Desa EFS33NR Quick start guide

UNVENTED (VENT-FREE) GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
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This appliance may be installed in an aftermarket,* 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
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fire department.
— Installation and service must be performed by a
qualifiedinstaller,serviceagency,orthegassupplier.
WARNING: Improper installa-
tion,adjustment,alteration,ser-
vice, or maintenance can cause
injury or property damage. Re-
fer to this manual for correct
installationandoperationalpro-
cedures. For assistance or ad-
ditional information consult a
qualified installer, service
agency, or the gas supplier.
WARNING: This is an unvented
gas-fired heater. It uses air (oxy-
gen) from the room in which it is
installed.Provisionsforadequate
combustion and ventilation air
mustbeprovided.Referto Airfor
Combustion and Ventilation sec-
tion on page 4 of this manual.
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Shown with optional
cabinet mantel,
hearth base, and trim
accessories.
EFS33NR
EFS33PR
VSGF33NR
VSGF33PR
Remote-Ready
Fireplace System
TM
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TABLE OF CONTENTS
SAFETY INFORMATION
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 for reference. It is your guide to safe and proper operation
of this heater.
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 fireplace.
WARNING: Do not allow fans toblowdirectly 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.
Fireplace front and screen become very hot when
running fireplace. Keep children and adults away
fromhotsurfacestoavoidburnsor clothing ignition.
Fireplace will remain hot for a time after shutdown.
Allow surfaces to cool before touching.
Carefully supervise young children when they are in
the room with fireplace. When using the optional
hand-heldremoteaccessory,keep selectorswitchin
the OFF position to prevent children from turning on
burners with remote.
You must operate this fireplace with the fireplace
screenandhoodinplace.Makesurefireplacescreen
and hood are in place before running heater.
Keeptheappliancearea clear and free from combus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
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 FIREPLACE ........................................................ 15
INSPECTING BURNERS.......................................................... 18
CLEANING AND MAINTENANCE ............................................ 19
TROUBLESHOOTING .............................................................. 20
WIRING DIAGRAM ................................................................... 23
SPECIFICATIONS .................................................................... 23
REPLACEMENT PARTS .......................................................... 23
SERVICE HINTS....................................................................... 23
TECHNICAL SERVICE ............................................................. 23
ILLUSTRATED PARTS BREAKDOWN
AND PARTS LIST .................................................................. 24
ACCESSORIES ........................................................................ 28
OWNER’S REGISTRATION FORM.......................................... 31
WARRANTY INFORMATION...................................... Back Cover

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Optional
Blower
Assembly
(Not
Included)
AUTO
ON
OFF
COOLER
WARMER
TEMP
Rear
Log
Optional Remote Control
Rear
Burner
Crossover
Log
Middle Log
Front Log
Front
Burner
Top Louver
Assembly
Fireplace
Hood
Bottom
Louver
Assembly
Screen
Assembly
Top Outer
Casing
Firebox
Support
SAFETY INFORMATION
PRODUCT IDENTIFICATION
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/LP supplytank(s) outdoors(propane/LP unitsonly).
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 fireplace shall not be installed in a bedroom or bathroom.
5. Do not use this fireplace as a wood-burning fireplace. Use only
the logs provided with the fireplace.
6. Do not add extra logs or ornaments such as pine cones, ver-
miculite,orrockwool. Using these addeditemscancause soot-
ing. Do not add lava rock around base. Rock and debris could
fall into the control area of fireplace.
7. To prevent thecreationof soot, followtheinstructions in Clean-
ing and Maintenance, page 19.
8. 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.
9. This fireplace needs fresh air ventilation to run properly. This
fireplace has an Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the fireplace if enough
fresh air is not available. See Air for Combustion and Ventila-
tion, pages 4 through 6. If fireplace keeps shutting off, see
Troubleshooting, pages 20 through 23.
10. Do not run fireplace
• where flammable liquids or vapors are used or stored
• under dusty conditions
11. Do not use this fireplace to cook food or burn paper or other
objects.
12. Do not use fireplace if any part has been exposed to or under
water. Immediately call a qualified service technician to in-
spect the fireplace and to replace any part of the control sys-
tem and any gas control which has been under water.
13. Do not operate fireplace if any log is broken. Do not operate
fireplace if a log is chipped (dime-sized or larger).
14. Turn fireplace off and let cool before servicing. Only a quali-
fied service person should service and repair fireplace.
15. Operating fireplace above elevations of 4,500 feet could cause
pilot outage.
16. To prevent performance problems in propane/LP units, do not
use propane/LP fuel tanks of less than 100 lbs. capacity (pro-
pane/LP units only).
17. Provide adequate clearances around air openings.
PRODUCT IDENTIFICATION
Figure 2 - Fireplace (VSGF33NR Shown)
Figure 1 - Log Base Assembly (VSGF33NR Shown)

