Desa Comfort Glow CGCF26TN Quick start guide

CGCF26TP
CGCF26TN
14,000 to 26,000 Btu/Hr
withThermostat
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-
sultaqualifiedinstaller,serviceagency,
or the gas supplier.
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
Save this manual for future reference.
Save this manual for future reference.
WARNING: This is an unvented gas-
firedheater.Itusesair(oxygen)fromthe
room in which it is installed. Provisions
for adequate combustion and ventila-
tionairmustbeprovided.Referto Airfor
Combustion and Ventilation section on
page 5 of this manual.
VENT-FREE COMPACT FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
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Shown with Optional
Cabinet Mantel/Hearth
Base Accessory

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TABLE OF CONTENTS
SAFETY INFORMATION
DANGER: Carbon monoxide poisoning may lead
to death!
SAFETY INFORMATION
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoningresemble the flu, withheadaches, dizziness,or nausea.If
you have these signs, the fireplace may not be working properly.
Get fresh air at once! Have fireplace serviced. Some people are
more affected by carbon monoxide than others. These include
pregnantwomen,peoplewithheartorlungdiseaseoranemia,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 helps
youdetectagasleak.However,theodoraddedtothegascanfade.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 fireplace.
WARNING ICON G 001
WARNINGS
IMPORTANT: Read this owner’s manual carefully
and completely before trying to assemble, operate,
or service this fireplace. Improper use of this fire-
place can cause serious injury or death from burns,
fire,explosion,electricalshock,andcarbonmonox-
ide poisoning.
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.
WARNING: Any change to this fireplace or its
controls can be dangerous.
WARNING: Donot allowfans toblow directlyinto
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.
WARNING: Do not use a blower insert, heat ex-
changer insert, or other accessory not approved for
use with this fireplace.
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 becomes very hot when
running fireplace. Keep children and adults away
fromhot surfacesto avoidburnsor clothingignition.
Fireplace will remain hot for a time after shutdown.
Allow surfaces to cool before touching.
Carefully supervise young children when they are in
same room with fireplace.
Keeptheappliancearea clearandfreefromcombus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
You must operate this fireplace with the fireplace
screeninplace.Makesurefireplacescreenisinplace
before running fireplace.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
LOCAL CODES........................................................................... 3
PRODUCT IDENTIFICATION ..................................................... 3
PRODUCT FEATURES .............................................................. 4
UNPACKING ............................................................................... 4
ASSEMBLY ................................................................................. 4
AIR FOR COMBUSTION AND VENTILATION ........................... 5
INSTALLATION ........................................................................... 7
OPERATING FIREPLACE ........................................................ 17
INSPECTING BURNER ............................................................ 18
CLEANING AND MAINTENANCE ............................................ 19
TROUBLESHOOTING .............................................................. 20
SPECIFICATIONS .................................................................... 23
REPLACEMENT PARTS .......................................................... 23
SERVICE HINTS....................................................................... 23
TECHNICAL SERVICE ............................................................. 23
ILLUSTRATED PARTS BREAKDOWNAND PARTS LIST ....... 24
PARTS CENTRALS .................................................................. 26
OWNER’S REGISTRATION FORM.......................................... 27
ACCESSORIES ........................................................................ 29
WARRANTY INFORMATION ...................................... Back Cover

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PRODUCT IDENTIFICATION
Figure 1 - Vent-Free Gas Compact Fireplace
LOCAL CODES
Install and use fireplace with care. Follow all local codes. In the
absenceoflocalcodes,usethelatesteditionofTheNationalFuelGas
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
SAFETY INFORMATION
Continued
Ignitor Button
Screen
Fireplace
Cabinet
Log Set
Control Knob
SAFETY INFORMATION
LOCAL CODES
PRODUCT IDENTIFICATION
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 supply tank(s)outdoors(propane/LPunits only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use any phone in
your building
• immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions
• if you cannot reach your gas supplier, call the fire department
4. This 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,or rock wool.Using theseadded itemscan causesoot-
ing. Do not add lava rock around base. Rock and debris could
fall into the control area of fireplace.
7. This fireplace is designed to be smokeless. If logs ever appear
to smoke, turn off fireplace and call a qualified service person.
Note: During initial operation, slight smoking could occur due
to log curing and fireplace burning manufacturing residues.
8. To prevent the creationof soot, follow theinstructions in Clean-
ing and Maintenance, page 19.
9. Before using furniture polish, wax, carpet cleaner, or similar
products, turn heater off. If heated, the vapors from these prod-
ucts may create a white powder residue within burner box or
on adjacent walls or furniture.
10. This fireplace needs fresh air ventilation to run properly. This
fireplace has an Oxygen Depletion Sensing (ODS) safety
shutoffsystem.TheODSshuts down the fireplaceif not enough
fresh air is available. See Air for Combustion and Ventilation,
pages 5 through 7. If fireplace keeps shutting off, see Trouble-
shooting, pages 20 through 22.
11. Do not run fireplace
• where flammable liquids or vapors are used or stored.
• under dusty conditions.
12. Do not use this fireplace to cook food or burn paper or
other objects.
13. Never place any objects in the fireplace or on logs.
14. Do not use fireplace if any part has been under water. Immedi-
ately call a qualified service technician to inspect the room
fireplace and to replace any part of the control system and any
gas control which has been under water.
15. Turnoffandunplugfireplaceand let cool before servicing. Only
a qualified service person should service and repair fireplace.
16. Operating fireplace above elevations of 4,500 feet could cause
pilot outage.
17. Do not operate fireplace if any log is broken. Do not operate
fireplace if a log is chipped (dime-sized or larger).
18. To prevent performance problems, do not use propane/LPfuel
tank of less than 100 lbs. capacity (propane/LP units only).
19. Provide adequate clearances around air openings.

