Desa 24" Variably-Controlled Models Quick start guide

WARNING:Iftheinformationinthismanualisnot
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
flammablevaporsandliquidsinthevicinityof
this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Donottouchanyelectricalswitch;donotuse
any phone in your building.
• Immediately call your gas supplier from a
neighbor’sphone.Followthegassupplier’s
instructions.
• If you cannot reach your gas supplier, call
the fire department.
— Installationandservicemustbeperformedby
aqualifiedinstaller,serviceagency,orthegas
WARNING:Improperinstallation,adjust-
ment,alteration,service,ormaintenance
can cause injury or property damage.
Refer to this manual for correct installa-
tionandoperationalprocedures.Foras-
sistance or additional information con-
sultaqualified installer, serviceagency,
or the gas supplier.
WARNING:Thisapplianceisforinstalla-
tiononlyinasolid-fuelburningmasonry
or UL127 factory-built fireplace, or in an
approved ventless firebox. It is design-
certified for these installations in accor-
dancewithANSIZ21.11.2.Exception:Do
not install this appliance in a factory-
built fireplace that includes instructions
stating it has not been tested or should
not be used with unvented gas logs.
WARNING: This is an unvented gas-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.
18", 24", and 30" Variable
Manually-Controlled Models
CRL2718P/N
CRL3124P/N
CCL3018PA/NA
CCL3924PA/NA
18", 24", and 30"
Thermostatically-Controlled Models
CGD3924PT/NT
CGD3018PT/NT
CCL3018PTA/NTA
CCL3924PTA/NTA
CCL3930PTB/NTB
Patent Pending
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 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
(Smoky Mountain Oak Model Shown)
UNVENTED (VENT-FREE)
GAS LOG HEATER
OWNER’S OPERATION AND
INSTALLATION MANUAL
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BILTMORE SPLIT OAK, SEASONAL OAK
AND SMOKY MOUNTAIN OAK LOGS
Variable Manually-Controlled Models Also
Design-Certified As Vented Decorative Appliances

111160-01A
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2
SAFETY INFORMATION
DANGER: Carbon monoxide poisoning may lead
to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoningresemble theflu, withheadaches, 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,peoplewithheartorlungdiseaseoranemia,thoseunderthe
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 for reference. It is your guide to safe and proper operation
of this heater.
WARNINGICON G001
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or ser-
vice this heater. Improper use of this heater can cause
serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
WARNING: Any change to this heater or its con-
trols can be dangerous.
WARNING:Donot allow fans to blow directly into
thefireplace. Avoid any drafts that alter burner flame
patterns. Ceiling fans can create drafts that alter
burner flame patterns. Altered burner patterns can
cause sooting.
WARNING: Do not use a blower insert, heat
exchanger insert, or other accessory not approved
for use with this heater.
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Do not place clothing or other flammable material on
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.
You must operate this heater with a fireplace screen
in place. Make sure fireplace screen is closed before
running heater.
Keep the appliance area clear and free from combus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
TABLE OF CONTENTS
SAFETY INFORMATION
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 4
UNPACKING ............................................................................... 4
PRODUCT FEATURES .............................................................. 4
AIR FOR COMBUSTION AND VENTILATION ........................... 4
INSTALLATION ........................................................................... 7
OPERATING HEATER.............................................................. 17
INSPECTING BURNERS.......................................................... 20
CLEANING AND MAINTENANCE ............................................ 21
TROUBLESHOOTING .............................................................. 22
OPTIONAL POSITIONING OF THERMOSTAT SENSING
BULB FOR MASONRYAND FACTORY-BUILT METAL
FIREPLACE .......................................................................... 25
REPLACEMENT PARTS .......................................................... 26
SERVICE HINTS....................................................................... 26
TECHNICAL SERVICE ............................................................. 26
ACCESSORIES ........................................................................ 26
SPECIFICATIONS .................................................................... 27
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 28
PARTS CENTRAL..................................................................... 38
OWNER’S REGISTRATION FORM.......................................... 39
WARRANTY INFORMATION...................................... Back Cover
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.

