Monessen Hearth HWB600 User manual

HWB600/HWB600HB MODELS
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
FOR RESIDENTIAL INSTALLATION
THIS FIREPLACE IS U.L. LISTED FOR USE WITH
THE "L" SERIES CHIMNEY SYSTEM COMPONENTS.
53D9035. Rev 1 03/03
ONLY UNVENTED GAS LOG SETS WHICH HAVE BEEN FOUND TO COMPLY WITH THE STANDARD FOR UNVENTED ROOM
HEATER, ANSI/IAS/AGA Z21.11.2, ARE TO BE INSTALLED IN THIS FIREPLACE.
WHEN AN APPROVED ANSI/ISA/AGA Z21.11.2 UNVENTED ROOM HEATER IS INSTALLED IN THIS FIREPLACE, AN H2853
CANOPY MUST ALSO BE INSTALLED.
WARNING: DO NOT OPERATE AN UNVENTED GAS LOG SET IN THIS FIREPLACE WITH THE CHIMNEY REMOVED.

1
You have chosen the finest wood burning fireplace available. Your fireplace has been designed for
years of heating and viewing enjoyment. Please take time to read this entire manual before installing
or operating your fireplace.
LISTING AND CODE APPROVALS
The instructions contained in this manual provide the information necessary to install this fireplace in accordance
with Underwriter’s Laboratories requirements and in compliance with the National Fire Protection Association
Standard No. 211. Some codes may require the fireplace and chimney be electrically grounded. Before
beginning the installation, you should check with local building officials to obtain required permits and assure
compliance with local regulations and coded. If you encounter problems with code requirements, contact your
dealer for assistance.
These Fireplace models are listed by Underwriters Laboratories, Inc. to U.L. 127-standard for factory-built
fireplaces. The design of this fireplace and these instructions complied with applicable safety standard for a
factory built fireplace in effect at the time the fireplace was manufactured. You should be aware, however, that
failure to install, operate, and maintain this or any other factory built fireplace properly can result in a house fire
or other occurrences that could cause deaths, injuries, and property damages. It is very important that the
persons installing and/or supervising the installation of this fireplace have appropriate skills in using the tools
and techniques required; and reading and comprehension skills sufficient to read and follow these instructions.
These instructions contain warnings, cautions, and notes to emphasize important safety information. To assure
that safe and satisfactory service is received from this fireplace, please read the following special notices and
all the contents of this manual.
TABLE OF CONTENTS
Listing and Code Approvals................................................................................................................1
Important Information..........................................................................................................................2
Operation Guidelines.........................................................................................................................3
Clearances .................................................................................................................4-6
Fireplace Location ................................................................................................................7
Installation Preparation ........................................................................................................8-9
Floor Protection . ...............................................................................................................10-11
Fireplace Components ...................................................................................................12
Fireplace Installation .....................................................................................................13
Chimney Installation .................................................................................................................14-15
Chimney Offset Installation ............................................................................................16-17
Chimney Cap Installation ........................................................................................................18-19
Chimney Cap Chase Installation ......................................................................................................20
Outside Combustion Air Precautions and Recommendations ...............................................21-22
Combustion Air Assembly ................................................................................................................23
Gas Appliance Installation .......................................................................................................24-25
Trim and Door Installation ...............................................................................................................26
Fireplace Operation ................................................................................................................27-28
Maintenance and Safety .........................................................................................................29-31
Repair Parts Diagram and List ................................................. .............................................32-33
Warranty...................................................................................................................................34-35
CONGRATULATIONS!
53D9035. Rev 1 03/03

1. Read these instructions entirely before beginning any part of the installation. Save these instructions for
any future repairs.
2. Use these instructions as a guide during the installation of the fireplace.
3. Be sure these instructions become the property of and are reviewed by all future users of this fireplace to
encourage proper operation and maintenance.
4. All the parts used with this fireplace system must be installed in accordance with these installation instructions.
Failure to do so may be hazardous and will void the warranty.
5. This fireplace and accessories should not be altered in any way that is not specifically recommended in
this manual.
6. Refer to your local building code for local requirements pertaining to installation of factory-built fireplaces.
These fireplaces are intended for installation and use according to standard NFPA NO.211 of the National
Fire Protection Association.
7. This fireplace must not be installed with a masonry flue.
8. This fireplace and chimney should not be used for venting a wood or coal burning heater or fireplace insert.
Warning: Do not install a separate solid fuel insert or gas fireplace insert into this fireplace and chimney
system without written authorization.
9. Warning: Do not pack required air spaces with combustible material or insulation not specifically
recommended for use in such areas.
INTENDED PRODUCT USAGE
The fireplace is designed to sit directly on a combustible floor. The fireplace must be installed with clearances
to combustible building materials specified in this manual. Only parts manufactured by Monessen Hearth
Systems and labeled for use with the fireplace should be used in the installation of this fireplace except for
special roof flashings that may be fabricated locally. The use of improper parts in the installation can be
hazardous and voids the warranty offered by Monessen Hearth Systems.
This fireplace is designed to burn wood. This fireplace is not designed to burn coal, unplumbed liquid fuels,
unplumbed gaseous fuels or household refuse. Any attempt to burn these fuels in the fireplace can be hazardous.
Failure to heed usuage warnings may cause a fire hazard and will void the Warranty. This fireplace is intended
for supplemental heating only and is not intended for use as a primary heating system. For use with Solid
Wood Fuel, UL Classified Processed Solid Fuel Fire Logs, or Certified Decorative Gas Appliance.
“Do not use a fireplace insert or other product not specified for use with this fireplace.”
IMPROPER INSTALLATION
Improper installation or use of this fireplace will void the warranty and can cause:
1. Damage to the fireplace from overheating.
2. Hazardous temperatures to develop on combustible materials adjacent to the fireplace or chimney.
3. The emission of smoke, sparks or hazardous gases into the dwelling.
4. Leakage of rain water into the dwelling.
2
2
IMPORTANT INFORMATION
53D9035. Rev 1 03/03

