Desa Design Dynamics VTD-18N-BTB Quick start guide

Save this manual for future reference.
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury, or loss of life.
— Do not store or use gasoline or other
flammablevaporsandliquidsinthevicinity
of this or any other appliance.
—WHATTO DO IFYOU 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 sup-
plier’s instructions.
• Ifyoucannotreachyourgassupplier,call
the fire department.
— Installation and service must be performed
by a qualified installer, service agency, or
the gas supplier.
WARNING: Improper installation, ad-
justment, alteration, service, or main-
tenance can cause injury or property
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.
This appliance may be installed in an aftermarket,* manufactured (mobile) home, where not
prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate.This appliance
is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Warning:This product must be installed by a Licensed Plumber or Gas Fitter when installed
withinThe Commonwealth of Massachusetts.
VTD-24N-PDG, VTD-24P-PDG,
VTD-18N-PDG, VTD-18P-PDG
VTD-24N-BTB, VTD-24P-BTB,
VTD-18N-BTB, VTD-18P-BTB
For more information, visit www.desatech.com
GAS LOG VENTED
DECORATIVE APPLIANCE
OWNER’S OPERATION AND
INSTALLATION MANUAL
ANSI Z21.60-2003
CSA 2.26-2003
APPROVED
WARNING: This appliance is for in-
stallation only in a solid-fuel burn-
ing masonry or UL127 factory-built
fireplace, constructed of noncom-
bustible material, and connected
to a working flue. (See page 7 for
minimum flue opening.)
WARNING:Thisisagas-firedappliance.Itusesair(oxygen)fromtheroominwhichitisinstalled.
Provisionsforadequatecombustionandventilationairmustbeprovided.RefertotheNational
Fuel Gas Codes, ANSI Z233.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.

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SAFETY INFORMATION
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoning resemble the flu, with headaches, dizziness, or nausea.
If you have these signs, the log set may not be working properly.
Getfreshairatonce!Havelogset serviced. Somepeoplearemore
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 & LP Gas : Natural & LP gas are odorless. An odor-mak-
ing 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 ICON G 001
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or ser-
vicethis log set. Improperuse ofthis log setcan cause
seriousinjuryordeathfromburns,fire,explosion,elec-
trical shock, and carbon monoxide poisoning.
DANGER: Carbon monoxide poisoning may lead
to death!
WARNING: Any change to this log set or its con-
trols can be dangerous.
WARNING: Keep flue open when operating unit.
TABLE OF CONTENTS
SAFETY INFORMATION
1. This appliance, as supplied, is only for use with the type of gas
indicated on the rating plate.
2. If you smell gas
• shut off gas supply
TABLE OF CONTENTS
SAFETY INFORMATION..............................................................2
LOCAL CODES............................................................................3
PRODUCT IDENTIFICATION.......................................................3
UNPACKING.................................................................................4
PRODUCT FEATURE ..................................................................4
INSTALLATION ............................................................................7
OPERATING APPLIANCE..........................................................11
INSPECTING BURNERS ..........................................................13
CLEANING AND MAINTENANCE .............................................13
TROUBLESHOOTING................................................................14
REPLACEMENT PARTS............................................................18
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST.........20
ACCESSORIES..........................................................................22
OWNER'S REGISTRATION FORM............................................23
WARRANTY INFORMATION ...................................... Back Cover
• 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
3. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing, or other flammable ob-
jects are less than 42 inches from the front, top, or sides of
the log set
• in high traffic areas
• in windy or drafty areas
4. 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 damaged,
repair flue before operating appliance.
5. You must operate this log set with fireplace doors or screens in
place and fullyclosed. Unlessprovidedby other means, screens
shall have openings for introduction of combustion air.
6. 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.
7. To reduce the creation of soot, follow the instructions in Clean-
ing and Maintenance, page 13.
8. Do not allow 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 increase sooting.
9. Do not use a blower insert, heat exchanger insert or other ac-
cessory not approved for use with this log set.
10. Theinstallationand provisions forcombustionand ventilationair
mustconformwith theNational Fuel Gas Codes, ANSI Z233.1/
NFPA 54, Section 5.3, Air for Combustion and Ventilation.
11. Do not run log set
• where flammable liquids or vapors are used or stored
• under dusty conditions
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.

