INSTALLATION
INSTRUCTIONS
MERIT® SERIES
42" Wood Burning Fireplaces
P/N 850,047M REV. N/C 01/2007
MODELS
RD-42 HC-42
RD-42-H HC-42-H
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 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.
WH Report No. J9902-5865C-231
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
1
TABLE OF CONTENTS
Safety Rules .................................... page 2
Tools and Building Supplies ............ page 2
Precautions ..................................... page 3
Introduction..................................... page 3
Clearances/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
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
Vertical Elevation Chart................... page 12
Offset Calculations........................... page 12
Offset Elevation Chart ..................... page 13
Installing Offsets.............................. page 14
Optional Equipment Considerations. page 14
Forced Air Kits ................................. page 14
Combustion Air Kits ........................ page 15
Gas Line Connection........................ page 15
Vent Free Appliances ....................... page 15
Glass Doors..................................... page 16
Cold Climate Insulation.................... page 16
Fireplace Finishes ............................ page 16
Mantels and Trim............................. page 16
Hearth Extensions............................ page 16
Finish Requirements........................ page 18
Installation Components.................. page 19
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
Security Chimney's FTF8 (8" 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, including unlisted “vent free” log sets.
Listed “vent-free” log sets may be operated
with the damper closed.
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)
2
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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.
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.
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.
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.
The "C" models are designed as heat circulating
fireplaces and may be fitted with accessory fans.
TYPICAL INSTALLATION
These fireplaces have been tested and listed
by Warnock Hersey (Report No. J99025865C-231) 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.
These fireplaces have been tested for installation in Canada to ULC-S610. For installations
in Canada, the chimney clearance to combustibles must be 2 inches and the Cold
Climate Kit must be installed.
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.
When complete these fireplace systems consists 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).
CLEARANCES AND HEIGHT
REQUIREMENTS
The fireplace may be placed on or near normal
construction materials*. The combustion air kit,
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
installed 12" above the opening of the fireplace as
per NFPA 211, Section 7-2.3.3. In Canada, the
minimum is 18" above the fireplace opening.
The minimum installed height of the completed
fireplace system is 15' 0". The maximum height
is 60' 0".
Radiant Model Shown
Figure 1
Chimney and
Termination
Outside
Combustion
Air Kit
(Optional)
Circulating Model Shown
Blower Kit
(Optional)
Chimney and
Termination
Outside
Combustion
Air Kit
(Optional)
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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.
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 Chimneys FTF8 chimney
System only. Always use Security Chimneys
FTF8 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
3
Insulate Joists
Same As Ceiling
Draft Stops
Chimney Height
The total height of your completed fireplace
system from the surface the fireplace rests on
to the chimney top must not exceed 60' and
must also meet minimum height requirements.
Refer to the minimum system height chart.
Minimum System Height
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.
Firestop
CTDT
Termination
Note: NonCombustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
Optional
Insulation
In Outside
Walls Of
Chase
8'
Level
Solid
Continuous
Surface
Outside
Insulation
(Thermal Barrier)
Base
Figure 2
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.
Security's FTF8 Pipe
Vertical Installation 15' 0"
One Offset 15' 0"
Two Offsets 25' 0"
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
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 (
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.
Damper
Closed
Lintel
Damper
Open
Combustion
Air Actuator
Figure 3
Figure 3
Hearth
Hearth
Optional
Outside Chase
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".
DO NOT permanently place furniture or other
items such as decorative pillows within 60" of
the fireplace front face.
).
12”
45°
Black Portion Of Frame
Not To Be Covered With
Combustible Materials
1”
Door
Opening
12”
Safe
Zone
Figure 5
Wall
Covering
4
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
ASSEMBLY STEPS
Metal Safety Strip Floor
Hearth
Extension
Platform
1" (25 mm) Space
Maintain
1" (25 mm)
Air Space
At Back
And Sides
Note: Hearth extensions must not interfere with
circulating grillwork
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.
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.
Top Spacer
Maintain
1" (25 mm)
Air Space
At Back
And Sides
Hearth
1" (25 mm) Space
Metal Safety Strip Floor
Note: Hearth extensions must not interfere with
circulating grillwork
Extension
Figure 6
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:
CLEARANCES
Minimum clearance to combustibles for the
appliance is as follows: sides and back - 1" (25
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.
Figures 6, 7
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.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
5
FIREPLACE SPECIFICATIONS
8 ³⁄₈"
(213 mm)
12 ¹⁄₂"
(318 mm)
16 ⁵⁄₁₆"
(414 mm)
1 ¹⁄₂"
Metal Safety Strips
Figure 8
Blocking
Metal Safety Strips
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.
