1.16 Mb






36" Peninsula Heat-CirculatingFirebox

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.


Do not store or use gasoline or any other flammable vapors or liquids in the vicinity of this or any other appliance.


Do not try to light any appliance.

Do not touch any electrical switch;

Do not use any phone in your building.

Immediatelycallyourgassupplierfromaneighbor’s phone. Follow the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire department.

Installationandservicemustbeperformedbyaqualified installer, service agency or the gas supplier.

INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.

For more information, visit

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency or the gas supplier.

WARNING: For use only with decorative type unvented room heaters. Do not build a wood fire.

This firebox has been tested and approved by the PFS Corporation for use with any ANS Z21.11.2 approved gas logs.

This firebox may be installed in an aftermarket*, permanently located, manufactured (mobile) home, where not prohibited by state or local codes.

*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.




Local Codes.........................................................




Product Features..................................................


Product Specifications..........................................


Locating Firebox...................................................


Air for combustion and Ventilation........................




Operating Guidelines and Maintenance



Replacement Parts.............................................


Technical Service...............................................







Back Cover


IMPORTANT: Read this owner’s manualcarefullyandcompletely before trying to assemble, operate or service this firebox. Improper use of this firebox can cause serious injury or death fromburns,fire,explosion,electricalshockorcarbonmonoxide poisoning.

CAUTION: Carefully review the instructions supplied with the decorative type unvented room heater for the minimum fireboxsizerequirement.Donot install the appliance in this fireboxunlessthisfireboxmeetsthe minimum dimensions required for the installation.

WARNING: Any change to this firebox or its controls can be dangerous.





WARNING:Donotuseablower insert, heat exchanger insert orotheraccessorynotapproved for use with this firebox.

Donotallowfanstoblowdirectly intothefirebox.Avoidanydrafts that alter burner flame patterns.

Ceiling fans can create drafts that alter burner flame patterns. Altered burner patterns can cause sooting.

Firebox front and screen becomes very hot when running firebox.Keepchildrenandadults away from hot surfaces to avoid burns or clothing ignition. Firebox will remain hot for a time after shutdown. Allow surfaces to cool before touching.

Carefully supervise young children when they are in the room with firebox.

You must operate this fireplace with the provided fireplace screen, hood and brick liner in place.Makesurethesepartsare in place and screens are closed beforerunningheaterinfirebox. The supplied hoods may not be replaced with hoods which may be provided with a log heater.

Keep the appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids.

1.This firebox shall not be installed in a bedroom or bathroom.

2.Never install the firebox

in a recreational vehicle

where curtains, furniture, clothing or other flammable objects are less than 42" from front, top or sides of firebox

in high traffic areas

in windy or drafty areas

3.Do not use this firebox as a wood-burningfireplace. Use only decorative unvented room heaters (log sets).

4.Do not add extra logs or ornaments such as pinecones,vermiculiteorrockwool.Using these added items can cause sooting.

5.Use only the provided hoods or appropriate polished brass hood accessories. See

Accessories on page 17.

6.Vent-freegas log heaters installed in this firebox require fresh air ventilation to run properly. SeeAir for Combustion and

Ventilation, page 6.

7.Do not run heater in firebox

where flammable liquids or vapors are used or stored

under dusty conditions

8.Do not use this firebox to cook food or burn paper or other objects.

9.Never place any objects in firebox or on logs.

10.Turn heater off and let cool before servicing. Only a qualified service person should service and repair firebox.

11.Operatingvent-freelogsinafireboxaboveelevations of 4,500 feet could cause pilot outage.

12.Do not use the firebox if it has been under water due to the shock hazard that could result with the blower accessary (if installed) in place.

13.Provide adequate clearances around air openings.



Local Codes

Install and use firebox with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas

Code ANS Z223.1/NFPA 54*. Firebox must be electrically grounded in accordance with the National Electrical Code, ANS/NFPA70

(latest edition). *Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts.

Sellers of unvented propane or natural gas-firedsupplemental room heaters shall provide to each purchaser a copy of 527

CMR 30 upon sale of the unit.

