Desa VYGF33PR Quick start guide

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Shown with
optional cabinet
mantel, hearth
base, and trim
accessories.
Save this manual for future reference.
®
WARNING: If the information in this manual is not
followedexactly,afireorexplosionmayresultcausing
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.
• Donottouchanyelectrical switch;donot useany
phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s in-
structions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a
qualified installer, service agency, or the gas supplier.
WARNING: Improper installa-
tion,adjustment,alteration,ser-
vice,ormaintenancecancause
injury or property damage. Re-
fer to this manual for correct
installationandoperationalpro-
cedures. For assistance or ad-
ditional information consult a
qualified installer, service
agency, or the gas supplier.
WARNING:Thisisanunvented
gas-firedheater.Itusesair(oxy-
gen) from the room in which it
is installed. Provisions for ad-
equate combustion and venti-
lation air must be provided.
Referto AirforCombustionand
Ventilation sectiononpage4of
this manual.
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited by
state or local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
DESA INTERNATIONAL
UNVENTED (VENT-FREE)
PROPANE/LP GAS FIREPLACE
VYGF33PR
REMOTE READY
GAS FIREPLACE
SYSTEM
OWNER’S OPERATION AND INSTALLATION MANUAL

2
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
1. This appliance is only for use with the
typeof gasindicated onthe ratingplate.
Thisappliance isnot convertiblefor use
with other gases.
2. Do not place propane supply tank(s)
inside any structure. Locate propane
supply tank(s) outdoors.
SAFETY
INFORMATION
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early
signs of carbon monoxide poisoning re-
semble the flu, with headaches, dizziness,
or nausea. If you have these signs, the fire-
place 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 preg-
nant women, people with heart or lung dis-
easeoranemia,thoseunderthe influenceof
alcohol, and those at high altitudes.
PropaneGas:Propanegasisodorless.An
odor-making agent is added to the gas. The
odor helps you detect a gas leak. However,
theodor added tothe gascan 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 fireplace.
WARNINGS
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, oper-
ate, or service this fireplace. Im-
proper use of this fireplace can
causeseriousinjuryordeathfrom
burns, fire, explosion, electrical
shock, and carbon monoxide
poisoning.
WARNING:Anychangetothis
fireplace or its controls can be
dangerous.
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
• ifyou cannotreach your gassupplier,
call the fire department
4. This fireplace shall not be installed in
a bedroom or bathroom.
5. Never install the fireplace
• in a recreational vehicle
• wherecurtains, furniture,clothing, or
otherflammableobjects areless than
36inches from thefront, top,or sides
of the fireplace
• in high traffic areas
• in windy or drafty areas
6. Do not use this fireplace as a wood-
burning fireplace. Use only the logs
provided with the fireplace.
7. Do not add extra logs or ornaments
suchaspine cones,vermiculite, orrock
wool. Using these added items can
cause sooting. Do not add lava rock
aroundbase. Rock anddebris couldfall
into the control area of fireplace.
8. Youmust operatethis fireplace withthe
fireplace screen and hood in place.
Make sure fireplace screen and hood
are in place before running fireplace.
9. This fireplace is designed to be smoke-
less. If logs ever appear to smoke, turn
off fireplace and call a qualified ser-
vice person. Note: During initial op-
eration,slight smoking couldoccur due
to log curing and fireplace burning
manufacturing residues.
10. Do not allow fans to blow directly into
the fireplace. Avoid any drafts that al-
ter burner flame patterns. Ceiling fans
can create drafts that alter burner flame
patterns. Altered burner patterns can
cause sooting.
11. Before usingfurniture polish,wax, car-
pet cleaner, or similar products, turn
heater off. If heated, the vapors from
theseproductsmay createa whitepow-
der residue within burner box or on ad-
jacent walls or funiture.
12. Do not use a blower insert, heat ex-
changer insert, fireplace hood or other
accessorynot approvedfor usewiththis
heater.
13. This fireplace needs fresh air ventila-
tion to run properly. This fireplace has
an oxygen depletion sensor (ODS) pi-
lot light safety system. The ODS shuts
down the fireplace if not enough fresh
air is available. See Air for Combus-
tion and Ventilation, pages 4 through
6. If fireplace keeps shutting off, see
Troubleshooting, pages 17 through 19.
14. Do not run fireplace
• where flammable liquids or vapors
are used or stored
• under dusty conditions
15. Do not use this fireplace to cook food
or burn paper or other objects.
16. Neverplaceany objectsin thefireplace
or on logs.
17. Fireplace front and screen becomes
very hot when running fireplace. Keep
children and adults away from hot sur-
faces to avoid burns or clothing igni-
tion. Fireplace will remain hot for a
time after shut-down. Allow surfaces
to cool before touching.
18. Carefully supervise young children
when they are in the room with
fireplace.
19. Do notuse fireplaceif anypart hasbeen
exposedto orunder water.Immediately
call a qualified service technician to
inspect the fireplace and to replace any
part of the control system and any gas
control which has been under water.
20. Do not operate fireplace if any log is
broken. Do not operate fireplace if a
log is chipped (dime-sized or larger).
21. Turn fireplace off and let cool before
servicing. Only a qualified service per-
son should service and repair fireplace.
22. Operating fireplaceabove elevationsof
4,500 feet could cause pilot outage.
23. To prevent performance problems, do
not use propane fuel tanks of less than
100 lbs. capacity.

