Lennox MONTE User Manual
INSTALLATION AND
TM
OPERATION INSTRUCTIONS
MONTECITO™
EPA Wood-Burning Fireplace
P/N 850,037M REV. J 11/2008
MODEL
MONTE
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.
Lennox Hearth Products wood-burning fireplaces are designed for use
as a supplemental heater. They are not intended for continuous use
as a primary heat source.
SAVE THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNINGS
• Hot! Do not touch! The glass and
surfaces of this appliance will be hot
during operation and will retain heat
for a while after shutting off the appliance. Severe burns may result.
• Carefully supervise children in the
same room as appliance.
• If small children are present in the home, it
is recommended that this appliance be fitted
with a firescreen kit. See Page 21 for ordering
information.
Listed to standards:
ULC-S610 and UL-127
Report No. 307-4084
EPA Cert. No. 537
Fireplace, also for use in mobile or
manufactured homes with solid fuel only.
WARNINGS
• The fireplace cannot be operated without a door.
Consult your dealer to select the correct door
model.
• 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.
• Install the fireplace only as described in these
instructions.
PIMONTECITO REV. 5 NOV 2008
IMPORTANT! GENERAL SAFETY
PRE CAUT IONS . REA D AND
UNDERSTAND THESE SAFETY
RULES BEFORE YOUR FIRST FIRE.
WARNING
The Montecito™ fireplace must
be installed with an outside air
kit intake, which is included with
the fireplace
WARNING
THE FIREPLACE MUST BE OPERATED WITH THE DOORS FULLY
OPENED OR DOORS FULLY CLOSED.
IF THE DOORS ARE LEFT PARTLY
OPENED, GAS AND FLAME MAY BE
DRAWN OUT OF THE FIREPLACE
OPENING, CREATING RISKS OF
BOTH FIRE AND SMOKE. IF THE
UNIT IS OPERATED WITH THE
DOORS FULLY OPENED, THE FIRE
SCREEN MUST BE USED.
WARNING
NEVER use gasoline, gasolinetype lantern fuel, kerosene,
charcoal lighter fluid, naphtha,
engine oil or similar liquids to
start or “freshen up” a fire in this
fireplace. Keep any flammable
liquids a safe distance from the
fireplace at all times.
WARNING
THIS FIREPLACE HAS NOT BEEN
TESTED WITH AN UNVENTED
GAS OR A FIREPLACE INSERT.
TO REDUCE RIS K OF FIRE OR
INJURY, DO NOT INSTALL AN
UNVENTED GAS LOG SET OR
FIREPLACE INSERT OR OTHER
PRODUCTS NOT SPECIFIED FOR
USE WITH THIS FIREPLACE.
WARNING
Never leave your fireplace unattended while it is burning.
WARNING
To avoid the risk of damaging
fireplace materials and increasing the risk of fire, do not use the
fireplace to cook or warm food.
2
WARNING
Use care when selecting window
treatments for windows located
near the fireplace. Avoid using
combustible flowing window
treatments such as curtains on
nearby windows that are of sufficient length to be blown in front
of an open flame when the window
is opened. Keep any combustible
furniture, materials or decorative
pillows at least 48" (1219 mm)
from the front fireplace opening.
WARNING
Never modify or alter your fireplace
system in any way. To do so may
create a potential fire hazard and
void the Limited Warranty.
IMPORTANT
When burning wood, use SOLID
NATURAL DRY WELL-SEASONED
WOOD ONLY. Hardwoods are recommended (soft woods tend to burn
very quickly).
• DO NOT burn treated wood,
charcoal, coal, trash, cardboard,
driftwood, woods dipped in tar,
Christmas tree greens, pitch, pine
tar, creosote, chemical chimney
cleaners, flame colorants, polystyrene packaging, wood products with synthetic binders (i.e.
plywood). Plywood, lumber and
other misc. materials can produce
abnormally high temperatures,
sputtering and smoking fires and
may contain hazardous chemicals
to treat insects and fungus.
• Burning unapproved fuels can
produce excessive temperatures,
beyond the design capabilities
of the fireplace and may produce
excess sparks or may contain
hazardous chemicals. Burning
unapproved fuels can result in
a chimney fire, a house fire,
personal injury, death or loss of
property.
WARNING
Never leave children unattended
when there is a fire burning in the
fireplace.
