HomeMy WebLinkAbout1108-0318-Set-Up Manual; Fireplace & Chimney SystemIsokern® MAGNUM® Firepla
with Fire-Lite Application
and DM Chimney System
Installation, Operation, Maintenance and Owner's Manual
MAGNUM Models 28, 36, 42, 48, 60 & 72
A PRODUCT OF EARTHCORE INDUSTRIES, LLC. _ -FILE
Important: This manual contains assembly rules, installation steps, guidelines, use and maintenance in-
structions for the MAGNUM Series fireplace, DM 54 chimney system, and Fire-Lite Application with the
FTF-13 Chimney System. This manual must become the property of and be reviewed by all current and
future users of this product. It is the responsibility of the general contractor and the installer of this product
to ensure that the instructions in this manual are followed exactly and, further that any allowed gas log ap-
pliance used in this product be installed in strict accordance with NFPA 58, NFPA 54/ANSI Z223.1 and the
gas log manufacturer's explicit installation, sizing and operation instructions. It is the responsibility of the
general contractor to provide adequate clearances from all firebox surfaces as specified in this manual.
INSTALLER: Leave this manual with the appliance
CONSUMER: Retain this manual for future reference
Be Sure to Read Entire Manual Before Beginning Construction.
Contents of this manual may change without prior notification.
THIS FIREPLACE IS DESIGNED for USE with
SOLID WOOD LOGS, PLUMBED PROPANE
LP) or NATURAL GAS (NG), ONLY
WARNING: If the information in this manual is not followed exactly, a fire or explosion may
result causing property damage, personal injury or loss of life.
SBCCI NO. 9626 NYC-MEA 241-90-E
ICC Report NO. ESR-2316 LA RR NO.25483
IBC 2006, IRC 2006, IMC 2006 Issued:December, 2009
Revision: 003
1ERrFIr
A
nock N0$
e
INTERTEK TESTING SERVICES REPORT NO. 315 9656MID-008
D 2007 Earthcore Industries, L.L.C. ,
TNTC MANTTAT. CAN nNTN RF. RRI)RODUCED IN ITS ENTIRETY
TABLE OF CONTENTS
GeneralInformation....................................................................................................................................... 3
IntendedUse Statement...................................................................................................................................... 4
SafetyInstructions.............................................................................................................................................. 5-6
Warnock -Hersey Listing Label........................................................................................................................... 7
Assembled Firebox & Smoke Dome Dimensions:•.............................................................................................. 8
ComponentList & Dimensions.......................................................................................................................... 9
Assembled Firebox Dimensions 60 & 72..............................................:.............................................................. 10
ComponentList & Dimensions 60 & 72.............................................................................................................. 11
Required Clearance to Combustibles................................................................................................................. 12
Rough Framing Dimensions & Corner Location Layout................................................................................... 13
AssemblyInstructions................................................................................................................................. 14-17
AccessModification........................................................................................................................................... 18
FirebrickInstallation.......................................................................................................................................... 19
FlushWall Finish Detail..................................................................................................................................... 20
AssemblyInstructions - 60..............................................................:.................................................................. 21-25
AssemblyInstructions - 72................................................................................................................................. 26-30
DM54 Chimney System - 60 & 72.................................................................................................................... 31
Required Clearances (When sheathing protrudes beyond front of firebox)....................................................... 32
Required Clearance to Combustible Framing.................................................................................................... 33
Required Clearances to Insulation and Vapor Barriers...................................................................................... 34
Flush Wall Fire Brick Finish Detail..........................................................................................:......................... 35
FlushWall Brick Finish Detail.......:.................................................................................................................... 36
Interior Masonry Veneer Fireplace Finishes & Clearances................................................................... 37
Masonry Veneer Construction Details.................................................................................................. 38
Non Combustible Finished Facing Requirements & Clearance to Combustible Trim ....................................... 39
ConcreteSupport ............................................................................................................................................... 40
DMChimney System........................................................................................................................................ 41-50
GeneralInformation...........................................................................:................................................ 41
Component List & Dimensions.........................................................:.................................................... 42
ComponentWeights............................................................................................................................................ 43
Installation........................................................................................................................................... 44
LateralSupport .................................................................................................................................... 45-46
OffsetBlock........................................................:................................................................................ 47-50
BrickLedge Installation....................................................................................................................... 51
BrickLedge Load Capacity .................................................................................................................. 52
CrownCaps..................................................................:....................................................................... 53
HeightRequirements...............................................................................................:...........I............................... 54
StructuralInformation...................................................................................................6...................... 55
CommonChimney Terminations......................................................................................................... 56
Class"A" Metal Flue......................................................................................................................................... 57
SpecialtyApplications....................................................................................................................................... 58-67
Two Story Stacked Installations....................................................................::.................................... 58-59
Fire-Lite Application General Information.......................................................................................................... 60
Fire-Lite Safety Instructions (See page 6)
Fire-Lite Application - Required Clearance to Combustibles............................................................... 61
Fire-Lite Application - Combustible Floor System............................................................................... 62
Fire-Lite Application - Raised Metal Platform..................................................................................... 63-64
Fire-Lite Application - Flush Wall Finish Detail................................................................................................. 65
FTF-13 or Equivalent Chimney System.............................................................................................................. 66-67
FTF-13 or Equivalent Installation Components................................................................................................... 68
Summary.............................................................................................................................................................. 69-70
Notes.............:................................................................................. ........................ 71
2 -
General, Information
The MAGNUM fireplace and DM 54 chimney system
is a prefabricated, refractory modular fireplace and chimney
system designed for field assembly. The system consists of
interlocking precast parts whichare glued, together with a ma- sonry
adhesive. The
parts of the MAGNUM fireplace and DM 54 chimney
system are precast using a proprietary mixture of volcanic
pumice aggregate and cement. It includes all the parts necessary,
for assembly of a complete firebox, smoke dome and. chimney
system. Each
MAGNUM precast fireplace component is designed:
for a specific part of.the fireplace such that only one means
for assembly is possible. The
firebox and smoke: dome are designed to be fitted. with
a. traditional cast iron, poker -style throat damper..How- ever,
chimney top dampers are an option. The
MAGNUM fireplace'requires a standard refrac- tory
fire brick liner.be applied to the interior of the firebox. Fire brick
must be a minimum thickness of one and one -eighth inch The
MAGNUM fireplace is available in six sizes: twenty-
eight inch,(28"), thirty-six inch (36"), fotly-two inch 42"),
forty-eight inch (48"), sixty inch (60' and seventy-two . inch (
72"). All
units have a thirty-eight inch (387) rough opening height
before fire brick. The only parts which differ among the available
sizes are width related pieces: the base plate, firebox back
wall, front and back smoke dome components,.and the smoke
dome top plate. All units use the same side wall pieces. The
DM 54 chimney system is a dual module refrac- tory
chimney system. The basic chimney consists of an outer casing
block and an inner liner with a fourteen inch (14") di- ameter:
hue hole. The chimney components are field assembled using
Earthcore Mortar to glue the components together. The
DM 54 chimney system also includes an offset chimney
block component, used to create offsets'to the verti- cal
run of the chimney. Abrickledge component is available, designed to
support chimney top brick veneer finishes. Prefabricated masonry
chimney termination caps are also avail- able.: The
various
MAGNUM fireplace and DM 54 chimney components will
be described and illustrated in the follow- ing pages.
Close attention should be paid to each component group's
specifications_ and installation. requirements as de- scribed in
this manual. Important: Due
to. heat and weight issues, the MAGNUM Series fireplace
and DM 54 chimney system installations re- quire" that
the system be built upon a non-combustible concrete' slab with
no wood underpinnings supported to footings with concrete. or
steel and designed to carry the total weight of the Isokern fireplace'
and chimney system. The Fire-
Lite application of the MAGNUM Series fireplace is designed to
be built upon a combustible floor system and will
also require a design that will. support the total weight of the
Isokern fireplace and chimney. system. The FTF-13 or equivalent chimney
system only must be used with the Fire -Lit application. Please
refer to pages 56-81 for installation instruc- tions. Recommended
minimum
overall height for the MAGNUM Series
and DM 54 ,chimney system for an indoor application are
18'-0" when the chimney is straight and 2F-0" when a
chimney is offset. Maximum overall height is 82' - 0", however; installations
over 57' - 0" will require additional 3
r
r Intended Use Statement
Intended. Product Use Statement:.
The MAGNUM fireplace and DM'54 chimney
systems are intended -to burn solid wood fuel, propane or
natural gas...
Note:... .
Installation of a gas pipe must comply with the Standard for
Decorative Gas Appliances"for Installation in Vented Fireplac- ,
es, ANSI Z21.60.
This fireplace is not designed to sit directly on a com-
bustible floor system. The Fire-Lite application listed in the
back section.of this manualis designed to sit on a combustible floor.
See pages 50-68. for specific installation requirements. This
fireplace is intended for use as a supplemental heat
source only and is not intended for heavy use as a primary heating
system. Overfiring,
abusive burning or mistreatment will void any
claims (eg. burning construction debris or other highly flammable.
material; tossing, kicking or otherwise forcing logs. into
the firebox). MAGNUM
fireplace and DM 54 chimney systems are conventional
indoor or outdoor fireplaces designed to appear like
trmditional.masonry fireplaces. MAGNUM fireplace and DM
54 chimney system unitsare. intended for installation in residential homes
and other buildings of conventional construc- tion: Note:.
The
local, authority having, code jurisdiction should be consulted before
installation to determine.the need to obtain a permit. Important
areas
of concern with the installation of these fireplaces
are: construction of proper load bearing foun- dation and
concrete support slab; -code required hearth exten- ion substrates
and supports; proper assembly of. components; clearance to.
combustible materials; height of chimney; and, techniques employed
in applying finishing materials:to the fireplace opening
and hearth extension. Each of
these important topics will be covered in detail throughout
this manual. Installation personnel must give special attention
to each topic as the installation progresses. All work
performed on, near and adjoining the fireplace and
chimney installation must. meet 'or exceed the specifications and
requirements in this manual and the prevail- ing local
building code. Subsequent renovations,
additions of cabinets and storage spaces
in the 'enclosure surrounding the fireplace.are . also limited.
to the specifications.in.this manual and to the pre- vailing local
building code. Isokern is
not responsible for other construction work around the
fire lace unit. WARNING: This
fireplace
has -not been tested for use with glass doors. To
reduce the risk of fire or injury, do not install glass doors.*.. . Some
jurisdictions
require the use of glass doors. If glass
doors are used, operate fireplacemith doors in the fully open
position. Note: Do
not scale drawings. Illustrations in this manual are . not to
scale and are intended to show "typical" installations. Nominal dimensions
are given for design and framing reference
only; since actual installations may vary due to
job specific design preferences. Always maintain the stated minimum
clearances to combustible materials. Do not violate
any specific installation requirements. The MAGNUM
fireplace and DM 54 chimney system is
tested and listed by Warnock Hersey (Intertek Testing Service) -
Report No. 3159656MID-008 and Report. No. 315653MID-
006 - to UL 127, and UL 103HT - 2006. MAGNUM fireplace
systems are also designed for installation in
accordance with the National Fire Protection Association Standard
for chimneys, fireplaces, vents and Solid Fuel -
Burning Appliances. (NFPA-211). MAGNUM fireplaces'are
not listed for use with fireplace inserts. 4
Safety Instructions
1. Before starting the MAGNUM fireplace and DM 54
chimney installation, read these installation instructions
carefully to be sure you understand them completely. Failure to
follow them could cause fireplace malfunction resulting in seric
injury or property damage.
2. Always check local building codes governing fireplaces and
fireplace installations. The MAGNUM fireplace and DM chim-
ney installation must comply with all local, regional, state and
national codes and regulations.
3. MAGNUM fireplace and DM 54 chimney systems are intend-
ed for use in any application where a traditional masonry type
fireplace would apply. The chimney system must always vent
vertically to the outside of the building.
4. Creosote and soot formation and the need for removal: When
wood is burned slowly, it produces tar and other organic vapors
which combine with expelled moisture to form creosote. The
creosote vapors condense in the relatively cool chimney flue of
a slow burning fire. As a result, creosote residue accumulates on
the flue lining. When ignited this creosote makes an extremely
hot fire.
Because of creosote and soot buildup it is necessary to
inspect and clean the fireplace and chimney prior to use and peri-
odically during the heating season. Cleaning of the fireplace and
the chimney system should be done annually at a minimum. In
colder climates, chimney cleaning may need to be done periodi-
cally throughout the heating season.
Before servicing, allow the fireplace to cool. Always shut off
any electricity or gas to the fireplace while working on it.
6. Use only solid fuel or natural or LP gas log sets in this unit. Do
not use artificial wax based logs, chemical chimney cleaners or
flame colorants in this fireplace.
7. Never use gasoline, kerosene, gasoline -type lantern fuel,
charcoal lighter fluid, or similar liquids to start or "freshen up" a
fire in this fireplace. Keep all flammable liquids at a safe distance
from the fireplace.
8. Always keep the flue damper open when heat is present in the "
fireplace.
9. Do not use a fireplace insert or any other product not speci-
fied for use with the MAGNUM fireplace and DM 54 chimney
systems unless written authorization is given by Isokem. Failure
to heed this warning may cause a fire hazard and will void the
Isokem warranty.
10. This fireplace is not intended to heat an entire home or
to be used as a primary heat source. It is designed to ensure
homeowner comfort by providing supplemental heat to the
room.
11. Always ensure that an adequate supply of replacement
combustion air from the outside of the house is accessible to
the fire to support normal combustion. Fireplaces consume
large volumes of air during the normal firing process.
In the event the home. is tightly sealed and has.
modern energy efficient features, the optional combustion
air supply kits may not provide all the air required to sup-
port combustion and the proper flow of combustion gases up
the chimney.
The manufacturer is not responsible for any smok-
ing or related problems that may result from the lack of
adequate air supply flowing into the house. It is the respon-
sibility of the builder/contractor to ensure that adequate air
supply has been provided for the fireplace.
12. "Smoke free" operation is not warranted nor is the
manufacturer responsible for inadequate system draft caused
by mechanical systems, general construction conditions,
inadequate chimney heights, adverse wind conditions or
any unusual environmental conditions or factors beyond the
manufacturer's control.
Caution: When used with ,the MAGNUM fireplace system,
all gas log sets must be operated with the damper clamped
in the fully open position. This includes unlisted "vent free"
log sets. Only listed "vent free" log sets may be operated
with the damper in the closed position.
13. When in doubt about a component's usability - has vis-
ible or suspected physical damage - consult your Isokern
distributor or authorized Isokem representative for advice.
Safety Instructions - (cont.)
1.4. Modification to, MAGNUM. components notmentioned in
this manual may void claims, listings and approvals and could
result in. anunsafe:and potentially dangerous installation. Alterations.
to the MAGNUM firebox are allowed with prior
written approval and instructions from Earthcore Indus- tries,
LLC. The installer%indemnifies the manufacturer of.all claims
and under no circumstances"will manufacturer be liable for
consequential, incidental; indirect; punitive or other dam- ages
of any kind'or nature, whether foreseeable or not, based on
any .claim by any party as to .the modifications of the Isokern fireplaces.
15.
Wherever insulation is used,.the MAGNUM fireplace must not
be placed directly against it. Keep all insulation or vapor barriers
a minimum of three inches (P) away from all fireplace and
chimney components. It
is recommended that insulation and vapor barriers;if used, . first
be covered with gypsum board, plywood, particle board brother
materiat.to assure that. insulation. and vapor barriers remain
in place. WARNING
Do not.pack required air spaces with insulation or of
er.matenals.. . 16..
Never leave children unattended when there is a fire burn- ing .
in the fireplace. 17.
Burning some fuels (such as charcoal) canbe hazardous due to
the possibility of producing carbon monoxide; a color- less, odorless -
gas. Early signs of carbon monoxide poisoning resemble flu
symptoms, including headaches,, dizziness or . nausea. Over
exposure to carbon monoxide can lead to illness and death.
It is strongly _recommended to install smoke and carbon monoxide
alarm / detector devices•wherever fireplaces . are iri
use. . a 6
Warnock Hersey Listing Label
Facsimile -
MODULAR REFRACTORY FIREPLACE - 0lSt K-2iJ®
MAGNUM: 028" 036". 042" 048" 060" 72" —
C K a US MADE IN USA
eeea N
WAN 04897 COMPLIES WITH APPLICABLE REQ. OF UL 127, ULC S610 MADE IN DENMARK
DO
OR'COVERMOVE WH-
THIS LABEL
EARTHCORE INDUSTRIES, LLC.
JACKSONVILLE, FL 32256
CLEARANCE TO COMBUSTIBLES: 2811, 361% 42", 48" 60" ri 72"
UNIT FRONT AND ISOKERN CHIMNEY = 0 in. = 0 in.