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3
WARNING:Anychangetothislogsetoritscontrols
can be dangerous.
WARNING: Do not use a blower insert, heat ex-
changer insert, or other accessory not approved for
use with this appliance.
WARNING: Keep flue open when operating unit.
Appliance base assembly becomes very hot when
running appliance. Keep children and adults away
from hot surface to avoid burns or clothing ignition.
Appliance will remain hot for a time after shutdown.
Allow surface to cool before touching.
Carefully supervise young children when they are in
the room with appliance.When using the hand-held
remoteaccessory(Remote-ReadyModelsOnly),keep
selectorswitchintheOFFpositiontopreventchildren
from turning on burners with remote.
Youmustoperatethisappliancewithafireplacescreen
in place. Make sure fireplace screen is closed before
running appliance.
Keep the appliance area clear and free from com-
bustible materials, gasoline, and other flammable
vapors and liquids.
SAFETY INFORMATION
LOCAL CODES
PRODUCT IDENTIFICATION
12. 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.
13. Logset becomes very hotwhen inuse. Keep children and adults
away from hot surface to avoid burns or clothing ignition. Log
set will remain hot for a time after shutdown.Allow surface to
cool before touching.
14. Carefully supervise young children when they are in the room
with log set.
15. 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.
17. Turn log set off and let cool before servicing, installing, or re-
pairing. Only a qualified service person should install, service,
or repair log set.
18. Keep the appliance area clear and free from combustible mate-
rials, gasoline and other flammable vapors and liquids.
19. Provide adequate clearances around air openings.
PRODUCT IDENTIFICATION
Figure 1 - Product Identification
Log Set
Piezo
Ignitor Control Knobs
Chassis Assembly
Log Set
Piezo
Ignitor
Remote
Control
Control Knobs
Remote
Reciever
Chassis Assembly
REMOTE READY MODELS
REMOTE CONTROLLED MODELS
Lava Rock
Log Scraps
Lava Rock
Log Scraps
LOCAL CODES
Install and use appliance with care. Follow all local codes. In the
absence of local codes, use the latest edition of The National Fuel
Gas Code ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
NewYork, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
SAFETY INFORMATION
Continued
WARNING: Do not place log scraps or lava rocks
on burner.

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1. Remove log set assembly from carton. Note: Do not pick up
assembly by logs. This could damage the unit.Always handle
assembly by grate.
2. Remove control cover floor media components & remote
control if supplied.
3. Remove all protective packaging applied to log set for ship-
ment.
4. Check allitems for any shippingdamage. If damaged, promptly
inform dealer where you bought appliance.
UNPACKING
CAUTION:Donot removethedataplatesfromthe
grate assembly. The data plates contain important
warranty and safety information.
AIR FOR COMBUSTION AND
VENTILATION
Today’shomesarebuiltmoreenergyefficientthanever.Newmaterials,
increased insulation, and new construction methods help reduce heat
lossinhomes.Homeownersweatherstripand caulk aroundwindows
and doors to keep the cold air out and the warm air in. During heating
months, home owners want their homes as airtight as possible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home.All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,andfuelburningappliances
drawairfromthehousetooperate.Youmustprovideadequatefresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
WARNING:Thisapplianceshallnotbe installedin
a confined space or unusually tight construction un-
lessprovisionsareprovidedforadequatecombustion
andventilationair.Readthefollowing instructions to
insureproperfreshair forthis and other fuel-burning
appliances in your home.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Venti-
lation.
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.
UnusuallyTight Construction
The air that leaks around doors and windows may provide enough
freshairforcombustionandventilation.However,inbuildingsofun-
usually tight construction, you must provide additional fresh air.
OPTIONAL REMOTE CONTROLACCESSORIES
UNPACKING
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
OPTIONAL REMOTE CONTROL
ACCESSORIES
PRODUCT FEATURES
REMOTE READY & REMOTE CONTROLLED
This unitized gas log set is tested and approved to ANSI Z21.60a
and CSA 2.26a-2000 as a vented decorative appliance. This log set
has a piezo ignitor . This system requires no matches, batteries or
other source to light log set.
SAFETY DEVICE
This unit has a pilot with an Oxygen Depletion Sensing (ODS)
safetyshutoffsystem.TheODS/pilotshutsofftheapplianceifthere
is not enough fresh air.
PIEZO IGNITION SYSTEM
This unit has a piezo ignitor. This system requires no matches, bat-
teries, or other sources to light appliance.
There are two optional remote controls that can be purchased sepa-
rately for Remote-Ready Models:
• wall switch • hand-held ON/OFF remote
See Accessories, page 22.
The wall thermostat or hand-held thermostat may not be used with
vented decorative appliances.
Unusually tight construction is defined as construction
where:
a. walls and ceilingsexposedto the outside atmosphere
have a continuous water vapor retarder with a rating
of one perm (6 x 10-11 kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been added on openable win-
dows and doors and
c. caulking or sealants are applied to areas such as
joints around window and door frames,between sole
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 5.
Ifyourhome doesnot meetall ofthe threecriteria above,
proceed to Determining Fresh-Air Flow For Appliance
Location, below.
Providing Adequate Ventilation

