Lennox BRENTWOOD LV User Manual

INSTALLATION AND
OPERATION INSTRUCTIONS

Brentwood™ LV

Shown with louver kit installed

Shown with clean face kit installed

THIS UNIT REQUIRES THE INSTALLATION OF A

FINISHING KIT. SEE “PARTS REQUIRED”

SECTION FOR DETAILS

Fireplace, Also For Use In

Manufactured Homes With Solid Fuel Only.

EPA Wood-Burning Fireplaces
P/N 506023-13 REV. A 02/2011

MODEL

Brentwood LV

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

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

Lennox Hearth Products wood-burning fireplaces are designed for use
as a supplemental heater. They are not intended for continuous use
as a primary heat source.

SAVE THESE INSTRUCTIONS

FOR FUTURE REFERENCE

TM

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
an adjustable safety gate or barrier screen.

Listed to standards:
ULC-S610 & UL-127
Report No. 3011202
EPA Cert. No. 537

PIBRENTLV REV. 1 02/2011

WARNINGS

• The fireplace cannot be operated without a door.
Consult your dealer to select the correct door.
Important! To assure proper alignment of glass

•
doors: Install this fireplace in a square and
plumb condition, using shims as necessary at
sides and/or bottom.

•

Install the fireplace only as described in these
instructions.

IMPORTANT! GENERAL SAFETY
PRE CAUT IONS . REA D AND
UNDERSTAND THESE SAFETY

RULES BEFORE YOUR FIRST FIRE.

WARNING

THE FIREPLACE MUST BE OPER­ATED WITH THE DOOR FULLY
OPENED OR DOOR FULLY CLOSED.
IF THE DOORS ARE LEFT PARTLY
OPENED, GAS AND FLAME MAY BE
DRAWN OUT OF THE FIREPLACE
OPENING, CREATING RISKS OF
BOTH FIRE AND SMOKE.

WARNING

NEVER use gasoline, gasoline­type lantern fuel, kerosene,
charcoal lighter fluid, naphtha,
engine oil or similar liquids to
start or “freshen up” a fire in this
fireplace. Keep any flammable
liquids a safe distance from the
fireplace at all times.

WARNING

THIS FIREPLACE HAS NOT BEEN
TESTED WITH AN UNVENTED
GAS LOGS OR A FIREPLACE
INSERT. TO REDUCE RISK
OF FIRE OR INJURY, DO NOT
INSTALL AN UNVENTED GAS
LOG SET OR FIREPLACE INSERT
OR OTHER PRODUCTS NOT
SPECIFIED FOR USE WITH THIS
FIREPLACE.

WARNING

Never leave your fireplace unat­tended while it is burning.

WARNING

To avoid the risk of damaging
fireplace materials and increas­ing the risk of fire, do not use the
fireplace to cook or warm food.

2

WARNING

Use care when selecting window
treatments for windows located
near the fireplace. Avoid using
combustible flowing window
treatments such as curtains on
nearby windows that are of suf­ficient length to be blown in front
of an open flame when the window
is opened. Keep any combustible
furniture, materials or decorative
pillows at least 48" (1219 mm)
from the front fireplace opening.

WARNING

Never modify or alter your fireplace
system in any way. To do so may
create a potential fire hazard and
void the limited warranty

, listings

and approvals of this system.

IMPORTANT

When burning wood, use SOLID
NATURAL DRY WELL-SEASONED
WOOD ONLY. Hardwoods are rec­ommended (soft woods tend to burn
very quickly).

• DO NOT burn treated wood,
charcoal, coal, trash, cardboard,
driftwood, woods dipped in tar,
Christmas tree greens, pitch, pine
tar, creosote, chemical chimney
cleaners, flame colorants, poly­styrene packaging, wood prod­ucts with synthetic binders (i.e.
plywood). Plywood, lumber and
other misc. materials can produce
abnormally high temperatures,
sputtering and smoking fires and
may contain hazardous chemicals
to treat insects and fungus.