UNIT SIDES AND REAR = 1.5 in. (38mm) = 1.5 in. (38 mm)
COMBUSTIBLE SHEATHING ABOVE OPENING TOP = 8 in. (203mm) = 24 in. (610 mm)
SHEATHING OR TRIM TO OPENING SIDES = 8 in.. (203mm) = 9 in. (229 mm)
MANTLEABOVE OPENING =14 in. (356mm) = 38 in: (985 mm)
OPENING TO.SIDEWALL = 26 in. (660mm) = 48 in. (1219 mm)
HEARTH, EXTENTION BEYOND FRONT = 20 in. (508mm) = 33 in. (838 mm)
HEARTH EXTENTION BEYOND SIDES = 12 in. (305mm) = 12 in. (305 mm)
COMBUSTIBLE FLOOR = 4 in. (102mm) = N/A N/A
INSULATION.FROM FIREBOX = 3 in. (76mm) = 3 in. (76 mm)
USE SOLID WOOD FUEL OR LISTED DECORATIVE GAS VENTED OR UNVENTED APPLIANCE. ALSO FOR USE WITH LISTED METAL CHIMNEY.
FIRE•UTE APPLICATION TO USE FTF13 OR EQUIVALENT CHIMNEY ONLY.
DO NOT USE A FIREPLACE INSERT OR OTHER PRODUCTS NOT SPECIFIED FOR USE WITH THIS PRODUCT. "WARNING" THIS FIREPLACE HAS NOT BEEN TESTED FOR USE
WITH GLASS DOORS. TO REDUCE THE RISK OF FIRE OR INJURY, DO NOT INSTALL GLASS DOORS. IF DOORS ARE USED, OPERATE FIREPLACE WITH DOORS FULLY OPEN.
WHEN BURNING A.DE.CORATIVE GAS APPLIANCE IN THE FIREPLACE, LOCK THE DAMPERTO THE FULLY OPEN POSITION. ONLY UNVENTED GAS LOG SETS WHICH HAVE
BEEN FOUND TO COMPLY WITH THE STANDARD FOR UNVENTED ROOM HEATERS, ANSUTASIAGA22 AL2, ARE TO BE INSTALLED IN THIS FIREPLACE, DO NOT OPERATE
AN UNVENTED GAS LOG SET IN THIS FIREPLACE WITH THE CHIMNEY REMOVED.
SEE INSTALLATION AND OPERATING INSTRUCTIONS FOR THIS MODEL AND ICC # ESR-2316,
LA.RR # 25483, MEA #2490E.
ONLY UNVENTED GAS LOG SETS WHICH HAVE, BEEN FOUND TO COMPLY WITH THE STANDARD FOR UNVENTED ROOM
HEATERS, ANSIMSIAGAi21.11.2, ARE TO BE INSTALLED IN THIS FIREPLACE
CONTACT BUILDING OFFICIAL PRIOR TO INSTALLATION
FIGURE 1
Isokern Fireplace and Chimney. Systems are tested and listed to UL standards:, UL 127, ULC S610, and UL 103HT.
The listing label shown in Figure 1 above outlines the listed clearances to combustibles and indicates that the units are
suitable for use with solid fuel or fisted gas appliances. Refer to the manufacturer's. installation manual for detailed description of
clearances to combustibles and all other installation information.. .
A metal listing label similar to that shown above is affixed to each MAGNUM Series fireplace.
Do not remove the listing label from the MAGNUM Series fireplace.
Priorto beginning installation, contact your local building official to determine the need to obtain a permit. 7
Assembled Firebox & Smoke Dome Dimensions 28, 36, 42 & 48
G
2 3/4" N
14"
TOP PLAN VIEW
U
F
0
E
m
ii 5"
r- A _
SIDE VIEW FRONT VIEWPLAN SECTION A -A MODEL
W. B" C" D" E" F' G' MINIMUM FRAMING: WEIGHT 28"•
351/2" 28" 601/4" 311/2" 31 193/4" 22.1/4" 39"V1/x61.1/2'Hx291/7D 1040lbs 36"
43" 28" 693/4" 41" 383/8" 27114" 33' : 46"W x 71"H x 2 6 1/2"D 1300lbs 42"
49" 28' 693/4" 41' 441/2" 331/4'" 33' 52"W x 71"H x 29 1/2"D 1420lbs 48"
53" 28' 69314" 41' 481/2" 371/4" 43" 56V x 71"H x 29 1/2"D 1600lbs 28'
Model comes with three (3) sidewalls Firebox &
Smoke Dome Components List PART ..
FIREPLACE QUANTITY: PART FIREPLACE QUANTITY: NO.:
SIZE: NO.: SIZE: M77
361W 1 M81 48"W 1 M77
42"W 5I
TOP
PLATE, SMALL 14
314" 8
q3.
4 314" TOP
PLATE, LARGE
i Component List & Dimensions 28, 36, 42 & 48
BASE PLATE
PART MODEL SIZE QTY:
Nn•' a
M91 28 1/2' 1 Lug9'
1
M91 36 1
M92 42
M93 48
SMOKE DOME SMALL and MEDIUM
PART MODEL SIZE QTY:
NO.: A
12 1 28 1 321/2' . 2
11 36 43' 2
11 42 43° 2
C
4
SMOKE DOME LARGE
Y
PART MODEL SIZE QTY: 4
NO.: A
13 1 48 1 53° 1 2
q
TOP SLOPING. 13jq°
PART MODEL QTY: (
N0:
34 28' 1 2
34 36 2
34 2 .. 2
34 48 2 '
True height when installed
TOP SLOPING
PART MODEL . CITY:
10
OM90288
M90 36 8
M90 8
M90 48 8 C
12j9°
BACKWALLS
PART MODEL SIZE QTY:
NO.: r
M65 28 Cut1o20°" 3
M65 36 43' 4
M66 42 49" 4
M67 48 53' 4
Cut as shown at right, mortar pieces together
and staggerjoints when stacking for installation
C
o,
DAMPER SUPPORT -LEFT
PART MODEL QTY:
NO.:
M94L 28 2
M94L 36 2
M94L 42 2
M94L 48 2
DAMPER SUPPORT BEAMS (FRONTandREAR)
PART MODEL SIZE CITY:
NO:: H
M68 28 Cut to 351/2" 1 2
M68 36 43" 2
M69 42 49" 2
M70 48 53° 2
FRONTOF
SMOKEDOME
MODEL28ONLY
DAMPER SUPPORT -RIGHT
PART MODEL QTY:
NO.:
M94R 28 2
M94R 36 2
M94R 42 2
M94R 48 2
H
REAR
oo
9.
Assembled Firebox Dimensions - Models 60 & 72 1
Right Section Front Elevation
Ef
Top Plan View
K
TI
B
E
Plan Section
Model A B c D E F G H I J K M N O
60" 73 1/2" 28" 85 3/4" 41 " 69" 57 1 /4" 551 /2" 25 '/a" 4 3/4" 5" 8" 14 1 /4" 11 " 55 1/2"
72" 85 1/2 " 28" 85 3/4 " 41 " 81 1 /4" 69 3/4" 65 1/2" 25 'Ya" 4 3/4" 5" 8" 14 1 /4" 11 " 65 1/2"
Minimum Framing Weight
76 1/2" W x 87 1/2" H x 29Y2' 2500 lbs.
881/2" W x 871/2" H x 29Y2" 2900 lbs.
Part Fireplace Quantity:
No.: Size:
M77 60"W 2
M77 72"W 2
ypti
1
TOP PLATE
10
Component List & Dimensions 60 & 72
Base data
Pon FIr 0 auentily:
M91 00 2
6A91 72. 2 -
Tap W%dium
Pork Firopino Quanlity,
No: B'ize:
11 2
11
Pad Replace Wank:
Mac SiZe:
13 :.9
13 77. ' 6.
Part Firepbcs . Oui3#dv, :
34. 60 4
4
Bart FirepLaxe Ouenfity:
k! ..-
iNtG-I C-D B
N
1xp4r Support (Lall)
Part Replace diankfr-
No: Size:
14L 60
DA94! 7 1
Pak Firepftce Ouaafflty:
Now 1,15ARO:
M64R M 1
M04R 7,2 1
9-Z\
Damper F mnt & Bach
t Fin Quavy.
Pam:
rA a 9 Go 4
Meg 4
Isokern reserves the right to make changes at any time, without notice in design, materials, specifications and also to
discontinue styles and products. Please call 1-800-642-2920 for an Isokern dealer near you.
11
y
f Required Clearance to Combustibles
The MAGNUM Series fireplace and DM 54 chimney
system is tested and listed for installation, with."clearance to. com-
bustibles" as follows:
The MAGNUM Series firebox side walls and back wall
require 1-1/2" clearance. (Figure 3.)
The smoke dome front wall requires 0" clearance.
All DM 44 and 54 chimney components require 0"
clearance. (Figure.2). s-
Note: "Combustibles" are defined as "normal construction materi-
als" and are considered to be: wood framing materials, particle
board, mill board, plywood sub -flooring, plywood paneling and
wood flooring.
Sheathing materials, such as plywood, particle board and
drywall may cover the smoke dome.front at 0" clearance,
All combustible sheathing materials that protrude beyond front of
firebox must be held 8" away from the sides of the firebox opening
and 8" above the top of the firebox opening. Drywall must be cut
2".back .from.the firebox opening sides. and 8" above the top of the
opening.
RNING: Maintain a minimum of 3" clearance to insulation
vapor Faffiriers. (Figure 75)
Notes:
A. The MAGNUM Series fireplace is rated for
installation on a combustible floor system when using the Fire-Lite
application only. See pages 60-69 for Fire-Lite installation instruc-
tions.
The Magnum Series fireplace must sit upon a concrete
support slab designed to bear the total installed weight of the
fireplace and DM.54 chimney system. (See Figure 2 for additional
details). These support slabs can have no wood underpinnings.
Figure 3)
B.. Concrete support slabs for MAGNUM Series fire- .
places must provide the noncombustible hearth extension substrate
needed to support the code required noncombustible hearth exten-
sion finish materials. (Figures 2 and 3)
C. All MAGNUM Series fireplaces shall have hearth
extensions of approved noncombustible material such as brick,
tile, or stone.that is properly supported and with no combustible
material against.the.underside.thereof. Wooden forms used during
the construction of hearths and hearth extensions shall be removed
when the construction is complete.
D: If a raised fireplace floor and raised hearth extension
are preferred, the raised underlying structure me built of non-
combustible material and must sit on noncombustible substrate. FIGURE 3.
12
FIGURE 4
o
Rough 'Framing .Dimensions
Rough Framing Dimensions
Model Width Height Depth
A B C
Model28 381/2" 71" 29.5"
Model M. . 46" 71" 29.5" .:
Model42 52" 71" 29.5".
Model48 56" 71" 29.5"
Model60 78" 87" 29.5"
Model12. 89" 87" 29.5"
Notes:
A: `B" includes the MAGNUM 3" thick base plate. `B" is reduced by
3" if the base plate is eliminated to create a "flush hearth".
B. "Raised hearth" requires additional rough opening height at `B"
equal to. the height of the raised hearth detail:
C. Rough framing dimension for width "A" allows for the required
1-1/2" clearance at the sides of the MAGNUM fireplace.
D. Rough framing- dimension for depth "C". allows for the required
1-1/2" clearance_ at the back of the MAGNUM fireplace.
Corner. Location Layout
The following chart. of dimensions is intended to aid in the positioning of
an MAGNUM fireplace in a corner condition
where the DM 54 chimney must turn 45° degrees to align with overhead
framing.
Firebox A B C D
Model28 331/2" 181/4" 24" 651/2"
Model 36 43" 16 3/4" 32" 78 3/4"
Model42 49" 261/2" 36" 8.3"
Model48 539' 28 1/2" 39". $5 3/4"
Model60 731/2" '39" 531/2" 1021/2"
Model72 851/2" 45" 62" 111"
To turn flue 45°; first set one offset block on the firebox so that
the chimney offsets 3" toward the back of the firebox. (Figure 5)
Set a DM 54 outer casing onto this offset block so that the outer
casing is at 45 to the firebox and square to the overhead framing system.
Run the vertical DM 54 chimney through the overhead framing.
More offset blocks can be used - if necessary to align with over-
head framing - before running the vertical DM 54 chimney outer casing
and liner.
Note: Support the third offset down to footings and at each third offset
block thereafter (see page 47).
n-
FIGUR
IGURE 7
IGURE 8
Assembly Instructions - 28, 36, 42 & 48
ECI
MORTAR
SHIM IF REQUIRED
TO ACHIEVE
CORRECT HEIGHT
Isokern Assembly Instructions:
Earthcore Mortar (a thin -set type masonry adhesive) is
used to glue all Isokern components together during field assembly
of the unit. The mortar is supplied dry, in either 15 pound or 50
pound pails.
I Earthcore mortar is mixed with clean water to a smooth,
workable texture (without lumps or dry pockets) of a "toothpaste"
consistency. This mixture is suitable for application onto Isokern
components by using a masonry grout bag supplied with the unit.
Attention should be paid that the mortar mixture is not too
thin or runny, as this will not allow the mortar to reach its maximum
bonding strength.
Earthcore mortar is squeezed from a grout bag onto the
contact surfaces of the Isokern components as they are fitted to-
gether.
It is important that a 1/2" bead of mortar on -all the compo-
nents' contact surfaces is applied at about 1/2" in from all edges of
the contact surface of the component. (Figure 7)
When setting the next component onto the mortared con-
tact surface of the first component, some mortar should squeeze out
along the face of the entire joint as a sign of complete and proper
sealing of the joint.
On broader contact surfaces it is advisable to apply several
additional 1/2" beads of the Earthcore Mortar to the area to assure
proper sealing of the joint.
Properly mortared firebox and smoke dome assembly
requires approximately 5 ,gallons (dry measure) of Earthcore mortar.
Broken Components:
Components broken into 2 or 3 pieces can be repaired by
using Earthcore mortar along the break line as the component is set
into place. Components broken into multiple small pieces should be
discarded and replaced.
Leveling and Aligning Components:
Be sure to assemble all Isokern components level and flush
with adjoining components.
Earthcore mortar is not intended to create a mortar joint
of any thickness for leveling purposes. Therefore, leveling and
alignment adjustments are made by the use of small plastic shims
supplied with the unit. (Figure 8)
The shims can be inserted under a component to level and
align it with adjacent Isokern components. Be sure to re -grout any
and all gaps resulting from shim insertion to maintain components
to full bearing.
14
Assembly Instructions - (cunt.)
3.,Earthcore.mortar can be troweled over the face of a joint
where it has squeezed: out while setting components. It is not
intended that the exposed faces of the Isokern components be
completelycoveredvith the mortar. Installation:
Step'
1:. Set.the MAGNUM base plate in a full bed of Earthcore Mortar
flat on a proper concrete support *foundation. (Figure 9). Do
not set the MAGNUM base plate so that it is, in span. Level the
MAGNUM base plate. by floating it in a bed of Earthcore Mortar
to full bearing against the underlying noncombustible. support
surface. Notes:
If the design preference. is 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 brickfloor 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&') above thetopof the concrete support slab (Figure 10).. If the
design preference is for a.raised hearth (floor of the fireplace
elevated above the room's floor); then the MAG- NUM base
plate ban be set on a noncombustible platform that is built
up to the desired raised hearth height on.the concrete supportt slab.
When calculating
raised hearth height be sure to allow for the
three inch (3") thick base plate plus the one and one half inch (1-
1/2") thick firebrick floor in: addition to the height of the platform. Whether
a flush hearth• is preferred or a raised hearth, the combustible
floor on front'of the fireplace must be covered with a
noncombustible hearth extension set tight against the fire- place. front
and extending at least 20 inches out from the finished fireplace and
at least 12 inches, beyond the finished sides, of the fireplace opening. (
Figure.11) For all "
raised hearth" construction where concrete blocks, are
used to create the raised platform; it is necessary to use the.
MAGNUM base plate. Be sure to mortar the concrete block platform
together. CMU used for base plate support should be
rated ASTM 90. " Step 2:
Set the first course of the firebox back wall and side walls into
place. It may
be convenient to. dry set the first course of side. wall and
back wall into place on the.Isokern base plate and then to trace
their position on the base plate with a pencil. (Figure 12) After outlining
the dry set pieces, remove them and ap- ply Earthcore
Mortar to the areas traced on the base plate where the side
walls and back, wall are to sit.. By doing this, the first layer. of
Wall components can be set directly into mortar already applied to
the proper areas on the base plate. (Figure 12) : Be sure
to put Earthcore Mortar on the contact surfaces of the
vertical joints where the side wall and back wall compo-. nents connect. (
Figure 13) Note: At
all.componeut placement; be sure.to mortar all compo- nent contact
surfaces with Earthcore Mortar. Check for complete sealing of
each. contact joint while assembly progresses.. FIGURE 9
FIGURE 10
FIGURE 11
FIGURE 12
15
Assembly Instructions - (cont.)
RC
a
FIGURE is
Step 3:'Continue assembly of the second, third and fourth
courses of the firebox side wall and back wall. Apply mortar to
the top of each layer of wall components, set the next course
above into place. Be sure to mortar all vertical joints of the side
wall to. back wall connection when setting each component to
its mate. (Figure 13)
Look for some mortar to squeeze out along the joints
of all contact surfaces as a sign that the joint is thoroughly
sealed with the approved mortar.
Step 4: When all of the MAGNUM firebox wall components are
set, check the top surface of the firebox for level.
If necessary; adjust the top surface of the box assembly for level
by inserting a shim between the lowest wall component and the
top surface of the MAGNUM base plate. (Figure 8)
Any gap created under the wall components during the
Shim leveling process must be filled with mortar to full bearing
against the base plate.
