Only Chimney Lengths Chimney Only
Inches Feet/Inches 12" 18" 36" MM M
11 0 11 1 0 0 279 0.28
17 1 5 0 1 0 432 0.43
21 ¹⁄₄ 19¹⁄₄ 2 0 0 540 0.54
27 ¹⁄₄ 23¹⁄₄ 1 1 0 692 0.69
33 ¹⁄₄ 29¹⁄₄ 0 2 0 845 0.85
35 2 11 0 0 1 889 0.89
37 ¹⁄₄ 31¹⁄₄ 2 1 0 946 0.95
43 ¹⁄₄ 37¹⁄₄ 1 2 0 1099 1.10
51 ¹⁄₄ 43¹⁄₄ 0 1 1 1302 1.30
55 ¹⁄₄ 47¹⁄₄ 2 0 1 1403 1.40
61 ¹⁄₄ 51¹⁄₄ 1 1 1 1556 1.56
67 ¹⁄₄ 57¹⁄₄ 0 2 1 1708 1.71
69 ¹⁄₄ 59¹⁄₄ 0 0 2 1759 1.76
79 ¹⁄₄ 67¹⁄₄ 1 0 2 2013 2.01
85 ¹⁄₄ 71¹⁄₄ 0 1 2 2165 2.17
89 ¹⁄₂ 75¹⁄₂ 2 0 2 2273 2.27
95 ¹⁄₂ 711¹⁄₂ 1 1 2 2426 2.43
103 ¹⁄₄ 87¹⁄₄ 0 0 3 2622 2.62
113 ¹⁄₂ 95¹⁄₂ 1 0 3 2883 2.88
119 ¹⁄₂ 911¹⁄₂ 0 1 3 3035 3.03
123 ³⁄₄ 10 3 ³⁄₄ 2 0 3 3143 3.14
129 ³⁄₄ 10 9 ³⁄₄ 1 1 3 3296 3.30
137 ¹⁄₂ 11 5 ¹⁄₂ 0 0 4 3493 3.49
147 ³⁄₄ 12 3 ³⁄₄ 1 0 4 3753 3.75
153 ³⁄₄ 12 9 ³⁄₄ 0 1 4 3905 4.91
158 13 2 2 0 4 4013 4.01
164 13 8 1 1 4 4166 4.17
171 ³⁄₄ 14 3 ³⁄₄ 0 0 5 4362 4.36
182 15 2 1 0 5 4623 4.62
188 15 8 0 1 5 4775 4.78
192 16 0 2 0 5 4877 4.88
198 16 6 1 1 5 5029 5.03
206 17 2 0 0 6 5232 5.23
215 ³⁄₄ 17 11 ³⁄₄ 1 0 6 5480 5.48
222 18 6 0 1 6 5639 5.64
226 ¹⁄₄ 18 10 ¹⁄₄ 2 0 6 5747 5.75
232 ¹⁄₄ 19 4 ¹⁄₄ 1 1 6 5899 5.90
240 20 0 0 0 7 6096 6.10
250 ¹⁄₄ 20 10 ¹⁄₄ 1 0 7 6356 6.36
256 ¹⁄₄ 21 4 ¹⁄₄ 0 1 7 6509 6.51
260 ¹⁄₂ 21 8 ¹⁄₂ 2 0 7 6617 6.62
266 ¹⁄₂ 22 2 ¹⁄₂ 1 1 7 6769 6.77
274 ¹⁄₄ 22 10 ¹⁄₄ 0 0 8 6966 6.97
284 ¹⁄₂ 23 8 ¹⁄₂ 1 0 8 7226 7.23
290 ¹⁄₂ 24 2 ¹⁄₂ 0 1 8 7379 7.38
294 ³⁄₄ 24 6 ³⁄₄ 2 0 8 7487 7.49
300 ³⁄₄ 25 0 ³⁄₄ 1 1 8 7639 7.64
308 ¹⁄₂ 25 8 ¹⁄₂ 0 0 9 7836 7.84
318 ³⁄₄ 26 8 ³⁄₄ 1 0 9 8096 8.10
324 ³⁄₄ 27 0 ³⁄₄ 0 1 9 8249 8.25
328 ³⁄₄ 27 4 ³⁄₄ 2 0 9 8350 8.35
334 ³⁄₄ 27 10 ³⁄₄ 1 1 9 8503 8.50
342 ³⁄₄ 28 6 ³⁄₄ 0 0 10 8706 8.71
352 ³⁄₄ 29 4 ³⁄₄ 1 0 10 8960 8.96
358 ³⁄₄ 29 10 ³⁄₄ 0 1 10 9112 9.11
363 30 3 2 0 10 9220 9.22
369 30 9 1 1 10 9373 9.37
376 ³⁄₄ 31 4 ³⁄₄ 0 0 11 9569 9.57
387 32 3 1 0 11 9829 9.83
393 32 9 0 1 11 9982 9.98
397 ¹⁄₄ 33 1 ¹⁄₄ 2 0 11 10090 10.09
403 ¹⁄₄ 33 7 ¹⁄₄ 1 1 11 10243 10.24
411 34 3 0 0 12 10439 10.44
421 ¹⁄₄ 35 1 ¹⁄₄ 1 0 12 10700 10.70
427 ¹⁄₄ 35 7 ¹⁄₄ 0 1 12 10852 10.85
431 ¹⁄₂ 35 11 ¹⁄₂ 2 0 12 10960 10.96
437 ¹⁄₂ 36 5 ¹⁄₂ 1 1 12 11113 11.11
445 ¹⁄₄ 37 1 ¹⁄₄ 0 0 13 11309 11.31
455 ¹⁄₂ 37 11 ¹⁄₂ 1 0 13 11570 11.57
Height Of Number Of FTF10 Height Of
Chimney Only Chimney Lengths Chimney Only
Inches Feet/Inches 12" 18" 36" MM M