• Burning unapproved fuels can
produce excessive temperatures,
beyond the design capabilities
of the fireplace and may produce
excess sparks or may contain
hazardous chemicals. Burning
unapproved fuels can result in
a chimney fire, a house fire,
personal injury, death or loss of
property.

WARNING

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

WARNING

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

IMPORTANT

WHEN INSTALLED IN A MOBILE OR
MANUFACTURED HOME:

• Mobile or manufactured home
installations must be installed in
accordance with the requirements
of the Department of Housing and
Urban Development (HUD) “Mobile
Home Construction and Safety stan­dards” for US or Canada Mortgage
and Housing Corporation (CMHC)
for Canada.

• The fireplace must be fastened to
the floor by unfolding and screwing
the small tabs on both sides at the
bottom of the fireplace.

• It is necessary to have access
openings, for inspection purpose
only, into built-in enclosures sur­rounding the fireplace installation.
Such openings to require a house­hold tool for access.

• The vapor barrier of the mobile
home shall be as close as possible
of the location where the chimney
assembly penetrates the ceiling
and roof structure with no interfer­ence to the required clearance to
combustible material.

• When the mobile or manufactured
home has a flat roof, the Attic Radia­tion Shield must be installed from
below going through the roof (See
Figures 29b and 29d).

• Warning: Do not install in a
sleeping room

WARNING

Neither the manufacturer nor the
seller warrants “smoke free”
operation nor are we respon­sible for inadequate system draft
caused by mechanical systems,
general construction conditions,
inadequate chimney heights,
adverse wind conditions and/or
unusual environmental factors or
conditions beyond our control.

CONGRATULATIONS!

PARTS REQUIRED

When you purchased your new wood 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 wood fireplace.

Thank you for selecting a Lennox Hearth Products wood fireplace as the answer to your
home supplemental heating needs.

TABLE OF CONTENTS

SAFETY RULES and Specifications for
Mobile or Manufactured

Home Installation .........................Page 2

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

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

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

Operating The Fireplace ....................Page 4

Fuel ...................................................Page 4

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

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

Smoking – Causes And

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

Important Cautions ...........................Page 5

Maintaining Your

Brentwood™ LV Fireplace.............Page 6

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

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

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

Disposing of Ashes ...........................Page 6

Refractory Installation .......................Page 7

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

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

Glass Care - Replacement .................Page 8

Glass Care - Cleaning ........................Page 8

Gasket Replacement ........................Page 8

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

Locating The Brentwood LV Fireplace ..Page 8

Installing The Finishing Kits ..............Page 9

Framing, Facing And Mantel ..............Page 10

Hearth Extension Requirements .......Page 10

Cold Climate Installations ..................Page 10

Fireplace and Framing Dimensions ...Page 11

Insulated Chase Construction ...........Page 12

Nailing Flanges ..................................Page 12

Facing / Mantel ..................................Page 13

Hot Air Ducting Installation ..............Page 14

Gravity Kit .........................................Page 14

Central Forced Air Kit ........................Page 15

Outside Air Kit ..................................Page 16

Chimney System ...............................Page 17

Chimney Installation Notes ...............Page 17

Chimney Installation Instructions ......Page 18

Offset Chimney Installation ...............Page 19

Angled Wall Radiation Shield ............Page 21

Chimney Support Installation ............Page 22

Chimney Chase And

Multiple Terminations......................Page 22

Chimney Adaptor ..............................Page 22

Masonry Application Instructions .....Page 23

Installation Accessories ....................Page 24

Chimney Components Lists ..............Page 25

Specifications ....................................Page 27

Clearances ........................................Page 27

Replacement Parts ............................Page 28

Product Reference Information .........Page 30

THE FIREPLACE

INTRODUCTION

The Brentwood LV 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.

• This fireplace has been tested for CAN/ULC
S610-M87 and ANSI/UL 127 under report
number 3011202. It has also been tested
for EPA 40 C.F.R Part 60, section 60.532(b).
Certificate number 537.

• The Brentwood LV fireplace is not intended for

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

• Lennox Hearth Products wood fireplaces are
designed for use as a supplemental heater.
They are not intended for continuous use as
a primary heat source.

