FMI Vantage Hearth VS1824NM Quick start guide

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WARNING: If the information in this manual is not
followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable
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.
• 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 re
department.
— Installation and service must be performed by a quali-
ed installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
VARIABLE MANUALLY CONTROLLED BURNER SYSTEM MODELS
VS1824NM AND VS1824PM
FOR USE WITH THE FOLLOWING LOGS
LVS18-VO, LVS24-VO, LVS18-PP AND LVS24-PP
Also Design-Certied as Vented Decorative Appliance
P F S
®
US

www.fmiproducts.com 125500-01A2
SAFETY
WARNING: Improper
installation, adjustment,
alteration,serviceormain-
tenance can cause injury
or property damage. Refer
to this manual for correct
installation and operation-
al procedures. For assis-
tance or additional infor-
mation consult a qualied
installer, service agency
or the gas supplier.
WARNING: This ap-
pliance is for installation
only in a solid-fuel burning
masonry or UL127 fac-
tory-built fireplace or in
a listed ventless rebox
enclosure. It is design-cer-
tied for these installations
in accordance with ANSI
Z21.11.2. Exception: Do not
install this appliance in a
factory-built replace that
includes instructions stat-
ing it has not been tested
or should not be used with
unvented gas logs.
WARNING: This is an
unvented gas-red heat-
er. 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 Ven-
tilation section on page 5
of this manual.
This appliance may be in-
stalled in an aftermarket,*
permanently located,
manufactured (mobile)
home, where not prohib-
ited 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.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
TABLE OF CONTENTS
Safety .................................................................. 2
Product Identication........................................... 4
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 8
Operation .......................................................... 18
Inspecting Burners............................................. 20
Cleaning and Maintenance................................ 20
Troubleshooting................................................. 22
Parts .................................................................. 26
Specications .................................................... 30
Technical Service............................................... 30
Service Hints ..................................................... 30
Replacement Parts............................................ 30
Accessories ....................................................... 30
Warranty ..............................................Back Cover

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125500-01A 3
WARNING: This product con-
tains and/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, op-
erate or service this replace.
Improper use of this replace
can cause serious injury or
death from burns, re, explo-
sion, electrical shock and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs
of carbon monoxide poisoning resemble the
u, with headaches, dizziness or nausea. If
you have these signs, the replace may not
be working properly. Get fresh air at once!
Have replace serviced. Some people are
more affected by carbon monoxide than oth-
ers. These include pregnant women, people
with heart or lung disease or anemia, those
under the inuence of alcohol and those at
high altitudes.
Natural and Propane/LP Gas: Natural and
propane/LP gases are odorless. An odor-mak-
ing agent is added to these gases. The odor
helps you detect a gas leak. However, 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 replace.
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 ap-
proved for use with this heater.
SAFETY
Continued
WARNING: Do not allow fans
to blow directly into the replace.
Avoid any drafts that alter burner
ame patterns. Ceiling fans can
create drafts that alter burner
ame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of trafc and away from furniture
and draperies.
Do not place clothing or other
ammable material on or near
the appliance. Never place any
objects on the heater.
Heater base assembly becomes
very hot when running heater.
Keep children and adults away
from hot surface to avoid burns
or clothing ignition. Heater
will remain hot for a time after
shutdown. Allow surface to cool
before touching.
Carefully supervise young chil-
dren when they are in the room
with heater.
You must operate this heater
with a replace screen in place.
Make sure replace screen is
closed before running heater.
Keep the appliance area clear
and free from combustible ma-
terials, gasoline and other am-
mable vapors and liquids.
1. This appliance is only for use with type of
gas indicated on rating plate. This appli-
ance is not convertible for use with other
gases.