WARNING
Always ensure that the air inlet to
the fireplace is free from debris
and any other obstructions that
can block the entrance of air.
IMPORTANT
WHEN INSTALLED IN A MOBILE OR
MANUFACTURED HOME:
• Mobile or manufactured home
installations must be installed in
accordance with the requirements
of the Department of Housing and
Urban Development (HUD) “Mobile
Home Construction and Safety standards” for US or Canada Mortgage
and Housing Corporation (CMHC)
for Canada.
• The fireplace must be fastened to
the floor by unfolding and screwing
the small tabs on both sides at the
bottom of the fireplace.
• It is necessary to have access
openings, for inspection purpose
only, into built-in enclosures surrounding the fireplace installation.
Such openings to require a household tool for access.
• The vapor barrier of the mobile
home shall be as close as possible
of the location where the chimney
assembly penetrates the ceiling
and roof structure with no interference to the required clearance to
combustible material.
• When the mobile or manufactured
home has a flat roof, the Attic Radiation Shield must be installed from
below going through the roof (See
Figures 22b and 22d).
• Warning: Do not install in a
sleeping room
WARNING
Neither the manufacturer nor the
seller warrants “smoke free”
operation 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.
CONGRATULATIONS!
In selecting this Lennox Hearth Products wood-burning appliance you have chosen one
of the finest fireplaces available. The Montecito™ wood burning fireplace is a clean burning EPA certified fireplace that is designed to provide you dependable service as well as
warmth and enjoyment for many years to come.
Please carefully read and follow all of the instructions found in this manual. Please pay
special attention to the safety instructions provided in this manual. This information
will be useful to you now and in years to come, so keep the manual handy and refer to
it as needed.
TABLE OF CONTENTS
Safety Rules and Specifications for
Mobile or Manufactured
Home Installation .........................Page 2
Introduction ......................................Page 3
Parts Required .................................Page 3
Optional Equipment ...........................Page 3
Operating The Montecito Fireplace ....Page 3
Fuel ...................................................Page 3
Starting And Maintaining A Fire ........Page 4
Combustion Control .........................Page 4
Refueling For Best Performance .......Page 4
Smoking – Causes And
Troubleshooting .............................. Page 4
Important Cautions ...........................Page 5
Maintaining Your
Montecito Fireplace ......................... Page 5
Creosote ............................................Page 5
Chimney Maintenance ....................... Page 5
Dealing With A Chimney Fire .............Page 5
Finish Door Casing Care ....................Page 5
Disposing of Ashes ...........................Page 6
Refractory Installation ....................... Page 6
Door Installation ...............................Page 6
Door Adjustment ............................... Page 6
Glass Care - Replacement .................Page 7
Glass Care - Cleaning ........................Page 7
Gasket Replacement ........................Page 7
Fireplace Installation ........................Page 7
Locating The Montecito Fireplace .....Page 7
Framing, Facing And Mantel ..............Page 8
Hearth Extension Requirements ....... Page 8
Cold Climate Installations ..................Page 8
Fireplace Blower ................................Page 11
Hot Air Ducting Installation ..............Page 11
Gravity Kit .........................................Page 11
Outside Air Kit ..................................Page 13
Chimney System ...............................Page 13
Chimney Installation Notes ...............Page 13
Chimney Installation Instructions ......Page 13
Offset Chimney Installation ...............Page 15
Angled Wall Radiation Shield ............Page 18
Chimney Support Installation ............ Page 19
Chimney Chase And
Multiple Terminations......................Page 19
Masonry Application Instructions .....Page 20
Installation Accessories ....................Page 21
Chimney Components Lists ..............Page 21
Replacement Parts ............................Page 23
Product Reference Information .........Page 24
THE FIREPLACE
INTRODUCTION
The Montecito wood-burning fireplace is an
energy efficient, heat circulating, closed combustion fireplace. You will receive a lifetime
of comfort and enjoyment from your fireplace
provided it is installed, maintained and operated properly.
• Please read these instructions and retain
this manual for future reference.
• Before beginning the fireplace installation,
consult the local authorities to obtain your
building permit and check your local building
codes. Install the fireplace only as described
in these instructions and using only Lennox
Hearth Products components.
