Lennox MP-42OD User manual

42" Indoor / Outdoor Wood Burning Fireplaces
P/N 850,031M REV. B 04/2006
MP-42OD
MODEL
MERIT® PLUS SERIES
This installation manual will enable you to obtain a safe, efficient and de-
pendableinstallationofyourfireplace system. Please read and understand
these instructions before beginning your installation.
Do not alter or modify the fireplace or its components under any circum-
stances. Any modification or alteration of the fireplace system, including
but not limited to the fireplace, chimney components and accessories,
may void the warranty, listings and approvals of this system and could
result in an unsafe and potentially dangerous installation.
IMPORTANT! TO ASSURE PROPER ALIGNMENT OF GLASS
DOORS: INSTALL THIS FIREPLACE IN A SQUARE AND PLUMB
CONDITION, USING SHIMS AS NECESSARY AT SIDES AND/OR
BOTTOM.
NOTE: This fireplace has been listed and approved for use outdoors or
indoors.
CAUTION! THIS FIREPLACE IS EQUIPPED TO BE READILY IN-
STALLED OUTDOORS. IF INSTALLED INDOORS, YOU MUST
INSTALL THE COMBUSTION AIR COVER PROVIDED WITH THE
INSTALLATION KIT OR PURCHASE THE OPTIONAL OUTSIDE AIR
KIT GATE OAKG-OD. SEE INSTRUCTIONS INSIDE THIS MANUAL
FOR FURTHER DETAILS.
IMPORTANT! POUR ASSURER L’ALIGNEMENT APPROPRIÉ DES
PORTES DE VERRE : INSTALLEZ CE FOYER SUR UNE SURFACE
PLANE ET METTRE À NIVEAU EN UTILISANT DES CALES AU
BESOIN SUR LES CÔTÉS OU EN DESSOUS.
ATTENTION! CETTE CHEMINÉE A ÉTÉ ÉNUMÉRÉE ET APPROU-
VÉE POUR ÊTRE AISÉMENT INSTALLÉE À L’INTÉRIEUR OU
DEHORS.S’INSTALLÉÀL’INTÉRIEUR,VOUSDEVEZINSTALLER
LA COUVERTURE D’AIR DE COMBUSTION ÉQUIPÉE DE KIT
D’INSTALLATION OU ACHETER LA PORTE EXTÉRIEURE FAC-
ULTATIVE OAKG-OD DE KIT D’AIR. VOIR LES INSTRUCTIONS À
L’INTÉRIEUR DE CE MANUEL POUR D’AUTRES DÉTAILS.
INSTALLATION
INSTRUCTIONS
OTL Report No.
116-F-37-2
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
VEUILLEZ GARDER CE MANUEL
POUR RÉFÉRENCE FUTURE.
A French manual is available upon request. Order P/N 850,031CF
Ce manuel d’installation est disponible en francais, simplement en
faire la demande. Numéro de la pièce 850,031CF.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
2
TABLE OF CONTENTS
Safety Rules......................................Page 2
Tools and Building Supplies..............Page 2
Precautions.......................................Page 2
Introduction ......................................Page 3
Clearances/Height Requirements ......Page 4
Chimney System...............................Page 4
Assembly Outline ..............................Page 4
Location of Fireplace.........................Page 5
Clearances ........................................Page 5
Assembly Steps ................................Page 6
Preinstallation Notes.........................Page 6
Waterproofing Fireplace....................Page 6
Outside Air Kit .................................Page 6
Fireplace & Framing Specifications...Page 9
Installing the Fireplace ......................Page 10
Installing the Chimney System..........Page 12
30° Offset through Floor/Ceiling .......Page 13
Ten Foot Rule Summary....................Page 15
Multiple Terminations .......................Page 15
Chimney Component Calculations ....Page 15
Special Offset Instructions................Page 15
Offset Calculations............................Page 16
Vertical Elevation Charts ..................Page 15
Installing Offsets...............................Page 16
Offset Elevation Chart........................Page 18
Gas Line Connection .........................Page 18
Vent Free Appliances.........................Page 19
Glass Doors ......................................Page 19
Cold Climate Insulation .....................Page 20
Fireplace Finishes - Mantels and Trim..Page 20
Hearth Extensions/Wall Shields ........Page 20
Finish Requirements .........................Page 22
Installation Components ...................Page 23
PLEASE READ AND
UNDERSTAND THESE
IMPORTANT SAFETY RULES.
• The manufacturer is notresponsible 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.
• An Outside Air Cover (provided) or an Out-
side Air Kit Gate, model OAKG-OD (optional)
must be installed to prevent significant cold
air infiltration.
13.Always ensure thattheair inlet tothefireplace
is free fromdebris and any otherobstructions
that can block the entrance of air.
14.DO NOT use a fireplace insert or any other
product not specified by Lennox for use
with this fireplace. All gas log sets must
be operated with the damper clamped open,
includingunlisted“ventfree”logsets.Listed
“vent-free” log sets may be operated with
the damper closed.
15."Smoke free” operation is not warranteed
nor are we responsible for inadequate sys-
tem draft, general construction conditions,
inadequate chimney heights, adverse wind
conditions and/or unusual environmental
factors or conditions beyond our control.
16.Never, under any circumstances, install a
fireplace, chimney component or any acces-
sories, that has visible or suspected physical
damageasaresultofhandlingortransporta-
tion. These itemsshould be inspected byyour
distributororqualified factory representative
to ensure safe condition. When in doubt,
consult your distributor.
17.For additional safety considerations and
complete operating instructions, refer to
the Care and Operation Manual provided
with the fireplace.
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 lo-
cal, regional, state and national codes and
regulations.
3. ThisfireplacemustbeinstalledwithSecurity
Chimneys FTF8 [8" (203mm) inside diam-
eter] Chimney System only. This fireplace is
intended for indoor or outdoor installations.
The chimney system must always vent to
the outside of the building or structure.
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 heat-
ing season.
5. Burn approved fuels only as defined in the
Homeowner's Care and Operation Manual.
6. 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
at safe distance from the fireplace.
7.NEVERleavechildrenunattendedwhen there
is a fire burning in the fireplace.
8. Always keep flue damper open when heat is
present in the fireplace.
9. Before servicing, allow the fireplace to cool.
Always shut off any gas to the fireplace
while working on it. This will prevent the
possibility of burns.
10.This fireplace is not a heater. It is designed
to ensure homeowner comfort by providing
supplemental heat to its immediate area.
11.Keep screens closed after feeding fire to
keep embers from flying out ot fireplace.
12.INDOOR INSTALLATIONS:
• Always ensure that an 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 outside air kit may not provide all
the air required to support combustion.
PACKAGING
The assembled indoor/outdoor fireplace is
packaged with:
1 - One envelope containing the literature pack-
age which consists of the homeowner's
manual, installation instructions, warranty
and combustion air cover (located in the
firebox).
2 - One Outside Air Kit.
3 - Hearth Extension Strips.
WARNING
To avoid the risk of damaging
fireplace materials and increas-
ing the risk of fire, do not use the
fireplace to cook or warm food.
