Superior VD1824PM User 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.
WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
—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.
• 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.
Installation and Operation Instructions
Superior™ Unvented (Vent-Free) Gas Log Heater
P/N 126838-01 Rev. A 01/2014 Models
VD1824NM VD1824PM
P126838-01

SAFETY
WARNING: Improp-
er installation, adjust-
ment, alteration, service
or maintenance can cause
injury or property dam-
age. Refer to this manual
for correct installation and
operational procedures.
For assistance or addi-
tional information consult
a qualied installer, ser-
vice agency or the gas
supplier.
WARNING: This ap-
pliance is for installation
only in a solid-fuel burning
masonry or UL127 factory-
built replace or in a listed
ventless rebox enclosure.
It is design-certified for
theseinstallationsinaccor-
dance with ANSI Z21.11.2.
Exception: DO NOT install
this appliance in a factory-
built replace that includes
instructions stating 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 6
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........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Air For Combustion and Ventilation..................... 6
Installation ........................................................... 8
Operation........................................................... 20
Inspecting Burners............................................. 22
Cleaning and Maintenance................................ 23
Troubleshooting................................................. 24
Parts .................................................................. 28
Specications .................................................... 33
Replacement Parts............................................ 33
Technical Service............................................... 33
Service Hints ..................................................... 33
Accessories ....................................................... 34
Warranty ............................................................ 36

WARNING: This product
contains and/or generates
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc-
tive 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-
making 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.
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 ap-
pliance 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 children
when they are in the room with heater.
When using the hand-held remote
accessory, keep selector switch in
the OFF position to prevent children
from turning on burners with remote.
You must operate this heater with
the replace screen and hood in
place. Make sure replace screen
and hood are in place before running
heater. The replace screen shall
have openings for introduction of
combustion air.
Keep the appliance area clear and
free from combustible materials,
gasoline and other ammable va-
pors and liquids.

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SAFETY
Continued
1. 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.
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 sup-
plier’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.
6. Do not burn solid-fuel in a 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. Any
glass doors shall be fully opened when the
appliance is in operation. 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 Maintenance,
page 23.
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 6. If heater keeps shutting off, see
Troubleshooting, page 24.
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.
20. Solid fuels shall not be burned in a re-
place in which an unvented room heater
is installed.
21. Installation and the provisions for com-
bustion and ventilation air must conform
with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54.
22. When installing as a vented appliance in a
manufactured home or mobile home, the
installation must conform with the Manu-
factured Home Construction and Safety
Standard, Title 24 CFR, Part 3280, or
when applicable, with Manufacture Home
Installations Standard, ANSI/NCBCS
A225.1/NFPZ 501A.

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126838-01A 5
Figure 1 - Yellow Flame Vent-Free Gas Log Heater
LOCAL CODES
UNPACKING
PRODUCT IDENTIFICATION
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
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.
CAUTION: Do not remove the
data plates from the grate as-
sembly. The data plates contain
important warranty and safety
information.
1. Remove logs 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 logs and heater for shipment.
3. Check heater for any shipping damage.
If heater is damaged call INNOVATIVE
HEARTH PRODUCTS at 1-800-655-2008
for replacement parts before returning to
dealer.
PRODUCT FEATURES
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 ap-
proved to ANSI Z21.11.2 standard for un-
vented heaters. State and local codes in some
areas prohibit the use of vent-free heaters.
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.
Control Knob
Log Set
Left
Side
Right
Side
Front

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AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
not be installed ina roomor 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
local codes. Read the following
instructions to insure proper
fresh air for this and other fuel-
burningappliances inyour 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.
During 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.
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 appliances.
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 6 through 8 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of 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 8.
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
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
doorless passageways or ventilation grills
between the rooms.

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126838-01A 7
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.
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
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
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 8.
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: If the area in which
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/NFPA54,
the International Fuel Gas Code,
or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconned space, you must provide
two permanent openings: one within 12" of the
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). Fol-
low the National Fuel Gas Code ANSI Z223.1/
NFPA 54 Air for Combustion and Ventilation for
required size of ventilation grills or ducts.