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5
40,000
33,000
73,000
AIR FOR COMBUSTION AND
VENTILATION
Continued
WARNING: If the area in which the appliance
may be operated is smaller than that defined as an
unconfined space or if the building is of unusually
tightconstruction,provideadequatecombustionand
ventilation air by one of the methods described in
the National Fuel Gas Code, ANSI Z223.1/NFPA 54
Section 5.3 or applicable local codes.
DETERMINING FRESH-AIR FLOW FOR
APPLIANCE LOCATION
Determining ifYou Have a Confined or Unconfined
Space
Use this work sheet to determine if you have a confined or unconfined
space.
Space: Includes the room in which you will install appliance plus any
adjoining 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 toadjoiningroomissupplied withgrillsoropen-
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)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free appliance _____________ Btu/Hr
Gas water appliance* _____________ Btu/Hr
Gas furnace _____________ Btu/Hr
Vented gas appliance _____________ Btu/Hr
Gas fireplace logs _____________ Btu/Hr
Other gas appliances* + _____________ Btu/Hr
Total = _____________ Btu/Hr
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation (Cont.)
Determining Fresh-Air Flow forAppliance Location
Ventilation Air
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a
confined space as a space whose volume is less than 50 cubic feet
per 1,000 Btu per hour (4.8 m3per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as
a space 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 appli-
ances installed in that space. Rooms communicating directly with
the space in which the appliances are installed*, through openings
not furnished with doors, are considered a part of the unconfined
space.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
* Do not include direct-vent gas appliances. Direct-vent draws com-
bustion air from the outdoors and vents to the outdoors.
Example:
Gas water appliance _____________ Btu/Hr
Vent-free appliance + _____________ 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)
73,000 Btu/Hr (actual amount of Btu/Hr used)
The space in the above example is a confined space because the actual
Btu/Hr used is more than the maximum Btu/Hr the space can support.You
must provide additional fresh air.Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra
space providesanunconfined space,remove door to adjoiningroomor
add ventilation grills between rooms. See Ventilation Air From Inside
Building, page 6.
B. Vent room directly to the outdoors. See VentilationAir From Outdoors,
page 6.
C. Install a lower Btu/Hr appliance, if lower Btu/Hr size makes room uncon-
fined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can sup-
port, the space is an unconfined space.You will need no additional fresh air
ventilation.
VENTILATION AIR
Ventilation Air From Inside Building
Thisfreshairwouldcomefromanadjoiningunconfinedspace.When
ventilatingto anadjoining unconfined space,you must providetwo
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
Provide extra fresh air by using ventilation grills or ducts. You
must provide two permanent openings: one within 12" of the ceil-
ing and one within 12" of the floor. Connect these items directly to

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AIR FOR COMBUSTION AND
VENTILATION
Continued
Figure 3 -Ventilation Air from Outdoors
Figure 2 -Ventilation Air from Inside Building
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
I
nto Adjoining
Room,
Option 1
12"
12"
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air (Cont.)
the outdoors or spaces open to the outdoors. These spaces include
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.

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7
WARNING: Before installing in a solid fuel burn-
ing fireplace, the chimney flue and firebox must be
cleaned of soot, creosote, ashes and loose paint by
a qualified chimney cleaner. Creosote will ignite if
highly heated. A dirty chimney flue may create and
distributesootwithinthehouse.Inspectchimneyflue
for damage. If damaged, repair flue damper before
operating appliance.
INSTALLATION AND CLEARANCES
LOG SIZING REQUIREMENTS Min.
Minimum Firebox Size Flue size
Log Front Rear*
Size Height Depth Width Width
18" 17" 14" 24" 20" 8"
24" 17" 14" 28" 22" 8"
*Measured at 14" depth
Damper Clamp
Damper
Clamp Damper
Manufactured
Fireplace
Masonry Fireplace
Figure 6 - Attaching Damper Clamp
Damper Damper
INSTALLATION
Flue Opening Specifications
Installation and Clearances
Venting Specifications for Installation
Installing Damper Clamp
INSTALLATION
WARNING: Before installing in a solid fuel burn-
ing fireplace, the chimney flue and firebox must be
cleaned of soot, creosote, ashes and loose paint by
a qualified chimney cleaner. Creosote will ignite if
highly heated. A dirty chimney flue may create and
distribute soot within the house. Inspect chimney
flue for damage.
NOTICE: Installation, service, and repair of this ap-
pliance must be performed by a qualified installer,
serviceagency,companyorgassupplierexperienced
withthistypeofgasappliance.Onlyfactoryauthorized
components listed in these instructions may be used
in accordance with the manufacturer’s instructions
and all codes and requirements of the authority hav-
ing 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 noncom-
bustible material.
The charts in Figure 4 indicate technical information regarding the
installationofyourgas log set.Pleasemakesurethatallof thespec-
ifications 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 5.
CHECK GASTYPE
Use the correct gas type (natural or propane/LP) for your unit. If
your gas supply is not correct, do not instal in fireplace. Call dealer
where you bought the appliance for proper type of appliance.
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be drafting 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. Ob-
serve 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 damper must be fixed open to provide a minimum
of43sq.in.offreeairopeningduringoperationofthislogset.Amul-
tipurpose damper clamp is provided to fix the damper in position.
TheminimumfluesizesshowninFigure5arebasedona6'chimney
height using round pipe. Your minimum flue size will vary based
on input rate and chimney height. Refer to the National Fuel Gas
Code ANSI Z223.1/NFPA 54, Section 6.6, for details.
INSTALLING DAMPER CLAMP
Secure the damper stop clamp provided to the leading edge of the
damper as shown in Figure 6. If for any reason 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.
WARNING:Makesuretheselectorswitchis in the
OFF position before installing appliance .
Figure 4 -Technical Information Charts
SPECIFICATIONS (W.C.)
FUEL INLET MANIFOLD
PRESSURE PRESSURE
Min. Max.
NG 7 10.5 3.5
LP 11 14 10
Figure 5 - Sizes & Clearances

