Instructions
Vent Free Universal Masonry Firebox
Models MM39/44/49VF
WARNING:
IMPORTANT: READ THESE INSTRUCTIONS
CAREFULLY BEFORE STARTING
If the information in these instructions is
not followed exactly, a fire or explosion
may result causing property damage,
personal injury or death.
INSTALLATION OF THIS FIREPLACE.
This firebox has been tested and approved by PFS
under ANSI Z21.91 for use with any ANSI Z21.11.2
approved gas logs.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
FORUSEONLYWITHALISTEDGAS-FIREDUNVENTED
DECORATIVE ROOM HEATER NOT TO EXCEED 40,000
BTU/HR
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier from
a neighbor’s phone and follow the gas
supplier’s instructions.
DO NOT BUILD A WOOD FIRE.
Carefullyreviewtheinstructionssuppliedwiththedecorative
type unvented room heater for the minimum fireplace size
requirement.
• If you cannot reach your gas supplier,
call the fire department.
DO NOT INSTALL AN APPLIANCE IN THlS FIREBOX
UNLESS THlS FIREBOX MEETS THE MINIMUM
DIMENSIONS REQUIRED FOR THE INSTALLATION.
Installation and service must be
performed by a qualified installer, service
agency, or the gas supplier.
Do not store gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
Installer: Leave these instructions with the consumer.
Consumer: Retain for future reference.
This appliance is only for use with the type
Report No. 08-154
of gas indicated on the rating plate. This
appliance is not convertible for use with
other gases, unless a certified kit is used.
ICC Evaluation Services
Report No. 2401
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Fireplace Parts Diagram
Figure 1
Exploded Diagram
9
5
2X
7
2X
11
6
2
3X
3
7X
8X
12
3A
1
2X
WARNING
Failure to position the parts in
accordance with these diagrams or
failure to use only parts specifically
approved with this appliance may result
in property damage or personal injury.
2
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MM39/44/49VF Fireplace Parts List
ITEM P/N
DESCRIPTION
QTY
MFP39-1
MFP44-1
MFP49-1
1
HEARTH (Left or Right)
2
MFP39-2
MFP44-2
MFP49-2
2
REAR WALL
4
7
1
1
1
MFP39-3
MFP44-3
MFP49-3
3
SIDE WALL
MFP39-3A
MFP44-3A
MFP49-3A
3A
5
SIDE WALL with 4” hole for Air Kit
DOME REAR - LOWER
LINTEL
MFP39-5
MFP44-5
MFP49-5
MFP39-6
MFP44-6
MFP49-6
6
MFP39-7
MFP44-7
MFP49-7
7
DOME SIDE - LOWER
DOME TOP
2
1
MFP39-9
MFP44-9
MFP49-9
9
125122-01
11
12
RATING PLATE
1
8
#3 REBAR (Ø3/8”) x 36”
Optional Outside Ø4”
Combustion Air Kit
Model No.: MM4AK
(Ø4” Ducting not included)
MM(39,44,49)SHBL- Herringbone
MM(39,44,49)FRBL- Running Bond
Refractory Firebrick Liners
(Herringbone Pattern shown, also available
in Running Bond - see Pg.16)
3
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General Information
Product Overview
Introduction
Grand Meridian fireplaces are designed as Factory Built - Field
Assembled Fireplaces to be installed on both combustible and
non-combustible floor systems. They have been extensively
tested to perform with excellent results in this environment.
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 PRODUCTS, LLC.
You may have thought long and hard before you chose the
fireplace which would grace your home. Rest assured that
every component of the Fireplace has been tested to ensure
long-term durability.
Attention: Be advised that all the illustrations in this manual
are for general reference only. They are not drawn to scale.
Actual design elements will vary from case to case. Pay
attention to specified minimum clearances as they relate to
combustible materials.
Before Beginning the Installation
Read these instructions carefully before beginning the
installation of this Vent-Free fireplace. Also read the gas
log appliance manufacturer’s literature regarding sizing and
suitability for installation into this Enclosure prior to installation.
Statement of Intended Use:
The Grand Meridian Vent-Free Universal Masonry Fireplace is
a modular refractory masonry unit designed for field assembly.
The firebox 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 vent-free decorative gas log
enclosure.
Figure 2
In addition to the basic enclosure, a standard
1-1/8” thick, high temperature refractory brick is
required to line the interior of the firebox.
These fireplaces are not intended to serve as
a primary heat source, rather, the fireplace was
expressly created as a supplemental source of
heat.
23 1/8"
W3
W2
W1
The Grand Meridian Fireplace is Designed for
Use Only with any Vent free decorative gas log
sets meeting standard ANSI Z21.11.2
Vent free decorative gas log sets meeting
standard ANSI Z21.11.2, are supplied by others
and are limited to any listed vent-free gas-fired
log sets with heat input ratings up to 40,000 Btu/
hr.
SECTION A-A
4 1/2"
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.
46 3/4"
38 3/4"
32 5/8"
7 1/8"
A
A
21"
28"
OUTSIDE AIR ACCESS
Model
W1
43”
48”
53”
W2
W3
MM39VF
MM44VF
MM49VF
39”
44”
49”
29-1/4”
34-1/4”
39-1/4”
4
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Safety Information
The Vent free decorative gas log set must have an
DANGER:
Carbon monoxide poisoning may lead to
death!
oxygen depletion sensor (ODS) pilot light safety system.