AVERTISSEMENT
Pour éviter le risque
d’endommager les matériaux
du foyer et d’augmenter le
risque d’incendie, n’employez
pas le foyer pour faire cuire ou
réchauffer de la nourriture.
TOOLS AND BUILDING SUPPLIES
NORMALLY REQUIRED
Tools Supplies
Phillips screwdriver
Hammer
Saw and/or sabersaw
Level
Measuring tape
Plumb line
Electric drill and bits
Pliers
Square
Framing materials
Wall finishing materials
Caulking materials
(noncombustible)
Fireplace surround and
hearth extension
materials
(noncombustible)
PRECAUTIONS
The most important areas of concern dealing
with the installation of factory-built fireplaces
areclearancestocombustiblematerials,proper
assembly of component parts, height of the
chimney system, the proper use of accessories
supplied by themanufacturer and thetechniques
employedinusingfinishingmaterialsappliedto
thewallsurroundingthefireplace,hearthexten-
sions and wall shields. Each of these topics will
be covered in thorough detail throughout this
manual. Please give each your special attention
as you progress with your installation.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 3
These fireplace systems are designed for installa-
tion in accordance with the National Fire Protec-
tion Standard for chimneys, fireplaces and solid
fuel burning appliances; NFPA 211-latest edition
and in accordance with codes such as the BOCA
Basic/National Codes, the Standard Mechanical
Code and the Uniform Building Codes.
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 tech-
niques as well as prevailing local codes.
INTRODUCTION
General Information
These fireplaces are traditional radiant heat
fireplaces with standard bar grates, optional
Outside Air Kits (required for outdoor installa-
tions) and optional Operable Bi-Fold Stainless
Outdoor Glass Doors and Weather Cover.
These appliances are approved for installation
indoors or outdoors.
Indoors: These appliances are approved
for installation in residential homes and
other buildings of conventional construction
including commercial, not in manufactured
homes(see Figure 5).
Outdoors: These appliances are approved for
installion against an outside wall of a house, or
asafreestandingfireplaceontheporch,patio,or
located in the yard (see Figure 6). The Outdoor
Fireplace must be enclosed to prevent impact
damage to the outside of the fireplace. Build
an outside enclosure out of standard building
materials,beingcarefultomaintaintheminimum
air clearances specified in these Installation
Instructions. When installing the fireplace as
a freestanding unit on your porch, patio or
backyard, it must also be enclosed to prevent
impact damage to the fireplace. However, the
enclosure must now be finished on all four (4)
sides. The exterior of the enclosure may be
finishedinatexturedplywood,awoodclapboard
siding, brick, or a cultured stone. TYPICAL INSTALLATION - INDOORS
Outside
Combustion
Air Kit
(Optional)
Chimney and
Termination
Figure 2
Vinyl siding is not recommended for use
on the front of the fireplace due to the heat
the unit produces. This can cause the vinyl
siding to deteriorate.
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 fireplaces have been tested and listed
by OMNI-Test Laboratories, Inc. (Report No.
116-F-37-2) to U.L. 127 (USA) and U.L.C.
S610 (Canada). These units are intended for
indoor and outdoor installations as specified
in this manual.
ForinstallationsinCanada,thechimneyclear-
ance to combustibles must be 2 inches and
the Cold Climate Kit must be installed.
Outside Air Kit installa-
tion is optional unless
mandated by local build-
ing codes.
Note: Framing and fireplace shown as reference
only. It can differ according to design and local
building codes.
Chimney Section
(FTF8-48)
*Air Inlet
(Provided)
Flashing
(Locally
Fabricated)
Storm Collar
(FSC)
* Outside Air Kit (provided)
must be installed in
outdoor installation.
Note: Framing is shown as reference only. It can
differ according to design and local building codes.
7' 9" Min. (using one 4' section)
Termination (FTF8-CTDTM)
WARNING
Do not pack or fill required air
spaces with insulation or other
material.Nomaterialisallowed
in these areas.
AVERTISSEMENT
Ne remplissez pas les espaces
libres d’une matière isolante ou
de tout autre type de matériel.
Aucun matériel n’est permis
dans ces espaces vides.
WARNING
If insulation is used, the fireplace
mustnotbeplaceddirectlyagainst
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.
AVERTISSEMENT
Si un isolant est utilisé, il ne doit
pasvenir encontactaveclefoyer.
L’isolant ou le coupe vapeurs, si
utilisée, doit d’abord être couvert
d’un panneau de gypse, contre-
plaqué,panneau departicules ou
d’unautrematérielpours’assurer
que l’isolant et le coupe vapeurs
demeurent en place.
TYPICAL INSTALLATION - OUTDOORS
Figure 1
Notes:
• Framing is shown as
reference only. It can differ
according to design and
local building codes.
• Fireplace is shown for
illustration purposes only.
It may differ from actual
model.
Use Only Non-Combus-
tible Materials From Top
Of Spacers Down (5"
Min.) And Within 1/2"
Min. To Side Frame.
Outdoor fireplace system
less than 15 feet height
must have a chimney
clearance of 2” air
space to insulation and
construction materials
and be a minimum of 10
feet away from a building
or combustible structure.
If installed closer than
10 feet, the 10 foot rule
applies (see ten foot rule
summary on Page 15).
Metal Safety Strips
And Hearth Extension
Required When Installed
On Combustible Floor Or
In Proximity To Combus-
tible Floor/Covering.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
4
INDOOR INSTALLATIONS - The minimum
installed height of the completed fireplace
system for is 15' 0." The maximum height is
60' 0" (see Table 1).
OUTDOOR INSTALLATIONS - The minimum
installed height of the completed fireplace
system is 7' 9." The maximum height is 60"
(see Table 2).
Outdoor installations lessthan 15’ height require
chimney clearance of 2” air space to insulation
and construction materials.
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 pre-
vent 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 20, 21 & 22).
CHIMNEY SYSTEM
Thesefireplaces are designedand code listed for
use with Security Chimneys FTF8 chimney Sys-
tem 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.
Chimney Height - Indoor Installations
The total height of your completed fireplace sys-
tem 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 (see Table 1).
Chimney Height - Outdoor Installations
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 (see
Table 2).
INDOOR INSTALLATIONS
Minimum System Height
Security's FTF8 Pipe
Vertical Installation 15' 0"
One Offsets 15' 0"
Two Offsets 25' 0"
Table 1
OUTDOOR INSTALLATIONS
Minimum System Height
Security's FTF8 Pipe
Vertical Installation 7' 9" 
One Offsets 15' 0"
Two Offsets 25' 0"
Table 2 - See following Notes
When complete thesefireplace systems consists
of five basic “sub-systems”:
1. The Fireplace
2. The Chimney and Termination
3. The Optional Glass Doors
4. The Optional Outside Air Kits
5. The Optional Weather Cover (for outdoor
installations)
CLEARANCES AND HEIGHT
REQUIREMENTS
The fireplace may be placed on or near normal
construction materials*. The outside air kit,
firestop spacer and roof flashing (not chase
flashings) may be placed directly on or against
normal construction materials. **
A combustible mantel may be installed 12"
above the opening of the fireplace as per NFPA
211-latest edition. In Canada, the minimum is
18" above the fireplace opening.