Step 5: Make sure that the firebox assembly has been set level
and square. Adjust as required while the mortar is still wet.
Make a final inspection of all contact joints in the fire-
box assembly to be sure they are properly sealed. Fill any, and
all gaps in the assembly, as necessary, with the approved mortar.
Step 6: The MAGNUM comes with an eight inch (8") thick
damper beam assembly, a four piece component group that is to
be assembled on top.of the firebox.
The damper beam assembly consists of two long lintel
pieces and two short damper beam side pieces.
The two lintels are identical in shape, size and in
length, equal to the width of the MAGNUM fireplace model
that they serve.
Properly placed, one lintel is to sit on top of the firebox
back wall and flush with it; the other, lintel sits flush with the
front of the firebox, spanning the firebox opening. These com-
ponents both sit on their narrow base so that their beveled face
points down and into the firebox interior. (Figure 15)
The damper side pieces are designed to sit on the
firebox side wall between the front lintel and the back lintel.
Figure 14)
Each of the damper side pieces is designed specifically
for its own side of the unit. When properly set, each damper
side piece fits flush with the outside face of the firebox sidewall
so that its interior bottom edge aligns with the interior angle of
the firebox side wall that it sits on. (Figure 14)
Be sure to mortar all damper beam components to the
top surfaces of the firebox.
Mortar the contact surfaces of each damper side com-
ponent where. it meets the front and back damper beam assem-
bly lintel components.
16
I Assembly Instructions - (cont.)
Step 7: With the damper beams assembled and mortared
together, set the cast iron throat damper on top of the
damper plate and over the damper plate opening. The
cast iron damper's operating plate should face toward
the rear of the fireplace. (Figure 16)
The flange at all four sides of the cast iron
damper should be supported by the damper beam's top
surface.
Before adjusting the cast iron damper to its final
position proceed to Step 8.
Step 8: Set the back smoke dome component across the
damper beam in a bed of mortar and flush with the back
face of the back damper plate lintel. (Figure 17)
Set the front smoke dome component in mortar
across the damper plate and 2 -1/4 inches back from the
front of the front damper plate lintel. This placement
should create a space of 17 inches between the front and
back smoke dome components.
Position the cast iron damper so that its front
flange is approximately one inch (1") away from the
inside face of the front smoke dome component.
Figure 16)
Run a thin bead of mortar around the four sides
of the cast iron damper flange to avoid movement of the
damper as it gets opened and closed.
Step 9: Position the smoke dome's sloping sidewalls at
each end of the smoke dome components. (Figure 17)
The sloping sidewalls fit in between the front
and rear smoke dome components and also fit into the
haunches at the ends of the front and rear smoke dome
components. Mortar all contact surfaces thoroughly.
Note: The smoke dome sloping sidewalls have a bev-
eled bottom edge so that they will sit tight onto the flat
top of the damper beam.
Step 10: Make sure that all component contact surfaces
have been properly sealed with approved mortar.
Check smoke dome front and back walls to see
that they are plumb, level and in alignment with mating
components.
Check alignment of the smoke dome sloping
sidewall components to see that they are fully seated.
Step 11: Set the smoke dome top plate into position on
top of the smoke dome wall assembly. (Figure 18)
One side of the smoke dome top plate shows a
thickened center. This side is the bottom face of the top
plate.
The fourteen inch (14") diameter flue hole in
the top plate is centered in the smoke dome from side to
side but is offset from front to back.
Make sure that the top plate is set so that the flue hole is closer to the
back wall of the smoke dome assembly.
Be sure to set the smoke dome top plate flush with
the front, back and sides of the smoke dome assembly. All contact
surfaces must be properly sealed with the approved mortar.
Note: The completed smoke dome assembly should present a stable
and level surface for setting the flue components. (Figure 18)
FIGURE 16
FIGURE 17
FIGURE 18
FRONT REAR
Assembly Instructions - Access Modification
FLEX DUCT TO FIREPLACE
FIREBOX, (ALL PARTS
NON-COMBUSTIBLE).
EXTERIOR
WALL
EXTERIOR AIR VENT
WITH DRESS PLATE.
FIGURE 19
TYPICAL PLA(
GAS OR ELEC
SEE DETAIL
SUPPLY AIR vrn j iu i iuiv
IF REQUIRED BY CODE).
FIGURE 20
FIRE BRICK SIDE
GAS OR ELECTRIC
CONDUIT
NOTE: FILL ANY GAPS
FIGURE 21 AROONDCONDUITWITH
MORTAR.
Through -Wall Accesses:
1. Combustion Air Inlet: Combustion air inlet kits though not required
by Isokern may help improve fireplace operation in homes tightly sealed
and with other ventilating appliances installed (Figures 19 & 20). Check
local codes for combustion air inlet requirements.
The following is a general representation of a generic com-
bustion air kit and not a requirement of Earthcore Industries, LLC.
Local building codes prevail and should be checked before installa-
tion.
Generic fireplace combustion air kits typically consist of a
sliding stainless steel access door affixed to a three inch (3") or four inch
4") diameter stainless steel sleeve approximately twelve inches (12")
long. An exterior vent with dress plate, weather hood and rodent preven-
tion screen. of a maximum one -quarter inch (1/4") wire mesh completes
the kit. (Figure 19)
The access door is fitted into the finished fire brick lining at
the interior sidewall of the MAGNUM firebox. The twelve inch (12")
long sleeve can be introduced into the firebox side wall or back wall by
core drilling an appropriately sized hole at the selected firebox location.
Keep the top of the four inch (4") diameter access hole no more than six
inches (6") above the finished firebrick floor. The hole size should allow
for a,one-quarter inch (1/4") mortar joint around the air access sleeve for
heat expansion.
The sleeve passes through the firebox wall and must
be connected to metal pipe (by other) - either flexible or rigid - that leads
to the source for outside combustion air, as directly as possible from the
Magnum Fireplace (Few to no bends) with a maximum length of sixty
feet (60').
WARNING: Do not use combustible duct material. Avoid installing
a combustion air inlet where the opening could be blocked by snow,
bushes or other obstacles. Air inlet must terminate a minimum of three
feet below the chimney cap level. Air inlet ducts shall not terminate in
attic spaces.
2. Gas Line Feed: For a fireplace having the provision for installation of
a gas pipe, the provision is intended only for connection to a decorative
gas appliance.
CAUTION: When using the decorative appliance, the fireplace damper
must be set in the fully open position.
Gas line for gas log sets used in the Isokem firebox can be routed
through the side wall, back wall or floor of the firebox by drilling an ap-
propriately sized hole using a masonry drill bit (Figure 20).
3. Electrical Line Feed can be routed through the MAGNUM firebox
back wall, side walls or floor by drilling an appropriately sized hole
using a masonry drill bit (Figure 20). Be sure to follow the gas log Ap-
pliance Manufacturer's explicit electrical line connection instructions for
vented masonry fireplace installations.
Gas line and electric line must be fed through separate access holes.
CAUTION: All access holes must be grouted with mortar — after line or
conduit feed - to seal any gaps or cracks around line feed conduits
Figure 21).
18
Assembly Instructions - Fire Brick Installation
Fire Brick Installation:
The manufacturer requires that the MAGNUM
Series fireplace firebox be lined with a minimum one and one -
eighth (1-1/8") thick rated fire brick. The pattern for the fire
brick lining is an owner option. Standard N-Type brick mortar
is a suitable fire brick mortar for the Standard fireplace and
good masonry practices should be followed.
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.
It takes a total of about five gallons of S-Type brick
mortar mix (dry measure) to fire brick line a MAGNUM
fireplace.
Face joints of one quarter inch (1/4") to three -eights
inch (3/8") give a good appearance to the finished brickwork
however, this is just a suggestion and other face joint dimen-
sions are also acceptable.
Step 1. Wet mop the inside of the MAGNUM fireplace with
a damp sponge to remove dust and loose particles from the
interior before installing fire brick.
Step 2. Start the fire brick at the front edge of the floor of the
Isokern firebox, proceeding inward toward the back.
HINT: Dip each firebrick into water before applying.
Step 3. Next, apply fire brick to the back wall of the unit start-
ing at the bottom of the back wall and working upward to the
top of the back wall.
Step 4. Finally, set the side wall fire brick by starting at the
front edge of the unit's side wall and working inward toward
the back wall fire brick.
Isokern makes no claims as to the performance
of fire brick or fire brick mortar(s). It is typical for heat
stress cracks to appear in the fire bricks in wood burning
fireplaces.
FIGURE 22
FIGURE 23
FIRE BRICK
FLOOR AND
BACK WALL
BUILT FIRST)
FIGURE 24
Flush Wall Finish Detail
FIGURE: 26
MAGNUM fireplaces are.designed to be installed so that the.rough front face of the firebox and damper beam project into the room
approximately one-half inch.(1/2") beyond the -face of the rough framing members, that create the room's wall surface.
The MAGNUM'smoke dome -front sits two and three -fourths inches (2-3/4") back from the rough face of the firebox and damper
beam. This set back dimension allows for one and one-half inch (1-1/2") framing'plus one-half inch (1/27.) thick wall board to pass,
in. front of the smoke dome and at the same time align flush with the room face of the MAGNUM damper beam. Set in this position,
framing and wallboard arekept.to the required eight inches (8").above the firebox opening top (Figure 25).
Important: Do not build a frame wall in, front of the MAGNUM firebox and damper beam. (Figure 26)
20
4 Assembly Instructions.- 607
The MAGNUM Model 60 is a custom unit made of
standard' parts that are. cut and fitted together in the field., The
following cut and assembly- instructions identify the parts by
name and by, part number, the quantity required, the field cut
dimensions for each modified component and the placement of
each part in: the, assembly.
Note:At all component placement,, be sure to mortar all,
contact surfaces with Earthcore,Mortar. Check for complete
sealing of each contact joint while assembly progresses (see
General ls6kern, Assembly.lnstru ctions" on page 14:of this
manual for mortarortar information and instructions).
Step I.: Base plate, part M91, two required; All require field
cutting.,
Set the un-cut M91 base.plate components on an ap-
propriate:masonry foundation. Cut one base plate'to 30 1/2".:
Figure,22) Set the two.'pieces so that,the line of the grouping
is a butt joint. (Figure'23)i Set the cut M91, pieces into place.*
This makes.for square ends. The overall length of the base
plate assembly should measure 73-1/2" and 28" deep.
Step'2:'Side wall-, part M90, eight pieces required, used "as
Iis "' The -fire box side wall components are used without modi-
fication. Thesidewall pieces stack four high on both the left and
right hand ends of the base plate arrangement (Figure 24) The
stack of four fire box side wall components will be
assembled in conjunction with the firebox back wall com- ponents
described in the following steps. Step
3: Back wall, part M67, eight pieces required, to be "field modified".
Cut the tongue off one end of each of the four M67 backwallcomponents-
as shown. After cutting
four of these cut pieces should measure 3 8
1/2" from the cut end to the shoulder of the un-altered end Figure 25).
The other
four cut• pieces should measure 22 1/4' from the
cut end to the shoulder of the unaltered end. Figure 26)
Step 4:
Build th6:MAGNUM Model 60 firebox by setting a 38.1/
2'7 M67.back wall. (from step 3) on the.base plate with it's tongue end
interlocked into the firebox side wall at the end of the basoplate.
The square
cut end of this a 38-1/2" M67 back wall component sits
flush with the back of the base plate with its'cut
end past the cemerlifie in the base plate arrangement Fig ure
Next set.
the 22-1/4" cut M67 piece so that its tongue end nd
interlockswith the side -wall component at the opposite end o.
fthe baseplate. The square cut end of the-22-1/4" M67 should make
a snug butt joint -With the square cut, end of the 384/2"
M67 component (Figure 28). FIGURE 23
FIGURE 24
I FIGURE
25 MMOVE, Was
miceFIGURE26
FIGURE 27
r, 21
FIGURE 28
FIGURE 29
FIGURE 30
IGURE 31
FIGURE 32
Assembly Instructions - 60" (cont.)
f REMOVE THISPIECE
1
Step 5: Continue stacking the remaining three courses of
back wall. Be sure to reverse the positions of the 38-1/2"
M67 and the 22-1/4" M67 in each successive course.In this
way, the butt joint where the two M67 components meet are
staggered from course to course.
The overall width dimension at the back of the
firebox should -be 13-1/2" including the sidewalls.
Figure 29). .
Step 6: Steel angle 4" x 6" x 5/16", one required,
73-1/2" long which must span the top of the MAGNUM
Model 60 firebox opening.
This steel angle sits on top of the uppermost side
wall component with the four inch leg in the horizontal po-
sition. To avoid a thickness problem with the placement of
the steel angle it is necessary to cut'a notch in the top Side
wall component where the angle is to sit. This notch should
be'cut approximately 5/16" deep. The notch should start at
the front face of the side wall component (at both the left
and right hand walls) and run to a point 4" back toward the
firebox (Figure 30).
The steel angle sits in this notch. The six inch leg
of the steel angle is in the vertical position and is to be lo-
cated in alignment with the front of the firebox. The ends of
the steel angle should not protrude beyond the outer firebox
side walls (Figure 30).
Mortar between the steel and the notch in the top of the side
wall is not needed.
Step 7: Damper support (front & rear), Part M69, four
required, to be field cut to fit.
Bevel cut one end of each of two M69 damper sup-
ports to 35-1/2" in length from the long point of the bevel
cut to the un-cut square end. (Figure 31). The long point of
the bevel cut is to be at the top of the damper Support
For best results a 15' bevel angle is suggested.
Step 8: Bevel cut one end each of two M69 damper sup-
ports to 38" with the long point of the bevel at the bottom
of the damper support. The bevel angle must be at the same
angle — in this. case, 15 degrees - to match with the bevel
angle of the other damper supports already cut in Step 7
Figure 32).
Step 9: Set the cut damper supports along the front and
along the rear of the firebox using one of each of the cut
pieces (one with the long point at the top of the piece and
one with the long point at the bottom of the piece) together
as pairs.
The damper support pair at the front of the firebox
opening will be mortared together and set into the steel
angle from Step 6 (Figure 33).
22
Assembly Instructions - 60" (cont.)
Since the inside.comer of the steel angle is
rounded, it is a good idea to round the bottom front
corner of the damper support to match the steel.
With the bevel cut ends of the damper support
pairs.meeting at the middle of the firebox, :the bevel joint
should. be an even and good fit. -The damper supports
overall installed length should be 73-1/2". (Figure,33)
Note: Do not join the damper supports with a butt joint.
The bevel joint discussed above is the REQUIRED type
of joint for the damper support.
The bevel angle of 15° degrees is a convenient
angle and is given as a.suggested angle. The angle of the
bevel cut could be greater, just so.the, bevel cut in each
damper support joining pair is the same angle in order to
have a good fit at the, joint. .
Please consult your local sales representative for.
the appropriate damper systems for models 60 and 72.
Step 10: Damper support (left), part M94L and damper
support (right), part M94R, one each required. To be
used "as is".Set the damper support (left) and the damper
support (right) into place on top of the firebox side walls .
in between the front and rear damper supports.
Each of the damper supports, right and left, is
designed specifically for its own side of the unit. When
properly set, each damper plate side piece sits flush with
the outside face of the firebox side wall. The interior bot-
tom' edge of the damper support end pieces aligns. with
the angle of the interior of the firebox side wall
Figure 33).
For the MAGNUM Model 60 the smoke dome
components stack two tiers high giving a smoke dome of
approximately 32" in height.
Step ll: Smoke dome medium; part 11, two required, to
be "field modified"; smoke dome large, part 13,.
six required, to be "field modified"; smoke dome top
sloping, part 34, four required, to be used "as is".
Begin building the MAGNUM Model 60 Fire-
place smoke dome by cutting the haunch off of one end
of each of the two smoke dome large components,
part 13. After cutting the bottom length of the piece will
be 49 3/4"". (Figure 34) When cutting the haunch off be
sure to follow the angle of the sloping end in order to get
the proper slope angle to the cut.
L
PI(iUX J4
FIGURE 36
H
FIGURE 37
FIGURE 38
y\
REMOVE
FIGURE 35
FIGURE 39
FIGURE 40
FIGURE -41
FIGURE z-
Assembly Instructions - 60" (cont.)
Step 12: Cut one end of two of the smoke dome top large,
part 13, components at an angle parallel to the opposite
end of the piece. The bottom length of the cut piece should
measure 23 3/4 " (Figure 35).
Step 13: Place one modified smoke dome large piece
haunch cut off and a bottom length of 49-3/4" together with
another of the smoke dome large pieces that was angle cut
to 23 3/4" bottom length.and parallel angle) together on the
damper support and flush with the back wall of the firebox so
that the two smoke dome pieces meet along their field modi-
fied cut line. .
The overall length of the two joined smoke dome
pieces should be 73-1/2". (Figure 36)
Step 14: Repeat STEP 13 on the front damper support. Set
the front smoke dome components 2-3/4" back from the front
face of the front damper support (Figure 37).
Step 15: Fit the top sloping smoke dome side wall
components, part 34, in place between the front and back
smoke dome arrangements at each end of the smoke dome
Figure 38).