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SAFETY
Continued
Figure 1 - Product Idetication
11. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
12. This heater needs fresh, outside air ven-
tilation to run properly. This heater has an
Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the
heater if not enough fresh air is available.
See Air for Combustion and Ventilation,
page 5. If heater keeps shutting off, see
Troubleshooting,page 22.
13. Do not run heater
• where ammable liquids or vapors are
used or stored
• under dusty conditions
14. Do not use this heater to cook food or burn
paper or other objects.
15. Do not use heater if any part has been ex-
posed to or under water. Immediately call
a qualied 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.
16. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).
17. Turn heater off and let cool before servic-
ing. Only a qualied service person should
service and repair heater.
18. Operating heater above elevations of
4,500 feet could cause pilot outage.
19. Provide adequate clearances around air
openings.
PRODUCT
IDENTIFICATION
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP
units only).
3. To prevent performance problems, the
use of a propane/LP tank of less than
100 lbs. capacity is not recommended
(propane/LP units only).
4. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not
use any phone in your building
• 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 re department
5. This heater shall not be installed in a
bedroom or bathroom unless installed as
a vented appliance (see Installing Damper
Clamp Accessory for Vented Operation,
page 11). This gas log set may not be
installed as a vented appliance in a bed-
room or bathroom in the Commonwealth
of Massachusetts.
6. Do not burn solid-fuel in a masonry or
UL127 factory-built replace in which a
vent-free room heater is installed.
7. Before installing in a solid fuel burning re-
place, the chimney ue and rebox must
be cleaned of soot, creosote, ashes and
loose paint by a qualied chimney cleaner.
Creosote will ignite if highly heated. A dirty
chimney ue may create and distribute
soot within the house. Inspect chimney
ue and rebox for damage. If damaged,
repair ue before operating heater.
8. If replace has glass doors, never operate
this heater with glass doors closed. If you
operate heater with doors closed, heat
buildup inside replace will cause glass to
burst. Make sure there are no obstructions
across openings of replace.
9. This log heater is designed to be smoke-
less. If logs ever appear to smoke, turn off
heater and call a qualied service person.
Note: During initial operation, slight smok-
ing could occur due to log curing and
heater burning manufacturing residues.
10. To prevent the creation of soot, follow
the instructions in Cleaning and Mainte-
nance, page 20.
Heater Base
Control Knob
Grate

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125500-01A 5
Install and use heater with care. Follow all
local codes. In the absence of local codes,
use the latest edition of The National Fuel
Gas Code ANSI Z223/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Note: Where listed vented decorative logs are
required, thermostat models are not permitted.
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
UNPACkING
LOCAL CODES
CAUTION: Do not remove the
data plates from the grate as-
sembly. The data plates contain
important warranty and safety
information.
1. Remove log and heater base assembly
from cartons.
Note: Do not pick up heater base assem-
bly by burners. This could damage heater.
Always handle base assembly by grate.
2. Remove all protective packaging applied
to log and heater for shipment.
3. Check heater for any shipping damage. If
heater is damaged call FMI PRODUCTS,
LLC at 1-866-328-4537 for replacement
parts before returning to dealer.
OPERATION
This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
realistic, dancing yellow ames. This heater
is designed for vent-free operation with ue
damper closed. It has been tested and
approved to ANSI Z21.11.2 standard for
unvented heaters. State and local codes
in some areas prohibit the use of vent-free
heaters. Non-thermostat models may also
be operated as a vented decorative (ANSI
Z21.60) product by opening ue damper.
SAFETY PILOT
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. 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.
WARNING: This heater shall
not be installed in a room or space
unless the required volume of in-
door 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 lo-
cal codes. Read the following in-
structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efcient
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. Dur-
ing heating months, home owners want their
homes as airtight as possible.
While it is good to make your home energy
efcient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
State of Massachusetts: The installa-
tion must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural
gas-red supplemental room heaters shall
provide to each purchaser a copy of 527
CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for
bedroom and bathroom installation in the
Commonwealth of Massachusetts.

www.fmiproducts.com 125500-01A6
Exhaust fans, replaces, clothes dryers and
fuel 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-burning appli-
ances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from 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 classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 5 through 7 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 dened 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 (6x10-11 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 oors, between wall-ceiling joints,
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 7.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Heater Location.
Conned Space and Unconned Space
The National Fuel Gas Code ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
AIR FOR COMBUSTION AND VENTILATION
Continued
1,000 Btu per hour (4.8 m3 per kw) of the ag-
gregate input rating of all appliances installed
in that space and an unconned space as a
space whose volume is not less than 50 cubic
feet per 1,000 Btu per hour (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 un-
conned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR FIREPLACE LOCATION
Determining if You Have a Conned or
Unconned Space
Use this work sheet to determine if you have
a conned or unconned space.
Space: Includes the room in which you will install
replace 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).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2,560 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: 2,560 cu. ft. (volume of space) x
20 = 51,200 (maximum Btu/Hr the space can
support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free replace _________ Btu/Hr
Gas water heater* _________ Btu/Hr
Gas furnace _________ Btu/Hr
Vented gas heater _________ Btu/Hr
Gas replace 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.

