INSTALLATION AND
OPERATION INSTRUCTIONS
CAMBRIA™
TM
Wood-Burning Fireplace
P/N 850,057M REV. E 06/2010
MODEL
CAMBRIA
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
or operating the fireplace.
CAUTION: Do not alter or modify the fireplace or its components under
any circumstances. Any modification or alteration of the fireplace
system,includingbutnotlimitedtothefireplace,chimneycomponents
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
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 appli-
ance. Severe burns may result.
• Carefully supervise children in the
same room as appliance.
• The fireplace cannot be operated without a door
or firescreen. Consult your dealer to select the
correct replacement door or firescreen.
• 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.
• If small children are present in the home, it is
recommended that this appliance be fitted with
a firescreen kit.
• Install the fireplace only as described in these
instructions.
Listed to standards:
ULC-S610 and UL-127
Report No. 3092554
PICAMBRIA-A REV. 5 JUNE 2010
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OPTIONAL EqUIPMENT
CONGRATULATIONS!
• 5” flexible venting system (central forced
air kit) (see section 3.5.2)
When you purchased your new fireplace, you joined the ranks of thousands of individuals
whose answer to their home heating needs reflects their concern for aesthetics, efficiency
and our environment. We extend our continued support to help you achieve the maximum
benefit and enjoyment available from your new fireplace.
• UZY5 blower. The blower installation re-
quiresthatanelectricalconnectionofa120v
electrical box located outside the fireplace
be made prior to moving the fireplace in its
finalposition.(seeOptionalFireplaceBlower
on Page 13)
Thank you for selecting a Lennox Hearth Products fireplace as the answer to your home
supplemental heating needs.
• Gravity venting system (see Central Forced
Air Kit on Page 15)
THE FIREPLACE
TABLE OF CONTENTS
OPERATING THE FIREPLACE
Fuel
INTRODUCTION
Safety Rules......................................Page
Introduction ......................................Page
Parts Required .................................Page
Optional Equipment...........................Page
Operating The Fireplace ....................Page
Fuel...................................................Page
Combustion Control .........................Page
Refueling For Best Performance .......Page
Smoking – Causes And
Troubleshooting ..........................Page
Important Cautions ...........................Page
Maintaining Your Fireplace ...............Page
Creosote............................................Page
Chimney Maintenance.......................Page
Dealing With A Chimney Fire.............Page
Disposing of Ashes...........................Page
Door Finish Casing Care....................Page
Refractory Replacement....................Page
Door Installation ...............................Page
Door Adjustment...............................Page
Glass Care.........................................Page
Gasket Replacement ........................Page
Andirons ...........................................Page
Fireplace Installation ........................Page
Locating The Fireplace ......................Page
Framing, Facing And Mantel..............Page 10
Hearth Extension Requirements .......Page 10
Cold Climate Installations..................Page 10
Framing Dimensions.........................Page 11
Insulated Chase Construction ...........Page 12
Nailing Flanges..................................Page 12
Mantel and Facing.............................Page 12
Optional Fireplace Blower..................Page 13
Hot Air Ducting Installation ..............Page 14
Gravity Kit .........................................Page 14
Outside Air Kit ..................................Page 16
Chimney System...............................Page 17
Offset Chimney Installation...............Page 20
Angled Wall Radiation Shield ............Page 22
Chimney Support Installation............Page 22
Chimney Chase And
Multiple Terminations......................Page 22
Installation Accessories ....................Page 23
Chimney Components Lists ..............Page 23
Replacement Parts............................Page 25
Specifications....................................Page 25
Clearances ........................................Page 25
Product Reference Information.........Page 26
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The Cambria™ wood-burning fireplace is a
mid-efficient, heat radiating fireplace. You will
receive a lifetime of comfort and enjoyment
from your fireplace provided it is installed,
maintained and operated properly.
USE SOLID NATURAL WOOD FUEL ONLY. The
Cambria fireplace isdesignedtoworkbestwhen
fueled with seasoned cordwood. 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
refuelling. 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.
The required drying time will vary depending on
the climate. Wood that is packed tight together
will take longer to dry. Seasoned wood is darker
incolorthanwetwoodandwillhavevisiblecracks
in the grain on the ends. Excessively wet wood
will be difficult to burn and will result in lower ef-
ficiency,increasedcreosotinganddepositsonthe
glass and in the chimney. Excessively dry wood
will burn well but will also have higher emissions
and shorter burning time.
• Please read these instructions and retain
this manual for future reference.
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• Before beginning the fireplace installation,
consult the local authorities to obtain your
buildingpermitandcheckyourlocalbuilding
codes. Installthefireplaceonlyasdescribed
in these instructions and using only Lennox
Hearth Products components.
• These appliances are not approved for
Manufactured Home installations.
• When planning a fireplace installation the
following information must be determined
before beginning.
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,Christmastreebranchesorbuilding
constructionmaterials. Intensefiringwiththese
materials may overheat the fireplace, causing
damage to the unit, a fire or even possibly ignit-
ing a chimney fire if the chimney is creosoted.
Burningunapprovedfuel,resultinginexcessive
pollutantsbeingemitted,maybeprohibitedand
subjecttoafineorotherpenaltybytheauthority
having jurisdiction in your area.
1. Where the fireplace is to be installed.
2. The configuration of the chimney.
3. Optionalcomponentsinstallation(fan,
hot air ducting, etc).
4. Electrical wiring.
5. Framing and finish details.
PARTS REqUIRED
• Fireplace model: Cambria
• 10”diameterchimney-ModelSecureTemp
ASHT+, or Nova TempHT6103+ insulated stainless
steel chimney or 10” (AC) air-cooled manu-
facturedbySecurityChimneysInternational
only, including:
Processed firelogs can be used. Use only fire-
logsthathavebeenevaluatedfortheapplication
of fireplace and refer to firelog warnings and
caution markings on packaging prior to use.
- Chimney lengths
- Elbows (where necessary)
- Associated components as per these
installation instructions
• Outside air kit (included)
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First Fires
Beforeusingthefireplacemakesuretoremove
the plastic wrapping on the door. Remove all
remaining glue with mild soap. Make sure the
doorsareproperlyadjusted,thusavoidingcolor
change to finish due to overheat.
Thefirst5or6firesshouldbesmallfiresofshort
duration(about30to60minutes). Thiswillhelp
cure the refractory bricks. During the first few
fires of this appliance there may be some odor
and smoke due to the curing of the paint, dust
accumulation and burning off of lubricants used
in the manufacturing process. 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.
Closed
Open
Chimney
Damper
(A)
Figure 2 - Accelerated Combustion
Open
Back
Medium Combustion
Closed
Front
This is the recommended mode of operating
the Cambria 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 .The precise setting will depend on
manyfactors,includingchimneylengthandthe
moisture content of the wood.
HEAT OUTPUT
The Cambria™ fireplace is a mid-efficiency
fireplace. In spite of the heat that the Cambria
fireplace can deliver, it should not replace the
mainsourceofheatinyourhome. Thisfireplace
will bring extra warmth and ambiance to your
homebydistributingitsheatasdescribedfurther
in the manual.
For instance, a long chimney will necessitate
closing the damper more. To obtain the proper
combustion,closethedampercompletely,then
open it about 1/4” to 1/2”. Three medium size
piecesofcordwoodburningonabedofhotcoals
will burn about 1-2 hours. Softwoods may be
burned using this method but the combustion
time will be substantially reduced.
FORMAXIMUMHEATOUTPUT,WESTRONGLY
RECOMMENDTHEINSTALLATIONOFHOTAIR
DUCTING SYSTEM (See Page 14).
Combustion Control and Chimney
Damper
The Cambria fireplace includes a combustion
air control that sets the flow of air entering
the firebox and control the fire. The fireplace
also includes a chimney damper that is not
a combustion control. The chimney damper
must always be in fully open position when
the fireplace is used and should be closed only
when all ashes are cold.
Closed
Open
FORMAXIMUMHEATOUTPUT,WESTRONGLY
RECOMMEND THE INSTALLATION OF THE
OPTIONAL HOT AIR DUCTING SYSTEM.
Figure 1
Thechimneydamperiscontrolledbythehandle
insidethefirebox(seeFigure1-A).Itisinclosed
position when the handle is visible (front) and
in the open position when not visible (pushed
back). Thecombustionairdamperiscontrolled
bythelowerhandle(seeFigure1-B).Thecontrol
can be moved from open position at left all the
way to the close position at right.
Accelerated Combustion
The maximum heat output for the Cambria
fireplace is achieved by burning with the door
closed and the combustion air opened. How-
ever, it will be necessary to reload with wood
every hour. This is the least efficient method
of burning the Cambria fireplace. Use caution
when burning with the combustion air control
wideopen. Onlyburncordwoodinthismanner.