5
3
OPERATION GUIDELINES
When a AK4 combustion air assembly and a combustion air duct are attached to the connecting point on the
left of the fireplace, combustion air may enter the firebox through a dampered opening behind the left side
panel. This feature is designed for your benefit to reduce the room air used for combustion and to prevent
excessive loss of heat from the room. When the fireplace is in use, this damper should be open. When the
fireplace is not in use, the damper should be closed to prevent cold air from entering the firebox. The combustion
air damper is open when the lever, located on the left side of the firebox near the top of the left firebrick, is up
and closed when the lever is down.
Outside air for combustion is optional unless required by federal, state or local building codes. See the section
of this manual providing the instructions for installation of the combustion air assembly. The design of the
fireplace allows the routing of the combustion air duct up, down, or horizontally to obtain the outside combustion
air. This permits flexibility in planning your installation. See Figure 25 for typical installation methods. Review
the precautions and recommendations in this manual pertaining to outside combustion air installation.
Glass doors should be installed to receive the maximum benefit from your fireplace. For large fires, the
maximum heating benefit from the fireplace will be obtained with the doors open due to the high amount of
radiant heat being emitted out of the front opening of the fireplace. With a small fire, or before retiring in the
evenings, it is best to operate the fireplace with the doors closed to prevent excessive room air form being
drawn up the chimney. When the doors are open, the mesh screens should be closed to help keep burning
embers from popping out of the firebox.
The fireplace should also be equipped with a flue damper, which must be open when the fireplace is in use.
The flue damper control lever is located inside the fireplace. The counterweighted damper is operated by
simply pushing up to open or pulling down to close the damper. When the fireplace is not in use, the damper
should be closed to prevent cold air form entering the chimney as well as preventing warm air in the room from
escaping up the chimney.
NOTE: It is normal for a small amount of smoke to be released from the upper portion of the fireplace the first
few times you use your new fireplace. This results from an oil residue on the metal. Open a door or window
to allow the smoke to escape.
The grate included with this fireplace helps to appropriately locate and contain the burning wood. Failure to
use this grate may cause overheating of parts of the fireplace and allow large pieces of burning wood to roll
forward out of the firebox. If the grate becomes warped or damaged, it must be replaced with grate number
052874 only.
WARNING: Fireplaces equipped with doors should be operated only with the doors fully open or doors fully
closed. If doors are left partly open, gas and flame may be drawn out of the fireplace opening, creating risks
of both fire and smoke.
All fireplace chimneys are in direct contact with cold air on the exterior of the structure. Consequently, when
the fireplace is not in use, cold air can fall down the chimney of the fireplace to cool off the fireplace chase.
Therefore, the fireplace chase must be insulated to minimize the risk of cold air infiltration to the home. Even
if the fireplace chase is adequately insulated, this cannot completely ensure that cold air infiltration into the
structure will be eliminated. Cold air infiltration is a possibility with any fireplace or device that freely
communicates with the air on the outside of the structure. Today’s homes are more energy-efficient and,
therefore, better insulated and tightly constructed. Unfortunately, when air is removed from the house, as by a
bathroom fan, or consumed by a furnace, additional air is needed to replace the air consumed. Unless the
additional air is supplied, this can cause a negative pressure in the home. When this happens, the house will
draw in outside air form the cracks in the windows, down the fireplace flue or other locations of air leakage in
the home. Because cold air infiltration may be unavoidable in some structures, Monessen Hearth Systems is
not responsible for heat loss or air infiltration through or around the fireplace.
53D9035. Rev 1 03/03

6
4
CLEARANCES
53D9035. Rev 1 03/03

CLEARANCES
5
53D9035. Rev 1 03/03

6
CLEARANCES
53D9035. Rev 1 03/03

FIREPLACE LOCATION
CAUTION: Do not install fireplace over carpeting.
This fireplace does not weigh more than large pieces of furniture and can normally be located near a load
bearing wall without requiring additional foundations or supports. If however, the fireplace is to be trimmed
with a heavy stone or brick facing and hearth extension, be sure the supporting structure is adequate.
Figures 3 and 4 provide dimensional details of the fireplace, required spacing to combustible walls, and some
suggested fireplace locations. When selecting a location, choose one that is away from frequently opened
doors, central heat outlets or returns, or other places where air movements may disturb the airflow around the
fireplace. Air turbulence near the fireplace may cause smoke to spill out of the fireplace opening.
7
53D9035. Rev 1 03/03

