Desa LDL3924PR Quick start guide

UNVENTED (VENT-FREE)
GAS LOG HEATER
OWNER’S OPERATION AND
INSTALLATION MANUAL
Save this manual for future reference.
Save this manual for future reference.
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury, or loss of life.
— Do not store or use gasoline or other
flammablevaporsandliquidsinthevicinity
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.
• Immediatelycallyourgassupplierfroma
neighbor’s phone. Follow the gas
supplier’s instructions.
• Ifyoucannotreachyourgassupplier,call
the fire department.
— Installation and service must be performed
by a qualified installer, service agency, or
the gas supplier.
WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage. Re-
fer to this manual for correct installation
and operational procedures. For assis-
tance or additional information consult a
qualified installer, service agency, or the
gas supplier.
WARNING: This appliance is for installa-
tion only in a solid-fuel burning masonry
or UL127 factory-built fireplace, or in a
listed ventless firebox enclosure. It is de-
sign-certified for these installations in ac-
cordance with ANSI Z21.11.2. Exception:
Do not install this appliance in a factory-
built fireplace that includes instructions
statingithasnotbeentestedorshouldnot
be used with unvented gas logs.
WARNING: 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 4 of this manual.
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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.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Also Design-Certified As Vented Decorative Appliances
24" and 30" Remote-Ready Models
MODELS
LDL3924NR
LDL3924PR
LDL3930NR
LDL3930PR

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WARNING:Donot allow fans to blow directly into
the fireplace. Avoid any drafts that alter burner flame
patterns. Ceiling fans can create drafts that alter
burner flame patterns. Altered burner patterns can
cause sooting.
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Donotplaceclothingorotherflammablematerialon
or near the appliance. Never place any objects on
the heater.
Heater base assembly becomes very hot when run-
ning 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 a fireplace screen
in place. Make sure fireplace screen is closed before
running heater.
Keeptheappliance area clear and free from combus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
TABLE OF CONTENTS
SAFETY INFORMATION ...................................................................2
LOCAL CODES..................................................................................3
UNPACKING ......................................................................................3
PRODUCT IDENTIFICATION ............................................................4
PRODUCT FEATURES .....................................................................4
AIR FOR COMBUSTION AND VENTILATION ..................................4
INSTALLATION ..................................................................................7
OPERATING HEATER.....................................................................15
INSPECTING BURNERS ................................................................17
CLEANING AND MAINTENANCE ...................................................18
SAFETY INFORMATION
DANGER: Carbon monoxide poisoning may lead
to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoning resemble the flu, with headaches, dizziness, or nausea.
If you have these signs, the heater may not be working properly.
Get fresh air at once! Have heater serviced. Some people are
more affected by carbon monoxide than others. These include
pregnant women, people with heart or lung disease or anemia,
those under the influence 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 the gas. The odor
helpsyoudetectagasleak.However,theodoraddedtothegascan
fade. Gas may be present even though no odor exists.
Make certain you read and understand all warnings. Keep this manual
forreference.Itisyourguidetosafeandproperoperationofthisheater.
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or ser-
vicethisheater.Improper use of this heater can cause
serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
WARNING:Anychangetothisheateroritscontrols
can be dangerous.
WARNING: Do not use a blower insert, heat
exchanger insert, or other accessory not approved
for use with this heater.
TABLE OF CONTENTS
SAFETY INFORMATION
TROUBLESHOOTING .....................................................................19
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST..............22
SPECIFICATIONS ...........................................................................24
REPLACEMENT PARTS .................................................................24
WIRING DIAGRAM ..........................................................................24
SERVICE HINTS..............................................................................24
TECHNICAL SERVICE ....................................................................24
OWNER’S REGISTRATION FORM.................................................25
ACCESSORIES ...............................................................................27
WARRANTY INFORMATION............................................ Back Cover
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.

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3
SAFETY INFORMATION
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. Lo-
catepropane/LPsupplytank(s)outdoors(propane/LPunits only).
3. 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 fire department
4. 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 10.
5. Before installing in a solid fuel burning fireplace, the chimney
flue and firebox must be cleaned of soot, creosote, ashes and
loose paint by a qualified chimney cleaner. Creosote will ig-
nite if highly heated. Inspect chimney flue for damage. If dam-
aged, repair flue before operating heater.
6. Do not burn solid-fuel in a masonry or UL127 factory-built
fireplace in which a vent-free room heater is installed.
7. If fireplace has glass doors, never operate this heater with glass
doors closed. If you operate heater with doors closed, heat
buildup inside fireplace will cause glass to burst. Make sure
there are no obstructions across opening of fireplace.
8. Toprevent the creationof soot, follow the instructions in Clean-
ing and Maintenance, page 18.
9. Before using furniture polish, wax, carpet cleaner, or similar
products, turn heater off. If heated, the vapors from these prod-
ucts may create a white powder residue within burner box or
on adjacent walls and furniture.
10. This heater needs fresh, outside air ventilation to run properly.
This heater has an Oxygen Depletion Sensing (ODS) safety
shutoff system.The ODS shuts down the heater if enough fresh
air is not available. See Air for Combustion and Ventilation,
pages 4 through 6. If heater keeps shutting off, see Trouble-
shooting, pages 19 through 21.
11. Do not run heater
• where flammable liquids or vapors are used or stored
• under dusty conditions
12. Do not use this heater to cook food or burn paper or other objects.
13. Do not use heater if any part has been exposed to or under
water. Immediately call a qualified service technician to in-
spect the room heater and to replace any part of the control
system and any gas control which has been under water.
14. Do not operate heater if any log is broken. Do not operate
heater if a log is chipped (dime-sized or larger).
15. Turn heater off and let cool before servicing, installing, or re-
pairing. Only a qualified service person should install, service,
or repair heater.
16. Operating heater above elevations of 4,500 feet may cause pi-
lot outage.
17. To prevent performance problems, do not use propane/LPfuel
tank of less than 100 lb. capacity (propane/LP units only).
18. Provide adequate clearances around air openings.
SAFETY INFORMATION
LOCAL CODES
UNPACKING
LOCAL CODES
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 Z223.1/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
operation is not permitted.
1. Remove logs and heater base assembly from carton. Note: Do
not pick up heater base assembly by burners. This could dam-
age heater. Always handle base assembly by grate.
2. Remove all protective packaging applied to logs and heater
for shipment.
3. Check all items for any shipping damage.If damaged,promptly
inform dealer where you bought heater.
UNPACKING
CAUTION:Donotremovethedataplatesfromthe
grate assembly. The data plates contain important
warranty and safety information.

