Desa Comfort Glow SYCAMORE SPLIT SMS18 Quick start guide

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WARNING: If the information in this manual is not fol-
lowed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
VENTED DECORATIVE NATURAL GAS LOGS
OWNER’S OPERATION AND INSTALLATION MANUAL
RGA 2-72
APPROVED
TESTED AND
LISTED BY
SYCAMORE SPLIT
MODELS SMS18 AND SMS24

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2
WARNING: Improper installation, adjustment, altera-
tion, service or maintenance can cause injury or prop-
erty damage. Refer to this manual for correct installation
and operational procedures. For assistance or addi-
tional information consult a qualified installer, service
agency or the gas supplier.
WARNING: This appliance is for installation only in
a solid-fuel burning masonry or UL127 factory-built
fireplace, constructed of noncombustible material and
connected to a working flue. (See page 5 for minimum
flue opening.
WARNING: This is a decorative gas appliance. It uses
air (oxygen) from the room in which it is installed. Provi-
sions for adequate combustion and ventilation air must
be provided. Refer to the National Fuel Gas Codes, ANSI
Z233.1/NFPA 54, Section 5.3, Air for Combustion and
Ventilation.
This appliance may be installed in an aftermarket,* per-
manently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indi-
cated on the rating plate.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
State of Massachusetts: The installation must be made
by a licensed plumber or gas fitter in the Commonwealth
of Massachusetts.
TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identification ........................................... 4
Local Codes ........................................................ 4
Unpacking ........................................................... 4
Installation ........................................................... 5
Operating Appliance ............................................ 9
Cleaning and Maintenance ................................ 10
Service Hints ..................................................... 10
Technical Service .............................................. 10
Replacement Parts ............................................ 10
Troubleshooting ..................................................11
Accessories ....................................................... 13
Illustrated Parts Breakdown and Parts List ....... 14
Warranty Information ...........................Back Cover

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117536-01B 3
SAFETY INFORMATION
WARNING: This product con-
tains and/or generates chemicals
known to the State of California
to cause cancer or birth defects
or other reproductive harm.
WARNING: Keep flue open
when operating unit.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate
or service this log set. Improper use
of this log set can cause serious
injury or death from burns, fire,
explosion, electrical shock and
carbon monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble the flu, with head-
aches, dizziness or nausea. If you have these signs,
the log set may not be working properly. Get fresh
air at once! Have log set serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the influence
of alcohol and those at high altitudes.
Natural Gas: Natural gas is odorless. An odor-
making agent is added to the gas. The odor helps
you detect a gas leak. However, the odor added to
the gas can fade. Gas may be present even though
no odor exists.
Make certain you read and understand all warnings.
Keep this manual for reference. It is your guide to
safe and proper operation of this log set.
WARNING: Any change to
this log set or its controls can
be dangerous.
WARNING: Do not use a blow-
er insert, heat exchanger insert or
other accessory not approved for
use with this appliance.
WARNING: This appliance is
equipped for natural gas. An op-
tional propane/LP conversion kit
model GA9200 must be installed
for use with propane/LP gas.
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns.
WARNING: Installed decora-
tive glass door enclosures must
be fully opened when operating
this gas appliance.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the appliance.
Log set becomes very hot when
in use. Keep children and adults
away from hot surface to avoid
burns or clothing ignition. Appli-
ance will remain hot for a time after
shutdown. Allow surface to cool
before touching.
Carefully supervise young chil-
dren when they are in the room
with appliance.
You must operate this appliance
with a fireplace screen in place.
Make sure fireplace screen is
closed before running appliance.
Keep the appliance area clear
and free from combustible ma-
terials, gasoline and other flam-
mable vapors and liquids.

