Isokern STANDARD 80S36 User manual

Isokern®STANDARD®Fireplace
with Fire-Lite Application
and DM Chimney System
Installation, Operation, Maintenance and Owner’s Manual
STANDARD Models 80S36, 80S42 & 80S46
A PRODUCT OF EARTHCORE INDUSTRIES, LLC.
INSTALLER: Leave this manual with the fireplace
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.
Issued: September 2018
Revision: 003
©2018 Earthcore Industries, LLC
Listing Services Report NO. 3159656MID-008 & 3082504-T1
THESE FIREPLACES ARE DESIGNED for USE with:
Solid Wood Logs, PROPANE (LP) or NATURAL GAS (NG), ONLY
THIS MANUAL CAN ONLY BE REPRODUCED IN ITS ENTIRETY
DO NOT install the STANDARD Series Fireplace in a
manufactured home or mobile home or recreational
vehicle.
SBCCI NO. 9626
NYC-MEA 241-90-E
ICC Report NO. ESR-2316
LA RR NO. 25483
IBC 2006, IRC 2006, IMC 2006
IMPORTANT: This manual contains assembly rules, installation steps, guidelines, use and maintenance in-
structions for the STANDARD 80S36, 80S42 & 80S46 fireplaces and the DM chimney system , and Fire-Lite
Application with the ECO-STEEL & ECOSTEEL + 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 that any allowed
gas log appliance 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.
CLICK ANYWHERE on THIS PAGE to RETURN to CHIMNEY
HEIGHT & CLEARANCE CODE at InspectApedia.com

General Information................................................. 3 - 4
Safety Instructions................................................... 5 - 6
Warnock-Hersey Listing Label ...................................... 7
STANDARD 36 - Firebox Dimensions .......................... 8
Component List - STANDARD 36 ................................. 9
STANDARD 42 - Firebox Dimensions .........................10
Component List - STANDARD 42 ................................11
STANDARD 46 - Firebox Dimensions .........................12
Component List - STANDARD 46 ................................13
Required Clearance to Combustibles ...................14 - 15
Supporting Floor System .............................................16
Fire-Lite Application ..............................................17 - 19
Rough Framing Dimensions ....................................... 20
General Assembly Instructions ........................... 21 - 25
DM Chimney Components & General Information..... 26
DM Chimney Height Requirements ........................... 27
DM Chimney Installation - Straight Run .............. 28 - 29
DM Chimney Installation - Offset Run................. 30 - 32
DM Brick Ledge................................................... 33 - 35
DM Chimney Terminations ......................................... 36
Metal Chimney Flue ................................................... 37
2
Earthcore Industries
STANDARD Series Fireplace
Table of Contents
Component List - ECO-STEEL Chimney ..................... 38
Component List - ECO-STEEL+ Chimney............ 39 - 40
ECO-STEEL & ECO-STEEL+ General Information ...... 41
ECO-STEEL Metal Chimney Installation .............. 42 - 46
Mechanical Draft System ........................................... 47
Access Modification:
Combustion Air Kits, Gas & Electrical Line Feed ........ 48
Firebrick Installation.................................................... 49
Flush Wall Finish Details............................................. 50
Clearance to Combustilble Trim .................................. 51
Outdoor Application.................................................... 52
Two Story Stacked Installations........................... 53 - 54
Custom Cut See Thru Application and
Seismic Requirements ............................................... 55
Summary ............................................................. 56 - 58
Registration Card ........................................................ 59
Warranty ..................................................................... 60

