FMI Masonry MM33 User manual

For more information, visit www.fmiproducts.com
Masonry Firebox
Do not store gasoline or other ammable vapors and
liquids in the vicinity of this or any other appliance.
Instructions
ReportNo. 08-154
MODELS MM33, MM39, MM44, MM49 AND MM63
IF FIREPLACE IS TO BE INSTALLED DIRECTLY ON ANY COMBUSTIBLE MATERIAL, A METAL BASE
IS REQUIRED.
SAVE THIS BOOK
This book is valuable. In addition to instructing you on how to install and maintain your appliance,
it also contains information that will enable you to obtain replacement parts or accessory items
when needed. Keep it with your other important papers.
This replace is approved for use as a wood burning replace or for use with a vented gas log approved
to ANS Z21.60 or Z21.84 standards. It has not been tested or approved for unvented gas logs.
This wood burning replace complies with UL127 standard as a FACTORY BUILT APPLIANCE.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury
or property damage. Refer to this manual for correct installation and operational procedures. For as-
sistance or additional information consult a qualied installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
ICC Evaluation Services
Report No. 2401

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IMPORTANT: Check local codes before install-
ing this replace.
Before beginning the installation of the replace, read
these instructions through completely.
• This FMI PRODUCTS, LLC fireplace and its
components are safe when installed according
to this installation manual. Unless you use FMI
PRODUCTS, LLC components, which have been
designed and tested for the replace system, you
may cause a re hazard.
• The FMI PRODUCTS, LLC warranty will be voided
by and FMI PRODUCTS, LLC disclaims any re-
sponsibility for the following actions.
a. Modication of the replace, components, doors,
air inlet system and damper control.
b. Use of any component part not manufactured
or approved by FMI PRODUCTS, LLC in com-
bination with a FMI PRODUCTS, LLC replace
system.
Proper installation is the most important step in en-
suring safe and continuous operation of the replace.
Consult the local building codes as to the particular
requirements concerned with the installation of all
factory built replaces.
WARNING: Do not install a replace or
other products not specied for use with this
replace.
Safety ......................................................................2
Specications ..........................................................4
Product Overview ....................................................6
Pre-Installation Preperation .....................................7
Venting Installation ................................................12
Optional Gas Line Installation................................17
Optional Electrical Connection Installation.............17
Supporting Floor System .......................................18
Combustible Floor Installation................................20
This replace is not intended to be used as a
substitute for a furnace to heat an entire home.
Use for supplemental heat only.
FOR YOUR SAFETY
• Do not store or use gasoline or any other am-
mable vapors or liquids in the vicinity of this
or any other appliance.
• Due to high temperatures, the appliance should
be located out of trafc and away from furniture
and draperies.
• Do not place clothing or other ammable ma-
terials on or near the appliance.
• Never leave children unattended when a re is
burning in the replace.
WARNING: Use solid wood or processed
solid fuel re logs only. When processed wood
fuel re logs are used, do not poke or stir the
logs while they are burning. Use only re logs
that have been evaluated for the application in
replace and refer to re log warnings and cau-
tion markings on packaging prior to use.
WARNING: Always leave glass doors fully
opened or fully closed when operating re-
place.
WARNING: If replace is to be installed on
combustible material, a Metal Base must be used.
See Accessories on page 33.
TABLE OF CONTENTS
SAFETY
Fireplace Installation..............................................22
Firebrick Installation...............................................29
Operation and Maintenance ..................................30
Technical Service...................................................32
Replacement Parts ................................................32
Accessories ...........................................................33
Parts ......................................................................36
Warranty .................................................. Back Page

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125160-01A 3
SAFETY
Continued
WARNING: THIS FIREPLACE HAS NOT BEEN
TESTED FOR USE WITH AN UNVENTED GAS
LOG SET. TO REDUCE THE RISK OF FIRE OR
INJURY, DO NOT INSTALL AN UNVENTED GAS
LOG SET INTO FIREPLACE.
WARNING: THIS FIREPLACE HAS BEEN
TESTED FOR USE WITH OPTIONAL GLASS
DOORS FROM CROWN-BRECKINRIDGE OR
MCKENZIE-PENDELTON ONLY.
GUIDELINES FOR USE:
All current and future users of FMI PRODUCTS, LLC
Fireplaces are charged with the responsibility for full
knowledge of the information contained within this
manual which includes:
Strict requirements for assembly.
Detailed instructions for installation.
Cautionary guidelines for use.
On-going maintenance instructions.
It is the responsibility of the distributor, subcontractor
and/or the general contractor – whoever shoulders
the liability for installation of this product – to see that
it works in complete compliance with the guidelines
and instructions in this manual. Note that the general
contractor is the party accountable for seeing that
adequate clearances are provided for all rebox
surfaces per specications in this manual.
The Grand Meridian is Designed for Use Only
with:
- Solid Wood Logs
- Plumbed LPG or Natural Gas Log Lighter.
- Plumbed ANSI Z21.60 or Z21.84 Decorative Gas
Log.
DO NOT USE OR STORE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR GASES IN OR NEAR
THE FIREPLACE!
ATTENTION: A re or an explosion could occur
causing property damage, injury or loss of life if you
do not follow the information in this manual!
NOTE: THIS MANUAL MUST BE REPRODUCED
ONLY IN ITS ENTIRETY.
Before Beginning the Installation
Read these instructions carefully before beginning
the installation of this replace. Also, if installing an
ANSI Z21.60 or Z21.84 Decorative Gas Log, read
the gas log appliance manufacturer’s literature
regarding sizing and suitability for the installation into
this enclosure prior to installation.
Statement of Intended Use:
The Grand Meridian Fireplace is a modular refractory
masonry unit designed for eld assembly. The rebox
is constructed using pre-cast, interlocking refractory
blocks. The blocks are then secured to each other
using Mortar. The system includes all parts necessary
for the assembly of a complete masonry replace.
In addition to the basic enclosure, a standard 1-1/8”
thick, high temperature refractory brick is required to
line the interior of the rebox and can be purchased
from the manufacturer.
These replaces are not intended to serve as
a primary heat source, rather, the replace was
expressly created as a supplemental source of heat.
The unit is designed for use with solid fuels such as
cord wood.
WARNING: Any application other than the
“Intended Use” as stated above is in violation
of the manufacturer’s instructions and is hereby
prohibited. Such violation may cause immediate
hazard, property damage or loss of life and will
void all liabilities to the manufacturer and will
void all warranties explicit or implied.

