Desa Comfort Glow CF26NT Quick start guide

WARNING:Iftheinformationinthismanualisnot
followed exactly, a fire or explosion may result
causing property damage, personal injury, or
loss of life.
— Do not store or use gasoline or other
flammablevaporsandliquidsinthevicinityof
this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Donottouchanyelectricalswitch;donotuse
any phone in your building.
• Immediately call your gas supplier from a
neighbor’sphone.Followthegassupplier’s
instructions.
• If you cannot reach your gas supplier, call
the fire department.
— Installationandservicemustbeperformedby
aqualifiedinstaller,serviceagency,orthegas
WARNING:Improperinstallation,adjust-
ment,alteration,service,ormaintenance
can cause injury or property damage.
Refer to this manual for correct installa-
tionandoperationalprocedures.Foras-
sistance or additional information con-
sultaqualified installer, serviceagency,
or the gas supplier.
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 4 of this manual.
CF26PT
CF26NT
19,000 to 26,000 Btu/Hr
withThermostat
AUTO
OFF
ON
UNVENTED (VENT-FREE) FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
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BAY FRONT PROPANE/LP AND NATURAL GAS
FIREPLACE MODELS
Patent Pending
Fireplace Shown With Optional
Bay Front Mantel

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DANGER: Carbon monoxide poisoning may lead
to death!
SAFETY INFORMATION
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoningresemble theflu, 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 ser-
vice this fireplace. Improper use of this fireplace can
cause serious injury or death from burns, fire, explo-
sion,electricalshock,andcarbonmonoxidepoisoning.
WARNING: Any change to this fireplace or its
controls can be dangerous.
WARNING:Donotallow fans to blow directly into
the fireplace. Avoid any drafts that alter burner flame
patterns. Ceiling fans can create drafts that alter
burner flame patterns. Altered burner patterns can
cause sooting.
WARNING: Do not use a blower insert, heat
exchanger 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.
Do not place clothing or other flammable material on
or near the appliance. Never place any objects in the
fireplace.
Fireplace front and screen becomes very hot when
running fireplace. Keep children and adults away
fromhot surfacestoavoid burnsorclothing 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.
TABLE OF CONTENTS
SAFETY INFORMATION
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 4
UNPACKING ............................................................................... 4
PRODUCT FEATURES .............................................................. 4
AIR FOR COMBUSTION AND VENTILATION ........................... 4
INSTALLATION ........................................................................... 6
OPERATING FIREPLACE ........................................................ 16
INSPECTING BURNERS.......................................................... 17
CLEANING AND MAINTENANCE ............................................ 17
SPECIFICATIONS .................................................................... 18
SERVICE HINTS....................................................................... 18
TECHNICAL SERVICE ............................................................. 18
TROUBLESHOOTING .............................................................. 19
ILLUSTRATED PARTS BREAKDOWNAND PARTS LIST ....... 22
REPLACEMENT PARTS .......................................................... 26
PARTS CENTRALS .................................................................. 26
OWNER’S REGISTRATION FORM.......................................... 27
ACCESSORIES ........................................................................ 29
WARRANTY INFORMATION.................................................... 30

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3
AUTO
OFF
ON
PRODUCT IDENTIFICATION
Figure 1 - Vent-Free Bay Front Compact Fireplace
Heater Controls
(Inside Door)
Screen
Fireplace
Cabinet
Logs
1. This appliance is only for use with the type of gas indicated on
the rating plate. This appliance is not convertible for use with
other gases.
2. Do not place propane/LP supply tank(s) inside any structure. Lo-
catepropane/LPsupplytank(s)outdoors(propane/LPunitsonly).
3. 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 these added items can cause soot-
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 thecreation ofsoot, follow theinstructions inClean-
ing and Maintenance, pages 17 and 18.
9. Before using furniture polish, wax, carpet cleaner, or similar
products, turn heater off. If heated, the vapors from these prod-
ucts may create a white powder residue within burner box or
on adjacent walls or furniture.
10. This fireplace needs fresh air ventilation to run properly. This
fireplace has an Oxygen Depletion Sensing (ODS) safety
shutoffsystem.The ODS shutsdown thefireplace if notenough
fresh air is available. See Air for Combustion and Ventilation,
pages 4 through 6. If fireplace keeps shutting off, see Trouble-
shooting, pages 19 through 21.
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. 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.
14. Turnoffand unplug fireplaceand let coolbeforeservicing. Only
a qualified service person should service and repair fireplace.
15. Operating fireplace above elevations of 4,500 feet could cause
pilot outage.
16. Do not operate fireplace if any log is broken. Do not operate
fireplace if a log is chipped (dime-sized or larger).
17. To prevent performance problems, do not use propane/LPfuel
tank of less than 100 lbs. capacity (propane/LP units only).
18. Provide adequate clearances around air openings.
Brick Liner
Keeptheappliance area clear and free fromcombus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
Youmustoperatethisfireplacewithafireplacescreen
inplace.Makesurefireplacescreenisinplacebefore
running fireplace.
SAFETY INFORMATION
Continued
SAFETY INFORMATION
PRODUCT IDENTIFICATION

