Lennox Ladera-BK User Manual
INSTALLATION AND
TM
OPERATION INSTRUCTIONS
Ladera™
EPA Wood-Burning Fireplace
P/N 506023-03 REV. A 11/2008
MODELS
Ladera-BK
Ladera-BN
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.
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.
Listed to standards:
ULC-S610 and UL-127
Report # 3151759
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.
WARNINGS
• The fireplace cannot be operated without a
door.
• The fireplace is equipped with a blower, electrical connection must be made prior to fireplace
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.
• Install the fireplace only as described in these
instructions.
PILADERA REV. 1 NOV 2008
IMPORTANT! GENERAL SAFETY
PRE CA UTIO N S. RE AD AND
UNDERSTAND THESE SAFETY
RULES BEFORE YOUR FIRST FIRE.
WARNING
THE FIREPLACE MUST BE OPERATED WITH THE DOORS FULLY
OPENED OR DO O RS 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 RISK 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 children unattended
when there is a fire burning in the
fireplace.
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 leave your fireplace unattended while it is burning.
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
To avoid the risk of damaging
fireplace materials and increasing the risk of fire, do not use the
fireplace to cook or warm food.
WARNING
Be careful adding wood fuel to the
fire or handling fireplace tools such
as shovels, tongs or pokers.
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.
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.
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.
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.
2
CONGRATULATIONS!
In selecting this Lennox Hearth Products wood-burning appliance you have chosen one
of the finest fireplaces available. The Ladera™ fireplace is a clean burning EPA certified
high efficiency 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 ......................................Page 2
Introduction ......................................Page 3
Parts Required .................................Page 3
Optional Equipment ...........................Page 3
Operating The Ladera 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
Ladera Fireplace .........................Page 5
Creosote ............................................Page 5
Chimney Maintenance .......................Page 5
Dealing With A Chimney Fire .............Page 5
Top Baffle Removal ...........................Page 5
Finish Door Casing Care ....................Page 5
Disposing of Ashes ...........................Page 6
Refractory Installation .......................Page 6
Door Removal ...................................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 Ladera Fireplace ...........Page 7
Optional Cast Facade Installation ......Page 8
Hearth Extension Requirements .......Page 8
Framing, Facing And Mantel ..............Page 9
Fireplace Blower ................................Page 11
Hot Air Ducting Installation ..............Page 11
Gravity Kit .........................................Page 11
Central Forced Air Kit ............................Page 12
Outside Air Kit ..................................Page 13
Chimney System ...............................Page 14
Chimney Installation Notes ...............Page 14
Chimney Installation Instructions ......Page 15
Offset Chimney Installation ...............Page 16
Angled Wall Radiation Shield ............Page 19
Chimney Support Installation ............Page 20
Chimney Chase And
Multiple Terminations......................Page 20
Masonry Application Instructions .....Page 21
Installation Accessories ....................Page 22
Chimney Components Lists ..............Page 22
Replacement Parts ............................Page 24
Warranty ...........................................Page 25
Product Reference Information .........Page 26
THE FIREPLACE
INTRODUCTION
The Ladera 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 Ladera 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 Hearth Products 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.
• These appliances are not approved for
Manufactured Home installations.
PARTS REQUIRED
Fireplace Model Ladera
• 6” diameter chimney
S-2100+, HT6000+, HT6103+ or AC manufactured by Security Chimneys International
only.
OR
• 7” diameter chimney
HT6103 manufactured by Security Chimneys
International only.
6” and 7” Chimneys Includes:
- Chimney lengths
- Elbows
- Associated components as per these
installation instructions
• Decorative Door (included in the fireplace)
• UZY6 blower
(where necessary)
(Included w/Fireplace)
- Model ASHT+,
- Model ASHT and
OPTIONAL EQUIPMENT
Order Separately - See Pages 22 and 23
• Additional Equipment (optional)
- AC Chimney Starter Section and
AC Chimney
- Outside Air Kit
(required if using AC Chimney)
- Chimney Adaptor 7 inch (6AW7)
(If you choose to use 7 inch ASHT or
HT6103 chimney)
- Gravity Venting System
- Rigid Firescreen
- Forced Air Kit
- Cast Facade Kit
- Blower Speed Control (VRUW)
- Blower Thermodisc Heat Switch
Control (VTU)
- Outside air kit
u
Not tested under EPA certification. If installed, this appliance no longer qualifies
for EPA certification.
u
OPERATING THE LADERA FIREPLACE
Fuel
USE SOLID NATURAL WOOD FUEL ONLY. The
Ladera 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.
3
Building a Fire
(starting and maintaining a fire)
Note: Leave 1/2 inch of ashes at the bottom
of the firebox.
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 1-2 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 Ladera™ 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 Ladera
fireplace is achieved by burning with the door
closed and the combustion air opened. By this
method, the Ladera fireplace can produce the
maximum 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 Ladera 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
Ladera 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” (6.4mm to 13mm).
Two medium size pieces of wood should be
burning on a bed of hot coals. The heat output
will be approximately 25,000 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 Ladera 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 Ladera 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
technique will be cleaner glass, less creosoting,
Push to Close Air Boost
Combustion Air Register
greater efficiency and the most pleasing fire for
your enjoyment.
SMOKING –
CAUSES AND TROUBLESHOOTING
To reduce the likelihood of smoking when open-
Pull to Open Air Boost
Open
Ouvert
Closed
Ferme
Figure 1
4
ing the door, set the combustion air controls to
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
(optional). When operating the Ladera™
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 or a basement installation 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 LADERA
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. Slide the front baffle to the front of the
unit.
2. Lift the back baffle and slide it over 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
Note: For better performances, we recommend
leaving 1/2 inch of ashes in the firebox.