3
104353
OWNER’S MANUAL
AUTO
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PRODUCT
IDENTIFICATION
Figure 1 - Log Base Assembly
One Piece Log Set
Remote Selector
Switch (Optional)
Piezo
Ignitor
Figure 2 - Fireplace
Top Louver
Assembly
Firebox
Hood
Bottom Louver
Assembly
Screen
Assembly
Top Outer
Casing
Firebox
Support
Blower Assembly
(Optional)
LOCAL CODES
Install and use fireplace with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code ANS Z223.1, also known as 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
1. With utility knife, cut the carton all the
way around above the staples on the
bottom tray. Lift the carton off the
heater. Remove packing. Note: The
hood is located in the packing on the
right hand side of the heater front. Lift
the heater off the bottom tray.
2. Locate two screws above top corners
of the fireplace screen. Remove and
discard these screws. Lift fireplace
screen up and pull out to remove.
3. Remove protective packaging applied
to logs, log base assembly, and
fireplace.
4. Remove fireplace hood from carton
insert.
5. Check all items for any shipping dam-
age. If damaged, promptly inform
dealer where you bought fireplace.
Optional Remote
Control
REMOTE CONTROL
ACCESSORIES
Thereare fouroptional remotecontrolsthat
can be purchased separately for this log
heater:
• wall switch
• wall thermostat
• hand held ON/OFF remote
• hand held thermostat remote
See Accessories, pages 22 and 23.
Control
Knobs

4
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
AIR FOR
COMBUSTION AND
VENTILATION
Today’s homes are built more energy effi-
cient than ever. New materials, increased
insulation, and new construction methods
helpreduceheatlossinhomes.Homeowners
weather strip and caulk around windows and
doorstokeepthecoldairoutandthewarmair
in. During heating months, home owners
want their homes as airtight as possible.
While it is good to make your home energy
efficient,yourhomeneedstobreathe.Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com-
bustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,and
fuel burning appliances draw air from the
house to operate. You must provide ad-
equate fresh air for these appliances. This
will insure proper venting of vented fuel-
burning appliances.
Confined Space and Unconfined
Space
The National Fuel Gas Code (ANS Z223.1,
1992 Section 5.3) defines a confined space
as a space whose volume is less than 50
cubicfeetper1,000Btuperhour(4.8m3per
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
inputratingofallappliancesinstalledinthat
space.Rooms communicatingdirectlywith
the space in which the appliances are in-
stalled*, through openings not furnished
with doors, are considered a part of the
unconfined space.
This heater shall not be installed in a con-
fined space or unusually tight construction
unlessprovisions areprovided foradequate
combustion and ventilation air.
*Adjoiningroomsarecommunicatingonly
iftherearedoorlesspassagewaysorventila-
tion grills between them.
PROVIDING ADEQUATE
VENTILATION
ThefollowingisexerptsfromNationalFuel
Gas Code. NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation.
Allspacesinhomesfallintooneofthethree
following ventilation classifications:
1. Unusually Tight Contruction
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 win-
dowsmayprovideenoughfreshairforcom-
bustion and ventilation. However, in build-
PRODUCT
FEATURES
Operation
This vent-free fireplace is clean burning. It
requiresnooutsideventing.Thereisnoheat
loss out a vent or up a chimney. Heat is
generatedbybothrealisticflamesandglow-
ing embers. When used without the blower,
the fireplace requires no electricity making
it ideal for emergency back-up heat.
Safety Device
This fireplace has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).
The ODS/pilot is a required feature for vent-
freeroomheaters.TheODSsystemshutsoff
the fireplace if there is not enough fresh air.
Piezo Ignition System
This fireplace has a piezo ignitor. This sys-
tem requires no matches, batteries, or other
sources to light fireplace.
Blower Assembly (GA3700 &
GA3700T)
This fireplace accepts an optional blower
assembly. The blower operates
thermostatically. The blower circulates
heated air from the fireplace into the room.
Use of blower is optional. See Accessories,
pages 22 and 23.
WARNING: This heater shall
notbeinstalledinaconfinedspace
unless provisions are provided
foradequatecombustionandven-
tilation air. Read the following in-
structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
ings of unusually tight construction, you
must provide additional fresh air.
Unusually tight construction is de-
fined as construction where:
a. walls and ceilings exposed to the
outside atmosphere have a con-
tinuous water vapor retarder with
a rating of one perm (6 x 10-11 kg
per pa-sec-m2) or less with open-
ings gasketed or sealed and
b. weather stripping has been
added on openable windows and
doors and
c. caulking or sealants are applied
to areas such as joints around
window and door frames, be-
tween sole plates and floors,be-
tween wall-ceiling joints, be-
tween wall panels, at penetra-
tionsforplumbing,electrical,and
gas lines, and at other openings.
If your home meets all of the three
criteria above, you must provide ad-
ditional fresh air. See Ventilation Air
From Outdoors , page 6 .
If your home does not meet all of the
threecriteriaabove,proceedto Deter-
mining Fresh-Air Flow for Fireplace
Location on page 5.

5
104353
OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR FIREPLACE LOCATION
Determining if You 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 fireplace 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 22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling height) = 3168 cu. ft. (volume of space)
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of
the space.
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
___________ (volume of space) ÷50 cu. ft. = (Maximum Btu/Hr the space can support)
Example: 3168 cu. ft.(volume of space) ÷50 cu. ft. = 63.3 or 63,300 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free fireplace ____________________ 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 combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
_________ Btu/Hr (maximum the space can support)
_________ Btu/Hr (actual amount of Btu/Hr used)
Example: 63,300 Btu/Hr (maximum the space can support)
73,000 Btu/Hr (actual amount of Btu/Hr used)
ThespaceintheaboveexampleisaconfinedspacebecausetheactualBtu/HrusedismorethanthemaximumBtu/Hrthespacecansupport.
You must provide additional fresh air. Your options are as follows:
A. Rework work sheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-
ing room or add ventilation grills between rooms. See Ventilation Air from Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air from Outdoors, page 6.
C. Install a lower Btu/Hr fireplace, 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, the space is an unconfined space. You will need no
additional fresh air ventilation.
Continued
WARNING:Iftheareainwhichtheheatermaybeoperatedissmallerthanthatdefinedasanunconfinedspace
or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of
the methods described in the National Fuel Gas Code, ANS Z223.1, 1992, Section 5.3 or applicable local codes.
Example:
Gas water heater 40,000 Btu/Hr
Vent-free fireplace +33,000 Btu/Hr
Total =73,000 Btu/Hr