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LOCAL CODES
Install and use fireplace 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.
UNPACKING
CAUTION: Do not remove the metal data plates
attachedtotheheaterbaseassembly.Thedataplates
contain important warranty and safety information.
LOCAL CODES
UNPACKING
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
1. With utility knife, cut the carton all the way around above the
staples on the bottom tray. Lift the carton off the heater. Re-
move packing. Note: The hood is located in the packing on
the right hand side of the heater front. Lift the heater off the
bottom tray.
2. Locate two screws above top corners of the fireplace screen.
Remove and discard these screws. Lift fireplace screen up and
pull out to remove.
3. Remove protective packaging applied to logs, log base assem-
bly, and fireplace.
4. Remove fireplace hood from carton insert.
5. Check allitemsfor any shippingdamage.Ifdamaged, promptly
inform dealer where you bought fireplace.
PRODUCT FEATURES
OPERATION
This vent-free fireplace is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a chimney. Heat is
generated by both realistic flames and glowing embers. When used
without the optional blower, the fireplace requires no electricity
making it ideal for emergency backup heat.
SAFETY DEVICE
Thisfireplacehas apilotwith anOxygenDepletion Sensing(ODS)
safety shutoff system. The ODS is a required feature for vent-free
room heaters. The ODS system shuts off the fireplace if there is not
enough fresh air.
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New
materials,increasedinsulation, and newconstructionmethods help
reduce heat loss in homes. Home owners weather strip and caulk
aroundwindowsand doors tokeepthe coldairout andthewarm air
in. During heating months, home owners want their homes as
airtight as possible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
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-
tions to insure proper fresh air for this and other
fuel-burning appliances in your home.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system requires no matches,
batteries, or other sources to light fireplace.
OPTIONAL REMOTE CONTROL ACCESSORY
There are four optional remote controls (not included) that can be
purchased separately for this log heater:
• wall switch
• wall thermostat
• hand-held ON/OFF remote
• hand-held thermostat remote
See Accessories, pages 28 through 30.
OPTIONAL BLOWER ASSEMBLY
ACCESSORY
This fireplace accepts an optional blower assembly (not included).
The GA3700TA Series blower operates thermostatically and fea-
tures a variable speed control. The GA3700 Series operates manu-
allyandalsofeaturesavariablespeedcontrol.Theblowercirculates
heated air from the fireplace into the room. Use of blower is
optional. See Accessories, pages 28 through 30.

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AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation
Determining Fresh-Air Flow for Heater Location
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 ceilingsexposedtotheoutside 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
c. caulking or sealants are applied to areas such as
joints around window and door frames, between sole
platesand floors,betweenwall-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 .
Ifyourhomedoes not meet all of the three criteriaabove,
proceed to Determining Fresh-Air Flow For Heater Loca-
tion, column 2.
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,areconsideredapartofthe unconfinedspace.
* 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
Usethiswork sheetto determineif youhaveaconfined or unconfinedspace.
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 toadjoining 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: 3,168 cu. ft. (volume of space) x 20 = 63,360 (maximum
Btu/Hr the space can support)
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: 63,360 Btu/Hr (maximum the space can support)
73,000 Btu/Hr (actual amount of Btu/Hr used)
40,000
33,000
73,000
AIR FOR COMBUSTION AND
VENTILATION
Continued

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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.These spacesincludeattics
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.
AIR FOR COMBUSTION AND VENTILATION
Determining Fresh-Air Flow for Heater Location (Cont.)
Ventilation Air
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 .
The space in the example on page 5 is a confined space because the actual
Btu/Hr used is more than the maximum Btu/Hr the space can support. You
must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the
extra space provides an unconfined space, remove door to adjoining
roomor addventilation grillsbetweenrooms. SeeVentilationAir From
Inside Building.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors.
C. Installa lower Btu/Hrheater, if lowerBtu/Hrsize makes roomunconfined.
Iftheactual Btu/Hrused islessthanthe maximumBtu/Hr thespace cansupport,
thespaceisanunconfinedspace.Youwillneednoadditionalfreshairventilation.
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
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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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INSTALLATION
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 fireplace. Follow all local codes.
WARNING: Never install the fireplace
•in a bedroom or bathroom
•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 fireplace creates warm air cur-
rents.Thesecurrentsmoveheattowallsurfacesnext
to fireplace. Installing fireplace next to vinyl or cloth
wall coverings or operating heater where impurities
(suchas,butnotlimited,totobaccosmoke,aromatic
candles, cleaning fluids, oil or kerosene lamps, etc.)
in the air exist, may discolor walls or cause odors.
INSTALLATION
Check Gas Type
Electrical Hookup
Installing Hood
Note: Your fireplace is designed to be used in zero clearance
installations.Wallorframingmaterialcanbeplaceddirectlyagainst
any exterior surface on the rear, sides, or top of your fireplace,
except where standoff spacers are integrally attached. If standoff
spacers are attached to your fireplace, these spacers can be placed
directly against wall or framing materials.
Use the dimensions shown for rough openings to create the easiest
installation. See Built-In Fireplace Installation, pages 10 and 11.
IMPORTANT: Vent-freeheatersadd moisturetotheair. Although
this is beneficial, installing fireplace in rooms without enough
ventilation air may cause mildew to form from too much moisture.
See Air for Combustion and Ventilation, pages 4 through 6.
IMPORTANT: Make sure the fireplace is level. If fireplace is not
level, log set will not work properly.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for your fireplace.
If your gas supply is not correct, do not install fireplace. Call dealer
where you bought fireplace for proper type fireplace.
ELECTRICAL HOOKUP
(Models GA3700 Series and GA3700T Series
Blower Accessories, and GA3555 Internal
Duplex Kit)
This fireplace accepts a blower assembly with an electrical cord.
The electrical cord is five feet in length. You must locate fireplace
withinreachofa120voltgroundedelectricaloutlet.Ifnot,youmust
installanelectricaloutlet within reach of fireplacepowercord.The
GA3555outletaccessorymaybeusedfor built-inapplicationswith
blower accessory installed.
INSTALLING HOOD
Install hood to rail already installed in fireplace as shown in Figure
5. Use 3 Phillips screws provided.
Figure 5 - Installing Hood
Screw
Hood Rail