3
The STANDARD Series fireplace and DM chimney
system is a prefabricated, refractory modular fireplace
and chimney system designed for field assembly. The
system consists of interlocking precast parts which are
adhered versus glued together with a masonry adhesive.
The parts of the STANDARD Series fireplace and DM
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 STANDARD 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. However, metal flue pipe, eletronic or chimney
top dampers are options.
The STANDARD Series fireplaces is available in 3
sizes: 36, 42 & 46.
The STANDARD Series fireplace requires a standard
refractory firebrick liner be applied to the interior of the
firebox. In the 36, 42 & 46 models the firebrick must be a
minimum thickness of 1-1/8” on the side walls, floor and
back wall.
All units have a (32”) rough opening height before
firebrick. The only parts which differ among the available
sizes are width related pieces. All units use the same
side wall pieces.
The DM chimney system is a dual module refractory
chimney system. The basic chimney consists of an outer
casing block and an inner liner. It is acceptable to use
mechanical assist draft systems, if the venting companies
perform 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.
“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. The DM chimney components
are field assembled using Earthcore Adhesive to glue the
components together.
The DM chimney system also includes an offset
chimney block component, used to create offsets to the
vertical run of the chimney. A brick ledge component is
available, designed to support chimney top brick veneer
finishes. Prefabricated masonry chimney termination
caps are also available.
Earthcore Industries
STANDARD Series Fireplace
General Information
The STANDARD Series fireplace and DM chimney
components will be described and illustrated in the
following pages. Close attention should be paid to
each component group’s specifications and installation
requirements as described in this manual.
Recommended minimum overall height for the
Isokern fireplace, DM, ECO-STEEL & ECO-STEEL +
chimney system for an indoor application is 18’-0” when
the chimney is straight and 21’-0” when a chimney is
offset.
Maximum DM54 Chimney height without additional
support needed: 57' - 0"
Overall DM54 Chimney height, with proper structral
support, should not exceed: 82' - 0"
Intended Product Use Statement:
The STANDARD Series fireplace and DM 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 Fireplaces, ANSI Z21.60.
This fireplace is intended for use as a supplemental
heat source only and is not intended for heavy use as a
primary heating system.
Over-firing, 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).
The STANDARD Series fireplaces and DM chimney
systems are conventional indoor or outdoor fireplaces
designed to appear like traditional masonry fireplaces.
The STANDARD Series fireplace and DM chimney
system units are intended for installation in residential
homes and other buildings of conventional construction.
NOTE: The local authority having code jurisdiction should
be consulted before installation to determine the need to
obtain a permit.

4
Earthcore Industries
STANDARD Series Fireplace
General Information
Important areas of concern with the installation of
these fireplaces are: construction of proper load bearing
foundation and concrete support slab; code required
hearth extension 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 prevailing 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 prevailing local building code.
Isokern is not responsible for other construction
work around the fireplace unit.
We recommend (1) 4" outside air kit for Standard
36, 42 & 46. The STANDARD Series fireplace and DM
chimney system is tested and listed by Warnock Hersey
(Intertek Testing Service) - Report No. 3159656MID-008
& 3082504-T1 to UL 127, and UL 103HT.
STANDARD Series 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).
IMPORTANT: The top plate of the firebox is not meant to
be used as a structural support. Please consult structural
engineer for structural support of any veneer bearing
weight on the Isokern top plate.
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.
SEISMIC CODE:
If you are installing the STANDARD Series Fireplace in
a location where there is seismic code follow these
instructions for installation:
Four No. 4 ASTM A615 Grade 40 minimum, vertical
reinforcing bars, 2 on the inside of each sidewall
cavity running from approximately 4 inches into the
concrete slab (for anchorage) to the top of the side
wall cavity and fill with 2000psi minimum concrete or
grout. Also see page 55 for more information.
For seismic anchorage design and instructions of
the flush hearth application, please contact the
Technical Department at 1-800-642-2920.