6
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside
Building
Thisfreshairwouldcomefromanadjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must pro-
vide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(seeoptions1and2,Figure3).Youcanalso
remove door into adjoining room (see op-
tion 3, Figure 3). Follow the National Fuel
Gas Code NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
Figure 4 - Ventilation Air from Outdoors
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two per-
manent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connecttheseitemsdirectlytotheoutdoors
orspacesopentotheoutdoors.Thesespaces
include attics and crawl spaces.
IMPORTANT: Do notprovideopenings for
inlet or outlet air into attic if attic has a
thermostat-controlledpowervent.Heatedair
enteringtheatticwillactivatethepowervent.
Figure 3 - Ventilation Air from Inside Building
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
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Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
WARNING: Rework work-
sheet, adding the space of the
adjoiningunconfinedspace.The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.

7
104353
OWNER’S MANUAL
INSTALLATION
Continued
Note: Your fireplaceisdesignedto beused
inzeroclearanceinstallations.Wallorfram-
ing material can be placed directly against
anyexteriorsurfaceontherear,sides,ortop
of your fireplace, except where stand-off
bracketsareintegrallyattached.Ifstand-off
bracketsareattachedtoyourfireplace,these
brackets can be placed directly against wall
or framing materials.
Figure 5 - Installing Hood to Firebox
CAUTION: This fireplace cre-
ateswarmaircurrents.Thesecur-
rents move heat to wall surfaces
next to fireplace. Installing fire-
place next to vinyl or cloth wall
coverings or operating fireplace
where impurities (such as to-
bacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls.
NOTICE: A qualified service per-
sonmustinstallfireplace.Follow
all local codes.
WARNING: Never install the
fireplace
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objectsarelessthan36inches
from the front, top, or sides of
the fireplace
• in high traffic areas
• in windy or drafty areas
NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your pri-
mary heat source. If you have a
centralheating system,you may
run system's circulating blower
whileusingheater.Thiswillhelp
circulatetheheatthroughoutthe
house. In the event of a power
outage, you can use this heater
as your primary heat source.
Figure 6 - Assembling Brass Trim
IMPORTANT: Ifyouarerecessingthefire-
boxin awall, do notattach brasstrim atthis
time. See page 9.
ASSEMBLING AND
ATTACHING OPTIONAL
BRASS TRIM
(Included with Mantel
Accessory)
Side Brass
Trim
Top
Brass
Trim
Slot
Mitered Edge
Slot
Shim
Set Screws
Adjusting
Plate
Note: The instructions below show assem-
bling and attaching brass trim to fireplace.
1. Remove packaging from three pieces
of brass trim.
2. Locate four brass screws, two adjust-
ing plates with set screws, and two
shims in the hardware packet.
3. Align shim under adjusting plate as
shown in Figure 6.
4. Slide one end of adjusting plate/shim
inslot on miterededge oftop brasstrim
(see Figure 6).
5. Slide other end of adjusting plate/shim
in slot on mitered edge of side brass
trim (see Figure 6).
6. While firmly holding edges of brass
trim together, tighten both set screws
on the adjusting plate with slotted
screwdriver.
7. Repeat steps 1 through 6 for other side.
8. Tighten trim hanging screws (#10 x
6.25 shoulder) into holes in cabinets.
Placetheassembled trimonto fireplace
cabinet.Align hanging notches on trim
with hanging screws on side of fire-
place (see Figure 7). Push trim firmly
intoplace, slidinghanging notchesover
hanging screws.
Use the dimensions shown for rough open-
ings to create the easiest installation. See
Built-In Fireplace Installation, page 9.
IMPORTANT: Vent-freeheatersaddmois-
ture to the air. Although this is beneficial,
installingfireplaceinroomswithoutenough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation, pages 4 through 6.
IMPORTANT: Make sure the fireplace is
level.Iffireplaceisnotlevel,logsetwillnot
work properly.
CHECK GAS TYPE
Use only propane gas. If your gas supply is
not propane gas, do not install fireplace.
Call dealer where you bought fireplace for
proper type fireplace.
ELECTRICAL HOOKUP
(Optional GA3700 and GA3700T
Blower Accessory )
This fireplace accepts a blower assembly
with an electrical cord. The electrical cord is
five feet in length. You must locate fireplace
withinreachofa120voltgroundedelectrical
outlet. If not, you must install an electrical
outlet within reach of fireplace power cord.
INSTALLING HOOD
Install hood to top of firebox as shown in
Figure 5. Use 3 Phillips screws provided.
Figure 7 - Attaching Brass Trim to
Fireplace
Trim
Hanging
Screws
Assembled
Brass Trim
Hanging
Notches
on Trim

