FMI MM63, MM49, MM33, MM44, MM39 User Manual
Instructions
ReportNo. 08-154
Masonry Firebox
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 qualied installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Do not store gasoline or other ammable vapors and
liquids in the vicinity of this or any other appliance.
For more information, visit www.fmiproducts.com
ICC Evaluation Services
Report No. 2401
TABLE OF CONTENTS
Safety ......................................................................2
Specications ..........................................................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
SAFETY
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 responsibility for the following actions.
a. Modication 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 combination with a FMI PRODUCTS, LLC replace
system.
Proper installation is the most important step in ensuring 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 specied for use with this
replace.
Fireplace Installation..............................................22
Firebrick Installation...............................................29
Operation and Maintenance ..................................30
Technical Service...................................................32
Replacement Parts ................................................32
Accessories ...........................................................33
Parts ......................................................................36
Warranty .................................................. Back Page
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 ammable vapors or liquids in the vicinity of this
or any other appliance.
• Due to high temperatures, the appliance should
be located out of trafc and away from furniture
and draperies.
• Do not place clothing or other ammable materials 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 caution markings on packaging prior to use.
WARNING: Always leave glass doors fully
opened or fully closed when operating replace.
WARNING: If replace is to be installed on
combustible material, a Metal Base must be used.
See Accessories on page 33.
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125160-01A2
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 specications in this manual.
The Grand Meridian is Designed for Use Only
with:
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.
- Solid Wood Logs
- Plumbed LPG or Natural Gas Log Lighter.
- Plumbed ANSI Z21.60 or Z21.84 Decorative Gas
Log.
125160-01A 3
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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.
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"
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"
SPECIFICATIONS
Figure 1: MM33 Fireplace Overall Dimensions
Figure 2: MM63 Fireplace Overall Dimensions
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125160-01A4
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"
SPECIFICATIONS
Continued
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″
Figure 3: MM39/44/49 Fireplace Overall Dimensions
125160-01A 5
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INTRODUCTION
PRODUCT OVERVIEW
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 necessary 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 specic 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
Full
Projection
Installation
Corner
Installation
Flush
Installation
Figure 4: Typical Installations
Note that each of these topics will be covered in detail and that the installer is expected to understand
each phase completely before going on to subsequent 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 specied minimum clearances to combustibles.
Testing and listing for these Grand Meridian Fireplaces 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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125160-01A6
PRE-INSTALLATION PREPARATION
SELECTING LOCATION
To determine the safest and most efcient 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 affected by drafts, air conditioning ducts, windows or
doors.
3. A location that avoids cutting of joists or roof rafters 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"
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 replace.
3. Set replace directly in front of this opening and
slide unit back until nailing anges touch side framing.
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 embers falling through. If replace is to be installed on
a raised platform, a Z-type ember protector (not supplied) 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 prevent corrosion.
6. Using screws or nails, secure replace to framing
through anges located on sides of replace.
Figure 5: Mantel Clearances to Combustible
Material
125160-01A 7
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PRE-INSTALLATION PREPARATION
Continued
WARNING: Failure to position the parts in accordance with these diagrams or failure to use only
parts specically approved with this appliance may result in property damage or personal injury.
MAINTAIN THE 2" CLEARANCE
TO COMBUSTIBLES ABOVE
THE DOME. DO NOT ATTACH
COMBUSTIBLE MATERIALS
ON TOP OF THE DOME.
18" MIN*
H**
8" MIN*
NON-COMBUSTIBLE
FACING (NOT SUPPLIED).
Figure 6: Framing Dimensions for Combustible Floor Systems
18" MIN*
½"
MIN**
2" MIN. CLEARANCE TO
COMBUSTIBLES AROUND
SIDES, REAR AND TOP OF
FIREPLACE DOME
Condition Dim. H**
with 6" platform 10"
with 8" platform 12"
without platform 3"
* MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS.
** MEASURED FROM FLOOR TO TOP OF FIREBRICK LINER.
**IF METAL FRAMING IS USED MAINTAIN
A ½ INCH MIN. AIR SPACE FROM TOP
OF LINTEL.
*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.
MAINTAIN THE 2" CLEARANCE TO
COMBUSTIBLES ABOVE THE DOME. DO
NOT ATTACH COMBUSTIBLE MATERIALS
ON TOP OF THE DOME.