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45 ⅝"
32 ⅞"
AA
2X Ø 12"
22 ¼"
11"
SECTION A-A
62 ⅞"
23 ⅛"
28"
53 ¼"
66 ⅞"
21"
72 ⅞"
7 ⅜"
4 ½"
40 ¾"
4 ⅛"
OUTSIDE
COMBUSTION AIR
ACCESS HOLE
23 ½"
Figure 2: MM63 Fireplace Overall Dimensions
33"
22"
54 ⅝"
24 ½"
A A
SECTION A-A
30 ½"
4 ½"
Ø4" OUTSIDE AIR ACCESS
CAN BE INSTALLED
ON THE LEFT SIDE ALSO
28 1/8"
Ø 12"
10"
18 ½"
37"
23"
23 ¼"
21"
28"
Figure 1: MM33 Fireplace Overall Dimensions
SPECIFICATIONS

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125160-01A 5
Fireplace Overall Dimensions
Model A B C D E F
MM39 43″ 39″ 29¼″ 27¾″ 38¾″ Ø12″
MM44 48″ 44″ 34¼″ 32¾″ 43¾″ Ø12″
MM49 53″ 49″ 39¼” 37¾″ 48¾″ Ø12″
40 ⅝"
4 ⅜"
7 ⅜"
A/2
11"
28"
HH
21"
23"
C
E
B
10"
4 ¼"
A
SECTION H-H
4"
32 ⅞"
Ø F
D
63 ½"
Figure 3: MM39/44/49 Fireplace Overall Dimensions
SPECIFICATIONS
Continued

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PRODUCT OVERVIEW
Figure 4: Typical Installations
INTRODUCTION
We extend a warm welcome from all of us at FMI
PRODUCTS, LLC, proud manufacturers of the Grand
Meridian Fireplaces. Thank you for choosing FMI.
You may have thought long and hard before you
chose the replace which would grace your home.
Rest assured that every component of the Fireplace
has been tested to ensure long-term durability.
PRODUCT OVERVIEW
The Grand Meridian Fireplaces are designed as
factory-built blocks to be assembled on-site. These
replaces may be installed on either combustible or
non-combustible oors. In order for the replace to
be installed on a combustible oor though, it is nec-
essary that the replace be supported on a platform
or sub-oor that is non-combustible.
The Four Components of the Grand Meridian
Fireplace:
Combustible or Non-Combustible Floor•
Non-Combustible Raised Platform•
Firebox and Smoke Dome•
FMI PRODUCTS, LLC chimney system •
required.
IMPORTANT: Follow the chimney pipe
manufacturer’s instructions on the installation of
their specic ue system.
Careful step-by-step instructions for each phase
of the installation procedure will be given for
the Grand Meridian conventional radiant heat
replaces. Those instructions generally fall into
the following categories:
Spacing and clearance as it relates to combustible •
materials.
Familiarity of installation for all components.•
The strength of the oor on which it rests.•
Chimney system measurements.•
Choice of materials and craftsmanship in replace •
and hearth nishing.
Internal
Wall
Installation Corner
Installation
Flush
Installation
Full
Projection
Installation
Note that each of these topics will be covered in de-
tail and that the installer is expected to understand
each phase completely before going on to subse-
quent instructions.
ATTENTION: Be advised that all the illustrations in
this manual are for general reference only. Do not
scale drawings. Actual design elements will vary
from case to case. Pay attention to specied mini-
mum clearances to combustibles.
Testing and listing for these Grand Meridian Fireplac-
es has been undertaken by the PFS Corporation.
ATTENTION: You may need a residential building
permit to install a Grand Meridian Fireplace. Consult
local jurisdictions before you get started!
If asked, advise the local authorities that the
FMI Fireplace is designed for installation per the
National Fire Protection Association Standard
for Chimneys, Fireplaces, Vents and Solid
Fuel-Burning Appliances (NFPA211).
When choosing the location of your FMI Fireplace,
keep in mind you must maintain 2" minimum clearance
from left, right and rear of Fireplace to surrounding
structure. Also, when choosing a location, consider
outside air requirements to determine if it will be on
the left or right side of the Fireplace. In the case of
an island installation, outside air accessibility may be
obtained through sub ooring, see Optional Outside
Air Kit on page 12.

