Monessen Hearth Corner Fireplace 624WBCR Owner's manual

MODELS 624WBCL AND 624WBCR
CORNER FIREPLACE
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
FOR RESIDENTIAL INSTALLATION
53D9051. Rev 1 03/03
36 INCH BUILT-IN WOOD
BURNING CORNER
FIREPLACE WITH
OPTIONAL OUTSIDE
AIR AND GLASS
DOORS.
WARNING: THIS FIREPLACE
HAS NOT BEEN TESTED
WITH AN UNVENTED GAS
LOG SET. TO REDUCE RISK
OF FIRE OR INJURY, DO NOT
INSTALL AN UNVENTED GAS
LOG SET INTO FIREPLACE.
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CONGRATULATIONS!
You have chosen a fine woodburning fireplace. Your fireplace has been designed and built 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.
The design of this fireplace and these instructions complied with the applicable safety standards 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 occurences 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 ............................................................................................................... 2
IMPORTANT INFORMATION ........................................................................................................................ 3
OPERATION GUIDELINES ......................................................................................................................... 4
CLEARANCES ........................................................................................................................................ 5
FIREPLACE COMPONENTS ....................................................................................................................... 6
FIREPLACE INSTALLATION ........................................................................................................................ 7
CHIMNEY COMPONENTS .......................................................................................................................... 8
SELECTING ALOCATION .......................................................................................................................... 9
FLOOR PROTECTION ............................................................................................................................ 10
CLEARANCES ...................................................................................................................................... 11
FIREPLACE INSTALLATION ................................................................................................................. 12-14
CHIMNEY INSTALLATION ................................................................................................................... 15-16
CHIMNEY OFFSET INSTALLATION ............................................................................................................. 17
CHIMNEY OFFSET AND CAP INSTALLATION ........................................................................................... 18-19
CHIMNEY CAP INSTALLATION ................................................................................................................. 20
OUTSIDE COMBUSTION AIR PRECAUTIONS & RECOMMENDATIONS ................................................................ 21
COMBUSTION AIR ASSEMBLY ................................................................................................................. 22
GAS APPLIANCE INSTALLATION ......................................................................................................... 23-24
TRIM INSTALLATION ......................................................................................................................... 24-25
GLASS DOOR INSTALLATION .................................................................................................................. 24
FIREPLACE OPERATION .................................................................................................................... 26-27
MAINTENANCE AND SAFETY .............................................................................................................. 28-30
PARTS DIAGRAM AND LIST .................................................................................................................... 31
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IMPORTANT INFORMATION
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.
Monessen Hearth Systems fireplaces are intended for installation and use according to standard NFPA 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 ASEPARATE SOLID FUEL INSERT OR GAS FIREPLACE INSERT IN THIS FIREPLACE AND CHIMNEY
SYSTEM WITHOUT WRITTEN AUTHORIZATION FROM MONESSEN HEARTH SYSTEMS.
9. Do not pack required air spaces with combustible material or insulation not specifically recommended for use
in such areas.
Intended Product Usage
This fireplace is intended for supplemental heating only and is not intended for use as a primary heatingsystem.
This fireplace is designed to sit directly on a combustible floor. The fireplace can be installed with zero clearances
to combustible building materials at the side, back and top spacers. Only parts manufactured by Monessen Hearth
Systems and labeled for use with this fireplace should be used in the installation of the 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 solid wood fuel (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 hazard-
ous.
This fireplace is designed for installation in mobile homes if it is installed in accordance with figure 32 in this manual,
which includes using an OAC6 combustion air assembly, WB36LR glass door, SVT firestop thimble, and use either the
LLK or RLK louver kit.
WARNING: DO NOT INSTALL IN A SLEEPING ROOM OF A MOBILE HOME.
CAUTION: IFINSTALLED IN AMOBILE HOME, THE STRUCTURAL INTEGRITY OF THE FLOOR, WALL AND CEILING/ROOF MUST BE MAINTAINED.
WARNING: THIS FIREPLACE AND CHIMNEY MUST NOT BE USED FOR VENTING ASOLID FUEL HEATER OR FIREPLACE INSERT UNLESS
WRITTEN AUTORIZATION IS GIVEN BY MONESSEN HEARTH SYSTEMS. FAILURE TO HEED THIS WARNING MAY CAUSE FIRE HAZARD AND WILL
VOID THE WARRANTY.
improper installation or use of this fireplace will void its 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.