461 ¹⁄₂ 38 5 ¹⁄₂ 0 1 13 11722 11.72
465 ¹⁄₂ 38 9 ¹⁄₂ 2 0 13 11824 11.82
471 ¹⁄₂ 39 3 ¹⁄₂ 1 1 13 11976 11.98
479 ¹⁄₂ 39 11 ¹⁄₂ 0 0 14 12179 12.18
489 ¹⁄₂ 40 9 ¹⁄₂ 1 0 14 12433 12.43
495 ¹⁄₂ 41 3 ¹⁄₂ 0 1 14 12586 12.59
499 ³⁄₄ 41 7 ³⁄₄ 2 0 14 12694 12.69
505 ³⁄₄ 42 1 ³⁄₄ 1 1 14 12846 12.85
513 ¹⁄₂ 42 9 ¹⁄₂ 0 0 15 13043 13.04
523 ³⁄₄ 43 7 ³⁄₄ 1 0 15 13303 13.30
529 ³⁄₄ 44 1 ³⁄₄ 0 1 15 13456 13.46
534 44 6 2 0 15 13564 13.56
540 45 0 1 1 15 13716 13.71
547 ³⁄₄ 45 7 ³⁄₄ 0 0 16 13913 13.91
558 46 6 1 0 16 14173 14.17
564 47 0 0 1 16 14326 14.33
568 ¹⁄₄ 47 4 ¹⁄₄ 2 0 16 14434 14.43
574 ¹⁄₄ 47 10 ¹⁄₄ 1 1 16 14586 14.59
582 48 6 0 0 17 14783 14.78
592 ¹⁄₄ 49 4 ¹⁄₄ 1 0 17 15043 15.04
598 ¹⁄₄ 49 10 ¹⁄₄ 0 1 17 15196 15.20
602 ¹⁄₄ 50 2 ¹⁄₄ 2 0 17 15297 15.30
608 ¹⁄₄ 50 8 ¹⁄₄ 1 1 17 15450 15.45
616 ¹⁄₄ 51 4 ¹⁄₄ 0 0 18 15653 15.65
626 ¹⁄₄ 52 2 ¹⁄₄ 1 0 18 15907 15.91
632 ¹⁄₄ 52 8 ¹⁄₄ 0 1 18 16059 16.06
636 ¹⁄₂ 53 0 ¹⁄₂ 2 0 18 16167 16.17
642 ¹⁄₂ 53 6 ¹⁄₂ 1 1 18 16320 16.32
650 ¹⁄₄ 54 2 ¹⁄₂ 0 0 19 16516 16.52
660 ¹⁄₂ 55 0 ¹⁄₂ 1 0 19 16777 16.78
666 ¹⁄₂ 55 6 ¹⁄₂ 0 1 19 16929 16.93
670 ³⁄₄ 55 10 ³⁄₄ 2 0 19 17037 17.04
676 ³⁄₄ 56 4 ³⁄₄ 1 1 19 17189 17.19
684 ¹⁄₂ 57 0 ¹⁄₂ 0 0 20 17386 17.39
694 ³⁄₄ 57 10 ³⁄₄ 1 0 20 17647 17.65
700 ³⁄₄ 58 4 ³⁄₄ 0 1 20 17799 17.80
705 58 9 2 0 20 17907 17.91
711 59 3 1 1 20 18059 18.06
718 ³⁄₄ 59 10 ³⁄₄ 0 0 21 18256 18.26
729 60 9 1 0 21 18517 18.52
735 61 3 0 1 21 18669 18.67
739 61 7 2 0 21 18771 18.77
745 62 1 1 1 21 18923 18.92
753 62 9 0 0 22 19126 19.13
763 63 7 1 0 22 19380 19.38
769 64 1 0 1 22 19533 19.53
773 ¹⁄₄ 64 5 ¹⁄₄ 2 0 22 19641 19.64
779 ¹⁄₄ 64 11 ¹⁄₄ 1 1 22 19793 19.79
787 65 7 0 0 23 19990 19.99
797 ¹⁄₄ 66 5 ¹⁄₄ 1 0 23 20250 20.25
803 ¹⁄₄ 66 11 ¹⁄₄ 0 1 23 20403 20.40
807 ¹⁄₂ 67 3 ¹⁄₂ 2 0 23 20511 20.51
813 ¹⁄₂ 67 9 ¹⁄₂ 1 1 23 20663 20.66
821 ¹⁄₄ 68 5 ¹⁄₄ 0 0 24 20860 20.86
831 ¹⁄₂ 69 3 ¹⁄₂ 1 0 24 21120 21.12
837 ¹⁄₂ 69 9 ¹⁄₂ 0 1 24 21273 21.27
841 ³⁄₄ 70 1 ³⁄₄ 2 0 24 21380 21.38
847 ³⁄₄ 70 7 ³⁄₄ 1 1 24 21533 21.53
855 ¹⁄₂ 71 3 ¹⁄₂ 0 0 25 21730 21.73
865 ³⁄₄ 72 1 ³⁄₄ 1 0 25 21990 21.99
871 ³⁄₄ 72 6 ³⁄₄ 0 1 25 22142 22.14
875 ³⁄₄ 72 11 ³⁄₄ 2 0 25 22244 22.24
881 ³⁄₄ 73 5 ³⁄₄ 1 1 25 22396 22.40
889 ³⁄₄ 74 1 ³⁄₄ 0 0 26 22600 22.60
899 ³⁄₄ 74 11 ³⁄₄ 1 0 26 22854 22.85
905 ³⁄₄ 75 5 ³⁄₄ 0 1 26 23006 23.01
910 75 10 2 0 26 23114 23.11