111160-01A
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3
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/LPunitsonly).
3. To prevent performance problems, do not use propane/LP fuel
tank of less than 100 lbs. capacity (propane/LP units only).
4. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use any phone in
your building
• immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions
• if you cannot reach your gas supplier, call the fire department
5. This heatershallnot be installedina bedroom orbathroomunless
installed as a vented appliance (Variable Manually-Controlled
Models Only) (see Installing Damper Clamp Accessory for
Vented Operation, page 10).
6. 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.
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 openings of fireplace.
8. This log heater is designed to be smokeless. If logs ever appear
to smoke, turn off heater and call a qualified service person.
Note: During initial operation, slight smoking could occur due
to log curing and heater burning manufacturing residues.
9. Toprevent thecreation of soot,follow theinstructions in Clean-
ing and Maintenance, page 21.
10. 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 or furniture.
11. 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 not enough
fresh air is available. See Air for Combustion and Ventilation,
pages 4 through 6. If heater keeps shutting off, see Trouble-
shooting, pages 22 through 24
12. Do not run heater
• where flammable liquids or vapors are used or stored
• under dusty conditions
13. Donotuse this heatertocook food orburnpaper or otherobjects.
SAFETY INFORMATION
PRODUCT IDENTIFICATION
PRODUCT IDENTIFICATION
Figure 1 - Vent-Free Gas Log Heater - Dual Burner (Logs May
Vary by Model - Smoky Mountain Oak Model Shown)
Figure 2 - Vent-Free Gas Log Heater - Single Burner (Logs May
Vary by Model - Seasonal Oak Model Shown)
14. Do not use heater if any part has been exposed to or under wa-
ter. Immediately call a qualified service technician to inspect
the room heater and to replace any part of the control system
and any gas control which has been under water.
15. Do not operate heater if any log is broken. Do not operate
heater if a log is chipped (dime-sized or larger).
16. Turn heater off and let cool before servicing. Only a qualified
service person should service and repair heater.
17. Operating heater above elevations of 4,500 feet could cause
pilot outage.
18. Provide adequate clearances around air openings.
Middle Log
Front Log
Control Knob
Back Log
Base
Grate
Burner
Piezo
Ignitor
Crossover
Log
Front Log
Control Knob
Back Log
Burner
Piezo Ignitor
Crossover Log

111160-01A
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4
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New
materials, increased insulation, and new construction methods help
reduce heat loss in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out and the warm air
in.Duringheatingmonths,homeownerswanttheir homes asairtight
as possible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
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.
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 exposedtotheoutsideatmosphere
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 win-
dows and doors and
WARNING: This heater shall not be installed in a
confinedspaceorunusuallytightconstructionunless
provisionsareprovidedforadequatecombustionand
ventilation air. Read the following instructions to in-
sure proper fresh air for this and other fuel-burning
appliances in your home.
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, thermo-
stat operation is not permitted.
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 flames. This heater is designed for vent-free opera-
tion with flue damper closed. It has been tested and approved to
ANSIZ21.11.2standardforunventedheaters.Stateandlocalcodes
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 (non-thermostat operation only).
SAFETY PILOT
This heater has a pilot with an Oxygen Depletion 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.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system requires no matches,
batteries, or other sources to light heater.
PRODUCT FEATURES
UNPACKING
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 anyshipping damage.If damaged, promptly
inform dealer where you bought heater.
CAUTION: Do not remove the data plates from the
grate assembly. The data plates contain important
product information.
LOCAL CODES
UNPACKING
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation

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5
Confined and Unconfined Space
NationalFuelGasCode,ANSIZ223.1/NFPA 54definesaconfined
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
appliancesinstalledinthatspaceandanunconfinedspaceasaspace
whose volume is not 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. Rooms communicating directly with the
space in which the appliances are installed*, through openings not
furnishedwithdoors,areconsideredapart of the unconfined space.
* 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 Uncon-
fined Space
Usethiswork sheettodetermine ifyouhavea confinedorunconfined 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)
Ifadditionalventilation toadjoiningroom issuppliedwith grillsoropen-
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)
AIR FOR COMBUSTION AND
VENTILATION
Continued
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 .
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)
79,000 Btu/Hr (actual amount of Btu/Hr used)
Thespaceintheaboveexample is a confined space becausetheactualBtu/
Hrused ismore thanthemaximumBtu/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
roomoraddventilationgrillsbetween rooms. See Ventilation AirFrom
Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors, page 6.
C. Installalower Btu/Hrheater,iflower Btu/Hrsizemakesroom unconfined.
Iftheactual Btu/Hrusedisless thanthemaximum Btu/Hrthespacecan support,
thespaceisanunconfinedspace.Youwillneednoadditionalfreshairventilation.
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation (Cont.)
Determining Fresh-Air Flow for Heater Location
c. caulking or sealants are applied to areas such as
joints around window and door frames, between sole
platesandfloors,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 6 .
Ifyourhome does not meet all ofthethreecriteriaabove,
proceed to Determining Fresh-Air Flow for Heater Loca-
tion , below.
40,000
39,000
79,000