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Figure 7 - Attaching Flexible Gas Hose to Gas Regulator
Gas Control
Flexible Gas
Hose (if allowed
by local codes)
WARNING: This appliance requires a 3/8" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
WARNING:Aqualifiedservicepersonmustconnect
appliance to gas supply. Follow all local codes.
CAUTION: Never connect propane/LP fireplace
directly to the propane/LP supply.This unit requires
anexternalregulator(notsupplied).Installtheexternal
regulator between the unit and propane/LP supply.
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells.This gas is commonly
known as wellhead gas.
Installation Items Needed
Before installing appliance, make sure you have the items listed
below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved flexible gas line with gas connector (if allowed by local
codes) (provided)
* A CSA design-certified equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA design-certified equipment shutoff valve from
your dealer. See Accessories, page 22.
For propane/LP units, the installer must supply an external regu-
lator.Theexternalregulatorwillreduceincominggaspressure.You
must reduce incoming gas pressure to between 11 and 14 inches of
water. If you do not reduce incoming gas pressure, regulator dam-
age could occur. Install external regulator with the vent pointing
down as shown in Figure 8 page 9. Pointing the vent down protects
it from freezing rain or sleet.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in cer-
tain areas. Check your local codes. Use pipe of 1/2"
diameter or greater to allow proper gas volume to
appliance. If pipe is too small, undue loss of volume
will occur.
CONNECTINGTO GAS SUPPLY
INSTALLATION
Continued
INSTALLATION
Installing Appliance Assembly
Connecting To Gas Supply
WARNING: If installing in a sunken fireplace,spe-
cial care is needed.You must raise the fireplace floor
to allow access to appliance control panel. This will
insure adequate air flow and guard against sooting.
Raise fireplace floor with noncombustible material.
Make sure material is secure.
CAUTION: Do not pick up appliance assembly by
logs. This could damage unit. Only handle assembly
by grates.
IMPORTANT:Makesure theappliance is level. Ifunit is notlevel,
unit will not work properly.
Installation Items Needed
• control cover kit (provided with appliance)
• approved flexible gas hose and fittings (provided with appliance)
(if allowed by local codes)
• sealant (resistant to propane/LP gas, not provided)
Note: Install optional Hand-Held Remote Control Kit (see Acces-
sories,page 22) beforeinstalling gaslogappliance (Remote-Ready
Models Only). See installation instructions included with the kit.
1. Apply pipe joint sealant lightly to male threads of gas fitting
(not provided). Connect approved flexible gas hose to inlet side
of gas control (see Figure 7).
2. Position appliance in fireplace.
3. Connect to gas supply. See Connecting To Gas Supply.
INSTALLING APPLIANCE ASSEMBLY