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AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New mate-
rials,increased insulation, andnew construction methods help reduce
heat loss in homes. Home owners weather strip and caulk around
windowsanddoorstokeepthecoldairoutandthewarmairin.During
heatingmonths,homeownerswanttheirhomesasairtightaspossible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,andfuelburningappliances
drawairfromthehousetooperate.Youmustprovideadequatefresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
WARNING: This heater shall not be installed in a
confined space or unusually tight construction un-
less provisions are provided for adequate combus-
tion and ventilation air. Read the following instruc-
tionstoinsureproper freshair forthisand otherfuel-
burning appliances in your home.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation
classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 6 will help you classify your
space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough
fresh air for combustion and ventilation. However, in buildings of
unusually tight construction, you must provide additional fresh air.
Unusually tight construction is defined as construction
where:
a. walls and ceilings exposed to the outside atmosphere
have a continuous water vapor retarder with a rating
of one perm (6 x 10-11 kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been added on openable win-
dows and doors and
PRODUCT FEATURES
OPERATION
Thisheater isclean burning.It requiresno outsideventing. Thereis no
heat loss out a vent or up a chimney. Heat is generated by realistic
flames.Thisheaterisdesignedforvent-freeoperationwithfluedamper
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. This heater may also be operated as a vented
decorative (ANSI Z21.60) product by opening the flue damper.
SAFETY DEVICE
Thisheater has apilot with anOxygen Depletion Sensing (ODS) safety
shutoff system. The ODS/pilot is a required feature for vent-free room
heaters.TheODS/pilotshutsofftheheaterifthereisnotenoughfreshair.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system requires no matches,
batteries, or other sources to light heater.
PRODUCT IDENTIFICATION
Figure 1 - Product Identification
PRODUCT IDENTIFICATION
REMOTE CONTROL ACCESSORIES
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation
Control
Cover Log
Remote
Control
Control Knob and
Piezo Ignitor
(behind cover log)
8 Piece
Log Set

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5
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation (Cont.)
Determining Fresh-Air Flow for Heater Location
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater _____________ Btu/Hr
Gas water heater* _____________ Btu/Hr
Gas furnace _____________ Btu/Hr
Vented gas heater _____________ Btu/Hr
Gas fireplace logs _____________ Btu/Hr
Other gas appliances* + _____________ Btu/Hr
Total = _____________ Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws com-
bustion air from the outdoors and vents to the outdoors.
Example:
Gas water heater _____________ Btu/Hr
Vent-free heater + _____________ 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)
73,000 Btu/Hr (actual amount of Btu/Hr used)
Thespace in the above exampleis a confined space becausethe actual Btu/
Hrusedismorethanthe maximumBtu/Hrthespacecansupport. Youmust
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 unconfined space, remove door to adjoining
roomor add ventilation grills betweenrooms. SeeVentilationAir From
Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors, page 6.
C. Installa lowerBtu/Hr heater, if lowerBtu/Hr sizemakes roomunconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can
support, the space is an unconfined space. You will need no additional fresh
air ventilation.
AIR FOR COMBUSTION AND
VENTILATION
Continued
40,000
33,000
73,000
c. caulking or sealants are applied to areas such as
joints around window and door frames,between sole
platesandfloors,betweenwall-ceilingjoints,between
wall panels, at penetrations for plumbing, electrical,
and gas lines, and at other openings.
If your home meets all of the three criteria (a,b, and
c, you must provide additional fresh air. See
Ventila-
tion Air From Outdoors , page 6 .
If your home does not meet all of the three criteria
above, proceed to Determining Fresh-Air Flow For
Heater Location .
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a
confined space as a space whose volume is less than 50 cubic feet
per 1,000 Btu per hour (4.8 m3per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as
aspacewhosevolumeisnotlessthan50cubicfeetper1,000Btuper
hour (4.8 m3per 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
furnishedwithdoors,areconsideredapartoftheunconfinedspace.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
DETERMINING FRESH-AIR FLOW FOR
HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Usethis worksheetto determineif youhave aconfined orunconfined space.
Space:Includestheroominwhichyouwillinstallheaterplusanyadjoining
rooms with doorless passageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = ___________ cu. ft. (volume of space)
Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling
height) = 2560 cu. ft. (volume of space)
Ifadditionalventilationtoadjoining roomis suppliedwith grillsor open-
ings, add the volume of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine the maximum Btu/Hr
the space can support.
__________ (volume of space) x 20 = (Maximum Btu/Hr the space
can support)
Example: 2560 cu. ft. (volume of space) x 20 = 51,200 (maximum
Btu/Hr the space can support)
WARNING: If the area in which the heater may be
operated is smaller than that defined as an uncon-
fined space or if the building is of unusually tight
construction,provideadequatecombustionandven-
tilation air by one of the methods described in the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 Sec-
tion 5.3 or applicable local codes .

