Superior Fireplaces LBG18SM Owner's manual

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
This appliance may be installed in an aftermarket permanently located, manufactured (mobile) home,
where not prohibited by local codes. This appliance is only for use with the type of gas indicated on the
rating plate. This appliance is not convertible for use with other gases.
WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built
fireplace or in a listed ventless firebox enclosure. It is design-certified for these installations in accordance
with ANSI Z21.11.2. Exception: DO NOT install this appliance in a factory-built fireplace that includes
instructions stating it has not been tested or should not be used with unvented gas logs.
This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions
for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation
section on Page 6 of this manual.
Installation and Operation Instructions
Unvented (Vent-Free) Gas Log Heater
Models
PFS
®
US
Report No. F09-100
BGE18NR BGE18PR BGE2436NR BGE2436PR
P/N 126829-01 REV. B 04/2018
For use with log sets
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury, death, or property damage.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service agency or the gas supplier.
LBG18BM LBG18SM LBG36SM
LBG24BM LBG24SM
LBG30BM LBG30SM
P126829-01

SuperiorFireplaces.us.com 126829-01B2
SAFETY
TABLE OF CONTENTS
Safety .................................................................. 2
Product Identification........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 6
Air For Combustion and Ventilation..................... 6
Installation ........................................................... 9
Operation........................................................... 24
Inspecting Burners............................................. 26
Cleaning and Maintenance................................ 27
Troubleshooting................................................. 29
Wiring Diagram.................................................. 33
Replacement Parts............................................ 33
Service Hints ..................................................... 33
Technical Service............................................... 33
Accessories....................................................... 34
Specifications .................................................... 36
Burners and Log Sets........................................ 36
Parts.................................................................. 37
Warranty............................................................ 43
WARNING: FIRE, EXPLOSION, AND ASPHYXIATION HAZARD
Improperadjustment,alteration,service,maintenance,orinstallationofthis
heater or its controls can cause death or serious injury.
Read and follow instructions and precautions in User’s Information Manual
provided with this heater.
WARNING:Thisapplianceisfor
installationonlyinasolid-fuelburn-
ing masonry or UL127 factory-built
fireplace or in a listed ventless fire-
boxenclosure.Itisdesign-certified
fortheseinstallationsinaccordance
with ANSI Z21.11.2. Exception:
DO NOT install this appliance in a
factory-built fireplace that includes
instructions stating it has not been
tested or should not be used with
unvented gas logs.
WARNING: This is an unvented
gas-firedheater.Itusesair(oxygen)
fromtheroominwhichitisinstalled.
Provisionsforadequatecombustion
andventilationairmustbeprovided.
Refer to Air for Combustion and
Ventilation section on Page 6 of
this manual.
Thisappliancemaybeinstalledinan
aftermarket,* permanently located,
manufactured(mobile)home,where
not prohibited by local codes.
This appliance is only for use with
the type of gas indicated on the
rating plate. This appliance is not
convertibleforusewithothergases.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
WARNING:Thisproductcontains
and/or generates chemicals known
to the state of California to cause
cancer or birth defects or other re-
productive harm.
DANGER: Carbon monoxide
poisoning may lead to death!
WARNING:Vent-freeproductsare
prohibitedforbedroomandbathroom
installation in the Commonwealth of
Massachusetts.

SuperiorFireplaces.us.com
126829-01B 3
SAFETY
Continued
IMPORTANT: Read this owner’s
manualcarefullyandcompletely
before trying to assemble, op-
erate or service this fireplace.
Improper use of this fireplace
can cause serious injury or
death from burns, fire, explo-
sion,electricalshockandcarbon
monoxide poisoning.
Due to high temperatures, the ap-
pliance should be located out of
traffic and away from furniture and
draperies.
Do not place clothing or other flam-
mable material on or near the appli-
ance. Never place any objects on
the heater.
You must operate this heater with
the fireplace screen and hood in
place. Make sure fireplace screen
andhoodareinplacebeforerunning
heater. The fireplace screen shall
have openings for introduction of
combustion air.
Keep the appliance area clear and
free from combustible materials,
gasolineandotherflammablevapors
and liquids.
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner flame
patterns.Alteredburnerpatternscan
cause sooting.
WARNING: Any change to
this heater or its controls can be
dangerous.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not
approvedforusewiththisheater.
Carbon Monoxide Poisoning: Early signs of
carbon monoxide poisoning resemble the flu,
with headaches, dizziness or nausea. If you
have these signs, the fireplace may not be
working properly. Get fresh air at once! Have
fireplace serviced. Some people are more af-
fected by carbon monoxide than others. These
include pregnant women, people with heart
or lung disease or anemia, those under the
influenceof alcohol andthoseathighaltitudes.
Natural and Propane/LP gases are odorless.
Anodor-makingagentisaddedtothesegases.
The odor helps you detect a gas leak. How-
ever, the odor added to the gas can fade. Gas
may be present even though no odor exists.
Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this fireplace.
WARNING: Do not place log
scraps or volcanic stone on burner.
Heaterbaseassemblybecomesvery
hot when running heater. Children
and adults should be alerted to the
hazard of high surface temperature
and should stay away to avoid
burns or clothing ignition. Heater
will remain hot for a time after shut-
down. Allow surface to cool before
touching.
Young children should be carefully
supervisedwhentheyareinthesame
room with the appliance. When us-
ingthehand-heldremoteaccessory,
keepselectorswitchintheOFFposi-
tiontopreventchildrenfromturning
on burners with remote.
Solid-fuels shall not be burned in a
fireplaceinwhichanunventedroom
heater is installed.