8' 0"
LEVEL
SOLID
SURFACE
FIRESTOP SPACER
SEE NOTES

JOIST INSULATE SAME
AS CEILING
NOTES:
1. MODEL LF-FS-2 FIRESTOP 
SPACER MUST BE USED.
2. LOCAL CODES MAY NOT REQUIRE
FIRE STOPPING AT THE CEILING LEVEL
FOR CHASE INSTALLATIONS, BUT IT IS
RECOMMENDED FOR SAFETY AND 
REDUCING HEAT LOSS.
3. DO NOT INSULATE THE CHASE WITH 
BLOWN OR FILL TYPE INSULATION.
INSULATION SHOULD ONLY CONTACT
THE FIREPLACE AT POINTS WHERE 
THE FIREPLACE WOULD NORMALLY BE 
CONTACTED BY FRAMING MATERIALS 
OUTSIDE BASE
INSULATION
(THERMAL BARRIERS)
SOLID CONTINUOUS
SOLID CONTINUOUS
SURFACE
INSULATE OUTSIDE
INSULATE OUTSIDE 
WALLS OF CHASE
CHIMNEY SECTIONS
CHIMNEY SECTIONS
"L" SERIES
LCLF FLAT CHASE 
TOP FLASHING
LCL TELESCOPING
CHIMNEY CAP
Survey the planned location for the fireplace for overhead plumbing or electrical wires, etc., that might complicate
the installation or endanger persons installing or cleaning the chimney. Avoid a location where the chimney
cap will be near abrupt changes in the roof shape, nearby wall or embankments, under or near trees or above
the roof of a single story wing of a two story building as shown by Figure 7. All these conditions can cause
turbulence or pressure conditions that can cause poor chimney draft and smoke spillage from the fireplace
opening. Elbows may be used to offset the chimney to avoid obstructions or to locate the chimney cap in a
preferred location. Refer to the sections of this manual pertaining to chimney offsets for instructions on proper
elbow use. Poor installation or location of the chimney cap and/or components can cause wind blown rain to
enter the chimney.
Be sure the selected location will allow a 17" square combustible material-free space for the chimney to pass
through. If the chimney is to pass through living or storage spaces, be sure there is adequate space to enclose
the chimney to avoid personal contact with, or damage to, the chimney. If the fireplace is to be installed on an
outside wall, the surrounding walls (chase) should be constructed and insulated as shown by Figure 5. Failure
to insulate the fireplace form outside temperatures will cause heat loss through and around the fireplace.
INSTALLATION PREPARATION
8
FIGURE 5
53D9035. Rev 1 03/03

MULTIPLE STORY INSTALLATION
MULTIPLE STORY INSTALLATION
ATTIC SPACE
ATTIC SPACE
SINGLE STORY INSTALLATION WITH
SINGLE STORY INSTALLATION WITH
POOR 
POOR 
LOCATION
LOCATION
PREFERRED 
PREFERRED 
LOCATION
LOCATION
2" MIN. CLEARANCE 
2" MIN. CLEARANCE 
TO COMBUSTIBLES
TO COMBUSTIBLES
"L" SERIES CHIMNEY COMPONENTS
"L" SERIES CHIMNEY COMPONENTS
FIRESTOP SPACER
FIRESTOP SPACER
LF-FS-2 (2" AIR SPACE
LF-FS-2 (2" AIR SPACE
CLEARANCE TO 
CLEARANCE TO 
COMBUSTIBLES
COMBUSTIBLES
17" SQUARE
17" SQUARE
OPENING
OPENING
IN JOIST
IN JOIST

15 FT MIN.
15 FT MIN.
SEE TABLE 1 FOR
SEE TABLE 1 FOR
ROOF OPENING
ROOF OPENING
SIZE
SIZE
3 FT. MIN. OR 2' ABOVE
3 FT. MIN. OR 2' ABOVE
ANY POINT WITHIN 10'
ANY POINT WITHIN 10'
ATTIC SPACE
ATTIC SPACE
FLUE OUTLET HEIGHT
FLUE OUTLET HEIGHT
STORM COLLAR
STORM COLLAR
FLASHING
FLASHING
(612 OR 1212)
(612 OR 1212)
LC CHIMNEY CAP
LC CHIMNEY CAP
FIRESTOP SPACER
FIRESTOP SPACER
LF-FS-2 (2" AIR SPACE
LF-FS-2 (2" AIR SPACE
CLEARANCE TO 
CLEARANCE TO 
COMBUSTIBLES)
COMBUSTIBLES)
17" SQUARE
17" SQUARE
OPENING IN
OPENING IN
JOIST
JOIST
17" SQUARE
17" SQUARE
OPENING IN
OPENING IN
JOIST
JOIST
(612 OR 1212)
(612 OR 1212)
FLUE OUTLET HEIGHT
FLUE OUTLET HEIGHT
2" CLEARANCE TO
2" CLEARANCE TO
COMBUSTIBLES (MIN.)
COMBUSTIBLES (MIN.)
3 FT. MIN.
3 FT. MIN.
HEIGHT - 86 FT. CHIMNEY
HEIGHT - 86 FT. CHIMNEY
MAX. INSTALLATION
MAX. INSTALLATION
SECOND FLOOR AREA
SECOND FLOOR AREA
FIRST FLOOR AREA
FIRST FLOOR AREA
THIRD FLOOR AREA
THIRD FLOOR AREA
ATTIC SPACE
ATTIC SPACE
MODEL LC
MODEL LC
CHIMNEY CAP
CHIMNEY CAP
STORM COLLAR
STORM COLLAR
(INCLUDED WITH CAP)
(INCLUDED WITH CAP)
FLASHING
FLASHING
17" SQUARE
17" SQUARE
OPENING IN
OPENING IN
JOIST
JOIST
SEE TABLE 1 FOR
SEE TABLE 1 FOR
ROOF OPENING SIZE
ROOF OPENING SIZE
FIRESTOP SPACER
FIRESTOP SPACER
LF-FS-2 (2" AIR SPACE 
LF-FS-2 (2" AIR SPACE 
CLEARANCE TO 
CLEARANCE TO 
COMBUSTIBLES
COMBUSTIBLES
FIRESTOP SPACER
FIRESTOP SPACER
LF-FS-2 (2" AIR SPACE
LF-FS-2 (2" AIR SPACE
CLEARANCE TO 
CLEARANCE TO 
COMBUSTIBLES)
COMBUSTIBLES)
INSTALLATION PREPARATION
FIGURE 6
9
FIGURE 7
FIGURE 8
53D9035. Rev 1 03/03