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9
INSTALLATION
Continued
INSTALLATION
Connnecting to Gas Supply (cont.)
Checking Gas Connections
Pressure Testing Gas Supply Piping System
Propane/LP
Supply Tank
External Regulator
Figure 8 - External RegulatorWith Vent Pointing Down
Vent Pointing Down
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 9, depending on your model. 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 mois-
ture and contaminants. This keeps them from going into appliance
controls. If sediment trap is not installed or is installed wrong, ap-
pliance may not run properly.
CAUTION:Avoiddamage to gas control.Holdgas
controlwithwrenchwhenconnecting ittogaspiping
and/or fittings.
Figure 9 - Gas Connection
Gas Control
Pipe Cap Tee
Nipple Joint
3" Minimum
Sediment Trap
PROPANE/LP
- From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
NATURAL
- From Gas
Meter
(5" W.C.**
to 10.5" W.C.
Pressure)
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPTTap*
Approved Flexible
Gas Hose (if allowed
by local codes)
* Purchase the optional CSA design-certified equipment shutoff valve
from your dealer. See Accessories, page 22.
**Minimum inlet pressure for purpose of input adjustment.
WARNING: Test all gas piping and connections
forleaksafterinstallingorservicing.Correctallleaks
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.
CAUTION:Make sure external regulator has been
installed between propane/LP supply and appliance.
SeeguidelinesunderConnectingtoGasSupply,page
8.
PressureTesting gas Supply Piping system
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnectappliance with its appliance main gas valve (control
valve) and equipment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig will damage appliance
regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas, or using compressed
air.
CHECKING GAS CONNECTIONS
Installation must include an equipment shutoff valve, union, and
plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from appliance (see Figure
9).
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 clogged appliance valves.
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 appliance (see Figure
9).
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 clogged appliance valves.

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10
INSTALLATION
Continued
INSTALLATION
Pressure Testing Gas Supply Piping System (Cont.)
Pressure Testing Appliance Gas Connections
Figure 10 - Equipment ShutoffValve
ON
POSITION
OFF
POSITION
Open
Closed
Equipment
Shutoff
Valve
4. Check all joints of gas supply piping system. Apply noncorrosive
leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect appliance and equipment shutoff valve togas 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 10).
2. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas, or using compressed
air.
3. Check all joints from gas meter to equipment shutoff valve for
natural gasor propane/LP supplyto equipment shutoff valve for
propane/LP (see Figure 11).Apply noncorrosive leak detection
fluid to all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
PressureTesting Appliance Gas Connections
1. Open equipment shutoff valve (see Figure 10).
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 appliance is in the OFF position.
4. Check all joints from equipment shutoff valve to gas control
(see Figures 11 and 12). Apply noncorrosive leak detection
fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light appliance (see Operating Appliance, pages 11 through
13). Check all other internal joints for leaks.
7. Turn off appliance.
Figure 11- Checking Gas Joints (propane/LP only)
Figure 12 - Checking Gas Joints (Natural Gas Only)
Control Valve Location
Equipment
Shutoff Valve
Propane/LP
SupplyTank
Control Valve Location
Equipment
Shutoff Valve
Gas Meter

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11
11
OPERATING APPLIANCE
OPERATING APPLIANCE (REMOTE-READY MODELS)
ForYour Safety Read Before Lighting
Lighting Instructions
WARNING:If you do not follow these instructions
exactly,afireorexplosionmayresultcausingproperty
damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire de-
partment.
C. Useonlyyour hand to push in or turnthegascontrolknob.
Neverusetools. Ifthe knob willnot pushinor turnby hand,
don’t try to repair it, call a qualified service technician 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.
FORYOUR SAFETY READ
BEFORE LIGHTING
REMOTE-READY MODELS
5. Wait five (5) minutes to clear out any gas. Then smell for
gas,including nearthefloor.If yousmellgas, STOP!Follow
“B” in the safety information, starting in column 1 of this
page. If you don’t smell gas, go to the next step.
6. Press in and turn control knob counterclockwise
to the PILOT position. Press in control knob for five (5)
seconds (see Figure 13).
Note:You may be running this appliance for the first time
after hooking up to gas supply. If so, the control knob may
needto be pressedin for30secondsor more.Thiswillallow
air to bleed from the gas system.
WARNING: Burners will come on automatically
within one minute when the selector switch is in the
ON position after the pilot is lit.
1. STOP! Read the safety information, starting in column 1,
of this page.
2. Make sure equipment shutoff valve is fully open.
3. Set selector switch in the OFF position.
4. Press in and turn control knob clockwise to the
OFF position (see Figure 13).
LIGHTING INSTRUCTIONS
NOTICE: During initial operation of new appliance,
metallic components may emit an odor as paint and
assembly compounds are heated and cure. Be sure
to provide adequate fresh air if odors are detected.
WARNING:Damperhandlewillbehot if appliance
has been running.
Figure 13 - Control Knob and Ignitor Button Location,
Remote Ready Units.
O
F
F
P
I
L
O
T
O
N
L
O
I
H
AUTO
OFF
ON
Control Knob
Ignitor Button
Flame Adjustment Knob
Selector Switch in
OFF Position
WARNING: Keep flue open when operating unit.
7. Withcontrolknobpressedin,pressandreleaseignitorbut-
ton. This will light pilot. The pilot is attached to the front
burner. If needed, keep pressing ignitor button until pilot
lights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
lightpilot with match.Tolightpilot with match,seeManual
Lighting Procedure, page 12.
8. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob.
• If control knob does not pop out when released, contact
a qualified service person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4 through 8.
CAUTION: A mild gas flash may occur within 10
seconds of normal shutdown of this appliance. Re-
main clear of the hearth area for the entire shutdown
process to avoid possible injury.