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INSTALLATION
Continued
Figure7-AttachingBrassTrimtoFireplace(VSGF33NRShown)
Figure 6 - Assembling Brass Trim
ASSEMBLING AND ATTACHING OPTIONAL
BRASS TRIM
(Included with Mantel Accessory)
IMPORTANT: If you are recessing the firebox in a wall, do not
attach brass trim at this time. See Built-In Fireplace Installation,
pages 10 and 11.
Note: The instructionsbelowshowassembling and attachingbrass
trim to fireplace.
1. Remove packaging from three pieces of brass trim.
2. Locate four brass screws, two adjusting plates with set screws,
and two shims in the hardware packet.
3. Align shim under adjusting plate as shown in Figure 6.
4. Slide one end of adjusting plate/shim in slot on mitered edge
of top brass trim (see Figure 6).
5. Slide other end of adjusting plate/shim in slot on mitered edge
of side brass trim (see Figure 6).
6. While firmly holding edges of brass trim together, tighten both
set screws on the adjusting plate with slotted screwdriver.
7. Repeat steps 1 through 6 for other side.
8. Tighten trim hanging screws (#10 x 6.25 shoulder) into holes
in cabinets. Place the assembled trim onto fireplace cabinet.
Align hanging notches on trim with hanging screws on side of
fireplace (see Figure 7). Push trim firmly into place, sliding
hanging notches over hanging screws.
Side Brass
Trim Top
Brass
Trim
Slot
Mitered Edge
Slot
Shim
Set Screws
Adjusting
Plate
Trim
Hanging
Screws
Assembled
Brass Trim
Hanging
Notches
on Trim
INSTALLATION
Assembling and Attaching Optional Brass Trim
Installation Clearances
Conventional Fireplace Installation
INSTALLATION CLEARANCES
WARNING: Maintain the minimum clearances. If
you can, provide greater clearances from floor, ceil-
ing, and adjoining wall.
Carefully follow the instructions below. This will ensure safe
installation.
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 8.
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 8).
B. Clearances from the top of the fireplace opening to the ceiling
should not be less than 42 inches.
*Minimum 16 inches from Side Wall
Example
Figure 8 - Minimum Clearance for Combustible to Wall
CONVENTIONAL FIREPLACE INSTALLATION
Conventional installation of this fireplace involves installing fire-
placealongwiththecorner,face,orcabinetmantelwithhearthbase
accessories against a wall in your home. Follow the instructions in
this section to install the fireplace in this manner.
Note: The instructions in this section show installation using the
cabinet mantel and the G3333F/G3334U/G3004W/G3335F/
G3007U series hearth base accessories. The hearth base accessory
shown is optional for this installation. You can install fireplace and
*
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top Left and Bottom
Right Sides and Rear
0" 16" 0"