The ODS shuts down the fireplace if not enough fresh
air is available. See Air for Combustion and Ventilation,
page 8. If the fireplace keeps shutting off, see appliance
manufacturers’ troubleshooting instructions.
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoning resemble the flu, with headaches, dizziness, or
nausea. If you have these signs, the fireplace may not be
working properly. Get fresh air at once! Have the fireplace
serviced.
Note: Some people are affected more than others by carbon
monoxide. These may include pregnant women, people with
heart or lung disease, are anemic, anyone under the influence
of alcohol, and those at high altitude.
9. Do not run fireplace
•
•
Where flammable liquids or vapors are used or stored.
Under dusty conditions.
10. Do not use this fireplace to cook food or burn paper or
other objects.
11. Never place any objects in the fireplace or on logs.
12. Fireplace screens must be provided and are to be closed
before operating the decorative room heater. If doors are
installed, they must be open during operation. Fireplace
front and screen become very hot when running fireplace.
Keep children and adults away from hot surfaces to avoid
burns or clothing ignition. The fireplace will remain hot
for a time after shut down. Allow surfaces to cool before
touching.
IMPORTANT: Read this owners manual carefully
and completely before trying to assemble, operate,
or service this fireplace. Improper use of this
fireplace can cause serious injury or death from
burns, fire, explosion, electrical shock, and carbon
monoxide poisoning.
13. Carefully supervise young children when they are in the
room with the fireplace.
General Safety Concerns
14. Do not use fireplace if any part has been exposed to or
under water. Immediately call a qualified service technician
to inspect the fireplace and to replace any part of the control
system and gas control which has been under water.
1. If you smell gas
•
•
•
Shut off gas supply.
Do not try to light any appliance.
15. Do not operate the fireplace if any log is broken. Do not
operate the fireplace if a log is chipped (dime-sized or
larger). Verify proper log placement prior to operating
appliance.
Do not touch any electrical switch; do not use any
phone in your building.
•
•
Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
16. Turn fireplace off and let cool before servicing. Only a
qualified service person should service and repair the
fireplace.
If you cannot reach your gas supplier, call the fire
department.
2. This fireplace shall not be installed in a bedroom or
bathroom.
17. Operating the fireplace above elevations of 4,500 feet
may cause pilot outage.
3. Never install the fireplace
DO NOT USE OR STORE GASOLINE OR OTHER
FLAMMABLE LIQUIDS OR GASES IN OR NEAR THE
FIREPLACE!
•
•
In a recreational vehicle.
Where curtains, furniture, clothing, or other flammable
objects are less than 36 inches from the front, top, or
sides of the fireplace.
ATTENTION:Afire or an explosion could occur causing property
damage, injury or loss of life if you do not follow the information
in this manual!
•
•
In high traffic areas.
In windy or drafty areas.
NOTE: THIS MANUAL MUST BE REPRODUCED ONLY IN
ITS ENTIRETY.
4. Do not use this fireplace as a wood-burning fireplace.
5. Do not add extra logs or ornaments such as pine cones,
vermiculite, or rock wool. Using these added items can
cause soot build-up.
Carefully review the instructions supplied with the decorative
type unvented room heater for the minimum firebox size
requirement.
DO NOT INSTALL THE APPLIANCE IN THIS
FIREBOX UNLESS THIS FIREBOX MEETS THE
MINIMUM DIMENSIONS REQUIRED FOR THE
INSTALLATION.
6. This fireplace is designed to be smokeless. If logs appear
to smoke, turn off fireplace and call a qualified service
person.
7. Avoid any drafts that alter burner flame patterns. Do not
allow fans to blow directly into the fireplace. Do not place
a blower inside burn area of the firebox. Ceiling fans may When choosing a location for your fireplace, avoid locations
create drafts that alter burner flame patterns. Soot build-up that are subject to too much draft or locations where you may
and improper burning will occur. Soot build-up can settle on encounter obstructions that may be in the way of the fireplace
household surfaces outside the fireplace.
once installed.Always check local codes and familiarize yourself
with the surrounding construction.
8. This fireplace needs fresh air ventilation to run properly.
5
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Projected installations can extend any distance into the room.
A projection may be ideal for a new addition on an existing,
finished wall.
Location
Note: You may need to provide combustion and ventilation air
from an outside source to adequately satisfy local codes so Corner installations make use of space that may not normally
avoid installing a combustion air inlet where the opening could be used and provides a wider and more efficient range for heat
be blocked by snow, bushes or other obstacles. Note that the disbursement.
access for outside air inlet is located on the right hand side of
the fireplace.
An internal wall installation provides a discreet option for
room separation and can also be ideal as an addition to an
existing wall.
Figure 3
Internal
Wall
Installation
IMPORTANT:Vent-free heaters add moisture to the air. Installing
a fireplace in rooms without enough ventilation air may cause
mildew to form from too much moisture.
Corner
Installation
IMPORTANT: Make sure the fireplace is level. If the fireplace is
not level, the log set will not work properly.
Attention: You may need a building permit to install a Grand
Meridian fireplace. Check with the local jurisdiction before you
get started.