10
FLOOR PROTECTION
If this fireplace is installed on a combustible floor, the floor area 20 inches in front of, and 12 inches either side
of the fireplace opening must be protected by an insulating noncombustible hearth extension. This hearth
extension may be either minimum 6-inch thick stone or brick as shown by Figure 9, an H2068 hearth extension
kit or a locally constructed equivalent to the H2068.
The H2068 hearth extension kit consists of sufficient insulation board to cover the 20" x 68" floor area with ˚
inch layer of insulation. A 20" x 68" piece of galvanized steel is included in the kit to cover the insulation before
a finishing layer of noncombustible material of stone, brick, tile, etc., is applied to finish the hearth extension.
The insulation used in the H2068 hearth extension has a thermal conductivity (K factor) of 0.43. If you do
construct a hearth extension equivalent to the H2068, be sure the insulation you use has enough compressive
strength to support the weight of the covering materials and persons standing on it, and insulating qualities
equal to or better than the 1/2" covering provided by the H2068.
53D9035. Rev 1 03/03

52 7/8"
52 7/8"
27"
27"
53 1/8"
53 1/8"
68"
68"
20"
20"
FLOOR
FLOOR
COMBUSTIBLE
COMBUSTIBLE
26 3/8"
26 3/8"
WARNING: THE HEARTH EXTENSION AND THE 
WARNING: THE HEARTH EXTENSION AND THE 
METAL SAFETY STRIP SHOULD BE INSTALLED 
METAL SAFETY STRIP SHOULD BE INSTALLED 
ONLY IN A HORIZONTAL RELATIONSHIP TO THE
ONLY IN A HORIZONTAL RELATIONSHIP TO THE
FIREPLACE, AS ILLUSTRATED.
FIREPLACE, AS ILLUSTRATED.
METAL SAFETY STRIP
METAL SAFETY STRIP
HEARTHPROTECTOR
HEARTH PROTECTOR
METAL
METAL
SAFETY STRIP
SAFETY STRIP
HEARTH EXTENSIONS
HEARTH EXTENSIONS
FLOOR LINE WITH RAISED HEARTH
FLOOR LINE WITH RAISED HEARTH
TOP OF 
TOP OF 
RAISED HEARTH
RAISED HEARTH
12" (MIN)
12" (MIN)
20"
20"
(MIN)
(MIN)
12" (MIN)
12" (MIN)
FLOOR PROTECTION
The ability of insulating material to retard the transfer of heat may be expressed as either Thermal Conduc-
tance (C), Thermal Conductivity (K), or Thermal Resistance (R). The mathematical relationship of these
values and the formulas for converting one value to another is as follows:
C=K divided by the material thickness
(Example C = .43 divided by 1/2 (.50)
C = .86)
K = C multiplies by the material thickness
(Example K = .86 multiplied by 1/2 (.50)
K = .43)
R= The material thickness divided by K
(Example R = 1/2 (.50) divided by .43
R = 1.16)
With either type hearth extension minor shifting of the supporting floor or expansion and contraction may
eventually cause a crack to develop between the hearth extension and the face of the fireplace. To help
prevent the crack from developing, the hearth extension materials must be firmly fastened in place. Wall ties
should be screwed to the face of the fireplace and imbedded in the mortar joints of brick, stone, or other non-
combustible materials. The metal safety strip packed with the fireplace must be placed beneath the fireplace
and extended under the hearth extension or into a mortar joint of the hearth extension as shown by Figures 9
and 11. In the event a crack does eventually develop, the metal safety strip will serve as a barrier to prevent
sparks or embers from falling from the fireplace onto combustible flooring materials.
11
FIGURE 11
53D9035. Rev 1 03/03

