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ISOKERN VENT-FREE FIREPLACE

A PRODUCT OF EARTHCORE INDUSTRIES, LLC.

INSTALLATION, OPERATION, MAINTENANCE and

OWNER’S MANUAL

ISOKERN MODELS VF- 36, VF- 42, VF- 46

IMPORTANT: 

This manual contains assembly rules, installation steps and guidelines, use and maintenance 

instructions  for  the  Isokern  Vent-Free  fireplace  system  (Vent-Free  Series).  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 

distributor, general contractor and the installer of this product that the instructions in this manual are followed 

exactly and, further that the allowed gas log appliance used in this product be installed in strict accordance with 

the gas log manufacturer’s listing and explicit installation and operation instructions.

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.

FOR USE ONLY WITH DECORATIVE TYPE

             CERTIFIED VENT-FREE GAS LOG

DO NOT BUILD A WOOD FIRE

Carefully review the instructions supplied with the decorative type unvented

room heater for the minimum firebox size requirement.

DO NOT INSTALL THE APPLIANCE IN THIS

FIREBOX UNLESS THIS FIREBOX MEETS THE

MINIMUM DIMENSIONS REQUIRED FOR THE

INSTALLATION

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  

 

 

 

INTERTEK TESTING SERVICES REPORT NO. 13001A-764

ICC Report NO. ESR-2316    

 

 

 

 

 

 

Revised: May 17, 2011

 

 

 

 

 

 

 

 

 

 

 

Revision 002

                THIS MANUAL CAN ONLY BE REPRODUCED IN ITS ENTIRETY

© 1995-2006 ECI

Summary of Contents for VF-36

Page 1: ...cit installation and operation instructions 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 FOR USE ONLY WITH DECORATIVE TYPE CERTIFIED VENT FREE GAS LOG DO NOT BUILD A WOOD FIRE Carefully review the instructions supplied with the...

Page 2: ...n 11 Specialty Application 12 See Thru 12 Noncombustible Finished Facing Requirements Clearance to Combustible Trim 13 Summary 14 Notes 15 Warranty Note Illustrations shown 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 Howeve...

Page 3: ...on However all such trim material must meet standard fireplace code requirements non combustible facing material must be applied to a minimum of eight inches 8 beyond the sides of the finished opening of the Vent Free fireplace and non combustible facing material must cover a minimum of twelve inches 12 above the finished opening of the installed unit Reference Intertek Testing Services Report No ...

Page 4: ...1 2 3 20 5 A C 25 B Model A B C 36 43 36 1 8 27 1 4 42 49 43 1 8 46 53 47 1 8 33 1 4 37 1 4 37 1 2 43 W x 37 1 2 H x 25 1 4 D 49 W x 37 1 2 H x 25 1 4 D 53 W x 37 1 2 H x 25 1 4 D MINIMUM FRAMING 715 lbs 820 lbs 880 lbs WEIGHT B See Thru Models Side View Front View Plan View 3 31 1 37 1 ...

Page 5: ... Size 36 42 46 Quantity 3 3 3 BASE TOP PLATE Model A 36 43 42 49 46 53 SIDE WALL BACK WALLS Model A 36 43 42 49 46 53 A 10 1 2 2 5 10 1 2 2 5 3 5 Earthcore reserves the right to make changes at any time without notice in design materials and specifications Earthcore further reserves the right to discontinue styles and products Please call 1 800 642 2920 for an Isokern dealer near you ...

Page 6: ...trim Since this weight is spread over an area of seven and one half square feet 7 5 sq feet to nine and one half square feet 9 5 sq feet depending on standard unit size chosen it is necessary that any wood floor framing where this unit is placed be designed to carry concentrated loading of approximately 150 lbs sq foot Standard residential concrete slab is a suitable foundation This may be either ...

Page 7: ...es B Framed Opening A Framed Opening C The following chart of dimensions is intended to aid in the positioning of a Vent Free fireplace in a corner condition Firebox A B C D Model 36 43 49 3 4 32 1 2 49 Model 42 49 52 3 4 37 71 3 4 Model 46 53 54 3 4 39 1 2 74 1 2 Notes A A reflects the Vent Free Series base plate dimension B B reflects the Vent Free Series outside center of firebox base plate to ...

Page 8: ... mating components are assembled Face and Surface Cracks Should a face crack appear after the unit is assembled the crack can be repaired in place A crack can be V notched with a masonry chisel to a depth of approximately three eighth inch 3 8 Earthcore Mortar is then squeezed into the face crack and troweled smooth to the surface of the component Note Badly fragmented components should be discard...

Page 9: ... plus the one and one half inch 1 1 2 thick fire brick floor in addition to the height of the concrete block platform 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 as long as there are no wood underpinnings This makes the fireplace finished fire brick floor approximate...

Page 10: ...rbon monoxide detector be installed Gas line for gas log sets used in the Vent Free firebox can be routed through the side wall back wall or floor of the firebox by drilling an appropriately sized hole using a masonry drill bit Electrical Line Feed can be routed through the firebox back wall side walls or floor by drilling an appropriately sized hole using a masonry drill bit Be sure to follow the...

Page 11: ...d It takes a total of about five gallons of mortar mix dry measure to fire brick line a Vent Free Face joints of one quarter inch 1 4 to three eighths inch 3 8 give a good appearance to the finished brick work however larger face joint dimensions are also acceptable Step 1 Wet mop the inside of the Vent Free with a damp sponge to remove dust and loose particles from the interior before installing ...

Page 12: ...or two sided Vent Free fireplaces can be constructed from the standard one sided unit components by eliminating the back wall assembly In this installation the standard side wall components are reversed so that the standard side wall taper sits to the outside of the box leaving the inside of the see thru firebox with two straight and parallel interior walls Angle steel three inch by three inch by ...

Page 13: ...asure of twenty four inches 24 away from the finished opening of the Vent Free fireplace Mantle and Mantle Shelf Clearance Vent Free fireplace are subject to the same building code safety clearances from the firebox opening as with any fireplace opening Parts of the combustible mantle assembly located above and projecting more than one and one half inches 1 1 2 inches from the firebox opening shal...

Page 14: ...anufacturer s agent or supplier Dual Listed Appliance The Vent Free fireplace is certified with the use of dual listed unvented gas log heaters with a maximum input of 40 000 Btu s Do not burn any other type of vented gas log fire wood paper or refuse in the Vent Free fireplace Fuel Do not introduce any type of fuel into the Vent Free fireplace other than the LP or Natural Gas listed for use in th...

Page 15: ...15 Notes ...

Page 16: ...ision thereof is not responsible for any labor costs or indirect costs incurred for the replacement of defective components Earthcore is not responsible for misuse or mishandling of components Nothing in this warranty makes Earthcore 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 ...

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