Lexmark MONTEST User Manual

INSTALLATION AND

TM

OPERATION INSTRUCTIONS

MONTECITO ESTATE™

EPA Wood-Burning Fireplace
P/N 850,038M REV. E 01/2008

MODEL

MONTEST

This installation manual will enable you to obtain a safe, efficient and
dependable installation of your fireplace system. Please read and
understand these instructions before beginning your installation.

Do not alter or modify the fireplace or its components under any circum­stances. Any modification or alteration of the fireplace system, including
but not limited to the fireplace, chimney components and accessories,
may void the warranty, listings and approvals of this system and could
result in an unsafe and potentially dangerous installation.

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

WARNINGS

• Hot! Do not touch! The glass and
surfaces of this appliance will be hot
during operation and will retain heat
for a while after shutting off the appli­ance. Severe burns may result.

• Carefully supervise children in the
same room as appliance.

• If small children are present in the home, it
is recommended that this appliance be fitted
with a Firescreen kit. See Page 20 for ordering
information.

Listed to standards:
ULC-S610 & UL-127
Report No. 304-7213
EPA Cert. No. 609

Lennox™ 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.
Consult your dealer to select the correct door
model.

• Important! To assure proper alignment of glass
doors: Install this fireplace in a square and
plumb condition, using shims as necessary at
sides and/or bottom.

• Install the fireplace only as described in these
instructions.

PIMONTEST REV. 3

IMPORTANT! GENERAL SAFETY
PRE CAUT IONS . REA D AND
UNDERSTAND THESE SAFETY
RULES BEFORE YOUR FIRST FIRE.

WARNING

Never leave children unattended
when there is a fire burning in
the fireplace.

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.

Never leave your fireplace unat­tended while it is burning.

WARNING

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

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

The fireplace must be operated
with the doors fully opened or
fully closed. If the doors are
left partly opened, smoke may
be drawn into the room. Use
optional firescreen when doors
are fully opened.

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

This fireplace has NOT been
tested with an unvented or vented
gas log set. To reduce risk of fire
or injury, do not install a gas log
set into this fireplace.

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.

Always ensure that the air inlet to
the fireplace is free from debris
and any other obstructions that
can block the entrance of air.

The Montecito Estate™ must be
installed with an outside air kit,
which is included with fireplace.

WARNING

WARNING

2

CONGRATULATIONS!

In selecting this LENNOX wood-burning appliance you have chosen one of the finest
fireplaces available. The Montecito Estate™ is a clean burning EPA certified fireplace
that is designed to provide you dependable service as well as warmth and enjoyment
for many years to come.

Please carefully read and follow all of the instructions found in this manual. Please pay
special attention to the safety instructions provided in this manual. This information
will be useful to you now and in years to come, so keep the manual handy and refer to
it as needed.

TABLE OF CONTENTS

Safety Rules ......................................Page 2

Introduction ......................................Page 3

Parts Required .................................Page 3

Optional Equipment ...........................Page 3

Operating The Montecito Estate .........Page 3

Fuel ...................................................Page 3

Combustion Control .........................Page 4

Refueling For Best Performance .......Page 5

Smoking – Causes And

Troubleshooting ..............................Page 5

Important Cautions ...........................Page 6

Maintaining Your

Montecito Estate ............................Page 6

Creosote ............................................Page 6

Chimney Maintenance .......................Page 6

Dealing With A Chimney Fire ............. Page 6

Finish Door Casing Care .................... Page 6

Refractory Replacement .................... Page 6

Door Installation ...............................Page 7

Door Adjustment ...............................Page 7

Glass Care - Replacement .................Page 7

Glass Care - Cleaning ........................Page 7

Gasket Replacement ........................Page 7

Fireplace Installation ........................Page 8

Locating The Montecito Estate ...........Page 8

Hearth Extension Requirements .......Page 8

Framing, Facing And Mantel ..............Page 8

Hot Air Ducting Installation ..............Page 10

Gravity Kit .........................................Page 10

Outside Air Kit ..................................Page 12

Chimney System ...............................Page 13

Chimney Installation Notes ...............Page 13

Chimney Installation Instructions ......Page 14

Offset Chimney Installation ...............Page 15

Angled Wall Radiation Shield ............Page 18

Chimney Support Installation ............Page 18

Chimney Chase And

Multiple Terminations......................Page 18

Masonry Application Instructions .....Page 19

Installation Accessories ....................Page 20

Chimney Components Lists ..............Page 20

Replacement Parts ............................Page 23

Specifications ....................................Page 23

Clearances ........................................Page 23

Product Reference Information .........Page 24

THE FIREPLACE

INTRODUCTION

The Montecito Estate wood-burning fireplace
is an energy efficient, heat circulating, closed
combustion fireplace. You will receive a lifetime
of comfort and enjoyment from your fireplace
provided it is installed, maintained and oper­ated properly.