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125500-01A 7
Example:
Gas water heater _________ Btu/Hr
Vent-free replace + _________ 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 the space can
support)
_______ Btu/Hr (actual amount of Btu/Hr
used)
Example: 51,200 Btu/Hr (maximum the
space can support)
71,500 Btu/Hr (actual amount of
Btu/Hr used)
The space in the example is a conned 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 worksheet, adding the space of an
adjoining room. If the extra space provides an
unconned space, remove door to adjoining
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building,
page 7.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 7.
C. Install a lower Btu/Hr replace, if lower Btu/Hr
size makes room unconned.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconned space. You will need no additional
fresh air ventilation.
WARNING:Ifthearea inwhich
the heater may be operated does
not meet the required volume for
indoor combustion air, combus-
tion and ventilation air shall be
provided by one of the methods
described in the National Fuel
Gas Code,ANSI Z223.1/NFPA 54,
the International Fuel Gas Code,
or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned space, you must provide
two permanent openings: one within 12" of the
40,000
31,500
71,500
AIR FOR COMBUSTION AND VENTILATION
Continued
Figure 2 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ve ntilation Grills
Into Adjoining Room,
Option 2
Ve ntilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
Figure 3 - Ventilation Air from Outdoors
Outlet
Air
V e ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air V e ntilated
Crawl Space
T o
Crawl
Space
T o Attic
ceiling and one within 12" of the oor on the
wall connecting the two spaces (see options
1 and 2, 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.
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
and one within 12" of the oor. 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 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 thermo-
stat-controlled power vent. Heated air entering
the attic will activate the power vent.

www.fmiproducts.com 125500-01A8
NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your pri-
mary heat source. If you 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 this heater
as your primary heat source.
WARNING: A qualied ser-
vice person must install heater.
Follow all local codes.
NOTICE:State orlocal codesmay
only allow operation of this appli-
ance in a vented conguration.
Check your state or local codes.
WARNING: Before installing
in a solid fuel burning replace,
the chimney ue and rebox
must be cleaned of soot, creo-
sote, ashes and loose paint by a
qualied chimney cleaner. Creo-
sote will ignite if highly heated. A
dirty chimney ue may create and
distribute soot within the house.
Inspect chimney ue and rebox
for damage. If damaged, repair
ue before operating heater.
WARNING: Seal any fresh
air vents or ash clean-out doors
located on oor or wall of re-
place. If not, drafting may cause
pilot outage or sooting. Use a
heat-resistant sealant. Do not
seal chimney ue damper.
INSTALLATION
WARNING: Never install the
heater
• in a bedroom or bathroom un-
less installed as a vented appli-
ance (see page 11)
• in a recreational vehicle
• where curtains, furniture, cloth-
ing or other ammable objects
are less than 36" from front and
42" from top of heater; for side
clearances see Figure 4, page 9
• in high trafc areas
• in windy or drafty areas
CAUTION: This heater creates
warm air currents. These currents
move heat to wall surfaces next
to heater. Installing heater next
to vinyl or cloth wall coverings or
operating heater where impurities
(such as, but not limited to, to-
bacco smoke, aromatic candles,
cleaning uids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls or cause odors.
IMPORTANT:Vent-free heaters add moisture
to the air. Although this is benecial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much
moisture. See Air for Combustion and Ventila-
tion, page 5.
CHECK GAS TYPE
Use only the correct gas type (natural or
propane/LP) for your unit. If your gas sup-
ply is not correct, do not install heater. Call
dealer where you bought heater for proper
type heater.
WARNING: This appliance is
equipped for either natural gas
or propane/LP gas but not both.
Gas type is indicated on the rat-
ing plate. Field conversion is not
permitted.