Vent-freegas products are prohibited for bedroom and bathroom installation in the

Commonwealth of Massachusetts.


1.Remove all protective packaging from inside firebox. Carefully lift the firebox off the bottom corrugated tray.

2.Carton should contain 3 deflective hoods and hardware packet in addition to firebox assembly. If items are missing, inform dealer where you bought firebox.

3.Check heater for any shipping damage. If heater is damaged call FMI PRODUCTS,

LLC at 1-866-328-4537for replacement parts before returning to dealer.

NOTICE: The firebox identification label (including model number, serial number, clearances, etc.) is located directly above the brick liner and under the heat shield. See Figure 20, page 16.

Product Features


This firebox is designed for use with approved

ANS Z21.11.2 decorative type unvented room heaters. (Physical size limitations apply. Refer to minimum firebox requirements supplied with log heater.) The maximum size log this firebox will accept is: width of 32", depth of

19" and a height of 17".

This firebox requires no outside venting or chimney making installation easy and inexpensive. When used without the blower, the firebox requires no electricity making it ideal for emergency backup heat.

Blower Accessory

The FBPS, FGPN and FGPN-LSfirebox will accept the GA3500A accessory. The variable blower allows you to select the fan speed you desire. The blower circulates heated air from the firebox into the room. Use of blower is optional.

Brick Liner

This firebox features a concrete brick liner.As with all concrete liners, this liner may develop slight cracks when exposed to heat. These cracks will not affect the performance of the firebox or vent-freegas logs.



Product Specifications


33 3/4"

4 3/4"

1 1/4"



















1 3/4"


4 1/2"



(Edge of





Brick Liner)



3" TYP.




18 1/2"




36 1/4"




9 1/8"





36 1/2"



42 1/2"



3 5/8"


19 1/2"


Figure 1 - Peninsula (Three-Sided)Firebox

Locating Firebox


Plan where you will install the firebox.This will save time and money later when you install the firebox. Before installation, consider the following:

1.Where the firebox will be located.Allow for wall and ceiling clearances (see Installation Clearances, page 9).

2.Everything needed to complete installation.

3.This model CANNOT be installed in a bedroom or bathroom.

4.Proper air for combustion and ventilation.

5.Consider a location where heat output would not be affected by drafts, air condition ducts, windows or doors.

6.A location that minimizes modifications on existing framing will make installation easier.

Projected installations can extend any distance into the room. A projection may be ideal as a partition between two oth-

erwise common areas when added to an existing, finished wall (see Figure 2).

Internal wall installation provides a discreet viewing option between two adjacent rooms or within an added wall to subdivide an oversize room.

Figure 2 - Projected Installation



Air for combustion and Ventilation

WARNING: This heater shall not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in theNational Fuel Gas Code, ANSI Z223.1/NFPA 54, theInternational Fuel Gas Code, or applicablelocalcodes.Readthe following instructions to insure proper fresh air for this and otherfuel-burningappliances in your home.

Today’s homes are built more energy efficient than ever. New materials, increased insulation and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.

While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burningappliances need fresh air for proper combustion and ventilation.

Exhaustfans,fireboxes,clothesdryersandfuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burningappliances.


The following are excerpts from National Fuel Gas Code ANS Z223.1/NFPA 54,Air for

Combustion and Ventilation.

All spaces in homes fall into one of the three following ventilation classifications:

1.Unusually Tight Construction

2.Unconfined Space

3.Confined Space

The information on pages 6 through 8 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the outside atmosphere have a continuous watervaporretarderwitharatingofone perm (6 x 10-11 kg perpa-sec-m2)or less with openings gasketed or sealed and stripping has been added on openable windows and doors and

c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceilingjoints, between wall panels, at penetrations for plumbing, electrical and gas lines and at other openings.

If your home meets all of the three criteria above, you must provide additional fresh air. See Ventilation Air From Outdoors, page 8.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow for Firebox Location, page 7.