Flush
Installation
Full
Projection
Installation
Supporting Floor Systems
Floor Framing
A flush installation is recommended where living space is
It is important to take into consideration that the load for the
Grand Meridian Fireplace is considerable, but, more important,
that it is a dead load that will have to be absorbed by a relatively
small amount of existing floor space.
limited or at a premium. Check local codes for any restrictions.
Figure 4
It is the ultimate responsibility of the installer to ensure that
proper concrete slab supports are used.
WARNING to the licensed design professional and/or building
contractor: It is your responsibility to be certain that the Grand
Meridian can be properly supported by the combustible floor
system on which the fireplace will rest.
H
D
For fireplace support foundations installed on concrete refer to
Appendix I and II (pages 17 & 18) for specific instructions.
W
Rebar locations
Lay-out the position of the fireplace 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 instructions for installation of rebar into slab.
Model
W
H
D
MM39VF
MM44VF
MM49VF
43”
48”
53”
41”
41”
41”
28”
28”
28”
Wood Floor
Anchorage of fireplace to wood floor construction is required.
Refer to Figure 8 for anchorage dimensions. Four anchors are
required to attach to the sub-flooring framing.
Crawl Space or Upper Floor:
For installation of firebox over combustible crawl spaces or
upper floors, anchorage of the firebox is required. Illustrations
of examples of possible anchorage methods are shown in
Figures 5 thru 7 depending upon the type of floor framing. Final
method of anchorage is to be determined by licensed design
professional.
6
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For conventional framing, where the floor joists are parallel
with the sides of the firebox, the addition of floor joists to align
with the anchor brackets allows the brackets to be directly
connected to the floor joists.
Figure 6
I-Joist Anchoring
Top View
Note that additional floor joists may be required to support
the weight of the firebox and chimney. Where the floor joists run
paralleltothefrontofthefirebox,anchoragecanbeaccomplished
in like manner as shown in Figure 5 using blocking between the
floor joist.
Simpson
Strong-Tie
A-35 or
Example Only
For floors supported by I-Joists, the method of anchorage is
illustrated in Figures 6 and 7. Figure 10 illustrates the general
arrangement of anchorage to floor framing.
equivalent
Figure 7
Anchor
Brackets
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 floor framing.
Additional floor joists or I-joists may be required as determined
by the licensed design professional.
I-Joist
Anchoring
Bottom
View
The dead weights for the fireplace are noted in Table I. It is
the task and responsibility of the general contractor/installer to
see that the proper reinforcement for weight loads are made by
a licensed design professional prior to the fireplace installation.
As stated above, it is desirable to place additional framing
for alignment of anchor rods. Refer to Figure 10 for anchor rod
locations.
Example Only
Figure 5
Anchor Bracket
Assembly
A35 Brackets
(16 required)
2X FLOOR JOIST
EXAMPLE ONLY
2X FLOOR JOIST
Floor Sheathing
not shown for
clarity
7
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Grand Meridian Weight Determinations
The following are dead load weight estimates for the Grand Meridian Fireplace.
Table I
Fireplace Model
Fireplace Weight
MM39VF
MM44VF
MM49VF
809 lbs.
896 lbs.
987 lbs.
Mortar, Rebar &
Ready Mix Concrete
350 lbs.
333 lbs.
357 lbs.
345 lbs.
364 lbs.
356 lbs.
Firebrick Lining
Floor Area
43” x 28” (8.12 ft²) 48” x 28” (9.33 ft²) 53” x 28” (10.30 ft²)
Other Weight Considerations:
Fireplace finished facing (surround): This information needs to be obtained from the contractor.
Table II - Deflection 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 deflection resulting from L + 0.5D is permitted to be substituted for the deflection resulting from L + D.
Note that FMI PRODUCTS, LLC cannot accept responsibility for structural floor support details. All drawings are presented as
mere illustrations to indicate the presence of the underlying floor system. It is the responsibility of the general contractor/installer
to consult with a local licensed design professional for guidance in building a proper floor support system.
Figure 8
Figure 9
4"
A
Model
MM39VF
MM44VF
MM49VF
A
10"
38-3/4”
43-3/4”
48-3/4”
Figure 10
EXAMPLE ONLY
Fireplace
outline
Typical Anchorage
Layout
10”
SECTION VIEW
ROTATED 90CW
8
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Clearances
Figure 11
The Importance of Clearances
Warning to the structural engineer and/or building contractor:
It is your responsibility to be certain that the Grand Meridian
Fireplace can be properly supported by the combustible floor
system on which the fireplace will rest. Be advised that this
engineering equation will be in addition to any live or dead
weights that the floor has to carry.
NON-
COMBUSTIBLE
FACIA
1-1/2”
8” MIN
Clearances to Combustibles
Nothing is more important than paying strict attention to
giving clearance between fireplace surfaces and surrounding
“combustibles” the most common of which are:
Figure 12
•
•
•
•
•
•
•
Drywall
12” MIN
Wood flooring
Plywood sub-flooring
Framing materials
Particle board
Mill board
NON-COMBUSTIBLE
FACIA
1-1/2”
Clearance to combustible trim are those distances required
to ensure that combustible mantle and facing material will not
be exposed to excessive heat while the unit is operating.
