Desa Comfort Glow CGEFP33PR Quick start guide

UNVENTED (VENT-FREE) GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
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Shown with optional cabinet mantel,
hearth base, and trim accessories.
WARNING: If the information in this manual is not fol-
lowed exactly, a fire or explosion may result causing
property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fire department.
— Installationandservicemustbeperformedbyaquali-
fied installer, service agency, or the gas supplier.
WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manual for correct installation and
operationalprocedures. Forassis-
tanceoradditionalinformationcon-
sult a qualified installer, service
agency, or the gas supplier.
WARNING:Thisisanunventedgas-
fired heater. It uses air (oxygen)
from the room in which it is in-
stalled. Provisions for adequate
combustionandventilationairmust
be provided. Refer to Air for Com-
bustion and Ventilation section on
page 5 of this manual.
CGEFP33PR, CGEFP33NR, EFP33PR, EFP33NR,
VTGF33NR, and VTGF33PR
Gas Fireplace with Total Control System (TCS)
This appliance may be installed in an aftermarket,* permanently located, manufactured
(mobile) home, where not prohibited by local codes.
Thisapplianceisonlyforuse with the type ofgasindicatedonthe rating plate. This appliance
is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Shown with optional hearth
base accessory.
TM

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TABLE OF CONTENTS
SAFETY INFORMATION
SAFETY INFORMATION
DANGER: Carbon monoxide poisoning may lead
to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoningresemblethe flu,with headaches, dizziness,or nausea.If
you have these signs, the fireplace may not be working properly.
Get fresh air at once! Have fireplace serviced. Some people are
more affected by carbon monoxide than others. These include
pregnantwomen,peoplewithheartorlungdiseaseoranemia,those
under the influence of alcohol, and those at high altitudes.
Natural and Propane/LP Gas: Natural and Propane/LP gases are
odorless. An odor-making agent is added to these gases. 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 fireplace.
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completelybeforetryingtoassemble,operate,orservice
this fireplace. Improper use of this fireplace can cause
serious injury or death from burns, fire, explosion, elec-
trical shock, and carbon monoxide poisoning.
WARNING: Any change to this heater or its
controls can be dangerous.
WARNING: 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
cause sooting.
WARNING: Do not use a blower insert, heat
exchanger insert, or other accessory not approved
for use with this fireplace.
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Do not place clothing or other flammable material on
orneartheappliance. Never placeanyobjectsonthe
heater.
Fireplace front and screen become very hot when
running fireplace. Keep children and adults away
fromhotsurfaces toavoidburnsor clothingignition.
Fireplace will remain hot for a time after shutdown.
Allow surfaces to cool before touching.
Carefully supervise young children when they are in
the room with fireplace. When using the hand-held
remote accessory, keep selector switch in the OFF
position to prevent children from turning on burners
with remote.
You must operate this fireplace with the fireplace
screenandhoodinplace.Makesurefireplacescreen
and hood are in place before running fireplace.
Keeptheapplianceareaclearand free from combus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 4
UNPACKING ............................................................................... 4
PRODUCT FEATURES .............................................................. 4
AIR FOR COMBUSTION AND VENTILATION ........................... 5
INSTALLATION ........................................................................... 7
OPERATING FIREPLACE ........................................................ 24
INSPECTING BURNERS.......................................................... 27
CLEANING AND MAINTENANCE ............................................ 28
TROUBLESHOOTING .............................................................. 29
SPECIFICATIONS .................................................................... 32
SERVICE HINTS....................................................................... 32
TECHNICAL SERVICE ............................................................. 32
REPLACEMENT PARTS .......................................................... 32
WIRING DIAGRAM ................................................................... 33
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST....... 34
ACCESSORIES ........................................................................ 42
TEMPLATES ............................................................................. 45
OWNER’S REGISTRATION FORM.......................................... 47
WARRANTY INFORMATION...................................... Back Cover

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3
SAFETY INFORMATION
PRODUCT IDENTIFICATION
1. This appliance is only for use with the type of gas indicated on
the rating plate. This appliance is not convertible for use with
other gases.
2. Do not place propane/LP supply tank(s) inside any structure.
Locate propane/LP supply tank(s) outdoors.
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
•
do not touch any electrical switch; do not use any phone in
your building
• immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions
• if you cannot reach your gas supplier, call the fire department
4. This fireplace shall not be installed in a bedroom or bathroom.
5. Do not use this fireplace as a wood-burning fireplace. Use only
the logs provided with the fireplace.
6. Do not add extra logs or ornaments such as pine cones, ver-
miculite,orrock wool.Usingthese addeditems can causesoot-
ing. Do not add lava rock around base. Rock and debris could
fall into the control area of fireplace.
7. To preventthe creationof soot,follow the instructionsin Clean-
ing and Maintenance, page 28.
8. Before using furniture polish, wax, carpet cleaner, or similar
products, turn heater off. If heated, the vapors from these prod-
ucts may create a white powder residue within burner box or
on adjacent walls or furniture.
9. This fireplace needs fresh air ventilation to run properly. This
fireplace has an Oxygen Depletion Sensing (ODS) safety
shutoffsystem.The ODSshuts downthe fireplaceif not enough
fresh air is available. See Air for Combustion and Ventilation,
pages 5 through 7. If fireplace keeps shutting off, see Trouble-
shooting, pages 29 through 31.
10. Do not run fireplace
• where flammable liquids or vapors are used or stored
• under dusty conditions
11. Do not use this fireplace to cook food or burn paper or other
objects.
12. Do not use fireplace if any part has been exposed to or under
water. Immediately call a qualified service technician to in-
spect the fireplace and to replace any part of the control sys-
tem and any gas control which has been under water.
13. Do not operate fireplace if any log is broken. Do not operate
fireplace if a log is chipped (dime-sized or larger).
14. Turn fireplace off and let cool before servicing. Only a quali-
fied service person should service and repair fireplace.
15. Operating fireplace above elevations of 4,500 feet could cause
pilot outage.
16. To prevent performance problems with propane/LP units, do
not use propane/LP fuel tanks of less than 100 lb. capacity.
17. Provide adequate clearances around air openings.
SAFETY INFORMATION
Continued
PRODUCT IDENTIFICATION
Figure 2 - Fireplace (EFP33PR Shown)
Top Louver
Assembly
Firebox
Hood
Bottom Louver
Assembly
Screen
Assembly
Top Outer
Casing
Firebox Support
Blower
Assembly
(Optional)
Log Set
Wall Switch/Plate
Piezo
Ignitor
Remote
Control
Manual
Override
Handle
Manual Ignition
Bypass Switch
Figure 1 - Fireplace Floor Assembly (EFP33PR Shown)