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125160-01A 7
PRE-INSTALLATION PREPARATION
WARNING: Do not pack required air spaces
with insulation or other materials.
Minimum/Maximum Chimney Height for
Residential Installation
Minimum height of chimney, measured from base of
replace to ue gas outlet of termination, is 14 feet
for straight ue or 17 feet for a ue with one elbow
set. Maximum distance between elbows is 6 feet. For
systems with two elbow sets, minimum height is 22
feet. Maximum height of any system is 40 feet. This
measurement includes replace, chimney sections
and height of termination assembly at level of the
ue gas outlet (see Figure 20, page 16).
FRAMING
1. Frame opening for replace using dimensions shown
in Figures 6 and 7.
2. If replace is to be installed directly on carpeting,
tile (other than ceramic) or any combustible material
other than wood ooring, replace must be installed
upon a metal extending full width and depth of re-
place.
3. Set replace directly in front of this opening and
slide unit back until nailing anges touch side fram-
ing.
4. Check level of the replace and shim with sheet
metal if necessary.
5. Before securing replace to prepared framing,
ember protector (provided) must be placed between
hearth extension (not supplied) and under bottom
front edge of replace to protect against glowing em-
bers falling through. If replace is to be installed on
a raised platform, a Z-type ember protector (not sup-
plied) must be fabricated to t your required platform
height. Ember protector should extend under replace
a minimum of 1 1/2". Ember protector should be made
of galvanized sheet metal (26 gauge minimum to pre-
vent corrosion.
6. Using screws or nails, secure replace to framing
through anges located on sides of replace.
SELECTING LOCATION
To determine the safest and most efcient location
for the replace, you must take into consideration the
following guidelines:
1. The location must allow for proper clearances (see
Figures 6 and 7).
2. Consider a location where replace will not be af-
fected by drafts, air conditioning ducts, windows or
doors.
3. A location that avoids cutting of joists or roof raf-
ters will make installation easier.
4. An outside air kit is available with this replace
(see Optional Outside Air Kit on page 12).
MINIMUM CLEARANCE TO COMBUSTIBLES
The distance to be maintained from the surfaces
of the replace to combustibles must be observed.
Below is a list of the most common combustible
materials to name a few:
Drywall Wood Flooring Plywood
Sub-Flooring Wood Framing Mill Board
Particle Board Plywood Paneling
Maintain the following clearances:
Unit sides, rear, Dome sides, rear & top..........2" min.
Combustible Floors (MM33,39,44,49)..............6" min.
Combustible Floors (MM63 only).....................8" min.
Combustible Sheathing above opening top..18" min.
Sheathing or trim to opening sides...................8" min.
Mantel above opening..........................see Figure 5
Opening to sidewall...............................................24"
Hearth extension beyond front.............................20"
Hearth extension beyond sides............................12"
Insulation from rebox............................................2"
Figure 5: Mantel Clearances to Combustible
Material

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WARNING: Failure to position the parts in accordance with these diagrams or failure to use only
parts specically approved with this appliance may result in property damage or personal injury.
18" MIN*
½"
MIN**
2" MIN. CLEARANCE TO
COMBUSTIBLES AROUND
SIDES, REAR AND TOP OF
FIREPLACE DOME
W
*IF WOOD FRAMING IS UTILIZED IT
MUST BE HELD 18" MIN. FROM TOP
OF LINTEL AND 2" MIN.CLEARANCE
MUST BE MAINTAINED ALL AROUND
FIREPLACE DOME.
**IF METAL FRAMING IS USED MAINTAIN
A ½ INCH MIN. AIR SPACE FROM TOP
OF LINTEL.
Model W
MM33 41”
MM39 47”
MM44 52”
MM49 57”
MM63 71”
MAINTAIN THE 2" CLEARANCE TO
COMBUSTIBLES ABOVE THE DOME. DO
NOT ATTACH COMBUSTIBLE MATERIALS
ON TOP OF THE DOME.
Figure 7: Framing Dimensions for Non-Combustible Floor Systems
* MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS.
** MEASURED FROM FLOOR TO TOP OF FIREBRICK LINER.
18" MIN*
MAINTAIN THE 2" CLEARANCE
TO COMBUSTIBLES ABOVE
THE DOME. DO NOT ATTACH
COMBUSTIBLE MATERIALS
ON TOP OF THE DOME.
H**
8" MIN*
Condition Dim. H**
with 6" platform 10"
with 8" platform 12"
without platform 3"
NON-COMBUSTIBLE
FACING (NOT SUPPLIED).
Figure 6: Framing Dimensions for Combustible Floor Systems
PRE-INSTALLATION PREPARATION
Continued