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AIR FOR COMBUSTION AND
VENTILATION
Continued
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 3). You can also remove door into
adjoining room (see option 3, Figure 3). 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
Provideextrafreshairby usingventilationgrillsorducts.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 4 - Ventilation Air from Outdoors
Figure 3 - Ventilation Air from Inside Building
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"
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air

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7
INSTALLATION
WARNING: A qualified service person must in-
stall heater. Follow all local codes.
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 may create and
distribute soot within house. Inspect chimney flue
and firebox for damage. If damaged, repair flue be-
fore 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 (Variable Manually-Controlled
Models Only) (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
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.
IMPORTANT: Vent-free heatersadd moisture to 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
yourgassupplyisnotcorrect,donotinstallheater.Calldealerwhere
you bought heater for proper type heater.
NOTICE: State or local codes may only allow opera-
tionofthisapplianceinaventedconfiguration.Check
your state or local codes.
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 log heater. This will help circulate the
heat from your log heater throughout the house. In
the event of a power outage, you can use this heater
as your primary heat source.
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only)
WARNING: Maintain the minimum clearances. If
you can, provide greater clearances from floor, ceil-
ing, and adjoining wall.
LOG SIZING REQUIREMENTS
Minimum Firebox Size
Log Front Rear*
Size Height Depth Width Width
18" 17" 14" 24" 20"
24" 17" 14" 28" 21"
30" 17" 14" 34" 24"
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling
18", 24", 30" 16" 42"
*Measured at 14" depth
Carefully follow the instructions below. This will ensure safe
installation into a masonry, UL127-listed manufactured fireplace,
or certified vent-free firebox.
INSTALLATION
Check Gas Type
Installation and Clearances for Vent-Free Operation

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INSTALLATION
Continued
NOTICE: Manual control heaters may be used as a
ventedproduct.If so,youmustalwaysrunheaterwith
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.
Minimum Clearances For Side Combustible Mate-
rial, 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 5.
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
opening (see Figure 5).
Note: When installing your gas logs into a manufactured fire-
box, follow firebox manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace opening to the ceiling
should not be less than 42 inches.
Figure 5 - Minimum Clearance for Combustible to Wall
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" up (for all models). If noncombustible material is
lessthan12",youmustinstallthefireplacehoodaccessory(24"and
30" models only). Even if noncombustible material is more than
12", you may need the hood accessory to deflect heat away from
your mantel shelf. See Figure 6 and Figures 7 and 8 on 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.
Heat Resistant
Material (A)
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 below.
You must have noncombustible material(s) above the fireplace
opening. Noncombustible materials (such as slate, marble, tile,
etc.)mustbeatleast1/2inchthick.Withsheetmetal,youmusthave
noncombustiblematerial behindit. Noncombustiblematerial must
extend at least 8" up (for all models). If noncombustible material is
lessthan12",youmustinstallthefireplacehoodaccessory(24"and
30" models only). See Figure 6 for minimum clearances.
IMPORTANT: Ifyoucannotmeettheseminimumclearances,you
must operate heater with chimney flue damper open. Go to Install-
ing Damper Clamp Accessory for Vented Operation, page 10.
Noncombustible Requirements for
Material Distance (A) Safe Installation
12" or more Noncombustible material okay.
Between 8" and 12" 24" or 30" Models: Install
fireplace hood accessory
(GA6050, GA6052, or
GA6053 see Accessories,
page 28).
18" Model: Noncombustible
material okay.
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.
Figure 6 - Heat Resistant Material (Slate, Marble, Tile, etc.)
Above Fireplace
*Minimum 16 inches from Side Wall
*
Example
INSTALLATION
Installation and Clearances for Vent-Free Operation (Cont.)