Fireplace Model Brentwood LV

• .Finishing Kit - Required *

...(Order Separately)

- Louver kit
OR

- Clean face obstruction plate kit. Must be
used in conjunction with a gravity vent kit.

*SEE “INSTALLING THE FINISHING KITS”
SECTION FOR THE ASSEMBLY OF THE FIN­ISHING KITS.

• .Black steel door - Required

...(included w/fireplace)

• .Outside air kit - Required

...(included w/fireplace)

• . Blower kit with thermo-disc

... (included w/fireplace)

• 6” diameter chimney - model ASHT+,

S-2100+, HT6000+, HT6103+ or AC manu­factured by Security Chimneys International
only, including:

- Chimney lengths

- Elbows (where necessary)

- Associated components as per these
installation instructions

OPTIONAL EQUIPMENT

• Additional Equipment (optional)

- AC chimney adaptor

(required if using AC chimney)

- AC chimney outside air kit

- Gravity venting system

- Central forced air kit u

- Blower speed control

uNot tested under EPA certification. If in-

stalled, this appliance no longer qualifies
for EPA certification.

3

OPERATING THE FIREPLACE

Fuel

USE SOLID NATURAL WOOD FUEL ONLY. The

Brentwood™ LV fireplace is designed to work
best when fueled with dry seasoned natural
wood only. Hardwoods are preferred to soft­woods since the energy content of wood is
relative to its density. Hardwoods will result in
a longer burning fire and less frequent refueling.
A moisture content of 15% to 20% (seasoned)
is recommended. Wood that has been cut and
split and let to dry under a cover for a period
of one year will usually meet that criteria. 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 in
color than wet wood and will have visible cracks
in the grain on the ends. 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.
Burning unapproved fuel, resulting in excessive
pollutants being emitted, may be prohibited and
subject to a fine or other penalty by the authority
having jurisdiction in your area.

Processed firelogs can be used. Although, do
not poke or stir the logs while they are burning.
Use only firelogs that have been evaluated for
the application of fireplace and refer to firelog
warnings and caution markings on packaging
prior to use.

First Fires

Before using the fireplace make sure to remove
the plastic wrapping and EPA label on door.
Remove any glue residue left by the label
using mild soap.

The first five or six fires should be small fires
of short duration (about 30 to 60 minutes).

This will help cure the refractory bricks. 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.

WARNING

Be careful adding wood fuel to the
fire or handling fireplace tools such
as shovels, tongs or pokers.

WARNING

The bottom refractory can be
cracked by excessive abuse such
as tossing heavy logs onto the
grate or gouging with fireplace
tools. Exercise caution when
adding wood to your fireplace.

Building a Fire
(starting and maintaining a fire)

To start a fire, place several crumpled up balls of
newspaper in the firebox. Place small dry pieces
of kindling on top of the paper, criss-crossing
the kindling so that there are air spaces in be­tween. Keep the fuel far back enough so that air
can get underneath. Open the air controls fully
and light the newspaper. Once the newspaper
and the kindling is well ignited, close the door.
Once the kindling fire is well established, cord
wood can be added (see Primary Air Combus-
tion Control section for proper operation of the
air controls).

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

COMBUSTION CONTROLS

Primary Air and Air Boost Controls

There is no flue damper in the Brentwood LV
fireplace. As is common with air tight stoves,
the combustion air control sets the flow of air
entering the firebox. This allows for a more
precise control of the fire. The combustion air
control is located below the door on the left side.
The main source of air (primary air) entering
the firebox can be diminished by moving the
air combustion control from left to right. The
primary air is fully opened when the air control
is completely moved to the left. The air control
device can also be used to add an extra boost of
air especially during fire start up and reloading
of the unit. Pulling the air combustion control
will induce an air boost at the base of the fire
allowing an easier fire start up. When the fire is
well established, the control can be pushed in
to shut down the air boost allowing for a longer
burn time. The combustion air control should
be in the closed position (primary air and air
boost) when the fireplace is not in use. This
will minimize air leakage up the chimney. The
combustion air control should be opened before
opening the door to minimize the possibility of
back draft coming into the room.