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125160-01A 9
1’-8” MIN
2” MIN
2” MIN
8”
MIN
1’-0”
MIN
8”
MIN
1’-0”
MIN
NON-COMBUSTIBLE
FACING MATERIAL
HEARTH EXTENSION *
* Not provided as part of fireplace
NON-COMBUSTIBLE
* Not provided as part of replace
or sold by FMI PRODUCTS, LLC.
A
Model A
MM33 70 ½"
MM39 82 ½"
MM44 84 ¼"
MM49 86"
MM63 91"
Figure 8: Corner Installation for Combustible Floor Systems
PRE-INSTALLATION PREPARATION
Continued
Figure 9: Top View for Combustible Floor Systems
1’-8” MIN
8”
MIN
1’-0”
MIN
8”
MIN
1’-0”
MIN
NON-COMBUSTIBLE
FACING MATERIAL
HEARTH EXTENSION
2” MIN. FROM
REAR AND
SIDES TO
COMBUSTIBLES

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ATTENTION: You will note that there will be a gap
between the replace front and the extension of the
non-combustible hearth material. Be certain that
you seal this with non-combustible material.
These Grand Meridian Fireplaces have been
designed with clearance to combustible oors as
indicated in Page 8. Cover any part of the combustible
oor system left exposed with 1” (one inch) thick
ceramic ber insulation rated up to 2,100° F.
ATTENTION: It is critical to abide by the clearances
listed in this manual for all components specied as it
allows for movement of hot air from the fireplace into
interior areas of the chimney chase. Also, be certain
that the chimney system be installed as stated below.
Prior to starting the installation, check with local, re-
gional or state codes for any restrictions or required
permits regarding your replace installation.
NOTE: It is required that ember protector strips must
be laid on the ber of the non-combustible raised plat-
form (see Figure 10). These are included with the
Metal Base accessory.
WARNING: Hearth extension is to be installed
only as shown in Figure 10.
Seal Gap
Fireplace Front
Fireplace Front
Raised Hearth
Fireplace Front
Elevated
Ember Protector
Seal Gap
Ember Protector
Ember Protector
MANTEL AND MANTEL SHELF CLEARANCES
As with any radiant heat replace, the Grand Merid-
ian replaces must comply with building code safety
clearances, per units that have openings of 6 sq. ft.
or greater. For Mantel clearances see Figure 5, page
7. Walls that Adjoin – Safety codes and all practical
outlooks insist that your replace cannot be installed
closer than 2 ft. to any walls in the room the replace
is housed in or to any walls of adjoining rooms.
Caution in Regards to Combustibles – If any part of
the replace or objects in the room (curtains, rugs,
paint, cushions, etc.) start to show warping or dis-
coloration due to heat from the replace, it is time to
take immediate action. Do not use the replace until
you have gured out how to address the problem.
You are facing a potential re hazard. FMI PROD-
UCTS, LLC cannot be responsible for the make-up
of material on the exterior of the replace you have
chosen, nor can FMI PRODUCTS, LLC be held re-
sponsible for the materials in a room that may be
responding negatively to heat. However, in almost all
cases, there is a solution to the problem, either by
making adjustments to airow or the modications to
the room itself.
HEARTH EXTENSION
Where the ooring material at the opening of the
replace is combustible, it is required that the
hearth extension be covered with a non-combustible
material. All hearth extensions must be made of code-
rated, non-combustible materials such as tile, brick,
marble, concrete or stone. The extension should be
set ush against the front of the replace front and
measure 20" minimum at the front and 12" minimum
beyond the sides of the replace opening as shown in
Figures 8 and 9 (page 9). These relative dimensions
are also covered by code.
If a raised hearth extension is being installed, it must
be constructed of non-combustible material and
any material under the structure must also be non-
combustible.
If using a raised hearth or metal base plate, note that
a combustible wood header must be no closer than
2" to the top of the dome (see Figure 6, page 8).
PRE-INSTALLATION PREPARATION
Continued
Figure 10 - Hearth Extension
Hearth
Extension
Hearth
Extension
Hearth
Extension

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2” AIRSPACE
CLEARANCE TO
COMBUSTIBLES
ON REAR AND
SIDES OF UNIT.
PRE-INSTALLATION PREPARATION
Continued
Figure 11: Non Combustible Floor Figure 12: Combustible Floor