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VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space.
When ventilating to an adjoining unconfined space, you must
provide two permanent openings: one within 12" of the ceiling and
one within 12" of the floor on the wall connecting the two spaces
(see 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, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
Ventilation Air From Outdoors
Provideextrafreshairbyusingventilationgrillsorducts.Youmust
provide two permanent openings: one within 12" of the ceiling and
one within 12" of the floor. Connect these items directly to the
outdoorsorspacesopentotheoutdoors.Thesespacesincludeattics
and crawl spaces. Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation
for required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet or outlet air into
attic if attic has a thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.
Figure 3 - Ventilation Air from Outdoors
Figure 2 - Ventilation Air from Inside Building
AIR FOR COMBUSTION AND
VENTILATION
Continued
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"

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NOTICE: This heater is intended for use as supple-
mental heat. Use this heater along with your primary
heating system. Do not install this heater as your
primary 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
throughoutthehouse.Intheeventofapoweroutage,
you can use this heater as your primary heat source.
WARNING: A qualified service person must in-
stall heater. Follow all local codes.
NOTICE: State or local codes may only allow opera-
tionofthisapplianceinaventedconfiguration.Check
your state or local codes.
WARNING:Makesuretheselectorswitchisinthe
AUTO position before installing heater.
WARNING: Before installing in a solid fuel burn-
ing fireplace, the chimney flue and firebox must be
cleaned of soot, creosote, ashes and loose paint by
a qualified chimney cleaner. Creosote will ignite if
highly heated. A dirty chimney flue and firebox may
create and distribute soot within the house. Inspect
chimney flue for damage. If damaged, repair flue
before operating heater.
WARNING: Seal any fresh air vents or ash clean-
out doors located on floor or wall of fireplace. If not,
draftingmaycausepilotoutageorsooting.Useaheat-
resistant sealant. Do not seal chimney flue damper.
WARNING: Never install the heater
•in a bedroom or bathroom unless installed as a
vented appliance, see page 10
•in a recreational vehicle
•where curtains, furniture, clothing, or other flam-
mable objects are less than 42 inches from the
front, top, or sides of the heater
•in high traffic areas
•in windy or drafty areas
INSTALLATION
INSTALLATION AND CLEARANCES FOR
VENT-FREE OPERATION
WARNING: Maintain the minimum clearances. If
you can, provide greater clearances from floor, ceil-
ing, and adjoining wall.
IMPORTANT: Vent-freeheaters add moistureto the air.Although
this is beneficial, installing heater in rooms without enough venti-
lation air may cause mildew to form from too much moisture. See
Air for Combustion and Ventilation, pages 4 through 6.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for your unit. If
your gas supply is not correct, do not install log set. Call dealer
where you bought log set for proper type fireplace.
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
coveringsoroperatingheaterwhereimpurities(such
as, but not limited to, tobacco smoke, aromatic
candles, cleaning fluids, oil or kerosene lamps, etc.)
in the air exist, may discolor walls or cause odors.
INSTALLATION
Check Gas Type
Installation and Clearances for Vent-Free Operation
LOG SIZING REQUIREMENTS
Log Minimum Firebox
Size Height Depth Front Rear *
Width Width
18" 17" 14" 24" 20"
24" 17" 14" 28" 21"
30" 17" 14" 34" 24"
36" 17" 14" 40" 30"
MINIMUM FIREPLACE
CLEARANCE TO
COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling
18", 24", 16" 42"
30", and 36"
* Measured at 14" depth.

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Carefully follow the instructions below. This will ensure safe
installation into a masonry, UL127-listed manufactured fireplace,
or listed vent-free firebox.
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
A. Clearances from the side of the fireplace cabinet to any com-
bustible 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
combustible material must be 4" from the side of the fireplace
cabinet (see Figure 4).
Note: When installing your gaslogs intoa manufacturedfirebox,
follow firebox manufacturer’s instructions for minimum clear-
ances to combustible materials.
B. Clearances from the top of the fireplace opening to the ceiling
should not be less than 42 inches.
Figure 4 - Minimum Clearance for Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
INSTALLATION
Continued
Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.)
Above Fireplace
Noncombustible Requirements for
Material Distance (A) Safe Installation
12" or more Noncombustible material OK.
Between 8" and 12" 24" ,30" or 36" Models: Install
fireplace hood accessory (GA6050,
GA6052, or GA6053 see Accesso-
ries , page 27).
18" Model: Noncombustible
material OK.
Less than 8" Noncombustible material must be
extended to at least 8". See Between
8" and 12" , above. If you cannot
extend material, you must operate
heater with flue damper open.
Minimum Noncombustible Material Clearances
If Not Using Mantel
Note: If using a mantel proceed to If Using Mantel. If not using a
mantel, follow the information on this page.
You must have noncombustible material(s) above the fireplace
opening.Noncombustiblematerials(suchasslate,marble,tile,etc.)
must be at least 1/2 inch thick. With sheet metal, you must have
NOTICE: Manual control heaters may be used as a
ventedproduct.Ifso,youmust alwaysrunheaterwith
chimney flue damper open. If running heater with
damper open, noncombustible material above fire-
place opening is not needed. Go to Installing Damper
Clamp Accessory for Vented Operation, page 10.
noncombustible material behind it. Noncombustible material must
extendatleast8"up.Ifnoncombustiblematerialislessthan12",you
mustinstallthefireplacehoodaccessory.SeeFigure5forminimum
clearances.
If Using Mantel
You must have noncombustible material(s) above the fireplace
opening.Noncombustiblematerials(suchasslate,marble,tile,etc.)
must be at least 1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombustible material must
extend at least 8 inches up. If noncombustible material is less than
12",youmustinstallthe fireplace hood accessory. Even if noncom-
bustiblematerialismorethan12",youmayneedthehoodaccessory
to deflect heat away from your mantel shelf. See Figure 5 and
Figures 6 and 7, page 9, for minimum clearances.
IMPORTANT: If you cannot meet these minimum clearances, you
must operate heater with chimney flue damper open. Go to Install-
ing Damper Clamp Accessory for Vented Operation, page 10.
INSTALLATION
Installation and Clearances for Vent-Free Operation (Cont.)
Heat Resistant
Material (A)