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125500-01A 9
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only)
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
oor, ceiling and adjoining wall.
Minimum Fireplace Clearance to
Combustible Materials
Side Wall 16", Ceiling 42", Front 36"
Minimum Firebox Size
Height 17", Depth 14", Front Width 24",
Rear Width 20" (measured at 14" depth).
Carefully follow instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured replace or certi-
ed vent-free rebox.
Minimum Clearances For Side
Combustible Material, Side Wall and
Ceiling
A. Clearances from side of replace cabinet
to any combustible material and wall
should follow diagram in Figure 4.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This com-
bustible material must be 4" from the side
of the replace cabinet (see Figure 4).
Note: When installing your gas logs into
a manufactured rebox, follow rebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the replace
opening to the ceiling should not be less
than 42".
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
INSTALLATION
Continued
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney ue damper open. If
running heater with damper open,
noncombustible material above re-
place opening is not needed. Go to
InstallingDamperClamp Accessory
for Vented Operation, page 11.
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note: If using a mantel, proceed to If Using
Mantel, page 10. If not using a mantel, follow
the information below.
You must have noncombustible material(s)
above the replace opening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2 inch thick. With sheet
metal, you must have noncombustible ma-
terial behind it. Noncombustible material
must extend at least 8" up (for all models).
If noncombustible material is less than 12",
you must install the replace hood accessory
(for all models). See Figure 5 on page 10 for
minimum clearances.
Noncombustible
Material Distance
(A)
Requirements for Safe
Installation
12" or more Noncombustible material
okay.
Between 8" and
12"
Install replace hood
accessory (GA6050 or
GA6053 see Accesso-
ries, page 30).
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 ue damper open.

www.fmiproducts.com 125500-01A10
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
8"
(A)
8" 14" 17" 20"
All minimum
distances are
in inches
Log Set
All Models
2 1/2"
6"
8"
10"
If Using Mantel
You must have noncombustible material(s)
above the replace opening. Noncombustible
materials (such as slate, marble, tile, etc.) must
be at least 1/2" thick. With sheet metal, you
must have noncombustible material behind it.
Noncombustible material must extend at least
8" up. See Figure 5, page 9, and Figure 6 for
minimum clearances.
IMPORTANT: If you cannot meet these mini-
mum clearances, you must operate heater
with chimney ue damper open. Go to Install-
ing Damper Clamp Accessory for Vented
Operation, page 11.
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required
clearances between replace opening and
mantel shelf. If you do not meet the clearances
listed below, you will need a hood.
You must meet the minimum clearances
between the mantel shelf and the top of the
replace opening as shown in Figure 6.
Determining Minimum Mantel Clearance
When Using a Hood
If minimum clearances in Figure 6, page 10,
are not met, you must have a hood. When
using a hood there are still certain minimum
mantel clearances required. Follow minimum
clearances shown in Figure 7 page 11 when
using hood.
NOTICE: Surface temperatures
of adjacent walls and mantels be-
come hot during operation. Walls
and mantels above the rebox
may become hot to the touch.
If installed properly, these tem-
peratures 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
ue damper open
• raise the mantel to an accept-
able height
• remove the mantel
FLOOR CLEARANCES
A. If installing appliance on oor level, you
must maintain the minimum distance of
14" to combustibles (see Figure 8 page
11).
B. If combustible materials are less than 14"
to replace, you must install appliance at
least 5" above combustible ooring (see
Figure 9 page 11).
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace

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125500-01A 11
INSTALLATION
Continued
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
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
INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
Note: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burning fireplace with a working flue and
constructed of noncombustible material.
You may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
1. The replace does not meet the clear-
ance 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
must permanently open chimney ue damper.
You must install the damper clamp accessory
(to order, see Accessories, page 31). This
will insure vented operation (see Figure 10).
The damper clamp will keep damper open.
Installation instructions are included with
clamp accessory.
See chart below for minimum permanent ue
opening you must provide. Attach damper
clamp so the minimum permanent ue open-
ing will be maintained at all times.
Figure 10 - Attaching Damper Clamp
Manufactured
Fireplace
Masonry Fireplace
Damper
Damper
Clamp
Damper
Damper
Minimum
Noncombustible
Material
8"
Min.
12" 15" 18" 20"
2½"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050 or
GA6053)
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
Figure 7 - Minimum Mantel Clearances
When Using Hood