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9
Figure 7 - Minimum Mantel Clearances Without Using Hood
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" Models
18" Model
2
1/2
"
6"
8"
10"
MANTEL CLEARANCES
In addition to meeting noncombustible material clearances, you
must also meet required clearances between fireplace opening and
mantel shelf. If you do not meet the clearances in Figure 7, you will
need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between mantel shelf and top of
fireplace opening, a hood is not required (see Figure 7).
INSTALLATION
Continued
FLOOR CLEARANCES
A. If installing appliance on the floor level, you must maintain
the minimum distance of 14" to combustibles (see Figure 9).
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 10).
Determining Minimum Mantel Clearance When
Using a Hood
If minimum clearances in Figure 7 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
8 when using hood.
14"
Min.
Combustible
Material
Noncombustible
Material
Hearth
5"
Min.
Combustible
Material
Figure 10 - Minimum Fireplace Clearances Above Combus-
tible Flooring
Figure 8 - Minimum Mantel Clearances When Using Hood
Minimum Non-
Combustible
Material 8"
Min. 12" 15" 18"
All minimum
distances are
in inches
Log Set
18", 24", 30"
Models
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
Figure9-MinimumFireplaceClearancesifInstalledatFloorLevel
(GA6050, GA6052,
and GA6053)
All Models
NOTICE: If your installation does not meet the mini-
mum 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
NOTICE:Surfacetemperatures 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.
INSTALLATION
Mantel Clearances
Floor Clearances

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10
INSTALLING HEATER BASE ASSEMBLY
WARNING:Ifinstallinginasunkenfireplace,special
care is needed. You must raise the fireplace floor to
allow access to heater control panel. This will insure
adequate air flow and guard against sooting and con-
trols being damaged. Raise fireplace floor with non-
combustible material. Make sure material is secure.
CAUTION: Do not pick up heater base assembly
bytheburner.Thiscoulddamageheater.Onlyhandle
base assembly by grates.
IMPORTANT: Make sure the heater burners are level. If heater is
not level, heater will not work properly. For thermostat models,
avoid damage to thermostat bulb. Avoid nicks or sharp bends in
thermostat bulb wire. Keep thermostat bulb in mounting bracket
until ready to mount base to floor. See Optional Positioning Of
Thermostat Sensing Bulb, page 25.
Installation Items Needed
• hardware package (provided with heater)
• approvedflexiblegashose(notprovided) (ifallowedbylocalcodes)
• sealant resistant to propane (propane/LP) gas, not provided
• electric drill with 3/16" drill bit
• flathead screwdriver
1. Apply pipe joint sealant lightly to male threads of the fitting to
be threaded into gas regulator. Connect approved flexible gas
hose to gas regulator of heater (see Figure 12).
IMPORTANT: Hold gas regulator with wrench when
connecting flexible gas hose.
2. Locate masonry screws in hardware package.
3. Position heater base assembly in fireplace.
4. Place logs in their proper position on heater base, see Installing
Logs on pages 13 through 17.
5. Center heater base and logs front-to-back and side-to-side in
fireplace.
6. Carefully remove logs without moving heater base.
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.
INSTALLATION
Continued
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.
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 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,page26).Thiswillinsurevented
operation(seeFigure11).Thedamperclamp will 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
CAUTION:Donotremovethedataplatesattached
to the heater base assembly. The data plates contain
important warranty and safety information.
INSTALLATION
Installing Damper Clamp Accessory for Vented Operation
Installing Heater Base Assembly
Figure 11 - Attaching Damper Clamp
Manufactured FireplaceMasonry Fireplace
Damper
Damper Clamp
Damper
Damper Clamp
Damper

111160-01A
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11
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 heater directly to the
propane/LP supply. This heater requires an external
regulator(notsupplied).Installtheexternalregulator
between the heater and propane/LP supply.
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
Figure12-AttachingFlexibleGasHosetoHeaterGasRegulator
INSTALLATION
Continued
7. Mark screw locations through holes in mounting brackets (see
Figure 13 and 14). If installingin abrick-bottom fireplace,mark
screw locations in mortar joint of bricks.
8. Remove heater base from fireplace.
9. Drill holes at marked locations using 3/16" drill bit.
10. Attach base assembly to fireplace floor using two masonry
screws (in hardware package) (see Figure 13 or 14).
Figure 13 - Attaching Base Assembly to Fireplace Floor - Dual
Burner Model
Figure14-AttachingBaseAssemblytoFireplaceFloor-Single
Burner Model
Heater Gas
Regulator
Flexible Gas Hose
(if allowed by local
codes)
Fitting
Masonry
Screw
Mounting
Bracket
INSTALLATION
Installing Heater Base Assembly (Cont.)
Connecting to Gas Supply
Masonry
Screw
Mounting
Bracket
CONNECTING TO GAS SUPPLY
Installation Items Needed
Beforeinstallingheater,makesureyouhave 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 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 26.
Forpropane/LPunits,theinstallermustsupplyanexternalregulator.
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
couldoccur. Install externalregulatorwith the ventpointingdown as
shown in Figure15, page 12. Pointing thevent downprotects itfrom
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.