IMPORTANT: UNDER NO CIRCUMSTANCES
CAN THE FIREPLACE TOP SPACERS (
10
) 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, 23
⁷⁄₈
" (606 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 23
⁷⁄₈
" (606 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.
Gas Line
Access
23 ¹⁄₂"
(597 mm)
Left Side
8 ¹⁄₂"
(216 mm)
22 ⁵⁄₁₆"
(566 mm)
12 ¹⁄₂"
(318 mm)
(1187 mm)
(1051 mm)
38 ⁷⁄₁₆"
(976 mm)
41"
(1041 mm)
46 ³⁄₄"
Front
Combustion
Gas Line
41 ³⁄₈"
31 ⁹⁄₁₆"
(802 mm)
Air Inlet
Access
17 ⁵⁄₁₆"
(439 mm)
2 ⁷⁄₈"
(73 mm)
13 ⁵⁄₈"
(346 mm)
Right Side
(197 mm)
(251 mm)
Junction
Box
22 ⁷⁄₈"
(581 mm)
Fireplace
Top Spacer
46 ³⁄₈"
(1178 mm)
7 ³⁄₄"
Fireplace Top Spacer
9 ⁷⁄₈"
(1178 mm)
10"
(254 mm)
23 ¹⁄₂"
(597 mm)
46 ³⁄₈"
The header may rest on the top metal spacers,
but must not be notched to fit around them.
Consult all local codes.
6
1"
(25 mm)
Figure 10
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
48 ³⁄₄"
(1238 mm)
Top View
46 ³⁄₄"
(1187 mm)
FRAMING SPECIFICATIONS
Framing Dimensions
B
A
Fireplace Framing
Figure 11
Back Wall of Chase/Enclosure
Including Finising Materials if any
A
Inside Chase
Figure 12
Header
FOAK Combustion
Air Kit
G
Rough
Framing Face
(Unfinished Shown)
A 48" 1219 mm
B 46 ¹⁄₂" 1181 mm
C 33" 838 mm
D 17 ¹⁄₂" 445 mm
E 81" 2057 mm
F 40 ³⁄₈" 1026 mm
G 24" 607 mm
H 23" 584 mm
J 57 ¹⁄₄" 1454 mm
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
other thickness materials, calculations
will need to be made.
Note: C and G dimensions include 1"
clearance to combustibles.
Framing Dimensions for Ceiling
Flue Type A B
FTF8 Vertical 16 ¹⁄₂" 16 ¹⁄₂"
(419 mm) (419 mm)
FTF8 Offset 30° 16 ¹⁄₂" 27"
(419 mm) (686 mm)
Back Wall of
Chase/Enclosure
Including Finising
Materials
if any
J
Rough
Framing Face
(Unfinished Shown)
Figure 14
B
Figure 15
C
FOAK Combustion
Air Kit - Optional
D
A
E
Corner Installation
Ceiling Framing
F
A
Back Wall of Chase/Enclosure
Including Finising Materials
(Unfinished Shown)
if any
H
Rough
Framing Face
Outside Chase
A
FOAK
Combustion
Air Kit - Optional
G
Figure 13
Framing Dimensions for Roof
Pitch C D*
0/12 16 ¹⁄₂" 16 ¹⁄₂"
(419 mm) (419 mm)
6/12 16 ¹⁄₂" 19"
(419 mm) (483 mm)
12/12 16 ¹⁄₂" 23 ¹⁄₂"
(419 mm) (597 mm)
* Perpendicular to roof ridge
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
C
D
Roof Framing
Figure 16
7
Step 4. Fireplace should be secured to side
framing members using the full length nailing
tabs at the top and bottom of the fireplace front
face. Use 8d nails or equivalent (
8d Nail Or
Equivalent
Figure 17
).
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 Canadian Installations Proceed
with Steps 5 through 8
Step 5. Attach the cold climate kit, Model
FTF8-CCK1-LD, around the chimney collar with
the screws provided (
Note: CCK1-LD model requires a 6" diameter
Class 0 metallic air duct, acquired locally by
installer.
see Figure 18
).
Note: If the fireplace is installed against an
inside wall, the Class 0 metallic 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 that nothing blocks the hood
opening. This air duct must never terminate
higher than the fireplace chimney.
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
collar on inlet hood using two (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.
INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
of the damper, as described on page 4, (
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" CHIMNEY
AIR SPACE TO COMBUSTIBLE FRAMING MEMBERS THROUGHOUT VERTICAL OR OFFSET
CHIMNEY INSTALLATION.
A minimum 2" air space must be reserved for
all combustible materials extending for any
continuous length surrounding the chimney.
refer to
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 (offset chimney), use 30° firestop spacer,
Model F8FS30-2. 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 20 and 21 ).