Accelerated Combustion

The maximum heat output for the Brentwood
LV fireplace is achieved by burning with the
door closed and the combustion air opened
and pulled out. By this method, the Brentwood
LV fireplace can produce up to 55,000 BTU of
heat per hour. However, it will be necessary
to reload with wood every one or two hours.
This is the least efficient method of burning the
Brentwood LV fireplace.

Push to Close
Air Boost

Pull to

Open

Air Boost

Slow

Medium

Accelerated

Figure 1

4

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Use caution when firing with the combustion
air control wide open. Only burn cord wood
in this manner. Small dry pieces of softwood
and construction scraps will burn very intensely
using this method and may damage the firebox.

Medium Combustion

This is the recommended mode of operating
the Brentwood™ LV 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 (Figure 1) and pushed in to close
the air boost. The precise setting will depend
on many factors, including chimney length and
the moisture content of the wood.

For instance, a long chimney will necessitate
closing the damper more. To obtain the proper
combustion, close the damper completely, then
open it about 1/4” to 1/2”. Three medium size
pieces of wood should be burning on a bed of
hot coals. The heat output will be approximately
30,000 BTU per hour and the loading time will
be about every 3-4 hours. Softwoods may be
burned using this method but the time will be
substantially reduced.

Slow Combustion

When the air combustion control is completely
closed, the fireplace is in a slow combustion
phase. If the hearth is hot enough, slow combus­tion will not extinguish the fire, but there will be
a noticeable change in the flame pattern. The
flames will be slow and may appear dirty if the
wood is too wet (moisture content of 20% and
more). Do not allow the wood to burn without
flame, since this will produce excessive creosote
in the unit.

Creosote may accumulate on the glass door. This
method of burning should be used only after
operating the Brentwood LV fireplace with the
air control opened (Figure 1) to produce a hot
fire for about an hour or at medium pace for at
least three (3) hours. Slow combustion can be
used at night in order to reduce the heat output
and to prolong the burn. The loading time will
be between 6-8 hours.

REFUELING FOR BEST PERFORMANCE

The Brentwood LV fireplace will operate best if
attention is given to operating the unit with the
damper fully opened
in order to bring the firebox and the chimney
system up to their optimum operating tempera­ture. Combustion efficiency is relative to firebox
temperature. A temperature of 932º F (500º C)
and up, with a visible flame, in the upper part
of the firebox indicates a maximum efficiency.
To obtain this temperature, the fireplace must
be operated with the primary air and air boost
controls fully opened during 10 to 20 minutes
after reloading, depending on the heat and on
the moisture content of the wood.

Once you have reached the desired temperature,
the air boost can be closed and the primary air
set to a medium setting. You know you have
reached the desired temperature when, closing
the primary air control, you can see a flame
at the top of the firebox. The benefit of this
technique will be cleaner glass, less creosoting,
greater efficiency and the most pleasing fire for
your enjoyment. If your fireplace is equipped
with a forced air system, make sure the central
blower is turned off during reloading to avoid
smoking problems.

(figure 1)

after refueling

SMOKING –
CAUSES AND TROUBLESHOOTING

To reduce the likelihood of smoking when open­ing the door, set the combustion air controls to
the left before opening the door. Your fireplace
has been designed and tested to provide smoke
free operation. Occasionally, there may be a
small amount of smoking upon lighting the fire,
until the chimney heats up but this should not
continue. If the fireplace continues to smoke
it is probably for one of the following reasons:

A. Negative pressure in the house -

As the fire burns, air goes up the chimney.

This air must be replaced through leakage
into the house or through the outside air duct.
When operating the Brentwood LV fireplace,
open a nearby window temporarily to check
if there is adequate replacement air supply.

B. Blowers operating (e.g.: range hood) -

These blowers draw air out of the house
and may actually cause a negative pressure
in the house. Turn off all blowers and open
a nearby window to determine if this is the
cause of the problem.

C. Wet wood - Wet or tarred wood will smoulder

and smoke instead of burning properly.

dealer can help you determine if you have
properly seasoned wood for burning.