8
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
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42"
16"
Face or
Cabinet
Mantel
Corner
Mantel
12"
Figure 10 - Installing Cabinet Mantel
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INSTALLATION
CLEARANCES
WARNING:Maintainthemini-
mum clearances. If you can, pro-
vide greater clearances from
floor, ceiling, and adjoining wall.
Carefullyfollowtheinstructionsbelow.This
will ensure safe installation.
Minimum Wall and Ceiling
Clearances (see Figure 8)
A. Clearances from the side of the fire-
place opening to any combustible wall
should not be less than 16 inches for a
cabinet mantel or 12 inches for a cor-
ner installation.
B. Clearancesfrom the topof thefireplace
openingto theceiling shouldnot beless
than 42 inches.
CONVENTIONAL FIREPLACE
INSTALLATION
Conventional installation of this fireplace
involves installing fireplace along with the
corner, face, or cabinet mantel with hearth
baseaccessoriesagainstawallinyourhome.
Follow the instructions below to install the
fireplace in this manner.
Note: Theinstructionsbelowshowinstalla-
tion using the cabinet mantel and the
G3000F/G3001U/G3004W/G3006F/
G3007Userieshearthbaseaccessories.The
hearth base accessory shown is optional for
this installation. You can install fireplace
andcabinetmanteldirectlyonthefloor.The
cornermantel accessorycannot beinstalled
with the G3000F/G3001U/G3004W/
G3006F/G3007U hearth bases. You must
installcornerandfacemanteldirectlyonthe
floor. If mounting fireplace and cabinet
mantel to the floor or using corner mantel,
an optional G3005 Slim Base kit may be
installed.
1. Assemble cabinet mantel, hearth base,
andtrim accessories.Assembly instruc-
tions are included with each accessory.
2. When installing blower, install a prop-
erly grounded, 120 volt three-prong
electrical outlet at fireplace location if
an outlet is not there. If possible, lo-
cate outlet so cabinet mantel will cover
it when installed (see Figure 9).
3. Install gas piping to fireplace location.
This installation includes an approved
flexible gas line (if allowed by local
codes) after the manual shutoff valve.
The flexible gas line must be the last
iteminstalledon thegas piping.See In-
stalling Gas Piping to Fireplace Loca-
tion, page 10.
4. Place hearth base accessory against
Figure8-MinimumClearancetoWalland
Ceiling
wall at installation location. Cut an ac-
cess hole in hearth top to run flexible
gas line to fireplace (see Figure 9).
Makesure tolocate access holeso cabi-
net mantel will cover it when installed.
Note: You can secure base to floor us-
ing wood screws. Countersink screw
heads and putty over.
5. Route flexible gas line through access
hole in hearth base.
6. Center cabinet mantel on hearth base
(see Figure 10). Make sure mantel is
flush against wall.
7. Break off nailing flanges (see Figure
11) with hammer or pliers.
8. Place cardboard or other protective
material on top of hearth base. Care-
fully set fireplace on protective mate-
rial, with back of fireplace inside man-
tel opening.
9. Attach flexible gas line to fireplace gas
regulator. See Connecting Fireplace to
Figure9-PlacingHearthBaseAccessory
Against Wall
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Electrical
Outlet
Hearth
Base Flexible
Gas Line
Gas
Line
Access
Hole
Cabinet
Mantel
INSTALLATION
Continued
Note : Clearances
are the same if
using optional
cabinet mantel or
built-in installation.
MINIMUM
CLEARANCE
Side Wall - 16"
Cabinet and
Face Mantel
Ceiling - 42"
Corner Mantel
Floor - 0"

9
104353
OWNER’S MANUAL
INSTALLATION
Continued
Figure12-InsertingFireplaceIntoCabinet
Mantel
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Figure 11 - Location of Nailing Flanges
Nailing
Flanges
Continued
Gas Supply, page 11.
10. If bloweris installed,route blowerelec-
trical cord through access holes in ei-
ther side of fireplace. Note: Bushing
may be moved if necessary. Plug elec-
trical cord into electrical outlet.
11. Carefully insert fireplace into cabinet
mantel. Be careful not to scratch or
damage hearth base, cabinet mantel, or
any laminate trim on hearth base. Re-
move protective material from top of
hearth base and from front of fireplace
(ifany). Note: You cansecure fireplace
to hearth or floor. Open lower louver.
Locate screw holes in bottom of base.
Tighten wood screws through these
holes and into hearth or floor.
12. Check allgas connectionsfor leaks.See
Checking Gas Connections, page 12.
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
35 1/2"
17 3/4"
33"
Figure 13 - Rough Opening for Installing
in Wall
BUILT-IN FIREPLACE
INSTALLATION
Built-ininstallationofthisfireplaceinvolves
installing fireplace into a framed-in enclo-
sure. This makes the front of fireplace flush
with wall. If installing a mantel above the
fireplace, you must follow the clearances
shown in Figure 16, page 10. Follow the
instructions below to install the fireplace in
this manner.
Figure 15 - Attaching Fireplace to Wall
Studs
Nailing Flanges
Nails or
Wood
Screws
39 3/8" 27 7/8"
55 5/8"
35 1/2"
Figure 14 - Rough Opening for Installing
in Corner
1. Frame in rough opening. Use dimen-
sions shown in Figure 13 for the rough
opening.
If installing in a corner, use dimensions
shown in Figure 14 for the rough open-
ing.Theheight is 33"which isthe same
as the wall opening above.
2. If using blower, install and properly
ground GA3555, three-prong 120 volt
electrical outlet, in fireplace. Follow
instructions included in kit (see Acces-
sories, page 22).
3. Install gas piping to fireplace location.
This installation includes an approved
flexible gas line (if allowed by local
codes) after the manual shutoff valve.
The flexible gas line must be the last
iteminstalledon thegas piping.See In-
stalling Gas Piping to Fireplace Loca-
tion, page 10.
4. Carefully set fireplace in front of rough
opening with back of fireplace inside
wall opening.
5. Attach flexible gas line to gas supply.
See Connecting Fireplace to Gas Sup-
ply, page 11.
6. Plug electrical cord into electrical out-
let installed in step 2.
7. Carefully insert fireplace into rough
opening.
8. Attach fireplace to wall studs using
nails or wood screws through holes in
nailing flange (see Figure 15).
9. Check allgas connectionsforleaks. See
Checking Gas Connections, page 12.
10. Install brass trim after final finishing
and/or painting of wall (see Figure 7,
page 7).