www.fmiproducts.com 125500-01A12
INSTALLATION
Continued
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates
contain important warranty and
safety information.
WARNING: You must secure
this heater to replace oor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.
WARNING: If installing in a
sunken replace, special care
is needed. You must raise the
replace oor to allow access to
heater control panel. This will in-
sure adequate air ow and guard
against sooting and controls be-
ing damaged. Raise replace oor
with noncombustible material.
Make sure material is secure.
CAUTION: Do not pick up
heater base assembly by the
burner. This could damage heat-
er. Only handle base assembly
by grates.
IMPORTANT: Make sure heater burners are
level. If heater is not level, heater will not
work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved exible gas hose (if allowed by
local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit
• athead screwdriver
1. Apply pipe joint sealant lightly to male
threads of the tting to be threaded into
gas regulator. Connect approved exible
gas hose to gas regulator of heater (see
Figure 11).
IMPORTANT: Hold gas regulator with
wrench when connecting exible gas hose.
2. Locate masonry screws in hardware
package.
3. Position heater base assembly in replace.
4. Place log in proper position on heater base
(see Installing Logs, page 15).
5. Center heater base and logs front-to-front
and side-to-side in replace.
6. Carefully remove log without moving
heater base.
7. Mark screw locations through holes in
mounting brackets (see Figure 12). If
installing in a brick-bottom replace, mark
screw locations in mortar joint of bricks.
8. Remove heater base from replace.
9. Drill holes at marked locations using 3/16"
drill bit.
10. Attach base assembly to replace oor
using two masonry screws (in hardware
package) (see Figure 12).
Figure 11 - Attaching Base Assembly to
Fireplace Floor
Heater Gas
Regulator
Flexible Gas Hose
(if allowed by local codes)
Figure 11 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Fitting
Masonry
Screw
Mounting
Bracket

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125500-01A 13
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified
service person must connect
heater to gas supply. Follow
all local codes.
CAUTION: Never connect
propane/LP heater directly to the
propane/LP supply. Propane/LP
heaters require an external regu-
lator (not supplied). Install the
external regulator between the
heater and propane/LP supply.
WARNING: For natural gas
units, never connect heater to
private (non-utility) gas wells.
This gas is commonly known
as wellhead gas.
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
* A 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.
For propane/LP gas, the installer must supply
an external regulator. An external regulator
will reduce incoming gas pressure. You must
reduce incoming gas pressure to between 11"
and 14" of water. If you do not reduce incoming
gas pressure, heater regulator damage could
occur. Install external regulator with vent point-
ing down as shown in Figure 13. Pointing vent
down protects it from freezing rain or sleet.
CAUTION: Use only new, black
iron or steel pipe. Internally-tinned
copper tubing may be used in
certain areas. Check your local
codes. Use pipe of 1/2" diameter or
greater to allow proper gas volume
to heater. If pipe is too small, undue
loss of volume will occur.
Installation must include an equipment shutoff
valve, union and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from heater (see
Figure 14 page 14).
IMPORTANT: Install equipment shutoff valve
in an accessible location. Main gas valve is
for turning on or shutting off gas to the ap-
pliance.
Check your building codes for any special
requirements for locating equipment shutoff
valve to replaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Figure 13 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down

www.fmiproducts.com 125500-01A14
INSTALLATION
Continued
Figure 14 - Gas Connection
* Purchase the optional equipment shutoff
valve from your dealer.
** Min. inlet pressure for purpose of input
adjustment.
Tee Cap Pipe
Joint Nipple
3" Min.
Sediment Trap
Gas
Regulator
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Flexible
Gas Hose (if
allowed by
local codes)
Natural
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Propane/LP
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open ame to check for a leak.
Apply a commercial leak de-
tection solution to all joints.
Bubbles forming show a leak.
Correct all leaks at once.
CAUTION: For propane/LP
units, make sure external regula-
tor has been installed between
propane/LP supply and heater.
See guidelines under Connecting
to Gas Supply, page 13.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance
main gas valve (control valve) and equip-
ment shutoff valve from gas supply piping.
Pressures in excess of 1/2 psig will dam-
age heater regulator.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
3. Pressurize supply piping system 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.
4. Check all joints of gas supply piping system.
Apply a commercial leak detection solution
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
ttings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 15).
2. Pressurize supply piping system 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.
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
We recommend that you install 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 from going into heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or ttings.