111160-01A
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CAUTION: Avoid damage to regulator. Hold gas
regulator with wrench when connecting it to gas
piping and/or fittings.
Figure 16 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, page 26.
** Minimum inlet pressure for purpose of input adjustment.
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 equipment shutoff valve from gas supply piping sys-
tem. 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 by either opening propane/LP supply
tankvalve for propane/LPgas oropening main gasvalve located
on or near gas meter for natural gas, or using compressed air.
4. Check all joints of gas supply piping system.Apply a noncor-
rosive 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.
WARNING: Never use an open flame to check for
aleak.Applyanoncorrosiveleakdetectionfluidtoall
joints.Bubblesformingshowaleak.Correctallleaks
at once.
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
CAUTION: Makesure external regulatorhas been
installedbetweenpropane/LPsupplyandheater.See
guidelinesunder ConnectingtoGasSupply ,page11.
CHECKING GAS CONNECTIONS
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 16).
IMPORTANT: Install equipment valve in an accessible location.
Theequipmentshutoffvalveisforturningonor 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.
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 trapwhere trappedmatter isnot likelyto 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.
WARNING:Use pipejointsealantthat is resistant
to liquid petroleum (LP) gas.
INSTALLATION
Continued
Cap
3" Minimum
Sediment Trap
Gas
Regulator
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible Gas
Hose (if allowed by
local codes)
Tee Joint
Pipe Nipple
INSTALLATION
Connecting to Gas Supply (Cont.)
Checking Gas Connections
Figure 15 - External Regulator With Vent Pointing Down
Propane/LP
Supply Tank External
Regulator
Vent Pointing
Down
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)

111160-01A
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13
INSTALLATION
Continued
ON
POSITION
OFF
POSITION
Figure 17 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 18 - Checking Gas Joints (Propane/LP Gas Models)
Equipment
Shutoff Valve
Propane/LP
Supply Tank
Thermostat Gas Valve or
Control Valve Location
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-
catedon or neargasmeter for naturalgas,or usingcompressedair.
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 from equipment shutoff valve to thermostat
gas valve (Thermostat-Controlled Models), to control valve
(Manually-Controlled Models), or to gas control (Remote-
Ready Models)(see Figures 18 and 19). Apply noncorrosive
leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
WARNING: Failure to position the parts in accor-
dancewiththesediagramsorfailuretouseonlyparts
specifically approved with this heater may result in
property damage or personal injury.
INSTALLING LOGS
Each log is marked with a number. These numbers will help you
identify the log when installing. It is very important to install these
logs exactly as instructed. Do not modify logs. Only use logs
supplied with heater.
1. Locate pins on the bottom of back log (#1). Slide these pins
into the holes in the grate base behind the burner (see Figure
20, page 14).
2. Place the base of the middle log (#2) in the U-shaped slots of
the grate base in front of the back log. The cutout on the right
of the middle log should fit over the burner (see Figure 21,
page 14). Make sure the front of the middle log is resting on
the tabs of the grate base and the cutout area is centered over
the burner “U” bend.
Dual Burner Smoky Mountain Oak Models
CGD3018PT/NT, CGD3924PT/NT
CAUTION:Afterinstallationandperiodicallythere-
after,checktoensurethatnoflamecomesincontact
with any log. With the heater set to HI, check to see
if flames contact any log. If so, reposition logs
according to the log installation instructions in this
manual. Flames contacting logs will create soot.
INSTALLATION
Checking Gas Connections (Cont.)
Installing Logs
6. Light heater (see Operating Heater, pages 17 and 19 [manu-
ally-controlled models] or pages 19 and 20 [thermostatically-
controlled models]). Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appliance, page 18
[manually-controlledmodels] or page20 [thermostatically-con-
trolled models]).
Figure 19 - Checking Gas Joints (Natural Gas Models)
Gas Meter
Equipment
Shutoff Valve
Thermostat Gas Valve or
Control Valve Location