* In the USA, the chimney and fireplace outer
wrapper require a minimum 1" air space to
insulation and construction materials.
* Outdoor installations less than 15’ height
require chimney clearance of 2” air space to
insulation and construction materials.
* In Canada, the chimney and fireplace outer
wrapper require a minimum 2" air space to
insulation and construction materials.
** Construction Materials:
• Framing Materials • Paneling
• Particle Board • Flooring
• Dry Wall • Plywood
• Noncombustible Insulating Materials
• Etc.
Notes (Table 2)
• Outdoor fireplace system less than 15 feet
height must have a chimney clearance of
2” air space to insulation and construction
materials and be a minimum of 10 feet away
from a building or combustible structure.
The 10 foot rule applies on all cases (see
ten foot rule summary on Page 15).
• Thesystem height may be reducedtoasingle
length of FTF8-48 pipe and termination with
the FTF8-CTDTM for a minimum height on
a complete system of 7' 9." The fireplace
must be installed as a Freestanding system
and located a minimum of 10' away from any
building or structure (refer to Figure 1).
• The minimum height will vary when using
other Firecraft or Lennox Terminations.
Chase Enclosure
A chase is a vertical box-like structure con-
structed to surround the fireplace and chimney.
Refer to Figure 4 for a typical chase configura-
tion. As with all chimney installations, avoid
overhead obstructions such as trees, power
lines, etc. A chase should be constructed and
insulated just like any outside wall. In a cold
climate, we recommend the base of the chase
should also be insulated between the solid
continuous floor beneath the fireplace and the
chasebottom.Chaseinsulationinacoldclimate
installation is not required for safety.
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 installa-
tions. However, it is recommended for safety
and the reduction of heat loss.
ASSEMBLY OUTLINE
Before You Start
Check your inventory list to be sure you have
all the necessary parts supplied in good us-
able 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 in front of the firebox lintel (Figure 3).
The control lever snaps into place at either
extreme of its range of motion. When locked
in position all the way to the right, the damper
is open. When locked in position all the way to
the left, the damper is closed.
WARNING
Failure to use manufacture
provided parts, variations in
techniques and construction
materialsorpracticesotherthan
those described in this manual
maycreateafirehazardandvoid
the limited warranty.
AVERTISSEMENT
L’échec d’utiliser la fabrication
les parties fournies, les varia-
tions dans les techniques et le
matériel de construction ou les
pratiques autre que ceux-là ont
décritdanscemanuelpeutcréer
un risque d’incendie et un vide
la garantie limitée.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 5
Figure 4
Insulate Joists
Same As Ceiling
Draft Stops
Firestop
CTDT
Termination
Note: Non-
Combustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
Insulation
(Thermal Barrier)
8'
Level
Chase Enclosure - Indoor Installation
Figure 3
Damper
Closed Damper
Open
Lintel
Combustion Air Actuator
(when installed)
Hearth
Hearth
Optional
Outside Chase
LIVING SPACE
PATIO
Indoor Locations - Top View
Indoor Locations - Carefully consider the
position of the fireplace opening with re-
spect 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.
Figure 5
Outdoor Locations - Top View
Figure 6
When choosing alocation, care must betaken
to avoid places where flooding or running
water may be a problem.
DO NOT place furniture or other items such
as plants or decorative objects within 60” of
the fireplace front face.
Figure 7 Clearances
Frame Surface Not to Be Covered
With Combustible Materials
12" Wall
Covering
45°
12"
1"
Door
Opening
Safe
Zone
Restrictions for Outdoor installations:
• Outside Air Kit must be installed and
fully open on the outdoor installation. On
the indoor installation is optional unless
mandated by local building codes.
• Minimum chimney height for the outdoor in-
stallation is 7' 9" (one 4 foot pipe section).
• Minimum2"chimneyclearanceisrequired
when system height is less than 15'.
• Onlynon-combustiblematerialsareallowed
onthefrontface(FrontFireplaceFrame)and
aroundtheperimeterwithin5”(fulllengthof
top spacers) on the top and 1/2" on the sides
(see Figures 1, 51 & 52).
Combustible materials may project beyond the
sides of the fireplace opening as long as they
are kept within the shaded areas illustrated in
Figure 7.
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).
Note: Clearance at the nailing tab is 0" (0mm)
(see Figure 25).
Note: Adjacent wall considerations are for
an adjacent wall on only a single side. Walls
should not be placed at minimum distance at
both sides of the fireplace.
CAUTION
To ensure that the outside air
kit remains open for an outdoor
installation,thisfireplaceshould
not have a combustion air gate
control installed (OAKG-OD). If
this unit is installed indoors,
you must install the outside
combustionaircoverprovidedor
an optional outside air kit gate
(OAKG-OD) before the fireplace
is framed in place.
ATTENTION
Assurer que les restes extérieurs
dekitd’airouvertspouruneinstal-
lationextérieure,cettecheminée
n’ontpasunecommandedeporte
d’air de combustion a installé
(OAKG-OD). Si cette unité est
installée à l’intérieur, vous devez
installer la couverture extérieure
d’air de combustion fournie ou
une porte extérieure facultative
de kit d’air (OAKG-OD) avant
que la cheminée soit encadrée
en place.
LOCATION OF FIREPLACE
Carefully select the proper location for heat
circulation, aesthetics, chimney obstructions,
air inlet location and clearance to side wall(s).
With proper pre-planning, a slight adjustment
of a few inches can save considerable time and
expenselaterduring construction andassembly.
See Figures 5 & 6 for examples.
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.
Outdoor Locations - Carefully consider the
position of the fireplace opening with respect
to the location of adjacent or nearby stair-
wells, doors, windows, walk ways and over
hanging trees, patios and wires.
Optional
Hearth
Extension
Air Inlet (inlet
must be free of
any obstructions)

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
6
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. (Outdoor Installations) Waterproof the
fireplace. See Waterproofing The Fireplace
on Page 6.
3. Install the chimney system.
4. Install an outside air cover or an airgate kit, if
fireplace is being installed indoors (optional
accessory, see Page 23 for ordering infor-
mation). The Airgate kit is required on all
INDOOR installations when an outside air
kit is installed. The Airgate Kit is NOT ap-
proved for use on outdoor installations.
5. Install outside air kit (provided). This kit
is required on ALL outdoor installations
(optional for indoor installations).
6. Plumb gas line if a decorative gas appliance
will be used. (Gas connections should only
be performed by an experienced, licensed/
certified tradesman).
7. Complete the installation, finish wall mate-
rial, surround and hearth extension to your
individual taste.
8. Assemble and attach optional glass door
assembly.