SuperiorFireplaces.us.com 126829-01B4
SAFETY
Continued
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/
LP supply tank(s) outdoors (propane/LP
units only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touchany electrical switch; do not
use any phone in your building
• immediately call your gas supplier from
aneighbor’s phone.Followthegassup-
plier’s instructions
• if you cannot reach your gas supplier,
call the fire department
4. This heater shall not be installed in a bed-
room or bathroom, unless installed as a
vented appliance. See Installing Damper
Clamp Accessory for Vented Operation,
Page 12. This gas log set may not be in-
stalled as a vented appliance in a bedroom
orbathroomintheCommonwealthofMas-
sachusetts.
5. Beforeinstallingina solidfuelburning fire-
place, the chimney flue and firebox must
be cleaned of soot, creosote, ashes and
loosepaintbyaqualifiedchimneycleaner.
Creosotewillignite if highlyheated.Adirty
chimney flue may create and distribute
soot within the house. Inspect chimney
flue for damage. If damaged, repair flue
and firebox before operating heater.
6. Do not burn solid-fuel in a masonry or
UL127 factory-built fireplace in which a
vent-free room heater is installed.
7. Iffireplacehasglassdoors, neveroperate
this heater with glass doors closed. Any
Installation and repair should be
done by a qualified service person.
The appliance should be inspected
before use and at least annually by
aprofessionalserviceperson.More
frequent cleaning may be required
duetoexcessivelintfromcarpeting,
beddingmaterial,etc.Itisimperative
thatcontrolcompartments,burners,
and circulating air passageways of
the appliance be kept clean.
1. WARNING: This appliance isonly for
use with the type of gas indicated on
the rating plate.This appliance isnot
convertible for use with other gases.
glassdoorsshallbefullyopened whenthe
appliance is in operation. If you operate
heater with doors closed, heat buildup
inside fireplace will cause glass to burst.
Make sure there are no obstructions
across openings of fireplace.
8. To prevent the creation of soot, follow the
instructionsinCleaning andMaintenance,
Page 27.
9. Before using furniture polish, wax, carpet
cleanerorsimilarproducts,turnheateroff.If
heated,thevaporsfromtheseproductsmay
createawhitepowderresiduewithinburner
box or on adjacent walls and furniture.
10. This heater needs fresh, outside air ven-
tilationtorunproperly. This heater has an
Oxygen Depletion Sensing (ODS) safety
shutoff system.The ODS shuts down the
heater if enough fresh air is not available.
See Air for Combustion and Ventilation,
Page 6. If heater keeps shutting off, see
Troubleshooting,Page 29.
11. Do not run heater
• where flammable liquids or vapors are
used or stored
• under dusty conditions
12. Donotusethis heatertocookfood orburn
paper or other objects.
13. Donotuseheater if any part hasbeenex-
posed to or under water. Immediately call
a qualified service technician to inspect
the room heater and to replace any part
of the control system and any gas control
which has been under water.
14. Donotoperateheater if any logisbroken.
Do not operate heater if a log is chipped
(dime-sized or larger).
15. Turn heater off and let cool before servic-
ing, installing or repairing. Make sure the
selectorswitchisintheOFFposition.Only
a qualified service person should install,
service or repair heater.
16. Make sure the selector switch is in the
OFF position when you are away from
home for long periods of time.
17. Remote-ready heaters must not be con-
nected to any external electrical source.
18. Operating heater above elevations of
4,500 feet may cause pilot outage.
19. Toprevent performance problems, do not
usepropane/LPfuel tank of less than 100
lb. capacity (propane/LP units only).
20. Provide adequate clearances around air
openings.