• The Montecito fireplace is NOT intended
for use with a gas log set. Do not use a
fireplace insert or any other product with
this fireplace unless it is specified by Lennox
for use with this appliance. Failure to follow
these instructions will void the certification
and the warranty of the fireplace and may
result in an unsafe installation.
• These appliances are designed to provide
supplemental heat to the immediate area
only. Therefore, it is advisable to have an
alternate heat source when installed in a
dwelling.
PARTS REQUIRED
Fireplace Model MONTE
• 6” diameter chimney
S-2100+, HT6000+, HT6103+ or AC manufactured by Security Chimneys International
only, including:
- Chimney lengths
- Elbows
- Associated components as per these
installation instructions
(where necessary)
- Model ASHT+,
• ..Decorative Door - Required
....(Order Separately - See Page 21)
• Front Facade kit - Required
...(Order Separately - See Page 21)
• UZY5 blower (included in the fireplace).
• VRUW Blower Speed Control (included)
• Outside air kit (Included w/Fireplace)
OPTIONAL EQUIPMENT
• Additional Equipment (optional)
- AC Chimney Adaptor
(required if using AC Chimney)
- AC Chimney Outside Air Kit
- Gravity Venting System
- Rigid Firescreen
OPERATING THE MONTECITO
FIREPLACE
Fuel
USE SOLID NATURAL WOOD FUEL ONLY. The
Montecito fireplace is designed to work best
when fueled with dry seasoned natural wood
only. Hardwoods are preferred to softwoods
since the energy content of wood is relative to
its density. Hardwoods will result in a longer
burning fire and less frequent refueling. A
moisture content of 15% to 20% (seasoned)
is recommended. Wood that has been cut and
split and let to dry under a cover for a period
of one year will usually meet that criteria.
Excessively wet wood will be difficult to burn
and will result in lower efficiency, increased
creosoting and deposits on the glass and in
the chimney. Excessively dry wood will burn
well but will also have higher emissions and
shorter burning time.
Do not burn scrap or garbage, treated wood or
wood such as driftwood from the ocean which
has been exposed to salt or other chemicals.
Salt or chemicals can corrode the firebox and
chimney. Do not burn large amounts of paper,
cardboard, Christmas tree branches or building construction materials. Intense firing with
these materials may overheat the fireplace,
causing damage to the unit, a fire or even
possibly igniting a chimney fire if the chimney
is creosoted.
First Fires
Before using the fireplace make sure to remove the plastic wrapping and EPA label on
the door. Remove any glue residue left by the
label using mild soap.
The first five or six fires should be small fires of
short duration (about 30 to 60 minutes). This
will help cure the refractory bricks. The first
fires may produce slight smoking and some
odor due to curing of the paint and steel and
the burning off of dust accumulated on the
fireplace will burn off at this time. It may set off
a smoke alarm located in the same room. For
this reason the room should be well ventilated
for the first few fires.
WARNING
Be careful adding wood fuel to the
fire or handling fireplace tools such
as shovels, tongs or pokers.
WARNING
The bottom refractory can be
cracked by excessive abuse such
as tossing heavy logs onto the
grate or gouging with fireplace
tools. Exercise caution when
adding wood to your fireplace.
3
Building a Fire
(starting and maintaining a fire)
To start a fire, place several crumpled up balls of
newspaper in the firebox. Place small dry pieces
of kindling on top of the paper, criss-crossing the
kindling so that there are air spaces in between.
Keep the fuel far back enough so that air can
get underneath. Open the air controls fully
and light the newspaper. Once the newspaper
and the kindling is well ignited, close the door.
Once the kindling fire is well established, cord
wood can be added (see Primary Air Combus-
tion Control section for proper operation of the
air controls).
The unit will burn best with 2-3 pieces of cord
wood spaced 1 to 2 inches apart and allowing air
to get under the fuel. Criss-crossing or arranging the fuel so that air can get underneath, will
help the fire to get started easily. The unit should
be operated with the air control fully open long
enough to get the cord wood well ignited.
COMBUSTION CONTROLS
Primary Air and Air Boost Controls
There is no flue damper in the Montecito™ wood
burning fireplace. As is common with air tight
stoves, the combustion air control sets the flow
of air entering the firebox. This allows for a
more precise control of the fire. The combustion air control is located below the door on
the left side. The main source of air (primary
air) entering the firebox can be diminished by
moving the air combustion control from left
to right. The primary air is fully opened when
the air control is completely moved to the left.