www.SuperiorFireplaces.US.com 126838-01A8
INSTALLATION
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.
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 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.
AIR FOR COMBUSTION AND VENTILATION
Continued
NOTICE: State or local codes may
only allow operation of this appliance
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, 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.
WARNING: Any outside air ducts
and/or ash dumps in the replace
shall be permanently closed at time
of appliance installation.
WARNING: Seal any fresh air
vents or ash clean-out doors located
on oor or wall of replace. If not,
drafting may cause pilot outage
or sooting. Use a heat-resistant
sealant. Do not seal chimney ue
damper.
WARNING: Never install the
heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture, cloth-
ing or other ammable objects
are less than 36" from front or
42" from top of heater. For side
clearances see Figure 4, page 9
• in high trafc areas
• in windy or drafty areas

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126838-01A 9
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 u-
ids, 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 6.
CHECK GAS TYPE
Use only the correct gas type (natural or pro-
pane/LP) for your unit. If your gas supply 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.
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only)
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Side Wall 16", Ceiling 42", Front 36"
Carefully follow the 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 the side of the 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".
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 replace opening is not
needed. Go to Installing Damper
Clamp Accessory for Vented
Operation, page 11.
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
INSTALLATION
Continued
LOG SIZING REQUIREMENTS
Log
Size
Minimum Firebox
Height Depth
Front
Width
Rear *
Width
18" 17" 13.5" 24" 20.5"
24" 17" 13.5" 28" 20.5"
* Measured at 13.5" depth.
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
oor, ceiling and adjoining wall.

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Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All
minimum
distances
are in
inches
2
1
/ 2 "
6"
8"
10"
INSTALLATION
Continued
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 inches up (for all models). If noncombustible
material is less than 12", you must install the
replace hood accessory. Even if noncombus-
tible material is more than 12", you may need
the hood accessory to deect heat away from
your mantel shelf. See Figure 5, and Figures
6 and 7 (page 11) 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.
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.
Determining Minimum Mantel Clearance
If you meet minimum clearance between
mantel shelf and top of replace opening, a
hood is not required (see Figure 6).
Figure 6 - Minimum Mantel Clearances
Without Using Hood
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 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" thick. With sheet metal,
you must have noncombustible material be-
hind it. Noncombustible material must extend
at least 12" up (for all models). See Figure 5
for minimum clearances.
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
Noncombustible
Material Distance (A)
Requirements for Safe
Installation
12" or more Noncombustible mate-
rial OK.
Between 8"
and 12"
Install fireplace hood
accessory (GA6050 or
GA6053, see Accesso-
ries, page 34).
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 and
damper clamp installed.

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126838-01A 11
INSTALLATION
Continued
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
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 clear-
ances shown in Figure 7 when using hood.
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
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:
• raise the mantel to an accept-
able height
FLOOR CLEARANCES
A. If installing appliance on the oor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 8).
B. If combustible materials are less than
14" to the replace, you must install ap-
pliance at least 5" above the top surface
of combustible ooring including tile and
carpet. (see Figure 9).
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 replace with a working ue and con-
structed of noncombustible material.
For Massachusetts Residents Only: Instal-
lation of this vented gas log set in the Com-
monwealth of Massachusetts requires 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.
1. The replace does not meet the clearance
to combustibles requirements for vent-free
operation.
2. State or local codes do not permit vent-
free operation.
3. You prefer vented operation.
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material

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INSTALLING HEATER BASE
ASSEMBLY
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 or log
misplacement.
INSTALLATION
Continued
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
34). This will insure vented operation (see Fig-
ure 10). The damper clamp will keep damper
open. Installation instructions are included
with clamp accessory.
Chimney
Height
Minimum Permanent
Flue Opening
6' to 15' 39 sq. in.
15' to 30' 29 sq. in.
Figure 10 - Attaching Damper Clamp
Damper
Clamp
Manufactured Fireplace
Masonry Fireplace
Damper
Clamp
Area of Various Standard
Round Flues
Diameter Area
5" 20 sq. in.
6" 29 sq. in.
7" 39 sq. in.
8" 51 sq. in.
Damper
Damper
Damper
See chart for minimum permanent ue open-
ing you must provide. Attach damper clamp so
the minimum permanent ue opening will be
maintained at all times.
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
being damaged. Raise replace
oor with noncombustible mate-
rial. Make sure material is secure.
CAUTION: Do not pick up
heater base assembly by burn-
ers. This could damage heater.
Only handle base assembly by
grates.
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 exible gas hose and ttings (if
allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit (metal or
masonry as applicable)
• athead screwdriver
• pipe wrench
1. Connect approved exible gas hose to
gas control tting in heater (see Figure
11, page 13).
IMPORTANT: Hold gas tting with wrench
when connecting exible gas hose.
2. Locate two masonry screws in hardware
package.
3. Place heater base in replace.
4. Place logs in their proper position on heater
base (see Installing Logs, page 16).
5. Center heater base and logs front-to-back
and side-to-side in replace.
6. Carefully remove logs without moving
heater base.
7. Mark screw locations through one hole on
each side of the mounting bracket (see
Figure 12, page13). If installing in a brick-
bottom replace, mark screw locations in
mortar joint of bricks.