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SAFETY PILOT
ThisfireplacehasapilotwithanOxygenDepletion Sensing (ODS)
safety shutoff system. The ODS/pilot is a required feature for vent-
free room fireplaces. The ODS/pilot shuts off the fireplace if there
is not enough fresh air.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system requires no matches,
batteries, or other sources to light fireplace.
THERMOSTATIC HEAT CONTROL
Thisfireplacehasathermostatsensingbulbandacontrolvalve.The
thermostat will automatically modulate the heat output to maintain
a consistent room temperature. This results in greater fireplace
comfort. This can also result in lower gas bills.
UNPACKING
1. Remove log box and fireplace from carton. IMPORTANT: The
fireplace hood is inside the cardboard protective end wrap on
the left side of fireplace (as viewed from front). Adecal is on
the outside of the cardboard end wrap stating hood is enclosed
(see Figure 2).
2. Remove hood from cardboard protective end wrap as shown
in Figure 2.
3. Removeallprotectivepackagingappliedto fireplaceforshipment.
4. Make sure your fireplace includes one hardware packet.
5. Check fireplace for any shipping damage. If fireplace is dam-
aged, promptly inform dealer where you bought fireplace.
Figure 2 - Removing Fireplace Hood
IMPORTANT:
THIS PACKAGE CONTAINS A
FIREPLACE HOOD. UNWRAP
CARTON AND REMOVE HOOD
BEFORE DISCARDING
PROTECTIVE PACKAGING.
1
2
Hood
Cardboard Protective
Fireplace End Wrap
Hood Enclosed
Decal
ASSEMBLY
WARNING: Always have branch support and
screen in place before operating fireplace. This pre-
vents excessive temperatures on fireplace surfaces.
Figure 3 - Assembling Fireplace
ASSEMBLING FIREPLACE
Tools Required:
• Phillips screwdriver
• 5/16" hex wrench
• slotted screwdriver
• scissors
Installing Log
1. Lift screen up and pull out to remove.
2. Cut two plastic straps to remove the log from the firebox cavity.
3. An optional blower is available. See Accessories, page 29. In-
stall optional blower now. Follow installation instructions pro-
vided with blower.
4. Remove log packaging material and discard packaging. Gently
place log set on burner support (see Figure 3). The log should
fit flat against top of burner support and log locator tabs fit
into the slots under the log. Do not allow log to contact flame.
If flame contacts log, soot will be created.
5. Reattach screen by placing the notches in the screen frame
over the shoulder screws and pushing down.
WARNING: Failure to position the parts in accor-
dance with these diagrams or failure to use only parts
specifically approved with this fireplace may result in
property damage or personal injury.
PRODUCT FEATURES
Log
Screen
Burner Support with
Log Locator Tabs
Branch Support
Shoulder
Screw
PRODUCT FEATURES
UNPACKING
ASSEMBLY
Assembling Fireplace

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Figure 4 - Assembling Hood
Hood Tab
Assembling Hood
1. Locate four black phillips sheet metal screws from the hard-
ware packet.
2. Rotate hood as shown in Figure 4. Make sure hood tabs
point toward fireplace.
3. Insert hood tabs between baffle and louvers (see Figure 4).
4. Gently rotate hood to upright position. Make sure hood tabs are
behindlouvers and hoodis resting onfirebox top(see Figure4).
5. Align screw holes on hood with screw holes on firebox top.
6. Insert screws as shown in Figure 4. Tighten screws firmly.
Sheet Metal
Screws
Louver
Baffle
Firebox Top
Hood
Hood Tabs
ASSEMBLY
Continued
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New materi-
als, increased insulation, and new construction methods help reduce
heat loss in homes. Home owners weather strip and caulk around
windowsand doorstokeepthe coldairoutand thewarmairin. During
heatingmonths,homeownerswanttheirhomesasairtightaspossible.
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-
tionstoinsureproperfreshairforthisandotherfuel-
burning appliances in your home.
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 5 through 7 will help you classify your
space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough
fresh air for combustion and ventilation. However, in buildings of
unusually tight construction, you must provide additional fresh air.
Unusually tight construction is defined as construction
where:
a. walls andceilings exposed tothe outsideatmosphere
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,between wall-ceilingjoints,between
wall panels, at penetrations for plumbing, electrical,
and gas lines, and at other openings.
If your home meets all of the three criteria above, you
must provide additional fresh air. See Ventilation Air
From Outdoors , page 7 .
If your home does not meet all of the three criteria above,
proceed to Determining Fresh-Air Flow For Fireplace
Location , page 6.
ASSEMBLY
Assembling Fireplace (Cont.)
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation

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AIR FOR COMBUSTION AND
VENTILATION
Continued
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, are consideredapartoftheunconfined 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
Unconfined Space
Usethiswork sheettodetermine if youhave a 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 is suppliedwithgrills oropen-
ings, add the volume of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine the maximum Btu/Hr
the space can support.
__________ (volume of space) x 20 = (Maximum Btu/Hr the space
can support)
Example: 2560 cu. ft. (volume of space) x 20 = 51,200 (maximum
Btu/Hr the space can support)
WARNING: If the area in which the heater may be
operated is smaller than that defined as an uncon-
fined space or if the building is of unusually tight
construction,provideadequatecombustionandven-
tilation air by one of the methods described in the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 Sec-
tion 5.3 or applicable local codes .
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)
56,000 Btu/Hr (actual amount of Btu/Hr used)
Thespace in theabove example is a confinedspace because the actual Btu/
HrusedismorethanthemaximumBtu/Hrthespacecansupport.Youmust
provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the
extra space provides an unconfined space, remove door to adjoining
roomor add ventilation grills betweenrooms. SeeVentilationAir From
Inside Building, page 7.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors, page 7.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room
unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can
support,thespaceisanunconfinedspace.Youwillneednoadditionalfresh
air ventilation.
30,000
26,000
56,000
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation (Cont.)
Determining Fresh-Air Flow for Heater Location