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CAUTION: Combustion air inlet ducts shall
not terminate in attic space.
The maximum height for the air vent can not
exceed 3 feet below the ue gas outlet of the
termination.
FACTORY BUILT CHIMNEY SYSTEMS
The Grand Meridian is designed to be installed with 1)
FMI PRODUCTS, LLC Metal Chimney System.
This Grand Meridian replace is intended as a 2)
supplemental heat source only. It is not intended
as a primary heat source.
It is the responsibility of the contractor/installer 3)
(not the manufacturer) to ensure that adequate
combustion air is provided for proper function of
this replace. Fireplaces take up a large volume of
replacement air from outside the house and if the
house is of airtight construction, smoke spillage
may occur if proper draft is not achieved.
There are many conditions beyond the 4)
manufacturer’s control regarding improper replace
operation. The manufacturer cannot ensure
“smoke free” operation, nor can the manufacturer
take on the responsibility for problems with
surrounding construction; chimneys that have not
VENTING INSTALLATION
Figure 13 - Outside Air Kit Venting
Secure to Collars with Metal Tape, Screws
or Straps (Min. of 1/4" x 20" in size)
Air Inlet
Location
Must
Allow For
Bushes
or Snow
Vent Hood
Required
for Wall
Installation
Vented Crawl
Space (Check
Local Codes
Before Installing
in a Vented
Crawl Space)
OPTIONAL OUTSIDE AIR KIT (MODEL MM4AK)
The Grand Meridian Fireplace needs enough re-
placement air to function properly and some local
building codes may require outside combustion air
to be provided. If no replacement air is provided,
improper ue drafting may occur, creating negative
pressure whereby smoke may enter the home, es-
pecially in homes that are very well insulated and
tightly sealed. Check local building codes for specic
requirements.
The installation of an outside air kit should be per-
formed during the rough framing of the replace due
to the nature of it's location. Outside combustion air
is accessed through a vented crawl space or through
a sidewall (Figure 13). If crawl space is used, check
local codes for proper termination.
Be sure that you carefully check the source of the
outside air before you choose the site for your air in-
take. You don’t want a place where snow will collect,
where bushes or trees will be growing or a location
that is too close to any other structure.
Install Combustion Air Kit into the rebox through the
side wall opening provided. A 4" dia. hole will also be
required through the rebrick side lining (see Figure
12). The tubing that goes out of the rebox wall must
feed into a exible metal conduit as the source for
outside combustible air. Install a screened termina-
tion cap to keep out small animals.
Figure 12 - Outside Air Kit Installation

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125160-01A 13
been built at the correct heights; system drafts
caused by faulty mechanical systems; adverse
weather conditions or any other environmental
situations over which the manufacturer has no
control.
Inspect all replace & chimney components for 5)
evidence of damage prior to starting installation.
Consult your local distributor for replacement
parts if necessary.
Under no circumstances should you make any 6)
adjustments or modications to the chimney
system during the installation procedure. If
you do, you are not only liable for negating the
warranty, but you could very well cause a serious
malfunction of the replace. You must follow these
chimney instructions.
Caution is urged if it is decided to add insulation 7)
material to any part of the Grand Meridian Fireplace
or Chimney system, be certain that the insulation
material is kept at least 2” away from any part of
the system. When using insulation or vapor barrier
materials, cover with a layer of plywood, particle
board or gypsum board to maintain the specied
2” clearance.
Air spaces around rebox must remain open. 8)
DO NOT ll these open spaces with insulation or
packing material of any kind.
CHIMNEY PIPE
The FMI PRODUCTS, LLC chimney system consists
of 12", 18", 24", 36" and 48" snap-lock, double-wall
pipe segments, planned for maximum adaptability to
individual site requirements. Actual lengths gained
after tting overlaps must be taken into consideration
(lineal gain) and are given in the lineal gain chart (see
Figure 14). Lineal Gain is the actual measurable length
of a part after two or more parts are connected.
WARNING: The opening in the collar around
the chimney at the top of the replace must not
be obstructed. Never use blown insulation to
ll the chimney enclosure.
VENTING INSTALLATION
Continued
Figure 14 - Lineal Gain
LINEAL GAIN
PART NO. DESCRIPTION GAIN
MM33 Fireplace 54 ⅝ "
MM39
MM44/49 Fireplace 63 ½
”
MM63 Fireplace 73 ”
12-12DM Pipe Section 10 5/8 "
18-12DM Pipe Section 16 5/8 "
24-12DM Pipe Section 23 5/8 "
36-12DM Pipe Section 34 5/8 "
48-12DM Pipe Section 46 5/8 "
RLT-12D Round
Termination 7 3/4
"
*
STL-12D
Square Chase-
Top with Slip
Section
7 " to 15 " *
* The lineal gain for the terminations is
measured to the ue gas outlet height.
Hemmed End
12 3/8"
Stainless
Inner Pipe
15" Galvanized
Outer Pipe