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126838-01A 13
8. Remove heater base from replace. If
installing optional control accessories,
do so at this time. Follow all directions
provided with accessory.
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).
Figure 11 - Attaching Flexible Gas Hose
to Heater
Flexible Gas
Hose (if allowed
by local codes)
Fitting
INSTALLATION
Continued
Figure 12 - Attaching Base to Fireplace
Floor
Masonry
Screw
Mounting
Bracket
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection
to the pressure regulator.
WARNING: A qualied service
person must connect heater to
gassupply.Follow all localcodes.
CAUTION: Never connect
propane/LP replace directly
to the propane/LP supply. This
heater requires an external regu-
lator (not supplied). Install the
external regulator between the
heater and propane/LP 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
* 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 units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11" and 14" of water. If you do not re-
duce incoming gas pressure, heater regulator
damage could occur. Install external regulator
with the vent pointing down as shown in Figure
13. Pointing the vent down protects it from
freezing rain or sleet.
Figure 13 - External Regulator With Vent
Pointing Down
External
Regulator
Propane/LP
Supply Tank
Vent
Pointing
Down

www.SuperiorFireplaces.US.com 126838-01A14
* Purchase the optional equipment shutoff
valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 14 - Gas Connection
Gas
Control
3” Minimum
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)
Cap Pipe Tee
Nipple Joint
Sediment Trap
INSTALLATION
Continued
WARNING: Never connect
natural gas replace to private
(non-utility) gas wells. This gas
is commonly known as wellhead
gas.
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" 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).
IMPORTANT: Install equipment shutoff valve
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 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.
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 from going into heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.
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 noncorrosive leak detec-
tion uid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: Avoid damage to
gas control. Hold gas tting with
wrench when connecting it to
gas piping and/or ttings.

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126838-01A 15
INSTALLATION
Continued
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 16 - Checking Gas Joints
(Propane/LP Model Shown)
Gas Control
Valve Location
Propane/LP
Supply Tank
Equipment
Shutoff Valve
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply
and heater. See guidelines un-
der 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
system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage 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 noncorrosive leak detection uid 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
Figure 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.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/
LP supply to equipment shutoff valve for
propane/LP (see Figures 16 and 17). Ap-
ply noncorrosive leak detection uid to all
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see
Figure 17).
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 control (see Figures 16 and
17). Apply noncorrosive leak detection
uid to all joints. Bubbles forming show a
leak.
5. Correct all leaks at once.
6. Light heater (see Operation, page 20).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 21).
Figure 17 - Checking Gas Joints (Natural
Gas Only)
Gas Meter
Gas Control Valve
Location
Equipment
Shutoff Valve

www.SuperiorFireplaces.US.com 126838-01A16
Figure 18 - Installing Rear and Middle Logs
(Picture may vary from actual)
Rear Log
Burner
Pin for
Hole in
Bottom
of Log
Center Log
Figure 19 - Installing Front Log
(Picture may vary from actual)
Front Log
Grate
INSTALLATION
Continued
LVD18-GO AND LVD24-GO
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place rear log onto base. Holes in bottom
of log must seat over pins on base as
shown in Figure 18.
2. Place center log onto base. Holes in bot-
tom of log must seat over pins on base
as shown in Figure 18.
INSTALLING LOGS
WARNING: Failure to position
theparts inaccordance withthese
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 HI, check
to see if ames contact any log. If
so, reposition logs according to
the log installation instructions
in this manual. Flames contact-
ing logs will create soot.
4. Place left crossover log as shown in Fig-
ure 20, page 17. Match square peg on top
of center log with square hole on bottom
of left crossover log. Match pin on top of
front log with round hole on bottom of left
crossover log.
5. Place center crossover log as shown in
Figure 20, page 17. Match square peg on
top of rear log with square hole on bottom
of center crossover log. Match pin on top
of center log with round hole on bottom
of center crossover log.
6. Place left front crossover log as shown in
Figure 20, page 17. Log should rest on the
grate and t into recess area on the center
log.
3. Place front log onto grate as shown in
Figure 19. Front log has cut outs for the
ngers of the grate to t into.