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cabinet/corner mantel directly on the floor. The corner mantel
accessory cannot be installed with the G3333F/G3334U/G3004W/
G3335F/G3007Uhearthbase.Thecornermantelcanbepairedwith
the G3008F/G3009U/G3010F corner hearth base. If mounting
fireplace and cabinet or corner mantel to the floor, an optional
G3005J/3005S/3005B Slim Base kit may be installed.
1. Assemble cabinet mantel, hearth base, and trim accessories.
Assembly instructions are included with each accessory.
2. When installing blower, install a properly grounded, 120 volt
three-prong electrical outlet at fireplace location if an outlet is
not there. If possible, locate outlet so cabinet mantel will cover
it when installed (see Figure 9).
3. Install gaspipingto fireplace location.This installationincludes
an approved flexible gas line (if allowed by local codes) after
the equipment shutoff valve. The flexible gas line must be the
last item installed on the gas piping. See Installing Gas Piping
to Fireplace Location, pages 11 and 12.
4. Place hearth base accessory against wall at installation loca-
tion. Cut an access hole in hearth top to run flexible gas line to
fireplace (see Figure 9). Make sure to locate access hole so
cabinet mantel will cover it when installed. Note: You can
secure base to floor using wood screws. Countersink screw
heads and putty over.
5. Route flexible gas line through access hole in hearth base.
6. Center cabinet mantel on hearth base (see Figure 10). Make
sure mantel is flush against wall.
7. Break off nailing flanges (see Figure 11) with hammer or pliers.
8. Place cardboard or other protective material on top of hearth
base. Carefully set fireplace on protective material, with back
of fireplace inside mantel opening.
9. Attach flexible gas line from fireplace gas regulator to gas sup-
ply. See Connecting Fireplace to Gas Supply, page 12.
10. If blower is installed, route blower electrical cord through ac-
cess holes in either side of fireplace. Note: Bushing may be
moved if necessary. Plug electrical cord into electrical outlet.
11. Carefully insert fireplace into cabinet mantel. Be careful not
to scratch or damage hearth base, cabinet mantel, or any lami-
nate trim on hearth base. Remove protective material from top
of hearth base and from front of fireplace (if any). Note: You
can secure fireplace to hearth or floor. Open lower louver.
Locate screw holes in bottom of base. Tighten wood screws
through these holes and into hearth or floor.
12. Check all gas connections for leaks. See Checking Gas Con-
nections, page 13.
INSTALLATION
Continued
INSTALLATION
Conventional Fireplace Installation (Cont.)
Figure 10 - Installing Cabinet Mantel
Figure 12 - Inserting Fireplace Into Cabinet Mantel
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Figure 11 - Location of Nailing Flanges
Cabinet
Mantel
Nailing
Flanges
Figure 9 - Placing Hearth Base Accessory Against Wall
Electrical
Outlet
Hearth
Base
Rigid Pipe and Gas
Shutoff Valve
Gas Line
Access
Hole

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INSTALLATION
Continued
INSTALLATION
Built-In Fireplace Installation
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
BUILT-IN FIREPLACE INSTALLATION
Built-in installation of this fireplace involves installing fireplace
into a framed-in enclosure. This makes the front of fireplace flush
withwall.Ifinstallingamantelabovethefireplace,youmustfollow
theclearancesshownin Figure16,page 11. Followtheinstructions
below to install the fireplace in this manner.
1. Frame in rough opening. Use dimensions shown in Figure 13
for the rough opening.If installing in a corner, use dimensions
shown in Figure 14 for the rough opening. The height is 33"
which is the same as the wall opening above.
2. If using blower, install and properly ground GA3555, three-
prong 120 volt electrical outlet, in fireplace. Follow instruc-
tions included in kit.
3. Install gas piping into fireplace location. This installation in-
cludes an approved flexible gas line (if allowed by local codes)
after the equipment shutoff valve. The flexible gas line must
be the last item installed on the gas piping. See Installing Gas
Piping to Fireplace Location, pages 11 and 12.
4. Carefully set fireplace in front of rough opening with back of
fireplace inside wall opening.
5. Carefully insert fireplace into rough opening.
6. Attach flexible gas line to gas supply. See Connecting Fire-
place to Gas Supply, page 12.
7. Attach fireplace to wall studs using nails or wood screws
through holes in nailing flange (see Figure 15).
8. Check all gas connections for leaks. See Checking Gas Con-
nections, page 13.
9. Plug electrical cord into electrical outlet installed in step 2.
10. Install brass trim after final finishing and/or painting of wall
(see Figure 7, page 8).
Figure 13 - Rough Opening for Installing in Wall
Figure 14 - Rough Opening for Installing in Corner
Figure 15 - Attaching Fireplace to Wall Studs
35
1
/ 2 "
17
3
/ 4 "
33"
39 3 / 8"27 7
/ 8"
55 5
/ 8"
35 1
/ 2"
Nailing Flanges
Nails or
Wood
Screws
Mantel Clearances for Built-In Installation
Ifplacingmantel above built-infireplace,you must meetminimum
clearance between mantel shelf and top of fireplace opening.
NOTICE: If your installation does not meet the mini-
mum clearances shown, you must do one of the
following:
•raise the mantel to an acceptable height
•remove the mantel