Confined and Unconfined Space

The National Fuel Gas Code ANS Z223.1/

NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per

1,000 Btu/hr (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu/hr (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.

* Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.






Determining if You Have a Confined or Unconfined Space

Use this work sheet to determine if you have a confined or unconfined space.

Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height).

Length x Width x Height =__________cu. ft. (volume of space)

Example: Space size 22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling height) = 3168 cu. ft.

(volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

_ ________ (volume of space) x 20 = (Maximum Btu/Hr the space can support)

Example: 3168 cu. ft. (volume of space) x 20

= 63,360 (maximum Btu/Hr the space can support)

3.Add the Btu/Hr of all fuel burning appliances in the space.

Gas water heater*

___________ Btu/Hr

Gas furnace

___________ Btu/Hr

Vented gas heater

___________ Btu/Hr

Gas fireplace logs

___________ Btu/Hr

Other gas appliances* +__________ Btu/Hr Total =__________ Btu/Hr

* Do not include direct-ventgas appliances.

Direct-ventdraws combustion air from the outdoors and vents to the outdoors.





Gas water heater



Gas firebox logs








4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/

Hr used.

_ _______ Btu/Hr (maximum the space can support)

_ _______ Btu/Hr (actual amount of Btu/Hr used)

Example: 63,360 Btu/Hr (maximum the space can support)

79,000 Btu/Hr (actual amount of

Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A.Rework work sheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air from Inside Building, page 8.

B.Vent room directly to the outdoors. See

Ventilation Air from Outdoors, page 8.

C.Install a lower Btu/Hr gas log heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

WARNING:Iftheareainwhich theheatermaybeoperateddoes notmeettherequiredvolumefor indoor combustion air, combustion and ventilation air shall be provided by one of the methods described in theNational Fuel GasCode,ANSIZ223.1/NFPA54, theInternational Fuel Gas Code, or applicable local codes.





Ventilation Air

Ventilation Air From Inside Building

This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see option

1, Figure 3). You can also remove door into adjoining room (see option 2, Figure 3). Follow the National Fuel Gas Code ANS Z223.1/

NFPA 54 Air for Combustion and Ventilation for required size of ventilation grills or ducts.





Into Adjoining




Option 1

Door into











Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code ANS Z223.1/NFPA 54 Air for

Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermo-stat-controlledpower vent. Heated air entering the attic will activate the power vent.















To Attic


















Inlet Air



Crawl Space



Figure 3 - Ventilation Air from Inside

Figure 4 - Ventilation Air from Outdoors




NOTICE: This firebox in combination with unvented log sets are intended for use as supplemental heat. Use along with your primary heating system. Do not install them as yourprimary heat source. Ifyou have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use unvented logs as your primary heat source.

WARNING: A qualified servicepersonmustinstallfirebox. Follow all local codes.

WARNING: Never install the firebox

in a bedroom or bathroom

in a recreational vehicle

where curtains, furniture, clothing or other flammable objects are less than 42" from the front, top or sides of the firebox

in high traffic areas

in windy or drafty areas





CAUTION: Log heaters installedinthisfireboxcreatewarm aircurrents.Thesecurrentsmove heat to wall surfaces next to firebox.Installingfireboxnexttovinyl orclothwallcoveringsoroperatingfireboxwhereimpurities(such as, but not limited to, tobacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.)intheairexist,maydiscolor walls or cause odors.

IMPORTANT: Vent-freegas log heaters add moisture to the air.Although this is beneficial, installing firebox in rooms without enough ventilation air may cause mildew to form from too much moisture. SeeAir for Combustion and Ventilation, page 6.

IMPORTANT: Make sure the firebox is level. If firebox is not level, log set will not work properly.

Note: Your Vanguard firebox is designed to be used in zero clearance installations. Wall or framing material can be placed against any exterior surface on the rear, sides or top of your firebox, except where standoff spacers are integrally attached. If standoff spacers are attached to your firebox, these spacers can be placed directly against wall or framing materials.

Use dimensions shown for rough openings to create the easiest installation (see Built-In or

Internal Wall Firebox Installation, page 9).