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4
1. 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
neighborʼs phone. Follow the gas supplierʼs
instructions
• if you cannot reach your gas supplier, call
the fire department
2. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing, or other
flammable objects are less than 42 inches
from the front, top, or sides of the log set
• in high traffic areas
• in windy or drafty areas
3. Before installing in a solid fuel burning fireplace,
the chimney flue and firebox must be cleaned of
soot, creosote, ashes and loose paint by a qualified
chimney cleaner. Creosote will ignite if highly
heated. Inspect chimney flue for damage. If dam-
aged, repair flue before operating appliance.
4. This log set is designed to be smokeless. If
logs ever appear to smoke, turn off appliance
and call a qualified service person. Note:
During initial operation, slight smoking could
occur due to log curing and the burning of
manufacturing residues. You may wish to add
more ventilation by opening a window.
5. To reduce the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 10.
6. The installation and provisions for combustion and
ventilation air must conform with the National
Fuel Gas Code, ANSI Z233.1/NFPA 54, Section
5.3, Air for Combustion and Ventilation.
7. Do not run log set
• where flammable liquids or vapors are used
or stored
• under dusty conditions
8. Do not burn solid fuel in the fireplace after
installing the log set. Do not use this log set to
cook food or burn paper or other objects.
9. Do not use appliance if any part has been
exposed to or under water. Immediately call
a qualified service technician to inspect the
room appliance and to replace any part of the
control system (if using GA9200) and any gas
control which has been under water.
SAFETY INFORMATION
Continued
PRODUCT
IDENTIFICATION
Figure 1 - Product Identification
(Ramp Pan Burner)
Hearth Kit Model ____________________
Serial Number ______________________
Log Set Model ______________________
Grate
Burner Pan Burner Inlet
(Under Pan)
LOCAL CODES
Install and use log set with care. Follow all local
codes. In the absence of local codes, use the lat-
est 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
UNPACKING
CAUTION: Do not remove the
data plates from the burner pan.
The data plates contain important
safety and warranty information.
1. Remove logs, hearth kit, pan materials, and
hardware from carton.
2. Remove all protective packaging applied to
logs and base for shipment.
3. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought the product.
10. To help prevent breakage, new logs must be
broken-in (see Curing Logs page 9).
11. Turn log set off and let cool before servicing,
installing, or repairing. Only a qualified service
person should install, service, or repair log set.
12. Provide adequate clearances around air
openings.

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117536-01B 5
INSTALLATION
WARNING: Before installing
in a solid fuel burning fireplace,
the chimney flue and firebox
must be cleaned of soot, creo-
sote, ashes and loose paint by a
qualified chimney cleaner. Creo-
sote will ignite if highly heated.
A dirty chimney flue may create
and distribute soot within the
house. Inspect chimney flue for
damage. If damaged, repair flue
before operating appliance.
NOTICE: Installation, service, and
repair of this appliance must be
performed by a qualified installer,
service agency, company or
gas supplier experienced with
this type of gas appliance. Only
factory authorized components
listed in these instructions may
be used in accordance with the
manufacturer’s instructions and
all codes and requirements of
the authority having jurisdiction.
Any modifications to this kit, or
use of unauthorized components
or accessory items will void the
manufacturer’s warranty, and may
result in a hazardous condition.
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed only
in a solid-fuel burning fireplace with a working flue
and constructed of noncombustible material.
The charts in Figure 2 indicate technical information
regarding the installation of your gas log set. Please
make sure that all of the specifications shown are
applicable before installation is attempted.
The fireplace must include a working flue and
venting system with the minimum openings shown
in the Figure 2.
CHECK GAS TYPE
Use only natural gas. If your gas supply is not
natural gas, you must install ON/OFF Safety
Valve/Pilot Kit (see Accessories, page 13). Call
dealer where you bought log set.
If the fireplace does not have a gas supply shutoff
valve, one must be installed.
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be draft-
ing properly. To check the vent for proper drafting:
Light a tightly rolled newspaper on one end and
place it at the inside front edge of the fireplace.
Observe the smoke and be sure the vent is properly
drawing it up the chimney. If the smoke spills out
into the room, extinguish the flame and remove any
obstruction until proper venting is achieved.
The chimney flue must remain open a minimum
of 3" at all times during the operation of this
log set.
BURNER ORIFICE
LOG
SIZE
NATURAL
IN. NUM.
18" .120 31
24" .140 28
MINIMUM FIREBOX SIZES
MODEL FRONT
WIDTH
BACK
WIDTH*
DEPTH HEIGHT
SMS18 28" 18" 16" 18"
SMS24 32" 24" 16" 18"
Model
Burner
Descrip-
tion
Btu Input
Natural
Gas
Minimum
Vent
Opening
SMS18 18" Ramp 60,000 8" dia.
SMS24 24" Ramp 80,000 8" dia.
*At depth indicated
FUEL INLET PRESSURE
SPECIFICATIONS (W.C.)
Min. Max.
NG 5.5" 10.5"
LP 11" 13"
Figure 2 - Technical Information Charts