Model W
MM33 41”
MM39 47”
MM44 52”
MM49 57”
MM63 71”
W
Figure 7: Framing Dimensions for Non-Combustible Floor Systems
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125160-01A8
1’-8”
MIN
2” MIN
2” MIN
8”
MIN
1’-0”
MIN
8”
MIN
1’-0”
MIN
NON-COMBUSTIBLE
FACING MATERIAL
HEARTH EXTENSION *
NON-COMBUSTIBLE
Model A
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
MM33 70 ½"
MM39 82 ½"
MM44 84 ¼"
MM49 86"
MM63 91"
PRE-INSTALLATION PREPARATION
Continued
A
Figure 8: Corner Installation for Combustible Floor Systems
* Not provided as part of replace
or sold by FMI PRODUCTS, LLC.
125160-01A 9
Figure 9: Top View for Combustible Floor Systems
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PRE-INSTALLATION PREPARATION
Continued
MANTEL AND MANTEL SHELF CLEARANCES
As with any radiant heat replace, the Grand Meridian 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 discoloration 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 PRODUCTS, 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 responsible 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 airow or the modications to
the room itself.
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 specied 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, regional 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 platform (see Figure 10). These are included with the
Metal Base accessory.
WARNING: Hearth extension is to be installed
only as shown in Figure 10.
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 coderated, 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 noncombustible.
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).
Fireplace Front
Ember Protector
Fireplace Front
Raised Hearth
Ember Protector
Fireplace Front
Elevated
Seal Gap
Seal Gap
Hearth
Extension
Hearth
Extension
Hearth
Extension
Ember Protector
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Figure 10 - Hearth Extension
125160-01A10
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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125160-01A11
VENTING INSTALLATION
OPTIONAL OUTSIDE AIR KIT (MODEL MM4AK)
The Grand Meridian Fireplace needs enough replacement 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, especially in homes that are very well insulated and
tightly sealed. Check local building codes for specic
requirements.
The installation of an outside air kit should be performed 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 intake. 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 termination cap to keep out small animals.
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
Vented Crawl
Space (Check
Local Codes
Before Installing
in a Vented
Crawl Space)
Figure 13 - Outside Air Kit Venting
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.
Vent Hood
Required
for Wall
Installation
FACTORY BUILT CHIMNEY SYSTEMS
Figure 12 - Outside Air Kit Installation
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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
125160-01A12
VENTING INSTALLATION
Continued
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 modications 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 specied
2” clearance.
Air spaces around rebox must remain open. 8)
DO NOT ll these open spaces with insulation or
packing material of any kind.
LINEAL GAIN
PART NO. DESCRIPTION GAIN
MM33 Fireplace 54 ⅝
MM39
MM44/49
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
STL-12D
* The lineal gain for the terminations is
measured to the ue gas outlet height.
Fireplace 63 ½
Round
Termination
Square Chase-
Top with Slip
Section
7" to 15"*
7 3/4"
"
”
”
*
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.
125160-01A 13
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15" Galvanized
Outer Pipe
12 3/8"
Stainless
Inner Pipe
Hemmed End
Figure 14 - Lineal Gain
VENTING INSTALLATION
Continued
ASSEMBLY AND INSTALLATION OF DOUBLE
WALL CHIMNEY SYSTEM
Each double wall chimney section consists of a galvanized outer pipe, a stainless steel inner ue pipe
and a wire spacer. The pipe sections must be assembled 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 replace 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 important 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).
OFFSET
A B 12" 18" 24" 36" 48"
4 3/8" 16 3/8"
9 3/4" 25 1/2"
12 3/4" 30 3/4"
15" 34 3/4"
18" 40"
21 1/4" 46 1/4"
23 3/4" 49 1/4"
27 3/4" 56 3/4"
30" 60 3/4"
33" 66"
36" 71"
38 1/4" 75"
41 1/4" 80 1/4"
45" 86 3/4"
46 3/4" 89 1/2"
51" 97"
53 1/4" 101"
56 1/4" 106 1/4"
59 1/4" 111 1/2"
61 3/4" 115 1/2"
64 3/4" 120 3/4"
68 1/4" 127"
70" 130"
74 1/4" 137 1/2"
76 3/4" 141 1/2"
79 3/4" 146 3/4"
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
RISE CHIMNEY LENGTH
ELBOW SET ONLY
1
1
1
1 1
1
1 1
1
1 1
1
1 1
2
1 1 1
2
1 1 1
1 1
2
2
1 1 1
1 2
1 2
2 1
1 1 2
1 2 1
1 2 1
4
Screws
B
A
Figure 15 - Elbow Offset
USING ELBOW OFFSETS (30E-12DM)
1.
To achieve desired offset, you may install combinations 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 return must be secured with two screws on the outer
pipe only (see Figure 15). Do not penetrate the inner stainless.
2"
Min.
Straps
Straps
Detail B
Angle Firestop
Straps
Straps
See Detail B
Detail A
Return Elbow
Figure 16 - Ceiling Support Pipe 12S-12DM
See Detail A
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125160-01A14
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