The air control device can also be used to add
an extra boost of air especially during fire start
up and reloading of the unit.
Pulling the air combustion control will induce an
air boost at the base of the fire allowing an easier
fire start up. When the fire is well established,
the control can be pushed in to shut down the
air boost allowing for a longer burn time. The
combustion air control should be in the closed
position (primary air and air boost) when the
fireplace is not in use. This will minimize air
leakage up the chimney. The combustion air
control should be opened before opening the
door to minimize the possibility of back draft
coming into the room.
Accelerated Combustion
The maximum heat output for the Montecito
fireplace is achieved by burning with the door
closed and the combustion air opened and
pulled out. By this method, the Montecito
fireplace can produce up to 55,000 BTU of
heat per hour. However, it will be necessary
to reload with wood every one or two hours.
This is the least efficient method of burning the
Montecito fireplace.
Use caution when firing with the combustion
air control wide open. Only burn cord wood in
this manner. Small dry pieces of softwood and
construction scraps will burn very intensely using this method and may damage the firebox.
Medium Combustion
This is the recommended mode of operating
the Montecito fireplace and should be the one
normally used since it will deposit the least
amount of creosote on the glass and in the
chimney. The combustion air control must be
3/4 closed and pushed in to close the air boost.
The precise setting will depend on many factors, including chimney length and the moisture
content of the wood.
For instance, a long chimney will necessitate
closing the damper more. To obtain the proper
combustion, close the damper completely, then
open it about 1/4” to 1/2”. Three medium size
pieces of wood should be burning on a bed of
hot coals. The heat output will be approximately
30,000 BTU per hour and the loading time will
be about every 3-4 hours. Softwoods may be
burned using this method but the time will be
substantially reduced.
Slow Combustion
When the air combustion control is completely
closed, the fireplace is in a slow combustion phase.
If the hearth is hot enough, slow combustion will
not extinguish the fire, but there will be a noticeable change in the flame pattern. The flames will
be slow and may appear dirty if the wood is too
wet (moisture content of 20% and more). Do not
allow the wood to burn without flame, since this
will produce excessive creosote in the unit.
Creosote may accumulate on the glass door.
This method of burning should be used only
after operating the Montecito fireplace with
the air control opened to produce a hot fire for
about an hour or at medium pace for at least
three (3) hours. Slow combustion can be used
at night in order to reduce the heat output and
to prolong the burn. The loading time will be
between 6-8 hours.
REFUELING FOR BEST PERFORMANCE
The Montecito fireplace will operate best if attention is given to operating the unit with the
damper fully opened after refueling in order
to bring the firebox and the chimney system
up to their optimum operating temperature.
Combustion efficiency is relative to firebox
temperature. A temperature of 500º C (932º F)
and up, with a visible flame, in the upper part
of the firebox indicates a maximum efficiency.
To obtain this temperature, the fireplace must
be operated with the primary air and air boost
controls fully opened during 10 to 20 minutes
after reloading, depending on the heat and on
the moisture content of the wood.
Once you have reached the desired temperature,
the air boost can be closed and the primary air
set to a medium setting. You know you have
reached the desired temperature when, closing
the primary air control, you can see a flame
at the top of the firebox. The benefit of this
Push to Close Air Boost
technique will be cleaner glass, less creosoting,
greater efficiency and the most pleasing fire for
your enjoyment.
Combustion Air Register
Pull to Open Air Boost
SMOKING –
CAUSES AND TROUBLESHOOTING
To reduce the likelihood of smoking when opening the door, set the combustion air controls to
Close
Open
Figure 1
4
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
the left before opening the door. Your fireplace
has been designed and tested to provide smoke
free operation. Occasionally, there may be a
small amount of smoking upon lighting the fire,
until the chimney heats up but this should not
continue. If the fireplace continues to smoke it
is probably for one of the following reasons:
A. Negative pressure in the house
As the fire burns, air goes up the chimney.
This air must be replaced through leakage
into the house or through the outside air
duct. When operating the Montecito fireplace, open a nearby window temporarily
to check if there is adequate replacement
air supply.