Study the illustration of the installation, Figures
1 & 2, to get a general idea of each element of
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 car-
peting, vinyl or other soft floor coverings. It may,
however,beplaced onflatwood,plywood,particle
board or other hard surfaces. Be sure fireplace
rests on a solid continuous floor or platform with
appropriate framing for support (and for indoor
installation ensure 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 weight for the fireplace
may be found on Page 9 (see Product
Reference Information).
2. Measure thesquarefootage of the floorspace
tobeoccupiedbythesystem,surroundsand
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 ad-
ditional support.
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.
WATERPROOFING THE FIREPLACE
Outdoor Installations
Although the fireplace is designed to drain to
the front most of the water from rain and other
sources that may enter the hearth area, conden-
sation and unusual conditions may cause water
to collect inside the fireplace bottom.
To prevent water collection, the builder must
provide a means to drain water from under
the fireplace by building or installing a water
collector of the builder's choice before posi-
tioning the fireplace on its location.
INDOOR INSTALLATIONS ONLY
Outside Air Cover
If the optional outside air kit is not required
in an indoor installlation, you must install the
outside air cover to close the opening for the
WARNING
IndoorInstallations-Iftheoptional
outside air kit is not required, the
outsideaircovermustbeinstalled
for safe fireplace operation.
AVERTISSEMENT
Installations d’intérieur - si le kit
extérieur facultatif d’air n’est pas
exigé, la couverture extérieure
d’air est exigent pour l’opération
sûre de cheminée.
The Outside Air Cover is included in the Instal-
lation Instrctuions package provided with this
fireplace. Follow the steps below:
a. Remove the Outside air collar located on
the side of the fireplace. Do not discrd the
screws (see Figure 8, Photos A & B).
b. With the screws previously removed, install
the cover provided with the installation
instructions kit (see Figure 8, Photo C).
Figure 8
Four (4) Screws
Outside Air Collar
Viewed from right side of fireplace
Outside air collar Removed
Outside Air Cover Installed
Required on indoor installations if
an outside air kit is NOT installed.
A
B
C
Outside Air Kit Gate Installation
(optional kit) Indoor Installations Only
Theinstallation ofthe AirGate (shutter)isrequired
on all indoor installations to prevent cold air
infiltration when an outside air kit, OAK-OD (duct
& hood), is installed. The Outside Air Kit Gate,
OAKG-OD (air gate & arm), must be purchased
and installed before the fireplace is installed.
1. Remove the Outside Air Collar located on
the right hand side of the fireplace (retain
the screws). See Figure 8, Photos A & B.
2. Install the Outside Air Kit Gate (OAKG-
OD) per the instructions in the kit and the
following instructions using the screws
provided.
a. Assemble the Air Gate Arm to the Air
Gate as shown in Figure 9.
b. Take the Air Gate Assembly and feed the
arm through the round opening (see Figure
10)andthenthroughthesideframeopening
in the front as shown in Figure 11.
Right Side
Outside Panel
on Fireplace
Right Outside
Panel on
Fireplace
Right Side
Outside Panel
on Fireplace

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 7
IMPORTANT! IF THE AIR GATE IS INSTALLED
UPSIDE DOWN (WITH THE NOTCH POSI-
TIONED ON THE UPPER HALF) IT WILL NOT
WORK PROPERLY. REFER TO FIGURE 9.
c. Ensure the air gate arm remains attached
to the air gate, secure the Air Gate to the
fireplace, withthe screws provided, asshown
in Figures 12 & 13.
d. Verify the mechanism is working by pulling
to open and pushing to close.
3. Install the Outside Air Collar with the screws
removed earlier (see Figure 14).
Assemble the Air Gate and Arm as shown.
Air Gate Assembly
Air Gate Assembly
Air Gate Arm
Air Gate Arm
Figure 9- Outside Air Kit Gate
Right Outside Panel
on Fireplace
Firebox
Feed The Arm Through Side Frame Opening
Using a screwdriver bend this tab outward, if
necessary, for the arm to clear the opening
Align Air Gate Assembly to Opening
Secure Air Gate Assembly 4 Places
Front Face
Figure 10 - Air Gate Assembly to Fireplace
Reinstall Outside Air Collar
Figure 12 - Position Air Gate
Figure 13 - Install Screws
Figure 11 - Air Gate Arm in Front
Figure 14 - Reinstall Connector
4. Install an Outside AirKit (with duct and hood)
per the instructions provided with kit.
a. If the outside air kit is NOT installed, you
must install the Outside Air Cover provided
with the instructions kit.
b.If an outside air kit IS installed, the Outside
Air Kit Gate must be installed (see Page 23
of ordering information).
The Outside Air Kit Gates are required
on all indoor installations only. They
are not approved for use on oudoor
installations.
Air Gate Operation Instructions
Install the Air Gate Kit per the instructions
provided with kit (see Page 23 for ordering
information).
Figure 15
Combustion Air Actuator
Pull Forward to Open,
Push Back to Close
To operate, push the end of the actuator arm
to the left as shown in Figure 15, 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 actua-
tors 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.
Air Gate Kit (purchased separately)
Position the Air Gate Assembly as Shown
Arm
Side Frame
Opening
When assembled onto appliance, the
notch here must be positioned as shown

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
8
Figure 16
Air Duct
Air Inlet
Clamps
Note: Air Inlet
Must Be Free Of
Any Obstructions
Install as follows:
Connect the 4" (102 mm) Class 0 air duct
provided, to the collar on the fireplace with the
clamps provided in the kit’s hardware package
(Figure 16).
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. Check local building codes for any
restrictions. We recommend that the inlet be
at least 4 feet above grade level.
Note: Air inlet ducts must not terminate in
attic space.
Figure 17
3 Feet
Duct Hole Framing:
Cut or frame a hole through the outside of the
enclosure for the installation of the duct inlet
hood. A 5" (127 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 the 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 water-
proof silicon type caulking. If additional duct
is needed, use Class 0 metallic air duct (refer
to Figure 16).
Outside Air Kit (provided)
Required on all Outdoor installations
Optional on Indoor installations
Outside Air Kit Installation (provided)
These appliances are equipped with a com-
bustion air inlet collar so that it is possible to
duct combustion air from the outdoors to the
firebox. To accomplish an outside air hook-
up, use only the Outside Air Kit provided with
these appliances. These kits come complete
with all components necessary in completing
a combustion air vent system.
Indoor Installations - An Air Gate Kit must be
installed prior to the installation of the Outside
Air Kit (purchased separately - see Page 23 for
ordering information).
Outdoor Installations - Unitsinstalledoutdoors
are required to have the Outside Air Kit (pro-
vided) installed without the Air Gate Kit. The
optional Air Gate Kit is not approved on outdoor
installations.
Note: Secure the duct hood to a vertical post
with the inlet positioned downward. Ensure that
nothing blocks the hood opening. This duct
must never terminate higher than 3 feet below
the fireplace termination (Figure 17).
Air Inlet
(duct hood)
CAUTION
Avoid installing the air inlet
where the opening could be
blocked by snow, bushes or
other obstacles. The maximum
height for the outside air is 50
feet above the hearth, provid-
ing the air inlet is terminated a
minimum of three (3) feet below
the chimney cap level.