10
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
yourlocalcodes.Usepipeof1/2"
diameter or greater to allow
propergasvolumetofireplace.If
pipe is too small, undue loss of
pressure will occur.
INSTALLATION
Continued
Mantel Clearances for Built-In
Installation
If placing mantel above built-in fireplace,
youmustmeetminimumclearancebetween
mantel shelf and top of fireplace opening.
If your installation does not meet the above
minimum clearances, you must:
• raise the mantel to an acceptable height,
OR
• remove the mantel.
INSTALLING GAS PIPING TO
FIREPLACE LOCATION
NOTICE: A qualified service per-
son must connect fireplace to
gassupply.Followalllocalcodes.
CAUTION: Never connect
heaterdirectlytothepropanesup-
ply. This heater requires an exter-
nalregulator(notsupplied).Install
theexternal regulatorbetween the
heater and propane supply.
Figure 17 - External Regulator with Vent
Pointing Down
Propane
Supply
Tank
External
Regulator
Vent
Pointing
Down
Figure 16 - Minimum Mantel Clearances for Built-In Installation
Supplied Firebox
Hood Must Be
Used at All Times
Wire-mesh
Screen
Firebox
Non-combustible
Material May
Project Off this
Surface above
the Firebox Hood
Mantel Shelf
13" 16" 19" 21"
2 1/2"
6"
8"
10"




Note: All vertical
measurements are
from top of fireplace
hood opening to bottom
of mantel shelf.
These minimum
clearances replace any
other recommended
clearances supplied with
your ANSI Z21.11.2
approved gas logs.
Wall board or facing
material (above
firebox) may be of
combustible material,
including decorative
mantel ornaments or
other similar projec-
tions off of the facing
material.
Framing
Material
Installation Items Needed
Before installing fireplace, make sure you
have the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to LP/propane gas)
• manual shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• approved flexible gas line with gas con-
nector (if allowed by local codes) (not
provided)
* AnA.G.A.design-certifiedmanualshutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-
chase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See
Accessories, pages 22 and 23.
The installer must supply an external regu-
lator. The external regulator will reduce
incoming gas pressure. You must reduce
incominggaspressuretobetween11and14
inchesofwater.Ifyoudonotreduceincom-
ing gas pressure, heater regulator damage
could occur. Install external regulator with
the vent pointing down as shown in Figure
17. Pointing the vent down protects it from
freezing rain or sleet.

11
104353
OWNER’S MANUAL
Figure19-RemovingLogBaseAssembly
From Fireplace
CAUTION: Do not pick up log
base assembly by burners. This
could damage burners. Only
handle base by grates.
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not
provided)
1. Remove fireplace screen. Remove two
screws that hold fireplace screen in
place for shipping. These screws are
located near top of screen. Discard
screws.Lift fireplacescreen upand pull
out to remove.
2. Remove screws that attach log base
assembly to fireplace (see Figure 19).
Carefully lift up log base assembly and
remove from fireplace (see Figure 19).
Note: Ifadding theG8000seriesbrickliner
accessory, install it now. Follow instruc-
tions in G8000 accessory kit.
CONNECTING FIREPLACE
TO GAS SUPPLY
INSTALLATION
Continued
Figure 20 - Attaching Flexible Gas Lines Together
NOTICE:Mostbuildingcodesdo
not permit concealed gas con-
nections. A flexible gas line is
provided to allow accessibility
fromthefireplace(seeFigure20).
The flexible gas supply line con-
nection to the manual shutoff
valve should be accessible.
Flexible Gas Line from
Fireplace Gas Regulator
Provided with Fireplace
To Fireplace
Gas Regulator Flare Union
Flexible Gas Line from
Manual Shutoff Valve
Provided by Installer
Manual Shutoff Valve
➞
➞
To Gas Supply
3. Route flexible gas line (provided by
installer) from manual shutoff valve to
fireplace.Route flexiblegas supplyline
through one of the access holes.
Figure 18 - Gas Connection
* Purchase the optional A.G.A. design-cer-
tifiedmanualshutoffvalvefromyourdealer.
See Accessories, pages 22 and 23.
Installation must include a manual 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 17, page 10).
Check your building codes for any special
requirements for locating manual shutoff
valve to fireplaces.
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
fromgoing intopipe. Excesssealant inpipe
could result in clogged fireplace valves.
Continued
CAUTION:Usepipejointseal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Installsedimenttrapinsupplylineasshown
in Figure 18. Locate sediment trap where it
is within reach for cleaning. Locate sedi-
menttrap where trappedmatter isnot likely
to freeze. A sediment trap traps moisture
and contaminants. This keeps them from
going into fireplace gas controls. If sedi-
ment trap is not installed or is installed
wrong, fireplace may not run properly.
4. Attach a 45°flare union gas connector
toflexible gas linefrom gassupply (see
Figure 20). Connect flare union to flex-
ible gas line attached to gas regulator
of fireplace (see Figure 20).
5. Check allgas connectionsforleaks. See
Checking Gas Connections, page 12.
6. Replace log base assembly back into
fireplace.Feed flexiblegaslineintofire-
placebase areawhile replacinglog base
assembly. Make sure the entire flexible
gas line is in fireplace base area. Reat-
tachlog baseassembly to fireplacewith
screws removed in step 2.
A.G.A. Design-
Certified Manual
Shutoff Valve With
1/8" NPT Tap*
3" Minimum
From Gas
Meter (11"
W.C. to
14" W.C.
Pressure)
Approved Flexible
Gas Line
Cap Pipe Tee
Nipple Joint
Sediment Trap