WARNING: Maintain the minimumclearances.Ifyoucan, provide greater clearances from floor, ceiling and adjoining wall.

Carefully follow the instructions below. This will ensure safe installation.

Minimum Wall and Ceiling Clearances

A.Clearances from edge of liner to any combustible wall should not be less than

8" (see Figure 5).

B.Clearances from top of firebox opening to the ceiling should not be less than 42".

C.When the firebox is installed on carpeting or other combustible material, other than wood flooring, the firebox should be installed on a metal or wood panel extending the full width and depth of enclosure.

D.Clearances from the bottom of firebox to the floor is 0".

E.Clearancesfromopenendoffireboxtofacing wall shall should not be less than 36".


box directly on carpet or vinyl.

CAUTION:Useonlytheclearancesspecifiedinthismanualor on the firebox rating plate.

Minimum clearances to combustibles are:

• Sides of outer casing

0" min.

• Drywall to sides and top of

0" min.


front face


Ceiling to opening

42' min.

• Floor (see Minimum Wall

0" min.


and Ceiling Clearances, note C)

Perpendicular walls

4' min.


Right and Left


• Distance to Facing Walls

36" min.


on Sides and End of Firebox



0" Min. Clearance to Upper Frame/Wallboard





8" Min.

42" Min.








Edge of



Brick Liner

0" to Wood






Figure 5 - Minimum Clearance Front View


1/2" Min. Clearance



to Combustibles




36" Minimum



from Edge of



Facial to



Facing Wall



on Open End


43 3/4"

of Firebox


4" Min. from the Perpendicular



Side Wall to the Edge of Facia


Figure 6 - Minimum Clearance - Top View





Mantel Clearances for Built-InInstallation

If placing custom mantel above built-infirebox, you must meet the minimum allowable clearance between mantel shelf and top of firebox opening shown in Figure 7. These are the minimum allowable mantel clearances for a safe installation. Use larger clearances wherever possible to minimize the heating of objects and materials placed on the mantel.

CAUTION: Do not allow thevent-freegas log heater to touch or extend beyond the firebox screen.

If your installation does not meet the above minimum clearances in Figure 7, you must:

raise the mantel to an acceptable height,


remove the mantel.

Wall board or facing material (above firebox)

measurements are

minimum distances

may be of combustible material, including

from top of fireplace

decorative mantel ornaments or other similar

hood to bottom of

projections off of the facing material.


mantel shelf. These



minimum clearances


Mantel replace any other

Top Frame



clearances supplied

(Combustible Material)


with your ANS Z21.11.2


9 1/4"

approved gas logs.







Firebox Top

Combustible 12" 15" 18"



Material 1 1/2"

7" Min.

Max Thickness














Hoods Must


Be Used at


All Times

Note: Fireplace shown as cross-sectionfor clarity. Mantel material may not be less than 7" from top of hood. Do not cover louver openings.

Figure 7 - Minimum Mantel Clearances

for Built-InInstallation

Built-Inor Internal Wall Firebox Installation

Built-ininstallation of this firebox involves installing firebox into aframed-inenclosure.

This makes the front of firebox flush with wall. If installing a mantel above the firebox, you must follow the clearances shown in Figure

7. Follow the instructions below to install the firebox in this manner.

1.Frame in rough opening. The firebox framing should be constructed of 2 x 4 lumber or heavier. Construct framing using dimensions shown in Figure 8 and 9, page 11. It is recommended that the framing be constructed first and the unit be placed in position. After sliding the unit into place, the flanges may be nailed to the framing before applying the wallboard to the exterior framing.

2.If the vent-freefirebox is to be installed directly on carpeting, tile (other than ceramic) or any combustible material other than wood flooring; thevent-freefirebox must be installed upon a metal or wood panel extending the full width and depth of thevent-freefirebox.



22 3/4"








Gas Line


4" Min.



36" Min. to

40 1/4" Min.


Facing Wall





Facing Wall

43 3/4" Min.




Figure 8 - Framing for Built-InFirebox Installation