• Please read these instructions and retain

this manual for future reference.

• Before beginning the fireplace installation,

consult the local authorities to obtain your
building permit and check your local building
codes. Install the fireplace only as described
in these instructions and using only Lennox
Hearth Products components.

• The Montecito Estate is not intended for use

with a gas log set. Do not use a fireplace
insert or any other product with this fireplace
unless it is specified by Lennox for use
with this appliance. Failure to follow these
instructions will void the certification and the
warranty of the fireplace and may result in
an unsafe installation.

• These appliances are designed to provide
supplemental heat to the immediate area only.
Therefore, it is advisable to have an alternate
heat source when installed in a dwelling.

• These appliances are not approved for
Manufactured Home installations.

PARTS REQUIRED

Fireplace model: MONTEST

• 7” diameter chimney - Model Secure Temp

S-2100+, Nova Temp HT6000+, Secure
Temp GX (U.S. only) or ACBI manufactured
by Security Chimneys International only,
including:

- Chimney lengths

- Elbows (where necessary)

- Associated components as per these
installation instructions

• ..Decorative Doors - Required

....(Order Separately - See Page 20)

• Front Facade kit - Required

...(Order Separately - See Page 20)

• UZY5 Blower (included in the fireplace).

• VRUW Blower Speed Control (included)

• Outside air kit (Included w/Fireplace)

OPTIONAL EQUIPMENT

- AC Chimney Adaptor
(required if using AC Chimney)

- AC Chimney Outside Air Kit

- Gravity Venting System

- Rigid Firescreen

OPTIONAL EQUIPMENT

Additional Equipment (optional)

- Gravity Venting System

- TUBINOX chimney (or PROJET SS), 7”
diameter with adaptor for installation in a
masonry chimney.

OPERATING THE MONTECITO ESTATE

Fuel - USE SOLID NATURAL WOOD FUEL
ONLY. The Montecito Estate 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.

Make sure the doors are properly adjusted,
thus avoiding color change to finish due to
overheating.

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 of any dust accumulated on
the fireplace which 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.

HEAT OUTPUT

The Montecito Estate is the largest member of
the “Dave Lennox Signature Collection” of high
efficiency fireplaces. The heat generated from its
fire is more efficiently captured and distributed.
In spite of the large amount of heat that the

Montecito Estate can deliver, it should not replace
the main source of heat in your home. This
fireplace will bring extra warmth and ambiance
to your home by distributing its heat as describe
further in the manual.

3

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COMBUSTION CONTROLS

Primary Air & Air Boost Controls

There is no flue damper in the Montecito Es­tate™. As is common with air tight appliance,
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. This air com­bustion control should be in the closed position
when the fireplace is not in operation. This will
minimize air leakage up the chimney.

The combustion air control should be opened
before opening the doors to minimize the possi­bility of back draft coming into the room (Figure

1-A) More details are available in Refueling For
Best Performance on Page 5.

Time Delayed Air Boost System

The time delayed air-boost system register is
located underneath the door handles. Placed
in the fully opened position, a timer with a
maximum duration of 2 hours is engaged. The
register gradually reduces the amount of air
injected, allowing for a better start of the fire,
whatever the conditions (See sections Building
a Fire and Refueling For Best Performance for
proper sequence of operation). This allows
you to start the fire, set the primary air control
to the desired burn level and the fireplace will
automatically adjust itself to that level once the
fire is fully established (Figure 1-B).

Accelerated Combustion

The maximum heat output for the Montecito
Estate is achieved by burning with the door
closed and the combustion air opened and
pulled out. Through this method, the Montecito
Estate can produce up to 80,000 BTU of heat
per hour.

However, it will be necessary to reload with wood
every one or two hours. This is the least efficient
method of burning the Montecito Estate .

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.

Figure 1

Combustion Air

Register

(A)

Time Delay

Air-Boost Control

(T.D.A.B.)

Figure 2 -

Accelerated Combustion

Medium Combustion

This is the recommended mode of operating
the Montecito Estate 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

(B)

many factors, including chimney length and the
moisture content of the wood.

For instance, a long chimney will necessitate
closing the damper more. To obtain the proper
combustion, close the damper completely, then
open it about 1/4” to 1/2”. Three medium size
pieces of cord wood-burning on a bed of hot
coals will generate an approximate heat output
will of 35,000 BTU per hour and the loading time
will be about every 3-4 hours. Softwoods may
be burned using this method but the combustion
time will be substantially reduced.

4

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Figure 3 - Medium Combustion

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).