5
WARNING: This product contains or generates
chemicals known to the state of California to cause
cancer or birth defects or other reproductive harm.
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate or
service this fireplace. Improper use of this fireplace
can cause serious injury or death from fire, burns,
explosions and carbon monoxide poisoning.
DANGER: CARBON MONOXIDE POISONING MAY
LEAD TO DEATH!
If gas application is used with STANDARD Series
fireplace; Propane (LP) gas and natural gas (NG) are both
colorless and odorless gases. An odor-making agent is
added to each of these gases to help you detect a gas
leak. However, the odor added to these gases can fade
and gas may be present even though no odor exists.
Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble flu symptoms, including
headaches, dizziness or nausea. If you have these signs
the fireplace may not have been installed properly, get
fresh air at once! Have the fireplace inspected and
serviced by a qualified service person or your gas supplier.
Some people are more affected by carbon monoxide
than others.These include pregnant women, people with
heart or lung diseases or anemia, people at high altitude
or under the influence of alcohol. Earthcore Industries
strongly recommends the use of a carbon monoxide
detector/alarm device wherever gas fired appliances are
in use.
All parties either involved in or associated with the
installation, service and use of this fireplace must read
this entire manual. Keep this manual for reference and as
a guide book to safe operation of this fireplace.
1. Always check local building codes governing fireplaces
and fireplace installations. The STANDARD Series
fireplace and DM chimney installation must comply
with all local, regional, state and national codes and
regulations.
2. The STANDARD Series fireplace and DM chimney
systems are intended 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.
3. 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.
Earthcore Industries
STANDARD Series Fireplace
Safety Instructions
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 periodically 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 periodically throughout
the heating season.
4. Before servicing, allow the fireplace to cool. Always
shut off any electricity or gas to the fireplace while
working on it.
5. Use only solid fuel or Natural Gas or LP Gas log sets in
this unit. Do not use artificial wax based logs, chemical
chimney cleaners or flame colorants in this fireplace.
6. For propane (LP) use do not place propane supply
tank(s) inside any structure. Locate propane supply
tank(s) outdoors. To prevent performance problems, do
not use propane fuel tank of less than 100 lbs. capacity.
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
specified for use with the STANDARD Series fireplace
and DM chimney systems unless written authorization
is given by Earthcore Industries, LLC. Failure to heed
this warning may cause a fire hazard and will void the
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 combustion air
supply kits may not provide all the air required to support
combustion and the proper flow of combustion gases up

the chimney.
The manufacturer is not responsible for any smoking
or related problems that may result from the lack of
adequate air supply flowing into the house. It is the
responsibility of the builder/contractor to ensure that
adequate air supply has been provided for the fireplace.
CAUTION: When used with the STANDARD Series
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.
12. When in doubt about a component’s usability - has
visible or suspected physical damage - consult your
Isokern distributor or authorized Isokern representative
for advice.
13. Modification to STANDARD components not
mentioned in this manual may void claims, listings and
approvals and could result in an unsafe and potentially
dangerous installation.
Alterations to the STANDARD firebox are allowed
with prior written approval and instructions from
Earthcore Industries, LLC. The installer indemnifies the
manufacturer of all claims and under no circumstances
will the manufacturer be liable for consequential,
incidental, indirect, punitive or other damages of any
kind or nature, whether foreseeable or not, based on any
claim by any party as to the modifications of the Isokern
fireplaces.
14. Keep all insulation, vapor barriers, “house wrap”
paper and other insulating type membranes and products,
including fiberglass, cellulose and other insulation,
(anything that carries an “R” rating) a minimum of three
inches (3”) away from all firebox and chimney surfaces.
EXCEPTION: If insulation is used in walls surrounding the
fireplace, insulation may be installed behind sheathing of
gypsum board, plywood, particle board or other material
on the side facing the Isokern. The facing material cannot
be within 1 1/2” to the sidewalls and backwalls of the
fireplace.
WARNING: Do not pack required air spaces with
insulation or other materials.
15. Never leave children unattended when there is a fire
burning in the fireplace.
16.Burning some fuels (such as charcoal) can be hazardous
due to the possibility of producing carbon monoxide, a
colorless, odorless gas. Early signs of carbon monoxide
6
Earthcore Industries
STANDARD Series Fireplace
Safety Instructions
poisoning resemble flu symptoms, including headaches,
dizziness or nausea. Overexposure 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 installed.
1 7. Young children should be carefully supervised when
they are in the same room as the appliance. Toddlers,
young children and others may be susceptible to accidental
contact burns. A physical barrier is recommended if there
are at-risk individuals in the house. To restrict access to
the fireplace, install a adjustable safety gate to keep
toddlers, young children and other at-risk individuals out
of the room and away from hot surfaces.
18. Clothing or flammable material should not be placed
on or near the fireplace.
19. Due to high temperatures, the fireplace should
be located out of traffic and away from furniture and
draperies.
20. If glass doors are installed with the fireplace Do NOT
clean glass front when hot or in use. Wait until Fireplace
is OFF and has cooled to room temperature before
cleaning glass. Do not use abrasive cleaners on the glass.
21. Do not nail or screw into the Isokern fireplace,
which includes firebox, smoke dome and DM
Chimney components unless attaching the anchor
plate for the metal flue system. This may alter the
integrity of the fireplace and cause a house fire. This
will VOID the warranty of the fireplace.
22. Never spray or apply any type of sealer, insulation or
other materials to the fireplace.