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LOCAL CODES
Install and use fireplace with care. Follow all local codes. In the
absenceoflocalcodes,usethelatesteditionofTheNationalFuelGas
Code, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
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. Re-
move 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 assem-
bly, and fireplace.
4. Remove fireplace hood from carton insert.
5. Check allitems forany shipping damage.If damaged,promptly
inform dealer where you bought fireplace.
CAUTION: Do not remove the metal data plates
attachedtotheheaterbaseassembly.Thedataplates
contain important warranty and safety information.
PRODUCT FEATURES
OPERATION
This vent-free fireplace is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a chimney. Heat is
generated by both realistic flames and glowing embers. When used
without the optional blower, the fireplace requires no electricity
making it ideal for emergency backup heat.
SAFETY DEVICE
Thisfireplace hasa pilotwith anOxygenDepletionSensing(ODS)
safety shutoff system. The ODS/pilot is a required feature for vent-
free room heaters. The ODS system shuts off the fireplace if there
is not enough fresh air.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system requires no matches,
batteries, or other sources to light fireplace.
WIRELESS REMOTE CONTROL
This fireplace features an infrared wireless remote control. This
controlsystemcanbeusedtoautomaticallylightthepilotandadjust
the burner flame height at the push of a button.
WIRED WALL-MOUNTED REMOTE CONTROL
Thisfireplacefeatures atwo-button wallswitch and wallplate with
glowingLED’s.Thewallswitchperformsthesamefunctionsasthe
wireless hand-held remote control with the added feature of LED’s
for visual feedback of operation and status.
OPTIONAL BLOWER ASSEMBLY
ACCESSORY
This fireplace accepts an optional blower assembly (not included).
The GA3650T/GA3700T Series blower operates thermostatically
and features a variable speed control. The GA3700/GA3750 Series
operates manually and also features a variable speed control. The
blowercirculatesheated airfromthe fireplaceintotheroom. Useof
blower is optional. See Accessories, pages 42 & 43.
LOCAL CODES
UNPACKING
PRODUCT FEATURES

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5
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New
materials,increased insulation,and newconstructionmethods help
reduce heat loss in homes. Home owners weather strip and caulk
aroundwindows anddoors tokeepthe coldair outand thewarm 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.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation
classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 5 through 7 will help you classify your
space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough
fresh air for combustion and ventilation. However, in buildings of
unusually tight construction, you must provide additional fresh air.
WARNING: This heater shall not be installed in a
confined space or unusually tight construction un-
less provisions are provided for adequate combus-
tion and ventilation air. Read the following instruc-
tionstoinsureproperfreshairforthisandotherfuel-
burning appliances in your home.
Unusually tight construction is defined as construction
where:
a. walls and ceilings exposedtotheoutsideatmosphere
have a continuous water vapor retarder with a rating
of one perm (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,between wall-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 7 .
If your home does not meet all of the three criteria above,
proceed to Determining Fresh-Air Flow for Fireplace Lo-
cation on page 6.
Confined Space and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a
confined space as a space whose volume is less than 50 cubic feet
per 1,000 Btu per hour (4.8 m3per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as
aspacewhosevolumeisnotlessthan50cubicfeetper1,000Btuper
hour (4.8 m3per kw) of the aggregate input rating of all appliances
installed in that space. Rooms communicating directly with the
space in which the appliances are installed*, through openings not
furnishedwith doors,areconsidered apartof theunconfinedspace.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation

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AIR FOR COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR
HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Usethisworksheettodetermineifyouhaveaconfined or unconfined space.
Space:Includestheroominwhichyouwillinstallheaterplusanyadjoining
rooms with doorless passageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = ___________ cu. ft. (volume of space)
Example: Space size 20 ft. (length) x 18 ft. (width) x 8 ft. (ceiling
height) = 3168 cu. ft. (volume of space)
Ifadditionalventilationtoadjoiningroomissuppliedwith grills or open-
ings, add the volume of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine the maximum Btu/Hr
the space can support.
__________ (volume of space) x 20 = (Maximum Btu/Hr the space
can support)
Example: 3168 cu. ft. (volume of space) x 20 = 63,360 (maximum
Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater _____________ Btu/Hr
Gas water heater* _____________ Btu/Hr
Gas furnace _____________ Btu/Hr
Vented gas heater _____________ Btu/Hr
Gas fireplace logs _____________ Btu/Hr
Other gas appliances* + _____________ Btu/Hr
Total = _____________ Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws com-
bustion air from the outdoors and vents to the outdoors.
Example:
Gas water heater _____________ Btu/Hr
Vent-free heater + _____________ Btu/Hr
Total = _____________ Btu/Hr
4. Compare the maximum Btu/Hr the space can support with the actual
amount of Btu/Hr used.
__________________ Btu/Hr (maximum the space can support)
__________________ Btu/Hr (actual amount of Btu/Hr used)
Example: 63,360 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:
WARNING: If the area in which the heater may be
operated is smaller than that defined as an uncon-
fined space or if the building is of unusually tight
construction,provideadequatecombustionandven-
tilation air by one of the methods described in the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 Sec-
tion 5.3 or applicable local codes .
A. Rework worksheet, adding the space of an adjoining room. If the
extra space provides an unconfined space, remove door to adjoining
roomor add ventilation grillsbetweenrooms.SeeVentilationAir From
Inside Building.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors, page 7.
C. Installa lower Btu/Hrheater, if lowerBtu/Hrsize 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.
40,000
33,000
73,000
AIR FOR COMBUSTION AND VENTILATION
Determining Fresh-Air Flow For Heater Location
Ventilation Air
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space.
When ventilating to an adjoining unconfined space, you must
provide two permanent openings: one within 12" of the ceiling and
one within 12" of the floor on the wall connecting the two spaces
(see options 1 and 2, Figure 3). You can also remove door into
adjoining room (see option 3, Figure 3). 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.
Figure3-VentilationAirfromInsideBuilding(EFP33PRShown)
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"