Room Above
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.
Step 7. Route the Class 0 metallic air duct out
the back wall or side wall, up through the ceiling
or floor joists to an outside wall. The air duct’s
inlet should be located above any anticipated
snow level.
8
Reference
Figures 15 and 16
and charts Framing Dimensions for Ceiling and Roof, which
specify minimum ceiling and roof dimensions.
In new construction, to determine chimney
center line, use plumb line from roof or ceiling
above fireplace to center of flue collar on fireplace.
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)
(
see Figure 19
). Then plumb from ceiling or
roof level directly above hole which has just
been completed.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Firestop Spacer
Figure 20
Attic Above
Firestop Spacer
Figure 21
CHIMNEY 30° OFFSET THROUGH FLOOR
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 in
Figures 22 and 23
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.
Attic Space
F8FS30-2
Firestop Spacer
2" Min.
Air Space
10'
Max.
Figure 22
Room Above
F8FS30-2
Firestop Spacer
. Support the
2" Min.
Air Space
FTF8-S4 Stabilizer
30° Firestop
And Attic Above
2" Min.
Air Space
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.
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
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 25
).
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 27
).
Always maintain 2" minimum air space to combustible materials and always check each chimney joint (inner and outer) to ensure proper
engagement. Check vertical alignment of chimney so that it projects from the roof in true
vertical position.
2" Min. Air Space
To Combustibles
Figure 27
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 38
).
2" Min.
Air Space
10'
Max.
FTF8-S4 Stabilizer
30° Firestop
And Room Above
Figure 23
For Canada Only
When installing the chimney system through
an open attic space, the attic shield assemblyfirestop spacer must be used (
installation is required only for use in Canada.
Open Attic Space
Figure 24
Note: For Canadian installations, all chimney
installed outside the building must be constructed
with galvalume (outer sections only) effective
January 1, 1992. The appropriate model designations are located in the back of this manual.
Figure 24
). This
Figure 25
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
).
Locking
Tabs
(Lances)
Figure 26
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Step 5. The height of vertical chimney pipe
supported only by the fireplace must not exceed 30'. Chimney heights above 30' must be
supported by a Model FTF8-S4 stabilizer installed at 30' intervals.
Note: The Model FTF8-S4 adds 3" net effective
height to the total chimney system.
Install the Model FTF8-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. Attach successive lengths of chimney
pipe directly to stabilizer using same techniques as described in Step 4 (
Figure 28
FTF8-S4 Stabilizer
).
Figure 28
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 roof flashing based on pitch of roof. Use chart below for
selection:
Roof Pitch Model
Flat to 6/12 F8F6
Step 8. The standard Security Chimneys FTF8
roof flashing assemblies include a storm collar.
Slide the storm collar over outer chimney, rest
on flashing spacers and align with top surface
of flashing. Insert tab in slot, pull tight and bend
tab back over slot. Seal storm collar to outer
chimney with roof caulking or mastic around
entire circumference of pipe. Also add extra
roof caulking to the tab/slot area to seal completely against water penetration (
Figure 31
).
Check all joints very carefully to ensure no
water intrusion can take place.
Step 10. Using a FTF8-CTD Round Termination:
1. Hold the FTF8-CTD over top of last chimney
section (
Figure 33
).
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.
6/12 to 12/12 F8F12
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 29
). Again, check the vertical
position of the chimney and the 2" minimum air
space to combustibles.
FTF8 Chimney
Flashing Spacers
FTF8 Flashing
Do Not Seal
Figure 29
Note: Do not caulk or seal the ventilating open-
ings.
Step 7. Secure flashing by nailing along the
perimeter into roof using 8d nails or equivalent.
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 30
).
Locking Band
Waterproof
Caulk
Figure 31
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 31
).
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 32 ). Guy wires are not
supplied by the manufacturer.
Roof Ridge
CTD
Termination
Chimney
Figure 33
4. Pull up slightly on CTD to ensure locking joint
has firmly engaged.
Using a FTF8-CTDT Chase Termination:
Refer to specific installation instructions included with the FTF8-CTDT chase termination
for clearance and installation details.
Using a FTF8-CT1 Chase Termination:
Refer to specific installation instructions included with FTF8-CT1 chase terminations for
clearance and installation details.
Using a FTF8-CT2 Chase Termination:
Refer to specific installation instructions included with FTF8-CT2 chase terminations for
clearance and installation details.
Using a FTF8-CTT Chase Termination:
Refer to specific installation instructions included with FTF8-CTT chase terminations for
clearance and installation details.