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13" 16" 19" 21"
2 1/2"
6"
8"
10"
Minimum Non-
Combustible
Material
Figure 16 - Minimum Mantel Clearances for Built-In Installation
Mantel
Shelf
Note:
All Vertical mea-
surements are from
top of fireplace
opening to bottom
of mantel shelf.
INSTALLATION
Continued
NOTICE:Surfacetemperaturesofadjacentwalls 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.
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 fireplace to gas supply. Follow all local codes.
CAUTION: Never connect propane/LP fireplace
directly to the propane/LP supply. This fireplace
requires an external regulator (not supplied). Install
the external regulator between the fireplace and pro-
pane/LP supply.
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
INSTALLING GAS PIPING TO FIREPLACE
LOCATION
Installation Items Needed
Beforeinstallingfireplace,makesureyouhavetheitemslistedbelow.
• externalregulatorfor propane/LP unitonly(suppliedby installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap (optional)
• tee joint
• pipe wrench
• approved flexible gas line with gas connector (if allowed by lo-
cal codes) (not provided)
* 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, pages 28 through 30.
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 17. Pointing the vent down protects it
from freezing rain or sleet.
INSTALLATION
Built-In Installation Fireplace Installation (Cont.)
Installing Gas Piping to Fireplace Location
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in cer-
tain areas. Check your local codes. Use pipe of 1/2"
diameter or greater to allow proper gas volume to
fireplace. If pipe is too small, undue loss of pressure
will occur.
Figure17-ExternalRegulatoronPropane/LP SupplyTank with
Vent Pointing Down
External
Regulator
Vent
Pointing
Down
Propane/LP
Supply Tank

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INSTALLATION
Installing Gas Piping to Fireplace Location (Cont.)
Connecting Fireplace to Gas Supply
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, pages 28 through 30.
** Minimum inlet pressure for purpose of input adjustment.
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 fireplace (see Figure 18).
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.
ApplypipejointsealantlightlytomaleNPTthreads.Thiswillprevent
excess sealant from going into pipe. Excess sealant in pipe could
result in clogged fireplace valves. Never use sealant on flare threads.
CAUTION: Use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
We recommend that you install a sediment trap in supply line as
showninFigure18.Locatesedimenttrapwhereitiswithinreachfor
cleaning.Installinpipingsystembetweenfuelsupplyandfireplace.
Locatesedimenttrapwhere trapped matter isnotlikely to freeze. A
sediment trap traps moisture and contaminants. This keeps them
from going into fireplace gas controls. If sediment trap is not
installed or is installed wrong, fireplace may not run properly.
CONNECTING EQUIPMENT SHUTOFF VALVE
TO HEATER CONTROL
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not provided)
1. Remove fireplace screen. Remove two screws that hold fire-
place screen in place for shipping. These screws are located
near top of screen. Discard screws. Lift fireplace screen up
and pull out to remove.
2. Remove screws that attach log base assembly to fireplace (see
Figure 19). Carefully lift up log base assembly and remove
from fireplace (see Figure 19).
Note: If adding the G8000A series brick liner accessory, install it
now. Follow instructions in G8000A accessory kit.
CAUTION: Do not pick up log base assembly by
burner.This could damage burner. Onlyhandle base
by grates.
Figure 18 - Gas Connection
Sediment Trap
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPT Tap*
3" Minimum
Cap Pipe Tee
Nipple Joint
Natural Gas
From Gas Meter
(5" W.C.** to 10.5" W.C.
Pressure)
Propane/LP
From External Regulator
(11" W.C.** to 14" W.C.
Pressure)
INSTALLATION
Continued
NOTICE:Mostbuildingcodesdonotpermitconcealed
gas connections. A flexible gas line is provided to
allow accessibility from the fireplace (see Figure 20,
page13).Theflexiblegassupplylineconnectiontothe
equipment shutoff valve should be accessible.
Figure 19 - Removing Log Base Assembly From Fireplace
3. Route gas line (provided by installer) from equipment shutoff
valve to fireplace. Route flexible gas supply line through one
of the access holes.

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➞
➞
Figure 20 - Attaching Flexible Gas Lines Together
Flexible Gas Line from
Fireplace Gas Regulator
To Fireplace
Gas Regulator Equipment Shutoff Valve
Provided by Installer
Propane/LP
To External
Regulator
Natural Gas
To Gas Meter
INSTALLATION
Continued
3. Pressurize supply piping system by either opening propane/LP
supplytankvalve for propane/LPgasor openingmaingas valve
located on or near gas meter for natural gas, or using com-
pressed 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 fireplace and equipment shutoff valve to gas sup-
ply. 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 21).
2. Pressurize supply piping system by either opening propane/LP
supplytankvalve for propane/LPgasor openingmaingas valve
located on or near gas meter for natural gas, or using com-
pressed 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 22 and 23, page 14). Apply non-
corrosive leak detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 21).
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 fireplace is in the OFF position.
4. Check all joints from equipment shutoff valve to gas control
valve (see Figures 22 or 23, page 14).Apply noncorrosive leak
detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, pages 15 through 17.
Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas toAppliance, page 16).
INSTALLATION
Connecting Fireplace to Gas Supply (Cont.)
Checking Gas Connections
WARNING: Test all gas piping and connections
for leaks after installing or servicing. Correct all
leaks at once.
WARNING:Never use an openflametocheckfor
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
CAUTION:Makesureexternalregulator has been
installed between propane/LP supply and fireplace.
See guidelines under Connecting Fireplace to Gas
Supply , page 12.
Pressure Testing gas Supply Piping system
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect fireplace with its main gas valve (control valve) and
equipment shutoff valve from gas supply piping system. Pres-
sures in excess of 1/2 psig will damage fireplace regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
CHECKING GAS CONNECTIONS
Figure 21 - Equipment Shutoff Valve
ON
POSITION
OFF
POSITION
Open
Closed
Equipment
Shutoff
Valve
4. Attach theflexiblegasline to gassupply(see Figure 20). Check
tightness of flexible gas line attached to gas regulator of fire-
place (see Figure 20).
5. Check all gas connections for leaks. See Checking Gas Con-
nections.
6. Replace log base assembly back into fireplace. Feed flexible
gas line into fireplace base area while replacing log base as-
sembly. Make sure the entire flexible gas line is in fireplace
base area. Reattach log base assembly to fireplace with screws
removed in step 2, page 12.