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AIR FOR COMBUSTION AND VENTILATION
Ventilation Air (Cont.)
INSTALLATION
AIR FOR COMBUSTION AND
VENTILATION
Continued
Figure 4 - Ventilation Air from Outdoors (EFP33PR Shown)
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Ventilation Air From Outdoors
Provideextrafreshairby usingventilationgrillsorducts.Youmust
provide two permanent openings: one within 12" of the ceiling and
one within 12" of the floor. Connect these items directly to the
outdoorsorspacesopento theoutdoors.Thesespacesincludeattics
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: Donotprovideopeningsforinletoroutletairintoattic
if attic has a thermostat-controlled power vent. Heated air entering the
attic will activate the power vent.
INSTALLATION
CAUTION: This fireplace creates warm air cur-
rents.Thesecurrentsmoveheattowallsurfacesnext
to fireplace. Installing fireplace next to vinyl or cloth
wall coverings or operating fireplace where impuri-
ties (such as, but not limited to, tobacco smoke,
aromatic candles, cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may discolor walls.
WARNING: A qualified service person must in-
stall fireplace. Follow all local codes.
WARNING: Never install the fireplace
•in a bedroom or bathroom
•in a recreational vehicle
•where curtains, furniture, clothing, or other flam-
mable objects are less than 42 inches from the
front, top, or sides of the fireplace
•in high traffic areas
•in windy or drafty areas
NOTICE: This heater is intended for use as supple-
mental heat. Use this heater along with your primary
heating system. Do not install this heater as your
primary heat source. If you have a central heating
system, you may run system’s circulating blower
while using heater. This will help circulate the heat
throughoutthehouse.Intheeventofapoweroutage,
you can use this heater as your primary heat source.
Note: Your fireplace is designed to be used in zero clearance
installations.Wallorframingmaterialcanbeplaceddirectlyagainst
any exterior surface on the rear, sides, or top of your fireplace,
except where standoff spacers are integrally attached. If standoff
spacers are attached to your fireplace, these spacers can be placed
directly against wall or framing materials.
Use the dimensions shown for rough openings to create the easiest
installation (see Built-In Fireplace Installation, pages 19 and 20).
IMPORTANT: Vent-freeheaters addmoisture tothe air. Although
this is beneficial, installing fireplace in rooms without enough
ventilation air may cause mildew to form from too much moisture.
See Air for Combustion and Ventilation, pages 5 through 7.
IMPORTANT: Make sure the fireplace is level. If fireplace is not
level, log set will not work properly.

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CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for your unit. If
your gas supply is not correct, do not install fireplace. Call dealer
where you bought fireplace for proper type fireplace.
ELECTRICAL HOOKUP
This fireplace normally operates under 120 VAC/60 Hz line volt-
age. The electrical cord supplied with your fireplace is five feet in
length. You must locate fireplace within reach of a 120 volt
groundedelectricaloutlet.Ifnot,youmustinstallanelectricaloutlet
within reach of the fireplace power cord. The GA3555 outlet
accessory may be used for built-in applications.
INSTALLATION CLEARANCES
WARNING: Maintain the minimum clearances. If
you can, provide greater clearances from floor, ceil-
ing, and adjoining wall.
Carefully follow the instructions below. This will ensure safe
installation.
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
A. Clearances from the side of the fireplace cabinet to any com-
bustible material and wall should follow diagram in Figure 5.
Example: The face of a mantel, bookshelf, etc. is made of
combustible material and protrudes 3 1/2" from the wall. This
combustible material must be 4" from the side of the fireplace
cabinet (see Figure 5).
B. Clearances from the top of the fireplace opening to the ceiling
should not be less than 42 inches.
Figure 5 - Minimum Clearance for Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
INSTALLATION
Continued
INSTALLATION
Check Gas Type
Electrical Hookup
Installation Clearances
Installation Sequence
Removing Fireplace Screen And Floor Assembly
INSTALLATION SEQUENCE
After unpacking fireplace (see Unpacking,page 4),we suggest that
you install your fireplace system in the following sequence:
1. Removal of fireplace floor assembly (required)
2. Electrical connections for power cord (required)
3. Relocating wall switch (optional)
4. Installing blower accessory (optional)
5. Connecting fireplace to gas supply (required)
6. Checking gas connections (required)
7. Firebox installation, conventional or built-in (required)
8. Installing brass perimeter trim (optional)
9. Installing fireplace hood (required)
10. Installing logs (required)
11. Installing fireplace screen (required)
Use the following instructions to complete each step.
REMOVING FIREPLACE SCREEN AND
FLOOR ASSEMBLY
NOTICE: Shutoff gas supply and disconnect heater
from gas supply if installing blower into previously
installedfireplace.Contactaqualifiedserviceperson
to do this.
1. Remove fireplace screen. Remove two screws that hold fire-
place screen in place for shipping. These screws are located
near top of screen. Discard screws. Lift fireplace screen up
and pull out to remove.
2. If logs are installed, carefully remove the logs and set aside,
noting the properly mounted location of each.
3. Remove screws that attach fireplace floor assembly to fire-
place. Open lower louver door. Carefully lift up fireplace floor
assembly and remove from fireplace, taking care to pull flex-
ible gas line through the access holes (see Figure 6, page 9).
Note: Be careful of all wires on underside of log base.
CAUTION:Donotpickupfireplacefloorassembly
byburners.Thiscoulddamageburners.Onlyhandle
base by grates.

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9
Figure 6 - Removing Fireplace Floor Assembly (VTGF33N/PR
Shown)
Screws Fireplace Floor
Assembly
Flexible Gas Line
INSTALLATION
Continued
ELECTRICAL CONNECTIONS FOR POWER
CORD
This fireplace operates on 120 VAC, 60 Hz power. An electrical
power cord is supplied with this unit.
For Mantel Installation
1. Determine from which side of the fireplace the power cord will
exit. Locate the 1.5" diameter hole near the center of floor sup-
port bracket on appropriate side of lower cavity (see Figure 7).
2. Locate power cord. Remove wire tie or tape holding plug end
of power cord.
3. Power cord has 2 plastic hole bushings threaded onto it. Route
cord's 3-prong plug through the 1.5" diameter hole in appro-
priate floor support bracket.
4. Push first plastic bushing completely through hole. Squeeze
bushing as needed to do this.
5. Install the second plastic bushing into the hole in the floor sup-
port bracket by snapping into place.
6. Route the 3-prong plug through the 1.5" hole in fireplace
outer casing.
7. Installthefirstplasticbushingintothisholebysnappingintoplace.
8. After you have connected to gas supply and checked your gas
connections (see pages 15 through 18), plug power cord into
anyconvenient 3-pronggrounded wallreceptacle nearfireplace.
For Recessed Installation
If an outlet is not installed in fireplace, install model GA3555 -
Outlet Kit with Cover. This kit will supply a convenient 3-prong
grounded electrical outlet for power. Refer to installation manual
provided with this optional accessory for instructions on wiring.
Note: A qualified installer must make all electrical connections.
Figure 7 - Routing Power Cord
Power Cord
Bushings
Hole in Floor
Support Bracket Hole in Outer
Casing
RELOCATING WALL SWITCH
Note: The decorative wall switch plate supplied is white. The wall
switch plate may be painted to match your decor.
The push-button switch and decorative wall plate assembly sup-
plied with your fireplace is pre-mounted at the factory in the lower
cavityofthefireplace.Youmayrelocatethisswitch/plateassembly
to a more convenient location such as the side of your mantel or
directly onto the wall near the fireplace. To mount the wall switch/
plate assembly, you must first cut openings in the mantel or wall
where the switch will be located.
Note: If you choose to relocate the wall switch, do so before final
installation into a mantel or recessing into a wall. If you are
installing an optional blower accessory, install it at the same time
you relocate the wall switch.
For Recessed Installation
If fireplace is to be recessed into a wall (see Built-In Fireplace
Installation, pages 19 and 20), we recommend mounting wall
switch to left side of fireplace. The wall switch should be mounted
approximately 12" from left edge of fireplace, and less than 60"
fromthe floor. IMPORTANT: Do notlocatewall switchdirectly in
front of wall stud - there must be room behind wall board for wires
from switch. If you choose to locate wall switch to right side of
fireplace, the length of the cord restricts you to less than 6" from
right edge of fireplace and less than 48" from floor.
CAUTION:Thewallswitchmustneverbemounted
directly above the fireplace where heat may damage
it. If you relocate wall switch from lower fireplace
cavity, it must be mounted either on side wall of
mantel or on wall to side of fireplace.
INSTALLATION
Removing Fireplace Screen And Floor Assembly (Cont.)
Electrical Connections for Power Cord
Relocating Wall Switch