916 76 4 1 1 26 23266 23.27
924 77 0 0 0 27 23470 23.47
14
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
FTF8 OFFSET ELEVATION CHART
(With FTF8-SS Starter Section)
A B FTF10/8-ES30 FTF8-SS Number of FTF8 A B
Offset Height Offset/Return Starter FTF8-S4 Chimney Sections Offset Height
(Inches) (Inches) Elbow Set Section Stabilizer 12" 18" 36" 48" (mm) (mm)
14 32 ¹⁄₂ 1 1 0 0 0 0 0 356 826
19 41 ¹⁄₄ 1 1 0 1 0 0 0 483 1048
22 46 ¹⁄₂ 1 1 0 0 1 0 0 559 1181
24 ¹⁄₄ 50 ¹⁄₄ 1 1 0 2 0 0 0 616 1276
27 ¹⁄₄ 55 ¹⁄₄ 1 1 0 1 1 0 0 692 1403
30 ¹⁄₄ 60 ¹⁄₂ 1 1 0 0 2 0 0 768 1537
31 62 1 1 0 0 0 1 0 787 1575
32 ¹⁄₄ 64 ¹⁄₄ 1 1 0 2 1 0 0 819 1632
35 ¹⁄₄ 69 ¹⁄₄ 1 1 0 1 2 0 0 895 1759
36 ¹⁄₄ 71 1 1 0 1 0 1 0 921 1803
37 72 ¹⁄₂ 1 1 0 0 0 0 1 940 1842
38 ¹⁄₄ 74 ¹⁄₂ 1 1 0 0 3 0 0 972 1892
39 ¹⁄₄ 76 1 1 0 0 1 1 0 997 1930
41 ¹⁄₂ 79 ³⁄₄ 1 1 0 2 0 1 0 1048 2026
42 ¹⁄₄ 81 ¹⁄₄ 1 1 0 1 0 0 1 1073 2064
44 ¹⁄₄ 85 1 1 0 1 1 1 0 1124 2159
45 ¹⁄₄ 86 ¹⁄₂ 1 1 0 0 1 0 1 1149 2197
47 ¹⁄₄ 90 1 1 0 0 2 1 0 1200 2286
48 ¹⁄₄ 91 ³⁄₄ 1 1 0 0 0 2 0 1226 2330
49 ¹⁄₄ 93 ³⁄₄ 1 1 0 2 1 1 0 1251 2381
51 ¹⁄₂ 97 ¹⁄₄ 1 1 0 1 4 0 0 1308 2470
53 ¹⁄₄ 100 ¹⁄₂ 1 1 0 1 0 2 0 1353 2553
54 ¹⁄₄ 102 1 1 0 0 0 1 1 1378 2591
55 ¹⁄₂ 104 ¹⁄₄ 1 1 0 0 3 1 0 1403 2648
56 ¹⁄₄ 105 ³⁄₄ 1 1 0 0 1 2 0 1429 2686
58 ¹⁄₄ 109 ¹⁄₄ 1 1 0 2 0 2 0 1480 2775
59 ¹⁄₄ 111 1 1 0 1 0 1 1 1505 2819
60 ¹⁄₄ 112 ¹⁄₂ 1 1 0 0 0 0 2 1530 2858
61 ¹⁄₄ 114 ¹⁄₂ 1 1 1 1 1 2 0 1556 2908
65 ³⁄₄ 122 ¹⁄₄ 1 1 1 0 2 2 0 1670 3105
66 ³⁄₄ 124 1 1 1 1 0 0 2 1695 3150
68 126 1 1 1 2 1 2 0 1727 3200
69 ³⁄₄ 129 1 1 1 0 1 0 2 1772 3277
71 ³⁄₄ 132 ³⁄₄ 1 1 1 1 0 3 0 1822 3372
74 ³⁄₄ 138 1 1 1 0 1 3 0 1899 3505
77 141 ¹⁄₂ 1 1 1 2 0 3 0 1956 3594
78 ³⁄₄ 144 ³⁄₄ 1 1 1 0 0 1 2 2000 3677
80 146 ³⁄₄ 1 1 1 1 1 3 0 2032 3727
83 152 1 1 1 0 2 3 0 2108 3861
84 ³⁄₄ 155 1 1 1 0 0 0 3 2153 3937
89 162 ¹⁄₄ 1 1 1 1 0 4 0 2261 4121
89 ³⁄₄ 164 1 1 1 1 0 0 3 2280 4166
92 167 ¹⁄₂ 1 1 1 0 1 4 0 2337 4255
92 ³⁄₄ 169 1 1 1 0 1 0 3 2356 4293
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
15
FTF10 OFFSET ELEVATION CHART
A B FTF10-ES30 Number of FTF10 A B
Offset Height Offset/Return FTF10-S4 Chimney Sections Offset Height
(Inches) (Inches) Elbow Set Stabilizer 12" 18" 36" (mm) (mm)
415³⁄₄ 1 0 0 0 0 102 400
924¹⁄₂ 1 0 1 0 0 229 622
12 29 ³⁄₄ 1 0 0 1 0 305 756
14 ¹⁄₄ 33 ¹⁄₂ 1 0 2 0 0 362 851
17 ¹⁄₄ 38 ¹⁄₂ 1 0 1 1 0 438 978
20 ¹⁄₄ 43 ³⁄₄ 1 0 0 2 0 514 1111
21 45 ¹⁄₄ 1 0 0 0 1 533 1149
22 ¹⁄₄ 47 ¹⁄₂ 1 0 2 1 0 565 1207
25 ¹⁄₄ 52 ¹⁄₂ 1 0 1 2 0 641 1334
26 ¹⁄₄ 54 ¹⁄₄ 1 0 1 0 1 667 1378
28 ¹⁄₄ 57 ³⁄₄ 1 0 0 3 0 718 1467
29 ¹⁄₄ 59 ¹⁄₄ 1 0 0 1 1 743 1505
31 ¹⁄₄ 63 1 0 2 0 1 794 1600
32 ¹⁄₂ 65 1 0 4 1 0 826 1651
34 ¹⁄₄ 68 ¹⁄₄ 1 0 1 1 1 870 1734
36 ¹⁄₄ 71 ³⁄₄ 1 0 3 0 1 921 1822
37 ¹⁄₄ 73 ¹⁄₄ 1 0 0 2 1 946 1861
38 ¹⁄₄ 75 1 0 0 0 2 972 1905
39 ¹⁄₄ 77 1 0 2 1 1 997 1956
41 ¹⁄₂ 80 ¹⁄₂ 1 0 1 4 0 1054 2045
43 ¹⁄₄ 83 ³⁄₄ 1 0 1 0 2 1099 2127
44 ¹⁄₂ 85 ³⁄₄ 1 0 3 1 1 1130 2178
45 ¹⁄₄ 87 ¹⁄₂ 1 0 0 3 1 1149 2223
46 ¹⁄₄ 89 1 0 0 1 2 1175 2261
48 ¹⁄₄ 91 ¹⁄₂ 1 0 2 0 2 1226 2324
49 ¹⁄₂ 94 ¹⁄₂ 1 0 1 5 0 1257 2400
51 ¹⁄₄ 97 ³⁄₄ 1 0 1 1 2 1302 2483
54 ¹⁄₄ 103 1 0 0 2 2 1378 2616
55 ¹⁄₄ 104 ¹⁄₂ 1 0 0 0 3 1403 2654
56 ¹⁄₂ 106 ¹⁄₂ 1 0 2 1 2 1435 2705
59 ¹⁄₂ 111 ³⁄₄ 1 0 1 2 2 1511 2838
61 ³⁄₄ 116 1 1 1 0 3 1568 2946
64 ³⁄₄ 121 ¹⁄₄ 1 1 0 1 3 1645 3080
67 124 ³⁄₄ 1 1 2 0 3 1702 3169
69 127 ³⁄₄ 1 1 1 3 2 1753 3245
70 130 1 1 1 1 3 1778 3302
73 135 ¹⁄₄ 1 1 0 2 3 1854 3435
75 138 ³⁄₄ 1 1 2 1 3 1905 3524
79 145 ¹⁄₂ 1 1 1 0 4 2007 3696
80 ¹⁄₄ 147 ¹⁄₂ 1 1 3 1 3 2038 3747
82 150 ³⁄₄ 1 1 0 1 4 2083 3829
87 159 ¹⁄₂ 1 1 1 1 4 2210 4051
Chimney
Section
No Screws Required In
Figure 36
Underside Of Chimney
Figure 37
FTF8-E30 Return Elbow*
Chimney Section (S)
FTF8-SS
FTF10-30 Offset Elbow*
Joints
4'
Screws Required At
Every Joint Past 6'
6'
Joints For First 6' of Offset
No. 8 x 1/2" SMS
A
B
16
*Part of Offset/Return Package Model FTF10/8-ES30
Figure 38
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
INSTALLING OFFSETS
First, review the Offset Elevation Chart and
Figure 38
Step 1. Determine the offset distance where
chimney is to pass through the first ceilingdimension “A.” To find this point on your ceiling, first determine the center point for a vertical chimney following the instructions for vertical installation.
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
show the center point for your offset ceiling cut.
Step 2. Proceed by using the Straight Up Installation Instructions for cutting and framing ceiling and roof openings.
for reference.
Note: See Framing and Dimension Chart for the
sizes of the ceiling and roof openings. The size
of the roof opening varies with the degree of
pitch of the roof.
Offset Elbow Assembly
Offset elbows install the same as chimney
sections. First, snap the inner section INTO the
preceding inner section of flue. Check connection 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.
Return Elbow Assembly
Return elbows install the same way as round
terminations and stabilizers:
Step 1. Hold return elbow over top of last
chimney section.
Step 2. Center inner slip section into inner flue
pipe-slip down.
Step 3. Center outer-locking section over outer
chimney pipe. Push down until locking joint has
firmly engaged.
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 39
).
Return
Elbow
Figure 39
Note: The return elbow assembly performs
the same function as a stabilizer. Consider this
when determining the need for a stabilizer.
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.
Combustion Air Kits
These appliances are equipped with an outside
(make-up) air door and integral actuator arm.
If the appliance is to be installed with an
outside air vent system, use only Models FAOK4 or FAOK-4LD Combustion Air Kits. These
kits come complete with detailed installation
instructions and all components necessary in
completing a combustion air vent system.
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 enclosure around the firebox. Failure to do
so may result in extensive and costly rework.
The control lever that operates the outside
combustion air valve has been pre-installed on
your fireplace. A coverplate has been mounted
over this control lever only if the outside air kit
has not been attached. The control lever is
located on the closed end of the fireplace opening behind the screen. To open the air damper,
turn the lever handle 1/2 turn counter clockwise
(or until lever can be moved upward), then retighten at desired open position. To close
damper, reverse procedure (
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.
see Figure 40
).
Control
Lever
Figure 40
Gas Line Connection
Install a ¹⁄₂" (13 mm) gas supply line through
fireplace wall for connection to a decorative
gas appliance inside the firebox. Outside, the
gas supply line must connect to a gas shut-off
valve usually recessed flush into the wall or
floor. The valve should be controlled by a
removable valve key for safety.
CAUTION: PLUMBING CONNECTIONS SHOULD
ONLY BE PERFORMED BY A QUALIFIED, LICENSED PLUMBER. MAIN GAS SUPPLY MUST
BE OFF WHEN PLUMBING GAS LINE TO FIREPLACE 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: 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/
fittings can result in corrosion over time. Never
use an open flame to check for leaks.
This provision is intended for connection to a
decorative gas appliance incorporating an automatic shut-off device and complying with the
Standard for Decorative Gas Appliances for
installation in vented fireplaces, ANSI Z21.60
(1991) or American Gas Association draft requirements for Gas-Fired Log Lighters for Wood
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.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
17
Glass Doors
If glass doors are to be installed on these
fireplaces, refer to specific installation instructions packed with the glass doors. Use only the
doors that are listed for use with these fireplaces. Use of other non-listed glass door on
these fireplaces may constitute a potential fire
hazard and is not recommended.
CAUTION: CERTAIN GLASS DOORS OVERLAP
THE BLACK METAL FACING OF THE FIREPLACE. IF THE FIREPLACE HAS BEEN FACED
WITH NONCOMBUSTIBLE MATERIALS, 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.
COLD CLIMATE INSULATION
If you live in a cold climate, it is especially
important to seal all cracks around the fireplace 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 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 fireplace or against chimney sections.
Note: A 2" air space must be preserved for all
combustible materials extending for any continuous length adjacent to the chimney.
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 fireplace or chimney system.
FIREPLACE FINISHES
Mantels and Trim
These fireplaces may sit directly on a combustible surface. A 2" air space is required between combustible framing and the chimney.
A 1" air space is required between combustible
framing and fireplace outer wrapper. In Canada,
the minimum height for a combustible mantel
is 18" (457 mm) above the fireplace opening.
Figure 41
shows typical Canadian installations. For installations other than Canada,
combustible mantels and trim may be installed 12" above the fireplace opening as per
NFPA 211, Section 7-2.3.3. and
Figure 42
. 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 operation of glass doors.
Finished
Combustible
Mantel
Wall
8" Max.
(203mm)
18" Min.
(457mm)
Fireplace
Opening
Canadian Installation
Header
Spacer
Figure 41
Finished Wall
Combustible
Mantel
and Trim
12"*
Min.
12"
Max.
Header
1 1/2"
Spacer
Hearth Extensions and Wall Shields
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 (
43 )
. Use a hearth extension constructed of a
durable noncombustible material having an
equal or better (lower k value) insulating value
of k = .84 BTU IN/FT
resistance that equals or exceeds r = 1.19 HR
2
°F FT
/BTU IN. With these values, determine
2
HR °F or a thermal
the minimum thickness/material required using the formula and
Page 19
Note: Any noncombustible material whose k
value is less than .84 or whose r value is more
than 1.19 is acceptable.
If the fireplace is installed on a combustible
floor, use the metal safety strips (provided)
on the floor extending half under the fireplace and half under the hearth extension
(refer to
Figures 6 & 7)
.
A wall shield is required where a continuous
perpendicular side wall is within 12" of the
fireplace opening (
Figure 44 )
40" H wall shield constructed of a durable,
noncombustible material having an equal or
better (lower k value) insulating value than k =
.84 BTU IN/FT2 HR °F. At no time may a
perpendicular side wall be located closer than
8" from the fireplace opening. See
If fireplace is installed diagonally across a 90°
corner; no wall shields are required.
see Figure
.
. Use a 40" W x
Figure 46
.
It is sometimes best to frame your fireplace
after it is positioned and the chimney is installed. Frame enclosure for chimney and fireplace with 2 x 4’s (or heavier) lumber.
Note: The header may rest on the two (2) metal
top spacers on top of the unit but the header
must not be notched to fit around the spacers.
Note: Only non-combustible wall finishing
materials are allowed on the front top of the
unit, from the top edge of spacers down. (See
Figures 41 and 42 ).
18
8 3/8"*
Fireplace
Opening
*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 42
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Hearth Extension Dimensions
A 20" (508 mm)
B 38" (965 mm)
C 8" (203 mm)
D 20" (508 mm)
E 12" (305 mm)
Figure 43
Metal Safety Strip
12"
(305mm)
Min.
E
20"
(508mm)
Outside Corner
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.