ATTENTION
Évitezd’installerlaprised’airou
l’ouverturepourraitetrebloquee
par la neige, les buissons ou
d’autres obstacles. La hauteur
maximum pour la prise d’air est
de50pi.Audessusdelabasedu
foyeràconditionqu’ellesesitue
à au moins 3 pi. En dessous de
la sortie de la cheminée.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 9
45"
(1143 mm)
31-9/16"
(802 mm)
21-1/4"
(540 mm)
8-3/16"
(208 mm)
Top View
Right Side
Gas Line
Access Junction
Box
Combustion
Air Inlet
9-7/8"
(251 mm)
43"
(1092 mm)
21-1/4"
(540 mm)
43"
(1092 mm)
21-1/4"
(540 mm)
Left Side
45"
(1143 mm)
Front View
43"
(1092 mm)
7-3/16"
(183 mm)
41"
(1041 mm)
2"
(51 mm)
12-1/2"
(318 mm)
22-5/16"
(566 mm)
13-7/16"
(341 mm)
8-3/8"
(213 mm)
Fireplace Top Spacer
Fireplace
Top Spacer
Gas Line
Access
19"
(483 mm)
10"
(254 mm)
12 ¹⁄₂"
(318 mm)
47"
(1194 mm)
1"
(25 mm)
38"
(965 mm)
FIREPLACE SPECIFICATIONS - MODEL MP-42OD
Figure 18
Notes
Due to Lennox' ongoing commitment to quality,
all specifications, ratings and dimensions are
subject to change without notice.
Allframingdimensionscalculatedfor1/2"drywall
at the fireplace face. If sheathing the chase or
finishing with other thickness materials, calcula-
tions will need to be made.
See Page 10 for Ceiling and Roof Framing
Dimensions
Diagrams & Illustrations Not to Scale
Fireplace Framing
Header
(See Note **
)
B
1
A
B
2
A
Outside Chase
G
C
H
I
nc
l
u
di
ng
Fi
n
i
s
i
ng
M
ater
i
a
l
s
if any
Rough
Framing Face
(Unfinished Shown)
Combustion
Air Kit - Optional
*
Framing Dimensions
A 46-1/2" 1181 mm
B143-1/2" 1105 mm
B260-1/2" 1537 mm
C 33" 828 mm
D 17-1/2" 445 mm
E 76-1/4" 1937 mm
F 38-1/8" 968 mm
G 21-5/8" 549 mm
H 20-5/8" 524 mm
J 53-7/8" 1362 mm
K 8" 203 mm
Outside Chase - Indoor Installations
Outside
Air Kit
G
A
Outside Chase
Back Wall of Chase/Enclosure
Including Finishing
Materials if any
Rough Framing Face
(Unfinished Shown)
Optional
Drainage
Line
**Note: When Framing With 6” Studs Header Must Be 17”
(432mm)Higher. Use SecurityChimney’s OR15 Offset/Re-
turn Elbow To Recess The Chimney Back 2 1/2” (64mm).
Flat Frame Down To A False Header At (B1). Maintain
Required Clearance To Chimney At All Times.
* 1" Air Space to insulation and construction materials on the
back and sides.
OTL Report No. 116-F-37-2
Corner Installation
J
D
A
E
F
Back Wall of
Chase/Enclosure
Including Finising
Materials
if any
Rough
Framing Face
(Unfinished Shown)
OAK-OD Combustion
Air Kit
AK
G
Inside Chase
Back Wall of Chase/Enclosure
Including Finishing Materials, if any.
Rough
Framing Face
(Unfinished Shown)
OAK-OD Combustion
Air Kit
Product Reference Information
Cat.
No.
Model Ship.
Weight
Ship.
Volume
H1934 MP-42OD 188 lb. 24 cu. ft.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
10
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 (Figures 21,
22 & 23). The safety strips should overlap 1/2
min. for continual coverage of the floor.
Note: Safety strips are not required when fire-
place rests on a noncombustible surface.
Figure 22
Figure 21
1" (25 mm) Space
Metal Safety Strip Floor
Hearth
Extension
Maintain
1" (25 mm)
Air Space
At Back
And Sides
Top Spacer
Note: Hearth extensions must not interfere with
circulating grillwork
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
Figure 19
Figure 20
A
B
Ceiling Framing
C
D
Roof Framing
Framing Dimensions for Ceiling
Inches (millimeters)
Flue Type A B
FTF8 Vertical
(USA)
14 1/2"
(368 mm)
14 1/2"
(368 mm)
FTF8 Vertical at 2"
(Canada)
16 1/2"
(419 mm)
16 1/2"
(419 mm)
FTF8 Offset 30°
(USA)
14 1/2"
(368 mm)
25"
(635 mm)
FTF8 Offset 30° at 2"
(Canada)
16 1/2"
(419 mm)
27"
(686 mm)
Framing Dimensions for Roof
Inches (millimeters)
Pitch
FTF8 at 1" (USA) FTF8 at 2" (Canada)
CD*CD*
0/12 14 1/2"
(368 mm)
14 1/2"
(368 mm)
16 1/2"
(419 mm)
16 1/2"
(419 mm)
6/12 14 1/2"
(368 mm)
17"
(442 mm)
16 1/2"
(419 mm)
19"
(483 mm)
12/12 14 1/2"
(368 mm)
21 1/2"
(546 mm)
16 1/2"
(419 mm)
23 1/2"
(579 mm)
* Perpendicular to roof ridge
Framing Ceiling
Frame the opening for the ceiling as speci-
ficed here.
Framing Roof
Frame the opening for the roof as
specificed here.
Note: Faming Dimensions in Canada & USA are different
because installations in USA require 1" Clearance to pipe.
Installations in Canada require 2" Clearance to pipe.
Note: Faming Dimensions in Canada & USA are different
because installations in USA require 1" Clearance to pipe.
Installations in Canada require 2" Clearance to pipe.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 11
Note: Install the hearth extension only as il-
lustrated (see Figures 21 & 22).
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 23 & 24). The
safety strips should be tacked down to prevent
possible movement.
Note: The “Z” type safety strip is not sup-
plied.
Note: Safety strips are not required when fire-
place rests on a noncombustible surface.
Step 3. Refer to fireplace drawings and speci-
fications (see Figures 18, 19 & 20)for fram-
ing dimensions and details. Frame appliance
enclosure as illustrated in Figure 18.
Note: The framed depth, 21 5/8" (549 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 21 5/8" (549 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.
Metal Safety Strips
1¹⁄₂"
Blocking
Metal Safety Strips
Figure 23
Figure 24
WARNING
Under no circumstances can the
fireplacetopspacers(see Figure
18) be removed or modified, nor
may 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.
AVERTISSEMENT
Sous aucune circonstance les
espaceurs du dessus du foyer
(voir le schéma 13) ne peuvent
être retirées ou modifiées,
vous ne pouvez pas entaillez le
colombage pour ajuster autour
ou être installé plus bas que les
espaceurs. Le colombage peut
être en contact direct avec les
espaceurs du dessus mais ne
peut être soutenu par eux.