www.fmiproducts.com
125500-01A 15
INSTALLATION
Continued
Equipment Shutoff Valve
Propane/LP
Supply Tank
Control Valve
Location
Figure 17 - Checking Gas Joints
(Natural Gas Only)
Gas
Meter
Equipment Shutoff Valve
Control Valve Location
Figure 16 - Checking Gas Joints
(Propane/LP Gas Only)
3. Check all joints from gas meter (natural
gas) or propane/LP supply to equipment
shutoff valve (see Figure 16 or 17). Apply
a commercial leak detection solution to all
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
INSTALLING LOGS
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specically approved with
this heater may result in property
damage or personal injury.
CAUTION: After installa-
tion and periodically thereafter,
check to ensure that no ame
comes in contact with any log.
With the heater set to High, check
to see if ames contact any log.
If so, reposition log according to
the log installation instructions
in this manual. Flames contact-
ing log will create soot.
MODELS LVS18-VO AND LVS24-VO
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place grate into square holes on heater
base as shown in Figure 18.
2. Place front log on burner so that it sits
between grate ngers and burner (see
Figure 18).
Figure 18 - Installing Grate and Logs
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure
15, page 14).
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 gas meter (natural
gas) or propane/LP supply to equipment
shutoff valve (see Figure 16 or 17). Apply
a commercial leak detection solution to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operation page 18).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 19).
Grate
Heater Base
Front Log
The Front Log Should Be
Centered Left To Right.

www.fmiproducts.com 125500-01A16
INSTALLATION
Continued
3. Place rear log on heater base behind the
metal burner. The bottom of the rear log
has recess areas on the left and right side
for the base to set into. Pull the rear log
forward until it touches the front log (see
Figure 18, page 15).
4. Place the left crossover log as shown
in Figure 19. The bottom of the log is
marked with a “L” for left. Match round
peg on left side of top of rear log with
round hole in bottom of left crossover.
Match square peg on left side of top of
front log with square hole in bottom of left
crossover log.
Left Crossover
Log
Figure 19 - Installing Left Crossover Log
Figure 20 - Installing Center Crossover Log
Center
Crossover
Log
Figure 21 - Installing Left Crossover Log
Right
Crossover
Log
5. Place the center crossover log as shown in
Figure 20. The bottom of the log is marked
with a “C” for center. Match square peg
on center of rear log with square hole in
bottom of center crossover. Match round
peg on center of front log with round hole
in bottom of center crossover log.
6. Place the right crossover log as shown in
Figure 21. The bottom of the log is marked
with a “R” for right. Match square peg on
right side of rear log with square hole in
bottom of right crossover. Match round
peg on right side of front log with round
hole in bottom of right crossover log.
7. Add lava rock around base of heater if
desired. Do not place any lava rock on
logs or burner.

www.fmiproducts.com
125500-01A 17
MODELS LVS18-PP AND LVS24-PP
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place grate into square holes on heater
base as shown in Figure 22.
2. Place front log on burner so that it sits
between grate ngers and burner (see
Figure 22).
3. Place rear log so that locating projections
t inside mating holes on back of front
log. The log should rest behind the metal
burner (see Figure 22).
4. Add lava rock around base of heater if
desired. Do not place lava rock on log
or burner.
5. During operation, the logs are positioned
correctly when the ame is between the
front and rear logs, but does not touch
any surface on either of the two logs. If
the ame does touch a log, turn the log
set off and reposition the logs in position
as described in steps 1 thru 3.
INSTALLATION
Continued
Figure 22 - Installing Grate and Logs
Rear Log
Grate
Heater Base
Front Log

www.fmiproducts.com 125500-01A18
OPERATION
LIGHTING
INSTRUCTIONS
WARNING:
• If replace has glass doors,
never operate this heater with
glass doors closed. If you op-
erate heater with doors closed,
heat buildup inside replace
will cause glass to burst. Make
sure there are no obstructions
across openings of replace.
• You must operate this heater
with a fireplace screen in
place. Make sure fireplace
screen is closed before run-
ning heater.
NOTICE: During initial operation
of new heater, burning logs will
give off a paper-burning smell.
Orange ame will also be pres-
ent. Open damper or window to
vent smell. This will only last a
few hours.
Note: Home owners generally prefer to oper-
ate their heater with the chimney damper
closed. This will put all the heat into the room.
However, there may be times you will desire
the full ames of the HI heat setting but will
nd the heat output excessive. You can open
the chimney damper (if you have one) fully or
partially to release some of the heat.
WARNING: Damper handle
will be hot if heater has been
running.
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a re or explosion may result
causing property damage, per-
sonal injury or loss of life.
A. This appliance has a pilot which must
be lighted by hand. When lighting
the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING smell all around
the appliance area for gas. Be sure to
smell next to the oor because some
gas is heavier than air and will settle
on the oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do
not use any phone in your building.
• 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 re department.
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn by
hand, don’t try to repair it, call a quali-
ed service technician or gas supplier.
Force or attempted repair may result in
a re or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualied service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.