SuperiorFireplaces.us.com
126829-01B 5
PRODUCT IDENTIFICATION
Figure 1 - Product Identification
Log Set
Control
Knob
Base Assembly
Igniter
Rear Burner
Flame Adjustment
Knob
Left Side
Right Side
Front
LOCAL CODES NOTE:Donotpickupappliancebaseas-
semblyby burners.Thiscould damagethe
appliance.Alwayshandlebaseassembly
by grate.
2. Remove all protective packaging applied
to logs and appliance for shipment.
3. Check appliance for any shipping dam-
age. If appliance is damaged, promptly
inform dealer where you purchased the
appliance.
Install and use appliance with care. Follow all
localcodes.Intheabsenceoflocalcodes,use
the latest edition of The National Fuel Gas
Code, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
25 West 43rd Street, 4th floor
New York, NY 10036
National Fire Protection Association, Inc.
1 Batterymarch Park
Quincy, MA 02169-7471
UNPACKING
1. Removelogsandappliancebase assem-
bly from carton(s).
COMMONWEALTH OF MASSACHUSETTS REQUIREMENTS
These appliances are approved for installation in the US state of Massachusetts if the fol-
lowing additional requirements are met:
• Un-vented Room Heaters shall be installed in accordance with 527 CMR 30.
• Installation and repair must be done by a plumber or gas fitter licensed in the Common-
wealth of Massachusetts.
• Theflexiblegasline connector used shall not exceed36inches(92centimeters)in length.
• The individual manual shut-off must be a T-handle type valve.
• Unvented appliances may NOT be installed in bedrooms or bathrooms.
• A working smoke detector must be installed in the area where vent-free appliances are
installed.
Seller of unvented propane or natural gas-fired supplemental room heaters shall provide
to each purchaser a copy of 527 CMR 30 upon sale of the unit.
CAUTION: Do not remove
the data plates from the grate
assembly. The data plates
contain important warranty
and safety information.

SuperiorFireplaces.us.com 126829-01B6
PRODUCT FEATURES
OPERATION
This heater is clean burning. It requires no out-
side venting. There is no heat loss out a vent or
upachimney.Heatisgeneratedbybothrealistic
flames and glowing coals. This heater is de-
signed for vent-free operation with flue damper
closed.IthasbeentestedandapprovedtoANSI
Z21.11.2 standard for unvented heaters. State
and local codes in some areas prohibit the use
of vent-free heaters. This heater may also be
operatedasaventeddecorative(ANSI Z21.60)
product by opening the flue damper.
SAFETY DEVICE
Thisheaterhasapilotwith an Oxygen Deple-
tionSensing(ODS)safetyshutoffsystem.The
ODS/pilot is a required feature for vent-free
room heaters. The ODS/pilot shuts off the
heater if there is not enough fresh air.
ELECTRONIC IGNITION SYSTEM
This heater has an electronic igniter to light
heater fuel supply.
AIR FOR COMBUSTION AND VENTILATION
Today’shomesarebuilt more energy efficient
thanever.Newmaterials,increasedinsulation
and new construction methods help reduce
heat loss in homes. Homeowners apply
weather strip and caulk around windows and
doorstokeep the coldairoutand thewarmair
in.Duringheatingmonths,homeowners 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-burning ap-
pliancesneedfreshairforpropercombustion
and ventilation.
Exhaust fans, some fireplaces, clothes dryers
and some fuel-burning appliances draw air
from the house to operate. You must provide
adequate fresh air for these appliances. This
will ensure proper venting of vented fuel-
burning appliances.
PROVIDING ADEQUATE
VENTILATION
Thefollowingareexcerptsfrom National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classifications:
WARNING: This heater shall not
be installed in a room or space un-
less the required volume of indoor
combustion air is provided by the
method described in the National
Fuel Gas Code, ANSI Z223.1/NFPA
54, the International Fuel Gas Code,
or applicable local codes. Read the
following instructions to ensure
properfreshair for this and other fuel-
burning appliances in your home.
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on Pages 6-8 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 un-
usually tight construction, you must provide
additional fresh air.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the out-
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10-11 kg per pa-sec-m2) or
less with openings gasketed or sealed
and
b. weather 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-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.
If your home meets all three criteria above,
you must provide additional fresh air. See
Ventilation Air From Outdoors, Page 8.
If your home does not meet all three
criteria above, proceed to Determining
Fresh-AirFlowFor Heater Location,below.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/
NFPA54 allows two methods for determining
whetherthespace inwhichtheheater isbeing