Step 4. The fireplace should be secured to the
sideframingmembersthroughthenailingtabat
the top and bottom on each side of the fireplace
front face. Use 8d nails(Figure 25).
Figure 25
For Canadian Installations - A Cold
Climate Kit, FTF8-CCK3-LD, must be
installed in all indoor installations.
Installermustsupplysuitablelengthof6"
Diameter, class "0" metallic air duct.
Step 5. Attach the cold climate kit, around the
chimney collar with the screws provided (see
Figure 26).
8d Nail
Nailing Tab
1/2”
Min.
Figure 26
Note: The nailing tab and the area directly
behind the nailing tab is exempt from the
clearancesdescribedon Page 5. Maintain at
least 1/2” clearance from the firebox wrap-
per to the framing at the closest point of
contact, directly adjacent to the flange.
Cold Climate Kit Installation Instructions:
1. Connect the 6" (102 mm) Class 0 air duct
provided by installer, to the duct collar on
the fireplace and secure with two (2) screws
from the kit’s hardware package.
2. Route the Class 0 air duct out the back or
side wall, up through the ceiling or floor
joists to an outside wall. The air inlet hood
should be located above snow level or above
any anticipated snow level, (Figure 19).
Install As Shown With
Opening In Downward
Position Do Not Block
Entrance
5 Foot Min. Height
From Outside
Ground Level
Note: If the fireplaceis installed against an inside
wall, the class 0 air duct may be extended into a
ventilated attic spaceat least 18"(475mm) above
the attic floor. Secure the air inlet hood to a
vertical post withthe inlet positioned downward.
Ensure that nothing blocks the hood opening.
This hood must never terminate higher than
three (3) feet below the termination.
Figure 27

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
12
3. Cut or frame a hole through the outside wall
for the installation of the air inlet hood. A
6-1/2" diameter hole is required. Feed the
loose end of the flexible duct through the
hole and attach to the collar on the air inlet
hood using two (2) screws from the kit's
hardware package. Insert the hood into the
opening. Secure the inlet hood in place with
nails driven through the holes in the flange.
Seal with noncombustible waterproof silicon
type caulking.
Steps 6 - Install Air Gate Kit
(Required on All Indoor Instlaltions. When
an Outside Air Kit is installed, see assembly
steps on Page 6).
Install the Air Gate Kit per the instructions
provided with kit and on Page 6 (see Page 23
for ordering information).
Step 7. Outside Air Kit (provided)
(Required on All Outdoor Instlaltions)
Install the Outside Air Kit per the instructions
provided with kit and on Page 7.
Step 8. Route the Class 0 metallic air duct per
the instructions on Page 8.
Step 9. Cut or frame a hole through the outside
of the enclosure for the installation of the duct
inlet hood per the instructions on Page 8.
INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
of the damper, as described on Page 5, (refer
to Figure 3).
Step 2. Using standard construction framing
techniques, construct openingfor 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.
Figure 28
A minimum 1"* air space must be reserved
for clearance to insulation and construction
materialsextendingforanycontinuouslength
surrounding the chimney.
*Note: 2"airspacetoinsulationandconstruc-
tion materials required in Outdoor Installa-
tions when system height is less than 15 feet
(see Table 2, Page 4).
In Canada, the chimney and outer wrapper
require a minimum 2" air space to insulation
and construction materials.
Reference Figures 19 & 20 and charts Framing
Dimensions for Ceiling and Roof, which specify
minimum ceiling and roof dimensions.
Innew construction,todeterminechimneycenter
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 28). Then plumb from ceiling
or roof level directly above hole which has just
been completed.
Firestop Spacer
Room Above
Firestop Spacer
Attic Above
Figure 29
Figure 30
Step 3. Position appropriate firestop spacer
at ceiling and nail temporarily with two (2) 8d
nails. Use flat firestop spacer, Model F8FS, if
chimneypenetratesceilingvertically.Ifchimney
penetratesceilingat30°angle(offsetchimney),
use 30° firestop spacer, Model F8FS30. Use one
nail on opposite sides to hold firestop spacer in
position.Nailpermanently,usingatleast two (2)
more8dnails,afterchimneysectionshavebeen
assembledthroughthefirestopspacerandafter
any necessary adjustments have been made.
Firestop spacer must be secured by at least four
(4) 8d nails when completely installed.
Notes:
Indoor Installations: 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
29 & 30).
Outdoor Installations: If patio installation
requires that a chimney passes through a roof
or room above, be sure to comply with all local
building codes.
CAUTION
Allow minimum 1"* chimney air
space to insulation and building
materials throughout vertical or
offset chimney installation.
ATTENTION
Permettez à minimum 1 pouce*
espace aérien de cheminée à
l’isolation, aux matériaux de
construction et aux membres
encadrants dans toute la verti-
cale ou excentrez l’installation
de cheminée.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 13
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 firestop spacer as shown
inFigures 31 & 32.Supportthechimneyatfloor
or ceiling penetration with a FTF8 stabilizer if
distance of chimney belowceiling is 10' or more.
Maintain 1"* minimumair space tocombustibles
from chimney sections.
Figure 31
Step4.Note:Chimney sections are constructed
with a unique locking tab design, which ensures
an immediate, tight assembly betweensections.
Plan your chimneyrequirements 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 Chimney's 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 34).
Theouterchimneysectioninstallstheopposite-
way; the lanced end goes down and each new
section goes OVER the outside of the previous
section installed (Figure 35).
For Canada Only
When installing the chimney system through
an open attic space, the attic shield assembly-
firestop spacer must be used (Figure 33). This
installation is required only for use in Canada.
Note: For Canadian installations, all chimney
installed outside the building must be con-
structed with galvalume (outer sections only).
Theappropriate model designations are located
in the back of this manual.
F8FS30
Firestop Spacer
FTF8-S4 Stabilizer
1"*Min.
Air Space
30 Firestop
And Attic Above
10'
Max.
Attic Space
1"*Min.
Air Space
F8FS30
Firestop Spacer
FTF8-S4 Stabilizer
30 Firestop
And Room Above
10'
Max.
Room Above
1"
*
Min.
Air Space
1"
*
Min.
Air Space
Open Attic Space
Locking
Tabs
(Lances)
Figure 32
Figure 34
Figure 35
Figure 33
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
36). Always maintain 1"* minimum air space to
insulation and construction materials. 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.
1"
*
Min. Air Space
To Combustibles
Figure 36
Security's chimney sections do not need to be
screwed together. Additional reinforcement is
not necessary except in certain offset conditions
(refer to Page 16, Figure 47).
Step 5. The height of vertical chimney pipe
supported only by the fireplace must not exceed
30'. Chimney heights above 30' must be sup-
ported 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
proceedingfluepipeandlockingouterstabilizer
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 (see Figure 37).
*Notes:
• 2" clearance to combustibles required in
Canada.