Step 16: Continue building the MAGNUM model 60
fireplace smoke dome by cutting two of the smoke dome
large pieces, part 13, to a bottom length dimension of
39 3/4". The slope angle of the cut should match the slope
angle of the end being cut. (Figure 39)
Place one of the modified smoke dome large
pieces (39 3/4" bottom length) on top of and flush with the
first tier of smoke dome components at the back of the first
course of smoke dome. The haunched, un-cut end of this
piece should be flush with the haunch end of the first tier
smoke dome below it. (Figure 41)
Step 17: Repeat this arrangement at the front of the smoke
dome.
Step 18: Cut each of the remaining two smoke dome medium
pieces, part 11, at an angle cut that is parallel to the
un-cut end and so that its bottom length is 23 3/4"
Figure 40). .
Step 19: Place one of the angle cut smoke dome top medium
pieces at the front and one at the back of the first tier smoke
dome so that they meet the smoke dome large
cut to 49 3/4" bottom length) already set in Step 11.
Figure 42)
24
Assembly Instructions - 60" (cont.)
Step 20: Set the.smoke dome sloping side walls, part 34, in
place between the front and back smoke dome arrangements
at their proper locations at each end of the smoke dome.
Figure 42).'
The overall width dimension at the top of the smoke
dome should be approximately 53-1/2 to 54". (Figure 43)
Note: The MAGNUM. model 60 is designed to operate with
two flues.. The top of the smoke dome allows for the place-
ment of two Isokern Modular Masonry DM 54 (14 inch I.D.)
chimneys or. two solid fuel listed metal chimneys of the
appropriate size.
Step 21: Smoke dome top plate small, part M77, two re-
quired; must field cut to fit.
Each of the two smoke dome top plate small, part
M77, will sit side by side on the smoke dome assembly, meet-
ing at the centerline of the smoke dome as a butt joint. The
top plate, as standard; comes with a recessed edge (or, a thick-
ened center). The recessed edge is approximately 3/8"and is
intended to be the bottom face of the top plate.
Each of the two top plate pieces must first be cut in
width in order to fit the overall smoke dome. Each top plate is
to have its width cut by 5". The cut edges must then become
the butt joint of the two top plates when set into place
Figure 44). Therefore, the width cuts for.each top plate must
be on opposite edges of each piece.
The un-altered end of each top plate sits at the end of
the smoke dome assembly and rests on the smoke dome slop-
ing side wall.
At the. recessed edge on the underside of the
un-altered ends of each of the two top plates, the thickened
part of the top plate will need to be ground down flush with
the recessed edge of the top plate so that the underside of the
top plate does not ride high on the smoke dome sloping side
wall.
Place the two top plate small. components on top of
the second tier smoke dome arrangement so that they meet at
the centerline of the smoke dome.
The outlet hole sits closer to the back of the smoke
dome. The smoke dome top plates should sit flush with the
front and back of the smoke dome. .
The top width dimension of the completed smoke
dome should measure approximately 53 1/2"- 54". Each top
plate small has a width cut dimension of approximately 27".
Two of the top plates butted together should equal the smoke
dome top width dimension of approximately 54".
The top plates may have some overhang at the ends
of the top plate:assembly, which is acceptable. (Figure 45)
FIGURE 43
FIGURE 44
FIGURE 45
I Assembly Instructions - 72" 1
The MAGNUM Model 72 is a custom unit made of standard parts
that are cut and fitted together in the field. The following cut and
assembly. instructions identify the parts by name and by part num-
ber, the quantity required, the field cut dimensions for each modi-
fied component.and the placement of each part in the assembly.
Note: At all component placement, be sure to mortar all contact
surfaces with Earthcore Mortar. Check for complete sealing of each
contact joint while assembly progresses (see "General Isokern
Assembly Instructions" on page 14 of this manual for mortar infor-
mation and instructions).
Step 1: Base plate, Part M91, two required : These pieces are used
as is",. without any field cutting required.
Set the four M91 base plate components on an appropriate
masonry foundation and positioned exactly where the firebox is to
sit. Set the two pieces so that the centerline of the grouping.is a butt
joint (Figure 46). This makes for square ends at both the left and
right ends of the grouping.
The, overall length of the base plate assembly should mea-
sure 85 1/2" and 28" inches deep.
Step 2: Side wall, part M60, eight pieces required, used "as is".
The firebox side wall components are used without modi-
fication. The side wall pieces stack four high on both the left. and
right hand ends of the base plate arrangement (Figure 47)
The stack of four firebox side wall components will be
assembled in conjunction with.the firebox back wall components
described in the following steps.
Step 3: Back wall, part M67, eight pieces required, four pieces to
be "field modified".
Cut the tongue off one end of each of the four M67 back
wall components. After cutting, each of these four cut pieces
should measure 38 1/2" from the cut end to the shoulder of the un-
altered end (Figure 48).
Step 4: Back wall, part M67, four pieces required, to be
field modified".
Cut one; end of each of the four M67 back wall compo-
nents. These four cut pieces should measure 34-1/2" from the cut
end to the shoulder of the un-altered end (Figure 49).
Step 5: Build the MAGNUM Model 72 firebox by setting a 38.1/2"
M67 Back Wall.(from Step 3) on the base plate with its tongue end
interlockedinto the firebox side wall positioned at the end of the base
plate (Figure 50). The
square cut end of this 38 1/2" M67 back wall compo- nent
should sit flush with the back of the base plate with its cut end past
the centerline buttjoint in the base plate arrangement Figure 50).
Next set
the 34-1/2" inch cut M67 piece so that its tongue end interlocks
with the side wall component at the opposite end of the base
plate. - The square
cut.end of the 34-1/2"'M67 should make a snug butt
joint with the square cut end of the 38 1/2" M67 compo- nent (Figure
51). FIGURE 4G
FIGURE 47
FIGURE 48
FIGURE 49
FIGURE SO
FIGURE 51.
FIGURE. 52.
F1V V ill: JJ
FIGURE 54
Assembly Instructions - 72" (cont.)
Step 6: Continue stacking the remaining three courses of
back wall. Be sure to reverse the positions of the 38 1/2"
M67 and the 34-1/2" M67 in each successive course. In
this way, the buttjoint where the two M67 components meet
are staggered from course to course. The
overall width dimension at the back of the firebox
should be 85 1/2" (Figure '52). Step
7: Steel angle of 4" x 6" x 5/16", one each required, 85
1/2" long. A
4" x 6" x 5116" steel angle needs to span the top
of theMAGNUM Model 72 firebox opening. This
steel angle sits on top of the uppermost side wall
component with the four inch leg in the horizontal position.
To avoid a thickness problem with the placement of
the steel angle it is necessary to cut a notch in the top side
wall component where the angle is to sit. This
notch should be cut approximately 5/16" deep.
The notch should start at the front face of the side wall
component (at both'the left and right hand walls) and run
to a point four inches back toward the firebox Figure
53). The
steel angle sits in this notch. The six inch leg
of the steel angle is in the vertical position and is to be
located in alignment with the front of the firebox. The ends
of the steel angle should not protrude beyond the outer
firebox side walls. (Figure 53) Mortar
between the steel and the notch in the top of
the side wall is not needed. Step
8: Damper support (front & rear), part M69, four required,
to be field cut to fit. Bevel
cut one end of each of two M69 damper supports
to 44" in length from the long point of the bevel cut
to the un-cut square end. The long point of the bevel cut
is to be at the top of the damper supports (Figure 54). For
best results a 15° bevel angle is suggested. Step
9: Bevel cut one end each of two M69 damper sup- ports
to 41 1/2" with the long point of the bevel at the bottom
of the damper support. The bevel angle must be at the
same angle in this case, 15' - to match with the bevel angle
of the other damper supports already cut in Step 8 Figure
55). Step
10: Set the cut damper supports along the front and along
the rear of the firebox using one of each of the cut pieces (
one with the long point at the top of the piece and
one with the long point at the bottom of the piece) together
as pairs. 27
Assembly Instructions - 72" (cont.)
The damper support pair at the front of the firebox
opening will be set into the 4" x 6" steel angle from Step 7
Figure 56).
Since the inside`comer of the steel angle is rounded, it
is a good idea to round the bottom front corner of the damper
support to match the steel.
With the bevel cut ends of the damper support pairs
meeting at the middle of the firebox, the bevel joint should be
an even and good fit. The.damper supports overall installed
length should be 85 1/2".
Notes:
A. Do' not join the damper supports with a butt joint. The bevel
joint discussed above is the REQUIRED type of joint for the
damper support.
B. The bevel angle of 15° is a convenient angle and is given as a
suggested angle. The angle of bevel could be
different just so the angles cut in the adjoining damper supports
join.
C. The angle of the bevel cut could be greater just.so the bevel
cut in each damper supportjoining pair is the same angle in order
to have a good fit at the joint. Step
11: Damper
support (left), part M64L and damper support right),
part M64R, one each required. To be used "as is". Set
the damper support (left) and the damper support right)
into place on top of the firebox side walls in between the front
and rear damper supports. Each
of the damper supports, right and left, is designed specifically
for its own side of the unit. When properly set, each damper
plate side piece sits flush with the outside face of the firebox
side wall: The interior bottom edge of the damper sup- port
end pieces align with the angle of the interior of the firebox side
wall (Figures 56, 57). For
the MAGNUM Model 72 the smoke dome com- ponents
stack two tiers high giving a smoke dome of approxi- mately
32 inches in height. Step
12: Smoke dome top large, part 13, six required, to be field
modified"; smoke dome top medium, part 11, two re- quired,
to be "field modified"; smoke dome top sloping, part 34, four
required, to be used "as is". Begin
building the MAGNUM model 72 fireplace smoke
dome by cutting the•haunch off of one end of each of the four
smoke dome top large components, part 13. After cutting the
bottom length of the piece will be 49 3/4". When:
cutting the haunch off be sure to follow the angle
of the sloping end in order to get the proper slope angle to the
cut (Figure 58)., FIGURE
55 FIGURE
56. FIGURE
57
r
FIGURE 60
2
IF IG-ORI62 FIGURE
63 Assembly.
Instructions - 72" (cont.) Step
13; Cut one end of the other. two smoke dome top big; part 13,
components at an angle parallel:to the opposite end of the piece.
The bottom length of the cut piece should measure 35
3/4" (Figure 59). Step
14: Place one modified smoke dome top big pieces (haunch cut
off and a bottom length of 49 3/4" together with one of the smoke
dome top big pieces that was angle cut to 35 3/4" bottom length
and parallel angle) together on the damper support and flush
with the back wall of the firebox so that the two smoke dome
pieces meet along their field modified cut line (Figure 60). The
overall length of the two joined smoke dome pieces.
should be 85 1/2". Step
15: Repeat Step 14 on the front damper support. Set the front
smoke dome components 2-3/4" back from the front face of
the front damper support (Figure 61). Step
16:. Fit the top sloping smoke dome side wall components, part
34, in place between the front and back smoke dome ar- rangements
at each end of the smoke dome (Figure 62). Step
17; Place one of the four modified smoke dome top big pieces (
haunch -cut off and 49 3/4" bottom length) on top of and flush
with the first tier of smoke dome components at the back of the
first course of smoke dome. The
haunched, un-cut end of this piece should be flush with
the haunch end of the first tier smoke dome below it Figure
63). Step
18:. Repeat this arrangement at the front of the smoke dome.
Step
19: Cut each of the two smoke dome top medium pieces,
part 11 at an angle cut that is parallel to the un-cut end and
so that its bottom length is 25 1/2" (Figure 65). Step
20: Place one of the angle cut smoke dome top medium pieces
at the front and one at the back of the first tier smoke dome
so that they meet the smoke dome top big (haunch cut off
and 50" bottom length) already set in Steps 14 and 15. The overall
width dimension at -the top of the smoke dome should be 65-
1/2" (Figure 66). Step
21; Fit the top sloping smoke dome side wall components, part,
34, in place between the front and back smoke dome ar- rangements
at each end of the smoke dome (Figure 67). 29
Assembly Instructions - 72 (cone.)
Note: The MAGNUM model 72 is designed to operate with
two flues. The top of the smoke dome allows for the place-
ment of two Isokern DM 54 (14 inch I.D.) chimneys or two
solid fuel listed metal. chimneys of the appropriate size.
Step 22: Top plate small, part M77, two required, to be used
as is". (Figure 6.6)
Place the two.top plate small components on top of
the second tier smoke dome arrangement so that they meet at
the centerline of the smoke dome., Typically, the, outlet. hole
sits closer to the back of the smoke dome. The top plates.
should sit flush with the front and back of the smoke dome.
Figure 69)..
The top width dimension of the completed smoke
dome should'measure. 65-1/2".( Figure 66) Each top plate
small has a width dimension of 32-3/4 inches. Two of the
top plates butted together should equal the smoke dome top
widthdimension of 6541,2". (Figure 69) The
top plates should be flush with the top sides of the
smoke dome assembly. Minor overhang (fractions of an inch)
of the top plate assembly is acceptable. FIGURE
68 FIGURE
FIGURE
FIGURE
65 65
1 /2" FIGURE
66 I+
a349i1 4 30
DM 54 Chimney System - 60 & 72"
NOTE: The maximum installed height of the Isokern DM 54 system on the models 60 & 72
dual chimney system is 15' without additional structural support.
31
Required Clearances (when sheathing protrudes beyond front of firebox)
FIGURE 70
FIGURE 71
8" FINISHED OPENING 8"
IN. DIM'N. IN. DIM'N.
Combustible sheathing such as, plywood and particle board may be used to cover the front face of the MAGNUM smoke
dome and be in direct contact with it. If sheathing protrudes in front of the firebox, application of such combustible sheathing must
assure that the sheathing is held a minimum of eight inches (8") away from each side of the MAGNUM opening and a minimum
of eight inches (8") above the top of the MAGNUM opening. (Figure 70 & 71) (9" for models 60 & 72)
Do not build a combustible framed wall out in front of the MAGNUM -firebox.
If sheathing and framing are to. be installed across the front face of the MAGNUM smoke dome, then the framing and sheathing
must be held a minimum of eight inches (8") above the top of the MAGNUM firebox opening. This means that framing and
sheathing across the smoke dome front must be kept at or above the MAGNUM damper beam.
32
Required Clearance to Combustible Framing
z
FIGURE 72
FIGURE 73.
MAGNUM fireplaces are tested and listed for one and one-half inch (1-1/2") clearance to uninsulated combustible fram-
ing material at the firebox sides and back.
Installation and use practices that are beyond the control of the manufacturer* can result in situations where clearance re-
quirements (as determined through testing and as stated by the manufacturer) are not maintained due to construction subsequent to
the installation of the Isokem unit. It is the general contractor's responsibility to assure that listed clearances to combustible fram-
ing and to insulation are maintained throughout the construction of the project subsequent to the installation of the Isokern unit.
To avoid causing a fire resulting in damage to property, personal injury or loss of life, do not pack or fill the required air spaces
with insulation or other material. No material is allowed in these areas. (Figures 72 & 73)
The manufacturer is not responsible for installation and use practices that are beyond the scope of the product as defined in the
product listing and in the installation manual.
33
Clearance to Insulation & Vapor Barriers
z
FIGURE 74
FIGURE 75
Magnum Series firebox backwall, side walls and the smoke dome back require 1 1/2" clearance. (Figure 74)
p all insulaion and vapor barriers a minimum 3" away from all Iskern surfaces. (Figure 75)
Keep all insulation, vapor barriers, "house wrap" paper and other insulating type membranes and products, including fiber-
glass, cellulose and other insulation, a minimum of three inches (311) away from all MAGNUM surfaces. (Figure 75)
When MAGNUM fireplace, installations are surrounded by walls that are to be insulated, the walls must have enough clearance to
the Isokern unit in order to maintain the three inch (3") minimum clearance to insulation. (Figure 75) Never spray the MAGNUM
fireplace with any type of sealer, insulation or other material.
If insulation or vapor barriers are used in walls surrounding the MAGNUM fireplace, it is strongly recommended that the walls be
sheathed with gypsum board, plywood, particle board or other material on the side facing the Isokern to assure the insulation and
vapor barriers remain in place and a minimum of 3" away from the unit.
34
r- Flush Wall Fire Brick Finish Detail
Drywall Flush With
Firebox Front
P
I'
Noncombustible
Facing Material '
FIGURE 761
Recommended Fire Brick Detail: When drywall is the wall finish at the MAGNUM face and flush with the rough face of the
MAGNUM firebox and damper beam, it is recommended when installing the required fire brick lining to the interior of the firebox,
that the leading edge of the fire brick - at the floor and.at the side walls of the firebox - be set flush with the MAGNUM's rough
firebox front. This will aid in the overall fit and finish of the MAGNUM fireplace front when the code required noncombustible
finished facings are applied.
This alignment of fire brick application, as shown above (Figure 76), allows the fire brick lining to be in the same plane with the
room's wall finish surface. With the fire brick set in this fashion the noncombustible finish facing material can be set tight against
the leading edge (or, "room edge") of the fire brick at the sides of the fireplace opening. At the same time the finished facing
material can lay flat against the room's finished wall surface.