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Figure 6 - Ventilation Air from Outdoors Shown with Optional
Mantel
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION AND
VENTILATION
Continued
Figure 5 - Ventilation Air from Inside Building Shown with
Optional Mantel
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 5). You can also remove door into
adjoining room (see option 3, Figure 5). Follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
Ventilation Air From Outdoors
Provideextrafreshairbyusingventilationgrillsorducts.You must
provide two permanent openings: one within 12" of the ceiling and
one within 12" of the floor. Connect these items directly to the
outdoorsorspacesopentothe outdoors.Thesespacesincludeattics
andcrawlspaces.FollowtheNationalFuelGasCode,ANSIZ223.1/
NFPA 54, Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Donotprovideopeningsforinletoroutletairintoattic
if attic has a thermostat-controlled power vent. Heated air entering the
attic will activate the power vent.
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
INSTALLATION
Note: Your Comfort Glow fireplace is designed to be used in zero
clearance installations. Wall or framing material can be placed
directlyagainst anyexteriorsurfaceofyour fireplace,exceptwhere
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, page 9)
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for your unit. If
your gas supply is not correct, do not install fireplace. Call dealer
where you bought fireplace for proper type fireplace.
WARNING: A qualified service person must in-
stall fireplace. Follow all 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 heater. This will help circulate the heat
throughoutthehouse.Intheeventofapoweroutage,
you can use this heater as your primary heat source.
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air
INSTALLATION
Check Gas Type

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You can recess firebox into the wall. You can also position fireplace
in the optional cabinet or corner mantels. IMPORTANT: Only use
optionalcabinetorcorner mantels specified in this manual. Purchase
the optional mantel from your dealer (see Accessories, page 29).
CAUTION: This fireplace creates warm air cur-
rents. These currents move heat to wall surfaces next
to fireplace. Installing fireplace next to vinyl or cloth
wallcoveringsoroperatingfireplacewhereimpurities
(such as, but not limited to, tobacco smoke, aromatic
candles,cleaningfluids,oilorkerosenelamps,etc.)in
the air exist, may discolor walls or cause odors.
WARNING: Never install the fireplace
•in a bedroom or a bathroom
•in a recreational vehicle
•where curtains, furniture, clothing, or other flam-
mable objects are less than 36 inches from the
front, top, or sides of the fireplace
•as a fireplace insert
•in high traffic areas
•in windy or drafty areas
I MPORTANT: Vent-freefireplacesaddmoisturetotheair.Although
this is beneficial, installing fireplace in rooms without enough venti-
lationair may causemildew toform fromtoo muchmoisture. SeeAir
for Combustion and Ventilation, pages 5 through 7.
Note: When installing fireplace directly on carpeting, tile or other
combustible material, other than wood flooring, the fireplace shall
be installed on a metal or wood panel extending the full width and
depth of the fireplace
LOCATING FIREPLACE
WARNING: Maintain the minimum clearances
shown in Figures 7 and 8. If you can, provide greater
clearances from floor, ceiling, and joining wall.
Figure 8 - Mounting Clearances As Viewed From Front of
Fireplace Shown with Optional Mantel
Figure 7 - Mounting Clearances As Viewed From Front of
Fireplace Shown Built In The Wall
6"
Minimum
From
Sides Of
Fireplace
Left
Side
CEILING
36" Minimum
FLOOR
Right
Side
Top Of
Mantel Can
Be Flush
With Wall
Left
Side
CEILING
Right
Side
36"
Minimum
INSTALLATION ITEMS
Beforeinstallingfireplace,makesureyouhavetheitemslistedbelow.
• external regulator - propane/LP only (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• ground joint union
• sediment trap
• tee joint
• pipe wrench
* ACSAdesign-certifiedequipmentshutoffvalvewith1/8"NPTtap
is an acceptable alternative to test gauge connection. Purchase the
optional CSA design-certified equipment shutoff valve from your
dealer. See Accessories, page 29.
Note: If desired, purchase a four-sided brass trim kit for built-in
installations. See Accessories, page 29.
0" Minimum To Top
Surface Of Carpeting,
Tile Or Other
Combustible Material
0" Minimum To Top
Surface Of Carpeting,
Tile Or Other
Combustible Material
INSTALLATION
Continued
CAUTION:Ifyouinstallthefireplaceinahomegarage
•fireplacepilotandburner mustbe atleast18inches
above floor.
•locatefireplacewheremovingvehiclewillnothitit.
INSTALLATION
Installation Items
Locating Fireplace