D. Dirty or blocked chimney - Check to make

sure the chimney is clear and clean.

call a certified chimney sweep or use a
properly sized chimney brush to clean.

E. Chimney not long enough - The minimum

chimney height is twelve (12) feet (3.7 m) not
including the fireplace height. The chimney
must extend at least three (3) feet (915 mm)
above its point of contact with the roof and
at least two (2) feet (610 mm) higher than
any roof or wall within ten (10) feet (3 m) of
it. When installed with offsets, the minimum
chimney height is fifteen (15) feet. Additional
height will increase draft and will decrease
the tendency to smoke.

F. Poor chimney draft - With no fire, there should

be sufficient draft to exhaust cigarette smoke
introduced under the baffle. Chimneys installed
against an outside wall without protection may
generate back draft problems which will cause
start-up problems. To prevent this, open a
nearby window, roll up a piece of paper and
light it. Then, hold it in the upper part of the
firebox to warm up the chimney. Wait until
the draft is sufficient, then start the fire.

G. Blower for forced air kit operating - Make

sure that the blower is in the “off” position
when you open the fireplace door for reloading.

Your

If dirty

IMPORTANT CAUTIONS

A. Do not block the hot air vents to the fireplace

as this will cause the fireplace to overheat.

B. Never use gasoline, gasoline-type lantern

fuel, kerosene, charcoal lighter fluid, or
similar liquids to start or ‘freshen up’ a fire
in this fireplace. Keep all such liquids well
away from the fireplace while it is in use.

C. Do not burn coal. The sulphur in coal will

corrode the firebox.

D. Do not burn driftwood which has been in the

ocean or salt water. The salt will corrode
the firebox and chimney.

E. Do not burn wood in the area in front of the

grate.

F. Do not abuse the unit by burning paper, or

cardboard or construction material such as
pressed wood, plywood or lumber. 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

increased particulate emissions.

as well as

5

MAINTAINING YOUR BRENTWOOD™ LV
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.

The chimney shall be inspected at least twice
a year during the heating season to determine
when a creosote buildup has occurred.

When creosote has accumulated it shall be
removed to reduce the risk of a chimney fire.

When the creosote accumulation is large, a
creosote fire in the chimney can damage the
chimney and overheat the surrounding wood
framing. Creosote formation in a chimney can
be minimized by making sure there is always
visible flame burning, avoid smouldering fires
and by proper refuelling techniques.

Top Baffle Removal Prior to Cleaning The
Chimney

Before starting to clean your chimney, we
recommend that you remove the top baffle to
avoid creosote dust collection at the top of the
baffle. Follow these steps to set the top baffle
out of the way:

1. Remove the side refractory holder. They are
located at the top of the refractory.

2. Lift the front baffle.

3. Slide the back baffle under the front baffle.
You now have access to the chimney.

Dealing With a Chimney Fire

Regular chimney maintenance and inspection
can prevent chimney fires. If you have a chimney
fire, follow these steps:

1. Close the fireplace door and the combustion
air controls.

2. Alert your family of the possible danger.

3. If you require assistance, alert your fire
department.

4. If possible, use a dry chemical fire extin­guisher, baking soda or sand to control the
fire. Do not use water as it may cause a
dangerous steam explosion.

5. Check outside to ensure that sparks and hot
embers coming out of the chimney are not
igniting the roof.

6. Do not use the fireplace again until your
chimney and fireplace have been inspected
by a qualified chimney sweep or a Fire
Department Inspector.

Finish Door Casing Care

Use a glass cleaner and a soft cloth to polish
the casing. Do not use abrasives such as steel
wool, steel pads or an abrasive polish for they
may scratch the casing’s finish.

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.

Figure 2a - Top Baffle Removal

Figure 2b - Top Baffle Removal

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). Do not leave the ashes in the house as they
give off carbon monoxide and other toxic gases.

WARNING

Disposal of Ashes: Ashes should
be placed in a metal container with
a tight fitting lid. The closed con­tainer of ashes should be placed
on a non-combustible floor or on
the ground well away from all
combustible materials, pending
final disposal. If the ashes are
disposed of by burial in soil or
otherwise locally dispersed, they
should be retained in the closed
container until all cinders have
thoroughly cooled.