B. Fans operating (e.g.: range hood)
These fans draw air out of the house and
may actually cause a negative pressure in the
house. Turn off all fans and open a nearby
window to determine if this is the cause of
the problem.
C. Wet wood
Wet or tarred wood will smoulder and smoke
instead of burn properly.
D. Dirty or blocked chimney
Check to make sure the chimney is clear and
clean.
E. Chimney not long enough
The minimum chimney height is twelve
(12) feet (3.7 m) not including the fireplace
height. The chimney must extend at least
three (3) feet (915 mm) above its point
of contact with the roof and at least two
(2) feet (610 mm) higher than any roof or
wall within ten (10) feet (3 m) of it. When
installed with offsets, the minimum chimney
height is fifteen (15) feet (4.6 m). Additional
height will increase draft and will decrease
the tendency to smoke.
F. Poor chimney draft
With no fire, there should be sufficient draft to
exhaust cigarette smoke introduced under the
baffle. Chimneys installed against an outside
wall without protection may generate back draft
problems which will cause start-up problems.
To prevent this, open a nearby window, roll up
a piece of paper and light it. Then, hold it in
the upper part of the firebox to warm up the
chimney. Wait until the draft is sufficient, then
start the fire.
IMPORTANT CAUTIONS
A. Do not block the hot air vents to the fire-
place as this will cause the fireplace to
overheat.
B. 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 all such liquids
well away from the fireplace while it is in
use.
C. Do not burn coal. The sulphur in coal will
corrode the firebox.
D. Do not burn driftwood which has been in the
ocean or salt water. The salt will corrode
the firebox and chimney.
E. Do not burn wood in the area in front of the
grate.
F. Do not abuse the unit by burning paper, or
cardboard or construction material such as
pressed wood, plywood or lumber.
G. Do not allow the wood to smoulder or burn
without flame, since this will produce
excessive creosote in the unit.
MAINTAINING YOUR MONTECITO™
FIREPLACE
Creosote - Formation and Need for Removal
When wood is burned slowly, it produces tar
and other organic vapors, which combine
with expelled moisture to form creosote. The
creosote vapors condense in the relatively
cool chimney flue of a slow-burning fire. As
a result, creosote residue accumulates on the
flue lining. When ignited this creosote makes
and extremely hot fire.
The chimney shall be inspected at least twice
a year during the heating season to determine
when a creosote buildup has occurred.
When creosote has accumulated it shall be
removed to reduce the risk of a chimney fire.
When the creosote accumulation is large, a
creosote fire in the chimney can damage the
chimney and overheat the surrounding wood
framing. Creosote formation in a chimney can
be minimized by making sure there is always
visible flame burning, avoid smouldering fires
and by proper refuelling techniques.
Chimney Maintenance
Regular chimney inspection and maintenance
combined with proper operation will prevent
chimney fires. Keep your chimney clean. Do not
allow more than 1/16” (1.6 mm) creosote build
up in your chimney. The amount of creosote will
depend on variables such as frequency of use
and type of fire. We recommend that you:
A. Initially inspect the chimney system weekly.
From this, you will learn how often it will be
necessary to clean your chimney.
B. Have your chimney cleaned by a qualified
chimney sweep. If you wish to clean it
yourself, we recommend using a stiff plastic
or non-metallic brush. If a metal brush is
used, its size should be slightly smaller than
the flue to avoid damaging the chimney. Do
not use a brush that will scratch the stainless
steel interior of the chimney.
C. Do not expect chemical cleaners to keep
your chimney clean. The rain cap can be
removed for inspection and/or cleaning of
the chimney.
Dealing With a Chimney Fire
Regular chimney maintenance and inspection
can prevent chimney fires. If you have a chimney
fire, follow these steps:
1. Close the fireplace door and the combustion
air controls.
2. Alert your family of the possible danger.
3. If you require assistance, alert your fire
department.
4. If possible, use a dry chemical fire extin
guisher, baking soda or sand to control the
fire. Do not use water as it may cause a
dangerous steam explosion.
5. Check outside to ensure that sparks and hot
embers coming out of the chimney are not
igniting the roof.
6. Do not use the fireplace again until your
chimney and fireplace have been inspected
by a qualified chimney sweep or a Fire
Department Inspector.