Figure 30
10
Using a FTF8-ATT Chase Termination:
Refer to specific installation instructions included with FTF8-ATT chase terminations for
clearance and installation details.
120°
Figure 32
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Less Than 10'
3'
Min
2' Min.
10'
3'
Min
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:
Figure 34
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
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.
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 34
).
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 35
24"
).
CTD
18"
CTDT
Figure 35
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.
FTF8 CHIMNEY COMPONENT
CALCULATIONS
The minimum installed height of the completed fireplace system is 15' 0". The maximum height is 60' 0".
The Fireplace = 45 ³⁄₈"
FTF8-12 = 10 ¹⁄₄"
FTF8-18 = 16 ¹⁄₄"
FTF8-36 = 34 ¹⁄₄"
FTF8-48 = 46 ¹⁄₄"
FTF8-CTD Termination = 4"
FTF8-CT1 Termination = 12" to 18"
FTF8-CT2 Termination = 15" to 23"
FTF8-CTDT Termination = 12" to 18"
FTF8-CTT Termination = 6" to 14"
FTF8-ATT Termination = 8" to 14"
FTF8-S4 Stabilizer * = 3"*
* Required for every 30' 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. A 30° offset elbow, angling in any direction, may be the first component used off the top of the fireplace flue collar.
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 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 chimney used between elbows cannot exceed 20'
(
Figure 37
). 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 38
(
).
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.
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
FTF8-30 offset elbow in place of a FTF8-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
stabilizers as shown in
Figures 22 and 23
Figure 28
.
and
FTF8 VERTICAL ELEVATION CHART
Height Of Number Of FTF8
Chimney Only Chimney Lengths
).
Inches Feet/Inches 12" 18" 36" 48"
11 0 11 1 0 0 0
17 1 5 0 1 0 0
21 ¹⁄₄ 19¹⁄₄ 2000
27 ¹⁄₄ 23¹⁄₄ 1100
35 2 11 0 0 1 0
47 3 11 0 0 0 1
51 ¹⁄₄ 43¹⁄₄ 0110
57 ¹⁄₄ 49¹⁄₄ 1001
63 ¹⁄₄ 53¹⁄₄ 0101
67 ¹⁄₄ 57¹⁄₄ 2001
73 ¹⁄₄ 61¹⁄₄ 1101
81 ¹⁄₄ 69¹⁄₄ 0011
93 ¹⁄₄ 79¹⁄₄ 0002
97 ¹⁄₄ 81¹⁄₄ 0111
102 ¹⁄₂ 86¹⁄₂ 1002
109 ¹⁄₄ 91¹⁄₄ 0102
113 ¹⁄₂ 95¹⁄₂ 2002
119 ¹⁄₂ 911¹⁄₂ 1102
127 ¹⁄₄ 10 7 ¹⁄₄ 0012
137 ¹⁄₂ 11 5 ¹⁄₂ 1012
139 ¹⁄₄ 11 7 ¹⁄₄ 0003
143 ¹⁄₂ 11 11 ¹⁄₂ 0112
149 ¹⁄₂ 12 5 ¹⁄₂ 1003
155 ¹⁄₂ 12 11 ¹⁄₂ 0103
159 ³⁄₄ 13 3 ³⁄₄ 2003
165 ³⁄₄ 13 9 ³⁄₄ 1103
173 ¹⁄₂ 14 5 ¹⁄₂ 0013