www.fmiproducts.com
125500-01A 19
PILOT
OFF
LO
HI
1. STOP! Read the safety information in
column 1.
2. Make sure equipment shutoff valve is fully
open.
3. Press in and turn control knob clockwise
to the OFF position.
4. Wait ve (5) minutes to clear out any gas.
Then smell for gas, including near the
oor. If you smell gas, STOP! Follow “B”
in the safety information, page 18. If you
don’t smell gas, go to the next step.
5. Press in control knob and turn counterclock-
wise to the PILOT position. The
ignitor will spark once. Keep control knob
pressed in for 5 seconds. If control knob does
not pop up when released, contact a qualied
service person or gas supplier for repairs.
Note: You may be running this heater for
the rst time after hooking up to gas sup-
ply. If so, the control knob may need to be
pressed in for 30 seconds or more. This will
allow air to bleed from the gas system.
6. Turn control knob clockwise to
OFF position. Press in control knob and
turn counterclockwise to PILOT
position. This will light pilot. Pilot is at-
tached to rear of burner. If needed, repeat
this process until pilot lights.
Note: If pilot does not stay lit, contact a
qualied service person or gas supplier
for repairs. Until repairs are made, light
pilot with match. To light pilot with match,
see Manual Lighting Procedure.
7. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 3
through 7.
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
8. Slightly press and turn control knob coun-
terclockwise to desired heating
level. The burner should light. Set control
knob to HI or LO.
Figure 23 - Control Knob and Ignitor
Button Location
Control Knob
Figure 24 - Pilot
VARIABLE CONTROL
OPERATION
The variable control valve can be set to high
or low, by simply turning the control knob
until that setting is attained. Even the low-
est setting provides realistic, dancing yellow
ames. Selecting higher settings produces
greater heat output. This results in increased
heating comfort.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
TO TURN OFF GAS
TO APPLIANCE
1. Press in and turn control knob clockwise
to the OFF position.
2. Close equipment shutoff valve (see Figure
15, page 14).
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting
Instructions, page 18.
2. Depress control knob and light pilot
with match.
3. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Now follow step 8
under Lighting Instructions, page 18.
OPERATION
Continued
Ignitor Electrode
Pilot Burner
Thermocouple
WARNING: Do not operate
heater between PILOT and HIGH
positions.
9. To leave pilot lit and shut off burners only,
turn control knob clockwise to the
PILOT position.

www.fmiproducts.com 125500-01A20
INSPECTING BURNERS
Figure 25 - Correct Pilot Flame Pattern
Figure 26 - Incorrect Pilot Flame Pattern
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes
in the tting at the entrance to the burner.
These holes may become blocked with dust
or lint. Periodically inspect these holes for any
blockage and clean as necessary. Blocked air
holes will create soot.
MAIN BURNER
Periodically inspect all burner ame holes with
the heater running. All slotted burner ame
holes should be open with yellow ame pres-
ent. All round burner ame holes should be
open with a small blue ame present. Some
burner ame holes may become blocked by de-
bris or rust, with no ame present. If so, turn off
heater and let cool. Remove blockage, blocked
burner ame holes will create soot.
Check pilot ame pattern and burner ame
patterns often.
PILOT FLAME PATTERN
Figure 25 shows a correct pilot ame pattern.
Figure 26 shows an incorrect pilot ame pat-
tern. The incorrect pilot ame is not touching the
thermocouple. This will cause the thermocouple
to cool. When the thermocouple cools, the
heater will shut down.
If pilot ame pattern is incorrect, as shown
in Figure 26
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 19)
• see Troubleshooting, page 22
Note: The pilot ame on natural gas units will
have a slight curve, but ame should be blue
and have no yellow or orange color.
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
CLEANING AND MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and circu-
lating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a
qualied service person. Heater
may need more frequent clean-
ing due to excessive lint from
carpeting, bedding material, pet
hair, etc.
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
ODS/PILOT AND BURNER
Use a vacuum cleaner or small, soft bristled
brush to clean.
BURNER ORIFICE HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper
amount of air to mix with the gas. This pro-
vides a clean burning ame. Keep these holes
clear of dust, dirt and lint. Clean these air inlet
holes prior to each heating season. Blocked
air holes will create soot. We recommend that
you clean the unit every three months during
operation and have heater inspected yearly
by a qualied service person.