www.fmiproducts.com 125160-01A14
Figure 16 - Ceiling Support Pipe 12S-12DM
ASSEMBLY AND INSTALLATION OF DOUBLE
WALL CHIMNEY SYSTEM
Each double wall chimney section consists of a gal-
vanized outer pipe, a stainless steel inner ue pipe
and a wire spacer. The pipe sections must be as-
sembled independently as the chimney is installed.
When connecting chimney directly to the replace,
the inner ue pipe section must be installed rst
with the lanced side up. The outer pipe section can
then be installed over the ue pipe section with the
hemmed end up. Press down on each pipe section
until the lances securely engage the hem on the re-
place starter. The wire will assure the proper spacing
between the inner and outer pipe sections.
Continue to assemble chimney sections as outlined
above, making sure that both the inner and outer
pipe sections are locked together. When installing
double wall snap-lock chimney together, it is impor-
tant to assure the joint between the chimney sections
is locked. Check by pulling chimney upward after
locking. The chimney will not come apart if properly
locked. It is not necessary to add screws to keep the
chimney together (exception, see Figure 15).
VENTING INSTALLATION
Continued
OFFSET RISE CHIMNEY LENGTH
A B 12" 18" 24" 36" 48"
4 3/8" 16 3/8" ELBOW SET ONLY
9 3/4" 25 1/2" 1
12 3/4" 30 3/4" 1
15" 34 3/4" 1
18" 40" 1 1
21 1/4" 46 1/4" 1
23 3/4" 49 1/4" 1 1
27 3/4" 56 3/4" 1
30" 60 3/4" 1 1
33" 66" 1
36" 71" 1 1
38 1/4" 75" 2
41 1/4" 80 1/4" 1 1 1
45" 86 3/4" 2
46 3/4" 89 1/2" 1 1 1
51" 97" 1 1
53 1/4" 101" 2
56 1/4" 106 1/4" 2
59 1/4" 111 1/2" 1 1 1
61 3/4" 115 1/2" 1 2
64 3/4" 120 3/4" 1 2
68 1/4" 127" 2 1
70" 130" 1 1 2
74 1/4" 137 1/2" 1 2 1
76 3/4" 141 1/2" 1 2 1
79 3/4" 146 3/4" 4
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
Figure 15 - Elbow Offset
B
A
Screws
USING ELBOW OFFSETS (30E-12DM)
1. To achieve desired offset, you may install combi-
nations of 12”, 18”, 24”, 36” and 48” length of double
wall pipe (see offset chart and Figure 15).
2. Chimney weight above offset rests on return elbow.
Straps must be securely nailed to rafters or joists (see
Figure 16, details A and B).
3. Maximum length of pipe between supports (return
elbow or 12S-12DM) is 6’ of angle run. Maximum of
two 6’ angle run sections per chimney system (see
Figure 17, page 16).
4. All pipe connections between the offset and re-
turn must be secured with two screws on the outer
pipe only (see Figure 15). Do not penetrate the in-
ner stainless.
2"
Min.
Straps
Detail A
Return Elbow
Detail B
Angle Firestop
See Detail A
See Detail B
Straps
Straps
Straps

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125160-01A 15
VENTING INSTALLATION
Continued
Figure 17 - Typical Offset Terminations
Return
Elbow
Elbow
Return
Elbow
Elbow
6' Max.
6' Max.
A
6' Max.
6' Max.
Return
Elbow
Elbow
Elbow
Return
Elbow
B
6' Max.
6' Max.
C
Elbow
Return
Elbow
Ceiling Support
Pipe 12S-12DM
Figure 18 - Firestop Spacer with Living Space
Above Ceiling
FIRESTOP SPACERS (FS-10)
Firestop spacers are required at each point where the
chimney penetrates a oor space. Their purpose is to
establish and maintain the required clearance between
the chimney and the combustible materials. When the
pipe passes through a framed opening into a living
space above, the restop must be placed onto the ceil-
ing from below as shown in Figure 18.
They also provide complete separation from one oor
space to another or attic space as required by most
codes. When the double wall pipe passes through a
framed opening into an attic space, the restop must be
placed into an attic oor as shown in Figure 19.
Figure 19 - Firestop Spacer with Attic Above
Ceiling
Screws or
Staples
(Min. of 8)
Firestop
Spacer
Existing
Ceiling
Frame
PENETRATING ROOF
To maintain a 2" clearance to the pipe on a roof with
a pitch, a rectangular opening must be cut.
1. Determine center point through which pipe will
penetrate roof.
2. Determine center point of roof. Pitch is distance
the roof drops over a given span, usually 12". A 6/12
pitch means that roof drops 6" for each 12" measured
horizontally down from roof rafters.
3. Use roof opening chart (Figure 20) to determine
correct opening length and ashing required.
4. Remove shingles around opening measured. Cut
out this section.
5. Add next sections of pipe until end penetrates roof
line. Check to see that proper clearances are main-
tained. Extend chimney by adding sections of double
wall pipe until pipe is minimum of 30” above highest
point of roof cutout. Termination and chimney must
extend a minimum of 36” above highest point where
it passes through roof.
Existing
Ceiling
Frame
Screws or Staples
(Min. of 8)
Firestop
Spacer
Pitch Slope Opening
"A" Max.
Used Flashing
Model No.
Flat 0° 19.5" V6F-10DM
0-6/12 26.6° 22' V6F-10DM
6/12-12/12 45.0° 27" V12F-10DM
19.5" Min. 30" Min.
2" Min.
2" Min.
2" Min.
Opening "A"
Figure 20 - Roof Opening Measurements