• Outdoor installations less than 15’ height
require chimney clearance of 2” air space to
insulation and construction materials.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
14
Next, slide roof flashing over extended chimney
section that previously has been installed above
theroofopening in Step4.FTF8 flashings require
flashingspacers.Slideflashing all the way down
until the flashing base rests flat on the roof
(Figure 38). Again, check the vertical position
of the chimney and the 1"* minimum air space
to insulation and construction materials.
Step9.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 40).
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 (see Figure 41). Guy wires
are not supplied by the manufacturer.
Step 8. The standard Security FTF8 roof flash-
ing 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
entirecircumferenceof pipe. Also add extra roof
caulking to the tab/slot area to seal completely
against water penetration (Figure 40). Check all
jointsvery carefully to ensure no water intrusion
can take place.
Note: Do not apply excessive pressure to any
subsequent chimney sections following the
stabilizer when installing. Ensure each subse-
quent chimney section is securely attached by
testing as noted in Step 4.
Step 6. Select the proper Security Chimneys
roof flashing based on pitch of roof. Use chart
below for selection:
Figure 37
Note: Do not caulk or seal the ventilating open-
ings or seal the flashing at the chimney.
Step 7. Secure flashing by nailing along the
perimeter into roof using 8d nails. If shingled
roof, slide upper end and sides of roof flash-
ing 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 39).
* Notes
• 2" clearance to insulation and construction
materials required in Canada.
• Outdoor installations less than 15’ height
require chimney clearance of 2” air space to
insulation and construction materials.
FTF8-S4 Stabilizer
FTF8 Chimney
FTF8 Flashing
Flashing Spacers
Do Not Seal
Locking Band
Mastic
Figure 38
Figure 39
Figure 40
Roof Pitch Model
Flat to 6/12 F8F6
6/12 to 12/12 F8F12
Roof Ridge
120°
Figure 41
Step 10. Using a FTF8-CTD or FTF8-CTDT
Round Termination (indoor fireplace
installations only):
1. Hold the FTF8-CTD (or CTDP) over top of
last chimney section (Figure 42).
2. Center inner slip section in inner flue pipe-
slip down.
Figure 42
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.
Using a FTF8-CTDTM Chase Termination:
Refer to specific installation instructions
(750,205M) included with the FTF8-CTDTM
chase termination for clearance and installa-
tion details.
Using a FTF8-CT1 or FTF8-CT1P Chase
Termination:
Refer to specific installation instructions
(750,015M) included with FTF8-CT1 chase
terminations for clearance and installation
details.
Using a FTF8-CT2 Chase Termination:
Refer to specific installation instructions
(750,016M) included with FTF8-CT2 chase
terminations for clearance and installation
details.
Using a FTF8-CTT Chase Termination:
Refer to specific installation instructions
(750,077M) included with FTF8-CTT chase
terminations for clearance and installation
details.
FTF8-CTDM
Termination Chimney

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 15
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" for indoor installa-
tions and 7' 9" for outdoor installations. The
maximum height is 60' 0."
MULTIPLE TERMINATIONS
If more than one termination is located in the
same chase or within the same general prox-
imity, we suggest they should be separated
in distance at least 24" horizontally from flue
center to flue center and stacked or staggered
vertically at least 18" apart, from the termination
of one smoke exit to the termination of another
smoke exit (Figure 44).
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 manu-
facturers 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 speci-
fied by all major building codes.
If the horizontal distance from the peak of the
roofis 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 op-
eration. Trees, buildings, adjoining roof lines,
adverse wind conditions, etc., may require a
taller chimney should the fireplace not draft
properly (refer to Figure 43).
Less Than 10'
3'
Min
2' Min.
10' 3'
Min
CTD
18"
18"
24" 24"
CTDT
CTDT
Figure 43
Figure 44
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 compo-
nents required, except chimney sections. This
would include firestop spacers, stabilizers, roof
flashing, etc.
3. The effective heights of the components
are:
The Fireplace = 42-1/4"
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-CTDTM Termination = 4"
FTF8-S4 Stabilizer * = 3"*
* Required for every 30' of vertical chimney
and/or 10' of offset chimney.
**FTF8-CT1 and FTF8-CTDT Terminations
are approved for indoor fireplace installa-
tions only.
4.Determine amountof 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
Chimneys 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 ARE NOT TO SCALE.
16
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 45). 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 46). 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 47).
A 1/8" diameter hole must be drilled in the
chimney joint using a 1/8 " diameter drill. The
hole should be drilled in center of joint overlap
(Figure 48). 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 the Offset Chart (Table 4)to deter-
mine 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.
Step3.Use Elevation Chart as jobestimator only.
Add necessary firestop spacers and stabilizers
as required. Firestop spacers must be used as
shown in Figures 31 & 32 and stabilizers as
shown in Figure 37.
FTF8 Vertical Elevation Chart
11" to 380 1/2"
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
Table 3a
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
FTF8 Vertical Elevation Chart
386 1/2" to 744"
Table 3b

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 17
Figure 45
Stabilizer
A
1
20'
Max.
B
1
10' Max.
Offset
Elbow
Return
Elbow
A
1
C
1
B
1
B
2
C
2
A
2
A
1
C
1
B
1
B
2
C
2
A
2
Chimney
Section
Joints
No. 8 x 1/2" SMS
t
A
de
r
i
u
qeR
sw
ercS '6
ts
a
P
t
n
i
oJ
yrevE
nI
der
iuqe
RswercS
o
Nt
es
ffO
f
o'
6
tsr
i
Fr
o
F
st
n
i
oJ
4'
6'
Underside Of Chimney
Chimney Section (S)
FTF8-E30 Return Elbow*
FTF8-30 Offset Elbow* B
A
*Part of Offset/Return Package Model FTF8-ES30
Figure 46
Figure 47
Figure 48
Figure 49
Step 1. Determine the offset distance where
chimney is to pass through the first
ceiling-dimension “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
appropriateOffsetElevation Chart tofind
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 In-
stallation 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 connec-
tion by pulling up slightly to ensure a tight fit.
Next, the outer sections snap lock OVER the
preceding outer section of chimney. Again,
check outer section by pulling up slightly to
ensure proper connection is made.
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 returnelbow to ensure
locking joint has firmly engaged.
Step 5. Secure support straps to framing
members by nailing under tension in
sheer (Figure 50).
INSTALLING OFFSETS
First, review the Offset Elevation Chart and
Figure 49 for reference.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
18
Offset Elevation Chart
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
924¹⁄₂ 101000
12 29 ³⁄₄ 100100
14 ¹⁄₄ 33 ¹⁄₂ 102000
17 ¹⁄₄ 38 ¹⁄₂ 101100
20 ¹⁄₄ 43 ³⁄₄ 100200
21 45 ¹⁄₄ 1 0 0010
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 11 10
35 ¹⁄₄ 69 ³⁄₄ 100101
37 ¹⁄₄ 73 ¹⁄₄ 100210
38 ¹⁄₄ 75 1 0 0 0 2 0
39 ¹⁄₄ 77 1 0 21 10
41 ¹⁄₂ 80 ¹⁄₂ 101400
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
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
70 130 1 1 1 1 3 0
73 135 ¹⁄₄ 1 1 0230
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
Table 4
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.