Small dry pieces of softwood will burn very
intensely using this method and may damage
the firebox.
Closed
Open
This air combustion control should be in the
closed position when the fireplace is not in
operation. This will minimize air infiltration.
The combustion air control should be opened
before opening the doors to minimize the
possibility of back draft coming into the
room (see Figure 1-A). Also see Smoking
- Causes and Troubleshooting for more details
(on Page 5).
Figure 3 - Medium Combustion
WARNING: The air combustion control
must be in the open position if the fire-
place is operated with the doors open.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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Building a Fire
SMOKING –
GAS LOG INSTALLATION
CAUSES AND TROUBLESHOOTING
A) To start a fire, place several crumpled up
ballsofnewspaperinthefirebox. Placesmall
dry pieces of kindling on top of the paper,
criss-crossing the kindling so that there are
air spaces in between. The kindling should
be placed at the center of the firebox so as
to allow for sufficient air circulation.
B) Open the dampers and light the newspaper.
Leave the doors partially opened (1 to 2
inches) to facilitate the start-up.
C) Once kindling fire is well established, cord-
wood can be added. Close the doors and
leave the combustion air control open in
accelerated combustion position.
D) When the fire burns well set the primary
control to the desired burn level.
Thisfireplaceisdesignedtoallowtheinstallation
of a gas burner. In such a case, the installation
mustconformwiththeNationalGasCodeANSI
Z223.1 and Z21.60. Warning: When using a
gasburner,itismandatorytokeepthechimney
outside air register opened.
To reduce the likelihood of smoke coming
into the room when opening the door, set the
combustion air controls to the left (“Acceler-
ated Combustion”) 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. If
the fireplace continues to smoke it is probably
for one of the following reasons:
This fireplace has provision for the installation
ofagaspipeandisintendedonlyforconnection
to a decorative gas appliance incorporating an
automatic shutoff device and complying with
ANSI Z21.60-M96/CGA 2.26-M96, Standard
for Decorative Gas Appliances for Installation
in Solid-Fuel Burning Fireplaces (reference
Clause 4.1.3 T).
A. The doors are partially opened
When you open the doors, open them com-
pletely.
B. Negative pressure in the house
A fire needs air to burn. This air must be
replaced through the outside air duct (see
Outside Air on Page 16). When operating
theCambriafireplace,openanearbywindow
temporarily to check if there is adequate
replacement air supply.
C. Fans operating (e.g.: range hood)
Fans such as range hoods or bath fans draw
airoutofthehouseandmayactuallycausea
negative pressure in the house. Turn off all
fansandopenanearbywindowtodetermine
if this is the cause of the problem.
D. Wet wood
1. Remove the 1 inch knock-out on the right
side of the fireplace and on the right side
refractory.
2. Drill a one inch hole in the hearth right side
coaxial to the refractory opening.
3. Assemble a rigid 3/8” N.P.T. iron pipe with
two90ºelbows. Makesuretohave5-11/16”
clearancebetweenthetwopipes(seeFigure
4).
4. Throughthehearthbottomorbackopenings
insert the mounted pipe through the side
of the firebox and the firebrick. Make sure
the top elbow is as close as possible to the
hearth to keep a minimum clearance to the
retractable door.
5. Insert a pipe through the 1 inch exterior
knock-out and fix it to the 90º elbow already
in place.
The unit will burn best with 2-3 pieces of
cordwood 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 cordwood well ignited.
WARNING: The Cambria™ fireplace was de-
signed to allow a spectacular view of the fire.
The Cambria fireplace should never be filled
in excess (five big logs or more). Excessive
fire could damage the fireplace’s hearth and
refractory brick and void the warranty.
Wetortarredwoodwillsmoulderandsmoke
instead of burning properly. Your dealer can
help you determine if you have properly
seasoned wood for burning.
E. Dirty or blocked chimney
REFUELING FOR BEST PERFORMANCE
Check to make sure the chimney is clear and
clean. If dirty call a certified chimney sweep
or use a properly sized chimney brush to
clean.
Note: In some regions, the use of a flexible gas
pipe is allowed. Consult your local authority.
To reload the Cambria fireplace:
A) Completelyopenthecombustionair control
(see Figure 2).
F. Chimney not long enough
The minimum chimney height is 15 feet (4.6
m) not including the fireplace height. The
chimney must extend at least 3 feet (915
mm) above its point of contact with the roof
and at least 2 feet (610 mm) higher than any
roof or wall within 10 feet (3 m) of it. When
installedwithoffsets,theminimumchimney
height is 18 feet (5.5 m). Additional height
will increase draft and will decrease the
tendency to smoke.
B) Open the doors about 1” and wait 5 seconds
until the airflow has stabilized. Then open
the doors completely, put the logs in and
close the doors.
C) Setthecombustionaircontroltothedesired
burn level.
Notes:
G. Poor chimney draft
• For spectacular fire and optimization of
the fireplace efficiency, we recommend
that the wood load be placed as far back
as possible.
• Itmaybenecessarytoturnoffanyblower(s)
inoperationduringtherefuelingprocessin
order to minimise smoking in the room. It
is recommended to wait 15 to 30 minutes
before turning the blower(s) back on to
ensure successful rekindling.
5-11/16”
(145mm)
With no fire, there should be sufficient draft
toexhaustcigarettesmokeintroducedunder
the baffle. Chimneys installed against an
outside wall without protection may gener-
ate back draft problems which will cause
start-up problems. To prevent this, open
a nearby window; roll up a piece of paper,
light it and hold it in the upper part of the
firebox to warm up the chimney. Wait until
the draft is sufficient, then start the fire.
H. Blower for central forced air kit
Make sure that the blower is at the “off”
position when you open the fireplace door
for reloading.
Figure 4
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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A. Initially inspect the chimney system weekly.
From this, you will learn how often it will be
necessary to clean your chimney.
IMPORTANT CAUTIONS
Refractory Brick Replacement
(refer to Figure 6)
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.
B. Have your chimney cleaned by a qualified
chimney sweep. If you wish to clean it your-
self, we recommend using a stiff plastic or
non-metallicbrush. Ifametalbrushisused,
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.
The intense heat of the fire will normally cause
hairline cracks in the refractory brick. These
cracks can be minimized by proper curing as
described in First Fires on Page 4. They will
not normally diminish the effectiveness of the
refractory brick. If large cracks develop, then
the refractory should be replaced. To replace
the refractory bricks, follow these steps:
C. Do not burn coal. The sulphur in coal will
corrode the firebox and chimney.
D. Keep combustible materials at least 48”
(1.2m)awayfromthefrontofthefireplace
opening.
E. Never leave children unattended when
there is a fire burning in the fireplace.
F. Do not use the CAMBRIA as an incinerator
to burn paper, cardboard or construction
material such as pressed wood, plywood
or lumber. Use only untreated wood. Wood
protectors, metallic paper, coal, plastic,
waste, sulphur and/or oil will damage the
fireplace.
G. Donotburndriftwoodwhichhasbeeninthe
ocean or salt water. The salt will corrode
the firebox and chimney.
H. Do not burn wood in the area in front of the
grate.
I. Do not allow the wood to smoulder or burn
without flame, since this will produce
excessive creosote in the unit as well as
increased particulate emissions.
Warning:Thechimneydampermustbeopened
when sweeping the chimney to avoid ash and
creosote accumulation in the fireplaces air
circulation area.
1. Remove the front refractory bricks
2. Remove the andirons
3. Remove the side refractory supports
4. Remove the side refractory bricks
5. Remove the back refractory brick
6. Remove the bottom refractory brick
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. Using gloves, firmly grip the
upper portion of the rain cap. Turn the cap
and lift it off the chimney.
To install the new refractory bricks, follow the
above steps in reverse.
Dealing With a Chimney Fire
DOOR FRAME FINISH CARE
Regular chimney maintenance and inspection
canpreventchimneyfires. Ifyouhaveachimney
fire, follow these steps:
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 frame’s finish.
1. IMPORTANT: Close the fireplace door and
the combustion air controls; this will stifle
the fire.
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. 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, your dealer,
or a fire department inspector.
Door Installation
(refer to Figure 5)
The doors on the Cambria fireplace are factory
installed. To remove the doors, remove the
finishing trim, then simply pull them up from
the hinges. 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.
(See Figure 8, #1)
MAINTAINING YOUR 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
an extremely hot fire.
DISPOSING OF ASHES
Note:Forbetterperformances,werecommend
leaving 1/2 inch of ashes in the firebox.