111160-01A
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Dual Burner Biltmore Split Oak Models
CCL3018PTA/NTA, CCL3924PTA/NTA,
CCL3930PTB/NTB
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 thatnoflame comes incontact
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.
Eachlogismarkedwithanumber.Thesenumberswillhelpyouidentify
the log when installing. It is very important to install these logs exactly
as instructed. Do not modify logs. Only use logs supplied with heater.
1. Place the front log (#1) on the grate fingers. Make sure the
front log rests firmly between the grate fingers and the grate
base (see Figure 24).
Figure 24 - Installing Front Log #1 (CCL3930PTB/NTB Shown)
Front Log (#1)
Grate
Fingers
Grate Base
INSTALLATION
Continued
Figure 21 - Installing Middle Log (#2)
Figure 22 - Installing Front Log (#3)
Figure 23 - Installing Crossover Log (#4)
Burner
Crossover Log (#4)
Notches
Rectangular
Knobs
Cutout
Tab
U-Shaped Slot
Middle Log (#2)
“U”Bend
3
Front
Log (#3)
Post
Post
Recess
3. Locate the recesses on the back of the front log (#3). Fit these
recesses between the posts of the grate base (see Figure 22).
4. Locate the notchesin thebottom of thecrossover log(#4). Place
the crossover log on top of the middle log and front log. Make
sure the notches of the crossover log lines up with rectangular
knobs on top of the middle and front logs (see Figure 23).
5. Place lava rock around base of heater if desired. Do not put
lava rock on logs on burner.
INSTALLATION
Installing Logs (Cont.)
Figure 20 - Installing Back Log (#1)
Pin
Hole in Grate
Base
Back Log
(#1)
Burner

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15
INSTALLATION
Continued
Figure 25 - Installing Middle Log #2 (CCL3930PTB/NTB Shown)
Figure 26 - Installing Rear Log #3 (CCL3930PTB/NTB Shown)
Figure 27 - Installing Crossover Log #4 (CCL3930PTB/NTB
Shown)
Middle Log (#2)
Tab
Burner
U-Shaped Slot
Hole in Grate
Base
Pins
Burner
Middle Log
(#2) Back
Log (#3)
Pins Crossover Log (#4)
INSTALLATION
Installing Logs (Cont.)
2. Place the base of the middle log (#2) in the U-shaped slots of the
grate base. The cutout on the right of the middle log should fit
overthe burner(see Figure25).Make sure the front of the middle
log is resting on the tabs of the grate base.
3. Locatepinsonthebottom of back log(#3).Slidethese pins into the
holes in the grate base behind the burner (see Figure 26).
4. Locate holes on the bottom of crossover log (#4). Slide front
hole onto the left pin (CCL3924PTA/NTA or CCL3930PTB/
NTB) or middle pin (CCL3018PA/NAor CCL3018PTA/NTA)
on the middle log (#2) and the pin on the back log (#3). See
Figure 27 for placement.
5. For CCL3924PTA/NTA and CCL3930PTB/NTB Only: Locate
pin and hole on the bottom of crossover log (#5). Slide the pin
into the hole located in crossover log (#4). Slide the hole onto
the pin on front log (#1). See Figure 28.
ForCCL3018PA/NA and CCL3018PTA/NTA Only:Locateholes
on the bottom of crossover log (#5). Slide the holes over the left
pins on middle log (#2) and front log (#1). See Figure 29.
Figure 28 - Installing Crossover Log #5 (CCL3930PTB/NTB
Shown)
Crossover Log (#4)
Front Log (#1)
Crossover
Log (#4)
Front Log (#1)
Figure 29 - Installing Crossover Log #5 (CCL3018PA/NA and
CCL3018PTA/NTA Only)
Crossover Log (#5)
Crossover
Log (#5)
Rear Log
(#3)
Middle Log (#2)