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Minimum Non-
Combustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
12"
8"
(A)
18"
8"
20"
14"
22"
17"
24"
20"
All minimum
distances are
in inches
Log Set
24"/30"/36" Models
18" Model
2 1/2"
6"
8"
10"
Minimum Non-
Combustible
Material 8"
Min. 12" 15" 18"
All minimum
distances are
in inches
20"
2
1/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050, GA6052)
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible material clearances, you must
also meet required clearances between fireplace opening and mantel
shelf.Ifyoudonotmeettheclearanceslistedbelow,youwillneedahood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between mantel shelf and top of
fireplace opening, a hood is not required (see Figure 6).
Determining Minimum Mantel Clearance When
Using a Hood
If minimum clearances in Figure 6 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 when using hood.
NOTICE:Surface temperatures of adjacent walls and
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Followallminimumclearancesshowninthismanual.
NOTICE:Ifyourinstallationdoesnotmeettheminimum
clearances shown, you must do one of the following:
•operate the logs only with the flue damper open
•raise the mantel to an acceptable height
•remove the mantel
Figure 6 - Minimum Mantel Clearances Without Using Hood
Figure8-MinimumFireplaceClearancesIfInstalledatFloorLevel
Figure 9 - Minimum Fireplace Clearances Above Combustible
Flooring
Figure 7 - Minimum Mantel Clearances When Using Hood
Hood
(GA6050, GA6052,
or GA6053)
Hearth
5"
Min.
Combustible
Material
INSTALLATION
Mantel Clearances
Floor Clearances
FLOOR CLEARANCES
A. If installing appliance on the floor level, you must maintain
the minimum distance of 14" to combustibles (see Figure 8).
B. If combustible materials are less than 14" to the fireplace, you
must install appliance at least 5" above the combustible floor-
ing (see Figure 9).
14"
Min.
Combustible
Material
Non-Combustible Material
Noncombustible Material

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Figure 11 - Attaching Flexible Gas Hose to Heater
Flexible Gas
Hose (if allowed
by local codes)
Fitting
INSTALLING DAMPER CLAMP ACCESSORY
FOR VENTED OPERATION
Note: When used as a vented heater, appliance must be installed
only in a solid-fuel burning fireplace with a working flue and
constructed of noncombustible material.
Youmayusethisheaterasaventedproduct.Therearethreereasons
for operating your heater in the vented mode.
1. The fireplace does not meet the clearance to combustibles re-
quirements 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 above apply to you, you must permanently
open chimney flue damper. You must install the damper clamp
accessory(toorder,seeAccessories,page27).Thiswillinsurevented
operation(see Figure10).Thedamperclampwill keepdamperopen.
Installation instructions are included with clamp accessory.
See chart below for minimum permanent flue opening you must
provide. Attach damper clamp so the minimum permanent flue
opening will be maintained at all times.
Area of Various Standard
Round Flues
Diameter (ins.) Area (sq. ins.)
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Minimum Permanent
Height (ft.) Flue Opening (sq. ins.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
INSTALLATION
Continued
INSTALLING HEATER BASE ASSEMBLY
WARNING: You must secure this heater to fire-
place floor. If not, heater will move when you adjust
controls. Moving heater may cause a gas leak or log
misplacement.
WARNING: If installing in a sunken fireplace, spe-
cialcareisneeded.Youmustraisethefireplacefloorto
allow access to heater control panel. This will insure
adequate air flow and guard against sooting and con-
trolsbeingdamaged.Raisefireplacefloorwithnoncom-
bustible material. Make sure material is secure.
CAUTION: Donot pickup heaterbase assemblyby
burners. 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)
• approvedflexible gas hose and fittings (not provided) (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)
• flathead screwdriver
• pipe wrench
1. Apply pipe joint sealant lightly to male threads of gas fitting
(not provided). Connect approved flexible gas hose to gas con-
trol fitting in heater (see Figure 11). IMPORTANT: Hold gas
fitting with wrench when connecting flexible gas hose.
2. Locate two masonry screws in hardware package.
3. Place heater base in fireplace.
4. Place logs in their proper position on heater base (see Installing
Logs, page 14).
Figure 10 - Attaching Damper Clamp
Damper
Damper Clamp
Damper
Manufactured Fireplace
Masonry Fireplace
Damper Clamp
Damper
INSTALLATION
Installing Damper Clamp Accessory for Vented Operation
Installing Heater Base Assembly

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11
INSTALLATION
Continued
Figure 12 - Attaching Heater to Fireplace Floor
Masonry
Screw
Screw Holes
in Base
5. Center heater base and logs front-to-back and side-to-side
in fireplace.
6. Carefully remove logs without moving heater base.
7. Mark screw locations through one hole on each side of the
base (see Figure 12). If installing in a brick-bottom fireplace,
mark screw locations in mortar joint of bricks.
8. Drill holes at marked locations using 3/16" drill bit.
9. Attach base assembly to fireplace floor using two masonry
screws (in hardware package).
INSTALLATION
Installing Heater Base Assembly (Cont.)
Installing Batteries for Remote Receiver and Hand-Held Remote Control
INSTALLING BATTERIES FOR REMOTE
RECEIVER AND HAND HELD REMOTE
CONTROL
Four AA batteries and three AAA batteries are required to operate
thisheater with the wireless hand-held remote controlset. Four AA
batteries must be installed in the receiver and three AAA batteries
in the hand-held remote control unit. Note: Only use alkaline
batteries.
Installing Batteries in Receiver
1. Locate slot on battery cover of receiver (see Figure 13). Firmly
insert tool such as a small screwdriver, butter knife, or dime
into the slot and lift up to remove cover.
2. Insert 4 AA batterines into receiver. Positive and negative are
marked inside receiver casing. Note: Receiver will not func-
tion if batteries are not installed correctly.
3. Slide tab on cover into receiver housing and snap cover back
into place.
Figure 14 - Installing Batteries in Remote Control
Cover
Remote
Control
3 AAA
Batteries
Installing Battery into Remote
1. Remove remote cover (see Figure 14).
2. Insert 3 AAA batteries into remote control (see Figure 14).
Positive and negative are marked inside remote control cas-
ing. Note: Remote will not function if batteries are not in-
stalled correctly.
3. Slide remote cover back into place.
Figure 13 - Installing Batteries in Receiver
Cover
Receiver
Slot
4 AA
Batteries
Battery
Housing
Backup
Switch