Remove ashes only when the fire is out and
the ashes are cold (24 to 48 hours after the
fire is out). Do not leave the ashes in the house
as they give off carbon monoxide and other
toxic gases.
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.
WARNING
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.
DisposalofAshes: Ashesshould
be placed in a metal container
withatightfittinglid. Theclosed
container of ashes should be
placedonanon-combustiblefloor
or on the ground well away from
allcombustiblematerials,pend-
ing final disposal. If the ashes
are disposed of by burial in soil
or otherwise locally dispersed,
they should be retained in the
closedcontaineruntilallcinders
have thoroughly cooled.
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:
Figure 5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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1. Adjustment Screw (adjusts
tightness of door seal)
2. Slider Stoppers
Figure 8
1. Front Refractory Brick
2. Andirons
3. Side Refractory Supports
4. Side Refractory Bricks
5. Back Refractory Brick
6. Bottom Refractory
Door Lock
Adjustment
Screws
Tighten
Figure 6
The gaskets’ air-tightness can be adjusted us-
ing the adjustment screw located on the slider
stoppers (see Figure 8). Turning the screws
clockwisewillshortenthetravelofthesliderand
increase the pressure on the door side gaskets.
This may lead to the doors being harder to lock,
so a good adjustment must be found between
a good gasket seal and easy door lock (see
Figure 8, balloon #1).
WARNINGS
Loosen
Figure 9
• Use only a Lennox Hearth
Products glass doors, spe-
cifically designed for the
Cambria fireplace.
• The fireplace cannot be oper-
atedwithoutdoororfirescreen.
Consult your dealer to select
the correct replacement door
or firescreen.
• 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.
Door Opening Adjustment
The doors opening angle can be adjusted. This
allowsthedoorstoslideinthefireplacewithout
interference or friction with the finishing fac-
ing, which could damage the paint. The screws
located under the bottom hinges (Figure 11)
are used as door opening stops. Tightening or
looseningthesescrewswillkeepthedoorhandle
fromhittingthefinishingfacingandwon’tallow
friction between door gasket and hearth when
the door is fully pushed in the fireplace.
Thedoorlockcanalsobeadjusted. Removethe
frontrefractorybrickandloosenthetwoscrews
in the middle front of the firebox bottom. Push
or pull on the handle of the door lock. Pushing
thehandlewilltightenthedoorsealinthecenter
of the fireplace (see Figure 9).
Bearing Maintenance
The doors are assembled on retractable slid-
ers using roller bearings for easy movement.
Cambria fireplace has been designed to ensure
that bearing maintenance is easy. Remove
the decorative facing by unscrewing the four
decorative caps and the four screws holding
the facing. Remove the doors by lifting them up
from the female hinges (see Figure 5). Remove
the slider stoppers (see Figure 8) and take the
slider bearing assembly out of the fireplace.
Unscrew the nuts to change the bearings
(see Figure 10). Original bearing contains no
grease to resist heat. Adding grease or chang-
ing bearings with greased bearing may cause
a malfunction of the slider. Please use Lennox
Hearth Products replacement parts only (see
Page 25 for part numbers).
DOOR ADJUSTMENT
The doors are factory adjusted for proper air
tightnessandfit.Theymayneedtobereadjusted
if the alignment has shifted in freight.
Door Hinges
Door
To readjust the door side to side position, un-
screw the fireplace hinges or the door hinges.
Move the doors side to side until the top of the
two doors are aligned (Figure 7).
Figure 7
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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Gasket Replacement
GLASS CARE
Remove the doors from the unit (see Door
Installation on Page 6) and lay them on a clean
nonabrasivesurface.Toreplacethegasket,first
remove all of the old gasket and gasket cement.
Makesurethatthesurfaceistotallycleanbefore
applying new cement (a high temperature sili-
conecaulkingratedat500°F/260°C,issuitable)
oradhesionproblemsmayresult. Applygasket
cement to the gasket channel and install the
new gasket. This replacement part is available
fromyourLennoxHearthProductsdealerinthe
dimensions shown in Table 1.
Glass Replacement
The glass used for the Cambria™ fireplace is
a high temperature ceramic glass (1400°F). If
the glass breaks or cracks, it must be replaced
with an identical ceramic glass. Tempered
glass or ordinary glass will not withstand the
high temperatures of the Cambria fireplace.
Replacement glass should be purchased from
aLennoxHearthProductsdealer(see“Replace-
ment Parts” on Page 25).
Unscrew the
nuts to change
the bearings
Donotoperatetheunitwithcrackedorbroken
glass.
Gasket
Part #
Dimensions qty
Around
the door
2
PR-SR1823N
58-3/4”
5/8” dia.
Glass Cleaning
The Cambria fireplace is designed to keep the
glass clean under normal operating condi-
tions. If the Cambria 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. To clean the glass, there
are a number of specially designed cleaners
to remove creosote. Your authorized Lennox
Hearth Products dealer can recommend a suit-
ablecleaner. Regularhouseholdglasscleaners
will not clean creosote. Do not use abrasives
such as steel pads, steel wool or oven cleaner
as they will scratch the glass.
Table 1
Andirons
The Cambria fireplace is equipped with and-
irons designed to keep logs from falling into
the door. It must be replaced only by Lennox
Hearth Products andirons available from your
dealer. No other andirons, log retainer or log
support is sold or recommended by Lennox
Hearth Products.
Figure 10
DO NOT USE CHEMICAL GLASS CLEANERS
ON PAINTED SURFACES AS IT MAY CAUSE
THE PAINT TO PEEL.
CAUTION:DONOTALLOWWINDOWCLEANER
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.
Door Angle (hang)
Adjustment Screw
Figure 11
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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 25. Next, measure the area occupied by
the fireplace. Note the floor construction and
consult your local building code to determine
if additional support is needed.
Whenselectingthelocation, thechimneyoutlet
positionandthedirectionofthewindareimpor-
tant factor affecting the chimney performance.
To allow a maximum draft and to reduce wind
turbulence, the chimney must:
FIREPLACE INSTALLATION
Locating The Fireplace
The best location to install your fireplace is
determined by considering the location of
windows,doors,andthetrafficflowintheroom
wherethefireplaceislocated, allowingspacein
frontoftheunitforthehearthextensionandthe
mantel, and taking into consideration the loca-
tion of the hot air ducts (optional), outside air
kitandchimney. Ifpossible,youshouldchoose
a location where the chimney will pass through
the house without cutting floor or roof joists
(see fireplace dimensions on Page 11).
• Penetrate the highest part of the roof.
• Beinstalledasfaraspossibleofroofoffsets,
trees or any other obstructions that may
cause wind turbulence and back drafts in
the chimney.
• The least amount of offsets (elbows) pos-
sible.
TheCambria™fireplacemaybeinstalleddirectly
onthefloororonaraisedbasebutaminimumof
7 feet 6 inches (2.3 m) measured from the base
of the appliance to the ceiling is required.
Location Recommended
Marginal Location
Wind Direction
Location
Not
Recommended
Location
Not
Recommended
Outside Air Intake
Facing the Wind
Figure 12
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Framing, Facing And Mantel
The construction of the framing, facing, and
mantel must be in accordance with the stan-
dards and the following illustrations (Figures
15 through 20):
Tile or
Marble
Fireplace
Cement
Board
Fireplace
A. Frame the fireplace using 2” x 3” or heavier
lumber.
Free Space u
Tile or Marble
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 7 feet 6 inches (2286
mm) measured from the base of the
appliance.
Minimum 1/2”
Cement Board
v
2 x 4 Framing
v
C. Frame the fireplace with vertical studs at the
sides of the fireplace running from floor to
ceiling(seeFigure15).Ifcombustiblefacing
is to be used, position the studs back, from
the front edge of the fireplace 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:
Elevated Fireplaces
WARNINGS:
Fireplace
THE HEARTH EXTENSION IS TO BE IN-
STALLED ONLY AS ILLUSTRATED.
• Place 2” x 3” or 2” x 4” headers, only
along the upper part of the front, side
and back faces. Do not put wood or any
combustible material within the area
above the fireplace except on the front
facing.
uDO NOT PACK REqUIRED AIR
SPACES WITH INSULATION OR
OTHER MATERIALS.
Platform
vTHE CRACK BETWEEN THE FIRE-
PLACEANDTHEHEARTHEXTENSION
MUST BE SEALED WITH A NON-
COMBUSTIBLE MATERIAL SUCH
AS A NON-COMBUSTIBLE SEALING
STRIP OR SAND CEMENT GROUT IN
THE AREA SPECIFIED ABOVE.
• Placeheadersonlyasrequiredtosupport
the facing and mantel.