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INSTALLATION
Relocating Wall Switch (Cont.)
CAUTION:Becarefulofgaslinesandwiringwhen
moving floor.
For Mantel Installation
If fireplace is to be installed into a mantel, (see Conventional
Fireplace Installation, pages 18 and 19) the wall switch may be
mounted on either side of the mantel, facing to the side. Do not
locate wall switch anywhere on the front face of the mantel.
1. Determine the new location for the wall switch. The wires at-
tached to switch are six feet long.
2. Remove 2 screws securing plastic wall plate to bracket in fire-
place lower cavity. Save screws.
3. Remove wire tie holding coiled wire attached to wall switch
(see Figure 8).
4. Remove wall switch/plate assembly from bracket.
5. Carefully pass wall plate and cord through large elongated hole
in rear of either left or right floor support bracket, depending on
desiredlocation of switch.Pass wallplate andcordthrough 1.5"
diameter hole in side of fireplace outer casing (see Figure 9).
6. Pull wallplate andcord fromfireplacemaking surewall switch/
plate assembly will reach desired mounting location without
straining cord assembly.
If you are mounting wall switch to a wall, continue reading. If you
aremountingyourwallswitchtothesideofthemantel,seepage11.
INSTALLATION
Continued
Figure 8 - Relocating Switch and Wall Plate
CAUTION: Do not apply excessive pull on cord.
Figure 9 - Routing Wall Switch/Plate Through Fireplace for
Relocation
Switch with
Wall Plate
Wire Tie
Burner
Outlet
Tube
Gas Control Valve
Firebox
Bottom
Wall Switch/Plate Assy
Hole in Outer
Casing Hole in
Floor
Support
Bracket
Mounting Wall Switch to Wall for Recessed Fireplace
7. Create three openings on wall according to Template 1, page
45. This is best done by making a pattern to work with on your
wall. Carefully cut page 45/46 from manual and tape paper
template vertically onto wall at preferred location. Pierce the
paper at the centers of the 2 holes with a nail or sharp pencil,
leaving a mark on the wall. Do the same at centers of the four
circles near the corners of the rectangle.
8. Remove paper template from wall.
9. Drill 3/8" holes at each mark.
10. Using a straight edge and pencil, connect the outer edges of
the 4 holes for the rectangle (see Figure 10). This will give you
cutting lines for the rectangle you will cut in the wall.
11. Using a keyhole saw, hack saw blade, drill, file, or other suit-
able tool, carefully cut out the rectangular opening. Note: The
corners of the rectangle may be round. IMPORTANT: Do not
exceed the size of the rectangle on template.
12. From inside the recessed opening for the fireplace, carefully
pass switch/plate assembly through the rectangular opening to
the outside of the wall.
13. Using wall anchors supplied in hardware package, fold wall
anchor as shown in Figure 11.
14. Insertwallanchor,wingsfirst, intohole.Tap anchorflushto wall.
15. For thin walls (1/2" or less), insert red key into wall anchor.
Push red key to “pop” open anchor wings. See Figure 12.
IMPORTANT: Do not hammer key! For thick walls (over 1/2"
thick), do not pop open wings.
Figure 11 - Folding Anchor Figure12-PoppingOpenAnchor
Wings for Thin Walls
Figure 10 - Using Template for Wall Switch Installation
4
3
/ 4 "
3
3
/ 4 "
3/8"
3/16"
3/4"
3/8" Diameter
2 Holes
Template
from This
Manual
Cutting
Lines
Make Marks
at Centers
of Holes
Tape