111160-01A
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Single Burner Seasonal Oak Models
CRL2718P/N, CRL2718P/N
WARNING: Failure to position the parts in accor-
dance with these diagrams or failure to use only parts
specifically approved with this heater may result in
property damage or personal injury.
TheSeasonalOakLogSetisareversiblelogset.Thismeansthatthe
twobottom logs may be turned to face either direction. The top log,
however, must remain in the same position. Do not modify logs.
Only use logs supplied with heater.
1. Place the back log onto the back of the base assembly. Make
sure log sits forward against the two posts in front of log (see
Figure 32). This log may be turned to face either direction.
2. Place front log onto grate on front of base assembly. The log
will fit down between grate fingers and posts on front of base
assembly (see Figure 33, page 17). This log may be turned to
face either direction.
3. Place the crossover log on top of the back log and front log
making sure pins are inserted into holes on top of logs 1 and 2
(see Figure 34, page 17). This log must be placed as shown in
Figure 34 on page 17 or the pins will not seat into holes.
4. Add lava rock around base of heater if desired. Do not put lava
rock on logs or burner.
Figure 32 - Installing Back Log
Back Log
Post
Post
Base
Assembly
INSTALLATION
Continued
7
6
Figure 30 - Installing Crossover Log #6 (CCL3930PTB/NTB
Shown)
Figure 31 - Installing Crossover Log #7 (Model CCL3930PTB/
NTB Only)
Pins
Middle
Log (#2)
Front Log (#1)
Middle
Log (#2)
Crossover
Log (#6)
Holes
Pins
INSTALLATION
Installing Logs (Cont.)
6. Locate holes on the bottom of crossover log (#6). Slide these
holes onto the right pins located in middle log (#2) and front
log (#1). See Figure 30.
7. For CCL3930PTB/NTB only: Locate holes on the bottom of
crossover log (#7). Slide onto the pins located in crossover log
(#6) and middle log (#2). See Figure 31.
8. Add lava rock around base of heater if desired. Do not place
any lava rock on logs or burner.
Crossover
Log (#6)
Crossover
Log (#7)

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17
INSTALLATION
Installing Logs (Cont.)
OPERATING HEATER (Manually-Controlled Models )
Figure 33 - Installing Front Log
Front Log
Grate
Fingers
Figure 34 - Installing Crossover Log
Post
INSTALLATION
Continued
Post
Base
Assembly
Crossover Log
Hole in Back Log
Hole in
Front Log
OPERATING HEATER
FOR YOUR SAFETY
READ BEFORE LIGHTING
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. Useonlyyourhandtopush in or turnthe gascontrol knob.
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.
WARNING
•If fireplace has glass doors, never operate this
heaterwithglassdoorsclosed.Ifyouoperateheater
withdoors closed, heatbuildup inside fireplacewill
cause glass to burst. Make sure there are no ob-
structions across openings of fireplace.
•Youmustoperatethisheaterwithafireplacescreen
in place. Make sure fireplace screen is closed
before running heater.
NOTICE:Duringinitialoperationofnewheater,burning
logs will give off a paper-burning smell. Orange flame
will also be present. Open damper or window to vent
smell. This will only last a few hours.
LIGHTING
INSTRUCTIONS
MANUALLY-CONTROLLED MODELS

111160-01A
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TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Press in and turn control knob clockwise
Clockwise
to the
HI position.
2. Turn control knob clockwise
Clockwise
to the pilot position.
3. Press in control knob and turn clockwise
Clockwise
to the
OFF position.
Shutting Off Burner(s) Only (pilot stays lit)
1. Turn control knob clockwise
Clockwise
to the HI position.
2. Press in and turn control knob clockwise
Clockwise
to the
pilot position.
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
The variable control valve can be set to any heat setting and
flame height desired, by simply turning the control knob until
that setting is attained. Even the lowest setting provides realis-
tic, dancing yellow flames. Selecting higher settings produces
greater heat output. This results in increased heating comfort.
VARIABLE CONTROL
OPERATION
WARNING:Donot operate heater between PILOT
and HI positions.
6. With control knob pressed in, press and release ignitor but-
ton. This will light pilot. The pilot is attached to the burner.
If needed, keep pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
light pilot withmatch.To light pilot with match, see Manual
Lighting Procedure, page 19.
7. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob.
Note: If pilot goes out, repeat steps 3 through 7. If control
knob does not pop out when released, contact a qualified
service person or gas supplier for repairs.
8. Slightly depress and turn control knob counterclockwise
C-clockwise
todesiredheatinglevel.Theburner(s)shouldlight.
Set control knob to any heat level between HI and LO.
Figure 35 - Control Knob and Ignitor Button Location
PILOT
OFF
LO
HI
Ignitor Button
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 HI 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.
WARNING: Damper handle will be hot if heater
has been running.
Control Knob
1. STOP! Read the safety information in column 2, page 17.
2. Make sure equipment shutoff valve is fully open.
3. Press in and turn control knob clockwise
Clockwise
to the
OFF position.
4. 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 2 on page 17. If
you don’t smell gas, go to the next step.
5. Slightly depress and turn control knob counterclockwise
C-clockwise
to thePILOTposition.Pressin controlknobforfive
(5) seconds (see Figure 35).
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.
Figure 36 - Pilot
Thermocouple
Pilot Burner
Ignitor
Electrode
OPERATING HEATER (Manually Controlled Models)
Lighting Instructions (Cont.)
Variable Control Operations
To Turn Gas Off to Appliance
OPERATING HEATER
Continued