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INSTALLATION
Continued
36
5/8
"25
7/8
"
51
3/4
"
26
7/8
"
1. Frame in rough opening. Use dimensions shown in Figure 9 for
the rough opening.
If installing in a corner, use dimensions shown in Figure 10
for the rough opening. The height is 26 7/8" which is the same
as the wall opening above.
2. If installing GA3450T blower accessory, do so at this time. Fol-
low instructions included with blower accessory. Note: If not
installing blower accessory, you may wish to run electrical wir-
ing to your fireplace for future blower installation (see Accesso-
ries, page 29). Use only approved three-wire electrical wiring.
Note: Aqualifiedinstaller should makeallelectricalconnections.
267 / 8"
267
/ 8"
3/4" Off
The Floor
Minimum
10 1 / 2"
Figure 9 - Rough Opening for
Installing in Wall
BUILT-IN FIREPLACE INSTALLATION
Built-ininstallation of this fireplaceinvolves installingfireplace into
a framed-in enclosure. This makes the front of fireplace flush with
wall. An optional brass trim kit accessory is available (see Accesso-
ries, page 29). Brass trim will extend past sides of fireplace approxi-
mately 1/2 inch. This will cover the rough edges of the wall opening.
Ifinstallingabuilt-inmantelabovethefireplace,youmustfollowthe
clearances shown in Figure 12, page 10. Follow the instructions
below to install the fireplace in this manner. Note: Your Comfort
Glow fireplace is designed to be used in zero clearance installations.
Wall or framing material can be placed directly against any exterior
surface on the rear, sides, or top of your fireplace.
Actual Framing
Height 26" 26 7/8"
Front Width 26 3/4" 26 7/8"
Depth 9 1/2" 10 1/2"
Bottom 3/4"3/4"
Figure 11 - Attaching Fireplace to Wall Studs
Figure10 - Rough Opening
for Installing in Corner
WARNING:If pre-wiring,do notconnect wiringto
any electrical source at this time.
Install fireplace electrical outlet and connect wiring
to outlet before connecting to electrical source. The
fireplaceelectricaloutletisincludedwiththeGA3450T
blower accessory.
Only use the fireplace electrical outlet supplied with
the GA3450T blower accessory.
3. Install gas piping tofireplace location.Thisinstallation includes
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.
4. If you have not assembled firebox, follow instructions on page 4.
5. Carefully set fireplace in front of rough opening with back of
fireplace inside wall opening.
6. Attach flexible gas line to fireplace gas regulator. See Con-
necting to Gas Supply, page 14.
7. Bend four nailing flanges on outer casing with pliers (see
Figure 11).
8. Attach fireplace to wall studs using nails or wood screws
through holes in nailing flange.
9. Check all gas connections for leaks. See Checking Gas Con-
nections, page 16.
10. If using optional brass trim kit, install the trim after final fin-
ishing and/or painting of wall. See instructions included with
brass trim accessory for attaching brass trim.
IMPORTANT: When finishing your firebox, combustible materials
suchaswall board, gypsum board, sheetrock,drywall,plywood,etc.
maybebuttedupnexttothesidesandtopofthefirebox.Combustible
materials should never overlap the firebox front facing.
Nails or Wood
Screws
Nailing
Flanges
For convenience and efficiency, install fireplace
• where there is easy access for operation, inspection, and service.
• in coldest part of room
An optional blower kit is available from your dealer. See Accesso-
ries, page 29. If planning to use blower, locate fireplace near an
electrical outlet.
INSTALLATION
Locating Fireplace (Cont.)
Built-In Fireplace Installation

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10
13" 16"
19"
21"
2
1
/2"
6"
8"
10"
Note:
All vertical
measurements
are from top of
fireplace
opening to
bottom of
mantel shelf. All
measurements
are in inches.
MANTEL CLEARANCES FOR BUILT-IN
INSTALLATION
Ifplacing mantel above built-in fireplace,you must meet minimum
clearance between mantel shelf and top of fireplace opening.
Figure 12 - Minimum Mantel Clearances for Built-In Installation
Mantel Shelf
Side of
Firebox
INSTALLATION
Continued
NOTICE:Surface temperaturesof adjacentwallsand
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Followallminimumclearancesshowninthismanual.
NOTICE: 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
WARNING: Do not allow any combustible materi-
als to overlap the firebox front facing.
IMPORTANT: Noncombustible materials such as brick, tile, etc.
may overlap the front facing, but should never cover any necessary
openings like louvered slots.
WARNING: Do not allow noncombustible materials
to cover any necessary openings like louvered slots.
WARNING: Use only noncombustible mortar or
adhesives when overlapping the front facing with
noncombustible facing material.
WARNING: Never modify or cover the louvered
slots on the front of the firebox.
Note: All vertical
measurements are
from top of fireplace
opening to bottom of
mantel shelf. All
measurements are in
inches.
OPTIONAL MANTEL INSTALLATION
Note: Refer to instructions provided with the mantel for assembly
instructions. Refer to instructions below for system installation.
Refer to instructions on page 4 for firebox assembly. Blower
accessory should be installed if it is being used (see Installing
Blower Accessory GA3450T, pages 11 through 13).
1. Unscrew four brass screws that attach top louver to fireplace.
Remove louver from fireplace and set aside.
2. Place fireplace on wood base.
3. Place mantel around fireplace/base assembly.
4. Assemble brass trim kit. See Assembling Brass Trim, page 11.
5. Firmly snap brass trim kit on shoulder screws. Shoulder screws
are located on fireplace cabinet (see Figure 13).
Shoulder Screws
Assembled Brass Trim
Hole for 3"
Wood Screw
for Attaching
Fireplace to
Wooden Base
Hole for 3"
Wood Screw
for Attaching
Fireplace to
Mantel
Figure 13 - Attaching Brass Trim to Fireplace
INSTALLATION
Built-In Fireplace Installation (Cont.)
Mantel Clearances for Built-In Installation
Optional Mantel Installation