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Pipe Nipple Cap Tee Joint
* Purchase the optional CSA design-certified equipment shutoff valve
from your dealer. See Accessories, page 27.
** Minimum inlet pressure for purpose of input adjustment.
Figure 16 - Gas Connection
Gas
Control
3" Minimum
Sediment Trap
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)
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible Gas Hose
(if allowed by local codes)
Propane/LP
Supply Tank
External Regulator
INSTALLATION
Continued
Figure 15 - External Regulator With Vent Pointing Down
Vent
Pointing
Down
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.
Checkyourbuildingcodesforanyspecialrequirementsforlocating
equipment shutoff valve to fireplaces.
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
showninFigure16.Locatesedimenttrapwhereitiswithinreachfor
cleaning. Install in piping system between fuel supply and heater.
Locatesediment trap where trapped matter is not likely to freeze. A
sediment trap traps moisture and contaminants. This keeps them
from going into heater controls. If sediment trap is not installed or
is installed wrong, heater may not run properly.
CAUTION:Avoiddamagetogascontrol.Holdgas
fitting with wrench when connecting it to gas piping
and/or fittings.
INSTALLATION
Connecting To Gas Supply
CONNECTING TO GAS SUPPLY
WARNING: This appliance requires a 1/2" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
WARNING: A qualified service person must con-
nect heater to gas supply. Follow all local codes.
CAUTION: Never connect propane/LP fireplace
directlytothepropane/LPsupply.Thisheaterrequires
anexternalregulator(notsupplied).Installtheexternal
regulator between the heater and propane/LP supply.
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
Installation Items Needed
Beforeinstallingheater,makesureyouhavetheitemslistedbelow.
• 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 CSA design-certified equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA design-certified equipment shutoff valve from
your dealer. See Accessories, page 27.
For propane/LP units, the installer must supply an external regula-
tor. The external regulator will reduce incoming gas pressure. You
must reduce incoming gas pressure to between 11 and 14 inches of
water. If you do not reduce incoming gas pressure, heater regulator
damage could occur. Install external regulator with the vent point-
ing down as shown in Figure 15. Pointing the vent down protects it
from freezing rain or sleet.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinnedcoppertubingmaybeusedincertain
areas. Check your local codes. Use pipe of 1/2" diam-
eter 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
plugged1/8"NPTtap.LocateNPTtapwithinreachfortestgaugehook
up. NPT tap must be upstream from heater (see Figure 16).

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13
INSTALLATION
Continued
WARNING: Test all gas piping and connections,
internal and externalto unit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING:Never use anopenflame to checkfor
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
CAUTION: Makesureexternal regulatorhasbeen
installedbetweenpropane/LPsupplyandheater.See
guidelinesunder ConnectingtoGasSupply ,page12.
CHECKING GAS CONNECTIONS
INSTALLATION
Checking Gas Connections
Figure 17 - Equipment Shutoff Valve
Equipment
Shutoff
Valve
ON
POSITION
OFF
P
OS
ITI
O
N
Open
Closed
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 (con-
trol valve) and equipment shutoff valve from gas supply pip-
ing system. Pressures in excess of 1/2 psig will damage heater
regulator.
2. Cap off open end of gas pipe where equipment 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 fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve to gas supply.
Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 17).
2. Pressurizesupplypipingsystembyeitheropeningpropane/LPsup-
ply tank valve for propane/LP gas or opening main gas valve lo-
cated 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 18 and 19). Apply noncorrosive
leak detection fluid 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 propane/LP supply tank valve.
3. Make sure control knob of heater is in the OFF position.
4. Check all joints to gas control (see Figures 18 or 19). Apply
noncorrosive leak detection fluid to all joints. Bubbles form-
ing show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, pages 15 through 17).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appliance, page 16).
Figure 18 - Checking Gas Joints (Propane/LP only)
Gas Control
Valve Location Propane/LP
Supply Tank
Equipment Shutoff Valve
Figure 19 - Checking Gas Joints (Natural Gas Only)
Gas Meter
Gas Control
Valve Location
Equipment Shutoff Valve

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INSTALLATION
Continued
WARNING: Failure to position the parts in accor-
dancewiththesediagramsorfailuretouseonlyparts
specifically approved with this heater may result in
property damage or personal injury.
CAUTION:Afterinstallationandperiodicallythere-
after,check to ensure that noflamecomesincontact
with any log. With the heater set to HI, check to see if
flames contact any log. If so, reposition logs accord-
ing to the log installation instructions in this manual.
Flames contacting logs will create soot.
It is very important to install the logs exactly as instructed. Do not
modify logs. Only use logs supplied with heater.
1. Place rear log (log #1) behind burner on the two pins on rear
bracket (see Figure 20).
2. Place cutouts of middle log (log #2) on burner as shown in
Figure 21.
INSTALLATION
Installing Logs
Figure 20 - Rear Log (Log #1) Placement
Figure 21 - Middle Log (Log #2) Placement
Figure 22 - Placement of Front Logs (Log #3 and Log #4)
INSTALLING LOGS
Log #1
Log #2
Cutout
Cutout
Log #4
3. Place left front log (log #3) on grate prongs as shown in Figure 22.
4. Place right front log (log #4) on peg of log #3 and grate prongs
as shown in Figure 22.
5. Place left crossover log (log #5) on pegs of log #2 and #3 (see
Figure 23). Place middle crossover log (log #6) on pegs of log
#1 and #2 (see Figure 23). Place right crossover log (log #7)
on pegs of log #2 and #4 (see Figure 23).
6. Slide control cover log (log #8) into place between front logs
#3 and #4 (see Figure 24).
Grate
Prongs
Log #3
Peg
Figure 23 - Placement of Crossover Logs (Logs #5, #6, and #7)
Log #5
Log #6
Log #7
Figure 24 - Control Cover Log (Log #8) Placement
Log #8