Top Baffle Removal Prior to Cleaning The
Chimney
Before starting to clean your chimney, we
recommend that you remove the top baffle to
avoid creosote dust collection at the top of the
baffle. Follow these steps to set the top baffle
out of the way:
1. Remove the side refractory holder. They are
located at the top of the refractory.
2. Lift the front baffle.
3. Slide the back baffle under the front baffle.
You now have access to the chimney.
Figure 2A - Top Baffle Removal
Figure 2B - Top Baffle Removal
Finish Door Casing Care
Use a glass cleaner and a soft cloth to polish
the casing. Do not use abrasives such as steel
wool, steel pads or an abrasive polish for they
may scratch the casing’s finish.
-
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
5
DISPOSING OF ASHES
Remove ashes only when the fire is out and
the ashes are cold (24 to 48 hours after the
fire is out).
WARNING
Disposal of Ashes: Ashes should
be placed in a metal container
with a tight fitting lid. The closed
container of ashes should be
placed on a non-combustible
floor or on the ground well away
from all combustible materials,
pending final disposal. If the
ashes are disposed of by burial
in soil or otherwise locally dispersed, they should be retained
in the closed container until
all cinders have thoroughly
cooled.
REFRACTORY REPLACEMENT
The intense heat of the fire will normally cause
hairline cracks in the refractory. These cracks
can be minimized by proper curing as described
in “First Fires”. They will not normally diminish the effectiveness of the refractory. If large
cracks develop, then the refractory should be
replaced. To replace the refractory bricks, follow these steps:
1. Remove the front refractories
2. Remove the bottom refractory
3. Remove the left side refractory
4. Remove the right side refractory
5. Remove the back refractory
6. Remove the front ceramic baffle
7. Remove the rear ceramic baffle
To install the new refractories, follow the above
steps in reverse.
7
6
4
1. Front Refractories
2. Bottom Refractory
3. Left Side Refractory
4. Right Side Refractory
5. Back Refractory
6. Front Ceramic Baffle
7. Rear Ceramic Baffle
Figure 3
5
3
2
1
DOOR INSTALLATION
The door must be installed only when the installation of the Montecito™ fireplace is completed.
All you have to do is fit the male part of the hinge, already on the door, to the female part, which
is on the fireplace. To remove the door, simply pull the door up from the hinges (see Figure 4).
The door adjustment has been set at the factory. If the fit is still not perfect, you can adjust the
door using the hinge screws.
DOOR ADJUSTMENT
The door may need to be adjusted to be completely airtight. The gaskets’ air-tightness can be
adjusted using the adjustment screw located on the right side of the fireplace facade (An Allen key
#1/8 – not supplied - will be necessary for this adjustment).
Checking Door Seal
A one-inch strip of paper may be used to perform a test of the integrity of the door seal. Close
the door on the paper in at least eight points. It is normal to feel only a slight amount of friction.
The door gasket does not need to be “tight” in all areas, since a small amount of leakage is not
hazardous or detrimental to the performance of your fireplace.
WARNINGS
• Use only a Lennox Hearth Products glass doors, specifically designed
for the Montecito fireplace.
• The fireplace cannot be operated without a door. Consult your dealer
to select the correct door model.
• 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.
Hinges Adjustment
Figure 4
6
Door Installation
Figure 5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Gasket Adjustment Screw
Facade Installation
Install the Facade per instructions provided in
Facade Kit (ordered separately - see Page 21).
Framing, Facing And Mantel
The construction of the framing, facing, and
mantel must be in accordance with the standards and the following illustrations (Figures
10 and 11
):
A. Frame the fireplace using 2” x 3” or heavier
lumber.
B. WARNING: Combustible materials can-
not be used in the space directly above
the fireplace, except for the studs above
the facade that support the facing and
mantel. This area must remain empty
for a height of 6’8” (2,032 mm) measured from the base of the appliance.
C. Frame the fireplace with vertical studs at the
sides of the fireplace running from floor to
ceiling (see Figure 8). If combustible facing
is to be used, position the studs back, from
the front edge of the fireplace (a space that
is the thickness of the facing material, so
that the facing can be installed flush with the
fireplace facing). Frame headers between
the vertical studs only as follows:
• Place 2” x 3” or 2” x 4” headers,
only along the upper part of the front,
side and back faces (some codes
may require a 2” x 6” on an outside
bearing wall). Do not put wood or
any combustible material within the
area above the fireplace except on the
front facing.