35
Flush Wall Brick Finish Detail I
FIGURE 77
Important: Since there is no fire brick set along the top of the MAGNUM's firebox opening, when setting the noncombustible
finished facing material (code required and supplied by others) across the top of the firebox opening there may be a gap between the
back of the noncombustible finish material and the rough front face of the MAGNUM damper plate.
Be sure to check.for and fill any such gap with noncombustible Earthcore Mortar in conjunction with placement of the code required
noncombustible finish facing material set across the top of the firebox opening. (Figure 77)
WARNING: Avoid false chimneys.
Important: Failure to seal any gaps between the front face of the MAGNUM damper plate and the back of the noncombustible
finished facing material will create what is known as a "false chimney". A "false chimney", in this case, is the narrow gap
mentioned above) between the back of the noncombustible facing material at the top of the firebox opening and the rough front of
the MAGNUM damper plate. If left unfilled this gap creates a "false chimney" which can draw smoke, heat and fire out of the fire-
box into the space behind the noncombustible finish facing and on up into overhead framed spaces causing a fire hazard.
36
Interior Masonry Veneer. Fireplace Finishes & Clearances
3 1/2"
FIGURE 78
EXTENT OF STEEL L
FIGURE 79
3,7
Masonry Veneer Construction Details
FIGURE 80
Steel "L" or "angle" used to support masonry veneer
as it spans the MAGNUM's firebox opening must, in all
cases, have a two inch (2") minimum clearance to all combus-
tible materials. The vertical leg of the steel "L" cannot exceed
six inches (6") in height.
Note: Properly placed combustible sheathing is kept a mini-
mum of eight inches (8") away from the MAGNUM firebox
opening sides and top.
Important: Combustible framing members, normally set at
one and one-half inch (1-1/2") clearance to the sides of the
MAGNUM firebox must be moved to at least two inch (2")
clearance to the firebox sidewalls to maintain minimum two
inch (2") clearance to the steel "L" to avoid a potential fire
hazard.
Moving framing members two inches (2") away
from the firebox side walls will maintain the minimum re-
quired two inch (2") clearance from the steel "L" and, at the
same time allow full four inch (4") end bearing required for
the steel "L". (Figure 82)
Brick, stone or other masonry veneer finished fronts to
MAGNUM fireplaces are possible. Special attention is required
with regards to:
1) the placement of the proposed masonry
veneer facing and its interface with the MAGNUM fire brick lin-
ing, and
2) the masonry veneer and clearance to combustible framing and
sheathing from any steel "L" support used in the masonry veneer
around the front of the MAGNUM unit behind the veneer facing.
Any proposed brick, stone or other masonry veneer
facing must have sufficient foundation to support the full weight
of the veneer work. This may require review by a local structural
engineer prior to, construction.
The veneer facing, when installed, must present a tight
seal with the leading edge - the room edge - of the MAGNUM
fire brick lining at the sides of the MAGNUM firebox opening.
Figure 83)
A steel "L" will need to span the top of the finished
fireplace opening to carry the masonry veneer as it spans over the
MAGNUM firebox opening. (Figures 80 & 81)
By code requirement this steel "L" must have a mini-
mum four inch (4") end bearing. This bearing surface area shall
be provided in the veneer work. (Figure 80) It is important that.
the steel "L" is set.tight against the MAGNUM's damper beam
front and set in a mud joint to avoid creating a "false chimney"
between the back of the steel "L" and the MAGNUM's damper
beam front. (Figure 81)
FIGURE 81
38
Non-combustible Finished Facing requirements &
Clearance to Combustible Trim
Hearth Extensions:
A11.MAGNUM fireplaces shall have hearth extensions
of brick; concrete, stone, the or other code approved noncom-
bustible material. Suitable hearth extension material for the
MAGNUM fireplace shall be placed on the hearth'extension's
noncombustible substrate and must extend to at least twenty
inches (20") in front of the fireplace's finished opening and must
extend to at least twelve inches (IT), beyond the sides of the
finished fireplace opening. (Figure 83)
WARNING: rhe noncombustible hearth extension, by code,
must sit on noncombustible substrate which shall have no wood
underpinnings.
This means that off -grade wood floor systems shall be
constructed in such a way that all wood floor joists and sub -
flooring shall stop twenty inches (20") out from the front of the
MAGNUM firebox. (Figure 82)
Mantle and Mantle Shelf Clearances: Magnum fireplaces are
subject to the same -building code safety clearances to combus-
tible trim as with any radiant heat fireplace.
All combustible trim. shall be kept at least eight.inches
8") from the finished fireplace opening. Combustible trim
located along the sides of the fireplace opening, which project
more than one and'one-half inches (1-1/2") from the face of the
fireplace, shall have additional clearance from the eight inches
8") equal to the projection. Combustible projecting mantles - u
to.twelve inches (12") of projection - shall not be placed less
than fouteen inches (14") from the top of the fireplace opening.
Combustible mantles which project more than twelve inches
12") from the face of the fireplace, shall have additional clear-
ance from the fourteen inches (14") equal to the projection.
Note: The local authority having jurisdiction may require
greater clearances for projection combustible mantle shelves.
Be sure to check local building codes regarding required
clearances to. projecting combustible mantles.
Adjoining Walls. Side walls and walls to rooms adjoining
MAGNUM fireplace installation. s cannot be closer than
twenty-six in (26") to the finished fireplace opening.
Figure 83)
Note: "Clearance to Combustible Trim" are those distances
required to ensure that a fireplace mantle or facing will not
catch fire. In most cases the distances should also be adequate to
prevent any discoloration or warping due to heat. However each
installation presents a unique and completely different set of
circumstances involving many variables.
These include paint or finish composition, previous
exposure to heat, methods and quality of construction, air flow
patterns, etc. Because of these variables, the manufacturer does
not guarantee that heat warping or discoloration will never
occur.'
COMBUSTIBLE
MANTLE SHELF
20" -
HEARTH
EXTENSION
FIGURE 82.
FIGURE .83
COMBUSTIBLE
FLOOR SYSTEM
NING
WALL
rn Lfy®.«
FIGURE.85
FIGURE 86
Concrete Su
The MAGNUM fireplace is not rated for installation on a com-
bustible floor system unless used in the Fire-Lite application (see Pages
60 69). MAGNUM fireplaces must be built upon a concrete support
slab with no wood underpinnings. Proper reinforced concrete support
slab for MAGNUM installations may include the following types:
1:, Slab on grade: standard residential, minimum four inch (4") thick,
2500 psi concrete foundations on properly, compacted fill. This type
foundation' can support Isokern installations up to thirty feet (36') overall
height (brickledge installations not included). (Figure 84)
2. Slab -on -grade foundations; thickened and reinforced: for additional
load carrying. (Figure 85)
3. Off -grade slab on foundation walls and footings.
Projects with off --grade floor systems as well as upper story
installations require this type of support. (Figure 86)
When building off -grade support slabs the code required hearth
extension substrate should be built as a continuation of the support slab
for the MAGNUM unit. (Figure 86)
Supports for off grade slabs must be concrete or steel and ca-
pable of supporting the slab, Isokern unit and, the chimney.
For multi -floor and back-to-back installations proper
weight computation on an individual basis is required. Consult local
structural engineer for load bearing requirements.
Important: Foundations and footings must meet local code and be
approved by the local building authority. For any foundation design and
load requirements check with local structural engineer. It is the responsi-
bility of the General contractor to insure adequate foundations..
MAGNUM fireplace weights and "foot print" areas:
The total fireplace weight for each MAGNUM model
listed below includes: MAGNUM unit pumice parts only:
A. Model MAGNUM 28: 1040 lbs.
B. Model MAGNUM 36: 1300 lbs.
C. Model MAGNUM 42: 1420 lbs.
D. Model MAGNUM 48: 16001bs.
Totals are exclusive of any chimney components.
See page 43 for Isokern DM chimney component weights.
The "footprint" area for each model is as follows:
A. Model MAGNUM 48 @ 35.5" x 28" = 6.90 sq. ft.
B. Model MAGNUM 36 @ 43" x 28" = 8.36 sq. ft.
C. Model MAGNUM, 42 @ 49" x 28" = 9.52 sq. ft.
D. Model MAGNUM 48 @ 53" x 28" = 10.3 sq. ft.
Footprint" areas listed above are base plate dimensions for
each model' and are exclusive of code required hearth extension areas.
See page 39 for hearth extension dimensions.
Note: Additional. support slab area may be required at the side or back of
the MAGNUM unit to provide bearing for structural supports to a DM
54 offset chimney sequence.
See pages 47 - 50 for offset chimney support.requirements.)
40
DM 54 Chimney System: General Information
The DM 54 chimney is a dual module, refractory masonry .
chimney system:It is composed of two precast, mating components, the
outer casing block and an inner liner.
General Information:
This chimney system is designed for installation in
accordance with the National. Fire Protection Standard for Chimneys
and Solid Fuel -Burning Appliances, NFPA 211 and in accordance with
codes such as IC.C, BOCA Basic/National .Codes, the standard Mechani-
cal Code and theUniformBuilding Codes. Note:
Illustrations shown reflect "typical" installations with nominal dimensions
and are for. design and framing reference only. Always maintain
minimum required clearances to combustible materials and do not
violate any specific installation requirements. Required
DM 54 Chimney Clearance: The
DM 54 chimney system, rated UL 103HT, is listed for
zero clearance to normal construction materials. The
DM 54 chimney system may be enclosed in a wood chimney
chase at zero clearance to wood framing members. Note:
A firestop is required wherever a chimney passes between one . zone
of a building to another. Ex: When the chimney passes through the ceiling
into the attic area, there must be a sealed area around the chim- ney
so there isn't a chaseway for a fire to get to the attic. Since
lateral support is required for DM 54 chimneys the
framing members will be in contact with the DM 54 chimney system.
Important: "
Combustibles" are defined as "normal construction materials"
and are considered to be: framing materials, particle board, mill
board, drywall, plywood paneling, plywood sub flooring, and wood flooring.
WARNING:
Keep all insulation minimum of three inches (3") away from
all DM 54 chimney components. Failure to use manufacture's provided :
parts or variations in techniques and construction materials or
practices other than those described in this manual may create a fire hazard
and void the limited warranty. Mechanical
Vent Systems: It
is acceptable to use mechanical draft systems, if the venting companies
do the engineering calculations and make the necessary recommendations
for fan size and flue vent diameter following the guidelines
of NFPA 211/2006, pg. 211-13. Installation of such systems
must also follow the mechanical drafting company's explicit installation
and operation instructions. 41
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DM 5,4 Chimney: Component Weights
Isokern DM Chimney Weights:
Total installed Isokern DM chimney weight will vary ac-
cording to each specific installation. Total installed chimney weight
will be based on the overall height and the configuration, of the
chimney system.
Chimneys may be straight vertical stacks. of DM 54
outer casing and inner liner but may also include the use of offset.
chimney blocks, brickledge, chimney reinforcement, brick/stone .
veneers, cement crown caps and clay chimney, pot termination.
The DM 54 chimney component weights are as follows:
Small crown cap: 80 lb.
L;arge.crown cap:.100 lb.
Briekledge: 110 lb.
14 diameter :inner liner: 40 lb.
Outer casing.block: 90 lb.
Offset block*: 110. lb. .
Construction of an offset block sequence will shift .
a portion, if not all of the chimney load off of the.firebox and .
smoke dome. Additional reinforced concrete footing and slab area
may :need to be. provided adjacent to or as a continuation of the
primary support slab. area for bearing the steel or masonry support
required for an offset sequence. (See pages 47 - 50 following.)
Notes:
Plan chimney configuration carefully before construct-
ing the required reinforced concrete support foundation for the
MAGNUM fireplace. Be sure that enough structural masonry area
is available to supportany offset chimney sequence. included in the proposed
chimney design. Isokern
is not responsible for site specific structural sup- port
details and load specifications for MAGNUM fireplace. and DM
chimney system installations. Consult local structural engineer for
proper job -'specific support structure design, sizing and load bearing.
specifications. Unless
otherwise noted, all floor drawings in this manual are
merely illustrations to indicate the presence of an underlying noncombustible
support structure to the MAGNUM installation. SMALL
CROWN
CAP LAD
CRO
BRICKLEDGE
INNER .
LINER
OUTER .
CASING
OFFSET
BLOCK
i
o 0
0 1
o i 43
FIGURE 87
DM 54 :Chimney System: Installation Instructions
OUTER.
CASING '
12" HIGH
INNER -
LINER
FIGURE 88
6". HIGH
STARTER
i Tr-.TTT)INNERLINER . . .
FIGURE 90
IGURE 91
DM 54 Chimney Alignment:
Where the.chimney run is to be a straight vertical run
the DM 54 outer casing block sits directlyonto the Isokern smoke
dome lid. The DM 54 outer casing block, properly set is
intended to be flush with the back face of the firebox smoke dome
assembly (Figures 89 and 90 ). Set
in this way the DM 54 outer casing block will sit three
and three fourths inches (3-3/4") back from the front face of the
smoke -dome. (Figure 89). This
total set -back distance makes it possible for a three and
one-half inches (3-1/21') thick bearing header to pass over the
MAGNUM firebox smoke dome assembly and, for the DM 54
chimney to run straight up the back side of the bearing header Figure
91). Installation
of the DM 54 chimney: Begin
straight DM 54 chimney runs by setting a DM 54
outer casing block in a bed of mortar on top of the . MAGNUM
smoke dome lid with the outer casing block centered on
the lid from side to'side and flush with the back of the smoke dome
lid. Be
sure that the outer casing block aligns with the flue hole
in the smoke dome lid. Next
set the DM 54 inner liner's six inch (6") tall starter piece'
ffigure 89.) inside the first outer casing block. The factory"
version of the six inch (6") tall inner liner starter piece has:
a female end and a flat end. Set this inner liner starter with the.
flat end down. . Set
the downward end into Earthcore Mortar so that it is fully
seated to the smoke dome lid. WARNING:
I Do not mortar the air space between the liners and
the outer casing blocks. Starting
with the six inch (6") tall inner liner starter piece
creates six inch (67) staggered horizontal joints between
the inner liner and the outer casing block. Both'
the outer casing block and the inner liner com- ponents
have tongue and groove type detailing on each end to assure
alignment and interlock of the pieces as they are stacked and.
glued together. Notes:
If
the "factory" inner liner starter piece is broken or otherwise
unavailable then a full twelve inch (12") tall inner liner piece
can be cut to. six inches (6") in height to make an inner liner
starter piece. DM
54 chimney inner liners can be stacked with either the
male.or the female end up. In either case start the inner liner stack
with a six inch (6").starter.piece. . 44
r
DM 54 Chimney System: Lateral Support
CAUTION: Maintain three inch•(3") minimum clearance to
insulation from all DM 54 chimney component surfaces.
After setting the DM 54 inner liner starter piece, apply
mortar to the top of the starter liner. Continue the straight chim-
ney run by placing a full height inner liner onto the six inch
6") starter liner. The top of this full height inner liner will sit
6" above the top of the outer casing block that was previously
set.
This six inch (6") offset between joints of the inner
liner stack and the joints of the outer casing stack continues to
the top of the chimney run.
Continue the straight vertical DM 54 chimney by set-
ting an outer casing block onto the mortared top surface of the
preceding outer casing. The grooves'on the bottom end of the
upper outer casing block fit onto the tongues on the top of the
lower outer casing block. This assures proper alignment of the
two components.
Next place a full height inner liner onto the mortared
top end of the previously set inner liner. Proceed this alter-
nate stacking of outer casing blocks and inner liners until the
desired height of the flue is attained.
Mortar all outer casing blocks together and mortar all inner lin-
ers together. Do not mortar the space between the outer casing
and the liner.
Lateral Support for DM 54 Chimneys:
Where the DM 54 chimney is built up along an exteri-
or wall the vertical chimney system should be connected to the
structural wall system at a minimum of four foot (4') intervals.
This connection can be made using 18 gauge strap ties
Simpson Strong Tie CS coil strap, or equal).
Starting on one side of the DM 54 chimney, at four
foot (4') intervals up the structural wall adjoining the chim-
ney, connect one 18 gauage strap tie to the structural wall with
two, three inch (3") #8 (minimum) wood screws or masonry
anchors, as appropriate.
Next fold the strap around the three exposed sides of
the DM 54. Connect the strap to each of the three DM 54 faces
with two, one and' one-half.inch (1-1/2") long masonry anchors,
such as "Tapcon" or "Titen" screws. Fasten the strap back to
the structural wall with two three inch (3") # 8 (minimum)
wood screws or masonry screws, as appropriate. (Figure 92)
Where DM 54 chimneys are built up from the interior
walls the DM 54 chimney outer casing block is to be laterally
braced at ceiling and roof penetrations.
Pressure treated two inch (2") by four inch (4")
blocks, set at each side of the flue between the trusses or rafters
and fastened to the pre-engineered roof trusses or rafters with
two 16d common nails at each end, provides lateral support,
parallel with the framing.
Additionally, a two inch (2") by four inch (4") by
six feet (6') minimum pressure treated member (`rat run")
installed on each side of and butted up to the outer casing block
will provide lateral support perpendicular to the direction of
the truss or rafter framing system.
Fasten the perpendicular member with two 16d com-
mon nails to each intersecting truss or rafter.