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12 OPERATING APPLIANCE (REMOTE-READY MODELS)
Lighting Instructions (Cont.)
Remote Control Operations
OPERATING APPLIANCE
Continued
9. Slightly push in and turn control knob counterclockwise
to the ON position.
10. Wait one minute and switch selector switch to the ON po-
sition to light burners. Note: AUTO is not functional.
11. Set flame adjustment knob to any level between HI and
LO.
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
WARNING:Makesuretheselectorswitchis in the
OFF position when you are away from home for long
periodsoftime.Appliancewillcomeonautomatically
with selector switch in the ON position.
Shutting Off Appliance
1. Turn control knob clockwise to the OFF po-
sition.
2a. Set selector switch in the OFF position.
2b. IfUsing Optional Hand-Held Remote:Setselectorswitch
in the OFF position to prevent draining battery.
Shutting Off Burner Only (pilot stays lit)
You may shut off the burners and keep the pilot lit by doing
one of the following:
1. Turn control knob clockwise to the PILOT po-
sition.
2. Use remote control manual OFF button.
3. Set selector switch in the OFF position.
Figure 14 - Pilot (Propane/LP)
Ignitor
Electrode
Pilot
Burner
Pilot (Natural)
Ignitor
Electrode
Pilot
Burner
TOTURN OFF GASTO APPLIANCE
MANUAL LIGHTING PROCEDURE
1. Follow steps 1 through 6 under Lighting Instructions.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
steps 9 through 11, Lighting Instructions, column 1.
O
F
F
P
I
L
O
T
O
N
L
O
I
H
AUTO
OFF
ON
Control Knob
Ignitor Button Flame Adjustment Knob
Selector Switch in
OFF Position
REMOTE OFF ON
Remote Control Operation
GHRC Series Operation:
1. After lighting, let pilot flame burn for about one minute.
Turncontrolknob to ONposition.Adjust flameadjustment
knob anywhere between HI and LO. Slide the selector
switch to the REMOTE position. Note: The burners may
light if hand-held remote ON button was on when selector
switch was last turned off. You can now turn the burners
on and off with the hand-held remote control unit.
IMPORTANT: Do not leave the selector switch in the RE-
MOTE or ON position when the pilot is not lit. This will
drain the battery.
2. Press the ON/OFF button to turn the burners on and off.
When turning burners off, the pilot will remain lit.
IMPORTANT:Besure to pressthe ON/OFF buttonson the
hand-heldremotecontrolunit forup to 3 seconds to assure
proper operation.
Note: All additional remote control accessories must be pur-
chasedseparately(seeAccessories,page22).Followinstructions
included with the remote control.
REMOTE CONTROL OPERATION
Selector Toggle Switch
Remote Control
Figure15-SettingtheSelectorswitch,ControlKnob,andFlame
Adjustment Knob for Remote Operation

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13
13
OPERATING APPLIANCE (REMOTE-READY MODELS)
Lighting Instructions (Cont.
Remote Controlled Operation (Cont.)
Cleaning And Maintenance)
OPERATING APPLIANCE
Continued
INSPECTING BURNER
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 16 shows a correct pilot flame pattern. Figure 17 shows an
incorrectpilotflamepattern.Theincorrectpilotflameisnottouching
the thermocouple. This will cause the thermocouple to cool.When
the thermocouple cools, the appliance will shut down.
If pilot flame pattern is incorrect, as shown in Figure 17
• turn appliance off (see To Turn Off Gas to Appliance, page 12
• see Troubleshooting, pages 14 through 16
Note:The pilot flame on natural gas units will have a slight curve,
but flame should be blue and have no yellow or orange color.
Figure 16 - Correct Pilot Flame Pattern (Your pilot may vary
from pilots shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 17 - Incorrect Pilot Flame Pattern (Your pilot may vary
from pilots shown)
Thermocouple
Pilot Burner Pilot Burner
Thermocouple
BURNER FLAME PATTERN
Figure 18 shows correct burner flame pattern.
NOTICE: Do not mistake orange flames with yellow
tipping. Dirt or other fine particles are burned by ap-
pliance, causing brief patches of orange flame.
If burner flame pattern is incorrect, as shown in Figure 19
• turn appliance off (see To Turn Off Gas to Appliance, page 12
• see Troubleshooting, pages 14 through 16
Figure 18 - Correct Burner Flame Pattern
Yellow Tipping At Top
of Blue Flame
Figure 19 - Incorrect Burner Flame Pattern
CLEANING AND MAINTENANCE
• Keep the area around the log set clean and clear of debris.
• Periodically inspect the air mixer and burner tube for foreign
matter blocking the air inlet and flame holes.
• Once every year a qualified agency or certified chimney sweep
should examine and clean the venting system of the fireplace.