Return
Elbow
Figure 50
Gas Line Connection
Install a 1/2" gas supply line through fireplace
wall for connection to adecorative 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 con-
trolled by a removable valve key for safety.
Always plumb gas line installation per local
codes. Check all connections with a gas leak
detection solution for leaks (which will bubble
if present). Never test any gas line connection
with a match or open flame.
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 re-
quirements for Gas-Fired Log Lightersfor 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 ARE NOT TO SCALE. 19
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 INSTALL-
ING 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 MATE-
RIAL 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 instruc-
tions 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.
Vent Free Appliances
This unit has been tested and approved to
ANSI/IAS/AGA Z21.11.2 for use with unvented
gas appliances for INDOOR INSTALLATIONS
ONLY and complies with the standard for Fac-
tory-Built fireplaces, UL 127, when installed
with unvented gas log sets.
Special instructions with regards to mantel
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
26,000 BTU in Indoor installations only. The
minimum mantel configuration for these log
sets are outlined in Figure 52.
Log sets with 40,000 BTU may be installed
provided that no combustible mantel projec-
tions are placed lower than 18 inches from the
fireplace opening.
These fireplaces have been marked with a
maximum rating of 26,000 BTU to assure
that homeowners do not exceed the allowable
limits for all allowed installations of mantels.
That limit may be increased to 40,000 BTU,
provided that the mantel installed complies
with the 18-inch limitation and a copy of these
instructions are available.
IMPORTANT
Allowminimum1"*chimneyair
space to combustible framing
members throughout vertical or
offset chimney installation.
ATTENTION
Permettez1minimal”*l’espace
aérien de cheminée aux mem-
bres encadrants combustibles
partout dans vertical ou à
l’installation de cheminée de
rejeton.
*Note: In Canada, a 2” clearance to com-
bustibles is required.
• Outdoor installations less than 15’ height
require chimney clearance of 2” air space to
insulation and construction materials.
WARNING
Unvented Gas Log Sets are not
approved for use with fireplaces
installed outdoors. The materials
and components will deteriorate
prematurely if installed outside.
Refer to the log manufacturer’s
literature for limitations and
exceptions.
AVERTISSEMENT
Les ensembles de bûches à gaz
sans conduit d’évacuation ne sont
pas approuves pour l’usage avec
des foyers installes a l’exterieur.
Lesmateriauxet lescomposantes
sedeteriorerontprematurementsi
installees a l’exterieur. Referez-
vous a la litterature du fabricant
des buches pour les limites et les
exceptions.
CAUTION
Plumbing connections should
only be performed by a quali-
fied, licensed plumber. Main
gas supply must be off when
plumbing gas line to fireplace
or performing service.
ATTENTION
Les raccordements de tuy-
auterie devraient seulement
etre effectues par un plombier
qualifie et autorise. La valve
d’alimentation de gaz princi-
pale doit etre fermee lors de
l’installation ou de l’entretien
de ce foyer.
CAUTION
Certain glass doors overlap the
blackmetalfacingofthefireplace.
IFthefireplacehasbeenfacedwith
noncombustible materials, there
might not be sufficient clearance
to install the glass doors of your
choice.Ensureadequateclearance
ismaintainedatalltimessoasnot
tointerferewiththeinstallationand
operation of glass doors.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
20
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. Sur-
rounding materials must be caulked where it
meets the black metal facing of the fireplace to
avoid cold air intrusion. Use noncombustible
caulking material only onfireplace facing to seal.
Also, the outsideair inlet duct shouldbe wrapped
with noncombustible insulation to minimize
the formation of condensation. Do not place
insulationmaterialson top of fireplace or against
chimney sections. If gas logs are installed, the
gas line holes and other openings should be
caulked with high temperature caulk or stuffed
with unfaced fiberglass insulation.
Note: A 1"* air space must be preserved for
insulation and construction materials extend-
ing for any continuous length adjacent to the
chimney.
Itisespeciallyimportanttoinsulatebetweenthe
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
Itissometimesbesttoframe 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 touch but not rest its
weight on the two (2) metal top spacers on top
of the unit. The header must not be notched to
fit around the spacers.
These fireplaces may sit directly on a com-
bustible surface. A 1"* air space is required
between insulation and construction material
and the chimney. A 1" air space is required
between combustible framing and fireplace
outer wrapper.
In Canada, the minimum height for a combus-
tible mantel is 18" (457 mm) above the fireplace
opening. Figure 51 shows typical Canadian
installations. Combustible mantels and trim
maybeinstalled12"abovethefireplaceopening
as per NFPA 211-latest edition. and Figure 52.
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.
*Note: 2" clearance to combustibles required
in Canada.
Note: Do not place any combustible materials
on the fireplace face.
ATTENTION
Certaines portes de verre recou-
vrent le revêtement noir en métal
du foyer. SI la façade du foyer a
étérecouverteavecdesmatériaux
non-combustibles, il se pourrait
qu’il n’y ait pas suffisament de
dégagement pour installer les
portes de verre de votre choix.
Assurez d’avoir un dégagmet suf-
fisant à tout moment afin de ne
pasinterféreravecl’installationet
l’opération des portes de verre.
WARNING
Only non-combustible materials
are allowed on front face (front
fireplace frame) and around the
perimeter within 5" minimum on
top and 1/2" on sides.
AVERTISSEMENT
Seulement on permet des maté-
riaux non-combustibles sur le
visage avant (armature avant de
cheminée) et autour du périmètre
à moins de 5 pouces sur le dessus
et de pouce de 1/2 des côtés.
Figure 52 - Typical Installation
12"*
Min. 9-5/8"*
Min.
Fireplace
Opening
Spacer
Combustible
Mantel
and Trim
12"
Max.
1 1/2"
Finished
Wall
Header
*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).
❂
5 " Min.
❂
The shaded gray area indicates non-combustible
materal is required.
Fireplace
Opening
Top Spacer
on Appliance
Combustible
Mantel
8" Max.
(203mm)
Finished
Wall
Header
18" Max.
❂
5" Min.
(457mm)
❂
The shaded gray area indicates non-combustible
materal is required.
Figure 51 - Canadian Installation
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 (see Figure
53). 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/FT2 HR °F or a thermal resistance
that equals or exceeds r = 1.19 HR °F FT2/BTU
IN. With these values, determine the minimum
thickness/material required using the formula
and Table 5 on Page 21.
Note: Any noncombustible material having
a thickness of 1" whose k value is less than
.84 or whose r value is more than 1.19 is ac-
ceptable.
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 21 & 22).
A wall shield is required where a continuous
perpendicular side wall is within 12" of the
fireplace opening (Figure 53). Use a 24" W x
30" H x 1/2" wall shield constructed of a durable,
noncombustible material having an equal or
better (lower k value) insulating value than
k = .54 BTU IN/FT2HR °F. At no time may a
perpendicular side wall be located closer than
7" from the fireplace opening.
If fireplace is installed diagonally across a 90°
corner; no wall shields are required.