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11
INSTALLATION
Relocating Wall Switch (Cont.)
Installing Variable Speed Blower Accessory
INSTALLATION
Continued
16. Position switch/plate assembly vertically over wall openings
with decal lettering upright (see Figure 13).
17. Insert mounting screws, removed in step 2 of Relocating Wall
Switch on pages 9 and 10, through holes in wall plate and into
wall anchors.
18. Tighten screws until wall plate is firmly attached to wall. Do
not overtighten.
Mounting Wall Switch to Side of Mantel
7. Create three openings in the mantel wall according to Tem-
plate 2, page 45. This is best done by making a pattern to work
with on the mantel. Carefully cut page 45/46 from manual and
tape paper template vertically onto mantel wall at preferred
location. Pierce the paper at the centers of the 2 holes with a
nail or sharp pencil, leaving a mark on the wall. Do the same
at centers of the four circles near the corners of the rectangle.
8. Remove paper template from mantel wall.
9. Drill 1/8" pilot holes at each mark for top and bottom screw
holes. Drill 3/8" holes at each mark for centers of four circles
near corners of rectangle.
10. Using a straight edge and pencil, connect the outer edges of the 4
holes for the rectangle (see Figure 10, page 10). This will give
you cutting lines for the rectangle you will cut in the mantel wall.
11. Using a keyhole saw, hack saw blade, drill, file, or other suit-
able tool, carefully cut out the rectangular opening. Note: The
corners of the rectangle may be round. IMPORTANT: Do not
exceed the size of the rectangle on template.
12. Carefully passswitch/plateassembly throughrectangular open-
ing from inside mantel (see Figure 13).
13. Position switch/plate assembly vertically over opening with
decal lettering upright. Make sure wires freely pass through
wall without binding.Align holes in wall plate with 1/8" pilot
holes in mantel wall.
14. Drive mounting screws, removed in step 2 of Relocating Wall
Switch on pages 9 and 10, through wall plate holes and into
pilot holes in mantel wall.
15. Tighten screws until wall plate is firmly attached to mantel.
Do not overtighten.
Figure 13 - Securing Wall Switch
Screws
Wall Plate/
Switch
Opening in
Wall or
Mantel Wall
1. If fireplace screen and floor are still installed, see Removing
Fireplace Screen and Floor Assembly, page 8.
2. Attach the power cord to the blower motor by firmly pushing
the two female terminals at the end of the power cord onto the
two spade terminals on the blower motor.
3. Attach green ground wire from power cord to blower housing
using screw provided (see Figure 14). Tighten screws securely.
4. Place the blower against lower rear wall of firebox outer wrap-
per with the exhaust port directed upward. Align the holes in
top mounting tabs of blower with holes in wall of wrapper
(see Figure 14). Using 2 screws provided, mount blower and
tighten screws securely.
INSTALLING VARIABLE SPEED BLOWER
ACCESSORY
NOTICE: Shut off gas supply and disconnect heater
from gas supply if installing blower into previously
installedfireplace.Contactaqualifiedserviceperson
to do this.
Figure14 -Mounting Blowerto Firebox(VTGF33NR/VTGF33PR
Shown)
Lower Rear
Wall of
Firebox
Blower
Screws
Top
Mounting
Tab
Exhaust
Port
Screw
Green Ground Wire

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Figure 15 - Attaching Speed Control to Firebox (VTGF33NR/
VTGF33PR Shown)
Screws Speed
Control
Control Knob
Left Floor
Support
Bracket
Control
Shaft
5. Be certain that all wire terminals are securely attached to ter-
minals on blower motor and that the screw retaining the green
ground wire is tight.
6. Place control knob provided on plastic control shaft of speed
control.
7. Mount the speed control on the front leg of the left floor sup-
port bracket using 2 screws provided (see Figure 15).
8. Plug in blower power cord.
a. Ifyourfireplacesystemisinstalled as afreestandingunit
with an accessory mantel, determine whether the power
cord will exit the left side or the right side of the firebox.
Install 1 plastic bushing provided into the 1.5" hole in the
floor support bracket on the exit side (see Figure 16). Install
the second plastic bushing provided into the 1.5" hole in the
outer casing through which the power cord will exit. Route
powercordthrough bothplastic bushings andplug the power
cord into a properly grounded 3-prong wall receptacle near
the firebox.
b.If your fireplace system installation is recessed and if an
outlet is not installed in your fireplace, you must install
the GA3555 Outlet kit with cover in your fireplace which
will supply a convenient 3-prong grounded electrical outlet
for your blower. Refer to the installation manual provided
with the model GA3555 accessory for instructions on wir-
ing the duplex outlet.
Note: Aqualifiedinstallermust makeallelectricalconnections.
9. Check to make sure that all electrical cords are completely
clear of the blower wheel and that there are no other foreign
objects in blower wheel. Turn blower on and check for opera-
tion. Turn blower off by rotating knob fully counterclockwise
before continuing.
INSTALLATION
Installing Variable Speed Blower Accessory (Cont.)
INSTALLATION
Continued
CAUTION: Never touch the blower wheel while in
operation.
WARNING: Failure to position the parts in accor-
dance with supplied diagrams or failure to use only
parts specifically approved with this heater may re-
sult in damage or personal injury.
WARNING: A qualified service person must con-
nect fireplace to gas supply. Follow all local codes.
Plastic
Bushing
Right Floor
Support Bracket
Figure 16 - Installing Plastic Bushing for Power Cord (VTGF33NR/
VTGF33PR Shown)
10. Peel off backing paper and stick supplied wiring diagram de-
cal near center of firebox bottom (Figure 17, page 13).
11. If gas connections have been made and checked, replace fire-
place floor assembly. Feed flexible gas supply line into fire-
place base area while replacing fireplace floor assembly. Make
sure the entire flexible gas line is in fireplace base area.
IMPORTANT: Do not pick up fireplace floor assembly by
burners. This could damage burners. Only handle base by
grates. Note: Be careful of all wires and components on un-
derside of floor assembly.
12. Reattach fireplace floor assembly with screws removed in step
3 of Removing Fireplace Screen and Floor Assembly, page 8.
Note: Discard the remaining hardware items.After assembly,
make sure all wires are completely clear of blower wheel.
13. Install logs (see Installing Logs, pages 21 through 23) and fire-
place screen (see Installing Screen, page 24).

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13
INSTALLATION
Installing Variable Speed Blower Accessory (Cont.)
Installing Thermostatic Blower Accessory
INSTALLATION
Continued
Operating the Blower
Light your gas appliance with the blower off. After about 15
minutes, turn the blower on to deliver heated air at the top louvers.
Theblowerfeaturesavariablecontrolwhichallowsyoutoselectthe
speed you desire. Note: Periodically check the louvers of the fire-
box and remove any dust, dirt, or other obstructions.
Variable
FanSwitch
White
WhiteBlack
Green
On
110/115
V.A.C.
Blower
Motor
Black
Black
Black
Off
Wiring
Diagram
101584-05
120 Vac. 60 Hz. . 78Amps
DESA International, Bowling Green, KY
WARNING:Never attempt to service heater while it is plugged in, oper-
ating, or hot.Burns and electrical shock could result. Only a qualified ser-
vice person should service or repair heater.
If any of the original wire as supplied with the appliance must be replaced, it must be
replaced with 105°C wire or it’s equivalent.
WARNING: Label all wires prior to disconnection when servicing con-
trols.Wiring errorscan causeimproperand dangerous operation.Verifyproper
operation after servicing.
Variable
Fan Switch
WhiteWhite
Black
Green
On
110/115
V.A.C.
Blower
Motor
Black
Black Black
Off
Figure 17 - Location of Wiring Diagram Decal 3" from Blower
(VTGF33NR/VTGF33PR Shown)
1. If fireplace screen and floor are still installed, see Removing
Fireplace Screen and Floor Assembly, page 8.
NOTICE: Shut off gas supply and disconnect heater
from gas supply if installing blower in previously
installedfireplace.Contactaqualifiedserviceperson
to do this.
INSTALLING THERMOSTATIC BLOWER
ACCESSORY
2. Using screw provided, attach green ground wire from speed
control cord to blower housing. Tighten screw securely (see
Figure 18).
3. Place the blower against lower rear wall of firebox outer wrap-
per with the exhaust port directed upward. Align the holes in
top mounting tabs of blower with holes in wall of wrapper
(see Figure 19, page 14). Using two #8 screws provided, mount
blower and tighten screws firmly.
4. Remove the three screws (do not discard) and cover plate from
center of firebox wrapper rear wall. Discard this cover plate
(see Figure 18).
5. Mount the supplied thermostatic switch and cover assembly
into firebox wrapper wall. Do this by feeding terminal ends of
wire harness into the hole. Allow wires to fall to bottom of
firebox cavity (see Figure 18).
6. Using three screws from step 7, attach switch and cover as-
sembly to firebox wrapper rear wall. Tighten screws firmly
(see Figure 18).
7. Firmly attach red wire from the thermostatic switch and cover
assembly to either of the terminals on the blower motor (see
Figure 18).
8. Firmly attach black wire from speed control cord to blue wire
from thermostatic switch and cover assembly (see Figure 18).
9. Firmly attach white wire from speed control cord to remaining
terminal on blower motor (see Figure 18).
Figure 18 - Installing Switch and Cover Assembly, and Speed
Control (VTGF33NR/VTGF33PR Shown)
Thermostatic Switch
and Cover Assembly
Red
Wire
Blue
Wire
Black
Wire
Green
Wire
White
Wire
Speed
Control