6

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

REFRACTORY REPLACEMENT

The intense heat of the fire will normally cause
hairline cracks in the refractory. These cracks
can be minimized by proper curing as described
in “First Fires”. They will not normally dimin­ish the effectiveness of the refractory. If large
cracks develop, then the refractory should be
replaced. To replace the refractory bricks, fol­low these steps:

1. Remove the front refractories

2. Remove the bottom refractory

3. Remove the left side refractory

4. Remove the right side refractory

5. Remove the back refractory

6. Remove the front ceramic baffle

7. Remove the rear ceramic baffle
To install the new refractories, follow the above
steps in reverse.

DOOR INSTALLATION

Your fireplaces door has been factory installed
and adjusted.

To remove the door simply unscrew the top
hinge from the door then lift the door (without
touching the trim over the door) to disengage
the male part of the bottom hinge from the
female part.

The door adjustment has been set at the factory.
If the fit is still not perfect, you can adjust the
door using the hinge screws.

DOOR ADJUSTMENT

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

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

7

6

5

4

1. Front Refractories

2. Bottom Refractory

3. Left Side Refractory

4. Right Side Refractory

5. Back Refractory

6. Front Ceramic Baffle

7. Rear Ceramic Baffle

Figure 4

3

WARNINGS

2

1

• Use only a Lennox Hearth Products glass doors, specifically designed
for the Brentwood™ LV fireplace.

•

The fireplace cannot be operated without door. Consult your dealer to
select the correct replacement door.

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

Hinge Screws

Figure 3 - Door Installation

Figure 5

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Gasket Adjustment
Screw

7

GLASS CARE

Glass Replacement

The glass used for the Brentwood™ LV fireplace
is a high temperature ceramic glass (1,400° F /
760° C). If the glass breaks, it must be replaced
with an identical ceramic glass. Tempered glass
or ordinary glass will not withstand the high
temperatures of the Brentwood LV fireplace.
Replacement glass should be purchased from
a Lennox Hearth Products dealer (see “Replace­ment Parts”, Page 28). DO NOT OPERATE THE

UNIT WITH CRACKED OR BROKEN GLASS.

Glass Cleaning

The Brentwood LV fireplace is designed to
keep the glass clean under normal operating
conditions. If the Brentwood LV fireplace is
operated continuously with the combustion air
controls closed, the glass will tend to get dirty
unless the fuel, firebox and glass are maintained
at hot temperatures (see “Refueling For Best
Performance”). To clean the glass, there are a
number of specially designed cleaners. Your
authorized Lennox Hearth Products dealer can
recommend a suitable cleaner which is available
in your area. Regular household glass cleaners
will not clean creosote. Do not use abrasives

such as steel pads, steel wool or oven cleaner
as they will scratch the glass.

DO NOT USE CHEMICAL GLASS CLEANERS
ON PAINTED SURFACES AS IT MAY CAUSE
THE PAINT TO PEEL.

CAUTION : DO NOT ALLOW WINDOW CLEANER
TO GET IN CONTACT WITH DOOR OR PAINT
ON FACADE OR DOOR. ONCE CLOSED,
CONTACT OF GLASS CLEANER WITH THE
FIREPLACE FACADE CAN PROVOKE PAINT
PEELING OFF.

Gasket Replacement

Remove the door from the unit (see Page 7)
and lay it on a clean unabrasive surface. To
replace the gasket, first remove all of the old
gasket and gasket cement. Make sure that the
surface is totally clean before applying new
cement (a high temperature silicone caulking
rated at 500° F [260° C] is suitable) or adhesion
problems may result. Apply gasket cement to
the gasket channel and install the new gasket.
This replacement part is available from your
Lennox Hearth Products dealer in the following
dimensions:

Gasket Length* Dimensions Part No.

Around
Glass

On Door
Frame

74

(1880)

77-3/4
(1975)

3/16” x 1”

(4.8 x 25.4)

5/8 dia.