www.fmiproducts.com 125160-01A16
VENTING INSTALLATION
Continued
Nail Only
Outer
Perimeter
of Flashing
Storm
Collar
Flashing
Cone
Underlap Shingles
at Bottom
Overlap Shingles
Top and Sides
Only
Figure 21 - Flashing Installation
FLASHING INSTALLATION (V6F-10DM OR
V12F-10DM)
Determine the ashing to be used with the roof open-
ing chart. Slide ashing over pipe until base is at
against roof. Replace as many shingles as needed
to cover exposed area and ashing base. Secure in
position by nailing through shingles (see Figure 21).
DO NOT NAIL THROUGH FLASHING CONE.
Installing Flashing on a Metal Roof
When installing the ashing on a metal roof, it is re-
quired that putty tape be used between the ashing
and the roof. The ashing must be secured to the
roof using #8 x 3/4" screws and then sealed with roof
coating to prevent leakage through the screw holes.
A roof coating must also be applied around the pe-
rimeter of the ashing to provide a proper seal.
Storm Collar Installation (SC2-1)
Place storm collar over pipe and slide down until it is
snug against the open edge of the ashing (see Figure
22). Apply waterproof caulk around the perimeter of
the collar to provide a proper seal.
Figure 22 - Storm Collar
Chimney
Pipe Waterproof
Caulk
Storm
Collar Flashing
TERMINATIONS/SPARK ARRESTOR
The replace system must be terminated with the
listed round top or chase terminations. In any case,
refer to the installation instructions supplied with the
termination.
CAUTION:Donotsealopeningsontherooftop
ashing. Follow the installation instructions
provided with the termination being used.
Secure
Termination
to Outer Pipe
with 3 Screws
RTL-12D
Level of
Flue Gas
Outlet
Waterproof
Caulking
Storm
Collar
Flashing
Figure 23 - Termination
Overlap
Shingles (Top
and Sides of
Flashing Base)
CHASE INSTALLATIONS
Instructions for chase installations are included with
the chase style termination chosen. In a multiple
chase installation, be sure to provide adequate dis-
tance between terminations to prevent smoke spill-
age from one termination to another. We suggest
that terminations be separated at least 24", center to
center and stacked at a vertical height difference of
18" (see Figure 24, page 17).
Stainless
Inner Flue
Pipe
Underlap
Shingles

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125160-01A 17
VENTING INSTALLATION
Continued
10 FOOT RULE
All ue gas outlet chimney terminations must extend
a minimum of 3 feet in height above the highest point
where it passes through the roof and must be at least
2 feet above the highest point of the roof that is within
a horizontal distance of 10 feet (see Figure 25).
FINISHING FIREPLACE
Combustible materials, such as wallboard, gypsum
board, sheet rock, drywall, plywood, etc. may not
make direct contact with sides and top around the re-
place face. See clearance requirements in Figures 8
and 9 on page 9. It is important that combustible ma-
terials do not overlap the face itself. Brick, glass, tile or
other noncombustible materials may overlap the front
face provided they do not obstruct essential openings.
When overlapping with a noncombustible facing ma-
terial, use only noncombustible mortar or adhesive.
MASONRY (PRECAST) CHIMNEY
Masonry Chimney may be used instead of the FMI
Chimney System. Parts come in 14" Diameter and
can be obtained by FMI PRODUCTS, LLC. See Ac-
cessories on page 35.
24" Min.
24" Min.
18"
Min.
Typ.
Figure 24 - Multiple Chase Installation
10'
2' Min.
10'
3' Min.
2' Min. 3' Min.
Level of
Flue Gas
Outlet
Figure 25 - 10 Foot Rule
OPTIONAL GAS LINE INSTALLATION
You may elect to add a vented decorative gas appli-
ance (gas log) to your Grand Meridian Fireplace. If
so, follow the installation instructions from the Deco-
rative Gas Appliance manufacturer. Familiarize your-
self with requirements for installation as outlined by
the National Fuel Gas Code, ANSI Z223.1/NFPA 54.
This gas pipe provision should only be used on a
decorative gas appliance.
You can route the gas piping practically anywhere in
the rebox – the oor, back wall or side walls. You
will just need a masonry drill; the instructions from
the gas appliance manufacturer will be very straight-
forward.
Fill in the holes you have drilled around the gas pip-
ing with the regular mortar.
Follow the Gas Log manufacturer’s instructions.
OPTIONAL ELECTRICAL CONNECTION INSTALLATION
Like the gas line, electrical feed lines can be run
through the oor, back wall, or side walls. Follow
local building and electrical code requirements.

www.fmiproducts.com 125160-01A18
SUPPORTING FLOOR SYSTEM INSTALLATION
It is the ultimate responsibility of the installer to en-
sure that proper concrete slab supports are used.
WARNING to the licensed design professional
and/orbuildingcontractor:Itisyourresponsibility
to be certain that the Grand Meridian can be
properly supported by the combustible oor
system on which the replace will rest.
For replace support foundations installed on con-
crete refer to Appendix I and II (pages 42 & 43) for
specic instructions.
REBAR LOCATIONS
Lay-out the position of the replace and drill holes
where the rebar will be located. Secure the #3 rebar
4 inches into the concrete foundation with ITW Epoxy
or Simpson Epoxy. Follow manufacturer’s instruc-
tions for installation of rebar into slab.
WOOD FLOOR
Anchorage of replace to wood oor construction is
required. Refer to Figure 29 on page 20 for anchor-
age dimensions. Four anchors are required to attach
to the sub-ooring framing.
CRAWL SPACE OR UPPER FLOOR:
For installation of rebox over combustible crawl
spaces or upper oors, anchorage of the rebox is
required. Illustrations of examples of possible an-
chorage methods are shown in Figures 26 thru 28
depending upon the type of oor framing. Final meth-
od of anchorage is to be determined by licensed de-
sign professional.
For conventional framing, where the oor joists are
parallel with the sides of the rebox, the addition of
oor joists to align with the anchor brackets allows the
brackets to be directly connected to the oor joists.
NOTE: Additional oor joists may be required to sup-
port the weight of the rebox and chimney. Where
the oor joists run parallel to the front of the rebox,
anchorage can be accomplished in like manner as
shown in Figure 26 using blocking between the oor
joist.
For oors supported by I-Joists, the method of an-
chorage is illustrated in Figures 27 and 28, page 19.
Figure 31, page 20 illustrates the general arrange-
ment of anchorage to oor framing.
It is important to take into consideration that the load
for the Grand Meridian Fireplace must be considered
as additional dead load that will have to be supported
by the oor framing. Additional oor joists or I-joists
may be required as determined by the licensed de-
sign professional.
The dead weights for the replace are noted in Table
I. It is the task and responsibility of the general con-
tractor/installer to see that the proper reinforcement
for weight loads are made by a licensed design pro-
fessional prior to the replace installation.
As stated above, it is desirable to place additional
framing for alignment of anchor rods. Refer to Figure
29, page 20 for anchor rod locations.
Attach the rebox side wall anchors to steel sup-
port frame by inserting all-thread rods through holes
on the bottom ange on the steel support frame as
shown in Figure 32 and 33, page 21. Secure with
two Ø 2" o.d. x Ø 9/16" i.d. x 0.10" Washers and two
1/2"-13 UNC Nuts.
Floor Sheathing
not shown for
clarity
Metal Base
Assembly
EXAMPLE ONLY
2X FLOOR JOIST
2X FLOOR JOIST
A35 Brackets
(16 required)
Figure 26 - Floor Joist Installation