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INSTALLATION
Installing Thermostatic Blower Accessory (Cont.)
INSTALLATION
Continued
10. Place control knob provided on plastic control shaft of speed
control (see Figure 20).
11. Mount the speed control onto the front leg of the left floor
support bracket using 2 screws provided (see Figure 20).
Blower
#8 Screws
Lower
Rear Wall
of Firebox
Exhaust
Port Top
Mounting
Tab
Control Knob
Screws
Speed
Control
Floor
Support
Bracket
Figure 20 - Attaching Speed Control (VTGF33NR/VTGF33PR
Shown)
13. Check to make sure that the power cord and all wires are com-
pletely clear of the blower wheel and that there are no other
foreign objects in blower wheel.
12. Plug in blower power cord.
a. If your firebox is installed as a freestanding unit with an
accessory mantel, determine whether the power cord will
exit the left side or the right side of the firebox. Install one
plastic bushing provided into the 1 1/2" hole in the floor sup-
port on the exit side. Install the second bushing provided into
the 1 1/2" hole in the outer casing through which the power
cord will exit (see Figures 21 and 22). Route power cord
through plastic bushings and plug the power cord into a prop-
erly grounded three-prong wall receptacle near the firebox.
b.If your fireplace system installation is recessed and if an
outlet is not installed in your fireplace, you must install
the GA3555 Outlet kit with cover in your fireplace which
will supply a convenient 3-prong grounded electrical outlet
for your blower. Refer to the installation manual provided
with the model GA3555 accessory for instructions on wir-
ing the duplex outlet.
Note: Aqualifiedinstallermust makeallelectricalconnections.
WARNING: Failure to connect all wires properly
as indicated may cause electrical short circuit or
personal injury. A qualified electrician should check
that all connections are made properly.
Figure21-InstallingPlasticBushingforPowerCord(RightSide
Exit Shown) (VTGF33NR/VTGF33PR Shown)
Right Floor
Support Bracket Plastic
Bushing
Figure 22 - Installing Bushings (Left Side Exit shown)
(VTGF33NR/VTGF33PR Shown)
Bushing Location
for Recessed
Installation
Bushing
Location for
Freestanding
Installation
Plastic
Bushing
14. Peel off backing paper and stick supplied wiring diagram de-
cal near center of firebox bottom (see Figure 23, page 15).
CAUTION: Never touch the blower wheel while in
operation.
Figure19 -Mounting Blowerto Firebox(VTGF33NR/VTGF33PR
Shown)

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15
INSTALLATION
Installing Thermostatic Blower Accessory (Cont.)
Installing Gas Piping to Fireplace Location
INSTALLATION
Continued
Variable
FanSwitch
White
White Black
Green
On
110/115
V.A.C.
Blower
Motor
Black
Black
Black
Off
Red
Variable
Fan Switch Fan Switch
(N.O.)
Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
12
Black Blue
Figure 23 - Location of Wiring Diagram Decal 3" from Blower
(VTGF33NR/VTGF33PR Shown)
Wiring
Diagram
120 Vac. 60 Hz. .90Amps
DESA International, Bowling Green, KY
WARNING: Never attempt to service heater while it is plugged in, oper-
ating, or hot. Burns and electrical shock could result. Only a qualified ser-
vice person should service or repair heater.
If any of the original wire as supplied with the appliance must be replaced, it must be
replaced with 105°C wire or it’s equivalent.
WARNING: Label all wires prior to disconnection when servicing con-
trols. Wiring errors can cause improper and dangerous operation. Verify
proper operation after servicing.
If any of the original wire as supplied with the appliance must be
replaced, it must be replaced with 105˚C wire or it's equivalent.
Operating the Blower
After final installation of your fireplace, light your gas appliance
with the blower off. After about 15 minutes, turn the blower on to
deliverheatedairatthetoplouvers.Theblowerfeaturesavariable
controlwhichallowsyoutoselectthespeedyoudesire.IntheOFF
position, the blower will not operate. In the ON position, the
blower will start when the thermostat senses a sufficient increase
in firebox temperature (approximately 10 to 20 minutes depend-
ing on heat setting).
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
blowerturnson.Aftertheheatermodulatestothepilotposition,the
blower will continue to run. The blower will shut off after the
firebox temperature decreases.
It is safe to operate fireplace with blower turned off. However, the
blower helps distribute heated air from the fireplace.
Note: Periodically checkthe louversof thefirebox andremoveany
dust, dirt, or other obstructions.
WARNING: A qualified service person must con-
nect fireplace to gas supply. Follow all local codes.
WARNING: For natural gas units, never connect
fireplace to private (non-utility) gas wells. This gas is
commonly known as wellhead gas.
INSTALLING GAS PIPING TO FIREPLACE
LOCATION
WARNING: For propane/LP units, never connect
fireplace directly to propane/LP supply. This fire-
place requires an external regulator (not supplied).
Install the external regulator between the heater and
propane/LP supply.
WARNING: Failure to position the parts in accor-
dance with supplied diagrams or failure to use only
partsspecificallyapprovedwiththisheatermayresult
in damage or personal injury.
WARNING: A qualified service person must con-
nect fireplace to gas supply. Follow all local codes.
15. If gas connections have been made and checked, replace fireplace
floor assembly in fireplace. Feed flexible gas supply line into fire-
placebaseareawhilereplacingfireplacefloorassembly.Makesure
the entire flexible gas line is in fireplace base area. IMPORTANT:
Do not pick up fireplace floor assembly by burners. This could
damage burners. Only handle base by grates.
Note: Be careful of
all wires and components on underside of floor assembly.
16. Reattach fireplace floor assembly with screws removed in step
3 of Removing Fireplace Screen and Floor Assembly, page 8.
Note: Discard the remaining hardware items.After assembly,
make sure all wires are completely clear of blower wheel.
17. Install logs (see Installing Logs, pages 21 through 23) and fire-
place screen (see Installing Screen, page 24).