7
Earthcore Industries
STANDARD Series Fireplace
Warnock Hersey Listing Label
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 listed 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 those shown above is affixed to each fireplace. Do not remove the listing label from the
fireplace.
Prior to beginning installation, contact your local building official to determine the need to obtain a permit.
Warnock Hersey Listing Label
- Facsimile -
8
Isokern Fireplace and Chimney Systems are tested and listed to UL standards: UL 127, ULC S610, and UL 103HT.
The listing labels shown in Figures 1 and 2 above outline the listed clearances to combustibles and indicates that the units are
suitable for use with solid fuel or listed gas appliances. Refer to the manufacturer’s installation manual for detailed description of
clearances to combustibles and all other installation information.
$PHWDOOLVWLQJODEHOVLPLODUWRWKRVHVKRZQDERYHLVDI¿[HGWRHDFK¿UHSODFH'RQRWUHPRYHWKHOLVWLQJODEHOIURPWKH¿UHSODFH
3ULRUWREHJLQQLQJLQVWDOODWLRQFRQWDFW\RXUORFDOEXLOGLQJRI¿FLDOWRGHWHUPLQHWKHQHHGWRREWDLQDSHUPLW
FIGURE 2 - MAGNUM SERIES
FIGURE 1 - ISOKERN STANDARD SERIES

8
Earthcore Industries
STANDARD Series Fireplace
STANDARD 36 (80S36)
Front View Side View
Plan View Top View
10 ¾”
25 ¼”
13”
33”
Flue Outlet
Uses Isokern DM 54 Chimney
or ECO-STEEL/ ECO-STEEL+
Metal Chimney Pipe.
NOTE: These
are inside rough
dimensions
before firebrick
CAUTION: When using the Isokern brick
ledge it is required that the firebox/smoke
dome assembly include the placement of
a 4" by 4" by 3/8" minimum steel angle
across the firebox opening. (See page 33-
35 for "Structural Information" for details
regarding specification and placement of
steel angles in fireplaces.)
13.5"
25 ¼”
43”
27 ¼”
37 1⁄8”
33”
63 ¼”
31 ½”
43”
27 ¼”
37 1⁄8”
10 ½”
31 ½”
25 ¼”
63 ¼”
28 ¾”
34 ½”
5”
16”
8”
33” Damper

9
Earthcore Industries
STANDARD Series Fireplace
Component List - STANDARD 36 (80S36)
Component Part# Description
25 ¼”
43”
21 Isokern STANDARD
Base Plate
3”
25¼”
16” 34 Isokern STANDARD
Side Sloping (Qty. 2)
25 ¼” 8”
10½”
2 7/8”
20 Isokern STANDARD
Sidewall (Qty. 6)
Component Part# Description
95L & 95R Isokern STANDARD
Damper End Left & Right
16”
4”
43”
11 Isokern STANDARD
Smoke Dome (QTY. 2)
33” 4 3/4”
25 1/4” 10 3/4”
M77 Isokern STANDARD
Top Plate
43”
8”
7 7/8”
M68 Isokern STANDARD
Damper Support, Front/Back (Qty. 2)
25 Isokern STANDARD
Backwall (Qty. 4)
29 ¾”
10 ½”