12
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
,,,,,,,,,,
,,,,,,,,,,
,,,,,,,,,,
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¢¢¢¢¢¢¢¢¢¢
¢¢¢¢¢¢¢¢¢¢
Manual Shutoff Valve
Manual Gas Valve
Propane Supply
Tank
INSTALLATION
Continued
TestPressuresEqualToorLessThan
1/2 PSIG
1. Close manual shutoff valve (see Fig-
ure 21).
2. Pressurize supply piping system by ei-
ther using compressed air or opening
propane/LP supply tank valve.
3. Check all joints from propane/LP sup-
ply to manual shutoff valve (see Fig-
ure 22). Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.
4. Correct all leaks at once.
Pressure Testing Fireplace Gas
Connections
1. Open manual shutoff valve (see Fig-
ure 21).
2. Open propane/LP supply tank valve.
3. Make sure control knob of fireplace is
in the OFF position.
Figure 21 - Manual Shutoff Valve
ON
POSITION
OFF
POSITION
Open
Closed
Manual
Shutoff
Valve
Figure 22 - Checking Gas Joints
Pressure Testing Gas Supply
Piping System
TestPressuresInExcessOf1/2PSIG
1. Disconnect fireplace and its individual
manual shutoff valve from gas supply
pipingsystem. Pressuresin excessof 1/2
psig will damage fireplace gas regulator.
2. Cap off open end of gas pipe where
manual shutoff valve was connected.
3. Pressurize supply piping system by ei-
ther using compressed air or opening
propane/LP supply tank valve.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.
5. Correct all leaks at once.
6. Re-connect fireplace and manual
shutoff valve to gas supply. Check re-
connected fittings for leaks.
CHECKING GAS
CONNECTIONS
WARNING: Test all gas pip-
ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.
WARNING:Neveruseanopen
flame to check for a leak. Apply a
mixture of liquid soap and water
to all joints. Bubbles forming
show a leak. Correct all leaks at
once.
4. Check all joints from manual shutoff
valve to thermostat gas valve (see Fig-
ure 22). Apply mixture of liquid soap
and water to gas joints. Bubbles form-
ing show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fire-
place, pages 14 through 16). Check all
other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas
to Appliance, page 15).

13
104353
OWNER’S MANUAL
O
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P
I
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O
T
O
N
H
I
L
O
Figure 23 - Installing One Piece Log Set
Chassis "U"-shaped
Cutout in
Chassis
One Piece
Log Set
INSTALLATION
Continued
One Piece Log Set
Burner Ports
Figure 24 - Installing One Piece Log Set
(Top View)
Notches
Figure 25 - Installing Fireplace Screen
WARNING: After installation
andperiodicallythereafter,check
to ensure that no flame comes in
contact with any log. With the
heatersettoHigh,checktosee if
flamecontactanylog.Ifso,repo-
sition logs according to the log
installation instructions in this
manual. Flames contacting logs
will create soot.
Screws for
Mounting Screen
WARNING:Failuretoposition
thepartsinaccordancewiththese
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
INSTALLING LOGS
Itisveryimportanttoinstallthelogsexactly
as instucted. Do not modify logs. Only use
logs supplied with heater.
1. Place one-piece log set on grate to fit
as illustrated in Figure 23. Make sure
middle section at bottom of log set is
seated into "U"-shaped cutout in cen-
ter of chassis (see Figure 24).
IMPORTANT: Make sure log does not
cover any burner ports.
2. Install fireplace screen by slipping
notches of fireplace screen over screws
on front of fireplace (see Figure 25).
CAUTION:Do not removethe
warning and instruction labels
attached to the heater base as-
sembly. These markings contain
important warranty information.
WARNING:Youmustoperate
this fireplace with the fireplace
screen in place. Make sure fire-
place screen is in place before
running fireplace.
Burner
Middle
Section at
Bottom of
Log Set

14
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
O
F
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P
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O
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O
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L
O
I
H
AUTO
ON
OFF
LIGHTING
INSTRUCTIONS
WARNING:Youmustoperate
this fireplace with the fireplace
screen in place. Make sure fire-
place screen is installed before
running fireplace.
NOTICE: During initial operation
of new fireplace, burning logs will
give off a paper-burning smell.
Open damper or window to vent
smell.Thiswillonlylastafewhours.
1. STOP! Read the safety information,
column 1.
2. Make sure manual shutoff valve is
fully open.
3. Set switch in OFF position.
A. Thisappliancehas a pilot whichmust
belightedby hand.When lighting the
pilot,followtheseinstructions exactly.
B. BEFORE LIGHTING smell all
aroundtheapplianceareaforgas. Be
suretosmellnext tothe floorbecause
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.
• Donot touchanyelectricswitch;do
not use any phone in your building.
• Immediatelycall yourgas supplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.
• If you cannot reach your gas sup-
plier, call the fire department.
C. Useonlyyourhandtopushinorturn
thegascontrolknob.Neveruse tools.
If the knob will not push in or turn
by 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 un-
der water.
WARNING: If you do not fol-
low these instructions exactly, a
fireorexplosionmayresultcaus-
ing property damage, personal
injury or loss of life.
FOR YOUR SAFETY
READ BEFORE
LIGHTING
OPERATING
FIREPLACE
WARNING:Burnerswillcome
on automatically within one
minutewhentheremoteselector
switch is in the ON position after
the pilot is lit.
Figure 26 - Control Knob and Ignitor Button Location (Shown as Supplied,
No Control Options)
Control Knob
Ignitor Button
Selector Switch in OFF Position
Flame Adjustment
Knob
4. Pressinandturncontrolknobclock-
wise to the OFF position.
5. Waitfive(5) minutestoclearoutany
gas. Then smell for gas, including
near the floor. If you smell gas,
STOP! Follow “B” in the safety in-
formation, column 1. If you don’t
smell gas, go to the next step.
6. Pressin andturncontrol knob coun-
terclockwise to the PILOT
position. Press in control knob for
five (5) seconds (see above).
Note: You may be running this
heater for the first time after hook-
ing up to gas supply. If so, the con-
trol knob may need to be pressed in
for 30 seconds or more. This will al-
low air to bleed from the gas system.
7. With control knob pressed in, press
and release ignitor button. This will
lightpilot.The pilotis attachedto the
front burner. If needed, keep press-
ing ignitor button until pilot lights.
Note: If pilot does not stay lit, con-
tact a qualified service person or gas
supplierforrepairs.Until repairsare
made,light pilotwithmatch.To light
pilot with match, see Manual Light-
ing Procedure on page 15.
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 pilotgoesout,repeat steps
4 through 8.
9. Slightly push in and turn control
knobcounterclockwise tothe
ON position.
10. Wait one minute and switch remote
selector switch to the ON position to
light burner.
11. Set flame adjustment knob to any
level between HI and LO.
CAUTION:Donottrytoadjust
heating levels by using the
manual shutoff valve.