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INSTALLATION
Installing Gas Piping to Fireplace Location (Cont.)
Connecting Fireplace To Gas Supply
INSTALLATION
Continued
WARNING:Usepipejoint sealant that isresistant
to liquid petroleum (LP) gas.
We recommend that you install a sediment trap in supply line as
showninFigure25.Locatesedimenttrapwhereitiswithinreachfor
cleaning.Installinpipingsystembetweenfuelsupplyandfireplace.
Locatesedimenttrap wheretrapped matter isnot likely tofreeze. A
sediment trap traps moisture and contaminants. This keeps them
from going into fireplace gas controls. If sediment trap is not
installed or is installed wrong, fireplace may not run properly.
Installation must include an equipment shutoff valve, union, and
plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from fireplace (see Figure 24).
IMPORTANT: Install equipment shutoff valve in an accessible
location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
Checkyourbuildingcodesforanyspecialrequirementsforlocating
equipment shutoff valve to fireplaces.
ApplypipejointsealantlightlytomaleNPTthreads.Thiswillprevent
excess sealant from going into pipe. Excess sealant in pipe could
result in clogged fireplace valves. Never use sealant on flare threads.
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
fireplace. If pipe is too small, undue loss of volume
will occur.
Figure 24 - External Regulator with Vent Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
Figure 25 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, pages 42 and 43.
Natural
From Gas Meter
(5" W.C. to 10.5"
W.C. Pressure)
Propane/LP
From External
Regulator (11" W.C.
to 14 " W.C.
Pressure
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
3" Minimum
Installation Items Needed
Beforeinstallingfireplace,makesureyouhavetheitemslistedbelow.
• externalregulator (suppliedbyinstaller,forpropane/LPunitsonly)
• 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 lo-
cal codes) (not 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 42.
For propane/LP connections only, the installer must supply an
external regulator. The external regulator will reduce incoming gas
pressure.Youmustreduceincominggaspressuretobetween11and
14 inches of water. If you do not reduce incoming gas pressure,
heaterregulatordamage couldoccur.Installexternalregulatorwith
the vent pointing down as shown in Figure 24. Pointing the vent
down protects it from freezing rain or sleet.
Sediment Trap
Pipe Cap Tee
Nipple Joint

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17
➞
➞
INSTALLATION
Connecting Fireplace To Gas Supply (Cont.)
Checking Gas Connections
INSTALLATION
Continued
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not provided)
1. If fireplace screen and floor are still installed, see Removing
Fireplace Screen and Floor Assembly, page 8.
2. Route gas line (provided by installer) from equipment shutoff
valve to fireplace. Route flexible gas supply line through one
of the access holes.
CONNECTING FIREPLACE TO GAS SUPPLY
3. Attach theflexible gaslineto gassupply (see Figure26). Check
tightness of flexible gas line attached to gas regulator of fire-
place (see Figure 26).
4. Check all gas connections for leaks. See Checking Gas Con-
nections.
5. Replace fireplace floor assembly. Feed flexible gas line into
fireplace base area while replacing fireplace floor assembly.
Make sure the entire flexible gas line is in fireplace base area.
Note: Be careful of wires and components on underside of
fireplace floor. Reattach fireplace floor assembly with screws
removed in step 3 of Removing Fireplace Screen and Floor
Assembly, page 8.
NOTICE: Most building codes do not permit con-
cealed gas connections. A flexible gas line is pro-
vided to allow accessibility from the fireplace (see
Figure26).Theflexiblegassupply line connection to
the equipment shutoff valve should be accessible.
Figure 26 - Attaching Gas Lines Together
From Gas Meter (Natural)
From External Regulator (Propane/LP)
Flexible Gas Line from
Fireplace Gas Regulator
To Fireplace
Gas Regulator
Equipment Shutoff Valve
Provided by Installer
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main gas valve (con-
trol valve) and equipment shutoff valve from gas supply pip-
ing system. Pressures in excess of 1/2 psig will damage fire-
place gas 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
supplytank valve forpropane/LP gasor openingmain gasvalve
located on or near gas meter for natural gas, or using com-
pressed air.
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 fireplace and equipment shutoff valve to gas sup-
ply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 27, page 18).
2. Pressurize supply piping system by either opening propane/LP
supplytank valve forpropane/LP gasor openingmain gasvalve
located on or near gas meter for natural gas, or using com-
pressed air.
3. Check all joints from gas meter for natural or propane/LP sup-
ply to equipment shutoff valve (see Figures 28 or 29, page 18).
Apply noncorrosive leak detection fluid to all joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections
forleaksafterinstallingorservicing.Correctallleaks
at once.
WARNING: Never use an open flame to check for
aleak.Applyanoncorrosiveleakdetectionfluidtoall
joints.Bubblesformingshowaleak.Correctallleaks
at once.
WARNING:Forpropane/LPunits,makesureexter-
nal regulator has been installed between propane/LP
supply and heater. See guidelines under Installing
Gas Piping to Fireplace Location , page 15.