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11
INSTALLATION
Continued
Figure 14 - Attaching Wood Base to Floor
1 3/4" Screw
Wood Base
6. Align brass trim kit for flush fit around opening.
7. Use two 3" wood screws provided and attach fireplace base to
wooden base (see Figure 13, page 10).
8. Remove brass trim kit and mantel. Be careful not to damage
wall or mantel.
9. Place wood base next to wall at installation location.
10.
Attach wood base to floor with two 1
3
/ 4 " black screws provided
(see Figure 14). If the floor is concrete use anchor method (see
AttachingWood Base to Solid Floor, page 14).
11. Install gas line. See Connecting To Gas Supply, page 14.
12. Check for leaks. See Checking Gas Connections, page 16.
13. Place mantel around fireplace. Be careful not to damage wall
or mantel.
14. Place brass trim kit on the shoulder screws located on the side
and top of the fireplace. Firmly snap the brass trim over the
shoulder screws on fireplace (see Figure 13).
15. Adjust assembly to remove any gaps.Attach remaining two 3"
wood screws from hardware pack through openings inside of
fireplace sides into the mantel. The openings are located at top
behind the area for the louvers (see Figure 13, page 10).
16. Reinstall top louvers.
ASSEMBLING BRASS TRIM (Brass trim
shipped with mantel)
1. Remove packaging from three remaining pieces of brass trim.
2. Locate two adjusting plates with set screws, and two shims in
the hardware packet.
3. Align shim under adjusting plate as shown in Figure 15.
4. Slide one end of adjusting plate/shim in slot on mitered edge
of top brass trim (see Figure 15).
5. Slide other end of adjusting plate/shim in slot on mitered edge
of side brass trim (see Figure 15).
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 corner.
8. Set brass assembly aside for later installation.
Figure 15 - Assembling Brass Trim
Side Brass Trim
Top Brass Trim
Mitered Edge
Shim
Set Screws
Adjusting
Plate
Slot
Slot
INSTALLING BLOWER ACCESSORY
GA3450T
Removing Upper Louver Assembly
To install the blower accessory, you must first remove the upper
louver assembly.
1. Lift screen off heater.
2. Remove 4 screws from louver assembly (see Figure 16). Save
these screws.
3. Pull louver assembly straight out from the cabinet. Be careful
not to scratch the paint. Set louver assembly and screws aside.
Figure 16 - Removing Upper Louver Assembly
Upper Louver
Assembly
Screws
Blower Bracket
Mounting Holes
INSTALLATIONS
Optional Mantel Installation (Cont.)
Assembling Brass Trim
Installing Blower Accessory - GA3450T

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3
2
1
1
2
Note: If you are using a mantel with your heater, use the following
instructions. If your heater is built-in, see For Built-In Installation
on page 13.
1. Install snap bushings found in hardware kit into both holes in
rear of valve cover shield.
2. Make sure the wire harness is firmly connected to the terminals
on the blower bracket assembly.
Figure 18 - Installing Blower Bracket Assembly
3. Note the wire locations on back of AUTO/OFF/ON switch.
The terminals on back of switch are numbered 1, 2, and 3.
Carefully remove red wire from terminal 1 and blue wire from
terminal 3. Black wire can remain on middle terminal 2 (see
Figure 18).
4. Carefully disconnect green and white wires at their insulated
connectors.
5. In top of the heater cabinet, locate the four mounting holes on
theouter casing.Align thesefour holes withthose on theblower
bracket assembly.Attach blower bracket assembly to the outer
casing with 4 #10 screws provided (see Figure 18).
6. Route the wire harness through the hole in left side of baffle.
Pull wire harness through lower opening above where the
valve shield was removed. (see Figure 18).
7. Insert the 4 wire harness into one of the round holes in the rear
of the valve cover shield and through the rectangular hole in
the front of shield (see Figure 18).
8. Reconnect red wire to switch position 3. Reconnect blue wire
to switch position 1. Reconnect green and white wires.
Removing Valve Cover Shield
1. Open bottom louver assembly by swinging the assembly down
(see Figure 17).
2. Using short Phillips screwdriver, remove the screw under the
center of the branch support. Rotate valve cover shield clock-
wise and slide out. IMPORTANT: Do not remove shoulder
screw on the left side of valve cover shield. Slide the valve
cover shield off of the shoulder screw (see Figure 17).
Note: Ifyou do not have a shortPhillips screwdriver,thescreen,
log set, and branch support must be removed so a longer screw-
driver may be used. See Connecting Equipment Shutoff Valve
to Heater Control, page 15, steps 1 and 2.
Remove
Screw Valve Cover
Shield
Shoulder Screw
Figure 17 - Removing Valve Cover Shield
Branch Support
Snap Bushings Bottom Louver
Assembly
Installing Blower Assembly
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation.
CAUTION: Verify proper operation after servicing.
INSTALLATION
Continued
Wire
Harness
Blower Bracket
Assembly
Screw
Power
Cord
Valve Cover
Shield
Box Cover Wire
Harness
Switch
Plate
Switch
Baffle
Wiring Routing
Hole in Baffle
Blue
Red
INSTALLATION
Installing Blower Accessory - GA3450T (Cont.)