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OPERATION GUIDELINES
As wood is burned in the fireplace, room air enters the air slot on the lower front edge and circulates around the
firebox.
The air circulation around the firebox serves to cool the fireplace and must not be blocked in any manner.
Blocking of the inlet slot or outlet louver will cause the firebox to reach hazardous temperatures.
When an OAC4 combustion air assembly and a combustion air duct are attached to the connecting point on
the side of the fireplace, combustion air may enter the firebox through a dampered opening behind the 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 side of the firebox 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 for additional information.
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 from 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 unique design of the fireplace allows the routing of the combustion air duct downward, horizontally or
upward to obtain the outside combustion air. This permits maximum flexibility in planning your installation. See
figure 22 for typical installation methods. Be sure to review the precautions and recommendations in the
section of this manual pertaining to outside combustion air assembly.
The fireplace also is 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 Monessen Hearth Systems fireplace. This results
from an oil residue on the metal. Open a door or window to allow the smoke to escape.
WARNING: Fireplaces equipped with glass doors should be operated only with the glass doors fully open or
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 from 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.
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CLEARANCES
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FIREPLACE COMPONENTS
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MODEL NUMBER DESCRIPTION
624WBCL, 624WBCR Left or right end open fireplace. Includes wire firescreen, sealing flue damper and
outside combustion air capability. When installed, outside combustion air can be
connected to left side. See installation instruction for details.
S48 4-foot chimney section (8-inch-diameter flue).
S36 3-foot chimney section (8-inch-diameter flue).
S18 1-1/2 foot chimney section (8-inch-diameter flue).
S12 1-foot chimney section (8-inch-diameter flue).
SE30 30-degree elbows (package contains two 8 inch diameter elbows). One pair is required
for each offset. Maximum -- two pairs (4 elbows per chimney).
SCS Chimney support (required when chimney height exceeds 30 feet).
SC Round chimney cap for contemporary installations. Includes storm collar.
SCL Round telescoping chimney cap.
SQL8 Square telescoping chimney cap.
612 0-6/12 pitch flashing for contemporary installation. One required with SC round chimney
cap on 0-6/12 pitch roof.
1212 6/12 - 12/12 pitch flashing for contemporary installation. One required with SC round
chimney cap on 6/12-12/12 pitch roof.
SF 14 1/2” inch firestop spacer --One required at each ceiling or floor level.
SF-30 Firestop spacer - for 30º chimney incline through ceiling or floor.
FP-4-U 4-inch insulated combustion air duct -- 8 foot lengths.
403 4-inch duct connector (for splicing FP-4 ducts). Includes two clamps.
OAC4 4-inches outside combustion assembly.
WB36LR Optional polished brass glass door kit.
H1658 Hearth extension board for front opening. (16” x 58”)
H1627 Hearth extension board for end opening. (16” x 27”)
S8 Telescoping Assembly for use with telescoping chimney caps.
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FIREPLACE INSTALLATION
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CHIMNEY COMPONENTS
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1. When installing “E” series triple wall chimney system on the 624WBCL and B36LR, do not mix chimney system
components other than those listed below.
2. Maintain 2” airspace clearances to combustibles.
3. Use same offset and rise chart for chimney when installing elbows.
MODEL NUMBER DESCRIPTION
E48 4-foot chimney section (8-inch-diameter flue).
E36 3-foot chimney section (8-inch-diameter flue).
E18 1-1/2 foot chimney section (8-inch-diameter flue).
E12 1-foot chimney section (8-inch-diameter flue).
EE30 30-degree elbows (package contains two 8 inch diameter elbows). One pair is required
for each offset. Maximum -- two pairs (4 elbows per chimney).
ECS Chimney support (required when chimney height exceeds 30 feet).
LFCC-1 Round termination cap for contemporary installation, includes storm collar.
LFCCL-1 Round Termination cap for chase installation (includes inlet air telescope).
612 0-6/12 pitch flashing for contemporary installation. One required with SC round chimney
cap on 0-6/12 pitch roof.
1212 6/12 - 12/12 pitch flashing for contemporary installation. One required with SC round
chimney cap on 6/12-12/12 pitch roof.
LF-FS-2 17” firestop spacer-One required at each ceiling or floor level below 20 foot chimney
height.