Remove ashes only when the fire is out and the
ashes are cold (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 (see Figure 3):
1. Remove the bottom refractory
2. Remove the front refractories
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
1. Bottom Refractory
2. Front Refractories
3. Left Side Refractory
4. Right Side Refractory
5. Back Refractory
6. Front Ceramic Baffle
7. Rear Ceramic Baffle
Figure 3
5
3
1
2
6
4
DOOR REMOVAL
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 two adjustment screws 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 Ladera™ fireplace.
• The fireplace cannot be operated without a door. Consult your dealer
if you need a replacement door.
• 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
Gasket
Adjustment
Screw
Figure 4
6
Door Installation
Figure 5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
GLASS CARE
Glass Replacement
The glass used for the Ladera™ fireplace is a
high temperature ceramic glass (1,400° F / 760°
C). If the glass breaks, it must be replaced with
an identical ceramic glass. Tempered glass or
ordinary glass will not withstand the high temperatures of the Ladera fireplace. Replacement
glass should be purchased from a Lennox Hearth
Products dealer (see “Replacement Parts”,
). DO NOT OPERATE THE UNIT WITH
Page 24
CRACKED OR BROKEN GLASS.
Glass Cleaning
The Ladera fireplace is designed to keep the
glass clean under normal operating conditions.
If the Ladera fireplace is operated continuously
with the combustion air controls closed, the
glass will tend to get dirty unless the fuel, firebox
and glass are maintained at hot temperatures
(see “Refueling For Best Performance”). To
clean the glass, there are a number of specially
designed cleaners. Your authorized Lennox
Hearth Products dealer can recommend a
suitable cleaner which is available in your area.
Regular household glass cleaners will not clean
creosote. Do not use abrasives such as steel
pads, steel wool or oven cleaner as they will
scratch the glass.
DO NOT USE CHEMICAL GLASS CLEANERS
ON PAINTED SURFACES AS IT MAY CAUSE
THE PAINT TO PEEL.
CAUTION : DO NOT ALLOW WINDOW CLEANER
TO GET IN CONTACT WITH DOOR GASKET OR
PAINT ON FACADE OR DOOR. ONCE CLOSED,
CONTACT OF GLASS CLEANER WITH THE
FIREPLACE FACADE CAN PROVOKE PAINT
PEELING OFF.
Gasket Replacement
Remove the door from the unit (see Page 6)
and lay it on a clean unabrasive surface. To
replace the gasket, first remove all of the old
gasket and gasket cement. Make sure that the
surface is totally clean before applying new
cement (a high temperature silicone caulking
rated at 500° F [260° C], is suitable) or adhesion
problems may result. Apply gasket cement to
the gasket channel and install the new gasket.
This replacement part is available from your
Lennox Hearth Products dealer in the following
dimensions:
Gasket Length Dimensions Part No.
69
Around
Glass
On Door
Frame
(1753)
(1854)
1 x 3/16
(25 x 4.8)
73
3/4 dia
(19.5)
PR-SR1685H
PR-SR1823O
Table 1 Inches (millimeters)
FIREPLACE INSTALLATION
Locating The Ladera Fireplace
The best location to install your fireplace is
determined by considering the location of
windows, doors, and the traffic flow in the room
where the fireplace is located, allowing space
in front of the unit for the hearth extension and
the mantel, and taking into consideration the
location of the hot air ducts (optional), outside
air kit (optional) and chimney.
If possible, you should choose a location where
the chimney will pass through the house without
cutting floor or roof joists (see fireplace dimensions Page 9).
Usually, no additional floor support is needed
for the fireplace. The adequacy of the floor
can be checked by first estimating the weight
of the fireplace system. Weights are given on
Page 24
. Next, measure the area occupied by
the fireplace which is normally 36” x 24-1/2”
(914mm x 622mm). Note the floor construction and consult your local building code to
determine if additional support is needed.
The Ladera fireplace may be installed directly
on the floor or on a raised base (for proper
guidelines, refer to “Hearth Extension Requirements”) and a minimum of 6’8” (2 m) measured
from the base of the appliance to the ceiling
is required.
When selecting the location, the chimney outlet
position and the direction of the wind are important factor affecting the chimney performance.
To allow a maximum draft and to reduce wind
turbulence, the chimney must:
• Penetrate the highest part of the roof.
• Be installed as far as possible of roof offsets,
trees or any other obstructions that may
cause wind turbulence and back drafts in
the chimney.
• The least amount of offsets (elbows) pos
sible.
-
Outside Air Intake
Facing the Wind
Figure 6
Marginal Location
Wind Direction
Location
Not
Recommended
Location Recommended
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Location
Not
Recommended
7
Optional Cast Facade installation
Install the Facade per instructions provided in
Facade Kit (ordered separately - see Page 22).
Framing, Facing And Mantel
The construction of the framing, facing, and
mantel must be in accordance with the standards and the following illustrations (Figures
):
8 and 9
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.
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
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
-
Hearth Extension Requirements
WARNING: THE HEARTH EXTENSION IS TO BE INSTALLED ONLY
AS ILLUSTRATED.
Safety Metal Strip
Hearth Extension
Non-Combustible
Finish Material
1/2”
13mm
Floor
Fireplace
Platform
2”
u
Hearth Extension Requirements
The Ladera™ 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 at least a 1/2 inch of
non-combustible material (tile, marble, stone,
etc). See Figure 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.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
8
Area where wood mantel
can be installed
45 Deg.
32-3/4”
(832mm)
Min.
17” Min.
(432mm)
Figure 7B
39”
(990mm)
Min.
Mantel
(457mm)
Min.
18”
Hearth
Extension
4”
(102mm)
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).
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