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15
15
O
F
F
P
I
L
O
T
O
N
OPERATING HEATER
For Your Safety Read Before Lighting
Lighting Instructions
OPERATING HEATER
WARNING:Ifyoudonotfollowtheseinstructions
exactly, a fire or explosion may result causing prop-
erty damage, personal 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 floor because some gas
is heavier than air and will settle on the floor.
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 fire de-
partment.
C. Useonlyyourhandto push in or turnthe gas controlknob.
Never use tools. If the knob will not push in or turn by
hand, don’t try to repair it, call a qualified service techni-
cian or gas supplier. Force or attempted repair may result
in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been under water.
FOR YOUR SAFETY
READ BEFORE LIGHTING
LIGHTING
INSTRUCTIONS
WARNING
•If fireplace has glass doors, never operate this
heater with glass doors closed. If you operate
heater with doors closed, heat buildup inside fire-
placewillcauseglasstoburst.Makesurethereare
no obstructions across opening of fireplace.
•Youmustoperatethisheaterwithafireplacescreen
in place. Make sure fireplace screen is closed
before running heater.
NOTICE:Duringinitialoperationofnewheater,burn-
ing logs will give off a paper-burning smell. Orange
flamewillalsobepresent.Opendamperorwindowto
vent smell. This will only last a few hours.
1. STOP! Read the safety information in column 1.
2. Make sure equipment shutoff valve is fully open.
3. Remove control cover log (see Figure 26).
4. Set remote selector switch in theAUTO position (see Figure 25).
5. Press in and turn control knob clockwise to the
OFF position (see Figure 25).
6. Wait five (5) minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP! Fol-
low “B” in the safety information, column 1. If you don’t
smell gas, go to the next step.
7. Press in and turn control knob counterclockwise
to the PILOT position. Press in control knob for five (5)
seconds (see Figure 25).
Note: You may be running this heater for the first time
after hooking up to gas supply. If so, the control knob may
need to be pressed in for 30 seconds or more. This will al-
low air to bleed from the gas system.
Figure26-ControlKnob(ShownintheOFFPositon)andIgnitor
Button Location
Control
Knob
Ignitor
Button
Control Cover Log
WARNING: Damper handle will be hot if heater
has been running.
WARNING: Burners will come on automatically
withinone minute whenthecontrol valve is intheON
position after the pilot is lit.
Note: Home owners generally prefer to operate 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
flames of the highest heat setting but will find the heat output
excessive. You can open the chimney damper (if you have one)
fully or partially to release some of the heat.
AUTO MAN
Control Knob
Ignitor
Button
Figure 25 - Remote Selector Switch, Control Knob and Ignitor
Button
Remote
Selector
Switch

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HAND-HELD
REMOTE OPERATION
NOTICE: You must light the pilot before using the
hand-held remote control unit. See Lighting Instruc-
tions , page 15.
Shutting Off Heater
Press on/off key on remote control and turn control knob
clockwise tothe OFF position(see Figure 25, page15).
Shutting Off Burners Only (pilot stays lit)
Press the on/off key on remote control or turn control knob
clockwise to the PILOT position.
TO TURN OFF GAS
TO APPLIANCE
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 7 under Lighting Instructions,
page 15.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot.After30seconds,releasecontrolknob.Nowfollowsteps
9 through 11 under Lighting Instructions in column 1.
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
Figure 27 - Pilot (Propane/LP)
Ignitor
Electrode
Pilot Burner
Figure 28 - Pilot (Natural)
Ignitor
Electrode
Pilot Burner
Note: Thepilotflameonnaturalgasunitswillhaveaslightcurve,
but flame should be blue and have no yellow or orange color.
OPERATING HEATER
Continued
OPERATING HEATER
Lighting Instructions (Cont.)
To Turn Off Gas To Appliance
Manual Lighting Procedure
Hand-Held Remote Operation
8. With control knob pressed in, press and release ignitor but-
ton. This will light pilot. The pilot is attached to the rear of
the frontburner. Ifneeded, keep pressing ignitorbuttonuntil
pilot lights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
lightpilot withmatch.To lightpilot withmatch, see Manual
Lighting Procedure.
9. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob.
• If control knob does not pop out when released, contact
a qualified service person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4 through 8.
10. Slightly push in and turn control knob counterclockwise
to the ON position.
11. Press the on/off key on the remote control to turn on appli-
ance main burner. Wait at least 5 seconds before setting
desired flame height.
12. Presstheup ordownkey untilthe smalltriangleis totheleft
oflarge flameicon at the top ofLCD display(see Figure29).
Press the left or right key to set the desired flame height.
13. Replace control cover log (see Figure 26, page 15).
Whentheapplianceandtheremotecontrolareswitchedoff,the
house icon with the room temperature will be displayed. When
the remote control is turned on, other icons will be visible and
the main burner of the appliance will turn on.
1. Turn control knob clockwise to the ON position
(see Figure 25, page 15).
2. PresstheON buttonon remotecontrol(seeFigure29).Wait
5 seconds to send a command to appliance.
Note: An acoustic signal will be heard that confirms the recep-
tion of the command sent from the remote control.
Left and Right
Keys Increase
and Decrease
Set Points
On/Off Button
Flame Height
Indicator
Thermometer
Icon
Clock Icon
Figure 29 - Remote Control
LCD Display
Room
Temperature
Display
(°F or °C)
Sleep Timer
Display
Up and Down
Keys Select
Available
Functions
Lock-Out
Indicator
Low Battery
Indicator
Small Triangle
Icon (Function
Indicator)