The perpendicular bracing should be installed on the
top side the ceiling "level framing as well as on the bottom side
of the rafters. (Figure 93)
Note: A firestop is required wherever a chimney passes be-
tween one zone of a building to another. Ex: When the chim-
neypasses through the ceiling into the attic area, there must be
a sealed area around the chimney so there isn't a chaseway for
a fire to get to the attic.
45
DM 54 Chimney System: Lateral Support (cont.)
FIGURE 92
46
FIGURE .94-
DM 54 Chimney System:, Offset Block
FIGURE .95
FIGURE .96
DM 54 Offset Chimney Block:
For vertical DM 54 chimney to bypass overhead obstructions, .
the Isokern offset chimney block is used. Offset blocks are six inch
6") thick, single module chimney components, measuring twenty-one
and one-half inch (21-1/2") wide by twenty-five inches (25") long. The -
fourteen inch hole passes through the block at thirty (30°) degrees:
An offset chimney block can be set as the first flue component on top of
the MAGNUM smoke dome'.
When, building offset sequences it is necessary to support the
third offset block in the sequence and every third offset block thereaf-
ter. When using only one or two offset blocks no additional support is
required.
Offset sequences are best when built as low as possible in the
chimney.run to maximize performance.
Do not make support columns of brick, stone or wood. All support col-
umns must bear onto proper noncombustible foundations.
Isokern Offset Chimney Block Installation:
Isokern offset chimney blocks are stacked in a stair step fash-
ion with each successive,block overhanging the previous offset block
bythree'inches (3" ), allowing the flue -to rise at an angle of thirty (W).
degrees off of vertical. (Figure 94)
When building offset sequences check the interior flue
alignment as each offset"block is set to avoid creating overhanging
ledges on, the inside of the flue. Such internal overhangs will inhibit flue
drafting:
Each offset block is to be set fully in a bed of Earthcore
Mortar, completely sealing each offset block to;the underlying
component.
Offset chimney block sequences can be built to shift the
chimney:run to the left, right or to the rear of the firebox/smoke dome
assembly.
Offset blocks can be set in a spiraling rotation, thus moving the
chi mney.to a point that is diagonally away from its starting point.
Offsets to the Left or Right:
When offsetting chimneys to the left or right of the firebox it is not pos-
sible to build a support column directly under the third offset block.
To create proper support, construct a support column against
the firebox from bearing up to. the level of the smoke dome. Bridge
from the column over to bearing on the smoke dome with two pieces of
four. inch (47) by four.inch (4") by five -eighths inch (5/8") steel angle.
Figure 95)
On the steel angles build a masonry or steel support column up
to the underside of the third offset block in the sequence. (Figure 95)
NOTE: For offset chimney. block sequences that clear the side,wall
of the firebox below, it is allowable to support the first offset block
that clears the the firebox side wall and then to. proceed with sup-
ports at each third offset block thereafter. (Figure 96)
47
DM 54 Chimney System: Offset Block (cont.)
FIGURE 97
FIGURE 98 -
With straight chimneys the front of the DM 54 outer casing
block sits approximately three and three-quarters inch (3- 3/4") back
from the front of the smoke dome. This allows for a nominal 4" thick
wall to be flush with the room side face of smoke dome assembly
while the DM 54 chimney passes up the backside of the wall.
For a nominal 2" by 6" wall thickness the chimney can be
offset 3" rearward.
Set the first DM 54 outer casing block flush to the
back end of this offset block. This will leave a distance of 6-3/4"
from the face of the MAGNUM firebox smoke dome assembly to
the face of the DM 54 outer casing block. This allows for the smoke
dome to sit flush with the inside face of the 2" by 6" wall and the
straight chimney to run up the outside of the wall. (Figure 97).
For a wall thickness of 9", nominal 8" CMU plus 1-1/2"
furring strip - first set two offset chimney blocks in sequence,
rearward. This leaves a distance. of 9-3/4" from the front face of the
smoke dome to the front face of the DM 54 outer casing once the
outer casing block is set in position. (Figure 99)
Greater offset distances can be accomplished by building
with more offset chimney blocks. (Figure 98)
48
DM 54' Chimney System: Offset. Block (cont.)
Offset block Support Fouhdations:
it is requAred,that every third Isokern offset chimney block .
in. the *sequence be supported down to footings via concrete block or.
steel support columns.
Plan fireplace and:DM 54 chimney, systems carefully before
foundations are, laid to assure that proper footings are available to
support Isokern offset blocks chimney run.
To calculate the distance of Isokern offset chimney travel
in a straight line to the right, left or to the. rear of the firebox/smoke
dome assembly, proceed as follows:
Refer to.Figure 90: temporarily dry set a DM 54 outer casing
block in its proper location on top of the completed firebox/smoke
dome assembly as though starting a straight chimney.
If the offset sequence is to move to the: left then, starting
from the.right. side of the temporary DM 54 outer casing measure
left ward to the fir face of the overhead obstruction that needs to be
bypassed by the'vertical chimney run.
For accurate measuring drop a plumb line down from the far
e of overhead obstructi.on.to. the level of the. top of the smoke dome
assembly. Measure from the far, side of the temporary, DM .54 outer
casing to the plunib line.
This measurement, taken in inches and -divided by three
three inches of horizontal travel per offset block) gives the total nuffi-
ber of offset, blocks needed to accomplish the required travel distance.
TO calculate -the height that the offset block sequence will
require, take the total,numb,er of offset blocks needed to accomplish,
the travel distance (described above) multiplied,by 6".. This number is
the height (inches) that the offset sequence will require.
When establishing,the."far face" of the overhead
obstruction., be sure that the DM 54 chimney blocks can run straight
to chimney termination without further overhead obstruction since a.
second offset sequence is not allowed. (Figure 101)
ge sure that there is sufficient space beyond the "far face" of
the overhead obstruction to accept the DM,54 chimney's outer casingmg
dimension of 21 -1/2".
Support all offset sequences down to. bearing as previously'
discussed on page 47..
IFIGURE 99
49
PLUMBLINE
DM 54 Chimney System: Offset Block (cont.)-
MEASURE
TRAVEL
DISTANCE
OVERHEAD
OBSTRUCTION
FIGURE 100
TRAVELr
Notes:
Always support the last offset block in a sequence.
for full support of the DM.54 chimney where it returns to
vertical.
Support columns often carry the majority of the total
load of the vertical = chimney that is set onto the last offset.
block.
The total chimney weight above the last offset block
will be the total weight of the vertical chimney plus any ad-
ditional allowable loads such as the Isokein brickledge, its
related brick or stone veneers, and any crown caps, clay pots
or other masonry chimney terminations. '
Be sure the foundation under all support columns is
made of concrete or steel and designed to support the loads
applied to it.
Check with local codes and a structural engineer to.
confirm loading and foundation requirements.
Chimney runs are limited to one offset sequence per
chimney system.
Maximum horizontal distance of offset is six feet
61) and represents twenty-four offset blocks in sequence.
By code the maximum angle of offset for chimney
system is 30' off of vertical.
DM 54 Brick Ledge: .
The DM 54 brickledge is a 3 thick, 32-1/2" square;
steel reinforced, concrete and pumice slab (Figure 102).
It provides a 5" ledge at all four sides of the outer casing
block and is designed to support masonry veneers to DM 54
chimneys starting below the rafters and continuing to -termi-
nation. (Figure 103),
The component is cast with an octagonal hole in its .
center so that the DM 54 octagonal inner liner can pass
through it:
The brickledge has four 2-1/2" holes through it that
align.with the hole in each of the four comers of the DM
54 outer casing block. These four holes are provided for
reinforcement of the chimney, stack by the insertion of #4,
minimum, steel reinforcing rods and subsequent grouting.
Figure 104)
The brickledge is intended for use in chimneys that.
rise through the roof only where all four sides of the chimney
are bounded:by the roof.
WARNING: I To maintain structural performance the DM 54
brickledge must hot be cut or altered in any way.
50
DM 54 Chimney System: Brick Ledge Installation
DM 54 Brick Ledge Installation:
Use of the brickledge will require a roof framing rough
opening of at least 34" in width. The required opening dimension
along the length of the rafter, where the chimney is to penetrate the
roof line, will increase above 34" relative to the pitch of the roof.
As the DM 54 outer casing and inner liner assembly ap-
proaches the roof penetration set an outer casing block to a level of
approximately 6" below the low side of the roof framing.
Figure 105)
The alignment tongues on the top of this outer casing block
must be ground off.to leave a flat contact surface for the brickledge.
Temporarily leave out the inner liner that fits this outer casing block.
Set. the Isokernn brickledge onto the flat top surface of the
outer casing in a full bed of Earthcore Mortar. Be sure to align the
four 2-1/2" holes in the brickledge with the matching holes in the
outer casing block.below it. Return to setting the next inner liner
in the sequence. This inner liner comes up from'below and passes
through the octagonal hole in the brickledge. The liner's top end
will be approximately 3" above the top surface of the brickledge.
Set the next outer casing block onto the top of the brickledge in a
bed of Earthcore Mortar.
Insert one piece -of #4 (minimum) steel reinforcing rod into
each of the four 2-1/2" holes in the brickledge. The reinforcement
rods must start from a depth of at least 18" below the bottom of the
brickledge. (In some cases, a minimum reccommendation could
be 5')
Consult local structural engineer for proper job -specific
support structure design, sizing and load bearing specifications.
If short lengths of steel rods are used be sure to properly
lap and wire tie all splices in the rebar. As the reinforcing progress-
es; completely fill the holes with grout. Suitable grout can be a pour-
able mixture of Portland cement.and sand or Portland cement, sand
and.pea gravel. The rebar.must be fully embedded in grout.
Leave enough of the #4 steel reinforcing rod exposed
above the brickledge so that as the stacking of outer casing blocks
continues to termination the reinforcing rods and grout can continue
through the stack. Reinforcing shall continue to.chimney termina-
tion.
All DM 54 chimneys that include the DM 54 brickledge
must be reinforced as described above.
CAUTION: When, using the Isokern brickledge it is required that
the MAGNUM firebox/smoke dome assembly include the place-
ment of a 4" by 4" by 3/8" minimum steelangle across the firebox opening. (
See page 55 for "Structural Information" for details regarding
specification and placement of steel angles in MAGNUM fireplaces.)
Lateral
Support for Isokern Brickledge:Chimneys: Once
the -DM 54 chimney and brickledge are assembled and
after -the intended masonry veneer has been installed on the brickledge,
be sure'to brace -the chimney following the guidelines on page:
45 of this manual for Lateral Support of DM 54 chimneys. BRICK
LEDGE
FIGURE
102 FIGURE
103 FIGURE
104 i
o -1 0
0 o
i
DM 54 Chimney System: Load Capacity - Brick Ledge
FIGURE 105
Load Capacity for. DM 54 Brickledge:
The sources•of load delivered into the Isokern brick-
ledge are:
1) the total physical load of brick, stone or other masonry
veneer on the brickledge, and
2) loading due to the force of wind delivered against the ex-
posed height of the chimney mass.
The required height of any chimney is governed by
applicable local building codes. The overall finished
height of any chimney varies based upon site -specific
conditions (eg. elevation of roof line, roof pitch, distance .
of the chimney from the ridge, etc.).
It is relatively simple to calculate the total physical
load on the brickledge resulting from the physical weight of
applied veneers built to code height, however, calculation val-
ues for load to the brickledge due to wind are site specific and
based on local variables such as wind speed zone, exposure
classification, eave height and roof pitch of the structure, as
well as height of chimney mass exposed to wind.
Important: The total load delivered into the brickledge is job
specific and will be the sum of:
1) the physical load from veneers, plus
2) the load due to wind.
The total of physical load and load due to wind must
not exceed ninety four hundred (9400) pounds.
Notes:
Calculation of wind load requires the services of a
local structural engineer who can evaluate wind load for the
specific structure and site in question.
Do not subject the brickledge to unequal loading
when applying veneers. Build veneers equally on all four sides
of the brickledge.
Brcckledge Veneer Finish and Flashing Details:
When applying brick, stone or other masonry veneer
to the Isokern brickledge standard good building practices for
masonry veneer work should govern weather -proofing details
and the placement of flashings.
A typical flashing detail would be to field fabricate an
aluminum or galvanized sheet metal flashing, approximately
thirty-two, inches (32")square with a twenty inch (20") square
hole in it, to serve as an inner flashing.
Figure 106)
Place the inner flashing on the first DM 54 outer cas-
ing block that fully clears the roof line. Keep the flashing to
about a one-half inch (1/2") lap onto the top of the outer casing
block. The twenty inch (20") square hole in the flashing should
fit to the outside of the alignment grooves on top of the DM 54
outer casing. Continue the DM 54 chimney up to the required
termination height.
Once the masonry veneer is in progress the inner
flashing is set into a horizontal joint in the veneer at a level
above all other roof deck flashings, chimney -to -roof flashings
and counter flashings. Weep holes should open to the outer
face of the veneer at vertical mortar joints located at the level
of the inner flashing. (Figure 167)
Where moisture may develop between the DM
54 outer casing and the chimney veneer, inner flashings as
described above will help to divert such moisture to exterior
face of the veneer by way of the weep holes and thereby keep
such moisture from working its way down between the veneer
facing and the DM 54 outer casing and into the interior of the
structure below.
52
DM 54 Chimney System: Crown Caps
DM 54 Small Crown Cap (Figure 108)
The DM 54 small crown cap is a. prefabricated cement
weather cap that measures 26- 1/2" square and 3" thick. The
small crown cap is designed and installed the same as the large
crown cap..
The small crown cap is intended for use where DM
54 chimneys are to receive thin veneers and cultured stone that
do not require the installation of the Isokern brickledge. The
small crown cap is also suitable where DM 54 chimneys are to
receive a stucco finish.
Other chimney terminations are possible with DM 54
chimneys. Check local codes for use of custom chimney termi-
nations and decorative shrouds.
DM 54 Large Crown Cap (Figure 109)
The DM54 large crown cap is a prefabricated cement weather
cap for masonry.veneer chimneys. The large crown cap measures
374/2" square and is 3" thick at its center. The
component has an octagonal hole at its center so that
the top inner liner of the DM 54 chimney stack can pass through
it. The crown cap then sits on the top most DM 54 outer
casing block. To
set the large crown cap the last inner liner should be
at least 3" above the last outer casing block in the chimney stack.
Mortar
the top of the last outer casing block. Set the large
crown cap over the inner liner and onto the top of the last outer
casing. in the stack. Caulk
or mortar the joint between the octagonal liner and
the crown cap where the liner comes through the top sur- face
of the large crown cap. INNER
FLASHING
FIGURE
106 FIGURE
107 SMALL
CROWN
CAP FIGURE
LAD
CRO
FIGURE
109
DM 54 Chimney System: Height Requirements
ROOF RIDGE
WORK POINT 4
N Z
CF IMNE g
CRICKET ^
SECTION
THRU ROOF
FIGURE 110
10'-0"
WORK
POINT N
CF IMNE Z
CRICKET
4
m
SECTION
THRU ROOF I I
FIGURE 111
FIGURE 112
Chimney Height Requirement:
The required minimum chimney height above the roof
and adjacent walls and buildings is specified by all major build-
ing codes and is summed up in what is known as "the 2 foot in
10 foot rule":
1) If the horizontal distance from the roof ridge to the opening
of the chimney is less than 10', the top of the chimney must be
at least 2' above the roof ridge (Figure 110).
2) If the horizontal distance from the opening of the chimney
to the roof ridge is more than 10' then a chimney height "work
point" is established on the roof surface 10' horizontally from
the opening of the chimney. The top of the chimney must be at
least 2' above this work point (Figure 111).
3) In all cases, the chimney cannot be less than 3' above the
roof at the edge of the chimney (Figure 112 & 113).
A simple example of this would be if the roof is flat
then the chimney would need to be at least 3' above the roof
surface. Or, if the chimney penetrates the roof at the ridge then
the chimney must be at least 3' above the ridge. (Figure 114)
Note: The "2 foot in 10 foot rule" is necessary in the interest
of fire safety but does not ensure smoke -free operation of the
fireplace. Trees, buildings, adjoining roof lines, adverse wind
conditions, etc. may require a taller chimney for the fireplace to
draft properly.
Chase Enclosures: DM 54 chimneys can be enclosed within a
wood framed chase at zero clearance to wood framing members.
Chase enclosures need to be built to local wind load require-
ments and shall be structurally independent of the Isokern chim-
ney. As with all chimney installations, avoid overhead obstruc-
tions such as trees, power lines, etc.
CAUTION: If insulation is used in chase walls the fireplace
and chimney must not be placed directly against it and must be
kept a minimum 3" from all fireplace and chimney components.
It is recommended that where fireplace and chimney chases are
insulated or have vapor barriers that the inside face of the chase
first be covered with gypsum board, plywood, particle board or
other sheathing material to assure that insulation and vapor bar-
riers remain in place and a minimum 3" away from the unit.
WARNING: J Do not pack insulation around the Standard fire-
place or chimney. Do not insulate the chase cavity with blown or
loose -fill type insulation materials.
Chase Top Flashings:
Non-combustible, weather tight chase flashing must be
used to cover the top of the chimney chase. Be sure to seal the
joint where the DM 54 liner passes through the chase top flash-
ing for positive weather seal. Chase flashings may be supplied
by others.