15
104353
OWNER’S MANUAL
Continued
WARNING: Make sure the re-
mote selector switch is in the
OFF position when you are away
from home for long periods of
time. Heater will come on auto-
matically with remote selector
switch in the ON position.
OPERATING
FIREPLACE
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turncontrol knobclockwise
to the OFF position.
2. Setremoteselector switchin theOFF
position.
Shutting Off Burners Only (pilot
stays lit)
You may shut off the burners and keep
thepilotlit bydoingone ofthefollowing:
• Turn control knob clockwise
to the PILOT position.
• UseremotecontrolmanualOFFbutton.
• Set remote selector switch in the OFF
position.
MANUAL LIGHTING
PROCEDURE
1. Followsteps1through 6under Light-
ing Instructions, pages 14 and 15.
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 9, column 3, page 14.
Figure 27- Pilot
Ignitor
Electrode
Pilot Burner
1. Afterlighting,letpilot flameburnfor
aboutoneminute.Turncontrolknob
to ON position.Adjust flame adjust-
ment knob anywhere between HI
and LO. Slide the remote selector
switchtothe REMOTEposition(see
Figure27).Theburnerswillcomeon.
Youcannow turnthe burners onand
off with the hand-held remote con-
trol unit.
IMPORTANT: Do not leave the re-
moteselector switchintheREMOTE
positionwhenthe pilotisnot lit.This
will drain the battery.
GHRC Operation:
2. PresstheONbuttontoturn theburn-
ers on and the Off button to turn the
heater to pilot.
GHRCT Operation:
2. Select the MANUAL or AUTO but-
ton on the hand-held remote control
unit (GHRCT only, see Figure 28).
• In MANUAL mode, turn burners
on or off by pressing the ON or
OFF buttons on the hand-held re-
mote control unit. This is the only
function of GHRC.
OPTIONAL REMOTE
OPERATION
Thermostat Control Operation
(Optional GHRCT Only) The thermo-
statcontrolsetting onthe remotecontrol
unit can be set to any comfort level be-
tween HI and LO. The Burners will turn
on and off automatically to maintain the
comfort level you select. The ideal com-
fort setting will vary by household de-
pending upon the amount of space to be
heated, the output of the central heating
system, etc.
Forwallthermostatoperation,followin-
struction supplied with thermostat ac-
cessoryGWMT1. Forwallswitchopera-
tion follow instructions supplied with
GWMS2.
Note: Allremotecontrolaccessoriesmust
bepurchasedseparately(seeAccessories,
page 21). Follow instructions included
with the remote control.
NOTICE: You must light the pilot
before using the hand-held re-
mote control unit. See Lighting
Instructions on page 14.
O
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T
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L
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H
ON
OFF
REMOTE
TEMP
STATUS
HI
LO
MAN ON
AUTO OFF
Increases Room
Temperature
Decreases Room
Temperature
Turns Burners
On and Off
Shows Current
Operation Mode
Shows Temperature
Setting
Allows Burners to be
Turned On and Off
with the Hand-Held
Remote Unit.
The log heater will
automatically cycle
between pilot and the
heat setting that has
been selected.
Figure 29 - Thermostat Hand-Held Remote Control Unit Selections
Figure28-SettingtheRemoteSelectorSwitch,ControlKnob,and
Flame Adjustment Knob for Remote Operation
Remote Selector Switch in Remote
Position(Optional Remote Control)
Control Knob in
On Position
Flame Adjustment Knob

16
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
Figure 30 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 31 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 30 shows a correct pilot flame pat-
tern. Figure 31 shows an incorrect pilot
flame pattern. The incorrect pilot flame is
not properly heating the thermocouple.
When the thermocouple cools, the heater
will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 31
• turn heater off (see To Turn Off Gas to
Appliance, page 15).
• seeTroubleshooting,pages17 through19.
Pilot Burner
Thermocouple
INSPECTING
BURNERS
MAIN BURNER
Periodically inspect all burner flame holes
with the heater running. All slotted burner
flame holes should be open with yellow
flamepresent. Allroundburnerflameholes
should be open with a small blue flame
present. Some burner flame holes may be-
come blocked by debris or rust, with no
flame present. If so, turn off heater and let
cool. Either remove blockage or replace
burner. Blocked burner flame holes will
create soot.
OPERATING
FIREPLACE
Continued
Locatetheblowerswitchbyopeninglower
louver on fireplace. Blower switch is lo-
cated at lower left inside louver door.
This thermostat-controlled blower has
three settings: ON, OFF, and AUTO. In
the ON position, the blower will operate
constantly.IntheOFFposition,theblower
will not operate. In the AUTO position,
theblowerwillstartwhenthethermostat
sensesasufficientincreaseinfireboxtem-
perature.
Note: Your gas logs and thermostat
blower will not turn on and off at the
same time. The fireplace may run for
several minutes before the blower turns
on.Aftertheheatermodulatestothepilot
position, the blower will continue to run.
The blower will shut off after the firebox
temperature decreases.
Note: It is safe to operate fireplace with
blowerturnedoff.However,theblowerhelps
distribute heated air from the fireplace.
OPTIONAL BLOWER
OPERATION
• In AUTO mode (GHRCT only),
theroomtemperature iscontrolled
bythethermostat inthe hand-held
remotecontrolunit.To increasethe
room temperature, press the top
arrow of the TEMP button. To
lowerthe roomtemperature,press
the bottom arrow to the TEMP
button. At higher settings the
heater will run more.
IMPORTANT: The hand-held re-
motecontrolunitmust benearthe
heater. Do not keep the hand-held
remote control unit too close the
heater. The thermostat on the
hand-heldremote controlunit will
heat up too quickly and turn the
heater off.
3. UsetheSTATUSbutton onthe hand-
held remote control unit to see the
operation mode being used and the
temperature setting selected. A red
light will come on beside the opera-
tion mode being used when the sta-
tus button is pressed.
4. To turn the burners off when oper-
ating in the MANUAL mode, press
the OFF button. If operating in the
automode,pressthemanual button,
then press the OFF button. The pilot
will remain lit. IMPORTANT: To
turn the pilot off, manually turn the
control knob on the heater to the
OFF position or set remote selector
switch to OFF position.