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6
INSTALLING DAMPER CLAMP
Secure the damper stop clamp provided to the leading
edge of the damper as shown in Figure 3. If for any rea-
son this clamp doesn't work on your fireplace, another
suitable clamp or permanent stop must be installed, or
the damper blade must be cut or removed.
Damper
Clamp
Damper
Clamp
Damper
Manufactured
Fireplace
Masonry Fireplace
Figure 3 - Attaching Damper Clamp
INSTALLATION
Continued
Damper
CONNECTING TO GAS SUPPLY
WARNING: A qualified service
person must connect log set to gas
supply. Follow all local codes.
Installation Items Needed
Before installing log set, make sure you have the
items listed below.
• piping (check local codes)
• sealant (resistant to Propane/LP gas)
• equipment shutoff valve
• test gauge connection
• adjustable (crescent) wrench or pliers
• sediment trap
• tee joint
• pipe wrench
CAUTION: Use only new, black
iron or steel pipe. Internally-tinned
copper tubing may be used in
certain areas. Check your local
codes. Use pipe of 1/2" diameter
or greater to allow proper gas vol-
ume to log set. If pipe is too small,
undue loss of volume will occur.
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 log set (see Figure 4).
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.
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 a clogged burner injector.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
We recommend that you install a sediment trap in
supply line as shown in Figure 4. Locate sediment
trap where it is within reach for cleaning. Install in
piping system between fuel supply and appliance.
Locate sediment trap where trapped matter is not
likely to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into log
set controls. If sediment trap is not installed or is
installed wrong, log set may not run properly.
Figure 4 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 13.
** Minimum inlet pressure for purpose of input
adjustment.
3" Minimum
Sediment Trap
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible Gas Hose
(if allowed by local codes)
Tee
Joint
Pipe
Nipple
Cap

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117536-01B 7
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an open
flame to check for a leak. Apply a
noncorrosive leak detection fluid
to all joints. Bubbles forming show
a leak. Correct all leaks at once.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect log set and its individual equipment
shutoff valve from gas supply piping system.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either us-
ing compressed air or opening main gas valve
located on or near gas meter.
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 log set and equipment shutoff
valve to gas supply. Check reconnected fit-
tings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 5).
2. Pressurize supply piping system by either us-
ing compressed air or opening main gas valve
located on or near gas meter.
INSTALLATION
Continued
Figure 5 - Checking Gas Joints
Gas Meter
Equipment Shutoff Valve
Burner Orifice
(Factory Installed)
Burner Inlet Venturi
(Attached to Pan
Bottom)
Gas Connector
Tube
Figure 6 - Connecting Gas to Appliance
Adapter
Fitting
Burner Inlet Fitting
(Factory Installed)
3. Check all joints from gas meter to equipment
shutoff valve (see Figure 5). Apply noncorro-
sive leak detection fluid to gas joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
HEARTH KIT ASSEMBLY AND
INSTALLATION
Kit Assembly - Ramp Pan Burner
1. Determine which side the gas line feeds into
the fireplace. This log set is factory set up for
right side (facing) gas feed. If your gas line is
on the right side, go to the Installation and Gas
Connection section below. If your gas line is
on the left side of the fireplace, proceed with
steps 2 through 4 below. Note: Pilot kit can
only be installed on the right (facing) side.
2. Remove the nuts securing the gas inlet venturi
to the bottom of the burner (see Figure 6).
3. Remove the venturi from the pan taking care
not to damage the gasket between the venturi
and the pan.
4. Reverse the direction of the venturi and re-attach
to the bottom of the pan using factory nuts.
Installation and Gas Connection
1. Place the ramp burner assembly in the center
of the fireplace floor. Make sure the front of
pan faces forward.
2. Thread the gas supply fitting to the fireplace
gas supply pipe. Use thread sealant.
3. Install the gas connector tube to the gas supply
fitting. Carefully shape tube to attach to adapter
fitting. Be careful not to cause kinks in tube.
4. Attach opposite end of gas connector tube to
the gas inlet fitting on the end of the venturi.