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Figure 23 - Checking Gas Joints for Propane/LP Gas
Propane/LP
Supply
Tank
Equipment
Shutoff Valve
Gas Control Valve
Gas Meter
Figure 22 - Checking Gas Joints for Natural Gas
Gas Control Valve
INSTALLATION
Continued
INSTALLATION
Checking Gas Connections (Cont.)
Installing Logs
WARNING: You must operate this fireplace with
the fireplace screen in place. Make sure fireplace
screen is in place before running fireplace.
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.
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.
INSTALLING LOGS
CAUTION: Do not remove the metal data plates
attachedtotheheaterbaseassembly.Thedataplates
contain important safety and warranty information.
1. Place front log (#1) on top of the grate. Make sure the notches
in the bottom of the log fit over the grate prongs (see Figure
24). Push back of log flush with metal grate bar.
2. Rest middle log (#2) behind metal posts on front burner. Make
sure the grooves in the bottom of the log fit over the grate.
Bring the log forward next to the metal posts (see Figure 25).
3. Slide the grooves in the back of the rear log (#3) against the
rear grate prongs. Make sure the peg on the log is on top (see
Figure 26).
4. Place the crossover log (#4) on the rear log and the middle log.
Make sure the peg on the rear log is in the hole in the bottom
of the crossover log. The crossover log should fit in the cutout
of the middle log (see Figure 27).
5. Install fireplace screen by slipping notches of fireplace screen
over screws on front of fireplace (see Figure 28, page 15).
Figure 24 - Installing Front
Log (#1)
Figure 26 - Installing Rear
Log (#3)
Figure 25 - Installing Middle
Log (#2)
Middle Log (#2)
Rear Log
(#3)
Peg
Grate
Prong
Rear
Burner
Groove
in Back
of Log
Groove
in Back
of Log
Grate
Prongs
Metal Grate Bar
Front Log (#1)
Notch
Metal Post
Metal
Post
Groove Groove
Grate
Grate
Prong
Figure 27 - Installing Crossover
Log (#4)
Crossover
Log (#4)
Hole
Peg
Cutout
Equipment
Shutoff
Valve

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O
F
F
P
I
L
O
T
O
N
L
O
I
H
AUTO
OFF
ON
Figure 28 - Installing Fireplace Screen
INSTALLATION
Continued
Notches
Screws for
Mounting Screen
INSTALLATION
Installing Logs (Cont.)
OPERATING FIREPLACE
For Your Safety Read Before Lighting
Lighting Instructions
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
department.
C. Useonly your hand to push in or turn thegascontrolknob.
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 youdonotfollowtheseinstructions
exactly, a fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
FOR YOUR SAFETY
READ BEFORE LIGHTING
OPERATING FIREPLACE
LIGHTING INSTRUCTIONS
WARNING: You must operate this fireplace with
the fireplace screen in place. Make sure fireplace
screen is installed before running fireplace.
NOTICE: During initial operation of new fireplace,
burning logs will give off a paper-burning smell.
Open damper or window to 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. Set selector switch in OFF position.
WARNING: Burners will come on automatically
within one minute when the selector switch is in the
ON position after the pilot is lit.
4. Press in and turn control knob clockwise to the
OFF position.
5. 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.
6. Press in and turn control knob counterclockwise
to the PILOT position. Press in control knob for five (5)
seconds (see Figure 29).
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.
Figure29-ControlKnobandIgnitorButtonLocation(Shownas
Supplied, No Control Options)
Control Knob
Ignitor Button
Selector Switch
Flame Adjustment
Knob
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.

