Monessen Hearth WOODBURNING PENINSULAR 624WBPF User manual

539042
MPL cover
Installation, Operation and
Maintenance Manual
for Residential Installation









This fireplace is listed by OMNI-Test Laboratories for use
with “11CF” Series Chimney System Components.

53D9052 4/09 Rev. 2

2
624WBPF Woodburning Fireplace
53D9052
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.

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 OMNI-Test
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.

Listing and Code Approvals ................................................................................................ 2
Important Information ......................................................................................................... 3
Operation Guidelines ..........................................................................................................4
Fireplace Dimensions .........................................................................................................5
Fireplace Location .............................................................................................................6
Clearances ......................................................................................................................... 7
Installation Preparation .......................................................................................................8
Floor Protection .................................................................................................................9
Fireplace Components ..................................................................................................... 10
Fireplace Installation ......................................................................................................... 11
Chimney Installation ......................................................................................................... 12
Chimney Offset Installation ............................................................................................... 14
Chimney Cap Installation .................................................................................................. 16
Outside Combustion Air .................................................................................................... 18
Gas Appliance Installation ............................................................................................... 20
Trim and Door Installation ................................................................................................22
Fireplace Operation .........................................................................................................23
Maintenance and Safety ..................................................................................................25
Replacement Parts ...........................................................................................................28
Warranty ........................................................................................................................... 31







3
53D9052
624WBPF Woodburning Fireplace
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. Fail-
ure 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 manu-
al.
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.
 Do not install a separate solid fuel insert or gas fireplace insert into this fireplace and chimney system
without written authorization.
9.  Do not pack required air spaces with combustible material or insulation not specifically recommended
for use in such areas.

The fireplace is designed to sit directly on a combustible floor. The fireplace must be installed with zero clearance to
combustible building materials at the side and top spacers. Only parts manufactured by MHSC 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 MHSC.
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.
WARNING: This fireplace and chimney must not be used for venting a solid fuel heater or fireplace insert unless written
authorization is given by MHSC. Failure to heed this warning 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.



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.


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624WBPF Woodburning Fireplace
53D9052
When an AK4 combustion air assembly and a combustion air duct are attached to the connecting
point on the left or right side of the fireplace, combustion air may enter the firebox through a dam-
pered opening behind the left or right side brick. 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 and right side of the firebox near the top of the 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. Refer to Page
18 for typical installation methods. Review the precautions and recommendations in this manual
pertaining to outside combustion air installation.





The fireplace is also 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 from entering the chimney as well as
preventing warm air in the room from escaping up the chimney.
: It is normal for a small amount of smoke to be released from the upper portion of the fire-
place 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.
 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. Conse-
quently, 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 con-
sumed 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, MHSC is
not responsible for heat loss or air infiltration through or around the fireplace.


5
53D9052
624WBPF Woodburning Fireplace
3656O” (927 mm) 1/2” (13 mm)
3056M”
(768 mm)
3756M”
(946 mm)
42”
(1067 mm)
456M”
(1162 mm)
36” (914 mm)
38” (965 mm)
23” (584 mm) 1/2”
(13 mm)
14(6”
(378 mm)
856O”
(216 mm)
12”
(305 mm)
24” (610 mm)
226M”
(578 mm)
9”
(229 mm)
12”
(305 mm)
539042
MPL dims
Figure 1
Gas Line Entrance
(Bottom of Fireplace)


6
624WBPF Woodburning Fireplace
53D9052

This fireplace does not require any special foundation. If the fireplace is to be trimmed
with large stone or brick facing, an adequate foundation is required to support these
materials. Refer to Figures 1-5 as guides for selecting a location and determining the
space required for the fireplace.
The location for the fireplace should be adjacent to a 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 air outlets and returns.
Refer to Figure 2 which illustrates various types of locations and installation and Figure 3 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 costs.
Proper selection of a chimney outlet location is also important. Objects such as overhanging or nearby
trees, adjacent building or embankments or unusual roof designs can all create air turbulence and in-
terfere with chimney performance and cause the fireplace to spill smoke into the room.
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.
FP2346
Fireplace location
Figure 2 





 FP2346




7
53D9052
624WBPF Woodburning Fireplace

FP2345
MPL features
Figure 3
Residential Installation
Chimney Cap
Roof Flashing
(Flue Outlet Height)
Storm Collar
14 ft. = Min. Height (No offsets)
14 ft. = Min. Height (2 30° Elbows)
21 ft. = Min. Height (4 30° Elbows)
86 ft. = Max. Height (Chimney support
every 35 ft.)
11CF1 (1 ft. pipe)
11CF18 (1Z\x ft. pipe)
11CF3 (3 ft. pipe)
11CF4 (4 ft. pipe)
Maintain 2” Minimum Air
Space Between Chimney
and Combustibles
Gas Line
(Optional)
Flexible Duct
Type FP-4-U
Combustion Air
Assembly (Optional) Metal Safety Strip
(Floor Line)
Firestop
(Requires 17 x 17 framing)
Nail to Framing Mem-
bers Each Side
Firestop
1/2” Min. Air Space to
Combustibles
FP2345
Combustible materials should not be installed below
top spacer. Noncombustible materials such as brick
or tile may be used to trim face or the fireplace, com-
bustibles must not overlap the black painted face of
fireplace more than 1/8”.