Example: If Micore 160 is to be used for the hearth extension fireplace,
how thick must this material be?
k
= k value per inch of
M
rM = r value per inch of
TM = minimum thickness required for
TS = standard thickness of the
kL = k value per inch of
rL = r value per inch of
TL = minimum thickness of
Note:
An asterix “*” indicates, it is a value taken from
Using the k formula:
Minimum k-value (per Inch) of Specified min.
thickness of = alternate material (k
alternate k-value (per inch) of listed
material (TM) of listed material (kM) material (TL)
TM (inches) = kM xT
TM (inches) = *.35 x 1"
.416 (inches) = .416 x 1"
Answer - The minimum required thickness of the Micore 160 is .417”,
therefore round up to nearest standard thickness available which is 1/2”.
Using the r formula:
Minimum r-value (per Inch) Specified min.
thickness of = of listed material x thickness
alternate r-value (per inch) of listed
material of alternate material material
T
(inches) = rL xT
M
TM (inches) = *1.19 x 1"
.416 (inches) = .416 x 1"
alternate
alternate
listed
material
listed
material
listed
*.84
*.84
r
M
*2.86
material
material
alternate
alternate
material
material
material
Table 1
) x thickness
M
L
L
.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
8"
(203mm)
D
C
A
B
20"
(508mm)
Answer - The minimum required thickness of the Micore 160 is .417”,
therefore round up to nearest standard thickness available which is 1/2”.
Listed Material
k (per inch) r (per inch) Listed Min.Thickness
Listed Material .84
** Approved Alternate Materials for Floor/Hearth Protection
AlternativeMaterials Thermal Values MinimumThickness
Kaowool M Board .47 2.13 .56" (1/2")
Micore 160™
U.S. Gypsum
Micore 300™
U.S. Gypsum
Durock™ Cement Board
U.S. Gypsum
Hardibacker™ 1.95 .513 2.32" (2-3/8")
Hardibacker 500™ 2.30 .435 2.74" (2-3/4")
Cultered Stone Hearth-
stone™
Wonderboard 3.23 .31 3.85" (3-7/8")
Super Firetemp M
Johns-Manville
Super Firetemp L
Johns-Manville
Face brick 9.00 .111 10.71" (10-3/4")
Common brick 5.00 .20 5.95" (6")
Cement mortar 5.00 .20 5.95" (6")
Ceramic tile 12.5 .08 14.88" (14-7/8")
Marble 11 .09 13.10" (13-1/8")
K
L
k (per inch)
K
M
.35 2.86 .42" (3/8")
.46 2.17 .55" (1/2")
1.92 .52 2.29" (2-1/4")
2.82 .355 3.36" (3-3/8")
.61 1.64 .73" (3/4")
.54 1.85 .64" (5/8")
1.19
r
L
r (per inch)
r
M
1
"
T
L
(rounded to nearest 1/8 inch)
Min. Thickness
T
M
Table 1
** 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 kvalue 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).
Note: Also see NFI (National Fireplace Institute) Certification Manuals showing
other acceptable calculation methods and acceptable alternate materials
which can be used.
19
If Less Than 12"
(305mm) Wall
Shield Required
Wall Shield
Not Required
On This Wall
20"
(508mm)
40"
(1016mm)
Metal Safety
Strip
40"
(1016mm)
Wall
Shield
20"
(508mm)
Inside Corner
Figure 44
Calculating Minimum Thickness if Multiple
Materials are Used
At times it is important to know what
combination of materials are acceptable for
use as floor protection. The “R values” are
used to determine acceptable combinations of
materials because “R values” are additive where
r and k values are not.
“R value” = 1/k = “r” x thickness of material
used
Example:
Given that the required “R value”
for a suitable floor protector used must be
equal to or greater than:
x TL = 1.19 x 1” = 1.19.”
“R” = r
L
The sum of all “R values” is: .70 + .10 +. 038
+ .10 = .938
This would NOT be an acceptable combination
of material for the hearth extension since the
total calculated “R value” of the materials used
is under the required “R value” of 1.19. An
additional layer of insulating materials must
be used.
Note:
Also see NFI Certification Manuals for
expanded explanation on calculating “R values” when multiple materials are used.
WARNING: THE CRACK BETWEEN THE
FIREPLACE AND THE HEARTH EXTENSION MUST BE SEALED WITH A NONCOMBUSTIBLE MATERIAL.
WARNING: WHEN INSTALLING HEARTH
EXTENSION IN FRONT OF A NON-CIRCULATING FIREPLACE MODEL, THE FIREPLACE MUST BE RAISED IF HEIGHT OF
HEARTH EXTENSION EXCEEDS 7" ABOVE
THE BOTTOM OF FIREPLACE (
FIGURE 45
FINISH TO YOUR TASTE
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.
Do not extend these materials beyond the black
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.