2”
D. WARNING: The fireplace must not be
in contact with any insulation or loose
filling material. Cover the insulation
with drywall panels or any other rigid
material around the fireplace.
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”.
Hearth Extension Requirements - The Cam-
bria™ fireplace may be installed directly on a
combustible floor; however, the combustible
floor in front of the fireplace must be covered
with a 1/2 inch (13 mm) of non-combustible
support material (cement board, cement block
or other) before applying the finish material
(tile, marble, stone, etc.) (see Figures 13 and
14).
Hearth extension of an elevated fireplace must respect the same minimal
dimensions than a fireplace installed directly on the floor.
Figure 13 - Hearth Extension Requirements
WARNING: It is important not to cover the
air ventilation opening below the facade
trim. (free space - Figure 13).
Combustible material allowed in
the airspace above this area.
COLD CLIMATE INSTALLATIONS
Climates where temperatures will fall below
32° F (0° C).
Mantel
12”
MAX
The heating performance of the appliance will
varydependinguponthelevelofinsulation,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. Also, theoutsideairinletductshould
bewrappedwithnoncombustibleinsulationto
minimize the formation of condensation. Do
not place insulation materials directly against
thechimneysections. Werecommendthatyou
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
59” Min.
24”
45°
Hearth
Extension
4”
18”
33-3/4”
Non-Combustible
Material
Figure 14 - Hearth Extension and Clearances
0°F (-18°C)
.
10
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Framing Dimensions - Model Cambria™
2” x 3”
Min.
Do not fill the
space above the
fireplace with
any material
CORNER
INSTALLATION
32-7/8”
(835mm)
D
F
J
27-7/8”
E
7’ 6”
(2.3m)
Min.
B
PARALLEL / CHASE INSTALLATION
Back Wall of Chase/Enclosure
Including Finising Materials if any
OUTSIDE CHASE
C
G
A
* Zero Clearance
From Back
Spacer to Wall
G
Plywood 1/2”
Rough Framing Face
(unfinished shown)
A
Rough Framing Face (Unfinished Shown)
46-1/2”
24”
1”
FRAMING DIMENSIONS
Fireplace Opening Width
A
B
C
D
E
F
G
J
48-3/4’’
59-3/8’’
48-1/2’’
23-1/4’’
102-1/4”
51-1/8”
28-7/8’’
72-5/16’’
1238 mm
1508 mm
1232 mm
591 mm
12-3/8”
17-7/8”
27-7/8”
2597 mm
1299 mm
733 mm
1-3/8”
1837 mm
Notes
57-1/8”
(1451mm)
DuetoLennoxHearthProductsongoingcommitment
toquality,allspecifications,ratingsanddimensions
are subject to change without notice.
35-7/8”*
(911mm)
59-1/8”
(1502mm)
Allframingdimensionscalculatedfor1/2"drywallat
the fireplace face. If sheathing the chase or finish-
ing with other thickness materials, calculations will
need to be made.
28-1/4”
(718mm)
Thefireplacemustnotbeincontactwithanyinsulation
or loose filling material. Cover the insulation with
Drywall panels around the fireplace.
27-7/8”
(708mm)
* Dimensions to tiling
flange behind the trim.
2-5/8”*
(67mm)
36-1/4”*
(921mm)
46-1/2”
(1181mm)
Figure 15 - Framing Dimensions
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Insulated Chase Construction
Storm Collar
Flashing
Roof Support
Attic Radiation
Shield
Floor
Ceiling
Wall
NOTE:Itisrecommendedthatthechasewalls
andfloorbeinsulatedinthesamemanner,
usingthesameinsulation,astherestofthe
building, below the attic.
• Must have the same firestopping
resistance as adjacent wall.
• Must have the same insulation as
adjacent ceiling.
• Follow local rules regarding framing
construction.
Firestop
7’ 6”
(2.3 m)
Min.
7’ 10”
(2.4 m)
Min.
SEE NOTE
8’
(2.4 m)
Level
Solid
Drywall or Any Rigid
Material
Continuous
Surface
Outside
Base
Insulation
(Thermal Barrier)
1/2” Plywood
2” x 4”
Figure 16
Nailing Flanges
FACING
Fireplace Frame Section
Four nailing flanges are provided to secure the
fireplace to the floor (see figure below). Bend
the nailing flanges down so that each flange is
flush with the floor, then using nails or screws,
secure the fireplace to the floor (2 places each
side). The heads of the screws or nails must
be large enough to completely cover the holes
in the nailing flanges.
(Top View)
IMPORTANT
The facade must be removable
once installed. The facade is
designed to overlap any facing
material installed on the front of
the fireplace. If thicker material
is installed, use the facade as a
templateandmakesureitcanbe
easily removed for servicing.
3
1
4
5
Fireplace
Side
2
6
3
7
1. Combustiblematerialmustbeinstalledflush
with the fireplace. It may not project in front
of and on the fireplace (i.e. the steel facade
of the fireplace) (see Figure 19).
2. Non-combustible materials such as brick,
stone or ceramic tile may project in front
of and onto the fireplace facing (see Figure
20).
1
4
Unbend to floor
and nail/screw
2
Nailing Flange
(2 places each side)
1. Fireplace
2. Front of fireplace
3. Wood frame (2” x 3” min)
4. Drywall
MANTEL AND FACING
5. Tiles
6. Rock board or other
7. Brick
The mantel must be installed at least 59”
(1500 mm) above the base of the fireplace
(see Figure 18).
Figure 17
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To install the blower,
Mantel and Facing
(Side View)
Flameproof Facing
Drywall
1- Remove the refractory bricks and the and-
iron.
2” X 3” Min.
Spacer
Drywall
Mantel
59”
2- Removethemetalplatescoveringthebottom
and back of the hearth firebox.
2” x 3” Min.
}
Spacer
3- Disconnect the main electric cable from the
blowers by unplugging its two quick connec-
tors.
Non-Combustible Panel Only
Non-Combustible
Panel Only
u
v
4- Remove the knock-out in the front right side
of the fireplace outer casing.
Metal Mesh Screwed in
Board and Fireplace
u
v
Flameproof Facing
5- Install a metallic wire protector and slide the
blowermainelectricalcable fromtheoutside
to the inside of the unit.
6- Install the two blowers in the back of the
fireplace through the holes in the back.
Warning: Make sure there are no contact
between the blowers and the door slider.
Figure 20
Figure 18
7- Reconnect the main cable quick connectors
and stick (magnet) the heat activate switch
under the right side of the firebox. Using
aluminum tape, make sure no wiring touch
the firebox by taping it to the bottom of the
fireplace panel.
Optional Fireplace Blower (UZY5)
Only non-combustible mate-
rial should be superposed or
projecting over the front of the
fireplace.
A heat activated blower is sold as an option. It is
designedtobelocatedinthebackofthefireplace
and increase the air flow around the firebox. It
uses regular 120V and must be connected to the
main electrical circuit by a qualified electrician.
An electrical box must be installed outside the
fireplace.
8- Install all plates, bricks and andiron.
9- Connect the blower plug into the electrical
box located outside the fireplace.
59”
Min.
WARNING: Because of the fireplace size and
obstructive air venting, we don’t recommend
theinstallationoftheblowerunlessthegravity
ducting is installed on the fireplace.
Ifyouwishtoadjusttheblowerspeed,anoptional
variable speed control (VRUW) can be installed
in line with the wiring. Again, use a qualified
electrician for installation.
Figure 19
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When installing the double outlet system, the hot air outlets can be installed in the same room as
the fireplace, or one or both of the outlets can be installed in adjacent or upper rooms. Installing the
ducts at different elevations will tend to exhaust more heat out of the higher outlet (Figure 22).
HOT AIR DUCTING INSTALLATION
(OPTIONAL)
Differenthotairductingsystemscanbeinstalled
with the Cambria™ fireplace:
• Gravity kit
• Forced air kit
The gravity kit is used when the rooms are on
same level or floor as the fireplace or on an up-
per level or floor. If the heat to be distributed
is on a lower level or floor, then the forced
air kit MUST be used.
Outlet Grill
WARNING: The outlet grills
should not be installed
facing upward through a
floor. Danger of burns can
result if grills in floor are
stepped on.
10’ Max.
Gravity Kit
Double hot air outlet including:
(See Figure 21)
13” x 13”
• 2 ea. telescopic lengths, 8” I.D.
• 2 ea. 90º elbows, 8” I.D.
• 2 ea. hot air outlet kits (grill and frames)
• 2 ea. adaptors
10’ Max.
See components list on Page 23.
Maintain at least 6-1/2”
(160mm)clearancefrom
the outlet grill framing to
a combustible ceiling,
side wall or mantel.