LF-FS-30 Firestop spacer-for 30º chimney incline through ceiling or floor.
LFSQT Square termination for chase installation. Model T8 telescope assembly required but not
included.
T8 Telescoping Assembly for use with telescoping chimney caps.
LF-FF Flat flashing for chase installation (36” x 72”).
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SELECTING A LOCATION
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CAUTION: Do not install fireplace over carpeting.
This fireplace does not require any special foundation. If the fireplace is to be trimmed with large stane or brick
facing, an adequate foundation is required to support these materials. Use figures 5 and 6 as a guide for
selecting a location and determining the space required for the fireplace.
The location for the fireplace should be
adjacent to the load bearing wall and away
from objects that will create drafts that could
disturb the normal flow of air into the fire.
Such objects are frequently opened doors
and central heat and air outlets and returns.
See figure 6 which illustrates various types
of locations and installations and figure 1 for
additional information concerning installation
heights, construction details, and methods
of installation.
A location that requires cutting the least
number of joists and rafters for the chimney
installation will simplify and reduce
installation cost. The opening required for
passage of the chimney through the roof,
ceilings and floors must be 17 inches square
as indicated by figures 7 and 8. The 17-inch
square opening provides for the installation
of the model LF-FS-2 firestop spacer in a
residential installation.
Since the pitch of the roof influences the
opening size required at the roof level, table
1 should be used as a guide for sizing the
roof opening.
Proper selection of a chimney outlet location is also important. Objects such as overhanging or nearby trees,
adjacent building or embarkments or unusual roof designs can all create air turbulance and interfere with
chimney performance and cause the fireplace to spill smoke into the room.
A factory-built fireplace, properly installed in a single story wing of a multi-story builing as shown by figure 9,
may be affected by environmental factors that will cause poor chimney draft and occasional spillage of smoke
from the fireplace opening. Although this occurs infrequently, location of the fireplace in the preferred location
as indicated by figure 9 is recommended.
If the chimney is to pass through living areas or spaces used for storage, be sure that it will be possible to
enclose the chimney to prevent contact with and possible damage to the chimney. Elbows may be used to
avoid obstructions such as electrical wires, water, or sewer pipes, attic fans, heating ducts, etc. Refer to the
section of this manual concerning chimney offsets for proper elbow installation and use.
If the fireplace is to be installed in an outside wall, the surrounding walls should be enclosed and insulated.
failure to properly enclose the fireplace will cause a heat loss and diminish the fireplace efficiency due to
transfer of heat through the fireplace to the outside.
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All fireplaces installed over a combustible floor must incorporate a non-combustible hearth extension. It is
required to protect the floor in front of the fireplace from both radiant heat and sparks.
Hearth extension dimensions should be determined by using the chart below. use hearth extensions as illus-
trated in figures 6, 10 and 11 or use an acceptable thickness of a durable non-combustible material with an
equal or greater insulating value than K = .43 Btu in/ft2-HR-Fº, or a thermal resistance that equals or exceeds
R = 1.16. These materials should be covered with a decorative non-combustible veneer.
NOTE: Any non-combustible material with a K factor value that is less than .43, or whose R value is more than
1.16 for 1/2” thick material is acceptable.
HOW TO DETERMINE HEARTH EXTENSION REQUIREMENTS
The following information is provided to determine required thickness for any non-combustible material when
either the K or R values are known. They are expressed as the following: K = Btu-in/ft2-HR-Fº or R = HR-fº/Btu.
These materials should be covered by a decorative non-combustible material such as tile, brick, stone or slate.
To determine the thickness needed for a material other than those listed in the chart, use the following formulas
to calculate that which will be an acceptable equivalent.
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. 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.
* See figure 6A for an alternate hearth extension using brick only.
WARNING: THE CRACK BETWEEN THE HEARTH EXTENSION AND FIREPLACE MUST BE SEALED WITH
A NON-COMBUSTIBLE MATERIAL. WHEN INSTALLING THE HEARTH EXTENSION, BE CAREFUL NOT
TO BLOCK THE HEAT CIRCULATING AIR INLETS (LOUVERS, SLOTS, ETC.). SEE FIGURE 6A.