8
624WBPF Woodburning Fireplace
53D9052
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.
Figure 6. 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 usage. Poor
installation or location of the chimney cap and/or components can cause wind blown rain to enter
the chimney.
If the fireplace is to be installed on an outside wall, the surrounding walls (chase) should be insu-
lated. Failure to insulate the fireplace from outside temperatures will cause heat loss through and
around the fireplace.

14’ Min.
FP2347
single story install
Chimney Cap
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Storm Collar
Flashing
Flue Outlet Height
3’ Min. or 2’ Above
any Point within 10’
See Table
1 for Roof
Opening Size
Attic Space
Firestop Spacer
(1Z\x” Air space
Clearance to
Combustibles)
Chimney
Sections
17” Square
Opening in
Joist
FP2347
Figure 4
2” Min. Air Space
Clearance Between
Combustibles and
Chimney
FP1882
chimney location
8/08
Preferred
Location
Poor
Location
FP1882
Figure 6
3 ft. Min.
FP2348
multistory install
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Chimney Cap
Storm Collar
(Included with
cap)
Flashing
Refer to Table
1 for Roof
Opening Size
Attic Space
Firestop
Spacer (2”
Air Space
Clearance to
Combustibles)
2” Clearance to
Combustibles (Min.)
17” Square Open-
ing in Joist
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Third Floor
Area
Second
Floor Area
First Floor
Area
Flue Outlet Height
17” Square
Opening in
Joist
17” Square
Opening in Joist
Firestop
Spacer
Firestop
Spacer
FP2348
Figure 5

9
53D9052
624WBPF Woodburning Fireplace
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If this fireplace is installed on a combustible floor, the floor area 16 inches in front of, and 8 inches ei-
ther side of the fireplace opening must be protected by an insulating noncombustible hearth extension.
Figures 6 & 7
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 Figure 8. 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.
 If noncombustible hearth extension materials are to be
placed at or below the level of the bottom of the fireplace, insu-
lation board is not required.
If the fireplace is recessed into the floor or the hearth is elevat-
ed with combustible materials, an MHSC H1652 hearth exten-
sion kit or equivalent must be used for additional protection.
FP2349
fireplace location
16”
36” Min.
8”
Hearth
Extension
Wall Shield
Installed Flush
with Wall
Board
(16” x 36” x
1/2” thick Non-
combustible
Board with ‘R’
Factor of 43 or
Less)
Hearth
Extension
Wall Shield on top of
Wall Board
(Model WS or Equiva-
lent)
Glass
Glass Door
Glass Door
1/2” Air Space
FP2349
Figure 6
FP2350
floor protection
8”
29”
Min.
4”
Min.
Hearth
Extension
Glass Door
Glass Door
Glass
Hearth
Extension
Installation Minimums
with No Wall Shields
Finished Combustible
Wall Clearance from
Fireplace Screen Open-
ing
FP2350
Figure 7
FP2183
safety strip
1/09
2”
2”
2”
Metal Safety
Strip
(2 Required)
Special ‘Z’
Metal Safety
Strip
(2 Required)
FP2183
Figure 8

10
624WBPF Woodburning Fireplace
53D9052
WH36
Glass Doors
(Standard)
Chimney
Support
11CS
30° Elbow Set
11CF30-2
Hearth
Extension Kit
H1652
Firestop Spacer
FS2A, FS6A
Flashing
8-6-12, 8-12-12
AK4
Combustion
Air Assembly
(AK6 for
Manufactured Home
Installation) Chimney Cap
RLTCF11
SLTCF11
Extended
Chimney Cap
RLTCF11L
Chimney Sections
11CF4 11CF3 11CF18 11CF1
Flat Flashing
36"x72" (13.5" Diameter Hole)
FP2351
MPL fireplace components
MPL
Penisula
Fireplace
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624WBPF Peninsula Style Fireplace
11CF1 12” chimney section
11CF18 18” chimney section
11CF3 36” chimney section
11CF4 48” chimney section
11CF30-2 30° elbows (package contains two 11” diameter elbows) One pair is required for each offset.
11CS Chimney support (required when chimney height exceeds 30 feet)
SLTCF11 Chimney cap for contemporary installations.
RLTCF11 Round chimney cap for contemporary installations.
RLTCF11L Extended chimney cap for contemporary installations.
8-6-12 0-6/12 pitch flashing for contemporary installation.
8-12-12 6/12 to 12/12 pitch flashing for contemporary installation.
FS2A Vertical Firestop spacer - One required at each ceiling or floor level.
FS6A 30° Firestop spacer - for 30° chimney incline through ceiling or floor.
FP-4-U 4” flexible combustion air duct-8-foot lengths.
403 4-inch duct connector (for splicing FP-4 ducts). Includes two clamps.
AK4 4” outside combustion air assembly.
WH22 End glass door assembly (1 required)
WH36 Glass door assembly (2 required)
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