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126838-01A 17
INSTALLATION
Continued
Figure 20 - Installing Left, Center and
Right Crossover Logs
(Picture may vary from actual)
Right
Crossover
Log
Left
Crossover
Log
Center
Crossover
Log
Square Peg
on Rear Log
Square
Peg on
Middle
Log
Round
Peg on
Front Log Round Peg
on Center
Log
LVD18-PP AND LVD24-PP
1. Place rear log (#1) onto base. Holes in
bottom of log must seat over pins on base
as shown in Figure 21.
2. Place middle log (#2) onto base. Holes in
bottom of log must seat over pins on base
as shown in Figure 21.
3. Place front log (#3) onto grate as shown
in Figure 22.
Figure 21 - Installing Rear and Middle
Logs (Picture may vary from actual)
Burner
Middle Log
Rear Log
Pin for
Hole in
Bottom
of Log
Figure 22 - Installing Front Log
(Picture may vary from actual)
Figure 23 - Installing Left and Right Logs
(Picture may vary from actual)
Front Log
Grate
Left Top
Log
Square Peg
on Rear Log
Right
Top
Log
Round
Peg on
Front Log
4. Place left top log (#4) as shown in Figure
23. Match square peg on top of rear log
(#1) with square hole on bottom of left top
log (#4). Match round peg on top of middle
log (#2) with round hole on bottom of left
top log (#4).
5. Place right top log (#5) as shown in Figure
23. Match square peg on top of rear log
(#1) with square hole on bottom of right
top log (#5). Match round peg on top of
front log (#3) with round hole on bottom
of right top log (#5).
Round
Peg on
Middle
Log

www.SuperiorFireplaces.US.com 126838-01A18
LVD18-CH AND LVD24-CH
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place the rear log onto base. Notches
in the back of the log must seat over
the pins on base as shown in Figure 24.
Make sure the rear log is pushed back
as far as it will go.
INSTALLATION
Continued
Figure 24 - Installing Rear Log
(Picture may vary from actual)
Figure 26 - Installing Front Log
(Picture may vary from actual)
Figure 25 - Installing Middle Log
(Picture may vary from actual)
2. Place the middle log on base. Holes in
bottom of log must seat over pins on
base as shown in Figure 25.
3. Place the front log onto grate as shown
in Figure 26.
4. Place the top right log onto the rear,
middle and front logs as shown in Figure
27 (page 19). The rear, middle and front
logs has notches for the top right log to
set into. You may have to move the front
log from left to right to get it to line up
with the top right log.
Rear Log
Middle Log
Burner
Grate
Pin for Hole
in Bottom of
Log
Pin for
Hole in
Bottom of
Log
Middle Log
Burner

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126838-01A 19
INSTALLATION
Continued
Figure 27 - Installing Top Right Log
(Picture may vary from actual)
Figure 28 - Installing Middle Log
(Picture may vary from actual)
Figure 29 - Installing Top Left Log
(Picture may vary from actual)
Figure 30 - Final assembly
(Picture may vary from actual)
5. Place the top middle log onto the rear
& middle logs as shown in Figure 28.
Make sure to match up the shape on
the bottom of the top middle log with
the notches in the rear and middle logs.
6. Place the top left log onto the middle and
front logs as shown in Figure 29. Make
sure to match up the shape on the bot-
tom of the top left log with the notches
in the middle and front logs.
7. Final assembly is shown in Figure 30.
Log Notch
Front Log
Notch
Top Left Log
Middle Log
Top Middle
Log
Top Right Log
Middle
Log
Front Log
Rear Log
Log
Notch
Log
Notch
Middle
Log
Rear Log

www.SuperiorFireplaces.US.com 126838-01A20
OPERATION
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.
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 replace screen in place.
Make sure replace screen is
closed before running 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 chimney damper closed.
This will put all of the heat into room. However,
there may be times you will desire full ames
of HI heat setting but will nd heat output
excessive. You can open chimney damper
(if you have one) fully or partially to release
some heat.
WARNING: Damper handle
will be hot if heater has been
running.
1. STOP! Read the safety information,
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, column 1. If you
don’t smell gas, go to the next step.