12
FIREPLACE COMPONENTS
53D9035. Rev 1 03/03

13
FIREPLACE INSTALLATION
LOCATION SELECTION
Unpack and check the fireplace and chimney for damage. If any items have been damaged, report this to your
dealer. Before beginning the installation, be sure you have the proper parts in sufficient quantity. Refer to
Figure 26 for proper identification of parts.
Do not substitute parts. Use only parts listed for use with the Model HWB600/HWB600HB fireplaces.
FIREPLACE INSTALLATION
1. Refer to Figure 1 for an example of a typical installation of the fireplace components.
2. Be sure the location of the fireplace will provide the required clearances indicated by Figures 2, & 3 and the
minimum chimney air space clearance to combustibles of two inches.
3. Set the fireplace in the desired location and be sure it is securely supported and leveled. Check the face
of the fireplace with a carpenter’s level and if it is not plumb; correct it by placing shims under the edges of
the fireplace.
4. Block in the fireplace to prevent any shifting of the firebox. Secure the fireplace with nails or screws
through the flanges located on each side of the fireplace. Do not enclose the fireplace until the combustion
air duct and chimney pipes are installed.
NOTE: Some local codes may require electrically grounding the fireplace and chimney.
CHIMNEY INSTALLATION
In order to assure safe and satisfactory performance of the fireplace, it is very important to properly install the
chimney. This is an important part of the installation and the sections of this manual pertaining to chimney
installation should be reviewed very thoroughly.
For your safety, some of the important things to remember in regard to chimneys are listed below:
1. Use only parts and accessories labeled for use with this fireplace.
2. Use only undamaged parts and accessories.
3. Enclose the chimney where it passes through the living spaces to prevent contact with and possible dam-
age to the chimney.
4. Install firestop spacers at each ceiling level.
5. Install the proper chimney cap or chimney housing on the chimney to prevent the entry of rain and debris
into the chimney and to assure the proper venting of smoke.
6. Do not use more than four elbows in the chimney.
NOTE: To select the proper chimney height, refer to Figure 1. The flue outlet must be a minimum of three feet
above the highest point where the chimney penetrates the roof and a minimum of two feet above all portions
of the building within ten feet. If the chimney is to include elbows to offset the chimney, refer to the Chimney
Offset and Cap Installation section of this manual. There must be at least two inches air space between all
sections of the chimney and combustible materials between floors.
53D9035. Rev 1 03/03

CHIMNEY INSTALLATION
14
1. Lay out, cut and frame openings through all ceilings and the roof at the point where the chimney will pass
through. Unless the chimney is to be offset, the point where the center line of the chimney will pass
through the ceiling and roof can be determined with a plumb line as shown by Figure 15. The fireplace
should be located in the planned installation position. After the center line is established and a nail is
driven to mark the point, the opening can be cut if you are satisfied with the chimney location relative to
ceiling and roof joists and/or any other obstructions. The roof opening center line should be marked by
driving a nail through the roof from underneath that will penetrate the roof and can be located from the
rooftop. If the chimney is to penetrate a pitched roof, the hole in the roof must be rectangular instead of
square and should be sized according to Table1.
2. Install the firestop spacer as required from beneath the ceiling unless the space above is attic space. In an
attic, the firestop spacer should be installed at the floor level of the attic. You must have joists or headers
on all four sides of the spacer and use a minimum of four 8-penney nails to secure the spacer.
3. To install the “L” series chimney sections, insert the male end of the flue, the smallest diameter pipe, into
the flue outlet of the fireplace and press down until the snap locks engage. Continue the process, adding
the chimney sections on top of each other until the chimney is at least six inches above the roof opening on
all sided. As the chimney sections are installed, check each joint to make sure it is properly locked to the
previous section. If additional strength of the outer pipe joints is desired, you may use two or three sheet
metal screws placed through the area where the outer pipes overlap one another. To install these screws,
drill a 1/8-inch diameter hole through the chimney sections, taking care not to penetrate the inner flue pipe.
Warning: Be very careful when drilling the holes into the outer pipe. The drill must not penetrate the inner
stainless steel pipe.
NOTE: If you intend to have a total fireplace installation of more that 30 feet you must use chimney support
model LCS at or below 30 feet to support the weight of additional chimney pipe.
To install the chimney support, place the crimped end of the flue and outlet air duct portions into the last section
of chimney pipe. Push down until the outside or inlet air duct of the chimney support overlaps and snap locks
the chimney support into the chimney section.
Nail the support straps tightly to a building frame member or ceiling joist as shown by Figure 16. You must use
at least two 8-penney nails per strap.
NOTE: 
NOTE: 
FLUE OUTLET SHOULD BE TWO FEET ABOVE ALL PORTIONS OF THE BUILDING
FLUE OUTLET SHOULD BE TWO FEET ABOVE ALL PORTIONS OF THE BUILDING
WITHIN TEN FEET AS SHOWN IN THE ILLUSTRATION. THE CHIMNEY MUST NOT
WITHIN TEN FEET AS SHOWN IN THE ILLUSTRATION. THE CHIMNEY MUST NOT
EXTEND MORE THAN 90 INCHES ABOVE THE ROOF WITHOUT ADDITIONAL SUPPORT.
EXTEND MORE THAN 90 INCHES ABOVE THE ROOF WITHOUT ADDITIONAL SUPPORT.
24" MIN.
24" MIN.
36"
36"
24" MIN.
24" MIN.
36"
36"
10'
10'
10'
10'
FIGURE 14
53D9035. Rev 1 03/03

IMAGINARY
CENTER POINT
ACTUAL
CENTER POINT
CENTERLINE 
OF CHIMNEY
PLUMB BOB
PLUMB LINE
TABLE 1
TABLE 1
MINIMUM REQUIRED ROOF OPENING
MINIMUM REQUIRED ROOF OPENING
MINIMUM FRAMED OPENING
MINIMUM FRAMED OPENING
"L" SERIES 
"L" SERIES 
DOUBLEWALL CHIMNEY
DOUBLEWALL CHIMNEY

17" x 17"
17" x 17" 1/8"
17" x 17" 1/4"
17" x 17" 1/2"
17" x 17" 3/4"
17" x 18" 1/4"
17" x 18" 3/4"
17" x 19" 3/8"
17" x 20"
17" x 20" 5/8"
17" x 21" 3/8"
17" x 22" 1/4"
17" x 23"