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126829-01B 7
AIR FOR COMBUSTION AND VENTILATION
Continued
installedisconfinedorunconfinedspace.The
standardmethoddefinesa confined spaceas
a space whose volume is less than 50 cubic
feetper1,000 Btu/hr (4.8m3perkw)of the ag-
gregateinputratingofallappliancesinstalled
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 m3per kw) of
the aggregate input rating of all appliances
installedinthat space.Roomscommunicating
directlywiththe spaceinwhichthe appliances
areinstalled*,throughopenings not furnished
with doors, are considered a part of the un-
confined space.
Where the air infiltration rate of a structure is
known,theKnownAirInfiltrationRate Method
may be used. Follow The National Fuel Gas
Code, ANSI Z223.1/NFPA 54 to use this
method to determine if the space is confined
or unconfined.
* Adjoining rooms are communicating only if
therearedoorless passagewaysorventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space Using the Standard
Method
Use this work sheet to determine if you have
a confined or unconfined space.
Space: Includesthe roomin whichyou willinstall
fireplace plus any adjoining rooms with door-
less passageways or ventilation grills between
the rooms.
1. Determine the volume of the space (length
x width x height).
LengthxWidth x Height=__________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 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 = (Maxi-
mum Btu/Hr the space can support)
Example:2560 cu. ft. (volume of space) x
20= 51,200(maximum Btu/Hrthe spacecan
support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free fireplace __________Btu/Hr
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-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater __________Btu/Hr
Vent-free fireplace + _________Btu/Hr
Total =_________Btu/Hr
4.
Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
_______ Btu/Hr (maximum can support)
_______ Btu/Hr (actual amount used)
Example:51,200 Btu/Hr (maximum the
space can support)
73,000 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 sup-
port. You must provide additional fresh air. Your
options are as follows:
A. Rework worksheet, adding the space of an
adjoining room. If the extra space provides
anunconfined space,remove doortoadjoin-
ing 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 fireplace, if lower Btu/
Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
anunconfined space.You willneed noadditional
fresh air ventilation.
40,000
33,000
73,000

SuperiorFireplaces.us.com 126829-01B8
AIR FOR COMBUSTION AND VENTILATION
Continued
Figure 3 - Ventilation Air from Outdoors
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoiningunconfinedspace, youmustprovide
twopermanentopenings: onewithin12" ofthe
ceiling and one within 12" of the floor on the
wall connecting the two spaces (see options
1and2,Figure 2).You can also remove door
into adjoining room (see option 3, Figure 2).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
Figure 2 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent openings: one within 12" of the ceiling
andonewithin12"ofthefloor.Connectthese
items directly to the outdoors or spaces open
to the outdoors. These spaces include attics
and crawl spaces. Follow the National Fuel
Gas Code, ANSI 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
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.
WARNING: If the area in
which the heater may be oper-
ated does not meet the required
volume for indoor combustion
air, combustion and ventilation
air shall be provided by one of
the methods described in the
National Fuel Gas Code, ANSI
Z223.1/NFPA54,theInternation-
al Fuel Gas Code, or applicable
local codes.

SuperiorFireplaces.us.com
126829-01B 9
INSTALLATION
NOTICE: This appliance is in-
tended for supplemental heat-
ing. Use this heater along with
yourprimaryheatingsystem.Do
notinstallthisheaterasyourpri-
mary heat source. If you have a
centralheatingsystem,youmay
run system’s circulating blower
whileusingheater.Thiswillhelp
circulatetheheatthroughoutthe
house. In the event of a power
outage, you can use this heater
as your primary heat source.
NOTICE: State or local codes
mayonlyallow operationofthis
applianceinaventedconfigura-
tion. Check your state or local
codes.
WARNING: A qualified ser-
vice person must install heater.
Follow all local codes.
WARNING:Beforeinstalling
in a solid fuel burning fireplace,
the chimney flue and firebox
must be cleaned of soot, creo-
sote, ashes and loose paint by
a qualified chimney cleaner.
Creosote will ignite if highly
heated.Adirtychimneyfluemay
createanddistributesootwithin
thehouse.Inspectchimneyand
firebox flue for damage. If dam-
aged, repair flue and firebox
before operating heater.
WARNING: Seal any fresh
air vents or ash clean-out doors
located on floor or wall of fire-
place.Ifnot, draftingmaycause
pilot outage or sooting. Use a
heat-resistant sealant. Do not
seal chimney flue damper.
CAUTION: This heater cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning flu-
ids,oilorkerosenelamps,etc.)in
the air exist, may discolor walls
or cause odors.
WARNING: Never install the
heater
• in a bedroom or bathroom
unless installed as a vented
appliance, see Page 12
• in a recreational vehicle
• where curtains, furniture,
clothing or other flammable
objects are less than 36"
from the front and 42" from
top heater, For side clear-
ances see Figure 4 Page 10
• in high traffic areas
• in windy or drafty areas
WARNING: Any outside air
ducts and/or ash dumps in the
fireplace shall be permanently
closed at time of appliance in-
stallation.
IMPORTANT:Vent-freeheatersaddmoisture
totheair.Although this is beneficial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much
moisture.SeeAir for CombustionandVentila-
tion, Page 6.