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13
3
2
1
Blower Bracket
Assembly
Screw
Wire
Harness
Power
Cord
Valve
Cover
Shield Box Cover Wire
Harness
Switch
Plate
Switch
Clamp Connector
(not included)
Outlet
Receptacle
Blue Red
Plastic
Wire Strap
Figure 19 - Installing Switch Plate to Valve Cover Shield
Switch
Plate Screw
Valve Cover
Shield
INSTALLATION
Continued
9. Install the switch plate on the valve cover shield with 2 #10
screws provided (see Figure 19). Reinstall the valve cover
shield. Route power cord out of the cabinet by inserting it
through the bushing on the outer casing (see Figure 18, page
12). Plug fan kit into 120-Volt grounded power supply and test
operation.
Note: When switch is in the AUTO position, the
fan will start after the heater has run for a few moments. The
fan will continue to run for several moments after the heater
has been turned off. When switch is in the ON position, the
fan will run until turned to OFF. Reinstall upper louver assem-
bly and hood if previously removed, (see Figure 16, page 11).
Close lower louver door.
Follow instructions in Removing Valve Cover Shield, page 12, then
1. Install a snap bushing found in hardware kit into one of the
holes found on rear of valve cover shield. The other hole is for
a strain relief clamp (not supplied) to secure incoming electri-
cal supply.
2. Follow steps 2 through 6 in Installing Blower Assembly, begin-
ning on page 12. Also remove black wire from middle switch
terminal 2.
3. Remove black plastic strain relief and power cord from switch
plate. The power cord supplied will not be used in built-in in-
stallations. Pop in the plastic snap bushing found in hardware
kit into the hole left by supply cord/strain relief.
4. A licensed electrician must follow the wiring diagram to con-
nect incoming electrical supply to fan kit wiring harness (see
Figure 20).
Figure 21 - Installing Blower Bracket Assembly
Figure 20 - Wiring Diagram For Blower Accessory Built-In
Installation
Red
Red
Fan Switch
(Auto/Off/On)
Blue
Blue
Thermostat
Switch
(N.O.)
Green
White Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
1
23
Auto
For Built-In Installation
WARNING: A licensed electrician must connect
the wiring harness to electrical supply following all
localcodes.Electricianmustprovideaclamponthe
box cover to secure the wiring. Wiring should be
routed through the bushing in the hole on the outer
casing of heater.
5. Plug power cord to the outlet receptacle (not provided) as shown
in Figure 21. Wind the extra cable in power cord and and tie it up
with the plastic wire strap (see Figure 21). Set the cable bundle
betweentheburnerbracketandoutercasing,awayfromtheburner.
6. Reinstall valve cover shield.
7. Test to make sure the blower is working properly.
8. Reinstallupperlouverassemblyandhood if previously removed,
(see Figure 16, page 11). Close lower louver door.
INSTALLATION
Installing Blower Accessory - GA3450T (Cont.)

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14
CONNECTING TO GAS SUPPLY
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.
CAUTION:Useonlynew,blackironorsteelpipe.
Internally-tinned copper tubing may be used in cer-
tain areas. Check your local codes. Use pipe of 1/2"
or greater diameter to allow proper gas volume to
fireplace. If pipe is too small, undue loss of volume
will occur.
WARNING: Usepipe jointsealantthat isresistant
to liquid petroleum (LP) gas.
For propane/LP units, installer must supply an external regulator.
Theexternalregulatorwillreduceincominggaspressure.Youmust
reduceincominggaspressure tobetween11and14 inchesofwater.
If you do not reduce incoming gas pressure, fireplace regulator
damage could occur. Install external regulator with the vent point-
ing down as shown in Figure 23. Pointing the vent down protects it
from freezing rain or sleet.
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 24).
IMPORTANT: Install an equipment shutoff valve in an accessible
location.The equipmentshutoffvalveis forturningonand 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 fireplace valves.
Propane/LP
Supply Tank
Vent Pointing Down
External Regulator
ATTACHING WOOD BASE TO SOLID FLOOR
For attaching base to solid floors (concrete or masonry)
Note: Flooranchorsandmountingscrewsareinhardwarepackage.
The hardware package is provided with fireplace.
1. Drill holes at marked locations using 5/16" drill bit. For solid
floors (concrete or masonry), drill at least 1" deep.
2. Fold floor anchor as shown in Figure 22.
3. Insert floor anchor (wings first) into hole. Tap anchor flush
to floor.
4. Insert mounting screws through base and into floor anchors.
5. Tighten screws until base is firmly fastened to floor.
Figure 22 - Folding Anchor
Figure 23 - External Regulator with Vent Pointing Down
INSTALLATION
Continued
WARNING:Thisappliancerequiresa45°maleflare
fitting5/8"-18UNF (UnifiedNational FineThread) inlet
connection and the flexible gas line provided.
Extension Cord
Use extension cord if needed. The cord must have a three-prong,
groundingplugandathree-holereceptacle.Makesurecordisingood
shape. It must be heavy enough to carry the current needed. An
undersized cord will cause a drop in line voltage. This will result in
loss of power and overheating. Use a No. 16 AWG cord for lengths
less than 50 feet.
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
INSTALLATION
Installing Blower Accessory - GA3450T (Cont.)
Attaching Wood Base to Solid Floor
Connecting to Gas Supply