ROOF PITCH
ROOF PITCH

0/12
1 12
2/12
3 12
4/12
5 12
6/12
7 12 
8/12
9 12
10/12
11 12 
12 12
INSTALLATION OF FIRESTOP-SPACER AT FLOOR LEVELS
INSTALLATION OF FIRESTOP-SPACER AT FLOOR LEVELS
INSTALLATION OF FIRESTOP-SPACER AT ATTIC LEVEL
INSTALLATION OF FIRESTOP-SPACER AT ATTIC LEVEL
FLUE PIPE
FLUE PIPE
FIRESTOP SPACER
FLOOR JOIST
HEADER
CHIMNEY SECTION
INLET AIR PIPE
FIRESTOP SPACER
CHIMNEY SECTION
CEILING JOIST
INLET AIR PIPE
HEADER
OUTER PIPE
FLUE
SUPPORT STRAPS 
FASTEN SECURELY
FIRESTOP
CHIMNEY 
SUPPORT
SNAP LOCK CHIMNEY
SUPPORT SECURELY 
TO LOWER PIPES 
BEFORE FASTENING
SUPPORT STRAPS
15
CHIMNEY INSTALLATION
FIGURE 15
FIGURE 16
FIGURE 17
53D9035. Rev 1 03/03

CHIMNEY OFFSET INSTALLATION
16
ELBOW INSTALLATION
The following are important points that should be observed when installing elbows on the fireplace:
1. The support straps of all elbows not installed directly on top of the fireplace should be nailed securely to the
surrounding structure. This allows the support strap to carry the weight of the chimney above the elbow
and prevents this weight from breaking the elbow or chimney sections apart.
2. Elbows should not be used in any combination that inclines the chimney more than 30 degrees from
vertical.
3. The limitations on the quantity of elbows per chimney are as follows: If the total height of the fireplace and
chimney is—12' - 2" or more — two elbows may be used in the chimney. 21' - 0" or more — four elbows
may be used in the chimney.
4. The inclined portions of chimneys that pass through living spaces likely to be used for storage should be
enclosed to avoid contact with and possible damage to the chimney. The minimum air space of two inches
between the chimney and enclosing materials must be maintained.
5. The length of the inclined portion of chimney between elbows must not exceed 6 feet when unsupported or
20 feet if the chimney is supported at six-foot intervals with support such as metal support straps.
6. When enclosing the elbows and inclined portions of the chimney, enclosing materials must be installed
vertically to maintain the required two-inch minimum air space clearance to the chimney at the extremities
of the offset. It is recommended that enclosing material not follow the inclined portions of the chimney.
OFFSET INSTALLATION SEQUENCE
1. Determine the location and amount of offset required, then select the combinations of chimney sections
and elbows required from the offset chart. Refer to Page 19.
2. Install the first LE30 elbow by placing the extended flue into the mating part of the fireplace or chimney
section. Push down until the outside or inlet air duct of the elbow overlaps and the snaps lock the elbow
into the fireplace or chimney section.
3. Nail the support straps to the framing member with a minimum of two 8-penny nails per strap.
4. Install the sections of pipe between elbows until the proper number of chimney sections have been installed.
5. Install the second elbow to return the run of the chimney to vertical.
6. Nail the support straps of the second elbow to a building frame member.
7. Continue installing the vertical portion of the chimney.
NOTE: If the inclined portion of the chimney passes through a floor or ceiling, an LF-FS-30 firestop spacer
should be installed to provide the firestop and support required. Be sure proper spacing in maintained between
the chimney and combustibles.
FLUE PIPE
INLET AIR PIPE
30˚ ELBOW
ALL FOUR SUPPORT
STRAPS MUST BE NAILED
ON TO FRAMING MEMBER
AROUND THE ELBOW WITH 
A MINIMUM OF TWO (2)
8-PENNY NAILS PER STRAP
NOTE:
ALTHOUGH BOTH HALVES OF 
THE ELBOW SET MAY HAVE
TIE STRAPS, ONLY THE TOP
HALF MUST BE SECURED. THE
BOTTOM ELBOW HALF IS NOT
REQUIRED TO BE SECURED FOR
REQUIRED TO BE SECURED FOR
ADDED STABILIZATION OF PIPE
FIGURE 18
53D9035. Rev 1 03/03