54
Structural . Information
The MAGNUM firebox/smoke dome assembly has
a load oapacity that allows for the fireplace system to carry a
limited amount of straight, vertical DM 54 chimney sections.
The loadcapacity. for each model, stated as maximum DM 54 chimney
heights,. are as follows' MAGNUM
Mode136: Max: 57 feet of DM 54 MAGNUM
Model 42: Max. 64 feet of DM 54. MAGNUM
Model 48: Max. 72 _feet of DM' 54 These
chimney heights are for straight chimneys (no offsets)
and are exclusive of brickledge.• Important:
DM 54 chimneys taller than the above listed maximum
heights •require a steel. angle (minimum of 4".
x V x 3%8") be set across the MAGNUM firebox opening when
assembling the unit as"a' structural. lintel. . This
steel lintel shall span the MAGNUM firebox opening,
bearing:fully on the front 4 inches of the firebox . side
wall components: The. vertical leg of the angle steel lintel should
turn up and -sit in front of the MAGNUM damper plate. component. (
Figures 113 & 114) Important:•
The' application of the -steel angle as described above
is also required in all MAGNUM installations where the brickledge-
is used. This
required steel lintel placement is in addition to the
reinforcing required for DM 54 chimneys with brickledge as
described on page 50. Important:
For. DM 54 chimneys with both offsets. and a brickledge
it is important to fully support the last offset block where
the chimney returns to vertical. This is required in order to
provide complete vertical support for the brickledge and its related
loads. Important:.
When placing steel.angles or any other steel sup- port
members into the MAGNUM fireplace. structure maintain a
2". minimum air space around steel members for:clearance to combustible.
members and combustible surfaces. STEEL
ANGLE
FIGURE
113. FIGURE
114 55
Common Chimney Terminations
Two chimney terminations are offered by Isokern, the DM 54
large crown cap and the DM 54 small crown caps. These are cement
crown caps designed to provide a weather cap to the DM 54 chimney
system. Their design is typical of the cement caps found on traditional
masonry chimneys.
Due to owner preference and architectural design criteria other
chimney terminations can be used alone or in conjunction with the crowr
caps. Special design caps may be designed and constructed by others anc
must be fashioned so as not to restrict the flow of smoke and gasses out
the top of the flue opening. Figure 116 depicts common chimney termi-
nations.
Check with local building codes to establish the need for chim-
ney caps and spark arrestors or for any limitations to their design and
FIGUR
56
FIGURE 117
ANCHOR
PLATE
FIGURE 118
INSWOOL
BLANKET
FIGURE 119
SMOKE DOME
TOP PLATE
FIGURE 120
Class A Metal Flue
MAGNUM fireplaces are tested and listed for use with
factory -built metal, Class "A" (solid fuel) chimneys as an option.
Any Class "A" or UL 103 listed metal chimney system is
accetable for use on an Isokern system. (Figure 117)
Class "A" Metal Flue Types:
The selected factory -built metal chimney for use with
the fireplaces, at a minimum, must be listed by a recognized
agency for solid fuel and as tested to UL 103, for continuous use
of one thousand degrees (1000°) Fahrenheit and intermittent use
of seventeen hundred degrees (1700°) Fahrenheit.
The factory -built metal flue design can be from the following
types:
1. Non -insulated completely thermal siphoning,
double -wall, air-cooled solid fuel rated chimneys listed to UL
103, ULC S629.
2. Double -wall with solid -pack insulation.
3. A combination of double -wall, solid -pack insulation and air
space (triple -wall).
4. Triple -wall air space solid fuel chimney.
5. Listed chimney liners conforming with the seventeen hundred
degree (1700°) Fahrenheit requirements of UL 1777 or ULCS635
or ULC640 may also be used with Isokem fireplaces.
Notes:
The selected, approved chimney manufacturer must pro-
vide the masonry anchor plate designed to fit their flue system.
Figure 118)
All chimneys and chimney liners must be installed in
accordance with the manufacturer's installation instructions and
under the terms of their listing for use with open faced fireplaces.
Minimum flue size for the Magnum fireplace is twelve
and three-quarter inches (12-3/4") inside diameter.
Maximum height of a metal flue system is not required
as all the load can be taken off the firebox.
57
Specialty Applications - Two Story Stacked Installations
General Information:
To install one MAGNUM fireplace and DM 54 chim-
ney system above another, as in a two story stacked installa-
tion, both the upper and lower fireplace installations require a
concrete slab that is supported down to footings via concrete
or steel support structure.
Frequently in two story stacked installations the
lower unit is supported by a slab -on -grade (as in a basement),
whereas the upper unit is a typical off -grade support slab.
The off -grade slab for the upper unit must be built with suf-
ficient width in order to accommodate the width of the upper
fireplace plus the width of the by-passing chimney system
rising from the lower unit. (Figure 121)
The slab for the lower unit will need to be built with
enough width to provide support for the lower fireplace unit
plus the bearing surface for the support columns needed to
carry the offset chimney sequence of the lower system. (Figure
121)
Floor -to -Floor Height Considerations:
In order for the lower fireplace installation to have
enough overhead height clearance for its chimney to rise at a
thirty degree (30°) angle of offset (maximum angle of offset
as allowed by code) and bypass to one side of the firebox in
the upper location there are minimum required floor -to -floor
height dimensions. (See chart, page 54, Dimension "F")
The minimum floor -to -floor height required for an
installation is determined by calculating the total horizontal
distance the lower flue must travel to the left or right for it to
bypass to one side of the upper fireplace
see calculating offsets on page 41).
The total amount of horizontal chimney offset travel
distance will be determined by two factors:
1. The width dimension of the upper unit; and
2. The horizontal distance between centerlines of the pro-
posedupper and lower units.
Example:
If the upper fireplace and the lower fireplace sit on
the same centerline then the required floor -to -floor dimension
is at a maximum (See Figure 122 and chart, page 50 dimen-
sion, column "F".)
For every 3" of horizontal distance separating the
centerlines of the upper and lower units the overall height of
the offset sequence is reduced by one offset block or by 6".
Notes:
A raised hearth at the lower fireplace will increase
the minimum floor -to -floor height requirement by the height
dimension of the raised hearth.
In the interest of clarity the drawing on pages 58 &
59 (Figure 121 & 122) of the offset chimney sequence does
not show the offset block support columns as required for
offset sequences and as described on page 47 of this manual. FIGURE 121
Specialty Applications - Two Story Stacked Installations (cont.)
The following chart gives important dimensions needed
when laying out two story stacked MAGNUM fireplace units. Chart
dimensions assume that both the upper and lower fireplace units sit on
the same centerline.
Upper/Lower A B C D E F
36/36 43 51 30 81 70 142
36/42 43 51 33 84 70 142
36/48 43 51 35 86 70 142
42/36 49 54 33 87 70 148
42/42 49 54 33 87 70 148
42/48 49 54 35 89 70 148
48/36 53 56 35 91 70 149
48/42 53 56 35 91 70 149
48/48 53 56 35 91 70 149
Chart Dimension Description: (Figure 123)
A" is the outside width dimension of the MAGNUM fireplace model
chosen for the upper unit.
B" dimension represents distance (taken in the direction
of the chimney offset) from the centerline of the lower fireplace to the
outside face of the eight inch (8") thick bearing
wall underpinning the upper unit's support slab.
C" dimension is the distance (taken away from the direction of the
chimney offset) from the centerline of the lower or the upper fire-
place, whichever is the larger plus eight inches (8") to the outside of
the eight inch (8") thick bearing wall for the upper unit's support slab.
D" is the outside -to -outside dimensionof the two eight inch (8") thick
bearing walls underpinning the upper unit's support slab. "D" is
also the width of the upper unit's support slab and includes the ad- ditional
space for the width of the DM 54 chimney as it bypasses the upper
unit. "D" is also the sum of `B" plus "C". G°
E" is the height of the MAGNUM fireplace chosen for the lower unit and
includes the Isokern three inch thick base plate. "E" is seventy inches (
69 ''/2" actual) for all of the MAGNUM models. F"
is the dimension from the top of the support slab of the lower unit to
the top of the support slab of the upper unit. "F" dimension is equal to "
E" dimension plus six inches (6") for the thickness of the upper slab,
plus six inch (6") thickness of every offset block needed to make the
required horizontal travel distance. Notes:
If
raised hearths are planned for the lower unit then "F" dimension
will increase by the height of the raised hearth at the lower unit.
In
the interest of clarity the drawings on pages 58 and 59 Figures
121 & 122) of the offset chimney sequence do not show the offset
block support columns as required for offset sequences. See page
47 for complete offset support instructions. Consult
local structural engineer for support slab load calculations.
FIGURE
122 59
Fire-Lite Application - General Information
General Information:
The Fire-Lite is a fireplace designed, tested and listed
with the ability to be installed on a combustible floor system.
The design and installation require that the system use
FTF-13, Class A metal flue, or equal.
Also the Fire-Lite assembled unit must sit on a raised,
noncombustible platform.
The parts of the Fire-Lite fireplace are an applica-
tion of the Magnum Series Fireplace. The requirements for the
Magnum fire brick installation will apply. See page 19 of this
manual for fire brick installation.
For flush hearth Fire-Lite installation, please call the
technical department at: (800) 642-2920.
Intended Use Statement:
The Fire-Lite is intended to burn solid wood fuel,
propane or natural gas. The fireplace is intended for use as a
supplemental heat source only and is not intended for heavy
use as a primary heating system.
Notes:
The local authority having code jurisdiction should
be consulted before installation to determine the need to obtain
a permit.Areas of concern are the same as stated on page 5 of
this manual.
Do_ not scale drawings. Illustrations in this manual are
not to scale and are intended to show "typical" installations.
Nominal dimensions are given for design and framing ref-
erence only, since actual installations may vary due to job
specific design preferences. Always maintain the stated mini-
mum clearances to combustible materials. Do not violate any
specific installation requirements.
The Fire-Lite has been tested and listed by Warnock
Hersey (Report Nos. J20004277-231 and 632-912500) to UL
127-1999. These units are intended for installation in residen-
tial homes, and other buildings of conventional construction.
Fire-Lite fireplace systems are also designed for installation
in accordance with the National Fire Protection Association
Standard for chimneys, fireplaces, vents and Solid Fuel-Bum-
ing Appliances (NFPA 211).
Fire-Lite fireplaces are not listed for use with fireplace
inserts.
Safety Instructions:
Because the Fire-Lite is an application of the Mag-
num Series fireplace, the safety instructions are listed on pages
5 & 6 of this manual. Please refer to them and read them care-
fully before installing your Fire-Lite unit.
FIGURE 123
60
4 Fire-Lite Application - Required Clearance To Combustibles
for installation with "clearance to
combustibles" as follows:
Four inches (4") clearance to the combustible floor.
Zero inch (0") clearance at the Fire-Lite smoke dome
front wall (Figure 125).
One and one half inches (1-1/2") clearance at the
Fire-Lite firebox back wall and side walls;
Two inches (2") minimum air space to combustibles
at all FTF-13 metal chimney components' outer layer;
Three inches (3") clearance to insulation from all
Fire-Lite firebox, smoke dome and chimney components.
Important: "Combustibles" are defined as "normal construction
materials" and are considered to be: wood framing materials, par-
ticle board, mill board,plywood sub -flooring, plywood paneling
and wood flooring. Sheathing materials, such as plywood, particle
board
and drywall may cover the smoke dome front at zero inch
0") clearance. All combustible sheathing materials must be held
eight inches (8") away from the sides of the firebox opening and
eight inches (8") above the top of the firebox opening.
Drywall must be cut two inches (2") back from the
firebox opening sides and eight inches (8") above the top
of the opening.
CAUTION: Maintain a minimum of three inch (3") clearance to
insulation and vapor barriers.. (Figure 34, page 75)
Combustible objects, such as furniture, placed in front of
the fireplace must be kept a minimum of forty-eight inches (48")
from the fireplace opening.
Notes:
The Fire-Lite Application is designed, tested and
approved for installation at a minimum of four inches (4") above
combustible floor systems per the installation specifications given
in this manual.
Any portion of the "combustible floor system left exposed
under the base plate is to be covered with minimum 1" thick
ceramic fiber insulation board rated to 2100 degrees Fahrenheit
Figure 129).
All Fire-Lite Series result in the finished fire brick
floor of the firebox being at least eight inches (8 1/2")
above the combustible floor system (Figure 130).
FTF 13
Metal Chimney
Zero Clearance
Fire-Lite Stand
4" min)
Hearth
Extension
20"Min)
Combustible
Floor System
FIGURE 124
Zero Clearance
Fire-Lite Stand
Hearth
Extension
20"Min)
Noncombustible
Substrate
Combustible
Floor System
FIGURE 125
IGURE 126
2"min- 2"min.
1'h"min.
1 'k" min.
in)
61
Fire-Lite Application - Combustible Floor System
Floor framing for a Fire-Lite installation will need to
be designed and built to accept substantial dead loads spread
over a relatively. small floor area.
The following weights and sizes can be used to cal-
culate Fire-Lite loading. Consult with local structural engineer
for proper sizing of structural floor frame members for specific
installations.
Load Calculations:
Total dead load amounts include (but are not neces-
sarily limited to) the following items and their corresponding
weight estimates listed below:
1. Fire-Lite unit model weights:
a. Model 36 FP: 1360 lbs.
b. Model 42 FP: 1450 lbs.
c. Model 48 FP: 1600 lbs.
2. Damper, fire brick and mortar: 450 lbs.
3. Raised platform: 40 lbs.
4. Fireplace finished facing: approx. 2001bs.
5. Weight of metal flue: negligible
By adding the weight of the appropriate Fire-Lite
Model listed in #1 above to the allowance given for each item
in 2 through 5, above, the total weight of the Fire-Lite Series
can be estimated.
Total approximate Fire-Lite Series weight estimates for
each Model:
Model 36 FP @ 1360 lbs. + items 2 thru 5 @ 690 = 2050 lbs.
Model 42 FP @ 1450 lbs + items 2 thru 5 @ 690 = 2140 lbs.
Model 48 FP @ 1600 lbs + items 2 thru 5 @ 690 = 2290 lbs.
The floor area for each model is as follows:
Model 36 FP @ 43" x 25.25" = 7.54 sq.ft.
Model 42 FP @ 48.5" x 25.25"= 8.50 sq.ft.
Model 48 FP @ 53" x 25.25" = 9.30 sq.ft.
Notes:
These dead load totals are in addition to the live load
and other dead load requirements for the specific site's pro-
posed floor.
The load estimates given above for items are esti-
mates only and may not accurately define total loads related
to the completed fireplace due to material choices that are at
owner option..
Consult your local structural engineer for proper floor
system design, sizing and specifications.
Isokern is not responsible for structural floor support
details for the Fire-Lite fireplace. Unless otherwise noted all
floor framing drawings in this manual are merely illustrations
to indicate the presence of an underlying floor system.
FIG
FIGURE 128
aryl. .-
62
Fire-Lite Application - Raised Metal Platform
The noncombustible raised platform must be set with a minimum one and one half inch (1-1/2") clearance to the wall
directly behind the Fire-Lite assembly.
Raised Platform:
Nominal four (4") metal base. (Figure 129).Set the Fire-Lite base plate in a mortar bed on to the non-combustible raised
platform.
Metal safety strip - a generic 26 ga., four inch (4") wide galvanized metal strip - must be inserted to approximately two
inch (2") beneath the platform at the front of the noncombustible raised platform. The safety strips must extend out from the front
of the raised platform at least two inches (2") and must extend to at least two inches (2") beyond the ends of the raised platform.
Any overlaps in the length of the safety strips should be a minimum of two inches (2") for continual coverage of the combustible
floor at the front of the fireplace (Figure 130).
The exposed combustible floor within the perimeter formed by the noncombustible raised platform must be completely
covered with one inch thick ceramic fiber insulation board (Figure 128). The board is dry laid to the floor within the block perim-
eter.
The ceramic fiber board must have a thermal conductivity rating equal to or greater than 0.4 Btu-in/hrsq. ft-degree Fahr-
enheit. (Reference: Harbison -Walker, 600 Grant St., Pittsburgh, PA 15219, ph. 412-562-6200: "Insboard 2100" or equal.)
Fire Brick Installation: Follow instructions on page 19 of this manual.
1 1/x" min.
Fire-Lite Stand
Noncombustible
20" Hearth Substrate 14GA. Metal Joists
@ 12" O.C. with a 3" Dia.
911/ O
Hole for Air Flow
14GA. Metal Joists
@ 12" O.C. with a 3" Dia.
Hole for Air Flow
1"Thick Insboard
Combustible
on Wood Sub -Floor
Floor System
FIGURE 129
26 Gauge Metal
Safety Strip
FIGURE 130
63
Air Flow Passage
Fire-Lite Application - Raised Metal Platform (cont.)