SuperiorFireplaces.us.com 126829-01B10
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
Carefully follow these instructions. This will
ensure safe installation into a masonry,
UL127-listed manufactured fireplaceorlisted
vent-free firebox.
Minimum Clearances For Side
Combustible Material, Side Wall and
Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and
wall should follow diagram in Figure 4.
Example:Theface ofamantel,bookshelf,
etc. is made of combustible material and
protrudes 3-1/2" from the wall. This com-
bustiblematerialmustbe4" from the side
of the fireplace cabinet (see Figure 4).
NOTE: When installing your gas logs into
a manufactured firebox, follow firebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace
opening to the ceiling should not be less
than 42".
WARNING:Donotallowfans
to blow directly into the firebox.
Avoidanydraftsthatalterburner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
NOTICE:Manualcontrolheaters
maybeusedasaventedproduct.
Ifso,youmustalwaysrunheater
withchimneyfluedamperopen.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed.GotoInstallingDamper
Clamp Accessory for Vented
Operation, Page 12.
WARNING: Maintain the
minimumclearances.Ifyoucan,
providegreaterclearancesfrom
floor,ceilingandadjoining wall.
Minimum Fireplace Clearance to
Combustible Materials
Side Wall 16", Ceiling 42", Floor 5",
Front 36"
CHECK GAS TYPE
Usethecorrecttypeofgas(naturalorpropane/
Usethecorrecttypeofgas(naturalorpropane/
LP). If your gas supply is not the correct gas
type, do not install appliance. Call the dealer
whereyoupurchasedtheapplianceforproper
type appliance.
INSTALLATION AND CLEARANCES
FOR VENT-FREE OPERATION
LOG SIZING REQUIREMENTS
Log Set
Model
No.
Minimum Firebox Size
Height Depth Front
Width Rear* Width
LBG18SM 17" 13.5" 20" 14"
LBG24SM 17" 13.5" 26" 18"
LBG30SM 21'' 13.5'' 32'' 22''
LBG36SM 21'' 13.5'' 38'' 27.5''
LBG18BM 17'' 14.5'' 26'' 20''
LBG24BM 17'' 14.5'' 29'' 22''
LBG30BM 21'' 14.5'' 32'' 22''
Maintain adequate clearances for accessibility for purposes of
servicing and proper operation.

SuperiorFireplaces.us.com
126829-01B 11
INSTALLATION
Continued
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
MINIMUM NONCOMBUSTIBLE
MATERIAL CLEARANCES
If Not Using Mantel
NOTE: If using a mantel proceed to If Using
Mantel. If not using a mantel, follow the infor-
mation on this page.
You must have noncombustible material(s)
above the fireplace opening. Noncombus-
tible materials (such as slate, marble, tile,
etc.) must be at least 1/2" thick. With sheet
metal, you must have noncombustible ma-
terial behind it. Noncombustible material
must extend at least 8" up (for all models). If
noncombustiblematerialislessthan12",you
mustinstallthe fireplacehoodaccessory (24",
30" and 36" Models Only). See Figure 5 for
minimum clearances.
If Using Mantel
You must have noncombustible material(s)
abovethefireplaceopening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be-
hindit.Noncombustiblematerialmustextend
at least 8" up (for all models). If noncombus-
tiblematerialislessthan12",youmustinstall
the fireplace hood accessory (24", 30" and
36" Models Only). Even if noncombustible
material is more than 12", you may need the
hood accessory to deflect heat away from
your mantel shelf. See Figures 5 and 6 and
Figure 7, Page 12, for minimum clearances.
IMPORTANT:If you cannot meet these
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, Page 12.
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required
clearances between fireplace opening and
mantelshelf.Ifyoudo notmeetthe clearances
listed below, you will need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between
mantel shelf and top of fireplace opening, a
hood is not required (see Figure 6).
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Heat Resistant
Material
(A)
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside of
Mantel Shelf
12"
8"
(A)
18"
14"
20"
17"
22"
19"
24"
20"
All minimum
distances are
in inches
Log Set
24"/30"/36"
Models
18" Model
2 1/2"
6"
8"
10"
Mantel Shelf
Noncombustible
Material
Distance (A)
Requirements for Safe
Installation
1 2" or more Noncombustible material
OK.
Between 8" and 12" 24", 30" or 36" Models:
Install fireplace hood ac-
cessory (GA6050 - see
Accessories,Page 34).
18" Model: Noncombus-
tible material OK.
Less than 8"
Noncombustible material
must be extended to at
least 8". See Between
8" and 12", above. If you
cannot extend material,
you must operate heater
with flue damper open.
Minimum clearance requirements include any projections such
as shelves, window sills, mantels, etc. above the appliance.