CHIMNEY OFFSET AND CAP INSTALLATION
17
CHIMNEY HOUSING
INSTALL ROUND CHIMNEY CAP OR
CONTINUE CHIMNEY TO PROPER HEIGHT AND
STORM CO
LSTORM COLLAR
FLASH
FLASHING ROOF
FIRESTOP SPACER AS REQUIRED
HEIGHT EXCEEDS 24FT. 2 IN.
WHEN TOTAL INSTALLATION
TWO ELBOWS MAY BE USED
NOTE:
FASTEN SUPPORT STRAPS SECURELY
USE OF LF-FS-2 FI
RUSE OF LF-FS-2 FIRESTOP
COMBUSTIBLES
COMBUSTIBLES WITH
CLEARANCE T
OCLEARANCE TO
2" MIN. AIR SPA
2" MIN. AIR SPACE
L
C
IN ACCESSIBLE AREAS.
IN ACCESSIBLE AREAS.
VERTICAL CHIMNEY
VERTICAL CHIMNEY
ENCLOSURE
ENCLOSURE
CHIMNEY MUST BE ENCLOSE
DCHIMNEY MUST BE ENCLOSED
C
L
VERTICAL CHIMNEY
VERTICAL CHIMNEY
ENCLOSURE
ENCLOSURE
SUPPORT STRAPS
SUPPORT STRAPS
NOT TO PENETRATE
NOT TO PENETRATE
FIRESTOP
FIRESTOP
FIRESTOP SPACER 2" MIN. AIR SPACE
FIRESTOP SPACER 2" MIN. AIR SPACE
CLEARANCE AT JOIST. ("L" SERIES CHIM
NCLEARANCE AT JOIST. ("L" SERIES CHIMNEY)
CONTINUE CHIMNEY THROUGH ROOF AN
CONTINUE CHIMNEY THROUGH ROOF AND
INSTALL ROUND CHIMNEY CAP OR 
INSTALL ROUND CHIMNEY CAP OR 
CHIMNEY HOUSING
CHIMNEY HOUSING
FIRESTOP SPACER
FIRESTOP SPACER
DIAGONAL
DIAGONAL
CHIMNEY 
CHIMNEY 
ENCLOSURE
ENCLOSURE
RISE
RISE
C
L
FIRESTOP 
FIRESTOP 
SPACER
SPACER
2" AIR SPACE
2" AIR SPACE
CLEARANCE TO
CLEARANCE TO
COMBUSTIBLES
COMBUSTIBLES
SUPPORT STRAPS
SUPPORT STRAPS
DIAGONAL CHIMNEY
DIAGONAL CHIMNEY
ENCLOSURE
ENCLOSURE
OFFSET MAX. (10')
OFFSET MAX. (10')
DIAGONAL CHIMNEY ENCLOSURE
DIAGONAL CHIMNEY ENCLOSURE
FASTEN ALL SUPPORT
FASTEN ALL SUPPORT
STRAPS SECURELY
STRAPS SECURELY
VERTICAL CHIMNEY ENCLOSURE
VERTICAL CHIMNEY ENCLOSURE
ACCEPTABLE.
ACCEPTABLE.
RECOMMENDED.
RECOMMENDED.
EXCEEDS 24FT.
EXCEEDS 24FT.
PER FIREPLACE.
PER FIREPLACE.
NOTE: FOUR ELBOWS MAY
NOTE: FOUR ELBOWS MAY
BE USED WHEN TOTAL
BE USED WHEN TOTAL
INSTALLATION HEIGHT
INSTALLATION HEIGHT
MAXIMUM 4 ELBOWS
MAXIMUM 4 ELBOWS
LF-FS-30
LF-FS-30
CENTERLINE OF
CENTERLINE OF
CHIMNEY
CHIMNEY
17
17
7 1/4
7 1/4
30˚
22 1/16
22 1/16
NOTE: LCL CHIMNEY CAP IS SAME AS LC WITH 
THE EXCEPTION OF A LONGER TELESCOPING 
PIPE WHICH MAY BE NEEDED FOR SPECIAL
INSTALLATIONS SUCH AS CHASE INSTALLATIONS.
HOLD 13" DIAMETER
(OUTSIDE PIPE)
VERTICAL
SCRIBE LINE
AT BOTTOM
* OR 2" ABOVE ANY POINT WITHIN 10'
APPLY MASTIC HERE
STORM COLLAR
FLASHING
*36"
MODEL LC
CHIMNEY CAP
18 1/2"
7 9/16
7 9/16
FIGURE 19
53D9035. Rev 1 03/03

CHIMNEY CAP INSTALLATION
18
MODEL LC CHIMNEY CAP
SPECIAL NOTE: The proper height as previously explained is important to assure proper draft and safety. The
chimney cap extends the flue outlet four inches above the top of the last section of chimney. This should be
kept in mind when determining the proper height for the chimney. The chimney should not be extended more
than 90 inches above the supporting roof structure without additional support. In the case of an “A” frame type
construction or other steep pitch roofs that require more than 90 inches of chimney above the roof, a support
should be attached to the chimney at the 90 inch level that is strong enough to support a wind load of 3-1/8
pounds for each inch the chimney extends above 90 inches. The flue outlet must be a minimum of three feet
above the point where in penetrates the roof.
CAUTION:Be careful to avoid electrical shock hazard when contacting wires to the metal chimney components.
1. Extend the regular chimney sections until the top of the chimney is 4 inches below the total flue height desired.
Do not snap the last section of inlet air duct or largest diameter pipe in place until Step 3 is completed.
2. Remove the shingles from around the chimney so that the flashing may be installed, with the upper part of the
flashing under the shingles.
3. Set the flashing on the roof. Hold a section of the outside pipe (13" diameter) on the flashing and scribe a line
around the flashing, then cut the top off the flashing by cutting 1/4 inch below the scribed line. This should i
ncrease the diameter of the flashing outlet sufficiently to allow the flashing to be placed over the chimney. See
Figure 19.
4. Snap the last section of inlet air duct in place and slide the flashing over the chimney. Adjust the chimney to
assure that the proper minimum clearances are maintained.
5. Nail the flashing securely in place with eight nails.
6. Seal the crack between the top of the flashing and the chimney with mastic. Leave some excess mastic at this
area to be used in step eight. NOTE: Use pliers and wear gloves when performing step seven to minimize the
danger of cutting your hands on the edge of the storm collar.
7. Place the storm collar around the chimney and put the collar together like a belt in belt loops. Slide the end of
collar under the two loops on the other end with the loops facing up. Overlap the ends of the collar until it is
tight against the chimney. Bend the free end of the collar back over the loops to hold the storm collar securely
together. The excess end of the storm collar may be trimmed off.
8. Slide the storm collar down snugly against the flashing until the excess mastic left in step six is forced up into
the crack between the storm collar and the chimney. This should make the joint between the flashing and the
chimney watertight.
9. Install the chimney cap by placing the cap into matching parts of the last chimney section. Then punch or drill
1/8 inch diameter holes in the inlet air duct (chimney pipe) where specified on the brackets and fasten it down
with the No. 8 screws provided. Do not penetrate the inner stainless steel pipe while installing the screws.
10. Check all the parts of the fireplace, chimney and chimney termination cap to assure that no parts have been
damaged or bent during installation and that all parts have been installed properly.
NOTE: The metal used for the chimney cap has a rust protective coating but the cut edges of the parts are not
protected. To prevent rusting and rust staining of nearby structures, exposed parts of the chimney and chim
ney cap should be detergent washed and painted with a galvanized primer paint.
53D9035. Rev 1 03/03