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7. 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 withmatch, see Manual
Lighting Procedure.
8. 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.
9. Slightly push in and turn control knob counterclockwise
to the ON position.
10. Wait one minute and switch selector switch to the ON posi-
tion to light burners.
11. Set flame adjustment knob to any level between HI and LO.
OPERATING FIREPLACE
Continued
OPERATING FIREPLACE
Lighting Instructions (Cont.)
To Turn Off Gas To Appliance
Manual Lighting Procedure
Optional Remote Operation
WARNING: Make sure the selector switch is in the
OFF position when you are away from home for long
periodsof time. Heater willcomeon automatically with
selector switch in the ON position.
1. Followsteps1through6underLightingInstructions,page15.
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
steps 9 through 11, column 1.
Shutting Off Heater
1. Turn controlknobclockwise tothe OFF position.
2a. Set selector switch in the OFF position.
2b. If Using Optional Hand-Held Remote: Setselectorswitchin
the OFF position to keep from draining battery.
Shutting Off Burners Only (pilot stays lit)
Youmayshutofftheburnersandkeepthepilotlitbydoingone
of the following:
• Turn control knob clockwise to the PILOT position.
• Use remote control manual OFF button.
• Set selector switch in the OFF position.
Figure 31 - Pilot (Propane/LP)
Ignitor
Electrode
Pilot Burner
Figure 30 - Pilot (Natural)
Pilot Burner Ignitor
Electrode
TO TURN OFF GAS TO APPLIANCE
MANUAL LIGHTING PROCEDURE
1. After lighting, let pilot flame burn for about one minute.
Turn control knob to ON position. Adjust flame adjust-
ment knob anywhere between HI and LO. Slide the selec-
tor switch to the REMOTE position (see Figure 32, page
17). Note: The burners may light if hand-held remote ON
button was on when selector switch was last turned off.
You can now turn the burners on and off with the hand-
held remote control unit.
IMPORTANT : Do not leave the selector switch in the RE-
MOTE position when the pilot is not lit.This will drain the
battery.
IMPORTANT: Besuretopress the ON/OFF buttonsonthe
hand-heldremotecontrol unit forupto3secondstoassure
proper operation.
GHRC Series Operation:
2a. Press the ON/OFF button to turn the burners on and off.
When turning burners off, the pilot will remain lit.
NOTICE: You must light the pilot before using the
hand-held remote control unit. See Lighting Instruc-
tions on page 15.
OPTIONAL REMOTE OPERATION
Note: All remote control accessories must be purchased sepa-
rately (see Accessories, pages 28 through 30). Follow instruc-
tions included with the remote control.
Thermostat Control Operation
(Optional GHRCTA Series Only) The thermostat control set-
ting on the remote control unit can be set to any comfort level
between WARMER and COOLER. The burners will turn on
and off automatically to maintain the comfort level you select.
The ideal comfort setting will vary by household depending
upontheamountofspaceto beheated,the outputofthe central
heating system, etc.
Forwallthermostatoperation,followinstructionsuppliedwith
thermostat accessory GWMT1. For wall switch operation fol-
low instructions supplied with GWMS2.

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Figure 32 - Setting the Selector Switch, Control Knob, and
Flame Adjustment Knob for Remote Operation
O
F
F
P
I
L
O
T
O
N
L
O
I
H
ON
OFF
REMOTE
Selector Switch in Remote
Position (Optional Remote
Control)
Flame Adjustment Knob
GHRCTA Series Operation:
2b. Press theAUTO/ON/OFF button on the hand-held remote
control (see Figure 33). The lights to the left of the button
will showAUTO, ON, or OFF.
• In the ON mode, the burners will ignite. The heater is in
manual mode when ON is lit.
• In theAUTO mode, the thermostat in the hand-held remote
unit controls the room temperature. To increase the room
temperature, press the top arrow of the TEMP button. To
lower the room temperature, press the bottom arrow of the
TEMP button.At higher settings the heater will run longer.
IMPORTANT: This remotecontrolhas been speciallyen-
gineeredtotake an air temperaturesample everyminute
in the auto mode. It will not respond immediately to the
temperature setting being turned up or down.
IMPORTANT: The hand-held remote control unit must
be near the fireplace. Do not keep the hand-held remote
control unit too close to the fireplace.The thermostat on
thehand-heldremote controlunit willheatuptoo quickly
and turn the fireplace off.
3. To turn the burners off, press the AUTO/ON/OFF button
until OFF lights. The pilot will remain lit.
IMPORTANT: To turn the pilot off, manually turn the con-
trol knob on the fireplace to the OFF position.
OPERATING FIREPLACE
Continued
Figure 33 - Thermostat Hand-Held Remote Control Unit
Selections (GHRCTA Series Only)
Shows Temperature
Setting
Increases Room
Temperature in
AUTO Mode
Decreases Room
Temperature in
AUTO Mode
Turns Burners On or
Off and Allows You
to Choose the Auto
Setting
The Log Heater will
Automatically Cycle
between Pilot and
the Heat Setting that
has been Selected
Control Knob in
On Position
OPTIONAL BLOWER OPERATION
Locate the blower switch by opening lower louver on fireplace.
Blower switch is located at lower left inside louver door.
The GA3700TA thermostat-controlled blower has a variable
speed control with an ON/OFF switch. The blower will start
when the thermostat senses a sufficient increase in firebox
temperature. The GA3700 variable speed blower also has an
ON/OFF switch built into the variable speed control.
NoteforGA3700TAOnly: IfyouareusingGA3700TAblower,
your fireplace and blower will not turn on and off at the same
time. The fireplace may run for several minutes before the
blowerturnson.Aftertheheatermodulatestothepilotposition,
theblowerwillcontinuetorun.Theblowerwillshutoffafterthe
firebox temperature decreases.
Note: It is safe to operate fireplace with blower turned off.
However,theblowerhelpsdistributeheatedairfromthefireplace.
Follow installation instructions included with the blower
accessory.
WARNING: This fireplace has a three-prong,
groundedelectricalplug.Thisplughelpsprotectyou
against electrical shock. Only connect plug to a
properly grounded, three-prong receptacle. Do not
cut or remove the grounding prong from this plug.
OPERATING FIREPLACE
Optional Remote Operation (Cont.)
Optional Blower Operation