10
Earthcore Industries
STANDARD Series Fireplace
STANDARD 42 (80S42)
33”
63 ¼”
31 ½”
49”
33 ¼”
3”
43 1⁄8” 31 ½”
25 ¼”
63 ¼”
28 ¾”
34 ½”
5”
16”
8”
25 ¼”
49”
33 ¼”
43 1⁄8”
Front View Side View
Plan View Top View
10 ¾”
25 ¼”
13”
33”
Flue Outlet
Uses Isokern DM 54 Chimney or
ECO-STEEL/ ECO-STEEL+ Metal
Chimney Pipe.
NOTE: These
are inside rough
dimensions
before firebrick
CAUTION: When using the Isokern brick ledge
it is required that the firebox/smoke dome
assembly include the placemaent of a 4" by
4" by 3/8" minimum steel angle across the
firebox opening. (See page 33-35 for "Structural
Information" for details regarding specification
and placement of steel angles in fireplaces.)
13.5"

11
Earthcore Industries
STANDARD Series Fireplace
Component List - STANDARD 42 (80S42)
Component Part# Description
25¼”
49”
22 Isokern STANDARD
Base Plate
3”
25¼”
16” 34 Isokern STANDARD
Side Sloping (Qty. 2)
25¼” 8”
10½”
2 7/8”
20 Isokern STANDARD
Sidewall (Qty. 6)
Component Part# Description
95L & 95R Isokern STANDARD
Damper End Left & Right
16”
4”
43”
11 Isokern STANDARD
Smoke Dome (QTY. 2)
33” 4 3/4”
25 1/4” 10 3/4”
M77 Isokern STANDARD
Top Plate
49”
8”
7 7/8”
M69 Isokern STANDARD
Damper Support, Front/Back (Qty. 2)
28 Isokern STANDARD
Backwall (Qty. 3)
35 ½”
9.5”

12
Earthcore Industries
STANDARD Series Fireplace
STANDARD 46 (80S46)
43”
63 ¼”
31 ½”
53”
37 ¼”
47 1⁄8” 31 ½”
25 ¼”
63 ¼”
28 ¾”
34 ½”
5”
16”
8”
42” Damper
25 ¼”
53”
37 ¼”
47 1⁄8”
Front View Side View
Plan View Top View
43”
10 ¾”
25 ¼”
13”
Flue Outlet
Uses Isokern DM 54 Chimney or
ECO-STEEL/ ECO-STEEL+ Metal
Chimney Pipe.
NOTE: These
are inside rough
dimensions
before firebrick
CAUTION: When using the Isokern brick
ledge it is required that the firebox/smoke
dome assembly include the placemaent
of a 4" by 4" by 3/8" minimum steel
angle across the firebox opening. (See
page 33-35 for "Structural Information"
for details regarding specification and
placement of steel angles in fireplaces.)
13.5"

13
Earthcore Industries
STANDARD Series Fireplace
Component List - STANDARD 46 (80S46)
Component Part# Description
28”
53”
23 Isokern STANDARD
Base Plate
3”
25¼”
16” 34 Isokern STANDARD
Side Sloping (Qty. 2)
20 Isokern STANDARD
Sidewall (Qty. 6)
Component Part# Description
95L & 95R Isokern STANDARD
Damper End Left & Right
16”
4”
53”
13 Isokern STANDARD
Smoke Dome (QTY. 2)
43” 4 3/4”
25 1/4” 10 3/4”
M81 Isokern STANDARD
Top Plate
53”
8”
7 7/8”
M70 Isokern STANDARD
Damper Support, Front/Back (Qty. 2)
31 Isokern STANDARD
Backwall (Qty. 3)
40”
10½”
25¼” 8”
10½”
2 7/8”