Only the blower available with the fireplace can
be used with the gravity kit.
Frame
Grill
Figure 22
Rain Cap
Flashing
Collar
WARNING: Both pipes of
the double hot air outlet
must be installed. Any oth-
er installation may cause
fire and void warranty.
Flashing
Roof Support
Firestop
Attic
Radiation
Shield
68” Min.
(1727 mm)
Figure 21
u
59” Min.
(1499mm)
The safety rules for hot air ducting gravity kit
installations are the following:
Minimum height* 68” (1727 mm)
Maximum length - See Figure 22
Non-Combustible
Flameproof
Facing
* The height of the louver must be measured
from the base of the Cambria fireplace to
the middle point of the louver.
Combustiblesarenotallowedbelowtopspacers
above the fireplace. Facing in front of fireplace
must be non-combustible below this area.
u
WARNING: Both pipe of the double hot air
outlet must be installed. Any other installa-
tion can cause greater risk of fire and void
the warranty.
Figure 23
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The duct system must be installed respecting
the following:
B) Attach the 5” flexible pipe, using the collars provided. Important: Make sure that the plastic
wrapping around the flexible pipe will not be in contact with the fireplace.
C) Route the flexible pipe to the chosen location. The ducting system can be installed either in an
upper room or in a lower room.
D) Attach the flexible pipe to the blower, using the collars (Figure 25).
E) Fix the back draft damper to the blower outlet.
F) Attach a flexible pipe to the fan / flexible pipe adapter (square to round) and stretch it up to the
location where the heat is required.
G) At that point, the flexible pipe can be attached to any air distribution grill.
H) Install the blower heating and cooling thermostat (HCTW) in that part of the house to be heated
by the hot air duct. The thermostat can be switched to a cooling thermostat and installed in
the same room as the unit. This thermostat will turn on the blower when the room where the
fireplace is located becomes too hot.
1. Removetheplatesclosingupthe8”(203mm)
diameterholesontopofthefireplace. Then,
cut the insulation in order to obtain two 8”
(203mm) diameter openings. Fix the adap-
tors on the fireplace openings by turning
clockwise (see Figure 21).
2. Maintain at least a 2” (50 mm) clearance
between the ducts and any combustible
material; the required hole size is 13” x 13”
(330 mm x 330 mm).
Exception: For the grills, the framing
can be 10-3/4” x 10-3/4” (275 mm x
275 mm) to provide the clearance as
required by the integral spacers on the
double outlet duct system.
This option requires electricity. Make sure that the connections to the blower have been made ac-
cording to the local codes and comply with their requirements (see instruction provided with the
thermostat). Formoreinformationregardingcentralforcedairkit, refertotheBISFWK-1installation
sheet provided with the kit.
3. The maximum number of elbows in a run
of duct is two.
4. Maintainatleast6-1/2”(160mm)clearance
fromtheoutletgrillframingtoacombustible
ceiling, side wall or mantel.
5. Whentraversingacombustiblewallorfloor,
a firestop must be installed at the wall or
floor penetration. The hole size must be 13”
X 13” (330 mm x 330 mm).
6. Do not connect the hot air ducts to a central
heating system. Malfunction of the heating
system’s fan will cause the fireplace to
overheat. A furnace duct is only single wall
and not double wall as is required for the
Cambria™ fireplace hot air exhaust.
7. Use only Lennox Hearth Products grills and
components as described in this manual.
Othergrillsorregistersmaybetoorestrictive
and may overheat the fireplace or ceiling.
8. Do not use insulated flexible ducts as they
will overheat.
Adaptor
Insulated
Flex Pipe
9. Do not use tees or any other components
than the ones specifically listed here.
10.All ducts must extend upwards or horizon-
tally. Never route the ducting downwards.
11.Thehotairoutletgrillsmustbeinstalledwith
the louvers pointing downwards in order to
prevent overheating adjacent ceilings.
Figure 24
Central Forced Air Kit
Insulation
Blower
The knock-outs provided on the back and on
thesidesoftheCambriafireplaceallowthecon-
nection of insulated flexible pipe which enables
you to heat adjacent rooms up to 50 feet from
the fireplace hot air outlet.
Flex 5” Diameter
The ducting system must be installed as de-
scribed below:
A) Fix the adaptor at the back and/or the side
of the fireplace by twist-locking the adaptor
to the fireplace. You can use more than one
outlet on the fireplace (see Figure 24).
Tightening Collar
Aluminum Tape
Figure 25
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OUTSIDE AIR
OUTSIDE CONNECTION
It is mandatory to install an outside air connec-
tion to the Cambria™ fireplace. The following
components are required and are included with
the fireplace:
Outside
Intake
Aluminum Tape
•
•
Outside air kit
Plastic
Cover
4” adapter for fireplace connection
The outside air assembly must be installed ac-
cording to the following requirements:
Screw
A) Duct length should be kept to a minimum.
The maximum length of a 4” interior diam-
eter (100 mm) insulated flexible duct is 20
feet (6.1 m). The duct can be extended to a
maximumof40feet(12m)usinga6”interior
diameter (150 mm) insulated flexible duct
(See note below).
B) The air intake register must not be installed
morethan10feet(3050mm)abovethebase
of the fireplace.
Insulation
Opening
Facing
Down
Flexible Pipe
Aluminum Tape
Wall
Figure 26
C) The fresh air must come from outside the
house. Theairintakemustnotdrawairfrom
the attic, basement or garage.
OUTSIDE AIR CONNECTION TO THE FIREPLACE
D) The air intake should be installed where
it is not likely to be blocked by snow or
exposed to extreme wind and away from
automobile exhaust fumes, gas meters and
other vents.
E) Theductandregistermaybeinstalledabove
or below floor level.
Fireplace
Connection
Aluminum Tape
Plastic
Cover
Fireplace
Make a 4-1/4” (110 mm) hole in the outside
wall of the house at the chosen location. From
outside,placetheoutsideairregisterinthehole
(open side down) and fasten the register to the
wall with screws as shown (see Figure 26).
Slip the pipe into the insulated sleeve. Place
the insulated pipe over the register tube and
over the fireplace’s outside air connector (see
Figure 27). At each end, carefully pull back the
insulation and plastic cover exposing the flex-
ible pipe. Using the aluminium tape provided,
wrap the tape around the joint between the
flexible pipe and the air inlets. Carefully push
the insulation and plastic cover back over the
pipe. Using aluminium tape, fasten the plastic
cover in place.
Insulation
Flexible Pipe
Aluminum Tape
Figure 27
NOTE: We recommend not to exceed 20 feet
(6.1 meters) of 4” flexible pipe. If you require
a longer length we recommend that you use a
5” diameter flexible pipe for the complete run
up to 30 feet and a 6” diameter pipe for a run
of up to 40 feet.
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Note: 2" clearance to combustibles around chimney components re-
quired.
THE CHIMNEY SYSTEM
Chimney Installation Notes
Note:Blownorfilltypeinsulationmaterialsmustnotbeincontactwiththe
1. If possible, install an interior chimney as it will provide better perfor-
mance. In areas with continuous temperatures below 0°F (-18°C),
the use of an exterior chimney increases the likelihood of operating
problems such as low draft, high rate of creosoting, and poor start-up
characteristics. Exterior chimneys are also prone to down-drafting
and flow reversal. Installations which are located on lower floors in
the house, such as in a basement, in combination with an outside
chimney, are especially prone to flow reversal.
2. The Lennox Hearth Products fireplace model Cambria™ fireplace is
listed only with Security Chimneys International Ltd 10” dia. chimney
systems model Secure TempASHT+ / Nova TempHT6103+ or AC.
3. A chimney venting a fireplace shall not vent any other appliance.
4. The minimum chimney height is 15 feet (4.6 m) excluding the fire-
place.
fireplace or in the enclosure frame as described in ‘’Enclosure’’ section.
Note: Local codes may not require firestopping at the ceiling levels for
outside chase installations. However, it is recommended for safety and
the reduction of heat loss.
CHIMNEY INSTALLATION INSTRUCTIONS
1. Cutandframetheholesintheceiling, floorandroofwherethechimney
will pass (see Figure 29). Use a plumb-bob to line up the center of
the holes. The sizes are indicated in Table 2 for the floor and ceiling
holes and Table 3 (Page 19) for the roof holes.
5. All chimney installations must include at least one support in order to
be able to take any lateral load. The maximum chimney length that can
be supported by the fireplace is 12 feet (3.7 m) for Secure TempASHT+
/ Nova TempHT6103+ and 26 feet (8m) for AC chimney. In altitude, add
18” (450 mm) to the chimney for every 2000 feet (600 m) above sea
level.