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UNPACKING
1. Remove and fireplace from carton.
2. Remove all protective packaging applied to fireplace for
shipment.
3. Make sure your fireplace includes one hardware packet.
4. Check fireplace for any shipping damage. If fireplace is dam-
aged, promptly inform dealer where you bought fireplace.
PRODUCT FEATURES
SAFETY PILOT
This fireplace has a pilot with an Oxygen Depletion 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.
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New
materials, increased insulation, and new construction methods help
reduce heat loss in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out and the warm air
in.During heating months,homeownerswanttheirhomesasairtight
as possible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,andfuelburningappliances
drawairfromthehousetooperate.Youmustprovideadequatefresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation
classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 6 will help you classify your
space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough
fresh air for combustion and ventilation. However, in buildings of
unusually tight construction, you must provide additional fresh air.
Unusually tight construction is defined as construction
where:
a. walls and ceilings exposedtotheoutsideatmosphere
have a continuous water vapor retarder with a rating
of one perm (6x10-11 kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been added on openable win-
dows and doors and
WARNING: This heater shall not be installed in a
confinedspaceorunusuallytightconstructionunless
provisionsareprovidedforadequatecombustionand
ventilation air. Read the following instructions to in-
sure proper fresh air for this and other fuel-burning
appliances in your home.
LOCAL CODES
Installandusefireplacewithcare.Followalllocalcodes.Intheabsence
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
LOCAL CODES
UNPACKING
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation

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5
Confined and Unconfined Space
NationalFuel GasCode,ANSIZ223.1/NFPA54definesaconfined
space as a space whose volume is less than 50 cubic feet per 1,000
Btu per hour (4.8 m3per kw) of the aggregate input rating of all
appliancesinstalledinthatspaceandanunconfinedspaceasaspace
whose volume is not less than 50 cubic feet per 1,000 Btu per hour
(4.8 m3per kw) of the aggregate input rating of all appliances
installed in that space. Rooms communicating directly with the
space in which the appliances are installed*, through openings not
furnishedwithdoors,areconsideredapart of the unconfined space.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
DETERMINING FRESH-AIR FLOW FOR
HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Usethis work sheetto determineif youhave aconfined orunconfined space.
Space:Includestheroominwhichyouwillinstallheaterplusanyadjoining
rooms with doorless passageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = ___________ cu. ft. (volume of space)
Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling
height) = 2560 cu. ft. (volume of space)
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: 2560 cu. ft. (volume of space) x 20 = 51,200 (maximum
Btu/Hr the space can support)
AIR FOR COMBUSTION AND
VENTILATION
Continued
WARNING: If the area in which the heater may be
operated is smaller than that defined as an uncon-
fined space or if the building is of unusually tight
construction,provideadequatecombustionandven-
tilation air by one of the methods described in the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 Sec-
tion 5.3 or applicable local codes .
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater _____________ Btu/Hr
Gas water heater* _____________ Btu/Hr
Gas furnace _____________ Btu/Hr
Vented gas heater _____________ Btu/Hr
Gas fireplace logs _____________ Btu/Hr
Other gas appliances* + _____________ Btu/Hr
Total = _____________ Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws com-
bustion air from the outdoors and vents to the outdoors.
Example:
Gas water heater _____________ Btu/Hr
Vent-free heater + _____________ Btu/Hr
Total = _____________ Btu/Hr
4. Compare the maximum Btu/Hr the space can support with the actual
amount of Btu/Hr used.
__________________ Btu/Hr (maximum the space can support)
__________________ Btu/Hr (actual amount of Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the space can support)
56,000 Btu/Hr (actual amount of Btu/Hr used)
Thespace in the above example isa confined space because the actualBtu/
Hrusedismorethanthemaximum Btu/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. See VentilationAir From
Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors, page 6.
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.
c. caulking or sealants are applied to areas such as
joints around window and door frames,between sole
platesandfloors,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 .
Ifyourhome does not meet all of thethreecriteriaabove,
proceed to Determining Fresh-Air Flow for Heater Loca-
tion , below.
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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INSTALLATION
Note: Your Comfort Glow fireplace is designed to be used in zero
clearance installations. Wall or framing material can be placed
directlyagainstanyexteriorsurfaceofyourfireplace,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 8).
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:Thisheaterisintendedforuseas supplemen-
tal 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.
Figure 3 - 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 2 - 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 2). You can also remove door into
adjoining room (see option 3, Figure 2). Follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
Ventilation Air From Outdoors
Provideextrafreshairbyusing ventilationgrillsorducts.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
outdoorsorspacesopentotheoutdoors.Thesespacesinclude attics
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.
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air
INSTALLATION
Check Gas Type