Plywood paneling
These clearances should be adequate to prevent
discoloration or warping of trim facings due to heat. However,
circumstances unique to each installation create variables that
may be beyond the scope of this manual. Therefore be sure
to follow gas log appliance manufacturer’s explicit installation
instructions regarding all minimum trim facing, mantle height
and side wall clearance requirements.
Required Clearances are:
Unit front, sides, rear: ..........................................0"
Combustible Floor: .............................................0"
Combustible Sheathing above opening top: .......8" (200 mm)
Sheathing or trim to opening sides: ....................8" (200 mm)
Mantle above opening: .......................................12" (300 mm)
Opening to sidewall: ...........................................24" (500 mm)
Insulation from firebox: .......................................0"
Figure 13
The Grand Meridian Vent-Free fireplace may be installed
at “zero clearance” to plywood sheathing and to uninsulated
wood framing members at the unit bottom, sides, rear and top
when used for enclosing any listed vent-free gas-fired log set
with maximum heat input ratings up to 40,000 Btu/hr. However,
when a Vent-Free fireplace is to be installed on carpeting, wood
flooring, or any combustible material other than tile or concrete,
the Vent-Free fireplace shall then be installed on a metal or
wood platform extending the full width and depth of the Vent-
Free fireplace.
Parts of the combustible mantle assembly located above
and projecting more than one and one-half inches (1-1/2”)
inches from the firebox opening shall be kept at least twelve
inches (12”) from the top of the opening.
Clearance to Combustible Trim:
Grand Meridian Vent-Free Fireplaces are designed to be
custom finished with facing trim and mantle to be an owner
option. However, all such trim material must meet standard
fireplace code requirements.
Mantle shelves with horizontal projection of ten inches (10”)
from the face of the fireplace must be held to a minimum vertical
distance of twenty inches (20”) from the top of the finished
fireplace opening.
Non-combustible facing material must be applied to a
minimum of eight inches (8”) beyond the sides of the finished
opening of the Vent-Free fireplace and non-combustible facing
material must cover a minimum of twelve inches (12”) above
the finished opening of the installed unit.
Note: Mantle height clearances may vary among gas log
appliance manufacturers or with the use of firebox canopies.
Be sure to follow the gas log appliance manufacturer’s
explicit installation instructions for mantle height clearance
requirements.
9
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Interior Wall Materials:
Air for Combustion and Ventilation
Wall materials, such as drywall, should be set flush with
the rough front face of the Vent-Free fireplace. This will allow
for placement of required non-combustible surround material in
such a way that the surround material can lay flat against the
finished wall surface and also align with the leading edge of the
fire brick interior of the Vent-Free fireplace (see Figure 15).
Energy efficient homes require homes to be airtight but at the
same time provide sufficient fresh air to breathe. Fresh air
enters the home through air conditioning duct vents, around
doors and windows but also must provide enough fresh air for
proper combustion on all fuel-burning appliances in the home.
Exhaust fans, fireplaces, clothes dryers, and fuel-burning
appliances draw air from the house to operate. You must provide
adequate fresh air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
Trim Facings:
Parts of the combustible mantle assembly located along
the sides of the firebox opening, which project more than one
and one-half inches (1-1/2”) from the face of the fireplace, shall
be kept at least eight inches (8”) from the firebox opening.
Figure 16
Exterior
Non-combustible
Flex Hose
Adjoining Room Walls:
Interior wall surfaces of adjoining room walls must be at a
minimum horizontal measure of twenty four inches (24”) away
from the finished opening of the Vent-Free fireplace.
W
Providing Adequate Ventilation
Figure 14
In accordance with the National Fuel Gas Code NFPA 54/ANSI
Z223.1, Section 5.3, Air for Combustion and Ventilation, all
spaces in homes fall into one of the three following ventilation
classifications:
1. Unusually Tight Construction
2. Unconfined Space
D1
FRAMING
3. Confined Space
The following information will help you classify your space and
provide adequate ventilation.
Unusually Tight Construction
1-1/2”
8” MIN. NON-COMBUSTIBLE MATERIAL
The air that leaks around doors and windows may provide
enough fresh air for combustion and ventilation. However,
in homes of unusually tight construction, you must provide
additional fresh air. Unusually tight construction is defined as
construction where:
Model
MM39VF
MM44VF
MM49VF
W
D1
73-1/2”
77”
43”
48”
53”
a. Walls and ceilings exposed to the outside atmosphere have
a continuous water vapor retarder with a rating of one perm*
or less with openings gasketed or sealed and...
80-1/2”
b. Weather stripping has been added on openable windows and
doors and...
Figure 15
c. Caulking or sealants are applied to areas such as joints
around window and door frames, between sole plates and
floors, between wall-ceiling joints, between wall panels, at
penetrations for plumbing, electrical, and gas lines, and
other openings.
FRAMING
1-1/2”
* A perm is a unit of permeance or water vapor transmission,
the US perm-inch is defined as the passage of 1 grain of vapor
through 1 square foot of 1 inch thick material in 1 hour under a
pressure difference of 1 inch of mercury.
8” MIN. NON-COMBUSTIBLE MATERIAL
20”
MIN
If your home meets all the three criteria above, you must provide
additional fresh air.