14
Earthcore Industries
STANDARD Series Fireplace
Required Clearance to Combustibles
The STANDARD Series fireplace and the DM
chimney system is tested and listed for installation with
“clearance to combustibles” as follows:
All DM 54 chimney components require 0” clearance.
(Figure 1)
The STANDARD Series firebox side walls and back
wall require 1 1/2” clearance. (Figure 2)
The smoke dome front wall requires 0” clearance.
NOTE: “Combustibles” are defined as “normal
construction materials” and are considered to be: wood
framing materials, particle board, mill board, plywood
sub-flooring, plywood paneling and wood flooring.
STANDARD Series fireplaces are tested and listed
for (1 1/2”) clearance to combustible framing 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 requirements (as determined through testing
and as stated by the manufacturer) are not maintained
due to construction subsequent to the installation of the
Isokern unit. It is the general contractor’s responsibility to
assure that listed clearances to combustible framing 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 2 & 3)
Keep all insulation, vapor barriers, “house wrap”
paper and other insulating type membranes and products,
including fiberglass, cellulose and other insulation,
(anything that carries an “R” rating) a minimum of three
inches (3”) away from all firebox and chimney surfaces.
IMPORTANT: 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 this
installation manual.
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:
Models 36, 42 & 46:
• Sides: 8" away
• Top of opening: 8" away
Drywall must be cut back from the firebox opening sides
and above the top of the opening according to information
above.
FIGURE 1
FIGURE 2
COMBUSTIBLE
FRAMING
8”
MIN
1 ½”
Min.
1 ½”
Min.
1 ½”
Min.
8" = 36, 42, 46
0” CLEARANCE

15
EXCEPTION: If insulation is used in walls surrounding the
fireplace, insulation may be installed behind sheathing of
gypsum board, plywood, particle board or other material
on the side facing the Isokern. The facing material cannot
be within 1 1/2” to the fireplace sidewalls.
The STANDARD Series fireplace must sit upon a
concrete support slab designed to bear the total installed
weight of the fireplace and DM chimney system. These
support slabs can have no wood underpinnings. (Figure
3) See page 18 for more information on weight loads.
Concrete support slabs for STANDARD Series
fireplaces must provide the non-combustible hearth
extension substrate needed to support the code required
non-combustible hearth extension finish materials.
(Figures 4)
All STANDARD Series fireplaces shall have hearth
extensions of approved non-combustible 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 must be removed when the
construction is complete.
If a raised fireplace floor and raised hearth extension
are preferred, the raised underlying structure must
be built of non-combustible material, be structurally
designed to hold the weight of the fireplace and chimney
system and must sit on non-combustible substrate.
Earthcore Industries
STANDARD Series Fireplace
Required Clearance to Combustibles
FIGURE 3
FIGURE 4
20” 1 1/2”
0” CLEARANCE
1 1/2”
0” CLEARANCE
Combustible material
cannot be within 1 1/2”
to the fireplace sidewalls.

16
Earthcore Industries
STANDARD Series Fireplace
Supporting Floor System
The STANDARD 36, 42, and 46 Fireplaces are not rated
for installation on a combustible floor system unless used
in the Fire-Lite Application. (See Page 17-19) Fireplaces
must be built upon a concrete support slab with no wood
underpinnings. Proper reinforced concrete support slab for
fireplace installations may include the following types:
1. Slab on grade: standard residential, minimum four
inch (4”) thick, 2500 psi concrete foundation on properly
compacted fill. This type foundation can support Isokern
installations up to thirty feet (30’)* overall height without
additional structural support. (brick ledge installations not
included) (Figure 5)
* Minimum height. See page 3 for specific models.
2. Slab-on-grade foundations, thickened and reinforced: for
additional load carrying. (Figure 6)
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. When
building off-grade support slabs the code required hearth
extension substrate should be built as a continuation of the
support slab for the fireplace unit. (Figure 7). Supports for
off grade slabs must be concrete or steel and capable 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 a 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
a local structural engineer. It is the responsibility of the
General Contractor to insure adequate foundations.
Fireplace weights* and “foot print” areas: The total
fireplace weight and footprint for each model listed below
includes: Fireplace pumice components only:
STANDARD 36: 1300 lbs. @ 43” x 25” = 7.5 sq.ft.
STANDARD 42: 1420 lbs. @ 49” x 25” = 8.5 sq.ft.
STANDARD 46: 1600 lbs. @ 53” x 25” = 9.2 sq.ft.
“Footprint” areas listed above are base plate
dimensions for each model and are exclusive of code
required hearth extension areas. See page 59 for hearth
extension dimensions.
NOTE: Additional support slab area may be required at the
side or back of the STANDARD unit to provide bearing for
structural supports to a DM offset chimney sequence. (See
page 32 - 34 for offset chimney support requirements.)
FIGURE 5
FIGURE 6
FIGURE 7