CHIMNEY HEIGHT AND OFFSET CHARTS
19
17
17
26 1/2
26 1/2
31 3/4
31 3/4
36
36
41 1/4
41 1/4
47 1/4
47 1/4
50 3/4
50 3/4
57 3/4
57 3/4
62
62
67 3/4
67 3/4
72 1/2
72 1/2
77 1/2
77 1/2
82
82
88
88
92 1/4
92 1/4
98 1/2
98 1/2
102 3/4
102 3/4
107 3/4
107 3/4
113 1/4
113 1/4
118 1/4
118 1/4
122 1/2
122 1/2
128 3/4
128 3/4
133
133
139 1/4
139 1/4
143 1/2
143 1/2
148 1/2
148 1/2
154
154
159
159
163 1/4
163 1/4
169 1/2
169 1/2
173 3/4
173 3/4
180
180
184 1/4
184 1/4
189 1/4
189 1/4
194 3/4
194 3/4
199 3/4
199 3/4
204
204
210 1/4
210 1/4
214 1/2
214 1/2
220 3/4
220 3/4
CHIMNEY SECTIONS WITH ELBOW OFFSETS
CHIMNEY SECTIONS WITH ELBOW OFFSETS
TOTAL IN.
TOTAL IN.
OFFSET
OFFSET
CHIMNEY SECTIONS
CHIMNEY SECTIONS
4 1/2
4 1/2
10
10
13
13
15 1/2
15 1/2
18 1/2
18 1/2
22
22
24
24
28
28
30 1/2
30 1/2
33 1/2
33 1/2
36 1/2
36 1/2
39 1/2
39 1/2
42
42
45 1/2
45 1/2
48
48
51 1/2
51 1/2
54
54
57
57
60
60
63
63
65 1/2
65 1/2
69
69
71 1/2
71 1/2
75
75
77 1/2
77 1/2
80 1/2
80 1/2
83 1/2
83 1/2
86 1/2
86 1/2
89
89
92 1/2
92 1/2
95
95
98 1/2
98 1/2
101
101
104
104
107
107
110
110
112 1/2
112 1/2
116
116
118 1/2
118 1/2
122
122
4'
4'
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
1
1
0
0
1
1
1
1
0
0
2
2
1
1
0
0
2
2
1
1
0
0
2
2
1
1
3
3
2
2
1
1
3
3
2
2
1
1
3
3
2
2
4
4
3
3
2
2
4
4
3
3
2
2
4
4
3
3
5
3'
3'
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
2
2
0
0
1
1
2
2
0
0
1
1
3
3
0
0
2
2
3
3
1
1
2
2
0
0
1
1
3
3
0
0
2
2
3
3
1
1
2
2
0
0
1
1
3
3
0
0
2
2
3
3
1
1
2
2
0
1"
0
1
0
2
1
0
2
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1-1/2'
1-1/2'
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
ELBOW
ELBOW
SET
SET
1
1
1 
1 
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1 
1 
1
1
1
1
1
1
1
1
1
1

INTERMEDIATE
INTERMEDIATE
SECTIONS
SECTIONS
4'
0
0
1
0
1
1
0
1
1
0
2
1
0
2
1
0
2
1
3
2
1
3
2
1
3
2
4
3
2
4
3
2
4
3
5
4
3
5
4
3
5
4
6
5
4
6
5
4
6
5
7
6
5
7
6
5
7
6
8
3'
1
0
0
1
0
0
2
0
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
1
3
0
2
3
1
2
0
1-1/2'
1-1/2'
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0


1'
1'
0
0
2
2
0
0
0
0
1
1
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
HEIGHT 
HEIGHT 
(INCHES)
(INCHES)
35
35
39
39
47
47
52
52
58
58
64
64
70
70
75
75
82
82
87
87
94
94
99
99
105
105
111
111
117
117
122
122
129 
129 
134
134
141
141
146
146
152
152
158
158
164
164
169
169
176
176
181
181
188
188
193
193
199
199
205 
205 
211
211
216
216
223
223
228
228
235
235
240
240
246
246
252
252
258
258
263
263
270
270
275
275
282
282
287
287
293
293
293
293
305
305
310
310
317
317
322
322
329
329
334
334
340
340
346
346
352
352
357
357
364
364
369
369
376
376
NOTE FOR STRAIGHT RUN CHIMNEYS:
Chimney support required at 25' chimney height.
NOTES FOR CHIMNEYS WITH ELBOW OFFSETS:
The length of the inclined portion of the chimney between
elbows must not exceed 6 feet when unsupported, or 20
feet if the chimney is supported at 6 foot intervals using
either metal support straps or an LCS chimney support.
The LCS chimney support when installed at a 30 degree
angle will add 8" of rise and 4-5/8" of offset to the chimney
height calculations.
53D9035. Rev 1 03/03