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Unconfined Space
4. Compare the maximum Btu/Hr the space can support with
the actual amount of Btu/Hr used.
An unconfined space has a minimum total air volume of
50 cu.ft. (cubic feet) for each 1,000 Btu/Hr input rating of all
appliances in the total space (cu.ft. = length x width x height
of space). Include adjoining rooms only if there are doorless
passageways or ventilation grills between the rooms. If the Btu
per 50 cu.ft. is less than 1,000 Btu/Hr, then fresh air will be
provided by the natural air flow into the house.
_________ Btu/Hr (maximum the space can support)
_________ Btu/Hr (actual amount of Btu/Hr used)
Example:
64,000 Btu/Hr (maximum the space can support)
76,000 Btu/Hr (actual amount of Btu/Hr used)
Confined Space
A confined space has an air volume of less than 50 cu.ft. for
The space in the previous example was a confined space
each 1,000 Btu/Hr input rating of all appliances in the space (cu. because the actual Btu/Hr used was more than the maximum
ft. = length x width x height of space). Include adjoining rooms Btu/Hr the space could support. If you find you have a Confined
only if there are door less passageways or ventilation grills Space, you must provide additional fresh air. Your options are
between the rooms.
as follows:
a) Re-work worksheet, adding the space of an adjoining room
that may not have qualified for the extra volume. If the extra
space provides enough volume to convert the area to an
unconfined space, remove door to adjoining room or add
ventilation grills between rooms.
Determining Total Air Volume
Use this work sheet to determine if you have a confined
or unconfined space. The space to be considered includes not
only the room in which you will install the fireplace but also any
adjoining rooms with ventilation grills between them or door
less passageways.
b) Vent room directly to the outdoors.
c) Install a lower Btu/Hr gas log (if lower Btu/Hr size makes
room unconfined).
1. Determine the total volume of your space
L x W x H = _______ cu.ft.
If the actual Btu/Hr used is less than the maximum Btu/Hr the
space can support, the space is an unconfined space. You will
need no additional fresh air ventilation.
Example: Space size = 20 ft. long x 20 ft. wide x 8 ft. high
(ceiling height) = 3,200 cu.ft.
If adjoining ventilation to adjoining room is supplied with
grills or openings, add the volume of these rooms to the total
volume of the space.
WARNING: If the area in which the heater may be operated
is smaller than that defined as an unconfined space, provide
adequate combustion and ventilation air by one of the methods
described in the National Fuel Gas Code, ANSI Z223.1 Section
5.3 or applicable local codes.
2. Divide the space volume by 50 cu.ft. to determine the
maximum Btu/Hr the space can support.
_______ cu.ft. (volume of space)
Local codes may have stricter definitions for confined space
and/or for unusually tight construction. Installing our optional
outside air kit may allow the space to be classified as not being
unusually tight or being an unconfined space. Check you local
codes.
50 cu ft. = (Maximum Btu/Hr the space can support)
Example: 3200 cu ft. (Volume of space) / 50 cu. Ft. = 64.0 or
64,000 (maximum Btu/Hr the space can support.)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free fireplace
Gas water heater*
Gas furnace
Vented gas heater
Gas fireplace logs
Other gas appliances*
Total =
_______ Btu/hr
_______ Btu/hr
_______ Btu/hr
_______ Btu/hr
_______ Btu/hr
_______ Btu/hr
_______ Btu/hr
IMPORTANT: Do not provide openings for inlet or outlet air
into an attic if the attic has a thermostat-controlled power vent.
Heated air entering the attic will activate the power vent.
Example:
Gas water heater 40,000 Btu/hr
Vent-free fireplace +36,000 Btu/hr
Total = 76,000 Btu/hr
* Do not include direct-vented gas appliances. Direct vent draws
combustion air from the outdoors and vents to the outdoors.
11
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directly to the components where they come together. As a
rule, you can figure that you should lay down about ½” (one-
half inch) of a thread of mortar. The line of mortar should be
approximately ½” (one-half inch) away from all the edges of
each separate component.
Important Pre-installation Information
Overview
You will find that the Grand Meridian Fireplace is designed for
complete assembly at your construction site with all necessary
items delivered consisting of interlocking precast parts, 50 lbs.
of mortar and rebar.
The mortar has a considerable amount of holding power so
do not overload the components with too much mortar.
The parts of the fireplace are made of incredibly strong blend of
specialty cement and a lightweight aggregate.
The design of the fireplace calls for the installation of a refractory
fire brick liner. This should be a minimum of 1-1/8” thick. The
liner will be applied within the walls of the firebox. Modular
firebrick panels are also available from FMI PRODUCTS, LLC.
4) You will notice that some mortar will “ooze out” when you
place the next component on top of or next to the component
you previously place. This is to be expected – it means the
two pieces have properly bonded -- and you will want to
swipe the excess away with a trowel. It is never intended
that the surfaces of the components are to be completely
covered with mortar.
Additional Materials Required:
1) Ready-Mix concrete - 2 cu.ft.
5) Do not apply the mortar in thick bands even if the component
you are working with is larger than the rest. You will want to
apply “stripes” of mortar in these situations.