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125160-01A 19
WEIGHT DETERMINATION
The following are dead load weight estimates for the Grand Meridian Fireplace.
Table I
Fireplace Model MM33 MM39 MM44 MM49 MM63
Fireplace Weight 835 lbs. 1,194 lbs. 1,250 lbs. 1,359 lbs. 1,704 lbs.
Mortar, Rebar & Ready Mix
Concrete 200 lbs. 350 lbs. 357 lbs. 364 lbs. 370 lbs.
Firebrick Lining 290 lbs. 333 lbs. 345 lbs. 356 lbs. 435 lbs.
Damper/Anchor Plate 17 lbs. 17 lbs. 17 lbs. 17 lbs. 21 lbs.
Steel Platform 89 lbs. 94 lbs. 96 lbs. 100 lbs. 132 lbs.
Floor Area 37" x 28"
(7.2 ft²)
42" x 28"
(8.12 ft²)
48" x 28"
(9.33 ft²)
53" x 28"
(10.30 ft²)
67" x 28"
(13 ft²)
Other Weight Considerations:
1) Fireplace nished facing (surround): This information needs to be obtained from the contractor.
2) Weight of metal ue or Masonry Chimney System: See chimney manufacturer’s weight specications.
Some chimney systems can weigh up to 50 lbs per lineal foot.
Table II - Deection Limits
Construction L S or W D +L1
Floor Members I/360 --- I/240
1 For wood structural members having a moisture content of less than 16 per cent at time of installation and used under
dry conditions, the deection resulting from L + 0.5D is permitted to be substituted for the deection resulting from
L + D.
Note that FMI PRODUCTS, LLC cannot accept responsibility for structural oor support details. All drawings are
presented as mere illustrations to indicate the presence of the underlying oor system. It is the responsibility of the
general contractor/installer to consult with a local licensed design professional for guidance in building a proper oor
support system.
SUPPORTING FLOOR SYSTEMS INSTALLATION
Continued
Figure 27 - Floor Joist Installation Figure 28 - Floor Joist Installation
I-JOISTS
Anchor
Brackets
I-Joist
Anchoring
Bottom
View
Example Only
I-Joist
Simpson
Strong-Tie
A-35 or
equivalent
I-Joist Anchoring
Top View
Example Only

www.fmiproducts.com 125160-01A20
1/2" Thick Cement Board Dimensions
Model A1 A2 B1 B2
MM63 67" 28" 60" 23"
SUPPORTING FLOOR SYSTEMS INSTALLATION
Continued
Figure 29 - Anchorage Dimensions Figure 30 - Hardware
Figure 31 - Typical Anchorage Layout
COMBUSTIBLE FLOOR INSTALLATION
8"METAL BASE (MMB63)
The Metal Base (MMB63) ensures the minimum
8"clearance above combustible ooring is main-
tained with Grand Meridian Model MM63.
A layer of 1/2" minimum Cement Board (Not Includ-
ed) is required on the top and mid section below as
shown in Figure 32, page 21. The required sizes are
shown in the table below.
IMPORTANT: Remember to tighten up nuts below
the oor after replace installation in order to take up
any slack in the threads.
EMBER PROTECTOR STRIPS:
Ember protector strips (included with Metal Base Kit)
are required between the front of the Fireplace Hearth
and Hearth Extension. A minimum thickness of 26
gauge metal strip at least 4" wide can be used. The
length needs to extend 2 inches beyond each side
of the replace opening. If two strips are used, make
sure they overlap at least two inches in the middle.
The strip is placed about 2" into the underside of the
platform at the front (Figure 10, page 10).
NOTE: When using an on-site constructed hearth ex-
tension, you may use a sand-cement grout between
the hearth and extension instead.
F
10"
4"
A
Model A
MM33 32 ¾"
MM39 38 ¾"
MM44 43 ¾"
MM49 48 ¾"
MM63 62 ¾"
2” min
clearance Fireplace
outline
10”
EXAMPLE ONLY
SECTION VIEW
ROTATED 90CW