SuperiorFireplaces.us.com 126829-01B12
INSTALLATION
Continued
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Figure 7 - Minimum Mantel Clearances
When Using Hood
FLOOR CLEARANCES
A. If installing appliance on the floor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 8).
B. If combustible materials are less than
14" to the fireplace, you must install ap-
pliance at least 5" above the top surface
of combustible flooring including tile and
carpet (see Figure 9).
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Minimum
Noncombustible
Material
8"
Min.
12" 15" 18"
All minimum
distances are
in inches
Log Sets
18", 24",
30" & 36"
Models
20"
2
1/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050 or
GA6053)
Top of
Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
NOTE: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burningfireplacewithaworkingflueandcon-
structed of noncombustible material.
For Massachusetts Residents Only: Instal-
lationofthisgas log setasaventedappliance
in the Commonwealth of Massachusetts re-
quires the damper be permanently removed
or welded in the fully open position.
If your heater is a manually-controlled model,
you may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
NOTICE: Surface temperatures
of adjacent walls and mantels
become hot during operation.
Walls and mantels above the
firebox may become hot to
the touch. If installed properly,
these temperatures meet the
requirement of the national
product standard. Follow all
minimum clearances shown in
this manual.
Notice: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• operate the logs only with
the flue damper open
• raise the mantel to an ac-
ceptable height
• remove the mantel
Determining Minimum Mantel Clearance
When Using a Hood
If minimum clearances in Figure 6, Page 11,
arenotmet,youmusthaveahood.Whenusing
a hood there are still certain minimum mantel
clearances required. Follow minimum clear-
ances shown in Figure 7, when using hood.

SuperiorFireplaces.us.com
126829-01B 13
INSTALLATION
Continued
Area of Various Standard Round Flues
Diameter Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Height Minimum Permanent Flue Opening
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Damper
Damper
Clamp
Damper
Damper
Clamp Damper
Figure 10 - Attaching Damper Clamp
Manufactured Fireplace
Masonry Fireplace
1. Thefireplacedoes notmeettheclearance
to combustibles requirements for vent-
free operation.
2. State or local codes do not permit vent-
free operation.
3. You prefer vented operation.
If reasons number 1 or 2 apply to you, you
mustpermanentlyopen chimney fluedamper.
Youmustinstallthedamperclampaccessory
(to order, see Accessories,Page 34). This
willensureventedoperation(seeFigure 10).
The damper clamp will keep damper open.
Installation instructions are included with
clamp accessory.
See chart below for minimum permanent flue
opening you must provide. Attach damper
clamp so the minimum permanent flue open-
ing will be maintained at all times.
WARNING:Youmustsecure
this heater to fireplace floor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.
CAUTION: Do not pick up
heater base assembly by burn-
ers. This could damage heater.
Only handle base assembly by
grates.
WARNING: If installing in a
sunken fireplace, special care
is needed. You must raise the
fireplace floor to allow access
to heater control panel. This
will ensure adequate air flow
and guard against sooting and
controls being damaged. Raise
fireplacefloorwithnoncombus-
tiblematerial.Makesurematerial
is secure.
IMPORTANT:Make sure the heater burners
are level. If heater is not level, heater will not
work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose and fittings (if
allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16” masonry drill bit
NOTE: Install optional Receiver and Hand-
Held Remote Control Kit (see Accessories,
Page 34)beforeinstallinggas log heater.See
installation instructions included with the kit.
INSTALLING HEATER BASE
ASSEMBLY

SuperiorFireplaces.us.com 126829-01B14
INSTALLATION
Continued
1. Apply pipe joint sealant lightly to male
threads of gas fitting (provided). Connect
approved flexible gas hose to inlet side of
gas control (see Figure 11).
IMPORTANT:Hold gas regulator with
wrench when connecting flexible gas
hose.
2. Position heater base assembly in
fireplace.
3. Mark screw locations through holes in
front panel of base (see Figure 12). If
installinginabrick-bottomfireplace, mark
screw locations in mortar joint of bricks.
4. Remove heater base from fireplace.
5. Drillholesatmarked locations using3/16"
drill bit.
6. Attach base, through holes in front panel
of base, to fireplace floor using masonry
screws provided in hardware package
(see Figure 12).
7. Connect to gas supply. See Connecting
To Gas Supply.
Figure 11 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Gas Control
Flexible Gas Hose
(if allowed by local
codes)
Figure 12 - Attaching Base to Fireplace
Floor
Masonry
Screw
WARNING: This appliance
requires a 3/8" NPT (National
PipeThread)inletconnectionto
the pressure regulator.
WARNING: A qualified ser-
vicepersonmustconnectheater
to gas supply. Follow all local
codes.
CAUTION: Never connect
propane/LP fireplace directly
to the propane/LP supply. This
heaterrequiresanexternalregu-
lator (not supplied). Install the
external regulator between the
heater and propane/LP supply.
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This gas
iscommonlyknownaswellhead
gas.
CONNECTING TO GAS SUPPLY
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approvedflexiblegas line with gasconnec-
tor (if allowed by local codes)
* An equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test
gauge connection. Purchase the optional
equipment shutoff valve from your dealer.