Wall Protection
A model WS wall shield or an equivalent must be installed when the closed end of the fireplace is closer than
24 inches from a wall perpendicular to the face of the fireplace. (see figures 10 and 11). The WS wall shield
should be attached securely to the wall by driving nails or screws through it into the wall studs. The wall shield
should be covered by a decorative non-combustible material such as brick, tile, slate, etc.
The WS wall shield is constructed by 1 inch of Micore CV230 insulation board, manufactured by U.S. Gypsum
Corporation, covered by a sheet of galvanized metal. An alternate insulating material with a K factor of .43 or
lower can be used. refer to the preceeding section for instructions for selecting an alternate insulating material.
WARNING: IF NOT INSTALLED, OPERATED AND MAINTAINED IN ACCORDANCE WITH THE
MANUFACTURER’S INSTRUCTIONS, THIS PRODUCT COULD EXPOSE YOU TO SUBSTANCES IN FUEL
OR FROM FUEL COMBUSTION WHICH CAN CAUSE DEATH OR SERIOUS ILLNESS AND WHICH ARE
KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER REPRO-
DUCTIVE HARM. ALSO, OPERATION, INSTALLATION AND SERVICING OF THIS PRODUCT COULD EX-
POSE YOU TO AIRBORN PARTICLES OF GLASS WOOL FIBERS KNOW TO THE STATE OF CALIFORNIA
TO CAUSE CANCER THROUGH INHALATION.
FLOOR PROTECTION
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CLEARANCES
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FIREPLACE INSTALLATION
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FIREPLACE INSTALLATION
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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 the
Parts Diagram and List section of this manual for proper identification of parts.
Do not substitute parts. Use only parts listed for use with Model MD36I fireplace.
FIREPLACE INSTALLATION
1. Refer to Figure 1 for examples of typical fireplace framing.
2. Be sure the location of the fireplace will provide the required safety clearances as specified by this instruc-
tion manual.
3. Set the fireplace in the desired location and be sure it is securely supported and leveled. Install metal
safety strip for hearth extension as shown by Figures 10, 11, and 12. Check the face of the fireplace with
a carpenter’s level to make sure the fireplace is plumb. If it is not plumb, plumb 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. Install chimney and other fireplace components
as needed.
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.
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CHIMNEY INSTALLATION
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3. Enclose the chimney where it passes through the living spaces to prevent contact with and possible damage
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. (see figure 12) 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.
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 Table 1.
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. Figure 17. You must have joists
or headers on all four sides of the spacer and use a minimum of four 8-penny nails to secure the spacer.
3. To install the “S” 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 sides. 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.
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CHIMNEY INSTALLATION
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CHIMNEY OFFSET INSTALLATION
ELBOW INSTALLATION
NOTE: If triple wall elbow is to be placed directly to the top of the fireplace, it will be necessary to bend a tab
over located on each of the four inlet air collar brackets. bend these tabs over only when using a triplewall
elbow to start a chimney run. The tabs may be easily bent with your fingers or pliers. See figure 16A.
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. See Figure 16.
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 — 16' 0" 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. Figures 17 and 18 illustrates elbow
installations.
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 Table 2.
2. Install the first elbow by placing the crimped end 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 SF30 firestop spacer should
be installed to provide the firestop and support required. Be sure proper spacing in maintained between the
chimney and combustibles. See Figure 19.
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NOTE: If you intend to have a total fireplace installation of more than 30 feet, you must use a chimney support
at or below 30 feet to support the weight of additional chimney pipe. If it is impossible to nail the chimney
support to the load bearing framing of the builing at the 30 foot level, the chimney support may be installed at
a lower level if the height of the chimney above the support does not exceed 30 feet. Effective height of the
chimney support is 16-3/4 inches. Chimney supports must be installed at 30 foot intervals.
To install the chimney support, place the crimped end of the flue into the last section of chimney pipe (see
figure 15). Push down until the outside or inlet air duct of the chimney support overlpas and snaps 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 15. You must use
at least two 8 penny nails per strap.
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CHIMNEY OFFSET AND CAP INSTALLATION
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CHIMNEY CAP INSTALLATION
MODEL SC 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 it penetrates the roof. See Figure 12.
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 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 increase the diameter of the flashing outlet sufficiently to allow
the flashing to be placed over the chimney. See Figure 18.
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. Push down until
the brackets on the bottom of the chimney cap sits on the chimney pipe. 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 chimney
cap should be detergent washed and painted with a galvanized primer paint.
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