The unit will burn best with 2-3 pieces of cord
wood spaced 1 to 2 inches apart and allowing
air to get under the fuel. Criss-crossing or ar­ranging the fuel so that air can get underneath
will help the fire to get started easily. The unit
should be operated with the air control fully
open long enough to get the cord wood well
ignited.

REFUELING FOR BEST PERFORMANCE

As the fire burns, air goes up the chimney. This
air must be replaced through the outside air duct.

When operating the Montecito Estate, open a
nearby window temporarily to check if there is
adequate replacement air supply. Occasionally,
there may be a small amount of smoking upon
lighting the fire, until the chimney heats up but
this should not last. If the fireplace continues
to smoke it is probably for one of the follow­ing reasons:

Do not allow the wood to burn without flame,
since this will produce excessive creosote in
the unit. Creosote may accumulate on the glass
door. This method of burning should be used

only after operating the Montecito Estate™ 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 and at this combustion rate,
the level of BTU’s is at its lowest.

Figure 4 - Slow Combustion

Building a Fire

A) 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. The kindling should
be placed at the center of the firebox so as
to allow for sufficient air circulation.

B) Adjust the primary air control and start the

time delayed air-boost system by pushing
the register towards the right. Light the
newspaper. Leave the doors partially opened
to facilitate the start-up.

C) Once kindling fire is well established, cord

wood can be added. You may set the primary
air control to the desire level (see Primary

Air Combustion Control and Air Boost Con-
trols section for proper operation of the air

controls).

D) Set the primary control to the desired burn

level. The fireplace will automatically go to
that level after the fire is fully established
and the air boost is closed.

To reload the Montecito Estate at the end of a
combustion cycle, when no flame is visible and
there are only ashes left:

A) Completely open the air control level and

the T.D.A.B. (Time Delay Air Boost) level.
See Figure 1.

B) Open the doors about 1” and wait 5 seconds

until the air flow has stabilized. Then open
the doors completely, put the logs in and
close the doors.

C) Set the air control to the desired burn level.

The T.D.A.B will close by itself progres­sively.

To reload the Montecito Estate when the fireplace
is still hot with a few visible flames:

A) Open the air control completely. The T.D.A.B

can be set to a lower setting in order to
facilitate lighting.

B) Open the doors about 1” and wait 5 seconds

until the air flow has stabilized. Then open
the doors completely, put the logs in and
close the doors.

C) Set the air control to the desired burn

level.

Notes:

• For spectacular fire and optimization of the
fireplace efficiency, we recommend that the
wood load be placed as far back as pos­sible.

• It may be necessary to turn off any blower(s)
in operation during the refueling process in
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.

SMOKING –
CAUSES AND TROUBLESHOOTING

To reduce the likelihood of smoke coming
into the room when opening the door, set the
combustion air controls to the left (“Acceler­ated Combustion”) before opening the door.
Your fireplace has been designed and tested
to provide smoke free operation.

A. The doors are partially opened

When you open the doors, open them com

pletely.

B. Negative pressure in the house
C. 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.

D. Wet wood

Wet or tarred wood will smoulder and smoke

instead of burn properly.

E. Dirty or blocked chimney

Check to make sure the chimney is clear and

clean.

F. Chimney not long enough

The minimum chimney height is 12 feet 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 15 feet. Additional
height will increase draft and will decrease
the tendency to smoke.

G. Poor chimney draft

With no fire, there should be sufficient draft

to exhaust cigarette smoke introduced under
the baffle. Chimneys installed against an
outside wall without protection may gener­ate back draft problems which will cause
start-up problems. To prevent this, open
a nearby window; roll up a piece of paper,
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.

-

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

5

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, kerosene, charcoal

lighter fluid or similar liquids to start or
rekindle a fire in this fireplace. Keep all
such liquids well away from the fireplace
at all times.

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. Wood
protectors, metallic paper, coal, plastic,
waste, sulphur and/or oil will damage the
fireplace.

G. Do not allow the wood to smoulder or burn

without flame, since this will produce
excessive creosote in the unit.

MAINTAINING YOUR MONTECITO
ESTATE

Creosote

When wood is burned slowly without a flame,
it produces tar and other organic vapors which
combine with expelled moisture to form a black
deposit called creosote which accumulates on
the flue lining. When ignited, this creosote
makes an extremely hot fire. If 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 smoldering fires and by proper
refueling 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.

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 com
ing 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.

REFRACTORY REPLACEMENT

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 section First Fires. 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:

6

5

Figure 5

DOOR FRAME FINISH 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 frame’s finish.

DISPOSING OF ASHES

Remove ashes only when the fire is out and
the ashes are cold (24 to 48 hours after the
fire is out).