SURFACE CRACKS - The Grand Meridian FIREPLACES are
manufactured using high quality materials. During the drying
process, surface cracking may occur. These small cracks (under
1/16” will not affect the fireplace safety or performance). During
the assembly process, fill surface cracks with thin-set mortar
and brush when drying for a smooth surface finish.
6) Making Sure Components Are Level – It is extremely
important that you pay careful attention to how you are
assembling the fireplace. Since every component builds
on the next, it is critical, that from the beginning, you are
checking that the components are fitting together to be level
and flush. If you have to make any kind of an adjustment,
do not try to do it “by loading an opening” with mortar. That
is completely unacceptable, resulting in a fireplace that will
not be plumb or level. What you are advised to do is make
use of shims. You will find these supplied with the fireplace
and you can nudge them in between openings to achieve
the precision you need in making component adjustments.
Leveling and Aligning Components:
It is important to assemble all Vent-Free fireplace components
flush, level and square. Since it is not intended that mortar
be used to lay a mortar joint of any measurable thickness as
is typical when laying brick or concrete block, adjustments in
component height and level alignments are accomplished with
the use of small shims. These shims can be tapped into place to
level and align components. Once the Mortar is set, the shims
must be removed completely.
7) Once you have removed the shims, you will want to cover
any gaps that may have resulted with the grout.
Be sure to re-grout any and all gaps where shims have been
inserted and then removed or where contact surfaces have
been separated by shim leveling.
Warning: All surfaces where grout is applied must
have water sponged on several minutes prior to
assembly. This will minimize cracking of grout joint
and provide maximum strength.
Field Assembly Procedures
1) Mixing the mortar – You will require a 50 lb. bucket of mortar
which will be more than enough to adequately affix all the
fireplacecomponents,onetothenext.Themortarispremixed
anddryandistobeusedtoadhereallthefireplacecomponents.
Be sure to use clean water and work it up into a mixture that
is pasty but not lumpy. If it is too thin, the components will
not adhere. Some trial and error may be necessary. You will
want to apply the mixture with a standard grout bag.
2) Moisten all surfaces which will have grout applied prior
to assembly. This will minimize shrinkage and cracks
developing in the joint areas. Best way to accomplish this is
with a bucket of water and a large sponge. Dip sponge into
water and apply a liberal amount of water to the grout joint
surface several minutes before the part is to be assembled.
The water will absorb into the surface allowing the grout to
properly cure.
3) Assembly of the Components – Once you have found the
proper consistency of the mixture, load it into the grout bag
and then place the components together applying the mixture
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Hearth section shown prepared
for Right Side position
Fireplace Assembly Procedures
Figure 18
TOOLS NEEDED FOR INSTALLATION:
•
•
•
•
•
•
•
•
•
One 4 ft. level
Roto-hammer with ½” drill bit
Drill motor with mixer blade to mix Mortar
Two empty 5 gallon buckets to mix Mortar
One wheelbarrow and shovel to mix concrete
Grout bag
1/2” MORTAR
BEAD TYPICAL
Triangular masonry trowel
APPLY MORTAR
BEAD TO ALL
MATING SURFACES
1/2” AWAY
FROM EDGES
Rubber hammer
Sponge and 2 water buckets to wipe down and moisten
parts prior to applying mortar
3) Align Right Side Hearth to the outline created. The overall
width should allow for an approximate gap of 1/8” between
slabs for the additional mortar to unite the remaining slab.
Check for surface flatness, level if necessary.
MATERIALS NEEDED FOR INSTALLATION:
• Epoxy for securing rebar in footing / foundation
4) Apply mortar to the remaining Hearth except this time apply
•
Three (3) - 90 lb. bags of ready mix concrete with ¼” or
smaller aggregate
beading on surface to be facing floor as shown in Figure
19.
MATERIALS INCLUDED:
Hearth shown prepared
for Left Side position
Figure 19
•
•
•
8 - ⅜” Rebar x 28” Long
8 - ⅜” Rebar x 12” Long
1 - 50 lb. bucket Mortar
•
20 - Small Wood Shims
Note - Wipe excess water from surface prior to applying grout.
This will help grout to adhere to surface during assembly.
Warning: All surfaces where grout is applied must have water
sponged on several minutes prior to assembly. This will minimize
cracking of grout joint and provide maximum strength.
Place the Grand Meridian Fireplace hearth base on top of your
non-combustible floor. For concrete slabs, supporting floor
needs to be rated at ASTM 90.
5) Before installing side walls, confirm placement of outside
combustion air access (if required), this can be installed
either side depending on which side is accessible to outside
combustion air (all diagrams in this manual show the
combustion air inlet hole on the right side). Prepare side
wall and rear wall mating surfaces with the prepared mortar
and begin assembly.
1) Draw an outline of the hearth area based on the dimensions
shown in Figure 17. Position Hearth slabs and mark rebar
center locations. Drill 4 inches into concrete slab and secure
the 8 pieces of 12 inch rebar with epoxy.
Figure 17
Left Side Hearth 2nd
Right Side Hearth 1st
Side Wall shown prepared for Right Side Air
Access. For Left Side bead opposite side.