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OPERATING HEATER
Hand-Held Remote Operation (Cont.)
INSPECTING BURNERS
Pilot Flame Pattern
Burner Primary Air Holes
Main Burner
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 30 shows a correct pilot flame pattern. Figure 31 shows an
incorrect pilot flame pattern. The incorrect pilot flame is not
touching the thermocouple. This will cause the thermocouple to
cool. When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 31
• turn heater off (see To Turn Off Gas to Appliance, page 16)
• see Troubleshooting, pages 19 through 21
Note: The pilot flame on natural gas units will have a slight curve,
but flame should be blue and have no yellow or orange color.
Figure30-CorrectPilotFlame
Pattern (Your pilot may vary
from pilots shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 31 - Incorrect Pilot
Flame Pattern (Your pilot may
vary from pilots shown)
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes in the fitting at the
burnerentrance.Theseholesmaybecomeblockedwithdustorlint.
Periodically inspect these holes for any blockage and clean if
needed. Blocked air holes will create soot.
MAIN BURNER
Periodically inspect all burner flame holes with the heater running.
All slotted burner flame holes should be open with yellow flame
present. All round burner flame holes should be open with a small
blue flame present. Some burner flame holes may become blocked
by debris or rust, with no flame present. If so, turn off heater and let
cool.Removeblockage,blockedburnerflameholeswillcreatesoot.
OPERATING HEATER
Continued
Fahrenheit/Celsius Temperature Indication
TotogglebetweentemperaturedegreesFahrenheitandCelsius
perform the following steps.
1. Press the up and down key until the small triangle is to the
left of the clock icon (see Figure 29, page 16).
2. From time 0:00, press the left key 10 times. The display
will then show the transmitter address (frequency).
3. Press the right key to toggle from °F to °C and vice versa.
4. Press the left key to exit this function.
Setting Flame Height
Press the up or down key until the small triangle is to the left of
large flame icon at the top of LCD display (see Figure 29, page
16).Presstheleftorrightkeytosetthedesiredflameheight.Six
flame levels are available from 1 (minimum) to 6 (maximum).
Setting Room Temperature
Press the up or down key until the small triangle is to the left of
the thermometer icon (see Figure 29, page 16). Press the left or
right key to set the desired room temperature.
Setting Timer (Sleep Function)
Press the up or down key until the small triangle is to the left of
theclockicon(seeFigure29,page16).Presstheleftorrightkey
tosetthedesiredsleeptime.Maximumsleeptimeis90minutes,
in 15 minute increments. When desired time is set, press the up
or down key to start the timer. When the desired time has
elapsed, the appliance will automatically switch off.
Child Safety Lock-Out
To lock the remote control keys, press the On/Off key then
immediatelypresstheupkey(seeFigure29,page16).Thelock-
out function is active when the lock icon is lit. Repeat key
sequence to unlock keys.
Low Battery Detection and Backup
A battery icon will be displayed on the LCD display when
batteries are low in the remote control (see Figure 29, page 16).
When the receiver detects a low battery condition;
• Three acoustic "beeps" are generated from the receiver
• Applianceisturnedoffandwillgotothemaximumflameheight
• Executionofcommandsisinhibiteduntilbatteriesarereplaced
Whenbatteriesarelow,itisnotpossibletoturnontheappliance
with the remote control. Appliance can be turned on or off
manually by setting the backup switch of the receiver to MAN
position (see Figure 13, page 11). Remote control and receiver
will restart normal operation after batteries are replaced. See
Installing Batteries for Remote Receiver and Hand Held Remote
Control, page 11.
Timeout
Ifapplianceisturnedonandnocommandissenttothereceiver
for 24 hours, appliance will automatically shut down. Com-
mands sent after shutdown will be executed normally.

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CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder and Pilot Air Inlet Hole
Logs
Main Burner
Burner Tube
Pilot Assembly
Pilot Air
Inlet Hole
Ports/Slots
Burner Tube
Injector Holder (May
Be Brass or Aluminum
Depending on Model)
Primary Air Inlet Holes
(Shape of Holes May
Vary by Model)
Figure 32 - Injector Holder On Outlet Burner Tube
Figure 33 - Pilot Inlet Air Hole
Clean the pilot assembly also. A yellow tip on the pilot flame
indicates dust and dirt in the pilot assembly. There is a small pilot
airinletholeabouttwoinchesfromwherethepilotflamecomesout
ofthepilot assembly (see Figure33).With the unit off,lightlyblow
airthroughtheairinlethole.Youmayblowthroughadrinkingstraw
if compressed air is not available.
LOGS
• If you remove logs for cleaning, refer to Installing Logs, page 14,
to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized or larger).
MAIN BURNER
Periodically inspect all burner flame holes with the heater running.
All slotted burner flame holes should be open with yellow flame
present. All round burner flame holes should be open with a small
blue flame present. Some burner flame holes may become blocked
by debris or rust, with no flame present. If so, turn off heater and let
cool.Removeblockage.Blockedburnerflameholeswillcreatesoot.
WARNING: Turn off heater and let cool before
cleaning.
CAUTION: You must keep control areas, burners,
and circulating air passageways of heater clean. In-
spect these areas of heater before each use. Have
heater inspected yearly by a qualified service person.
Heatermayneedmorefrequentcleaningduetoexces-
sivelintfromcarpeting,pethair,beddingmaterial,etc.
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in soot-
ing and property damage.
CLEANING BURNER INJECTOR HOLDER
AND PILOT AIR INLET HOLE
Theprimary air inlet holesallowtheproperamountofairto mix with
the gas. This provides a clean burning flame. Keep these holes clear
of dust, dirt, lint, and pet hair. 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 qualified service person.
We also recommend that you keep the burner tube and pilot
assembly clean and free of dust and dirt. To clean these parts we
recommendusingcompressedairnogreaterthan30PSI.Yourlocal
computer store, hardware store, or home center may carry com-
pressed air in a can. You can use a vacuum cleaner in the blow
position. If using compressed air in a can, please follow the direc-
tionsonthecan. If you don't followdirectionsonthe can, you could
damage the pilot assembly.
1. Remove control cover log and front log.
2. Shut off the unit, including the pilot.Allow the unit to cool for
at least thirty minutes.
3. Inspect burner, pilot, and primary air inlet holes on injector
holder for dust and dirt (see Figures 32 and 33).
4. Blow air through the ports/slots and holes in the burner.
5. Check the injector holder located at the end of the burner tube
again. Remove any large particles of dust, dirt, lint, or pet hair
with a soft cloth or vacuum cleaner nozzle.
6. Blow air into the primary air holes on the injector holder.
7. In case any large clumps of dust have now been pushed into
the burner repeat steps 3 and 4.
8. Replace front log and control cover log (see Installing Logs,
page 14).
CLEANING AND
MAINTENANCE