14GA. Metal Chanel
with a 3" Dia. Hole
Centered in each 12" Cavity
1" Thick Insboard
onWood 5ub-Floor
Exterior
FIGURE 131
64
Fire-Lite Application - Flush Wall Finish Detail
FIGURE 132
y k
FIGURE 133
Fire-Lite fireplaces are designed to be installed so that the rough front face of the firebox and damper plate project into the room
approximately one-half inch (1/2") beyond the face of the rough framing members that create the room's wall surface. The smoke
dome unit sits two'and three -fourths inches (2 3/4")'back from the rough face of the firebox and damper plate. This set back dimen-
sion allows,for one and one-half inch (1 1/2") framing plus one-half inch (1/2") thick wall board to pass in front of the smoke dome
and at the same time align flush with the room face of the Fire-Lite damper plate.
Clearance to Drywall:
Drywall can be placed directly in contact with the front of the firebox and smoke dome. Set in this position, framing and wall board
are kept to the required eight inches (8") above the firebox opening top. (Figure 132)
Important: Do not build a frame wall in front of the MAGNUM firebox and damper plate. (Figure 133)
65
4
FIGURE 134
FTF-13 or Equivalent Chimney System
The Fire-Lite is designed, tested and listed for use with
FTF-13 Class A metal chimney system, or equal.
Do not modify or alter metal flue or metal flue components
as this could result in an unsafe and potentially dangerous
installation that may cause a serious hazard and void the
listings, approvals and the limited warranty of the system.
The following installation instructions refer to FTF-13
chimney system. If "equal" metal chimney systems are used,
follow the metal flue manufacturer's explicit installation
instructions.
General Information:
This chimney system is designed for installation in
accordance with the National Fire Protection Standard for
chimneys and solid fuel burning appliances, NFPA 211 and
in accordance with codes such as BOCA Basic/National
Codes, the Standard Mechanical Code and the Uniform
Building Codes.
Note: Illustrations shown reflect "typical" installations with
nominal dimensions and are for design and framing reference
only. Actual installations may vary due to individual
design preferences. However, always maintain minimum
required clearances to combustible materials and do not
violate any specific installation requirements.
WARNING: I Failure to use manufacture's provided parts,
variations in techniques and construction materials or
practices other than those described in this manual may create a fire
hazard and void the limited warranty.
Chimney Clearance Requirements:
The FTF-13 chimney's outer layer requires a
minimum two inch (2") air space to combustibles.
The chimney system must be enclosed when
installed in or passing through a living area where
combustibles or people may come in contact with it. This is important
to prevent possible personal injury or fire hazard.
The FTF-13 chimney's fire stop spacer and roof flashing (not
chase flashings) may be placed directly on or
against normal construction materials.
Note: "Normal construction materials" are considered to be: framing
materials, particle board, mill board, plywood, paneling, flooring, and
drywall.
Chimney Height Requirements:
The minimum recommended installed height of the com-
pleted fireplace system is fourteen feet (14' 0"). The minimum
recommended installed height of the completed fireplace system that
includes one offset chimney section is seventeen feet (17' 0").
66
w FTF-13 or Equivalent Chimney System (cont.)
Installation of the FTF-13 Metal Chimney System for the Fire-
Lite:
Transition from the Fire-Lite to the FTF-13 Metal
Chimney System:
The FTF-13 metal flue attaches to the smoke dome's
top plate by use of the AP -ISO masonry anchor plate. The Anchor
Plate is fitted with an octagonal base plate to affix it to the smoke
dome's top plate. The anchor plate also has starter rings for both
the inner and the outer sleeves of the metal flue (Figure 137).
Step 1. Attach the AP -ISO anchor plate to the top plate of the
Fire-Lite by first laying a twenty-four inch (24") square, half inch
1/2") thick (minimum) piece of ceramic fiber high temperature
blanket ("Inswool" Ceramic Fiber HP Blanket, rated for tempera-
tures up to 2400 degrees F., by Harbison -Walker Refractories Co.
600 Grant Street, Pittsburgh, PA 15219, or equal.) on the top of the
top plate.
Cut a hole approximately 11" in diameter in the center
of the high temperature blanket and align the blanket on the flue
hole in the top plate (Figure 136).
Step 2. Fit the AP -ISO Anchor Plate assembly onto the top plate
so that the inner flue sleeve projecting out the bottom of the anchor
plate is inserted through the high temperature blanket and into the
hole in the top plate. The high temperature blanket is held between
the anchor plate and the top plate as a gasket (Figure 137).
Attach Anchor Plate to the top plate with masonry attachment
screws through holes provided in the anchor plate into the top
plate. Do not over torque masonry screws into the Fire-Lite mate-
rial.
Chimney Terminations:
FTF-13 chimney pipe requires a termination component
to be installed at or near the top of the chimney chase flashing
Figure 138).
The FTF-I3-CTD Round Termination is the recommend-
ed termination.
Installation:
Step 1. Hold the FTF 13-CTD over top of last chimney section.
Step 2. Center inner slip section in inner flue pipe and slip down.
Step 3. Center.outer locking section over outer flue pipe.
Push down until locking tabs are firmly engaged.
Step 4. Pull up slightly on CTD to ensure locking joint has firmly
engaged.
Note: It is recommended that all exterior exposed metal chimney
components - such as terminations, flashings, and flue - be painted
with a premium quality, high temperature, rust preventative paint
designed for metal. This is especially important when installations
are made in abnormally adverse or corrosive environments such as
near lakes and oceans or, in areas with consistently high humid-
ity conditions. Consult the paint manufacturer's instructions for
proper preparation and application.
Ten Foot Rule Summary:
Refer to page 54 of this manual.
FIGURE Isis
FIGURE 13G
FTF-12
Top Plate
FIGURE 137
FTF-13
AP -ISO
Inswool
Blanket
Inswool
Blanket
67
FTF-13 Installation Components
O
Round Termination
FireStop Spacer (30°)
FireStop Spacer
Offset/Return
Package (30°)
Chimney Section
Stabilizer
EEO
Locking Band
Combination Offset
Return Elbow
Anchor Plate
68
Summary
1. WARNING
Fire-Lite fireplace and Class "A" metal chimney sys-
tems will only draught properly when they are installed accord-
ing to the instructions, in an appropriate location and with the
proper chimney height. Installing the fireplace according to the
instructions, choosing an appropriate location, and choosing an
appropriate chimney
height are the responsibility of the designer and the building
contractor.
Tightly insulated and sealed homes, two story interior
spaces and high vaulted ceilings can cause negative air pressures
within the house which can impair drafting performance. HVAC.
return air ducts near the fireplace opening will adversely affect
the fireplace drafting performance.
It is the responsibility of the designer, the building
contractor and their mechanical contractor to determine that the
building's internal air pressures are conducive to positive fire-
place drafting.
Avoid placing any fireplace in an area near tall trees, tall
buildings, or high land masses. These structures can reduce am-
bient air flow pressure as well as produce down draughts, either
of which can impair fireplace drafting performance.
Earthcore Industries L.L.C. does not warrant drafting
and is not responsible for it.
2. Magnum Fireplace and Fire-Lite Fireplace Curing
Instructions:
It is critical that the Isokern masonry elements in the
Fire-Lite firebox and smoke dome assembly be dry before fir-
ing of the unit. Moisture left in the Fire-Lite components from
exposure during storage and shipping, as well as moisture from
the installation phase, must be eliminated before the unit is put to
its intended use.
The first step in reducing the ambient moisture is to be
sure that the completed Fire-Lite fireplace rest totally in a dried -
in setting for a minimum of 28 days after construction of the unit
is complete.
The next step in curing the Fire-Lite fireplace is to be
sure that the first five or six fires are of short duration.
The first fire of the unit can take place once the mini-
mum twenty-eight day drying period has passed. This fire should
be especially short.
Start the first fire slowly with a small amount of paper
and kindling (small dry wood splits or twigs) and a maximum
load of four to six pounds of dry firewood, estimated to be no
more than two or three logs each of about three inches (3") to
four inches (4") diameter.
The first fire should burn for no more than thirty to sixty
minutes and then allowed to go out. Do not refuel the fireplace
during the first lighting.
A cooling off period of twenty-four hours, at a mini-
mum, should follow the first fire.
The second fire should be the same as the first fire.
The second fire should burn for no more than thirty to
sixty minutes and allowed to go out. Do not refuel the fireplace
during the second lighting.
A twenty-four hour cooling off period must be
observed following second lighting.
After first and second fire, continue use of the unit with three
or four small fires of short duration (sixty minutes or so) and
small fuel load.
After these first five or six small fires of short dura-
tion normal use of the fireplace can proceed. For normal use
the maximum recommended fuel load is twelve to sixteen
pounds of dry firewood at a time. This fuel load is consid-
ered to be approximately three to five cured hardwood logs
of about three inches (3") to six inches (6") in diameter. As
the fire burns down, refueling should be only one or two logs
added at a time.
Important: Do not burn construction debris or trash of any
kind in the Fire-Lite fireplace.
Whereas it is not uncommon for construction debris
and refuse to be burned in a fireplace by site personnel on
a project that is under construction, this activity must be
avoided.
It is the responsibility of the building contractor
to insure that the required dry -in period is met and that the
required lighting sequence is performed by the owner or by
the owner's agent.
3. Log grates are required for burning solid fuel in the
Isokern fireplace. Grates allow for easy air flow up through
the burning logs thus creating a more complete and efficient
burning of the fuel.
4. How to Build a Fire:
First set the fireplace damper in the full open posi-
tion. Begin laying the fire by placing several pieces of wad-
ded up paper directly on the log grate. Place kindling (small
splits of dry pine or other dry softwood) on top of the paper,
enough to loosely cover the paper. Next arrange several
small, dry hardwood or softwood logs or log splits on top of
the kindling layer.
Finally, arrange two or three larger hardwood logs
oak, hickory, etc.) or log splits on top of the stack.
Ignite the paper at the bottom of the stack. The burning
paper will ignite the kindling which will, in turn, set the
remaining fuel on fire.
Be sure to stack all firewood in such a way that it
will settle into the log grate as the paper and kindling layers
are, burned away. Additional logs can be set onto the fire as
each fueling burns down.
Ideally, fuel logs should be of a hardwood species
that have been air dried for one year or longer. Use of cured
or uncured pine logs and uncured hardwood logs for fuel
should be avoided. Pine logs and uncured hardwood logs
will tend to smolder and burn at relatively low temperatures
producing high levels of soot and creosote.
Important: Do not throw, toss, jam, kick or otherwise force
logs into the Standard fireplace.
69
J Summary
WARNING
Never use gasoline, gasoline type lantern fuel, kero-
sene, charcoal lighter fluid or other similar liquids to start or
freshen up" the fire in this fireplace or in any fireplace.
WARNING:
If processed solid fuel firelogs are used: Do not poke
or stir the logs while they are burning. Use only firelogs that
have been evaluated for the application in fireplace and refer
to firelog warnings and caution markings on packaging prior
to use.
5. Avoid over -firing this fireplace. Some examples of over -
firing are:
a. Burning of scrap lumber, construction debris, pine branches
and brush or cardboard boxes;
b. Burning small diameter twigs, branches or any
other small sized combustible materials in quantities which
exceed the volume of the normal log fire;
c. Use of artificial wax base logs, trash or other chemicals or
chemically treated combustibles.
WARNING: Over -firing can permanently damage this
fireplace system.
6. Fireplace Doors and Screens:
This fireplace has not been tested for use with doors.
To reduce the risk of fire or injury, do not install doors. If
doors are required by the local authority having jurisdiction
then doors must be kept in the fully open position when the
fireplace is in operation. Isokern does not limit the use of
fireplace screens.
7. Disposal of Ashes:
It is recommended that the firebox be cleaned of ex-
cessive ashes before each use. It is necessary to remove ashes
from the open front of the fireplace. To do so, proceed in the
following manner:
Allow the fire to go out and the ashes to cool for at
least six to eight hours.
After the cooling period carefully pick up the ashes
from the firebox with a small, metal fireplace shovel or other
metal scoop and place them in a metal container with a tight
fitting lid.
If possible do not sweep the ashes as this will stir
them into the air and disperse them into the room.
The closed container of ashes should be placed on
a noncombustible floor or on the ground, well away from all
combustible materials, pending final disposal. If the ashes are
disposed of by burial in soil or otherwise locally dispersed,
they should be retained in the closed container until all cin-
ders have thoroughly cooled.
8. Inspection and Cleaning:
At least twice a year in warm climates or monthly
during the heating season in colder climates, thoroughly
inspect the Fire-Lite fireplace and chimney system. Chimneys
must be installed so that access is provided for inspection and
cleaning. The chimney should be inspected monthly during
the heating season.
Inspect the entire flue from the top down for obstruc-
tions such as birds' nests, leaves, etc. Such obstructions must
be removed.
Check spark arrestor screens for clear flow of smoke
every two to four weeks during the heating season.
Inspect the flue periodically during the heating season for the
presence of soot and creosote build up. If creosote or soot
has accumulated, it should be removed to reduce the risk of
chimney fire.
Have your chimney cleaned by a professional chim-
ney sweep if you have doubts about your ability to do it.
Use a plastic, wood or steel brush to clean the chimney.
Scrub the spark arrestor/chimney cap with a wire brush.
Remove any chimney cap for flue cleaning from the
top. Open the damper in the firebox for cleaning access from
below.
Clean the inner portion of the flue by using a flexible
handled chimney cleaning brush.
For straight run flue the proper size brush can be
pulled up through the flue from the firebox with the damper
open.
If the chimney has an offset chimney section, brush
cleaning from the chimney top down to the offset/return and
then from the firebox up to the offset section is the proper
method.
In either case, cover the fireplace opening with a
damp sheet (sealed to the opening with masking tape) before
brush cleaning. Do not remove sheet until the soot has settled.
It is advised to vacuum loosened soot. Do not sweep loosened
soot as sweeping will disperse soot into the air and about the
room.
IWARNING:1 Do not use chemical fireplace and chimney
cleaners that are poured on a hot fire. These can be dangerous
and generally work only on the flue section nearest the
fire, leaving the rest of the flue unaffected.
9. Exterior Maintenance:
Annually, at a minimum, check all metal flashings
and weather seals around the exterior chimney where it
penetrates the roof surface; inspect any chimney top spark
arrestors, metal cowlings and weather hoods to make sure they
are secure and weather tight.
Seal any cracks or gaps in chimney -to -roof flashings
to prevent possible roof and chimney chase leaks.
Inspect any cement chimney cap or clay chimney pot
terminations to make sure they are not diverting water into the
structure. Seal any suspected cracks or gaps in these masonry
components.
70
Notes
71
ttrrttxt c i rlttimPr
ISOKERN FIREPLACE
ISOKERN.offers a lifetime warranty for all Isokern components, to be free from defects in materials that
negatively affect system performance from the date of purchase, subject to the terms and conditions of this limited
warranty..
This warranty covers only the above stated components, and NO WARRANTY, EXPRESS OR IMPLIED,
EXTENDS TO ANY OF THE HARDWARE, FOOTING, VENTS, DUCTING, METAL FLUES, FIRE BRICK
OR ACCESSORIES. THIS WARRANTY DOES NOT COVER DRAFTING, SMOKING OR PUFFING OF THE
FIREPLACE' SYSTEM. Factors beyond the manufacturer's control affect fireplace drafting,
smoking, and puffing, and ISOKERN cannot guarantee these aspects of performance.
If a.component is found to be defective under the terms of this warranty the party to whom this warranty is
extended'shall, notify. ISOKERN, 6899 Philips Industrial Blvd, Jacksonville, Florida 32256, in writing, by
registered mail, within thirty (30) days following the discovery of the defect within the lifetime warranty period.
The notice shall contain (1) the date of purchase; (2) place of purchase; (3) address of installation; (4) name, ad-
dress and phone number of the owner; and (5) a brief description of the defect.
ISOKERN, or any division thereof, is not responsible for any labor costs or indirect costs incurred for the
replacement of defective components.
ISOKERN is not responsible for misuse or mishandling of components. Nothing in this warranty makes
ISOKERN, or any division thereof, liable in any respect for any injury or damage to the building or structure in
which the fireplace or chimney system has been installed or to persons or property therein arising out of the use,
misuse, or installation of properly manufactured ISOKERN product.
ISOKERN, OR ANY DIVISION THEREOF, SHALL NOT BE HELD LIABLE FOR ANY INCIDENTAL
OR,CONSEQUENTIAL-DAMAGES OR EXPENSES ARISING OUT OF THE USE OF THE
FIREPLACES OR CHIMNEY SYSTEMS. ALL SUCH DAMAGES AND EXPENSES ARE HEREBY
EXCLUDED.
This warranty is null and void when the fireplace or chimney systems are not installed pursuant to the
installation instructions provided by ISOKERN or local building codes have not been followed completely.
This warranty applies only to those fireplace and chimney systems installed in the continental United States,
Alaska,. and Canada. If any part of this warranty is found to be unenforceable, the remaining parts shall remain in
force and effect.
ISOKERN HEREBY DISCLAIMS ALL GUARANTEES AND WARRANTIES, EXPRESS OR IMPLIED, BE-
YOND THE WARRANTIES SET FORTH HEREIN,
ea rthcore
INDUSTRIES, L.L.C. .
6899 PHILIPS INDUSTRIAL BLVD. • JACKSONVILLE, FLORIDA 32256
TEL (904) 363-3417 • TOLL 1 (800) 642-2920 • FAX (904) 363-3408