111160-01A
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19
19
1. Follow steps 1 through 5 under Lighting Instructions, page
18.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
step 8, under Lighting Instructions, column 2 on page 18.
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. Useonlyyourhandtopush in or turnthe gascontrol knob.
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.
MANUAL LIGHTING
PROCEDURE
OPERATING HEATER
Continued
FOR YOUR SAFETY
READ BEFORE LIGHTING
OPERATING HEATER (Manually Controlled Models)
Manual Lighting Procedure
OPERATING HEATER (Thermostatically-Controlled Models)
For Your Safety Read Before Lighting
1. STOP! Read the safety information, column 1.
2. Make sure equipment shutoff valve is fully open.
3. Turn control knob clockwise
Clockwise
to the OFF position.
4. 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.
5. Turn control knob counterclockwise
C-clockwise
to the PI-
LOT position. Press in control knob for five (5) seconds
(see Figure 37, page 20).
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.
• If control knob does not pop out when released, contact
a qualified service person or gas supplier for repairs.
WARNING
•If fireplace has glass doors, never operate this
heaterwithglassdoorsclosed.Ifyouoperateheater
withdoors closed, heatbuildup inside fireplacewill
cause glass to burst. Make sure there are no ob-
structions across openings of fireplace.
•Youmustoperatethisheaterwithafireplacescreen
in place. Make sure fireplace screen is closed
before running heater.
NOTICE:Duringinitialoperationofnewheater,burning
logs will give off a paper-burning smell. Orange flame
will also be present. Open damper or window to vent
smell. This will only last a few hours.
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 HI 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.
LIGHTING
INSTRUCTIONS
WARNING: Damper handle will be hot if heater
has been running.
THERMOSTAT-CONTROLLED MODELS

111160-01A
For more information, visit www.desatech.com
For more information, visit www.desatech.com
20
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 39 shows a correct pilot flame pattern. Figure 40 shows an
incorrectpilotflamepattern.Theincorrectpilotflameisnottouching
thethermocouple.Thiswillcausethethermocoupletocool.Whenthe
thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 40
• turn heater off (see To Turn Off Gas to Appliance, page 18
[manually-controlled models] or column 1 [thermostat-con-
trolled models])
• see Troubleshooting, pages 22 through 24
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.
Figure 39 - Correct Pilot
Flame Pattern Figure 40 - Incorrect Pilot
Flame Pattern
Thermocouple
Pilot Burner
Thermocouple
Pilot Burner
THERMOSTAT
CONTROL OPERATION
The thermostat control knob can be set to any comfort level
between HI and LO. The thermostat will gradually modulate the
heat output and flame height from higher to lower settings, or
pilot, in order to maintain the comfort level you select. The ideal
comfortsettingwillvarybyhouseholddependingupontheamount
ofspacetobeheated,theoutputofthecentralheatingsystem,etc.
Note: Selecting theHI settingwith thecontrol knobwill cause the
burnerstoremainfullyon,withoutmodulatingdowninmostcases.
1. Follow steps 1 through 5 under Lighting Instructions,
page 19.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
step 8, under Lighting Instructions, column 1.
MANUAL LIGHTING
PROCEDURE
Figure 37 - Control Knob and Ignitor Button Location
Figure 38 - Pilot
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
LO
HI
OFF
Pilot
Control Knob
Ignitor Button
OPERATING HEATER
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise
Clockwise
to the OFF position.
Shutting Off Burners Only (pilot stays lit)
Turn control knob clockwise
Clockwise
to the PILOT position.
Thermocouple
Pilot Burner
Ignitor Electrode
6. With control knob pressed in, press and release ignitor but-
ton. This will light pilot. The pilot is attached to the front
burner.Ifneeded,keeppressingignitorbuttonuntilpilotlights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
light pilot withmatch.To light pilot with match, see Manual
Lighting Procedure.
7. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob.
Note: If pilotgoes out,repeatsteps3through7.Thisheater
has a safety interlock system. Wait one (1) minute for sys-
tem to reset before lighting pilot again.
8. Turn control knob counterclockwise
C-clockwise
to desired
heating level.The burners should light. Set control knob to
any heat level between HI and LO.
OPERATING HEATER (Thermostatically-Controlled Models)
Lighting Instructions (Cont.)
To Turn Off Gas to Appliance
Thermostat Control Operation
Manual Lighting Procedure
INSPECTING BURNERS
Pilot Flame Pattern