6. The chimney must extend at least 3 feet (915 mm) above its point of
contact with the roof and at least 2 feet (610 mm) higher than any
wall, roof or building within 10 feet (3m) of it (Figure 28).
7. If the chimney extends higher than 5 feet (1500 mm) above its point
of contact with the roof, it must be secured using a roof brace.
8. A rain cap must be installed on top of the chimney. Failure to install
a rain cap may cause corrosion problems.
CHIMNEY MODEL
SqUARE HOLE
SIZE OPENING
Secure TempASHT+
Nova TempHT6103+
16-3/8 in. (416 mm)
17 in. (432 mm)
AC:
Note: See Table 3 for Sloped Roof Framing
Table 2 - Flat Roof Framing
9. Cut and frame square holes in all floors, ceilings, and roof that the
chimney will go through to provide a 2” (50 mm) clearance between
the chimney and any combustible materials. Do not fill this 2” space
with insulation or any other combustible material.
10.Portions of the chimney which may extend through accessible spaces
must be enclosed to avoid contact with combustible materials or
damage the chimney.
Figure 29 - Roof Framing
Two (2) Feet
.6 Meters
Minimum
Three (3) Feet
.9 Meters
Minimum
Ten (10) Feet
3.1 Meters
Figure 28
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Frombelow, installafirestopineachceiling/
floor separation through which the chimney
will pass. At the attic level, install an attic
radiation shield from above (see Figures
30a and 30b).
AC
Chimney
ACBI7RSA
2. For Secure TempASHT+ / Nova TempHT6103+
chimneys, place the first chimney length on
the fireplace. To lock it in place, turn 1/4 of
a turn clockwise. With the AC chimney, you
must use a starter section before installing
the first chimney length (Figure 31). Con-
tinueinstallingchimneylengthsmakingsure
to lock each length in place.
3. Everytimethechimneypassesthroughaceil-
ing or a wall, install the appropriate firestop.
Whenyoureachthedesiredheight,installthe
roof support (refer to instructions included
with the support). For an AC chimney use
an universal support AC10SU (H3265).
4. Put the roof flashing in place and seal the
joint between the roof and the flashing with
roofing pitch (see Figures 32 and 33). For
sloping roofs, place the flashing under the
upper shingles and on top of the lower
shingles. Nail the flashing to the roof, using
roofing nails.
AC10RS
Radiation Shield
Figure 30b
Rain Cap
Collar
CHIMNEY INSTALLATION
MODEL AC
Flashing
5. Place the storm collar over the flashing, and
tighten it with the bolt supplied. Finally, seal
the joint between the storm collar and the
chimney, using silicone caulking.
6. Install the chimney cap. Once the chimney
cap is in place, the roof flashing can be
washed with a solvent or vinegar and then
painted with rust-proof paint.
Attic
Radiation
Shield
Firestop
ASHT/S2100
HT6103+/HT6000+
Chimney
Universal
Support
Attic Radiation Shield
AC Starter
Section
AC10SB or
AC10SB30
Chimney Outside
Air Intake
(required when
using AC chimney)
Firestop
Figure 30a
Outside
Combustion
Air Kit
Note: Outside air kits must be
installed for both fireplace and AC
chimney.
Figure 31
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3. Use another elbow to turn the chimney
vertically. Secure the elbow, using three
(3) 1/2” (13 mm) screws (provided with the
elbow).
4. Use a plumb-bob to line up the center of
the hole. Cut a hole for the chimney in the
ceiling/floor. Frame this hole as described
previously(seeChimneyInstallationInstruc-
tions on Page 17).
5. From below, install a firestop (See Figure
30a).
6. A support (ST or SO) must be used on the
first 15 feet section (5 m).
OFFSET CHIMNEY INSTALLATION
CHIMNEYMODEL AC
Chimney
After reaching the location requiring the elbow,
proceed as follows. The minimum chimney
height when using elbows is:
Collar
Minimum Chimney Height
When Using Elbows
Fireplace Model
Chimney Model
Cambria™
Secure TempASHT+ / Nova
TempHT6103+ / AC
Flashing
Vertical Installation
Two (2) Elbows
Four (4) Elbows
Table 4
15 feet (4.57 meters)
18 feet (5.49 meters)
20 feet (6.10 meters)
7. Continue with the regular installation.
Figure 32
AC Chimney
1. Install the first elbow. Turn it in the required
direction. To lock it in place, turn 1/8 of a
turn. Fastenthestrapsattachedtotheelbow
to the surrounding frame, using nails or
drywall screws (Figure 35).
2. Install the necessary chimney lengths to
achievetherequiredoffset. Lockthechimney
lengths together. If penetrating a wall, use
a wall radiation shield.
3. Use another elbow to turn the chimney
vertically. Lock it to the chimney. Fasten
the straps attached to the elbow to the
surrounding framing using nails or drywall
screws.
4. Use a plumb-bob to line up the center of the
hole. Cutaholeforthechimneyintheceiling.
Frame this hole as described previously.
5. From below, install a radiation shield (see
Figure 30b).
Notes:
• Must return to vertical before penetrating
ceiling or floor.
• A maximum of 2 offsets are allowed.
After reaching the location requiring the
elbow, proceed as follows:
Secure TempASHT+ / Nova TempHT6103+ Chimneys
1. Install the first elbow; turn it in the required
direction. Fasten it to the chimney with
the three (3) 1/2” (13 mm) metal screws
provided with the elbow.
2. Install the necessary chimney lengths to
achievetherequiredoffset. Lockthechimney
lengths together: it is recommended to use
three (3) 1/2” (13 mm) screws. If the offset
length is made of two (2) chimney lengths
or more, use an offset support halfway up
the offset. If penetrating a wall, install a wall
radiation shield (see Figures 36 and 37).
Figure 33
Roof Down Slope Hole Size
6. Continue with the regular installation.
Degree
Of Slope
SecureTempASHT+
NovaTempHT6103+
AC
Note: When using AC chimney, an AC10SB
(H3776) starter section must be used before
installing an elbow. When an offset is needed
immediately off the top of the fireplace, a
starter section H3777 is available.
Roof
Pitch
10”
10”
0*
2/12
4/12
6/12
8/12
10/12
16-3/8”(416mm)
17” (432 mm)
16-5/8”(422mm) 17-1/4” (438 mm)
17-1/4”(439mm)
18-3/8”(466mm)
18” (457 mm)
19” (482 mm)
19-3/4” (500mm) 20-1/2” (520 mm)
21-3/8”(542mm) 22-1/8” (562 mm)
12/12
23-1/8”(588mm)
24” (611 mm)
* CrossSlope Hole Size
Putthe chimney capinto place.
Washthe roof flashing witha solventorvinegar,
thenpaint it with rust-proof paint.