• Place headers only as required to sup
port the facing and mantel.
D. WARNING: The fireplace must not be in
contact with any insulation or loose filling material. Cover the insulation with
drywall panels around the fireplace.
Hearth Extension Requirements
The Brentwood fireplace may be installed
directly on a combustible floor. The supplied
safety metal strip must be positioned as follows: One half under the front of the fireplace
and the other half must extend on the floor
over which the hearth extension will be built
(see Figure 7A).
* The safety metal strip must cover the entire
width of the fireplace.
The combustible floor in front of the fireplace
must be covered with a non-combustible material (tile, marble, stone, etc). See Figures 7B.
COLD CLIMATE INSTALLATIONS
Climates where temperatures will fall below
32° F (0° C).
The heating performance of the appliance will
vary depending upon the level of insulation,
house design, how the appliance is operated,
etc.
If this fireplace is being installed in a cold
climate, it is especially important to seal all
cracks around the fireplace and wherever cold
air could enter the room with noncombustible
material.
Fireplace
The crack between the fireplace
and the hearth extension must be
sealed with a non-combustible
material such as sand-cement
grout.
Elevated Fireplaces
Safety Metal Strip
Floor
WARNING: THE HEARTH EXTENSION IS TO BE INSTALLED ONLY
AS ILLUSTRATED.
Hearth Extension
Non-Combustible
Finish Material
1/2”
13mm
Fireplace
u Elevated fireplace installations
require a special “Z” Metal
Safety Strips (field provided),
in place of the safety metal strip
shown above. The safety strip
should extend the full width of
the fireplace. When more than
one safety strip is used they must
overlap by a minimum of 1”.
Figure 7A - Hearth Extension Requirements
-
Mantel
42”
(1067mm)
Min.
Hearth
Extension
18”
Figure 7B
(457mm)
Non-Combustible Material
Also, the outside air inlet duct should be wrapped with noncombustible insulation to minimize
the formation of condensation. Do not place insulation materials directly against the chimney
sections. We recommend that you use the insulated wall radiation shield since it will maintain the
home’s thermal barrier. AC chimney is NOT recommended in very cold climates (in areas with
temperatures below 0° F (-18° C).
Platform
2”
4”
(102mm)
36”
(914mm)
u
Area where wood
Mantel can be
installed
45 Deg.
17” Min.
(432mm)
7
FRAMING DIMENSIONS
Header
B
A
OUTSIDE CHASE
G
C
A
Back Wall of Chase/Enclosure
Including Finising Materials if any
Rough Framing Face (Unfinished Shown)
* Zero Clearance
From Back
Spacer to Wall
9-3/4”
28-1/32”
1”
13-15/16”
10-3/8”
24”
22-19/32”
36-1/16”
36”
42”
22-1/2”
12-1/4”
3-1/4”
6-3/4
8-1/4”
17-3/4”
24”
15-1/2”
12-3/4
3-3/4
17-3/4”
K
Combustion Air Kit
Fireplace Opening Width
A 36-1/4” 921 mm
B 42” 1067 mm
C 30-1/16” 764 mm
D 13-1/2” 343 mm
E 77” 1956 mm
F 37-1/2” 953 mm
G *24-1/2” 603 mm
J 53-3/4” 1365 mm
K 8” 203 mm
L 1” 25 mm
Combustible materials can NOT
be used in the space directly
above the fireplace. Do not fill
the space above the fireplace
with any material (Except the
wood framing)
* Total depth is 25 inches (635mm) including the
back spacer minus 1/2 inch (13mm) for drywall
to be flush with the facing.
2” x 3”
Min.
Plywood 1/2”
Corner Installation
F
20-1/2”
D
E
19-19/32”
J
Notes
Due to Lennox Hearth Products ongoing commitment to
quality, all specifications, ratings and dimensions are
subject to change without notice.
All framing dimensions calculated for 1/2" dry wall at
the fireplace face. If sheathing the chase or finishing
with other thickness materials, calculations will need
to be made.
* The fireplace must not be in contact with any insula
tion or loose filling material. Cover the insulation with
Drywall panels around the fireplace.
-
7’
Min.
B
Rough Framing Face
(dimension includes finish
material inside framing, if any)
G
8
Figure 8 - Framing Dimensions
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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