1/2” AWAY
FROM EDGES
Apply mortar
between joints
28”
Figure 20
Model
W
MM39VF 43”
MM44VF 48”
MM49VF 53”
6) Keep the assembly of the next sections of the firebox side
walls moving up, keeping components moist, mixing mortar
as you need it and threading the mortar appropriately as
you stack each section, one onto the next. Constantly check
for squareness and levelness while building each course of
block. As you complete each section, make certain that you
adhere the mortar at each and every joint.
W
12 inch rebar
2) Mix a batch of mortar and prepare Right Side Hearth bottom
surface to be bonded as shown in Figure 18.
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Figure 21
Apply mortar
Figure 23
Lower
Rear Dome
Rear Wall
Lintel
Side Wall
Side Wall
Apply
mortar
11) Place Lower Side Domes between Lintel and Lower
Rear Dome to verify fit. The face with the rating plate faces
the inside of the firebox as shown in Figure 24. Remove
and prepare mating surfaces with mortar. Assemble Lower
Dome Sides and check that all four top surfaces are level
with each other. Shim if necessary.
Combustion Air Access
Right or Left (Right shown).
7) When you have arranged all the components into place
and you are working on the top rear firebox, check that
your work is level. If you need to, you can make some
adjustments in the top surface of the box assembly
simply by using shims. Once you are satisfied with the
degree of levelness, you can address any gap that may
have occurred with an appropriate amount of mortar.
Although you are cautioned to use mortar sparingly
because it does have such holding power, you should
look over the firebox assembly at the end and fill any
gaps with mortar especially at joint connections.
Adjustments must be made to ensure the fireplace is level
and square while the mortar is still wet.
Figure 24
Lower Dome Sides
(Rating Plate faces inside)
8) After fourth row of walls are in place, add 36” rebar to all
cells as shown in Figure 22. The rebar should enter the
holes in the Hearth and lie adjacent to the 12” rebar secured
in subfloor. Then fill cells with approx. 2 cu.ft. Ready-Mix
Concrete.
Add rebar after
fourth row
Figure 22
12) Now install the Smoke Dome Tops. Align outer edges with
Lower Dome Sides. Check for flatness and squareness.
12 inch
rebar
Figure 25
9) Temporarily place Lintel between side walls, making sure
it is flush to the front and snug at the inside. Check for
alignment. Remove Lintel and apply mortar on surfaces to
be mated. Install Lintel.
10) Install Lower Rear Dome flush to the rear walls as shown in
Figure 23.
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Raised and Flush Hearth Application:
Gas Piping Installation
The provision for installation of a gas pipe is only for
connection to a Vent free decorative gas log sets meeting
standard ANSI Z21.11.2
If you would prefer to have a raised hearth, the Vent-Free box
can be raised to the desired height using wood studs or concrete
blocks.
Figure 26
Familiarize yourself with requirements for installation as
outlined by the National Fuel Gas Code, ANSI Z223.1.
This gas pipe provision must only be connected to an
approved vent-free gas log heater certified to ANSI Z21.11.2
heater standard. Check local building codes for specific pipe
and material requirements.
Concrete Block
Raised Platform
1) Gas piping can be routed from the floor, rear or side walls.
With a masonry drill, follow the instructions from the gas
appliance manufacturer. Any wires must be routed through
separate conduit. Make sure provisions are made for access
to manual shut-off valve.
When determining raised hearth height, be sure to allow
for the 3” thick firebox hearth and 1-1/2” thick firebrick floor, in
addition to the height of base platform.
CSA Certified Manual
Shut-off Valve
Figure 28
Tee-joint
Figure 27
Approved
Flexible
Gas Line
Sediment
Trap
Raised Wood
Platform
3”
Minimum
Pipe
Nipple
From External
Regulator
(11-14” W.C. pressure)
Cap
2) After routing piping, fill hole around pipe with mortar.
For a “flush hearth” (fireplace floor flush with the room’s
floor) the base plate can be omitted from the assembly and the
firebox walls built directly on the concrete support slab. The
fire brick floor of the firebox is then set directly to the concrete
support slab. This makes the fireplace finished fire brick floor
approximately one and one-half inches (1-1/2”) above the top
of the concrete support slab.
Electrical Line Feed
Electrical line feed can be routed through the Standard
firebox back wall, side walls or floor by drilling an appropriately
sized hole using a masonry drill bit. Be sure to follow the
Vent free decorative gas log Manufacturer’s explicit electrical
line connection instructions for vented masonry fireplace
installations.
NOTE: Gas line and electric line must be routed through
separate access holes.
Figure 29
Gas or
Firebrick Side
Electric Line
IMPORTANT: All access holes must be grouted with mortar to
seal any gaps or cracks.
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Firebrick Liner Installation
Initial Fireplace Operation
Follow the gas appliance manufacturers’ requirements
for lighting and operating your vent free log. When first operating
the fireplace, open a window in the room to allow smells created
from the heater and fireplace curing.
It is required that the interior sides, rear and bottom be lined
with minimum 1-1/8” thick firebrick. Pre-fabricated fire brick liner
walls can make the installation easier.
All required through-wall accesses (gas and electrical
line feeds and combustion air supply access holes) should be
drilled before the required fire brick lining is installed.
We suggest operating the heater for several 30 minute
intervals allowing the fireplace to cool for an hour in between.