111826-02F
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14
TROUBLESHOOTING
Note: All troubleshooting items are listed
in order of operation.
WARNING: Turn off and un-
plugapplianceandletcoolbefore
servicing.Onlyaqualifiedservice
personshouldserviceandrepair
heater.
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot.ThiscandamageODS/
pilot unit.
POSSIBLE CAUSE
1. Ignitor electrodenot connectedto ignitor
cable
2. Ignitor cable pinched or wet
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode positioned wrong or
broken
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. Safety interlock system has been
triggered
4. Equipment shutoff valve not fully open
5. 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
6. Thermocouple connection loose at con-
trol valve
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Tighten nut holding piezo ignitorto base
panel of log set. Nut is located behind
base panel.
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assemblyfor remote-ready
units; Replace ignitor electrode for vari-
able manually controlled units
1. Turn on gas supply or open equipment
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is
removed
5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 13) or replace
ODS/pilot assembly
7. Replace gas regulator
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. Waitone minute for safety interlock sys-
tem to reset. Repeat ignition operation
4. Fully open equipment shutoff valve
5. A) Contact local natural or propane/LP
gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 13) or replace ODS/
pilot assembly
6. Hand tighten until snug, then tighten
1/4 turn more
7. Replace pilot assembly
8. Replace control valve
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
Whenignitorbuttonispressed,thereisspark
at ODS/pilot but no ignition
ODS/pilot lights but flame goes out when
control knob is released
Note: For additional help, visit DESA
International’s technical service web
site at www.desatech.com.
TROUBLESHOOTING

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15
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
One or both burner does not light after
ODS/pilot is lit
Delayed ignition of burner
Burner backfiring during combustion
Orange flame in burner during burner
combustion
Slight smoke or odor during initial op-
eration
Applianceproduces awhistling noisewhen
burners are lit
Whitepowderresidueformingwithinburner
box or on adjacent walls or furniture
Moisture/condensation noticed on win-
dows
REMEDY
1. Contact local natural or propane/LP gas
company
2. Clean burner(s) (see Cleaning and
Maintenance, page 13) orreplace burner
orifice(s)
3. Contact qualified service person
4. Replace burner orifice(s)
5. Put remote selector in ON position
6. See Wiring Diagram, page 18
1. Contact local natural or propane/LP gas
company
2. Clean burner(s) (see Cleaning and
Maintenance, page 13) orreplace burner
orifice(s)
3. Contact qualified service person
1. Clean burner (see Cleaning and Main-
tenance, page 13) or replace burner
orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner(s) for dirt and debris. If
found,clean burner(s)(seeCleaning and
Maintenance, page 13)
2. Replace gas regulator
1. Problem will stop after a few hours of
operation
1. Turn control knob to LO position and let
warm up for a minute
2. Operate burners until air is removed
from line. Have gas line checked by lo-
cal natural or propane/LP gas company
3. Observe minimum installation clear-
ances (see pages 7 through 8)
4. Clean burners (see Cleaning and Main-
tenance, page 13) or replace burner
orifice(s)
1. Turn appliance off when using furniture
polish, wax, carpet cleaners, or similar
products
1. Refer to Air for Combustion and Venti-
lation requirements (page 4)
POSSIBLE CAUSE
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
4. Burner orifice(s) diameter is too small
5. Remote selector in OFF position (Re-
mote-Ready Models Only)
6. Wire disconnected from gas control
(Remote-Ready Models Only)
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
1. Residues from manufacturing processes
and logs curing
1. Turning control knob to HI position
when burners are cold
2. Air in gas line
3. Air passageways on appliance blocked
4. Dirty or partially clogged burner
orifice(s)
1. When heated, vapors from furniture pol-
ish, wax, carpet cleaners, etc. turn into
white powder residue
1. Not enough combustion/ventilation air
TROUBLESHOOTING