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Figure 28 - Checking Gas Joints for Natural Gas Fireplace
(VTGF33NR/VTGF33PR Shown)
Figure 29 - Checking Gas Joints for Propane/LP Gas Fireplace
(VTGF33NR/VTGF33PR Shown)
INSTALLATION
Checking Gas Connections (Cont.)
Conventional Fireplace Installation
INSTALLATION
Continued
CONVENTIONAL FIREPLACE INSTALLATION
Conventional installation of fireplace involves installing fireplace
alongwith corner,face,or cabinetmantelwith hearthbaseaccesso-
riesagainstawallinyourhome.Followinstructionsbelowtoinstall
fireplace in this manner.
Note: The instructions below show installation using the cabinet
mantel and hearth base accessories (see Accessories, pages 42 and
43.Thehearthbaseaccessoryshownisoptionalforthisinstallation.
You can install fireplace and cabinet mantel directly on the floor.
The corner mantel accessory cannot be installed with the hearth
bases. You must install corner mantel directly on the floor.
1. Assemble cabinet mantel, hearth base, and trim accessories.
Assembly instructions are included with each accessory.
2. When installing blower, install a properly grounded, 120 volt
three-prong electrical outlet at fireplace location if an outlet is
not there. If possible, locate outlet so cabinet mantel will cover
it when installed (see Figure 30).
3. If not already completed, install gas piping to fireplace location.
This installation includes an approved flexible gas line (if al-
lowed by local codes) after the equipment shutoff valve. The
flexible gas line must be the last item installed on the gas pip-
ing. See Installing Gas Piping to Fireplace Location, page 14.
4. Place hearth base accessory against wall at installation loca-
tion. Cut an access hole in hearth top to run flexible gas line to
fireplace (see Figure 30). Make sure to locate access hole so
cabinet mantel will cover it when installed. Note: You can
secure base to floor using 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 31, page 19).
Make sure mantel is flush against wall.
7. Break off nailing flanges (see Figure 32, page 19) with ham-
mer or pliers.
8. Place cardboard or other protective material on top of hearth
base. Carefully set fireplace on protective material, with back
of fireplace inside mantel opening.
9. Attach flexible gas line to fireplace gas regulator. See Con-
necting Fireplace to Gas Supply, page 17.
10. Routeelectrical cord(s)throughaccessholesin eitherside offire-
place with bushing. Plug electrical cord(s) into electrical outlet.
Figure 30 - Placing Hearth Base Accessory Against Wall
Electrical
Outlet
Hearth
Base
Rigid Pipe and
Gas Shutoff Valve
Gas Line
Access
Hole
Figure 27 - Equipment Shutoff Valve
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 27).
2. Open main gas valve located on or near gas meter for natural
gas or open propane/LP supply tank valve.
3. Place manual ignition switch in the OFF position.
4. Check all joints from equipment shutoff valve to gas valve
(see Figure 28 or 29).Apply noncorrosive leak detection fluid
to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, pages 24 through
26). Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to Appliance, page 25).
ON
POSITION
OFF
POSITION
Open
Closed
Equipment
Shutoff
Valve
Equipment
Shutoff Valve
Manual Gas Valve
Gas Meter
Equipment
Shutoff
Valve
Manual Gas Valve
Propane/LP
Supply
Tank

108117
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For more information, visit www.desatech.com
19
19
INSTALLATION
Conventional Fireplace Installation (Cont.)
Built-In Fireplace Installation
INSTALLATION
Continued
11. Carefully insert fireplace into cabinet mantel (see Figure 33).
Be careful not to scratch or damage hearth base, cabinet man-
tel, or any laminate trim on hearth base. Remove protective
material from top of hearth base and from front of fireplace (if
any).
Note: You can secure 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 all gas connections for leaks. See Checking Gas Con-
nections, pages 17 and 18.
Figure 31 - Installing Cabinet Mantel
Cabinet
Mantel
Figure 33 - Inserting Fireplace Into Cabinet Mantel (EFP33PR
Shown)
Figure 32 - Location of Nailing Flanges (EFP33PR Shown)
Nailing Flanges
BUILT-IN FIREPLACE INSTALLATION
Built-in installation of this fireplace involves installing fireplace
into a framed-in enclosure. This makes the front of fireplace flush
withwall.Ifinstallingamantelabovethefireplace,youmustfollow
theclearancesshown inFigure 37,page 20. Followthe instructions
below to install the fireplace in this manner.
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
1. Frame in rough opening. Use dimensions shown in Figure 34
for the rough opening. If installing in a corner, use dimensions
shown in Figure 35 for the rough opening. The height is 33"
which is the same as the wall opening above.
2. Install and properly ground GA3555, three-prong 120 volt elec-
tricaloutlet, infireplace.Follow instructionsincluded inkit (see
Accessories, pages 42 and 43).
3. If not already completed, install gas piping to fireplace location.
This installation includes an approved flexible gas line (if al-
lowed by local codes) after the equipment shutoff valve. The
flexible gas line must be the last item installed on the gas pip-
ing. See Installing Gas Piping to Fireplace Location, page 15.
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 Fire-
place to Gas Supply, page 16.
6. Plug electrical cord(s) into electrical outlet installed in step 2.
7. Carefully insert fireplace into rough opening.
35
1
/ 2 "
17
3
/ 4 "
33"
39
3
/ 8 "27
7
/ 8 "
55
5
/ 8 "
35
1
/ 2 "
Figure 34 - Rough Opening for
Installing in Wall Figure 35 - Rough Opening
for Installing in Corner

108117
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For more information, visit www.desatech.com
20
INSTALLATION
Built-In Fireplace Installation (Cont.)
Assembling And Attaching Optional Brass Trim
INSTALLATION
Continued
Figure36-AttachingFireplacetoWallStuds (EFP33PRShown)
Nailing
Flanges
Nails or
Wood
Screws
8. Attach fireplace to wall studs using nails or wood screws
through holes in nailing flange (see Figure 36).
9. Check all gas connections for leaks. See Checking Gas Con-
nections, pages 17 and 18.
10. Install brass trim. See Assembling and Attaching Optional
Brass Trim.
Mantel Clearances for Built-In Installation
Ifplacing mantelabovebuilt-in fireplace,you mustmeet minimum
clearance between mantel shelf and top of fireplace opening.
NOTICE:Surfacetemperaturesofadjacent walls and
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Followallminimumclearancesshowninthismanual.
NOTICE: If your installation does not meet the mini-
mum clearances shown, you must do one of the
following:
•raise the mantel shelf to an acceptable height
•remove the mantel shelf
Figure 37 - Minimum Mantel Clearances for Built-In Installation
Supplied Firebox
Hood Must Be
Used at All Times
Wire-mesh
Screen
Firebox
Noncombustible
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
ASSEMBLING AND ATTACHING OPTIONAL
BRASS TRIM
(Included with Mantel Accessory)
Note: Theinstructions belowshowassembling andattaching brass
trim to fireplace.
1. Remove packaging from three pieces of brass trim.
2. Locate four brass screws, two adjusting plates with set screws,
and two shims in the hardware packet.
3. Align shim under adjusting plate as shown in Figure 38, page 21.
4. Slide one end of adjusting plate/shim in slot on mitered edge
of top brass trim (see Figure 38, page 21).
5. Slide other end of adjusting plate/shim in slot on mitered edge
of side brass trim (see Figure 38, page 21).
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. Place the assembled trim onto fireplace cabinet.
Align hanging notches on trim with hanging screws on side of
fireplace (see Figure 39, page 21). Push trim firmly into place,
sliding hanging notches over hanging screws.