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8
INSTALLATION
Continued
OPTIONAL GA9200 SERIES ON/OFF
SAFETY VALVE/PILOT KIT
For additional convenience and safety an optional
ON/OFF safety valve/pilot kit is available. See Ac-
cessories, page 13.
Parts are available in this kit for propane/LP conver-
sion. See kit instruction sheet for detailed installation
instructions.
WARNING: You must use an
ON/OFF safety valve/pilot kit for
propane/LP conversion.
TESTING BURNER FOR LEAKS
1. Generously apply noncorrosive leak detec-
tion fluid to all connections.
WARNING: Never check for
gas leaks with open flame.
2. Light the burner with the shutoff valve no
more than half open and holding a match
slightly in front of the pan (see Lighting
Instructions, page 9).
3. Inspect all connections for bubbles, raw gas
odor, or flame from any area other than the
burner (leaks). If leaks are detected, shut off
the gas valve immediately. Tighten, or reas-
semble the loose connection(s) using pipe joint
compound until burner system is leak free.
4. When the burner is tested and leak free, observe
the individual tongues of flame on the burner.
Make sure that all ports are clear and produc-
ing flame evenly across the burner. If any ports
appear blocked, clear them by removing the
burner manifold and reaming the ports with a
modified paper clip or other suitable tool.
5. When finished testing, turn the gas shutoff
valve OFF to extinguish all flames.
ADDING PAN MATERIAL
Open the bag of glowing embers and spread it
evenly over the burner ramp.
INSTALLING THE GRATE AND LOGS
1. Slide grate steps onto the ends of the grate as
shown in Figure 7.
2. Place the grate over the burner pan where the
two outer horizontal supports on the grate fit
into the two pan positioning tabs on the outer
edges of the pan.
3. Place two front logs onto grate (see Figure 8).
4. Place back log on grate steps (see Figure 8).
5. Figure 8 and Figure 9 on page 9 show a recom-
mended log arrangement, however you may
arrange the logs as you wish. Leave as much
open space as possible to minimize flame im-
pingement and sooting. Note: Logs may chip if
they are handled roughly or if hit together while
being placed.
5. Place ember chunks onto bottom portion of ramp
burner using Figure 9, page 9, as an example.
Figure 8 - Installing Logs
Figure 7 - Attaching Grate Steps
Grate Steps

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117536-01B 9
INSTALLATION
Continued
Figure 9 - Placement of Top Logs
Ember
Chunks
OPERATING APPLIANCE
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: Keep flue open
when operating unit.
WARNING: If you do not fol-
low these instructions exactly,
a fire or explosion may result
causing property damage, per-
sonal injury or loss of life.
BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next to
the floor because some gas is heavier than air
and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighborʼs phone. Follow the gas supplierʼs
instructions.
• If you cannot reach your gas supplier, call the
fire department.
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information on
column 1.
2. Turn the gas shutoff valve to OFF.
3. Wait five (5) minutes to clear out any gas. If
you then smell gas STOP! Follow the safety
information column 1. If you don't smell
gas, go on to the next step.
4. Light a match and lay it on top of the pan
material about 2" from the end of the sup-
ply side of the pan
5. Slowly turn the gas shutoff valve ON until
the burner ignites. If the burner doesnʼt
ignite within 10 seconds with the match
burning, turn the shutoff valve OFF and
repeat steps 1 through 4 again.
GAS SHUTOFF
VALVE OPERATION
Flame Adjustment
Adjust the flame ON/OFF by turning the gas
shutoff valve counterclockwise to open
or clockwise to close, as necessary.
Shutting Off Appliance
Turn gas shutoff valve clockwise to the
OFF position.
CURING
LOGS
During the 2-3 hour appliance break-in period,
you may detect an odor from the appliance
as the various paints and compounds used in
the manufacturing of this log set cure. This is
a normal and temporary situation that is not
cause for alarm. However, you may want to
provide extra ventilation to the room during
this time.
To ensure proper curing of the logs:
• Ignite a 2" flame and maintain it for 1
hour.
• Burn the logs in consecutive 1 hour periods
raising the flame an additional 2" to full
flame height for a total of three hours.