183 ³⁄₄ 15 3 ³⁄₄ 1013
185 ¹⁄₂ 15 5 ¹⁄₂ 0004
189 ³⁄₄ 15 9 ³⁄₄ 0113
195 ³⁄₄ 16 3 ³⁄₄ 1004
201 ³⁄₄ 16 9 ³⁄₄ 0104
206 17 2 2 0 0 4
212 17 8 1 1 0 4
219 ³⁄₄ 18 3 ³⁄₄ 0014
230 19 2 1 0 1 4
231 ³⁄₄ 19 3 ³⁄₄ 0005
236 19 8 0 1 1 4
242 20 2 1 0 0 5
248 20 8 0 1 0 5
252 21 0 2 0 0 5
258 21 6 1 1 0 5
266 22 2 0 0 1 5
276 23 0 1 0 1 5
278 23 2 0 0 0 6
282 23 6 0 1 1 5
288 24 0 1 0 0 6
294 ³⁄₄ 24 6 ³⁄₄ 0106
298 ¹⁄₄ 24 10 ¹⁄₄ 2006
304 ¹⁄₄ 25 4 ¹⁄₄ 1106
312 26 0 0 0 1 6
322 ¹⁄₄ 26 10 ¹⁄₄ 1016
324 27 0 0 0 0 7
328 ¹⁄₄ 27 4 ¹⁄₄ 0116
334 ¹⁄₄ 27 10 ¹⁄₄ 1007
340 ¹⁄₄ 28 4 ¹⁄₄ 0107
344 ¹⁄₂ 28 8 ¹⁄₂ 2007
350 ¹⁄₂ 29 2 ¹⁄₂ 1107
358 ¹⁄₄ 29 10 ¹⁄₄ 0017
368 ¹⁄₂ 30 8 ¹⁄₂ 1017
370 ¹⁄₄ 30 10 ¹⁄₄ 0008
374 ¹⁄₂ 31 2 ¹⁄₂ 0117
380 ¹⁄₂ 31 8 ¹⁄₂ 1008
Height Of Number Of FTF8
Chimney Only Chimney Lengths
Inches Feet/Inches 12" 18" 36" 48"
386 ¹⁄₂ 32 2 ¹⁄₂ 0108
390 ³⁄₄ 32 6 ³⁄₄ 2008
396 ³⁄₄ 33 0 ³⁄₄ 1108
404 ¹⁄₂ 33 8 ¹⁄₂ 0018
414 ³⁄₄ 34 6 ³⁄₄ 1018
416 ¹⁄₂ 34 8 ¹⁄₂ 0009
420 ³⁄₄ 35 0 ³⁄₄ 0118
426 ³⁄₄ 35 6 ³⁄₄ 1009
432 ³⁄₄ 36 0 ³⁄₄ 0109
437 36 5 2 0 0 9
443 36 11 1 1 0 9
450 ³⁄₄ 37 6 ³⁄₄ 0019
461 38 5 1 0 1 9
462 ³⁄₄ 38 6 ³⁄₄ 00010
466 ³⁄₄ 38 10 ³⁄₄ 0119
472 ³⁄₄ 39 4³⁄₄ 10010
478 ³⁄₄ 39 10 ³⁄₄ 01010
483 40 3 2 0 0 10
489 40 9 1 1 0 10
496 ³⁄₄ 41 4 ³⁄₄ 00110
507 42 3 1 0 1 10
508 ³⁄₄ 42 4 ³⁄₄ 00011
513 42 9 0 1 1 10
519 43 3 1 0 0 11
525 43 9 0 1 0 11
529 ¹⁄₄ 44 1 ¹⁄₄ 20011
535 ¹⁄₄ 44 7 ¹⁄₄ 11011
543 45 3 0 0 1 11
553 ¹⁄₄ 46 1 ¹⁄₄ 10111
555 46 3 0 0 0 12
559 ¹⁄₄ 46 7 ¹⁄₄ 01111
565 ¹⁄₄ 47 1 ¹⁄₄ 10012
571 ¹⁄₄ 47 5 ¹⁄₄ 01012
575 ¹⁄₂ 47 11 ¹⁄₂ 20012
581 ¹⁄₂ 48 5 ¹⁄₂ 11012
589 ¹⁄₄ 49 1 ¹⁄₄ 00112
599 ¹⁄₂ 49 11 ¹⁄₂ 10112
601 ¹⁄₄ 50 1 ¹⁄₄ 00013
605 ¹⁄₂ 50 5 ¹⁄₂ 01112
611 ¹⁄₂ 51 11 ¹⁄₂ 10013
617 ¹⁄₂ 51 5 ¹⁄₂ 01013
621 ¹⁄₂ 51 9 ¹⁄₂ 20013
627 ¹⁄₂ 52 3 ¹⁄₂ 11013
635 ¹⁄₂ 52 11 ¹⁄₂ 00113
645 ¹⁄₂ 53 9 ¹⁄₂ 10113
647 ¹⁄₂ 53 11 ¹⁄₂ 00014
651 ¹⁄₂ 54 3 ¹⁄₂ 01113
657 ¹⁄₂ 54 9 ¹⁄₂ 10014
663 ¹⁄₂ 55 3 ¹⁄₂ 01014
667 ³⁄₄ 55 7 ³⁄₄ 20014
673 ³⁄₄ 56 1 ³⁄₄ 11014
681 ¹⁄₂ 56 9 ¹⁄₂ 00114
691 ³⁄₄ 57 7 ³⁄₄ 10114
693 ¹⁄₂ 57 9 ¹⁄₂ 00015
697 ³⁄₄ 58 1 ³⁄₄ 01114
703 ³⁄₄ 58 7 ³⁄₄ 10015
709 ³⁄₄ 59 1 ³⁄₄ 01015
714 59 6 2 0 0 15
720 60 0 1 1 0 15
727 ³⁄₄ 60 7 ³⁄₄ 00115
738 61 6 1 0 1 15
739 ³⁄₄ 61 7 ³⁄₄ 00016
744 62 0 0 1 1 15
12
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
A
1
OFFSET ELEVATION CHART
B
1
Figure 36
A
A B FTF8-ES30 Number of FTF8 Chimney Sections
Offset Height Offset/Return FTF8-S4
(Inches) (Inches) Elbow Stabilizer 12" 18" 36" 48"
415³⁄₄ 100000
20'
Max.