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16
TROUBLESHOOTING
Continued
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. Follow
the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT:Operatingappliancewhereimpuritiesinairexistmaycreateodors.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.
POSSIBLE CAUSE
1. Battery is not installed. Battery power is
low
1. Metal expanding while heating or con-
tracting while cooling
1. Appliance burning vapors from paint,
hair spray, glues, cleaners, chemicals,
new carpet, etc. (See IMPORTANT
statement above)
2. Low fuel supply (propane/LP only)
3. Gas leak. See Warning statement at
top of page
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Gas leak. See Warning statement at
top of page
2. Control valve or gas control defective
1. Foreign matterbetween control valve and
burner
2. Gas leak. See Warning statement at
top of page
REMEDY
1. Replace 9-volt batteries in receiver and
remote control
1. This is common with most appliances. If
noiseis excessive,contact qualified service
person
1. Openwindowtoventilateroom.Stop using
odor causing products while appliance is
running
2. Refill supply tank (propane/LP only)
3. Locate and correct all leaks (see Checking
Gas Connections, page 9)
1. Open window and/or door for ventilation
2. Contact local natural or propane/LP gas
company
3. Clean ODS/pilot (see Cleaning and Main-
tenance, page 13)
1. Locate and correct all leaks (see Checking
Gas Connections, page 9)
2. Replace control valve or gas control
1. Take apart gas tubing and remove foreign
matter
2. Locate and correct all leaks (see Checking
Gas Connections, page 9)
OBSERVED PROBLEM
Remote does not function (Remote-Ready
Models Only)
Applianceproducesaclicking/tickingnoise
just after burners are lit or shut off
Appliance produces unwanted odors
Appliance shuts off in use (ODS operates)
Gas odor even when control knob is in OFF
position
Gas odor during combustion
TROUBLESHOOTING

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17
17
VTD-18N-PDG/VTD-18N-BTB VTD-24N-PDG/VTD-24N-BTB
Btu (Variable) 37,000/54,000 41,000/58,000
Type Gas Natural Gas Only Natural Gas Only
Ignition Piezo Piezo
Manifold Pressure 3.5" W.C. 3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5" W.C. 10.5" W.C.
Minimum* 5.0" W.C. 5.0" W.C.
Shipping Weight 32 lbs. 34 lbs.
* For purpose of input adjustment
VTD-18P-PDG/VTD-18P-BTB VTD-24P-PDG/VTD-24P-BTB
Btu (Variable) 30,000/46,000 41,000/58,000
Type Gas Propane/LP Only Propane/LP Only
Ignition Piezo Piezo
Manifold Pressure 10" W.C. 10" W.C.
Inlet Gas Pressure (in. of water)
Maximum 14" W.C. 14" W.C.
Minimum* 11" W.C. 11" W.C.
Shipping Weight 32 lbs. 34 lbs.
* For purpose of input adjustment
SPECIFICATIONS
SPECIFICATIONS

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18
SERVICE HINTS
When Gas Pressure IsToo Low
• pilot will not stay lit
• burners will have delayed ignition
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, contact your local
propane/LP or natural gas supplier.
TECHNICAL SERVICE
You may have further questions about installation, operation, or
troubleshooting. If so, contact DESA International’s 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 DESA International’s 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 can’t supply
original replacement part(s), call DESA International’s Technical
Service Department at 1-866-672-6040.
When calling DESA International, have ready
• your name
• your address
• model and serial numbers of your appliance
• how appliance 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 UNDERWARRANTY
Contactauthorizeddealersofthisproduct.Iftheycan’tsupplyoriginal
replacement part(s), call DESA International at 1-866-672-6040 for
referral information.
When calling DESA International, have ready
• model number of your appliance
• the replacement part number
WIRING DIAGRAM
(Remote-Ready Models Only)
AUTO
OFF
ON
Thermopile
WIRING DIAGRAM (REMOTE-READY MODELS ONLY)
SERVICE HINTS
TECHNICAL SERVICE
REPLACEMENT PARTS

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19
19
THIS PAGE INTENTIONALLY LEFT BLANK

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20
ILLUSTRATED PARTS
BREAKDOWN
REMOTE-READY MODELS AND
REMOTE CONTROLLED MODELS
VTD-24N-PDG VTD-24N-BTB
VTD-24P-PDG VTD-24P-BTB
VTD-18N-PDG VTD-18N-BTB
VTD-18P-PDG VTD-18P-BTB
ILLUSTRATED PARTS BREAKDOWN
VTD-24N-PDG, VTD-24P-PDG, VTD-24N-BTB, VTD-24P-BTB
VTD-18N-PDG, VTD-18P-PDG, VTD-18N-BTB, VTD-18P-BTB
3
Log sets and
mounting
plates are
ordered as an
assembly
REMOTE MODELS ONLY
GTA Replacement Part Numbers
Model Number GTA Part number
VTD-24N-PDG 111794 01
VTD-24N-BTB
VTD-24P-PDG 111794 05
VTD-24P-BTB
VTD-18N-PDG 111794 03
VTD-18N-BTB
VTD-18P-PDG 111794 04
VTD-18P-BTB
ITEM #5 (AIR SHUTTER) INSTALLATION
NOTES:
FOR NG---FULLY CLOSED
FOR LP----FULLY OPEN