Seal all joints between the black facing and wall
surrounds to prevent air intrusion. Use noncombustible caulking material only to seal the
black metal facing to the surround material on
the finished wall.
Combustible materials may project beyond the
sides of the fireplace opening as long as they
are kept within the shaded areas illustrated in
).
Figure 46
Combustible
Materials
Allowed In
Shaded Area
“Safe Zone”
15 ⁷⁄₈”
.
11 ⁷⁄₈”
45°
Min. Distance To
8"
Protected Side Wall
12"
Min. Distance To
Unprotected Side Wall
Fireplace
8"
If it is desired to elevate a marble hearth extension to a level of 5” or more above the floor
surface. What combination of noncombustible materials can be used to accomplish this?
If common brick is used so that the 3 1/2”
dimension is the height, “R” for the common
brick becomes:
brick
“R”M = rM x TS = 0.20 x 3 1/2" = .70
Using 1/2” of mortar to set the brick, “R” for
the mortar is calculated as follows:
mortar
“R”M = rM x TS = 0.20 x 1/2" = .10
Next, a 3/4" marble slab set in 1/2" mortar cov-
ers the brick, “R” for the marble and mortar
becomes:
marble
“R”M = rM x TS = 0.05 x 3/4" = .038
mortar
“R”M = rM x TS = 0.20 x 1/2" = .10
6"
Max. Thickness Of Hearth Extension
When Models Are On The Floor
Figure 45
Secure the hearth extension to the floor to
prevent possible shifting.
Figure 46
Model Part Number Weight
CR-3835R P/N 015014 210 lbs.
CR-3835L P/N 015013 210 lbs.
20
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
INSTALLATION COMPONENTS
The following items are available for use in the
installation of this appliance.
63L10 FTF8-12
63L13 FTF8-18
63L14 FTF8-36
63L15 FTF8-48
63L16 FTF10-12
63L17 FTF10-18
Chimney Section 63L18 FTF10-36
62L92 FTF8-18C
62L93 FTF8-36C
Canadian 62L94 FTF10-18C
Outside Chimney 62L95 FTF10-36C
63L30 F8FS30
63L32 F8FS30-2
Firestop Spacer (30°) 63L37 F10FS30-2
63L22 FTF8-ES30
Offset/ Return 63L23 FTF10-ES30
Package (30°) 22154 FTF10/8-ES30
Combination 63L28 FTF8-OR15
Offset/Return Elbow 63L34 FTF10-OR15
Starter Section 8345 FTF8-SS
63L38 F8F6
63L39 F8F12
63L40 F10F6
Flashing 63L41 F10F12
Storm Collar 63L59 FSC
Locking Band 63L60 FLB
Attic Shield Assembly
Firestop Spacer 63L67 FTF8-FSAS
Canada Only 63L68 FTF10-FSAS
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
21
INSTALLATION COMPONENTS
Chase Termination 63L51 FTF8-CT2
(Square) 63L52 FTF10-CT2
63L29 F8FS
63L31 F8FS-2
Firestop Spacer (Flat) 63L36 F10FS-2
Cold Climate Kit 63L63 FTF10-CCK1-LD
Chase Termination 63L45 FTF8-CTDT
(Round) 63L46 FTF10-CTDT
96L20 FTF8-CTT
Chase Termination 96L21 FTF10-CTT
Outside Combustion Air Kits
(with duct) 81L87 FOAK
(without duct) 81L88 FOAK-LD
63L42 FTF8-CTD
Round Termination 63L43 FTF10-CTD
Stabilizer 63L26 FTF10-S4
63L25 FTF8-S4
Contains:
3 FTF8-36
FTF8-CP7
LENNOX
CHIMNEY
ASSEMBL Y
FTF8-CP7
LENNOX
CHIMNEY ASSEMBLY
LENNOX
1 F8FS
1 F8F6
1 FTF8-CTD
Chimney Pack
Conventional 63L70 FTF8-CP7
Contains:
4 FTF10-36
FTF10-CP8
LENNOX
CHIMNEY
ASSEMBL Y
FTF10-CP8
LENNOX
CHIMNEY ASSEMBLY
LENNOX
1 F10FS
1 F10F6
1 FTF10-CTD
Chimney Pack
Conventional 63L71 FTF10-CP8
Arch Type Termination 96L23 FTF10-ATT
96L22 FTF8-ATT
22
Chase Termination 63L48 FTF8-CT1
(Square) 63L49 FTF10-CT1
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
NOTES:
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
23
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
P/N 850,048M REV. N/C 01/2007
24
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
1110 West Taft Avenue
Orange, CA 92865
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