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15
We recommend that you install a sediment trap in supply line as
showninFigure24.Locatesedimenttrapwhereitiswithinreachfor
cleaning.Installinpipingsystembetweenfuelsupplyandfireplace.
Locatesediment trap wheretrapped matter isnot likelyto freeze.A
sediment trap traps moisture and contaminants. This keeps them
from going into fireplace controls. If sediment trap is not installed
or is installed wrong, fireplace may not run properly.
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, page 29.
Figure 24 - Gas Connection
INSTALLATION
Continued
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
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)
3" Minimum
Pipe Cap Tee
Nipple Joint
Sediment Trap
Figure 25 - Removing Log Base Assembly From Fireplace
CONNECTING EQUIPMENT SHUTOFF VALVE
TO HEATER CONTROL
Installation Items Needed
• 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 branch support to fireplace (see
Figure 25). Carefully lift up branch support and remove from
fireplace (see Figure 25).
3. Route flexible gas line, included, from fireplace control to
equipment shutoff valve through side or rear access holes
in outer casing.
NOTICE: Most building codes do not permit con-
cealed gas connections. A flexible gas line is pro-
vided to allow accessibility from the fireplace (see
Figure25). Theflexible gassupplylineconnectionto
the equipment shutoff valve should be accessible.
Figure 26 - Attaching Flexible Gas Line to Equipment Shutoff
Valve
Branch
Support
Screen
Screen
Shipping
Screw
Shoulder
Screw
Flexible
Gas Line
4. Apply pipe joint sealant lightly to male threads of gas connec-
tor attached to flexible gas line/equipment shutoff valve (see
Figure 26).
5. Check all gas connections for leaks. See Checking Gas Con-
nections, page 16.
6. Replace branch support back into fireplace. Feed flexible gas
lineinto fireplace baseareawhilereplacing branch support.Make
sure the entire flexible gas line is in fireplace base area. Reat-
tach branch support to fireplace with screws removed in step 2.
CAUTION: Avoid damage to regulator. Hold gas
regulator with wrench when connecting it to gas
piping and/or fittings.
➞
➞
Flexible Gas Line from
Fireplace Gas Regulator
Provided with Fireplace
To Fireplace
Gas Regulator Equipment Shutoff Valve
Provided by Installer
PROPANE/LP
To External
Regulator
NATURAL
To Gas Supply
INSTALLATION
Connecting to Gas Supply (Cont.)
Connecting Equipment Shutoff Valve to Heater Control

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CHECKING GAS CONNECTIONS
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.Pressuresin excess of1/2psigwilldamageheater regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurize supply piping system by either opening propane/
LP supply tank valve for propane/LP gas or opening main gas
valve located on or near gas meter for natural gas, or using
compressed air.
4. Check all joints of gas supply piping system.Apply a noncor-
rosiveleak detection fluidto gasjoints. Bubblesforming show
a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve to gas supply.
Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 27).
2. Pressurize supply piping system by either opening propane/
LP supply tank valve for propane/LP gas or opening main gas
valve located on or near gas meter for natural gas, or using
compressed air.
3. Check all joints from gas meter for natural or propane/LP sup-
ply to equipment shutoff valve (see Figures 28 and 29). Ap-
ply a noncorrosive leak detection fluid to gas joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
WARNING: Test all gas piping and connections
forleaksafterinstallingorservicing.Correctallleaks
at once.
WARNING: Never use an open flame to check for
aleak.Applya noncorrosiveleakdetectionfluid toall
joints. Bubbles forming show a leak. Correct all leaks
at once.
CAUTION: Makesure externalregulatorhas been
installed between propane/LP supply and fireplace.
See guidelines under Connecting to Gas Supply ,
page 14.
INSTALLATION
Continued
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 27).
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 thermostat
gas valve (see Figures 28 and 29). Apply a noncorrosive leak
detection fluid to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, pages 17 and 18).
Check all other internal joints for leaks.
7. Turn off fireplace (seeTo Turn Off Gas toAppliance, page 18).
8. Replace front panel.
Equipment
Shutoff
Valve
Figure 27 - Equipment Shutoff Valve
Figure 28 - Checking Gas Joints Shown with Optional Mantel
(Propane/LP Gas)
Equipment
Shutoff Valve
Propane/LP
Supply Tank
ON
POSITION
OFF
POSITION
Open
Closed
Figure 29 - Checking Gas Joints Shown with Optional Mantel
(Natural Gas)
Gas Meter
Equipment Shutoff Valve
INSTALLATION
Checking Gas Connections

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17
OPERATING FIREPLACE
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.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information above.
2. Make sure equipment shutoff valve is fully open.
3. Turn control knob 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 thesafetyinformationabove. Ifyoudon’t smell
gas, go to the next step.
Ignitor Button
Figure 30 - Control Knob In The OFF Position
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 IFYOU 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 yourhandto pushin or turnthe gascontrolknob.
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.
Control
Knob
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.
Orange flame will also be present. Open window to
ventsmell.OperatefireplaceonHIpositiontoburnoff
odor. This will only last a few hours.
5. Turn control knob counterclockwise to the PI-
LOT position. Press in control knob for five (5) seconds
(see Figure 30).
Note: You may be running this fireplace 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 up when released, contact a
qualified service person or gas supplier for repairs.
6. With control knob pressed in, push down and release ig-
nitor button. This will light pilot. The pilot is attached to
the front of burner. If needed, keep pressing ignitor but-
ton until pilot lights.
Note: Ifpilotdoes not staylit,refertoTroubleshooting,pages
20 through22.Also contacta qualifiedservice personor gas
supplier for repairs. Until repairs are made, light pilot with
match. To light pilot with match, see Manual Lighting Pro-
cedure, page 18.
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. This fire-
place has a safety interlock system. Wait one (1) minute
before lighting pilot again.
8. Turn control knob counterclockwise to desired
heating level. The main burner should light. Set control
knob to any heat level between HI and LO.
Thermocouple
Pilot Burner
Figure 31 - Pilot
Ignitor Electrode
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
OPERATING FIREPLACE
For Your Safety Read Before Lighting
Lighting Instructions