17
General Information:
The Fire-Lite is an application of the Isokern
STANDARD 36, 42 and 46 fireplaces designed, tested
and listed with the ability to be installed on a combustible
floor system. The design and installation require that the
system use ECO-STEEL or ECO-STEEL+ metal chimney.
The Isokern Fireplaces must sit on the Fire-lite stand using
the applicable Fire-lite kit.
The following pages will refer to installation
requirements specific to the Fire-Lite application using the
Isokern Metal Fire-Lite Stand (Pages 21-25).
Intended Use Statement:
The Fire-Lite Application of the Isokern fireplace
is designed to sit on a combustible floor system and 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.
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
residential homes, and other buildings of conventional
construction.
Fire-Lite Application of the Isokern fireplace 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).
Clearance to Combustibles:
The Fire-Lite is tested and listed for installation with
“clearance to combustibles” as follows:
1. Four inches (4”) clearance to the combustible floor.
2. Zero inch (0”) clearance at the Isokern smoke dome
front wall.
3. One and one half inches (1 1/2”) clearance at the Isokern
firebox back walls and side walls.
4. Two inches (2”) minimum air space to combustibles at
all ECO-STEEL or ECO-STEEL+ metal chimney.
IMPORTANT: “Combustibles” are defined as “normal
construction materials” 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 zero inch (0”) clearance.
gypsum board, plywood, particle board or other
material on the side facing the Isokern. (Figure 8)
IMPORTANT: 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.
Earthcore Industries
STANDARD Series Fireplace
Fire-Lite Application
ISO-WOOL
FIRE-LITE
Stand
ISOKERN
Fireplace
ISO-WOOL
ECO-STEEL
Metal Chimney
FIGURE 8

18
Earthcore Industries
STANDARD Series Fireplace
Fire-Lite Application
All portions of the combustible floor system under the
Fire-Lite stand are to be covered with minimum 1/2” thick
ceramic fiber Isowool or equivalent rated to 2100 degrees
Fahrenheit. (Figure 9)
Use of Insboard cut out underneath the Fire-Lite stand
is still an accepted installation practice. (Figure 9)
All Fire-Lite Application of the Isokern fireplace result
in the finished fire brick floor of the firebox being at least
eight inches (8 1/2”)* above the combustible floor system.
(Figure 9)
The noncombustible raised platform must be set with
a minimum one and one half inch (1 1/2") clearance to the
wall to the sides and directly behind the Fire-Lite assembly.
Raised Platform:
Nominal four inch (4") metal base. (Figure 9) Set the
Fire-Lite base plate in a Earthcore Adhesive on to the non-
combustible raised platform.
IMPORTANT: Metal safety strip - a metal angle is attached
to the Fire-Lite stand when shipped. This angle is to be
removed before installation, turned over and re-attached
to the metal stand so that the 2” lip faces forward of the
metal stands. This creates a metal safety strip and can
be adjusted to ensure your metal stand, set on top of the
Isowool will be level. The safety strip must extend out from
the front of the raised platform at least two inches (2”)
The exposed combustible floor underneath the
noncombustible raised platform must be completely
covered with Isowool ceramic fiber insulation.
(Figure 9) The Isowool is dry laid to the floor within the
block perimeter.
The ceramic fiber must have a thermal conductivity
rating equal to or greater than 0.4 Btu-in/hrsq. ft-degree
Fahrenheit. (Reference: Harbison-Walker, 600 Grant St.,
Pittsburgh, PA 15219, ph. 412-562-6200: “Insboard 2100”
or equivalent.)
Fire Brick Installation: Follow instructions on page 49 of
this manual.
ECO-STEEL
Chimney System
(4” min)
Floor System
ISOWOOL blanket
FIGURE 9