SuperiorFireplaces.us.com
126829-01B 15
Propane/LP
Supply Tank External
Regulator
with Vent
Pointing
Down
Figure 13 - External Regulator With Vent
Pointing Down
INSTALLATION
Continued
Installationmustinclude an equipmentshutoff
valve,unionandplugged1/8" NPTtap.Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from heater (see
Figure 14).
IMPORTANT:Install equipment shutoffvalve
in an accessible location. The equipment
shutoff valve is for turning on or shutting off
the gas to the appliance.
Check your building codes for any special
requirements for locating equipment shutoff
valve to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads.This will preventexcesssealantfrom
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
Pipe Cap Tee
Nipple Joint
* Purchase the optional equipment shutoff
valve from your dealer.
**Minimuminletpressureforpurposeofinput
adjustment.
Figure 14 - Gas Connection
Gas
Control
3" Minimum
Sediment Trap
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if
allowed by local
codes)
PROPANE/LP
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
NATURAL
From Gas
Meter
(5" W.C.**
to 10.5"
W.C.
Pressure)
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of
1/2"diameterorgreatertoallow
proper gas volume to heater. If
pipe is too small, undue loss of
volume will occur.
WARNING: Use pipe joint
sealantthatisresistanttoliquid
petroleum (LP) gas.
CAUTION: Avoid damage to
gas control. Hold gas control
with wrench when connecting
it to gas piping and/or fittings.
Forpropane/LPunits, theinstallermustsupply
an external regulator. The external regulator
will reduce incoming gas pressure. You must
reduceincominggaspressuretobetween 11"
and14"ofwater.Ifyou donotreduceincoming
gas pressure, heater regulator damage could
occur. Install external regulator with the vent
pointing down as shown in Figure 13. Point-
ing the vent down protects it from freezing
rain or sleet.
We recommend that you install a sediment
trap in supply line as shown in Figure 14.
Locate sediment trap where it is within reach
for cleaning. Install in piping system between
fuel supply and heater. Locate sediment trap
where trapped matter is not likely to freeze.
A sediment trap traps moisture and contami-
nants.This keeps them fromgoingintoheater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.

SuperiorFireplaces.us.com 126829-01B16
INSTALLATION
Continued
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 15).
2. Pressurizesupplypipingsystem by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
3. Check all joints from gas meter to equip-
ment shutoff valve for natural gas or
propane/LP supply to equipment shutoff
valveforpropane/LP(seeFigure16or 17).
Apply noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 15 - Equipment Shutoff Valve
Figure 16 - Checking Gas Joints
(Propane/LP Only)
Control Valve
Location
Propane/LP
Supply Tank Equipment
Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Gas Meter
Figure 17 - Checking Gas Joints (Natural
Gas Only)
Control Valve Location
Equipment Shutoff Valve
WARNING:Testallgaspiping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Applyanoncorrosiveleakdetec-
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply
and heater. See guidelines un-
der Connecting to Gas Supply,
Page 14.
CHECKING GAS CONNECTIONS
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance
maingasvalve(controlvalve)andequip-
mentshutoffvalve fromgassupplypiping
system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage heater regulator.
2. Capoffopenendof gaspipewhereequip-
ment shutoff valve was connected.
3. Pressurizesupplypipingsystemby either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
4. Check all joints of gas supply piping sys-
tem. Apply noncorrosive leak detection
fluid to all joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
fittings for leaks.

SuperiorFireplaces.us.com
126829-01B 17
INSTALLATION
Continued
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Fig-
ure 15, Page 16).
2. Open main gas valve located on or near
gas meter for natural gas or open pro-
pane/LP supply tank valve.
3. Make sure control knob of heater is in the
OFF position.
4. Check all joints from equipment shutoff
valve to gas valve (see Figure 16 or 17).
Apply noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operation, Page 24
dependingonyourmodel).Check allother
internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, Page 25, depending on your
model).
INSTALLING LOGS
Log Support Brackets
If installing a LBG36SM, attach log support
brackets before installing logs. These brack-
ets are provided with the BG(E)2436 series
burner systems.
1. Install left bracket to left side of chassis
using 2 screws provided (seeFigure 18).
2. Installrightbracketto right frontofchassis
using 2 screws provided (seeFigure 18).
This bracket will also be used as remote
control bracket if remote is installed.
Figure 18 - Installing Log Support
Brackets
Left Log
Support
Bracket
Chassis
Right Log
Support
Bracket
Right Front of Chassis
INSTALLING SWITCH
A AUTO/OFF/ONswitchandwire assemblyis
supplied with this burner system. This switch
needsto be used only if remote or wall switch
is not being used. Place the wire assembly
and switch into the switch log. Remove the
jumper wire from the control valve and then
connectthewirestothevalvefromtheswitch
assembly as shown in Figure 19.
Figure 19 - Connecting Wires
Control Valve
To AUTO
Terminal
on Switch
To OFF Terminal
on Switch
BGE Series Burner System -
Log Compatibility Chart
Burner Sys-
tem Models Fiber Log Models Concrete Log Models
BGE18NR,
BGE18PR LBG18SM LBG18BM
BGE2436NR,
BGE2436PR
LBG24SM
LBG30SM
LBG36SM
LBG24BM
LBG30BM
WARNING: Failure to posi-
tion the parts in accordance
with these diagrams or failure
to use only parts specifically
approved with this heater may
result in property damage or
personal injury.