Table 3
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Offset Dimensions
B
Total Height
A
Horizontal Offset
Chimney
Elbow
15º
Offset &
Height
One Length Between Elbows
Two Lengths Between Elbows
8”
12”
18”
24”
36”
48”
8” & 48”
12” & 48” 18” & 48” 24” & 48” 36” & 48” 48” & 48”
3”
4-1/4”
5-3/4”
7-1/4”
10-1/4”
13-1/4”
(337mm)
15-1/4”
(387mm)
16-1/4”
(413mm)
17-3/4”
(451mm)
19-1/4”
(489mm)
22-1/2”
25-1/2”
(648mm)
A
(76mm) (108mm) (146mm) (184mm) (260mm)
(572mm)
16-1/2” 20-1/4” 26-1/4” 32” 43-1/2”
(419mm) (514mm) (749mm) (813mm) (1105mm) (1410mm) (1575mm) (1670mm) (1816mm) (1962mm) (2261mm) (2552mm)
55-1/2”
62”
65-3/4”
71-1/2”
77-1/4”
89”
100-1/2”
B
A
ASHT+
HT6103+
10”
7-1/2”
9-1/2”
12-1/2”
15-1/2”
21-1/2”
27-1/2”
(699mm)
31”
(787mm)
33”
(838mm)
36”
(914mm)
39”
45”
51”
(191mm) (241mm) (318mm) (394mm) (546mm)
(991mm) (1143mm) (1295mm)
30º
45º
20-3/4” 24-1/4” 29-1/2” 34-3/4” 45”
(527mm) (641mm) (749mm) (883mm) (1143mm) (1429mm) (1588mm) (1670mm) (1810mm) (1943mm) (2203mm) (2489mm)
56-1/4”
62-1/2”
65-3/4”
71-1/4”
76-1/2” 86-3/4” 98”
B
A
10-1/2” 13-1/2” 17-3/4” 22” 30-1/2” 39” 44” 46-3/4” 51” 55-1/4” 63-3/4” 72-1/4”
(267mm) (343mm) (451mm) (559mm) (775mm) (991mm) (1118mm) (1187mm) (1295mm) (1403mm) (1619mm) (1835mm)
C
anada
18-1/2” 21-1/4” 25-1/2” 29-3/4” 38-1/4” 46-3/4” 51-3/4” 54-3/4” 59” 63-1/4” 71-3/4” 80-1/4”
(470mm) (540mm) (648mm) (756mm) (972mm) (1187mm) (1314mm) (1391mm) (1499mm) (1607mm) (1822mm) (2038mm)
Only
B
Chimney Elbow
Offset &
Height
One Length Between Elbows
Two Lengths Between Elbows
---
12”
18”
36”
48”
---
---
12” & 48”
18”&48”
36”&48”
48” & 48”
---
----
----
4-1/4”
(108 mm)
5-3/4”
(146 mm)
7-1/4”
(184 mm)
10-1/4”
(260 mm)
----
----
----
----
16-1/4”
(413 mm)
17-3/4”
(451 mm)
22-1/2”
(572 mm)
25-1/2”
(648 mm)
----
----
A
15º
----
----
20-1/4”
(514 mm)
26-1/4”
(667 mm)
32”
(813 mm)
43-1/2”
(1105 mm)
----
----
----
----
65-3/4”
(1670 mm)
71-1/2”
(1816 mm)
89”
(2261 mm)
100-1/2”
(2553 mm)
----
----
B
A
AC
----
----
9-1/2”
(241 mm)
12-1/2”
(318 mm)
15-1/2”
(594 mm)
21-1/2”
(546 mm)
----
----
----
----
33”
(838 mm)
36”
(914 mm)
45”
(1143 mm)
51”
(1295 mm)
----
----
10”
30º
----
----
24-1/4”
(641 mm)
29-1/2”
(749 mm)
34-3/4”
(883 mm)
45”
(1143 mm)
----
----
----
----
65”
(1651 mm)
70-1/4”
(1784 mm)
85-3/4”
(2178 mm)
96”
(2438 mm)
----
----
B
Figure 34
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OFFSET CHIMNEY INSTALLATION
Support
Straps
Straps
Chimney AC
AC Starter Section
Note: This illustration is not to scale. It represents how
thechimneymustbesupported. A30degreeoffsetonly
is allowed in the USA and a 45 degree maximum offset
is allowed in Canada.
Figure 35
OFFSET CHIMNEY INSTALLATION WITH WALL PENETRATION
Rain Cap
Collar
Roof Support
Outside Wall
Roof Flashing
Offset Support
Framing
2” x 3”
Insulated Wall
Radiation Shield
Note: In cold areas it is recommended to
protect the chimney in a insulated chase.
Figure 36
IF THE CEILING IS 9 FEET OR LESS THIS INSTALLATION CAN ONLY BE ACHIEVED USING 45° ELBOWS. SINCE ONLY 30° ELBOWS
ARE ALLOWED. IN THE U.S. THE OFFSET MUST BE DONE ABOVE THE CEILING.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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ANGLED WALL RADIATION SHIELD
(RSMI30, RSMI45, AC10RSMI30)
4.5 CHIMNEY SUPPORT INSTALLATION
CHIMNEY
MAXIMUM HEIGHT OF
SUPPORTED CHIMNEY
Universal Roof Support
This support has three possible uses:
10” diameter
Secure TempASHT+
Nova TempHT6103+
Offset Support RoofSupport
1. For Secure TempASHT+ / Nova TempHT6103+
,
When traversing a combustible wall with the
chimneyata30ºor45ºangle,anangledfirestop
or wall radiation shield must be installed. Only
one is required.
14 Feet
(4.3 meters)
20Feet
(6.1meters)
it must be used on a roof to support the
chimney.
2. Itmaybeusedonafloor,ceilingorroofabove
an offset to support the chimney above the
offset.
30 Feet
40Feet
AC
(9.15 meters) (12.16meters)
Note: 45º angle for Canada only
Table 6
3. It may be used on a floor, ceiling or roof as
asupplementarysupportwhenthechimney
height exceeds 12 feet (3.7 m).
In cold climate locations, we recommend that
youusetheinsulatedwallradiationshieldsince
it will maintain the home’s thermal barrier.
CHIMNEY CHASE AND MULTIPLE TERMI-
NATIONS
Table 6 gives maximum height of supported
chimney.
Forthepurposeofthismanual,achimneychase
is considered a part of the chimney system
rather than part of a building. The termination
must be placed a minimum of 18” (460 mm)
above the chase.
RSMI30, RSMI45, AC10RSMI30
NOTE: For the AC chimney, a support section
(AC10SL) must be used every 20 feet (6 m)
or an universal support every 15 feet (4.5 m)
instead of the universal roof support (ST).
Chimney (10” dia.) Angle Hole Dimension
17-9/16” x 45-
3/4” (446 mm x
1162 mm)
Secure TempASHT+
30º
Nova TempHT6103+
Secure TempASHT+
Nova TempHT6103+
45º
Canada
only
17-1/2” x 30”
(444 mm x 762
mm)
For installations where more than one chimney
is located in the same chase or within the same
area, we suggest that their terminations be
separatedbyatleast16”(410mm)horizontally,
and 18” (460 mm) vertically. This separation is
to prevent smoke migrating from one chimney
to another (see Figure 38).
Forroofsupportinstallation,refertotheinstruc-
tions provided with the support.
17” x 42-1/2”
(432 mm x
1080 mm)
UNIVERSAL OFFSET SUPPORT
AC
30º
This support is used to support the chimney
aboveanoffset. Whenthechimneyoffsetisused
to traverse a wall this support may be used on
the wall to support the chimney. The maximum
heights are given in Table 6. For offset support
installation, refer to the instructions provided
with the support.
Table 5
Insulated Wall
Drywall
18” (460 mm)
16” (410 mm)
18” (460 mm)
18” (460 mm)
16” (410 mm)
Insulated Wall
Radiation Shield
Figure 37
Figure 38
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OPTIONAL INSTALLATION ACCESSORIES
CHIMNEY - PARTS AND COMPONENTS LISTS
Installation Accessories
Description
AC Chimney*
(10” Diameter AC - Air Cooled)
Cat./Part No.
* AC Chimney is NOT recommended at elevations above 4,000 feet or in cold climates
(climates where temperatures will fall below 32° F / 0° C).
Outside Air Kit (included with fireplace)
Outside air kit, UZI
UZI
Description
Cat./Part No.
UZI outside air kit fireplace adaptor, UZIAD
Gravity Kit
UZIAD
One of the following adaptors is required
if installing an AC chimney system
Starter Section, 10” Dia., AC10SB
Offset Starter Section 30º, 10” Dia., AC10SB30
H3776
H3777
GravityKit,Completedoubleductingsystemincluding:2elbows90º,2
telescopic lengths, 2 grill supports and 2 black grills, 7B30ZK-1
7B30ZK-1
Gravity Kit Accessories
The following outside air kit is required if installing an AC chimney system
Black grill with support, 7B30ZO
Brass grill (for 7B30ZK-1), 7B30ZGB
Elbow 90º, 8” dia., 7B26ZE90
7B30ZO
7B30ZGB
7B26ZE90
7B26ZE45
7B26ZLA
7B26ZL2A
7B26ZR
Outsideairkit(chimney)(flex,insulation,outsideregister
and coupling), ACZI
H1967
Lengths and Misc. Chimney Components
12” Length, 10” Dia., AC10L12
18” Length, 10” Dia., AC10L18
36” Length, 10” Dia., AC10L36
48” Length, 10” Dia., AC10L48
15º Elbow, 10” Dia., AC10E15
30º Elbow, 10” Dia., AC10E30
Rain Termination Cap (regular), 10” Dia., AC10CPR
Spark Arrester Screen, PE+
H3765
H3766
H3767
H3768
H3760
H3761
H3759
PE
Elbow 45º, 8” dia., 7B26ZE45
Telescopic length, 8” dia., 7B26ZLA
Adjustable length, 8” dia. (2” - 5”), 7B26ZL2A
Radiation shield (for grill), 7B26ZR
Central Forced Air Kit Accessories
Central Forced Air Kit, Central forced air kit including: blower
(BISZY), flex adaptor (BISAF), 2 clamps, variable speed
control (VRUW), thermo-disk (VTU), fan to flexible pipe
adapter (BISAVF), back draft damper (BISBD), aluminium
tape, BISFWK-1
BISFWK-1
Wall Band, XBM
XBM
Fireplace to Flex adaptor and 2 clamps, BISAF
Flexible pipe 5” I.D. x 15 ft. Long, 5FLEX15
Flexible pipe 5” I.D. x 30 ft. Long, 5FLEX25
Blower 250 CFM for central forced air kit, BISZY
BISAF
5FLEX15
5FLEX25
BISZY
Supports
Support section (10”), AC10SL
Universal support, AC10SU
H3778
H3265
Roof Flashings
Blower variable speed control with decorative wall plate for
(BISZY), VRUW
VRUW
Flat roof flashing (includes spacer & collar), ACBI7FR
H3275
H3276
Roof Flashing, Adjustable, 1/12 - 7/12 (5º - 30º) (in-
cludes spacer & collar), ACBI7FAR
Thermo-disk, on/off blower control (for BISZY), VTU
Blower to flexible pipe adaptor, BISAVF
Heating and cooling thermostat, 24 V, HCTW
Backdraft damper, BISBD
VTU
BISAVF
HCTW
BISBD
Roof Flashing, Adjustable, 8/12 - 12/12 (30º - 45º)
(includes spacer & collar), ACBI7FBR
H3277
Misc.