This will allow any moisture in the brick and fireplace to
escape.
Modular Firebrick Lining
Keep in mind that it may require several operations
to completely remove any smell from the operation of a vent-
free heater and fireplace. If this condition continues, contact
your gas appliance dealer to inspect the gas heater for proper
operation.
If using FMI PRODUCTS, LLC Firebrick Liners, simply use an
extra bucket of mortar. Install Hearth Liner first, rear next and
sides last. Consider if brackets for grates will be required, also
if pre-drilling is required for gas lines, electrical or if the outside
combustion air kit is to be installed.
The following Firebrick Patterns are available from FMI
PRODUCTS, LLC:
Technical Service
MM(XX)SHBL- Herring Bone
You may have further questions about installation, op-
eration, or troubleshooting. If so, contact FMI PROD-
UCTS, LLC at 1-866-328-4537.
Figure 30
When calling please have your model and serial num-
bers of your fireplace ready.
You can also visit our web site at
Replacement Parts
If this product is missing a part or has a broken com-
ponent, please do not return it to the store. Call FMI
PRODUCTS, LLC at 1-866-328-4537 to answer
questions and replace parts under warranty.
MM(XX)FRBL- Running Bond
Figure 31
Note: Use only original replacement parts. This will
protect your warranty coverage for parts replaced
under warranty.
When calling, have ready:
• your name
• your address
• model and serial numbers of your fireplace
• how fireplace was malfunctioning
• purchase date
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Warranty
KEEP tHIS Warranty
Model (located on product or identification tag)_________________
Serial No. (located on product or identification tag)______________
Date Purchased __________________
Keep receipt for warranty verification.
FMI PrODUCtS, LLC LIMItED WarrantIES
New Products
FMI PRODUCTS, LLC warrants all Grand Meridian Fireplaces to be free from defects in materials that adversely affect fireplace
performance for a period of ten (10) years from the date of purchase, subject to the terms and conditions of this limited warranty.
FMI PRODUCTS, LLC does not warrant accessory chimney, outside air ducts, gas control or burner system, ceramic logs, and
devices not manufactured by FMI PRODUCTS, LLC. Valves and electronic parts are only covered for one year parts and labor per
the log set manufacturer’s warranty.
This warranty covers only products manufactured by FMI PRODUCTS, LLC, specifically the modular concrete firebox, and NO
WARRANTY, EXPRESS OR IMPLIED, EXTENDS TO ANY OF THE HARDWARE, FOUNDATION, VENTING, DUCTS, OR
ACCESSORIES. THIS WARRANTY DOES NOT COVER DRAFTING, SMOKING, OR SOOTING OF THE FIREPLACE SYSTEM.
Factors beyond the manufacturer’s control may affect drafting, smoking, and sooting, FMI PRODUCTS, LLC cannot guarantee
these aspects of performance.
If a component is found to be defective under the terms of this warranty, the party this warranty is extended to shall notify FMI
PRODUCTS, LLC, 2701 S. Harbor Blvd. Santa Ana, CA 92704 in writing, by registered mail, within thirty (30) days following the
discovery of the defect within the warranty period. The letter shall contain (1) the date of purchase; (2) place of purchase; (3)
address of installation; (4) name, address and phone number of the homeowner; and (5) a brief description of the defect.
FMI PRODUCTS, LLC, or any entity thereof, is not responsible for any labor costs or indirect costs incurred for the replacement
of defective components.
FMI PRODUCTS, LLC is not responsible for misuse or mishandling of component parts. Nothing in this warranty makes FMI
PRODUCTS, LLC, or any entity thereof, liable in any respect for any injury or damage to the building or structure in which
the fireplace has been installed or to the persons or property therein arising out of the use, misuse, or installation of properly
manufactured FMI PRODUCTS, LLC product.
FMI PRODUCTS, LLC, ORANYENTITYTHEREOF, SHALLNOTBE HELD LIABLE FORANYINCIDENTALOR CONSEQUENTIAL
DAMAGES OR EXPENSES ARISING OUT OF THE USE OF THE FIREPLACE. ALL SUCH DAMAGES AND EXPENSES ARE
HEREBY EXCLUDED.
This warranty is null and void when the fireplaces are not installed pursuant to the installation instructions provided by FMI
PRODUCTS, LLC and local building codes have not been followed completely.
This warranty applies only to those fireplaces installed in the continental United States, Hawaii, Alaska and Canada. If any part of
this warranty is found to be unenforceable,, the remaining parts shall remain in force and effect.
FMI PRODUCTS, LLC HEREBY DISCLAIMS ALL GUARANTEES AND WARRANTIES, EXPRESS OR IMPLIED, BEYOND THE
WARRANTIES SET FORTH HEREIN.
CUSTOMER SERVICE & PARTS REPLACEMENT:
Parts and accessories may be purchased from your local dealer. Additional information is available from FMI PRODUCTS, LLC.
Accessory orders will be accepted by mail, or you may call to order Monday through Friday from 8:00 a.m. to 5:00 p.m. (Central
Standard Time) at: (800) 328-4537.
Please complete the following information for future reference and warranty verification:
2701 S. Harbor Blvd.
Santa Ana, CA 92704
1-866-328-4537
125162-01
Rev. A
12/09
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