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7
Youcanrecessfireboxintothewall.Youcanalsopositionfireplace
in the optional cabinet mantels. IMPORTANT: Only use optional
cabinet 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 42 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 cause mildew to form from too much moisture. See Air
for Combustion and Ventilation, pages 4 through 6.
LOCATING FIREPLACE
WARNING: Maintain the minimum clearances
shown in Figures 4 and 5. If you can, provide greater
clearances from floor, ceiling, and joining wall.
INSTALLATION
Continued
Figure 5 - Mounting Clearances As Viewed From Front of
Fireplace Shown with Optional Mantel
Figure 4 - Mounting Clearances As Viewed From Front of
Fireplace Shown Built In The Wall
6"
Minimum
From
Sides Of
Fireplace
Left
Side
CEILING
42" Minimum
FLOOR
Right
Side
Top Of
Mantel Can
Be Flush
With Wall
Left
Side
CEILING
Right
Side
42"
Minimum
0" Minimum Clearance To Top Surface Of Carpeting,
Tile Or Other Combustible Material
0" Minimum Clearance To Top Surface Of
Carpeting, Tile Or Other Combustible Material
INSTALLATION
Locating Fireplace
CAUTION: If you install the fireplace in a home
garage
•fireplace pilot and burner must be at least 18
inches above floor.
•locatefireplacewheremovingvehiclewillnothitit.
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.
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.

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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, pages 14 and 15.
IMPORTANT: When finishing your firebox, combustible materi-
alssuchaswallboard,gypsumboard,sheetrock,drywall,plywood,
etc. may be butted up next to the sides and top of the firebox.
Combustible materials should never overlap the firebox front fac-
ing. Firebox should not be placed on top of carpet or other kinds of
fibrous material.
INSTALLATION
Continued
36
5
/ 8 "25
7
/ 8 "
51
3
/ 4 "
26
7
/ 8 "
Figure 7 - Rough Opening for Installing in Corner
1. Frame in rough opening. Use dimensions shown in Figure 6
for the rough opening.
If installing in a corner, use dimensions shown in Figure 7 for
the rough opening. The height is 26 1/8" which is the same as
the wall opening above.
2. An optional blower accessory is available (see Accessories,
page 29). There are two options for connecting blower to elec-
trical source.
Option one: Have a licensed electrician install a properly
grounded, three-prong 120-volt electrical outlet at fireplace
location. Locate outlet inside the framed enclosure. Blower
power cord will plug into this outlet.
Option two: Havea licensed electrician connectblower toelec-
trical source at junction box inside fireplace.
If using option one, have electrical outlet installed at this time.
If using option two, do not connect blower to electrical source
at junction box until step 6.
3. Install gas pipingto fireplacelocation.This installation 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. Carefully set fireplace in front of rough opening with back of
fireplace inside wall opening.
5. Attach flexible gas line to fireplace gas regulator. See Con-
necting Fireplace to Gas Supply, pages 13 and 14.
6. If the optional blower has been installed connect blower to
electrical source.
Option one: Route blower electrical cord through side or rear
access door of fireplace. Plug electrical cord into electrical outlet.
Option two:Have a licensed electrician connectblower toelec-
trical source at junction box inside fireplace.
7. Bend four nailing flanges on outer casing with pliers (see
Figure 8, page 9).
267 / 8"
267
/ 8"
3/4" Off
The Floor
Minimum
10 1 / 2"
Figure 6 - Rough Opening for Installing in Wall
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
with wall. Follow the instructions below to install the fireplace in
this manner. If installing a built-in mantel above the fireplace, you
must follow the clearances shown in Figure 9, page 9. If using for
built-in installation off of the floor, follow clearances shown in
Figure 4, page 7.
Figure 8 - Attaching Fireplace to Wall Studs
WARNING: Do not allow any combustible materi-
als to overlap the firebox front facing.
Height Front Width Depth Bottom
Actual 26" 26 3/49 1/2" 3/4"
Framing 26 7/8" 26 7/8" 10 1/2" 3/4"
Nails or Wood
Screws
AUTO
OFF
ON
Nailing
Flanges
INSTALLATION
Built-In Fireplace Installation (Cont.)

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9
IMPORTANT: Noncombustible materials such as brick, tile, etc.
may overlap the front facing, but should never cover any necessary
openings like louvered slots.
WARNING: Donotallownoncombustiblematerials
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.
INSTALLATION
Continued
13" 16" 19" 21"
2 1/2"
6"
8"
10"
Minimum Non-
Combustible
Material
Mantel Shelf
Note: All vertical
measurements are from
top of fireplace opening
to bottom of mantel shelf.
NOTICE:Ifyourinstallationdoesnotmeettheminimum
clearances shown, you must do one of the following:
•raise the mantel to an acceptable height
•remove the mantel
NOTICE:Surfacetemperatures of adjacent walls and
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Followallminimumclearancesshowninthismanual.
Mantel Clearances for Built-In Installation
Ifplacing mantel abovebuilt-in fireplace,you must meetminimum
clearance between mantel shelf and top of fireplace opening.
Figure 9 - Minimum Mantel Clearances for Built-In Installation
REMOVING BRICK LINER RETAINER
1. Using Phillips screw driver, remove 2 screws attaching brick
liner retainers to vertical sides.
2. Remove brick liner retainers and discard. Replace 2 screws into
vertical sides.
ASSEMBLING TRIM
(Trim shipped with mantel)
1. Remove packaging from three pieces of 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 10.
4. Slide one end of adjusting plate/shim in slot on mitered edge
of top trim (see Figure 10).
5. Slide other end of adjusting plate/shim in slot on mitered edge
of side trim (see Figure 10).
6. While firmly holding edges of 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 10 - Assembling Trim
Top Trim
Side Trim
Mitered Edge
Shim
Set Screws
Adjusting
Plate
Slot
Slot
INSTALLATION
Built-In Fireplace Installation (Cont.)
Removing Brick Liner Retainer
Assembling Trim
Optional Mantel Installation
OPTIONAL MANTEL INSTALLATION
Note: Refer to instructions provided with the mantel for assembly
instructions. Refer to instructions below for system installation. If
using blower accessory (see Accessories, page 29), see installation
instructions on pages 11 and 12.
1 . Choose location for fireplace and install gas supply line.
2. Remove screen from fireplace by removing screws in each
end of screen rod (see Figure 11, page 10). Hold screen rod
cover while removing five hex head screws underneath hood
(see Figure 12, page 10). Carefully lift and pull out hood (see
Figure 13, page 10).
3. Assemble trim kit. See Assembling Trim, above.
4. Place trim on the shoulder screws located on the side and top
of the fireplace. Firmly snap the trim over the shoulder screws
on fireplace (see Figure 14, page 10).
5. Place mantel base close to wall in desired fireplace location.
6. Install gas line. See Connecting To Gas Supply, pages 12 and 13.

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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 12.
1. Screen and hood should be removed from fireplace (see page
10). Remove log set and set aside.
2. Install snap bushings found in hardware kit into both holes in
rear of blower control shield (see Figure 15).
3. Make sure the wire harness is firmly connected to the terminals
on the blower bracket assembly.
Snap Bushing
Figure 15 - Installing Snap Bushings
Blower Control
Shield
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause im-
proper and dangerous operation.
CAUTION: Verify proper operation after servicing.
Figure 14 - Attaching Trim to Fireplace
AUTO
OFF
ON
Shoulder Screws
Assembled Trim
INSTALLING BLOWER ASSEMBLY - GA3450T
INSTALLATION
Continued
Figure 12 - Removing Hood Screws
Hood
Screen Rod
Cover
Hex Head
Screw
Figure 13 - Removing Hood
Mantel Screw
Location
Figure 11 - Removing Screen
7. Carefully place fireplace on mantel base and center left to
right. Check for gas leaks. See Checking Gas Connections,
pages 14 and 15.
8. Refer to instructions provided with the mantel for permanent at-
tachment to wall.
9. Slide mantel around fireplace. Be careful not to damage wall
or mantel.
10. Adjust assembly to remove any gaps. From back side of fire-
place,attach two 2"wood screwsthrough base mountingblocks
attached to bottom sides of mantel into base (see instructions
provided with mantel).
11. Attach remaining two 3" wood screws from hardware pack
through openings inside of fireplace sides into the mantel. See
Figure 13 for screw hole location.
Screws Screws
INSTALLATION
Optional Mantel Installation (Cont.)
Installing Blower Assembly - GA4350T

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11
INSTALLATION
Continued
4. Note the wire locations on back of AUTO/OFF/ON switch.
Carefully remove red wire from the AUTO terminal and blue
wire from the ON terminal. Black wire can remain on the
middle or OFF terminal (see Figure 16).
5. Carefully disconnect green and white wires from power cord
harness at their insulated connectors.
6. In top of the heater cabinet, locate the four mounting holes on the
outer casing. Align these four holes with those on the blower
bracket assembly. Attach blower bracket assembly to the outer
casing with 4 - #10 screws provided (see Figure 16).
7. Route the wire harness through the hole to the left side of heat
deflector. Pull wire harness through lower opening to the left
of the blower control shield. (see Figure 16).
8. Insert the 4 wire harness into one of the round holes in the rear
of the blower control shield and through the rectangular hole
in the front of shield (see Figure 16).
9. Reconnect red wire to the AUTO switch position. Reconnect
blue wire tothe ON switch position. Reconnect green andwhite
wires to the power cord.
Figure 16 - Installing Blower Bracket Assembly
AUTO
OFF
ON
Wire Harness
Blower Bracket
Assembly
Screw
Power
Cord
Blower
Control
Shield Shield Cover
Wire
Harness
Switch
Plate
Switch
Heat
Deflector
Wiring Routing Hole
Blue Red
Blower
Control
Shield
Figure 17 - Installing Switch Plate to Blower Control Shield
Switch Plate
Screw
INSTALLATION
Installing Blower Assembly - GA3450T (Cont.)
10. Install the switch plate on the blower control shield with 2 - #10
screws provided (see Figure 17). Route power cord out of the
cabinet by inserting it through the bushing on the outer casing
(see Figure 16). Plug fan kit into 120-Volt grounded power sup-
ply and test operation. Note: When switch is in theAUTO posi-
tion, the fan will start after the heater has run for a few mo-
ments. The fan will continue to run for several moments after
the heater has been turned off. When switch is in the ON posi-
tion, the fan will run until turned to OFF. Reinstall hood assem-
bly and close lower louver door.
11. Place log set back on the unit.
WARNING: A licensed electrician must connect
the wiring harness to electrical supply following all
local codes. Electrician must provide a clamp on the
box cover to secure the wiring. Wiring should be
routed through the bushing in the hole on the outer
casing of heater.
1. Install a snap bushing found in hardware kit into one of the
holes found on rear of blower control shield. The other hole is
for a strain relief clamp (not supplied) to secure incoming elec-
trical supply.
2. Follow steps 2 through 6 in Installing Blower Assembly begin-
ning on page 10. Also remove black wire from middle/OFF
switch terminal.
3. Remove black plastic strain relief and power cord from switch
plate (see Figure 18, page 12). The power cord supplied will
not be used in built-in installations. 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 in
Figure 19, page 12 to connect incoming electrical supply to
fan kit wiring harness.
For Built-In Installation

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AUTO
OFF
ON
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.
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, fireplace regu-
lator damage could occur. Install external regulator with the vent
pointing down as shown in Figure 20, page 13. Pointing the vent
down protects it from freezing rain or sleet.
WARNING: This appliance requires a 1/2" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
INSTALLATION
Continued
Figure 18 - Installing Blower Bracket Assembly
Figure19-WiringDiagramForFanAccessoryBuilt-InInstallation
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
Blower Bracket
Assembly
Screw
Wire
Harness
Power Cord
Blower
Control
Shield
Shield
Cover
Wire
Harness
Switch
Plate
Switch
Clamp Connector
(not included)
Outlet
Receptacle
Blue Red
Strain
Relief
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
INSTALLATION
Installing Blower Assembly - GA3450T (Cont.)
Connecting to Gas Supply
Installation Items
Before installing fireplace, make sure you have the items listed
below.
• external regulator - propane/LP only (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• ground joint union
• sediment trap
• tee joint
• pipe wrench
• test gauge connection*
* ACSAdesign-certifiedequipmentshutoffvalvewith1/8"NPT
tapisanacceptablealternativetotestgaugeconnection.Purchase
the optional CSA design-certified equipment shutoff valve from
your dealer. See Accessories, page 29.
Note: If desired, purchase a four-sided trim kit for built-in
installations. See Accessories, page 29.
5. Test to make sure the blower is working properly.
6. Reinstall hood assembly (see pages 9and10) and close lower
louver door.
7. Place log set back on the unit.

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13
Figure 20 - External Regulator with Vent Pointing Down
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: Use pipejointsealant that is resistant
to liquid petroleum (LP) gas.
Installation must include a 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 21).
IMPORTANT: Install equipment shutoff valve in an accessible
location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
Check your building codes for special requirements for locating
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.
We recommend that you install a sediment trap in supply line as
showninFigure21.Locatesedimenttrapwhereitiswithinreachfor
cleaning. Install in piping system between fuel supply and heater.
Locatesediment trapwhere trappedmatter isnot likelyto freeze.A
sediment trap traps moisture and contaminants. This keeps them
from going into fireplace controls. If sediment trap is not installed
or is installed wrong, fireplace may not run properly.
Propane/LP
Supply Tank
Vent Pointing
Down
External
Regulator
INSTALLATION
Continued
Cap Pipe Tee
Nipple Joint
3" Minimum
Sediment Trap
Gas Control
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)
CSA Design-Certified
Equipment Shutoff Valve With
1/8" NPT Tap*
Approved Flexible
Gas Hose
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, page 29.
** Minimum inlet pressure for purpose of input adjustment.
Figure 21 - Gas Connection
AUTO
OFF
ON
Figure 22 - Routing Flexible Gas Line
CONNECTING FIREPLACE TO GAS SUPPLY
Installation Items Needed
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not provided)
1. Route flexible gas line (provided by installer) from equip-
ment shutoff valve into fireplace through side or rear access
holes in outer casing (see Figure 22).
Equipment
Shut Off
Valve
Outer
Casing
To Gas
Supply
INSTALLATION
Connecting to Gas Supply (Cont.)
Connecting Fireplace to Gas Supply

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O
POSI
P
O
Open
Closed
Equipment
Shutoff Valve
Figure 24 - Equipment Shutoff Valve
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main gas valve (con-
trol valve) and equipment shutoff valve from gas supply
piping system. Pressures in excess of 1/2 psig will damage
fireplace regulator.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections,
internal andexternal tounit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING:Neveruse anopenflameto checkfor
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
CAUTION: Makesureexternal regulatorhasbeen
installed between propane/LP supply and fireplace.
See guidelines under Connecting to Gas Supply ,
pages 12 and 13.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurizesupplypipingsystembyeitheropeningpropane/LPsup-
ply tank valve for propane/LP gas or opening main gas valve lo-
cated onor neargas meterfor naturalgas, or usingcompressed air.
4. Check all joints of gas supply piping system.Apply noncorrosive
leak detection fluid to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve to gas supply.
Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 24).
2. Pressurizesupplypipingsystembyeitheropeningpropane/LPsup-
ply tank valve for propane/LP gas or opening main gas valve lo-
cated onor neargas meterfor naturalgas, or usingcompressed air.
3. Check all joints from gas meter for natural gas (see Figure 25)
or propane/LPsupply tank to equipment shutoff valve for pro-
pane/LPgas (see Figure 26, page 15).Apply noncorrosive leak
detection fluid to gas joints. Bubbles forming show a leak.
4. Correct all leaks at once.
INSTALLATION
Continued
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
Figure23).The flexible gas supply line connectionto
the equipment shutoff valve should be accessible.
2. Apply pipe joint sealant lightly to male threads of gas connec-
tor attached to flexible gas line (see Figure 23).
3. Check all gas connections for leaks. See Checking Gas
Connections.
4. Feed flexible gas line into fireplace base area. Make sure the
entire flexible gas line is in fireplace mantel base area.
Figure 23 - Attaching Flexible Gas Lines Together
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
To Fireplace
Gas Regulator Equipment Shutoff Valve
Provided by Installer
To Gas Meter
➞
➞
Gas Meter
Figure 25 - Checking Gas Joints for Natural Gas Unit (Shown
With Optional Mantel)
Equipment
Shutoff Valve
INSTALLATION
Connecting Fireplace to Gas Supply (Cont.)
Checking Gas Connections

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15
Figure 26 - Checking Gas Joints for Propane/LP Units (Shown
with Optional Mantel)
Equipment Shutoff Valve
Propane/LP
Supply Tank
INSTALLATION
Continued
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 24, page 14).
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 Figure 23, page 14). Apply 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 16 and 17).
Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to Appliance, page 16).
8. Replace front panel.
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.
INSTALLING LOGS
It is very important to install the logs exactly as instructed. Do not
modify logs. Only use logs supplied with heater.
Place one-piece log set on grate to fit as illustrated in Figure 27.
Make sure back section of log set is seated into “U”-shaped cutout
in center of chassis (see Figure 27).
IMPORTANT: Make sure log
does not cover any burner ports (see Figure 28).
CAUTION:Afterinstallationandperiodicallythere-
after,check to ensure thatnoflame comes incontact
with any log. With the heater set to HI, check to see if
flames contact any log. If so, reposition logs accord-
ing to the log installation instructions in this manual.
Flames contacting logs will create soot.
LO
PILOT
OFF
HI
One Piece Log Set
"U"-shaped
Cutout in
Chassis
Chassis
Figure 27 - Installing One-Piece Log Set
Figure 28 - Installing One-Piece Log set (Top View)
One Piece Log Set
Burner Ports
Burner
INSTALLATION
Checking Gas Connections (Cont.)
Installing Logs

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NOTICE:Duringinitialoperationofnewheater,burning
logs will give off a paper-burning smell. Orange flame
will also be present. Open damper or window to vent
smell. This will only last a few hours.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information above.
2. Make sure equipment shutoff valve is fully open.
3. Turn control knob clockwise
Clockwise
to the OFF position.
4. Wait five (5) minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP! Fol-
low “B” in the safety information above. If you don’t smell
gas, go to the next step.
5. Turn control knob counterclockwise
C-clockwise
to the PI-
LOT position. Press in control knob for five (5) seconds
(see Figure 29).
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
Figure 30 - Pilot (Propane/LP Shown)
Thermocouple
Ignitor
Electrode Pilot Burner
TO TURN OFF GAS
TO APPLIANCE
Control Knob
Ignitor
Button
Figure 29 - Control Knob and Ignitor Button
WARNING:Ifyoudonotfollowtheseinstructions
exactly, a fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
WHAT TO DO 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 de-
partment.
C. Useonlyyourhand topush in or turnthe gas controlknob.
Never use tools. If the knob will not push in or turn by
hand, don’t try to repair it, call a qualified service techni-
cian or gas supplier. Force or attempted repair may result
in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and
any gas control which has been under water.
FOR YOUR SAFETY
READ BEFORE LIGHTING
OPERATING FIREPLACE
Note: You may be running this heater for the first time
after hooking up to gas supply. If so, the control knob may
need to be pressed in for 30 seconds or more. This will al-
low air to bleed from the gas system.
• If control knob does not pop out when released, contact a
qualified service person or gas supplier for repairs.
6. With control knob pressed in, press and release ignitor but-
ton. This will light pilot. The pilot is attached to the front
burner.Ifneeded,keeppressingignitorbuttonuntilpilotlights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
lightpilot withmatch.Tolight pilotwith match,see Manual
Lighting Procedure, page 17.
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 heater
hasasafetyinterlocksystem.Waitone(1)minuteforsystemto
reset before lighting pilot again.
8. Turncontrolknobcounterclockwise
C-clockwise
todesiredheat-
ing level. The burners should light. Set control knob to any
heat level between HI and LO.
Shutting Off Heater
Turn control knob clockwise
Clockwise
to the OFF position.
Shutting Off Burners Only (pilot stays lit)
Turn control knob clockwise
Clockwise
to the PILOT position.
OPERATING FIREPLACE
For Your Safety Read Before Lighting
Lighting Instructions
To Turn Off Gas To Appliance

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17
OPERATING FIREPLACE
Continued
The thermostat control knob can be set to any comfort level
between HI and LO. The thermostat will gradually modulate the
heatoutputandflameheightfromhighertolowersettings,orpilot,
inordertomaintainthecomfortlevelyouselect.Theidealcomfort
settingwillvarybyhouseholddependingupontheamountofspace
to be heated, the output of the central heating system, etc.
Note: Selecting the HI settingwith the controlknob willcause the
burnertoremainfullyon,withoutmodulatingdowninmostcases.
THERMOSTAT CONTROL
OPERATION
1. Followsteps1through5underLightingInstructions,page16.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
step 8 under Lighting Instructions, page 16.
MANUAL LIGHTING
PROCEDURE
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 31 shows a correct pilot flame pattern. Figure 32 shows an
incorrectpilotflamepattern.Theincorrectpilotflameisnotproperly
heating the thermocouple. This will cause the thermocouple to cool.
When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 32
• turn heater off (see To Turn Off Gas to Appliance, page 16)
• see Troubleshooting, pages 19 through 21
Note: The pilot flame on natural gas units will have a slight curve,
but flame should be blue and have no orange color.
Thermocouple
Pilot Burner
Figure31-CorrectPilotFlame
Pattern (Propane/LP Shown) Figure32-IncorrectPilotFlame Pattern (Propane/LP Shown)
Thermocouple
Pilot Burner
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes in the fitting at the
burnerentrance.Theseholesmaybecomeblocked with dust or lint.
Periodically inspect these holes for any blockage and clean if
needed. Blocked air holes will create soot.
MAIN BURNER
Periodicallyinspectallburnerflameholeswiththeheaterrunning.All
slottedburnerflame holes shouldbeopenwith yellow flamepresent.
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,withnoflamepresent. If so, turn off heater and let cool. Remove
blockage. Blocked burner flame holes will create soot.
CLEANING AND
MAINTENANCE
WARNING: Turn off heater and let cool before
cleaning.
CAUTION: You must keep control areas, burners,
and circulating air passageways of heater clean. In-
spect these areas of heater before each use. Have
heater inspected yearly by a qualified service person.
Heatermayneedmorefrequentcleaningduetoexces-
sivelintfromcarpeting,beddingmaterial,pethair,etc.
CLEANING BURNER INJECTOR HOLDER
AND PILOT AIR INLET HOLE
The primary air inlet holes allow the proper amount of air to mix with
thegas. 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
heatingseason. Blockedairholeswillcreatesoot.We recommendthat
youcleantheuniteverythreemonthsduringoperationandhaveheater
inspected yearly by a qualified service person.
We also recommend that you keep the burner tube and pilot assembly
cleanandfreeofdustanddirt.Tocleanthesepartswerecommendusing
compressed air no greater than 30 PSI. Your local computer store,
hardwarestore,orhomecentermaycarrycompressedairinacan.You
canuse a vacuumcleaner inthe blow position.If using compressed air
in a can, please follow the directions on the can. If you don't follow
directions on the can, you could damage the pilot assembly.
OPERATING FIREPLACE
Thermostat Control Operation
Manual Lighting Procedure
INSPECTING BURNERS
CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder and Pilot Air Inlet Hole
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in soot-
ing and property damage.

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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.
Figure 33 - Injector Holder On Outlet Burner Tube
Burner
Tube Injector Holder
Primary Air
Inlet Holes
Figure 34 - Pilot Inlet Air Hole
Burner
Tube
Pilot Assembly Pilot Air
Inlet Hole
Ports/Slots
SPECIFICATIONS
CF26PT CF26NT
Btu (Variable) 19,000/26,000 19,000/26,000
Type Gas Propane/LP Only Natural Only
Ignition Piezo Piezo
Manifold Pressure 8" W.C. 3.5" W.C.
Inlet Gas Pressure (in. of water) *
Maximum 14" 10.5"
Minimum 11" 5"
Dimensions, Inches (H x W x D)
Fireplace 25 7/8x 27 x 13 3/425 7/8x 27 x 13 3/4
Carton 28 x 26 13/16 x 16 1/228 x 26 13/16 x 16 1/2
Weight, pounds
Fireplace 44 1/2lbs. 44 1/2lbs.
Shipping 55 lbs. 55 lbs.
* For purposes of input adjustment
TECHNICAL SERVICE
You may have further questions about installation, operation, or
troubleshooting. If so, contact DESA Heating Products’ Techni-
cal Service Department at 1-866-672-6040. When calling, please
have your model and serial numbers of your heater ready.
You can also visit DESA Heating Products’ technical services
web site at www.desatech.com.
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low (propane/LP only)
You may feel your gas pressure is too low. If so, contact your local
natural or propane/LP gas supplier.
SERVICE HINTS
1. Shut off the unit, including the pilot.Allow the unit to cool for
at least thirty minutes.
2. Inspect burners, pilot, and primary air inlet holes on injector
holder for dust and dirt (see Figure 33).
3. Blow air through the ports/slots and holes in the burners.
4. Checktheinjectorholderlocatedattheendoftheburnertubeagain.
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
dustanddirtinthepilotassembly.Thereisasmallpilotairinletholeabout
twoinchesfromwherethepilotflamecomesoutofthepilotassembly(see
Figure 34). With the unit off, lightly blow air through the air inlet hole.
Youmayblowthroughadrinkingstrawifcompressedairisnotavailable.
CLEANING AND
MAINTENANCE
continued
CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder and Pilot Air Inlet Hole (Cont.)
Cabinet
SPECIFICATIONS
SERVICE HINTS
TECHNICAL SERVICE

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19
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.
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 knob not pressed in 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 piezo ignitor to base
panel of log set. Nut is located behind
base panel
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
7. Replace pilot assembly
1. Turn on gas supply or open equipment
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is re-
moved
5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, pages 17 and 18) or re-
place ODS/pilot assembly
7. Replace gas control
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, pages 17 and 18) or re-
place ODS/pilot assembly
5. Hand tighten until snug, then tighten 1/4
turn more
6. Replace pilot assembly
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
Note: For additional help, visit DESA
HeatingProducts’ technicalserviceweb
site at www.desatech.com.
Note: Alltroubleshootingitemsarelistedin
order of operation.
TROUBLESHOOTING

111410-01C
For more information, visit www.desatech.com
For more information, visit www.desatech.com
20
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
Burner does not light after ODS/pilot is lit
Delayed ignition burner
Burner backfiring during combustion
Slightsmokeor odor duringinitialoperation
Moisture/condensationnoticedonwindows
Heater produces a whistling noise when
burner is lit
Whitepowderresidueformingwithinburner
box or on adjacent walls or furniture
REMEDY
1. Clean burner (see Cleaning and Main-
tenance, pages 17 and 18) or replace
burner orifice
2. Contact local natural or propane/LP gas
company
1. Contact local natural or propane/LP gas
company
2. Clean burner (see Cleaning and Main-
tenance, pages 17 and 18) or replace
burner orifice
1. Clean burner (see Cleaning and Main-
tenance, pages 17 and 18) or replace
burner orifice
2. Replace damaged burner
3. Replace gas control
1. Check burner for dirt and debris. If
found, clean burner (see Cleaning and
Maintenance, pages 17 and 18)
2. Replace gas control
3. Problem will stop after a few hours of
operation
1. Refer to Air for Combustion and Venti-
lation requirements (page 4)
1. Turn control knob to LO position and
let warm up for a minute
2. Operate burner until air is removed from
line. Have gas line checked by local
natural or propane/LP gas company
3. Observe minimum installation clear-
ances (see pages 7 through 9)
4. Clean burner (see Cleaning and Main-
tenance, pages 17 and 18) or replace
burner orifice
1. Turn heater off when using furniture
polish, wax, carpet cleaners, or similar
products
POSSIBLE CAUSE
1. Burner orifice clogged
2. Inlet gas pressure is too low
1. Manifold pressure is too low
2. Burner orifice clogged
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing processes
and logs curing
1. Not enough combustion/ventilation air
1. Turning control knob to HI position
when burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice
1. When heated, vapors from furniture pol-
ish, wax, carpet cleaners, etc. may turn
into white powder residue
TROUBLESHOOTING