Return
Elbow
924¹⁄₂ 101000
Stabilizer
12 29 ³⁄₄ 100100
14 ¹⁄₄ 33 ¹⁄₂ 102000
17 ¹⁄₄ 38 ¹⁄₂ 101100
10' Max.
20 ¹⁄₄ 43 ³⁄₄ 100200
21 45 ¹⁄₄ 1 0 0010
Offset
Elbow
22 ¹⁄₄ 47 ¹⁄₂ 1 0 2 1 0 0
25 ¹⁄₄ 52 ¹⁄₂ 1 0 1 2 0 0
26 ¹⁄₄ 54 ¹⁄₄ 101010
27 55 ³⁄₄ 100001
28 ¹⁄₄ 57 ³⁄₄ 1 0 0 3 0 0
29 ¹⁄₄ 59 ¹⁄₄ 100110
31 ¹⁄₄ 63 1 0 2010
32 ¹⁄₄ 64 ¹⁄₂ 101001
34 ¹⁄₄ 68 ¹⁄₄ 1 0 1110
35 ¹⁄₄ 69 ³⁄₄ 100101
37 ¹⁄₄ 73 ¹⁄₄ 100210
A
2
38 ¹⁄₄ 75 1 0 0 0 2 0
39 ¹⁄₄ 77 1 0 2110
41 ¹⁄₂ 80 ¹⁄₂ 101400
C
2
A
1
B
2
43 ¹⁄₄ 83 ³⁄₄ 1 0 1 0 2 0
44 ¹⁄₄ 85 ¹⁄₄ 100011
45 ¹⁄₄ 87 ¹⁄₂ 1 0 0 3 1 0
46 ¹⁄₄ 89 1 0 0 1 2 0
48 ¹⁄₄ 91 ¹⁄₂ 1 0 2 0 2 0
49 ¹⁄₄ 94 ¹⁄₄ 101011
B
C
1
1
50 ¹⁄₄ 95 ³⁄₄ 100002
51 ¹⁄₄ 97 ³⁄₄ 1 0 1 1 2 0
54 ¹⁄₄ 103 1 0 0 2 2 0
55 ¹⁄₄ 104 ¹⁄₂ 101002
56 ¹⁄₂ 106 ¹⁄₂ 1 0 2 1 2 0
58 ¹⁄₄ 109 ³⁄₄ 100102
61 ³⁄₄ 116 1 1 1 0 3 0
64 ³⁄₄ 121 ¹⁄₄ 110130
67 124 ³⁄₄ 112030
68 ³⁄₄ 128 1 1 0 0 1 2
2
70 130 1 1 1 1 3 0
73 135 ¹⁄₄ 1 1 0230
C
2
A
1
B
2
74 ³⁄₄ 138 ¹⁄₄ 110003
79 145 ¹⁄₂ 1 1 1 0 4 0
80 147 ¹⁄₄ 1 1 1 0 0 3
82 150 ³⁄₄ 1 1 0 1 4 0
82 ¹⁄₄ 152 1 1 0 1 0 3
B
C
1
1
Figure 37
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
13
Joints
INSTALLING OFFSETS
First, review the Offset Elevation Chart and
Figure 38
for reference.
Step 5. Secure support straps to framing
members by nailing under tension in sheer
(
Figure 41
).
Chimney
Section
No Screws Required In
4'
Screws Required At
Every Joint Past 6'
6'
Joints For First 6' of Offset
No. 8 x 1/2" SMS
Figure 38
Underside Of Chimney
Figure 39
FTF8-E30 Return Elbow*
Chimney Section (S)
FTF8-30 Offset Elbow*
A
*Part of Offset/Return Package Model FTF8-ES30
Figure 40
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
Return
Elbow
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.
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
B
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.
Figure 41
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.
OPTIONAL EQUIPMENT
CONSIDERATIONS
Blower Kits (Circulating Models Only)
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.
Note: These fireplace models require a wall
switch for fan operation. Refer to the installation instructions included with the Blower Kits
for installation details.
THE FIREPLACE MUST BE WIRED TO THE
HOUSE ELECTRICAL SYSTEM AT THE TIME
OF INSTALLATION IN ORDER FOR THE OPTIONAL FANS TO OPERATE, (SEE
42 AND 43
).