111515-01C
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19
19
TROUBLESHOOTING
Note: Alltroubleshootingitemsarelistedin
order of operation.
WARNING: Turn off heater
andletcoolbeforeservicing.Only
aqualifiedservicepersonshould
service and repair heater.
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot.ThiscandamageODS/
pilot unit.
POSSIBLE CAUSE
1. Ignitor electrode not connected to igni-
tor cable
2. Ignitor cable pinched or wet
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode positioned wrong
7. Ignitor electrode broken
1. Gas supply turned off or equipment
shutoff valve closed
2. Control knob not in PILOT position
3. Control knob not pressed in while in
PILOT position
4. Air in gas lines when installed
5. Depleted gas supply (propane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
1. Control knob not fully pressed in
2. Control knob not pressed in long enough
3. Safety interlock system has been
triggered
4. Equipment shutoff valve not fully open
5. Pilot flame not touching thermocouple,
which allows thermocouple to cool,
causing pilot flame to go out. This prob-
lem could be caused by one or both of
the following:
A) Low gas pressure
B) Dirty or partially clogged ODS/pilot
6. Thermocouple connection loose at con-
trol valve
7. Thermocouple damaged
8. Control valve damaged
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Tightennut holding piezo ignitor to base
panel of log set. Nut is located behind
base panel
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
7. Replace pilot assembly
1. Turn on gas supply or open equipment
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is
removed
5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 18) or replace ODS/
pilot assembly
7. Replace gas regulator
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. Wait one minute for safetyinterlock sys-
tem to reset. Repeat ignition operation
4. Fully open equipment shutoff valve
5. A) Contact local natural or propane/LP
gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 18) or replace ODS/
pilot assembly
6. Hand tighten until snug, then tighten
1/4 turn more
7. Replace pilot assembly
8. Replace control valve
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition
ODS/pilot lights but flame goes out when
control knob is released
Note: For additional help, visit DESA
HeatingProducts’technicalserviceweb
site at www.desatech.com.
TROUBLESHOOTING

111515-01C
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20
TROUBLESHOOTING
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
Burner does not light after ODS/pilot is lit
Delayed ignition of one or both burners
Burner backfiring during combustion
Slightsmokeor odor during initialoperation
Heater produces a whistling noise when
burners are lit
Whitepowderresidueformingwithinburner
box or on adjacent walls or furniture
Moisture/condensationnoticedonwindows
Darkresidueonlogsinsideoftheirfireplace
Note: After removing all causes of residue
deposits,completelycleanfireplaceandap-
plianceoffresiduebeforereusingappliance
REMEDY
1. Contact local natural or propane/LP gas
company
2. Cleanburner(s)(seeCleaningandMainte-
nance, page 18) or replace burner orifice
3. Reconnect leads (see Wiring Diagram,
page 24)
4. Replace battery in hand-held remote and
receiver
1. Contact local natural or propane/LP gas
company
2. Clean burner(s) (see Cleaning andMain-
tenance, page 18) or replace burner
orifice(s)
1. Clean burner (see Cleaning and Mainte-
nance, page 18) or replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner for dirt and debris. If
found, clean burner (see Cleaning and
Maintenance, page 18)
2. Replace gas control
3. Problem will stop after a few hours of
operation
1. Turn control knob to LO position and
let warm up for a minute
2. Operate burners until air is removed
from line. Have gas line checked by lo-
cal natural or propane/LP gas company
3. Observe minimum installation clear-
ances (see pages 8 through 10)
4. Clean burners (see Cleaning and Mainte-
nance, page 18) or replace burner orifice
1. Turn heater off when using furniture
polish, wax, carpet cleaners, or similar
products
1. Refer to Air for Combustion and Venti-
lation requirements (page 4)
1. Properly locate logs (see InstallingLogs,
page 14)
2. Eliminate source of drafts around heater
3. Clean out air holes at burner inlet. Peri-
odically repeat as needed
4. Remove blockage
POSSIBLE CAUSE
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Thermopile leads disconnected or im-
properly connected
4. Burners will not come on in remote po-
sition
1. Manifold pressure is too low
2. Burner orifice(s) clogged
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing processes
and logs curing
1. Turning control knob to HI position
when burners are cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner
orifice(s)
1. When heated, vapors fromfurniture pol-
ish, wax, carpet cleaners, etc. may turn
into white powder residue
1. Not enough combustion/ventilation air
1. Improper log placement
2. Drafts or other air currents affecting
flame pattern
3. Air holes at burner inlet blocked
4. Burner flame holes blocked