19
Recessed Fire-Lite:
If the design preference is for a flush hearth Fire-Lite
application (floor of the fireplace at the same level the
room’s floor), with advanced planning, the metal stand
can be lowered, set and attached to the joist system.
(Figure 10)
NOTE: For seismic anchorage design and instructions of
the flush hearth application, please contact the Technical
Department at 1-800-642-2920.
When calculating flush hearth height be sure to allow
for the four or eight inch (4” or 8”) metal stand, three inch
(3”) thick base plate plus the one and one half inch (1 1/2”)
thick fire brick floor.
Whether a flush hearth is preferred or a raised hearth,
the combustible floor in front of the fireplace must be
covered with a noncombustible hearth extension set tight
against the fireplace 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.
For all “Fire-Lite” construction, it is necessary to
use the base plate and the metal Fire-Lite stand. Be
sure to secure the Fire-Lite metal stand to the floor
framing system.
NOTE: Field Verified Dimensions Should Make Allowance
for Hearth Extensions in Front (20”) and Sides (12” ea.)
From Fireplace Opeining. Also Fireplace Sides and Rear,
1 1/2” Clearance to Combustibles.
Earthcore Industries
STANDARD Series Fireplace
Fire-Lite Application
Secure Fire-Lite
Stand To Trusses
Floor Framing
By Others
1 1/2”
min
1 1/2”
min
Field Verify Dimensions:
Magnum Series:
28 55 3/4”W x 49 1/2”D
36 58 1/2”W x 49 1/2”D
42 65 1/2”W x 49 1/2”D
48 69 1/2”W x 49 1/2”D
Note: Field Verified Dimensions Should Make Allowance for Hearth
Extensions in Front (20”) and Sides (12” ea.) From Fireplace Opeining.
Also Fireplce Sides and Rear, 1 1/2” Clearance to Combustibles
** Consult Local Structural Engineer for Specific Structural Suppot.
Use Metal Flue Only.
Noncombustible Hearth
Extension Required
20” min
Support Hearth Extension
With Noncombustible Material
Secure Fire-Lite
Stand To Trusses
1 1/2”
min
FIGURE 10
FIGURE 11
Part# Description
MS-S-36
MS-S-42
MS-S-46
STANDARD 36 Fire-lite Kit
(Stand w/ ISOWOOL)
4" x 46" x 25"
STANDARD 42 Fire-lite Kit
(Stand w/ ISOWOOL)
4" x 49" x 25"
STANDARD 46 Fire-lite Kit
(Stand w/ ISOWOOL)
4" x 53" x 25"

Rough Framing Dimensions
Typical Installation Framing Dimensions
STANDARD Width - A Height - B Depth - C
Model 36 46” 63” 26 ¾”
Model 42 52” 63” 26 ¾”
Model 46 56” 63” 26 ¾”
Notes:
1. “B” includes the 3” thick base plate.
2. “Raised hearth” requires additional rough opening
height at “B” equal to the height of the raised hearth
detail.
3. Rough framing dimension for width “A” allows for the
required 1½” clearance at the sides of the Fireplace.
4. Rough framing dimension for depth “C” allows for
the required 1½” clearance at the back of the Fireplace.
26 ¾" is only for an interior wall as most exterior wall
framing have insulation, even if the wall is 2x6, the foam
they spray expands so typically 31" is allowed on an
exterior wall (Figure 12)
FIGURE 12
Corner Installation Framing Dimensions
The following chart of dimensions detail the positioning of
an STANDARD Series fireplace in a corner. It also details
the positioning of DM chimney where it must turn 45°
degrees, if alignment is needed to overhead framing.
(Figure 12 & 13)
STANDARD A B C D
Model 36 46” 23 ½” 32” 69”
Model 42 52” 26 ½” 36” 73”
Model 46 56” 28 ½” 39” 76”
To turn flue 45°, first set starting inner liner onto the
top plate of the fireplace.
Next, set a DM outer casing onto the inner liner so that
the outer casing is at 45° to the firebox and square to the
overhead framing system. Run the vertical DM chimney
through the overhead framing.
Offset blocks can be used, if necessary, to align with
overhead framing before running the vertical DM chimney
outer casing and liner.
NOTE: Support the third offset down to footings and at
each third offset block thereafter.
FIGURE 13
DM
Chimney
Earthcore Industries
STANDARD Series Fireplace
20