Note: The utilization of fans will increase the
air flow around the firebox. However, only a
minimal increase in heat output should be
anticipated.
FIGURES
Step 4. Pull up slightly on return elbow to
ensure locking joint has firmly engaged.
14
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
POWER TO THE FIREPLACE
The Optional Blower Kit
Operates on 115 volt 60 Hz
150 watts AC
HOUSE
WIRING
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.
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.
GROUND
WIRE
COVER PLATE
House Wiring Must Be Secured
With The Appropriate Electrical
Connector To The Fireplace
Convenience Outlet Wiring
Replace Cover Plate
After Electrical
Hook-Up
Figure 42
THIS FIREPLACE IS NOT INTENDED TO BE
USED AS A SUBSTITUTE FOR A FURNACE TO
HEAT AN ENTIRE HOME. USE FOR SUPPLEMENTARY HEATING ONLY.
BLOWER THREE
PRONGED PLUG TO
GROUNDED OUTLET
Figure 43
The FBK-100/200 Blower Kits are design certified by Warnock Hersey for use with these
appliances.
Always check local building codes. Installation
of the FBK Blower Kits must comply with local
regulations as well as the National Electric
Code.
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 FireCraft Models FAOK-4
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.
Locate the actuator arm along the right side of
the appliance firebox opening and refer to
Figure 44
.
Combustion
Air Actuator
Pull Forward to Open,
Push Back to Close
Figure 44
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
back to close. To "lock" the combustion air door
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 slotted opening.
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.
Gas Line Connection
Install a ¹⁄₂" gas supply line through fireplace
wall for connection to a decorative gas appliance inside the firebox. Outside, the gas supply
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.
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: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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.
Vent Free Appliances
This unit has been tested and approved to
ANSI/IAS/AGA Z21.11.2 for use with unvented
gas appliances and complies with the standard for Factory-Built fireplaces, UL 127, when
installed with unvented gas log sets. Special
instructions with regards to mantle installations must be taken into consideration when
installing such appliances.
The unit has been tested for use with any
unvented log sets having a maximum rating of
32,000 BTU. The minimum mantle configuration for these log sets are outlined in
Log sets with 40,000 BTU may be installed
provided that no combustible mantle projections are placed lower than 18 inches from the
fireplace opening.
These fireplaces have been marked with a
maximum rating of 32,000 BTU to assure that
homeowners do not exceed the allowable limits for all allowed installations of mantles. That
limit may be increased to 40,000 BTU, provided that the mantle installed complies with
the 18-inch limitation and a copy of these
instructions are available.
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 FIREPLACE OPENING.
CAUTION: WHEN USING THE DECORATIVE
GAS APPLIANCE, THE FIREPLACE DAMPER
MUST BE SET IN THE FULLY OPEN POSITION.
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.
Figure 46
.
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 INSIDE 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 refractory material is very thin in this area and is easily
removed. Once a small hole has been made,
continue tapping until you have reached sufficient diameter for the gas line to fit through. The
entire knockout does not have to be removed.
Remove insulation in the gas line channel.
IMPORTANT: REPACK INSULATION MATERIAL
IN SQUARE HOLE AROUND GAS LINE, INTERIOR AND EXTERIOR OF FIREPLACE, TO SEAL.
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
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
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.
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.
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 46
. 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
Wall
8" Max.
(203mm)
Figure 45
shows typical
Header
Finished Wall
12"
Max.
Combustible
Mantel
and Trim
*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)
12"*
Min.
9"*
Typical Installation
Fireplace
Opening
Header
1 1/2"
Spacer
Figure 46
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 (
47 )
. Use a hearth extension constructed of a
durable noncombustible material having an
equal or better (lower k value) insulating value
of k = .43 BTU IN/FT2 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 using the formula and
Page 17
Note: Any noncombustible material whose k
value is less than .43 or whose r value is more
than 2.33 is acceptable.
see Figure
.
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.
16
Combustible
Mantel
18" Min.
(457mm)
Fireplace
Opening
Canadian Installation
Figure 45
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Spacer
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 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 =
.54 BTU IN/FT2 HR °F. At no time may a
perpendicular side wall be located closer than
9" from the fireplace opening.
If fireplace is installed diagonally across a 90°
corner; no wall shields are required.
Hearth Extension Dimensions
A 16"
B 38"
C 8"
D 54"
Note: To convert inches to millimeters
divide by 0.03937
Figure 47
C
B
D
C
A
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"
.875 (inches) = .875 x 1"
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:
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) = *2.33 x 1"
.875 (inches) = .875 x 1"
alternate
alternate
listed
material
listed
material
listed
*.43
*.43
r
M
*2.86
material
material
alternate
alternate
material
material
material
Table 1
) x thickness
M
L
L
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
.