WARNING

When cleaning the fireplace,
the 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 outside the house, pend-

-

ing 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.

1. Remove the side refractory brackets (6)

2. Remove the front refractory bricks (3)

3. Remove the bottom refractory brick (4)

4. Remove the left side refractory bricks (5)

5. Remove the right side refractory bricks (2)

6. Remove the back refractory brick (1)

7. Remove the deflectors (7) above the tubes
(Can be removed without removing other bricks
for chimney cleaning)

To install the new refractory bricks, follow the
above steps in reverse.

7

1

4

2

6

3

6

DOOR INSTALLATION

The doors must be put in place only when the installation of the Montecito
Estate™ is completed. All you have to do is fit the male part of the hinge,
already on the door, to the female part, which is on the fireplace. To remove
the doors, 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 7-1)

Figure 6 -

Door Installation

1

2

Figure 7

GLASS CARE

Glass Replacement

The glass used for the Montecito Estate is a high temperature ceramic
glass (1,400° 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 Montecito Estate . Replacement
glass should be purchased from a Lennox Hearth Products dealer (see
“Replacement Parts” on Page 22).

DOOR ADJUSTMENT

The doors may need to be adjusted to be completely airtight. The gaskets’
air-tightness can be adjusted using the adjustment screw located on the
right side of the fireplace facade (An Allen key #1/8 – not supplied - will
be necessary for this adjustment) (see Figure 7-2).

Checking Door Seal

A one-inch strip of paper may be used to perform a test of the integrity
of the door seal. Close the door on the paper in at least eight points. It
is normal to feel only a slight amount of friction. The door gasket does
not need to be “tight” in all areas, since a small amount of leakage is not
hazardous or detrimental to the performance of your fireplace.

WARNINGS

• Use only a Lennox Hearth Products glass doors,
specifically designed for the Montecito Estate
fireplace.

• The fireplace cannot be operated without a door.
Consult your dealer to select the correct door
model.

• Important! To assure proper alignment of glass
doors: Install this fireplace in a square and
plumb condition, using shims as necessary at
sides and/or bottom.

Do not operate the unit with cracked or broken glass.

Glass Cleaning

The Montecito Estate is designed to keep the glass clean under normal
operating conditions. If the Montecito Estate 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
section Refueling For Best Performance). To clean the glass, there are a
number of specially designed cleaners to remove creosote. Your authorized
Lennox Dealer can recommend a suitable cleaner. 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.

Gasket Replacement

Remove the doors from the unit (see section Door Installation) and lay
them on a clean nonabrasive 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 Dealer in
the following dimensions:

Gasket Part # Length Qty Dimensions

Around the glass

On the door frame

Between the
doors

Table 1

PR-SR-1685C 61-3/4” 2 1” width

x 3/16” thick

PR-SR-1825I 48-3/8” 2 3/4” diameter

PR-SR-1823J 17-5/8” 2 5/8” diameter

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

7

FIREPLACE INSTALLATION

Locating The Montecito Estate™

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 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 on

Pages 8 & 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 in the appendix. 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.

Figure 9

Fireplace

Tile or Marble

Minimum 1”
Cement Board

2” x 4” Framing

The Montecito Estate may be installed directly on the floor or on a raised
base and a minimum of 80” measured from the base of the appliance to
the ceiling is required.

Facade Installation

Install the Facade per instructions provided in Facade Kit (ordered sepa­rately - see Page 20).

Hearth Extension Requirements

The Montecito Estate may be installed directly on a combustible floor;
however, the combustible floor in front of the fireplace must be covered
with one inch (1 in) of non-combustible support material (cement board,
cement block or other) before applying the finish material (tile, marble,
stone, etc). See Figure 8.

Hearth Extension Requirements

Area where
wood Mantel
can be
installed

24”

Framing, Facing And Mantel

The construction of the framing, facing, and mantel must be in accordance
with the standards and the following illustrations (Figures 10 & 11):

A. Frame the fireplace using 2” x 3” or heavier lumber.

B. WARNING: Combustible materials cannot 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 80” (2,032 mm) measured from the base
of the appliance.

C. Frame the fireplace with vertical studs at the sides of the fireplace run-

ning from floor to ceiling (see Figure 10). 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 support the facing and man
tel.

D. WARNING: The fireplace must not be in contact with any insula-

tion or loose filling material. Cover the insulation with Drywall
panels around the fireplace.

-

56” Min.

COLD CLIMATE INSTALLATIONS

Climates where temperatures will fall below 32° F (0° C).

24”

Hearth

4”

46-5/16”

45 Deg.

16”

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. Also, the outside air inlet duct
should be wrapped with noncombustible insulation to minimize the

Non-Combustible Material

Figure 8

8

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

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 cold climates.