17
104353
OWNER’S MANUAL
TROUBLESHOOTING
Note: Alltroubleshootingitemsarelistedin
order of operation.
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 manual 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
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
1. Control knob not fully pressed in
2. Control knobnot pressedin longenough
3. Manual 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 holdingpiezo ignitorto base
panel of log set. Nut is located behind
base panel.
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace piezo ignitor
7. Replace piezo ignitor
1. Turn on gas supply or open manual
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 gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 21) or replace 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 manual shut-off valve
4. A) Contact local propane gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 21) or replace ODS/
pilot assembly
5. Hand tighten until snug, then tighten
1/4 turn more
6. Replace thermocouple
7. Replace control valve
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition
ODS/pilot lights but flame goes out when
control knob is released
Continued

18
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
OBSERVED PROBLEM
Burner does not light after ODS/pilot is lit
Delayed ignition burner
Burner backfiring during combustion
Slightsmokeorodorduringinitialoperation
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, page 21) or replace burner orifice
2. Contact local propane gas company
3. Replace burner orifice
4. Reconnect leads (see Wiring Diagram,
page 20)
5. Replace battery in transmitter and
receiver
1. Contact local propane gas company
2. Clean burner (see Cleaning and Main-
tenance, page 21) or replace burner orifice
1. Clean burner (see Cleaning and
Maintenance,page 21)or replaceburner
orifice
2. Replace damaged burner
3. Replace gas control
1. Check burner for dirt and debris. If
found, clean burner (see Cleaning and
Maintenance, page 21)
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. Operateburneruntil airis removedfrom
line.Havegas linechecked bylocal pro-
pane gas company
3. Observe minimum installation clear-
ances (see pages 8 through 10)
4. Clean burner (see Cleaning and Mainte-
nance, page 21) or replace burner orifice
1. Turn heateroff whenusing furniturepol-
ish, wax, cleaners, or similar products.
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Burner orifice clogged
2. Inlet gas pressure is too low
3. Burner orifice diameter is too small
4. Thermopile leads disconnected or im-
properly connected
5. Burners will not come on in remote po-
sition
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 fromfurniture pol-
ish, wax, carpet cleaners, etc. turn into
white powder residue.

19
104353
OWNER’S MANUAL
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.
• Immediatelycallyourgassupplierfromaneighbor’sphone.Followthe
gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning
supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles,
etc.,createfumes.Thesefumesmaymixwithcombustionairandcreateodors.Theseodors
will disappear over time.
POSSIBLE CAUSE
1. Metal expanding while heating or con-
tracting while cooling
1. Fireplace burningvaporsfrom paint,hair
spray, glues, cleaners, chemicals, new
carpet,etc. (see IMPORTANT statement
above)
2. Gas leak. See Warning statement
above
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Gas leak. See Warning statement
above
2. Control valve defective
1. Foreign matter between control valve
and burner
2. Gas leak. See Warning statement
above
1. Improper log placement
2. Drafts or other air currents affecting
flame pattern
3. Air holes at burner inlet blocked
4. Burner flame holes blocked
OBSERVED PROBLEM
Fireplace produces a clicking/ticking noise
just after burners are lit or shut off
Fireplace produces unwanted odors
Fireplace shuts off in use (ODS operates)
Gas odor even when control knob is in OFF
position
Gas odor during combustion
Dark residue on logs or inside of fireplace
REMEDY
1. This is common with most fireplaces. If
noise is excessive, contact qualified ser-
vice person
1. Open window and ventilate room. Stop
using odor causing products while fire-
place is running
2. Locate and correct all leaks (see Check-
ing Gas Connections, page 12)
1. Open window and/or door for ventila-
tion
2. Contact local propane/LP gas company
3. Clean ODS/pilot (see Cleaning and
Maintenance, page 21)
1. Locate and correct all leaks (see Check-
ing Gas Connections, page 12)
2. Replace control valve
1. Take apart gas tubing and remove
foreign matter
2. Locate and correct all leaks (see Check-
ing Gas Connections, page 12)
1. Properly locatelogs (seeInstalling Logs,
page 13)
2. Eliminate source of drafts around heater
3. Clean out air holes at burner inlets. Pe-
riodically repeat as needed
4. Remove blockage or replace burner

20
104353
UNVENTED PROPANE/LP GAS FIREPLACE
DESA INTERNATIONAL
SPECIFICATIONS
VYGF33PR Remote Ready
Btu (Variable) 20,000/33,000
Type Gas Propane Only
Ignition Piezo
Pressure Manifold 8.0" W.C.
Inlet Gas Pressure (in. of water)
Maximum 14"
Minimum* 11"
Shipping Weight 122 lbs.
* For input adjustment
SERVICE HINTS
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
When gas quality is bad
• pilot will not stay lit
• burners will produce flames and soot
• heater will backfire when lit
Youmayfeelyourgaspressureistoolowor
gas quality is bad. If so, contact your local
propane/LP gas supplier.
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting.
Ifso,contactDESAInternational’sTechni-
cal Service Department at
1-800-DESA LOG (1-800-337-2564).
AUTO
OFF
ON
Thermopile
WIRING DIAGRAM
Note : For proper operation of optional ac-
cessories, the wires from the switch to the
controlmustbeconnectedexactlyasshown.