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”.
Listed Material
k (per inch) r (per inch) Listed Min.Thickness
Listed Material
** Approved Alternate Materials for Floor/Hearth Protection
AlternativeMaterials Thermal Values MinimumThickness
Kaowool M Board .47 2.13 1.09" (1-1/8")
Micore 160™
U.S. Gypsum
Micore 300™
U.S. Gypsum
Durock™ Cement Board
U.S. Gypsum
Hardibacker™ 1.95 .513 4.53" (4-1/2")
Hardibacker 500™ 2.30 .435 5.35" (5-3/8")
Cultered Stone Hearth-
stone™
Wonderboard 3.23 .31 7.51" (7-1/2")
Super Firetemp M
Johns-Manville
Super Firetemp L
Johns-Manville
Face brick 9.00 .111 20.93" (20-7/8")
Common brick 5.00 .20
Cement mortar 5.00 .20
Ceramic tile 12.5 .08
Marble 11.0 .09
0.43
K
L
k (per inch)
K
M
.35 2.86 .81" (7/8")
.46 2.17
1.92 .52 4.47" (4-1/2")
2.82 .355 6.56" (6-1/2")
.61 1.64 1.42" (1-3/8")
.54 1.85
2.33
r
L
r (per inch)
r
M
1
"
T
L
(rounded to nearest 1/8 inch)
Min. Thickness
T
M
1.07" (1-1/8")
1.26" (1-1/4")
11.63" (11-5/8")
11.63" (11-5/8")
29.07" (29-1/8")
25.58" (25-5/8")
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.
17
12" Min.
C
B
D
C
A
Figure 48
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 = 2.33 x 1” = 2.33.”
“R” = r
L
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
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 2.33. 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 (
7 1/2"
Max. Thickness Of Hearth Extension When
Non-Circulating Models Are On The Floor
Figure 49
FIGURE 49
WARNING: WHEN INSTALLING THE
HEARTH EXTENSION BE CAREFUL NOT
TO BLOCK THE HEAT-CIRCULATING AIR
INLET GRILL ON CIRCULATING MODELS.
WARNING: WHEN INSTALLING HEARTH
EXTENSION IN FRONT OF A CIRCULATING FIREPLACE MODEL, THE FIREPLACE
MUST BE RAISED IF HEIGHT OF HEARTH
EXTENSION EXCEEDS 2" ABOVE BOTTOM
OF FIREPLACE (
FIGURE 50
).
5 1/2"
2"
Max. Thickness Of Hearth Extension When
Circulating Models Are On The Floor
Figure 50
Secure the hearth extension to the floor to
prevent possible shifting.
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 51
Combustible
Materials
Allowed In
Shaded Area
“Safe Zone”
Figure 51
12"
.
45°
12"
Min. Distance To
Unprotected Side Wall
Fireplace
1"
18
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
INSTALLATION COMPONENTS
The following items are available for use in the
installation of this appliance.
Firestop Spacer (30°) 63L32 F8FS30-2
Offset/ Return
Package (30°) 63L22 FTF8-ES30
Chimney Section 63L10 FTF8-12
63L13 FTF8-18
63L14 FTF8-36
63L15 FTF8-48
Canadian 62L92 FTF8-18C
Chimney Section 62L93 FTF8-36C
Outside Combustion Air Kits
(with duct) 81L87 FOAK
(without duct) 81L88 FOAK-LD
(FBK-200 Models Only)
Forced Air Blower Kits
-Single Speed 80L84 FBK-100
-Variable Speed 80L85 FBK-200
63L38 F8F6
Flashing 63L39 F8F12
Stabilizer 63L25 FTF8-S4
Firestop Spacer (Flat) 63L31 F8FS-2
Storm Collar 63L59 FSC
Shipping Weight 188 lbs.
Chase Termination 96L20 FTF8-CTT
Combination
Offset/Return Elbow 63L28 FTF8-OR15
Chase Termination 96L22 FTF8-ATT
Round Termination 63L42 FTF8-CTD
Locking Band 63L60 FLB
Chase Termination
(Square) 63L48 FTF8-CT1
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
19
INSTALLATION COMPONENTS
Cold Climate Kits 63L61 FTF8-CCK1-LD
Chase Termination
(Square) 63L51 FTF8-CT2
Chase Termination
(Round) 63L45 FTF8-CTDT
Attic Shield Assembly 63L67 FTF8-FSAS
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 850,047M REV. N/C 01/2007
20
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
1110 West Taft Avenue
Orange, CA 92865
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