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TO TURN OFF GAS
TO APPLIANCE
The thermostatic control used on this fireplace differs from
standard thermostats. Standard thermostats simply turn on
andofftheburner. The thermostat usedonthisfireplacesenses
the room temperature. The thermostat adjusts the amount of
gas flow to the burner. This increases or decreases the burner
flame height. At times the heater will cycle back on when room
temperature drops below the set temperature.
ThecontrolknobcanbesettoanyheatlevelbetweenHIandLO.
Note: The thermostat sensing bulb measures the temperature
ofairnearthefireplacecabinet.Thismaynotalwaysagreewith
room temperature (depending on housing construction, instal-
lation location, room size, open air temperatures, etc.). Fre-
quent use of your fireplace will let you determine your own
comfort levels.
OPERATING FIREPLACE
Continued
1. Followsteps1through5underLightingInstructions,page17.
2. With control knob pressed in, strike match. Hold match to
pilot until pilot lights.
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, page 17.
Shutting Off Fireplace
1. Turn control knob clockwise
Clockwise
to the OFF position.
2. Turn off all electric power to the appliance if service is to
be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise
Clockwise
to the PILOT position.
THERMOSTAT
CONTROL OPERATION
MANUAL LIGHTING
PROCEDURE
INSPECTING BURNER
Thermocouple
Pilot Burner
Figure 32 - Correct Pilot
Flame Pattern (Propane/LP
Shown)
Figure 33 - Incorrect Pilot
Flame Pattern (Propane/LP
Shown)
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 32 shows a correct pilot flame pattern. Figure 33 shows an
incorrectpilot flamepattern.Theincorrect pilotflameisnot properly
heating the thermocouple. This will cause the thermocouple to cool.
When the thermocouple cools, the fireplace will shut down.
If pilot flame pattern is incorrect, as shown in Figure 33
• turn fireplace off (see To Turn Off Gas to Appliance)
• see Troubleshooting, pages 20 through 22
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.
Thermocouple
Pilot Burner
Figure 34 - Correct Burner Flame Pattern
Figure35 -Incorrect Burner Flame Pattern
BURNER FLAME PATTERN
Figure34 shows a correctburner flamepattern. Figure35 showsan
incorrect burner flame pattern. The incorrect burner flame pattern
shows sporadic, irregular flame tipping. The flame should not be
dark or have an orange/reddish tinge.
Note: When using the fireplace the first time, the flame will be
orange for approximately one hour until the log cures.
If burner flame pattern is incorrect, as shown in Figure 35
• turn fireplace off (see To Turn Off Gas to Appliance)
• see Troubleshooting, pages 20 through 22
OPERATING FIREPLACE
To Turn Off Gas To Appliance
Thermostat Control Operation
Manual Lighting Procedure
INSPECTING BURNER
Pilot Flame Pattern
Burner Flame Pattern

111044-01A
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19
19
CLEANING AND
MAINTENANCE
CABINET
Air Passageways
• Use a vacuum cleaner or pressurized air to clean.
Exterior
• Use a soft cloth dampened with a mild soap and water mixture.
Wipe the cabinet to remove dust.
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 airinletholes allowtheproperamount ofairto mixwith
the gas. This provides a clean burning flame. Keep these holes clear
of dust, dirt, lint, and pet hair. Clean these air inlet holes prior to each
heating season. Blocked air holes will create soot. We recommend
that you clean the unit every three months during operation and have
heater inspected yearly by a qualified service person.
We also recommend that you keep the burner tube and pilot
assembly clean and free of dust and dirt. To clean these parts we
recommendusingcompressedairnogreaterthan30PSI.Yourlocal
computer store, hardware store, or home center may carry com-
pressed air in a can. You can use a vacuum cleaner in the blow
position. If using compressed air in a can, please follow the direc-
tionsonthecan. If you don't follow directions on the can, you could
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 36).
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.
Figure 36 - Injector Holder On Outlet Burner Tube
Burner Tube
Injector Holder
Primary Air Inlet Holes
Ports/Slots
Figure 37 - Pilot Inlet Air Hole (Propane/LP Shown)
Pilot Assembly Pilot Air Inlet Hole
CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder and Pilot Air Inlet Hole
Cabinet
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
airinletholeabouttwoinchesfromwherethepilotflamecomes out
ofthepilotassembly(seeFigure37).Withtheunitoff,lightlyblow
airthroughtheairinlethole.Youmayblowthroughadrinkingstraw
if compressed air is not available.
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in soot-
ing and property damage.

111044-01A
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20
TROUBLESHOOTING
WARNING: Turn off and un-
plugfireplace andlet coolbefore
servicing. Only a qualified ser-
vice person should service and
repair fireplace.
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot.ThiscandamageODS/
pilot unit.
POSSIBLE CAUSE
1. Ignitor cable pinched or wet
2. Ignitor electrode not connected to igni-
tor cable
3. Broken ignitor cable
4. Bad piezo ignitor
5. Ignitor electrode broken
6. 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 knob not pressedin longenough
3. Safety interlocksystemhasbeen triggered
4. Equipment shutoff valve not fully open
5. Thermocouple connection loose at con-
trol valve
6. 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
7. Thermocouple damaged
8. Control valve damaged
REMEDY
1. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
2. Reconnect ignitor cable
3. Replace ignitor cable
4. Replace piezo ignitor
5. Replace pilot assembly
6. Replace pilot assembly
1. Turn on gas supply or open equipment
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is
removed
5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 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. Wait oneminute forsafety interlocksys-
tem to reset. Repeat ignition operation
4. Fully open equipment shutoff valve
5. Hand tighten until snug, then tighten 1/4
turn more
6. A) Contact local propane/LP or natural
gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 19) or replace ODS/
pilot assembly
7. Replace pilot assembly
8. Replace control valve
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition
ODS/pilot lights but flame goes out when
control knob is released
Note: For additional help, visit DESA
HeatingProducts’technicalserviceweb
site at www.desatech.com.
Note: Alltroubleshootingitemsarelistedin
order of operation.
TROUBLESHOOTING