SuperiorFireplaces.us.com 126829-01B18
INSTALLATION
Continued
FIBER LOG MODELS
LBG(18,24,30,36)SM
NOTE: Your appliance may vary from model
shown but log placement will be the same.
1. Place bottom log in center of the base
assembly as shown in Figure 21. The
log must sit flat on the black metal sheet
and behind the left metal tab as shown in
Figure 20.
Rear Log
Grate
Prongs
Figure 21 - Installing Log Set
Bottom Log
Base Assembly Front
Right Log
Front Left
Log
Figure 22 - Installing Log Sets
Middle Right Log
Middle
Left Log
Bottom
Log
Pin on Front
Left Log
Figure 23 - Installing LBG36SM Model
Control Cover Logs
Left Control
Cover Log
Right Control
Cover Log Right Small Front Log
Left Small
Front Log
Bracket
Bracket
Figure 20 - Installing Log Set
Ramp
Log
Metal Tab
2. Rest rear log in back corner sections of
base assembly as shown in Figure 21.
Make sure log is completely vertical and
not leaning in toward burner where flame
will touch the log.
3. Position front right log against right side
of grate prongs (see Figure 21).
4. Position front left log against left side of
grate prongs (see Figure 21).
5. Place middle right log over front right and
bottom logs as shown in Figure 22. Be
sure hole in middle right log seats over
pin in bottom log.
6. Place middle left log over front left and
bottom logs as show in Figure 22. Be
sure hole in middle left log seats over pin
in front left log.
7. For LTF36SM, the front right and left
logs are longer and are supported with
brackets on each end
(see Figure 23) .
Placeleftandrightsmallfront logs under
left bracket and beside right bracket.

SuperiorFireplaces.us.com
126829-01B 19
CONCRETE LOG MODELS LBG
(18,24,30) BM
NOTE: Your appliance may vary from model
shown but log placement will be the same.
1. Beforeplacingany logsonthechassisyou
will need to remove the Air Shield located
on the left side near the rear burner as
shown in Figure 25. TheAir Shield is held
in place with one screw, remove the Air
Shield and place the screw back into the
hole in the chassis. Place the Air Shield
with your owner's manual and keep.
2. Place fiber ramp log in center of chassis
as shown in Figure 26. The fiber ramp
log can be identified by the shape and
much lighter weight when compared to
the other logs. The log must sit flat on the
blacksheet metalandbehindtheleft metal
tab as shown. Make sure the side marked
''BOTTOM'' is setting down.
INSTALLATION
Continued
LBG(18,24,30)SM MODELS
LBG36SM MODELS
Figure 24 - Correct Log Placement
8. For LBG36SM, position left and right
control cover logs as shown in Figure
24. These may be placed as desired to
hide controls.
Figure 27 - Installing Left/Right Front Logs
Left Front
Log
Right Front Log
Figure 26 - Installing Fiber Ramp Log
Ramp Log
Metal
Tab
3. Place frontleft (18"D-064,24" D-057 &30"
D-038)andfrontright(18"D-065,24"D-058
& 30" D-039) logs as shown in Figure 27.
Figure 25 - Removing Air Shield
Air Shield
Screw

SuperiorFireplaces.us.com 126829-01B20
INSTALLATION
Continued
5. The right ember bed log 24" & 30'' (D-
047) has a hole in the log that sets on
the grate finger and the other end rest on
the fireplace floor, place log as shown in
Figure 29. The right ember bed logs for
18" (D-072) has a groove on the side that
sets on the ember bed pan and the back
of the log needs to rest against the front
of the base. Make sure the flame from the
ember pan does not touch the ember bed
log. The back side of this log needs to rest
against the front of the base assembly,
make sure the flame from the ember pan
does not touch the ember bed log.
Figure 30 - Installing Left Middle Log
Left Middle
Log
Figure 29 - Installing Right Ember Bed Log
Right Ember
Bed Log
Hole
Underneath
Grate Prong
6. The left middle log (18" D-066, 24" & 30"
D-040) has a groove on the bottom to sit
on the chassis and has to sit on the tab on
the back of the left front log as shown in
Figure 30.
Figure 31 - Installing Right Middle Log
Right Middle
Log
7. The right middle log (18" D-067, 24" & 30"
D-041)hasagrooveonthebottomtositon
thechassisand hastosit onthetabon the
back of the right front. The right middle log
should have a recess area that fits around
the ramp log as shown in Figure 31.
Figure 28 - Installing Left Ember Bed Log
Left Ember
Bed Log
4. Place left ember bed log (18" D-073, 24"
& 30" D-048) as shown in Figure 28. The
log has groove on one side that sets on the
ember bed pan. The back side of this log
needs to rest against the front of the base
assembly. Make sure the flame from the
ember pan does not touch the ember bed
log.