Firestop, AC10BF
H3758
H3769
H3270
H3775
H3272
H3774
H3274
H3278
Fireplace Blower Kit
Radiation Shield, AC10RS
Two blower kit with thermostatic control, UZY5
UZY5
Attic Radiation Shield, ACBI7RSA
Telescopic Attic Radiation Shield, AC10RST
Insulated Wall Radiation Shield 30º, AC10RSMI30
Insulated wall radiation shield 45º, AC10RSMI45
Outside air coupler for air kit, UACZI
Storm Collar, AC10FC
Fireplace Model Cambria™ - Approved Venting Components manu-
factured by Security Chimneys International only.
•
10” diameter chimney - AC (air cooled), Secure Temp™ ASHT+ (or Nova
Temp™ HT6103+).
Notes:
1. (Projet NovaTemp) HT6103+ is equivalent to ASHT+
2. AC Chimney is Not recommended at elevations above 4000 feet or in cold
climates where temperatures are likely to fall below 32° F (0° C). When using
AC chimney, an AC10SB (H3776) starter section must be used before installing
an elbow. When an offset is needed immediately off the top of the fireplace, a
starter section H3777 is available.
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CHIMNEY - PARTS AND COMPONENTS LISTS
Secure Temp ASHT+ 1” High Temp. Insulated Stainless Steel Chimney
10” I.D., Double-Wall Stainless Steel, Listed to CAN/UCL-S604 & UL-103HT
Description
Part/Cat. No.
Lengths and Misc. Chimney Components
8” length, 10” Dia., 10L8-N
10L8-N
10L12-N
10L18-N
10L24-N
10L36-N
10L48-N
10LA
12” length, 10” Dia., 10L12-N
18” length, 10” Dia., 10L18-N
24” length, 10” Dia., 10L24-N
36” length, 10” Dia., 10L36-N
48” length, 10” Dia., 10L48-N
Adjustable Length 12”, 10” Dia., 10LA
15º elbow, 10” Dia., 10E15
30º elbow, 10” Dia., 10E30
Rain Termination Cap, 10” Dia., 10CC
Spark Arrester Screen (universal spark arrester band), PE
Wall Band, XBM
10E15
10E30
10CC
PE
XBM
Supports
Offset Support, XSO
XSO
XST
BS2
Roof Support, XST
Roof Brace, BS2
Firestops
Firestop, 10BF
10BF
10RS
Radiation Shield, 10RS
Insulated Attic Radiation Shield, 10RSA2
Insulated Wall Radiation Shield, 10RSM
Insulated Wall Radiation Shield, 30º, 10RSMI30
Uninsulated Wall Radiation Shield, 30º, 10RSM30
Roof Flashings
10RSA2
10RSM
10RSMI30
10RSM30
Flat Roof Flashing, 10FR
10FR
10FAR
10FBR
10FC
1/12 - 7/12 (5º - 30º), 10FAR
8/12 - 12/12 (30º - 45º), 10FBR
Storm Collar, 10FC
Anchor Plate, 10SP
10SP
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REPLACEMENT PARTS LIST
SPECIFICATIONS
Cambria™ - Replacement Parts
Cat. No.
Model
Description
Front Edge Refractory Brick
Cat./Part No.
PR-SR2693
PR-SR2821
PR-SR2823
PR-SR2822
PR-SR2692
PR-SR2722
PR-SACBTFBK2
PR-SR2677
PR-SR2824
H8159
H6998
Cambria
Back Refractory Brick
Right Side Refractory Brick
Left Side Refractory Brick
Bottom Refractory Brick
Wooden Door Handle
Decorative Screw Caps (2)
Ceramic Glass (1)
Product Reference Information
Weight w/ crate
675 lbs
500 lbs
Weight w/out crate and
refractory bricks
Height
Width
59” (1499mm)
48-1/2” (1232mm)
29” (737mm)
8-1/2 lb/ft.
Depth
Andiron (2)
Chimney weight ASHT+ (10” dia.)
Chimney weight AC (10” dia.)
Black Metallic Paint “Forrest Paint” Can
Door Gasket: 58-3/4” 5/8” Dia., (order 1 per door)
Right Door Assembly
Left Door Assembly
4 lb/ft
PR-SR1823N
PR-SR2678
PR-SR2679
PR-SR2701
PR-SR2715
PR-SR2674
PR-SR2762
PR-SR2665
PR-SR2723
PR-SR2779
PR-SR2680G
PR-SR2680D
PR-SR2714
PR-SR1800DLV
PR-SR1800GLV
PR-SR2661
PR-SR2659
PR-SR2660
PR-SR2658
CLEARANCE TO COMBUSTIBLES
Finishing Facade
The following clearances meet the minimum requirements for a safe
installation:
Door Lock Tab
Bearing
• Side wall (fireplace front): 24” (457 mm) measured from the fireplace
Chimney Damper Control Handle And Rod
Chimney Damper Plate And Pivot Rod
Fire Screen
door.
• Ceiling: 7’ 6” (2286 mm) measured from the base of the fireplace
Fire Screen Support Rod
Left Slider Assembly
• Fireplace enclosure:
Bottom: 0”
Side: 0” to spacer
Back: 0” to spacer
Top: Do not fill the space above the fireplace with any material
(Except the wood framing. See Figure 15)
Right Slider Assembly
Slider Stopping Plate
Right Hinge
Left Hinge
• Chimney: 2” (50 mm)
Fireplace Top Panel
Fireplace Left Side Panel
Fireplace Right Side Panel
Fireplace Back Panel
• Mantel: 59” (1422 mm) measured from the base of the fireplace.
Contact an Authorized Lennox Hearth Products dealer to obtain any of
these parts. Never use substitute materials not approved by Lennox
Hearth Products. Use of non-approved parts can result in poor perfor-
mance and safety hazards.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
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Normally, all parts should be ordered through your Lennox Hearth
Products distributor or dealer. Parts will be shipped at prevailing prices
at time of order.
WARRANTY
Your fireplace is covered by a limited warranty. Please read the warranty
to be familiar with its coverage.
When ordering repair parts, always give the following information:
Retain this manual. File it with your other documents for future refer-
ence.
1. The model number of the appliance.
2. The serial number of the appliance.
3. The part number.
4. The description of the part.
5. The quantity required.
PRODUCT REFERENCE INFORMATION
We recommend that you record the following important information
about your fireplace. Please contact your Lennox Hearth Products dealer
for any questions or concerns. For the number of your nearest Lennox
Hearth Products dealer, please call 1-800-9-LENNOX.
6. The installation date of the appliance.
If you encounter any problems or have any questions concerning the
installation or application of this system, please contact your dealer.
REPLACEMENT PARTS
LENNOX HEARTH PRODUCTS
1508 Elm Hill Pike, Suite 108
Nashville, TN 37210
See Page 25 for a complete replacement parts list. Use only parts sup-
plied from the manufacturer.
Your Fireplace's Model Number________________________________________
Your Fireplace's Serial Number ________________________________________
The Date On Which Your Fireplace Was Installed___________________________
Your Dealer's Name _________________________________________________
Your Dealer's Phone Number__________________________________________
Lennox Hearth Products reserves the right to make changes at any time, without notice, in
design, materials, specifications, prices and also to discontinue colors, styles and products.
Consult your local distributor for fireplace code information.
Printed in Canada © 2008 by Lennox Hearth Products
P/N 850,057M REV. E 06/2010
1508 Elm Hill Pike, Suite 108 • Nashville, TN 37210
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