(15.9)

SR1685J

SR1823G

Table 1 * Inches (millimeters)

FIREPLACE INSTALLATION

Locating The Brentwood LV Fireplace

The best location to install your fireplace is
determined by considering the location of
windows, doors, and the traffic flow in the room
where the fireplace is located, allowing space
in front of the unit for the hearth extension and
the mantel, and taking into consideration the
location of the hot air ducts (optional), outside
air kit and chimney.

If possible, you should choose a location where
the chimney will pass through the house without
cutting floor or roof joists (see fireplace dimen­sions Page 11).

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. Note the floor construction and
consult your local building code to determine
if additional support is needed.

The Brentwood LV fireplace may be installed
directly on the floor or on a raised base (for
proper guidelines, refer to “Hearth Extension
Requirements”) and a minimum of 6’8” (2 m)
measured from the base of the appliance to the
ceiling is required.

When selecting the location, the chimney outlet
position and the direction of the wind are impor­tant factor affecting the chimney performance.
To allow a maximum draft and to reduce wind
turbulence, the chimney must:

• Penetrate the highest part of the roof.

• Be installed as far as possible of roof offsets,
trees or any other obstructions that may
cause wind turbulence and back drafts in
the chimney.

• The least amount of offsets (elbows) pos­sible. Note: A maximum of 2 offsets is
allowed.

Location Recommended

Marginal Location

Wind Direction

Location
Not
Recommended

Location
Not
Recommended

Outside Air Intake
Facing the Wind

Figure 6

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

8

INSTALLING THE FINISHING KITS

The Brentwood™ LV requires the installation
of a finishing kit. Two options are available:

1. Louver kit (part number: LOUVRECF)
OR

2. Clean face kit (part number: CAPPINGCF)

Installing The Louver Kit

The louver kit includes two identical louver
assemblies. The louvers must be oriented so
the angular parts of the grills are towards the
front and the bottom and the cotter pins are
at the bottom.

Insert the top of the louver rods in the top trims
holes. Than insert the bottom of the rods in the
holes at the bottom of the opening. The cotter
pins will rest on the bottom trim in order to
vertically locate the louvers.

Fireplace Face

The gravity kit MUST BE used with the
clean face kit to allow hot air flow that
would normally come out of the top louver.
ANY OTHER INSTALLATION MAY RESULT
IN THE FIREPLACE OVERHEATING AND
POTENTIALLY CAUSE A FIRE.

See Gravity Kit section on Page 14 to install
the gravity vent kit.

Installation Steps:

1. Install the side finishing trim, making sure
to differentiate the left from the right. The
shortest end bend should be towards the
bottom.

2. Install the right side trim. The full length flat
part must rest against the right side face
frame, the center bend must be oriented
towards the outside of the unit and the
bends towards the inside. The end bend on
top must be pushed between the crossing

trim and the right side frame. This can be
difficult because these are close together to
allow a good look when using the louver kit.
The part will be fixed in place when installing
the other parts.

3. Repeat with the left trim.

4. Install the top obstruction plate in the top
opening, oriented so the insulation faces the
inside and the 1/2 inch bend is towards the
outside and the bottom. The part is pressure
installed to keep from using screws that could
interfere with your finishing material. Place
the bottom bend on the lower trim and push
on it to insert the top bend. Push on the part
so the ends lie well on the fireplace face.

5. Install the bottom part the same way. Make
sure to push the part to the bottom to leave
the required air space.

6. (Optional) You can use rivets or sheet metal
screws on all four (4) corners to secure the
installation.

2

1

3

2

Figure 7

Installing The Clean Face Kit

The clean face kit includes four parts. Two
trims, left and right, are used to cover the edge
of the finishing material on the sides, and two
obstruction plates to cover the top and bottom
openings allowing to install the finishing material
closer to the door.

WARNING: The bottom obstruction plate
is designed to leave an opening area for
the convection air to circulate and cool
your fireplace. NEVER BLOCK THIS AIR
SPACE TO AVOID OVERHEATING THE
FIREPLACE AND POTENTIALLY CAUSE A
FIRE IN YOUR HOME.

1

1

3

Figure 8

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

9