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10
CLEANING AND
MAINTENANCE
• Keep the area around the log set clean and clear
of debris.
• Occasionally, you may use a soft bristle brush
to clean logs.
• Once every year a qualified agency or certified
chimney sweep should examine and clean the
venting system of the fireplace.
SERVICE HINTS
When Gas Pressure is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• appliance will not produce specified heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, con-
tact your local propane/LP or natural gas supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation, or troubleshooting. If so, contact DESAʼs
Technical Service Department at 1-866-672-6040.
When calling please have your model and serial
numbers of your appliance ready.
You can also visit DESAʼs technical services web
site at www.desatech.com.
REPLACEMENT PARTS
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If they
canʼt supply original replacement part(s), call DESAʼs
Technical Service Department at 1-866-672-6040.
When calling DESA, have ready
• your name and address
• model and serial numbers of your log set
• how log set was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the
factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If they
canʼt supply original replacement part(s), call
DESA at 1-866-672-6040 for referral information.
When calling DESA, have ready
• model number of your log set
• the replacement part number

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117536-01B 11
TROUBLESHOOTING
WARNING: Turn off log set and let cool before servicing. Only a
qualified service person should service and repair log set.
Note: All troubleshooting items are listed in order of operation.
POSSIBLE CAUSE
1. Poor fuel quality
2. Fireplace venting system not
drafting properly
3. Excessive flame impingement
or blockage
4. Improper fuel/air mixture
5. Excessive gas supply/pressure
1. Passage of air/gas across ir-
regular surfaces
1. Incorrect gas supply or
pressure
2. Blocked burner orifice or
burner manifold ports
3. Improper burner orifice size
REMEDY
1. Contact local natural gas
company
2. Adjust damper wide open
and/or have fireplace and vent-
ing professionally cleaned and
checked
3. Separate the logs to allow more
flame passage
4. Remove any foreign items from
the flame pattern and/or check
for proper orifice sizing
5. Preheat flue in very cold
weather
1. Relieve any tight bends or
kinks in gas supply line
1. Check for proper gas supply
pressure
2. Free burner orifice and mani-
fold ports of any burrs, paint,
or other blockage
3. Verify proper burner orifice
sizing (see Figure 2, page 5)
OBSERVED PROBLEM
Log set is smoking/sooting
excessively (Note: It is natural
and unavoidable for vented gas
log sets to produce moderate
levels of carbon (soot) where
flames contact the logs.)
Burner is excessively noisy
(Note: The movement and com-
bustion of gas will create low,
unavoidable levels of noise.)
Burner flame is too low or too
high

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12
POSSIBLE CAUSE
1. Metal expanding while heating
or contracting while cooling
1. Log set burning vapors from
paint, hair spray, glues, clean-
ers, chemicals, new carpet,
etc. (See IMPORTANT state-
ment above)
2. Gas leak. See Warning
statement at top of page
1. Gas leak. See Warning
statement at top of page
2. Control valve defective
1. Gas leak. See Warning
statement at top of page
REMEDY
1. This is common with most log
sets. If noise is excessive, con-
tact qualified service person
1. Open flue to maximum. Stop
using odor causing products
while log set is running
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 7)
1. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 7)
2. Replace control valve
1. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 7)
OBSERVED PROBLEM
Log set produces a clicking/tick-
ing noise just after burner is lit
or shut off
Log set produces unwanted
odors
Gas odor even when control knob
is in OFF position
Gas odor during combustion
WARNING: 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. Fol-
low the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT: Operating log set where impurities in air exist may create odors. Cleaning supplies,
paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These
fumes may mix with combustion air and create odors. These odors will disappear over time.
TROUBLESHOOTING
Continued