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Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 34 shows a correct pilot flame pattern. Figure 35 shows an
incorrect pilot flame pattern. The incorrect pilot flame is not
properly heating the thermocouple. When the thermocouple cools,
the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 35
• turn heater off (see To Turn Off Gas to Appliance, page 16)
• see Troubleshooting, pages 20 through 22
INSPECTING BURNERS
INSPECTING BURNERS
Pilot Flame Pattern
Main Burner
Front Burner Flame Pattern
Figure 34 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 35 - Incorrect Pilot Flame Pattern
Pilot Burner
Thermocouple
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. Either remove blockage or replace burner. Blocked burner
flame holes may create soot.
Figure 36 - Correct Burner Flame Pattern
Yellow Tipping
Figure 37 - Incorrect Burner Flame Pattern
FRONT BURNER FLAME PATTERN
WARNING: If front burner flame pattern shows
yellow tipping, your fireplace could produce increased
levels of carbon monoxide. Follow instructions below.
Yellow flame on rear burner is normal.
NOTICE: Do not mistake orange flames with yellow
tipping. Dirt or other fine particles are burned by
fireplace, causing brief patches of orange flame.
Figure36showscorrectfrontburnerflamepattern.Figure37shows
incorrect front burner flame pattern. The incorrect burner flame
pattern shows yellow tipping at top of blue flame.
If front burner flame pattern is incorrect, as shown in Figure 37
• turn fireplace off (see To Turn Off Gas to Appliance, page 16)
• see Troubleshooting, pages 20 through 22

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For more information, visit www.desatech.com
CLEANING AND
MAINTENANCE
WARNING: Turn off fireplace and let cool before
cleaning.
CAUTION: You must keep control areas, burner,
and circulating air passageways of fireplace clean.
Inspect these areas of fireplace before each use.
Havefireplaceinspectedyearlybyaqualifiedservice
person. Fireplace may need more frequent cleaning
due to excessive lint from carpeting, bedding mate-
rial, pet hair, etc.
CLEANING BURNER INJECTOR HOLDER
AND PILOT AIR INLET HOLE
Theprimary airinletholesallowtheproperamountofair tomixwith
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.Ifyoudon'tfollowdirectionsonthecan, youcould
damage the pilot assembly.
1. Shut off the unit, including the pilot.Allow the unit to cool for
at least thirty minutes.
2. Inspect burner, pilot, and primary air inlet holes on injector
holder for dust and dirt (see Figure 38).
3. Blow air through the ports/slots and holes in the burner.
4. 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.
5. Blow air into the primary air holes on the injector holder.
6. In case any large clumps of dust have now been pushed into
the burner repeat steps 3 and 4.
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 Figure39).With theunitoff, 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).
Figure 38 - Injector Holder On Outlet Burner Tube
Burner
Tube
Injector Holder
Primary Air
Inlet Holes
Ports/Slots
Figure 39 - Pilot Inlet Air Hole
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Ports/Slots
CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder and Pilot Air Inlet Hole
Logs

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For more information, visit www.desatech.com
TROUBLESHOOTING
TROUBLESHOOTING 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.
Note: For additional help, visit DESA
International’stechnicalservicewebsite
at www.desatech.com.
Note: Alltroubleshootingitemsarelistedin
order of operation.
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 broken
7. Ignitor electrode positioned wrong
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 knobnotpressedin long enough
3. Equipment shutoff valve not fully open
4. 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
5. Thermocouple connection loose at con-
trol valve
6. Thermocouple damaged
7. 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 piezoignitortobase
panel of log set. Nut is located behind
base panel.
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace piezo ignitor
7. Replace piezo ignitor
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 19) 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. Fully open equipment shutoff valve
4. A) Contact local natural or propane/LP
gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 19) or replace ODS/
pilot assembly
5. Hand tighten until snug, then tighten
1/4 turn more
6. Replace thermocouple
7. 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