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117536-01B 13
ACCESSORIES
Purchase these log set accessories from your local
dealer. If they can not supply these accessories,
call DESA at 1-866-672-6040 for referral infor-
mation. You can also write to the address listed
on the back page of this manual.
EQUIPMENT SHUTOFF VALVE
GA5010
For all models. Equipment shutoff valve with
1/8" NPT tap. Fits 1/2" NPT pipe.
INDIVIDUAL ROUND LOG - GA9450A
(Not Shown)
For decorative purposes only. Not to be used as ad-
ditional logs on unit.
INDIVIDUAL SPLIT LOG - GA9550A
(Not Shown)
For decorative purposes only. Not to be used as ad-
ditional logs on unit.
PINE CONES - GA9650A
(Not Shown)
For all models. Use for additional decoration only.
(3 pine cones per box).
ASH BED MATERIAL
(VERMICULITE) - GA9750A
(Not Shown)
For all models. Use for firebox decoration only.
GLOWING EMBERS - GA9950A
(Not Shown)
For all models. Use for firebox decoration only.
SILICA SAND - GA9850A
(Not Shown)
For all models. Use for firebox decoration only.
LAVA ROCK - GA6067A
(Not Shown)
For all models. Use for firebox decoration only.
DECORATIVE ASH BED CONTROL
COVER CDABKA (Not Shown)
An attractive way to cover control knob and
piezo ignitor.
18" ORNAMENTAL GRATE
ENHANCER - GA9350A
(Not Shown)
For 18" models only. Additional decoration for
front grate.
24" ORNAMENTAL GRATE
ENHANCER - GA9360A
(Not Shown)
For 24" models only. Additional decoration for
front grate.
FIRE CRACKLE - CF6-A
(Not Shown)
For all models. Creates the sound of a real burn-
ing fire.
MANUAL CONTROL ON/OFF SAFETY
VALVE/PILOT KIT - GA9200
(Not Shown)
For all models. Contains components for pro-
pane/LP conversion.

www.desatech.com 117536-01B
14
ILLUSTRATED PARTS BREAKDOWN
MODELS SMS18 AND SMS24
1
8
9
10
23
13
11
17
16
15
22
21
20
3
2
4
5
6
7
12
14
18
19

www.desatech.com
117536-01B 15
PARTS LIST
This list contains replaceable parts used in your log set. When ordering parts, follow the instructions
listed under Replacement Parts on page 10 of this manual.
KEY
NO.
PART NUMBER
DESCRIPTION QTY.
SMS18 SMS24
1 901056-01 901056-01 3/8 FLR x 1/2 FPT Adapter 1
2 901059-01 901059-01 3/8 FLR x 3/8 FPT Adapter 1
3 101628-01 101628-01 Gas Line - 10" Flex 1
4 104506-27 104506-28 Natural Gas Injector 1
5 14538 14538 Venturi 1
6 14527 14527 Venturi Gasket 1
7 115482-01 115482-02 Burner Pan 1
8 901242-01 901242-01 Damper Clamp - Std. Assy 1
9 11209 11209 Nut #10/24 2
10 117244-01 117244-02 Log Grate 1
11 117250-01 117251-01 Front Bottom Left Log 1
12 117250-02 117251-02 Front Bottom Right Log 1
13 901111-01 901111-02 Back Log 1
14 901101-01 901101-01 Middle Right Log 1
15 — 901094-01 Middle Center Log 1
16 111502-07 111502-07 Middle Left Log 1
17 901778-01 901778-01 Top Left Log 1
18 901120-01 901120-01 Top Right Log 1
19 901118-01 901118-01 Top Rear Log 1
20 112363-03 112363-03 Ember Chunk 2
21 112363-05 111961-05 Ember Chunk 1
22 112363-06 112363-06 Ember Chunk 1
23 117248-01 117248-01 Steel Grate Step 2
PARTS AVAILABLE — NOT SHOWN
901156-01 901156-01 .125# Bag Embers 2
901157-02 901157-02 Lava Cinders 1

2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
NOT A UPC 117536-01
Rev. B
07/05
117536 01
WARRANTY INFORMATION
KEEP THIS WARRANTY
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our
standard written warranty. We make no other warranty, expressed or implied.
LIMITED LIFETIME WARRANTY - VENTED GAS LOGS
DESA warrants this product to be free from defects in materials and components of the burner system for two (2)
years and a lifetime on logs from the date of first purchase, provided that the product has been properly installed,
operated and maintained in accordance with all applicable instructions. To make a claim under this warranty the
Bill of Sale or cancelled check must be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to
restore this log set to proper operating condition and an allowance for labor when provided by a DESA Authorized
Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA who
will provide original factory replacement parts. Failure to use original factory replacement parts voids this war-
ranty. The log set MUST be installed by a qualified installer in accordance with all local codes and instructions
furnished with the unit.
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts
that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by
improper installation. Travel, diagnostic cost, labor, transportation and any and all such other costs related to
repairing a defective log set will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE
OF THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED
WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO (2)
YEARS ON BURNER SYSTEM AND A LIFETIME ON LOGS FROM THE DATE OF FIRST PURCHASE;
AND DESAʼS LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND
DESA SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of
incidental or consequential damages, so the above limitation on implied warranties, or exclusion or limitation on
damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write: