Desa Vanguard VSGF28NTE Quick start guide

UNVENTED (VENT-FREE) GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
THERMOSTATICALLY-CONTROLLED MODELS
VSGF28NTE AND VSGF28PTE WITH SPLIT OAK LOGS
®
Shown with optional cabinet mantel, hearth base, and trim accessories.
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WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing
property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency, or the gas supplier.

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2
WARNING: Improper installation, adjustment, altera-
tion, service, or maintenance can cause injury or prop-
erty damage. Refer to this manual for correct installation
and operational procedures. For assistance or addi-
tional information consult a qualified installer, service
agency, or the gas supplier.
WARNING: This is an unvented gas-fired heater. It uses
air (oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventilation air
must be provided. Refer to Air for Combustion and
Ventilation section on page 4 of this manual.
This appliance may be installed in an aftermarket,*
permanently located, manufactured (mobile) home,
where not prohibited by local codes.
This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the
manufacturer
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Unpacking ........................................................... 5
Product Identification .......................................... 5
Product Features ................................................ 5
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 8
Operating Fireplace .......................................... 17
Inspecting Burners ............................................ 19
Cleaning and Maintenance ............................... 20
Troubleshooting ................................................. 21
Specifications .................................................... 25
Wiring Diagram ................................................. 25
Service Hints ..................................................... 25
Replacement Parts ........................................... 25
Technical Service .............................................. 25
Illustrated Parts Breakdown and Parts List ....... 26
Accessories ....................................................... 30
Warranty Information .......................... Back Cover

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113135-01A 3
WARNING: Do not use a
blower insert, heat exchanger in-
sert, or other accessory not ap-
proved for use with this fireplace.
Due to high temperatures, the
appliance should be located out
of traffic and away from furni-
ture and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Fireplace front and screen be-
come very hot when running fire-
place. Keep children and adults
away from hot surfaces to avoid
burns or clothing ignition. Fire-
place will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.
Carefully supervise young chil-
dren when they are in the room
with fireplace.
You must operate this fireplace
with the fireplace screen and
hood in place. Make sure fire-
place screen and hood are in
place before running fireplace.
Keep the appliance area clear
and free from combustible ma-
terials, gasoline, and other flam-
mable vapors and liquids.
1. This appliance is only for use with the type of
gas indicated on the rating plate. This appli-
ance is not convertible for use with other
gases.
2. Do not place propane/LP supply tank(s) in-
side any structure. Locate propane/LP supply
tank(s) outdoors (propane/LP units only).
SAFETY INFORMATION
WARNING: This product con-
tainsand/or generates chemicals
known to the State of California
to cause cancer or birth defects,
or other reproductive harm.
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
cause serious injury or death
from burns, fire, explosion, elec-
trical shock, and carbon mon-
oxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble the flu, with head-
aches, dizziness, or nausea. If you have these signs,
the 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 pregnant women, people with heart
or lung disease or anemia, those under the influence
of alcohol, and those at high altitudes.
Natural and Propane/LP Gas: Natural and propane/
LP gases are odorless. An odor-making agent is
added to the gas. The odor helps 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 warn-
ings. Keep this manual for reference. It is your
guide to safe and proper operation of this fireplace.
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.

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4
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 bed-
room 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, vermiculite, or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of fireplace.
7. This fireplace is designed to be smokeless. If
logs ever appear to smoke, turn off fireplace
and call a qualified service person.
Note: Dur-
ing initial operation, slight smoking could
occur due to log curing and fireplace burning
manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 20.
9. Before using furniture polish, wax, carpet
cleaner, or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
10. This fireplace needs fresh air ventilation to
run properly. This fireplace has an Oxygen
Depletion Sensing (ODS) safety shutoff sys-
tem. The ODS shuts down the fireplace if not
enough fresh air is available. See Air for Com-
bustion and Ventilation, pages 6 through 8. If
fireplace keeps shutting off, see Troubleshoot-
ing, pages 21 through 24.
11. Do not run fireplace
• where flammable liquids or vapors are used
or stored
• under dusty conditions
12. Do not use this fireplace to cook food or burn
paper or other objects.
SAFETY INFORMATION
Continued
13. Do not use fireplace if any part has been ex-
posed to or under water. Immediately call a
qualified service technician to inspect the fire-
place and to replace any part of the control
system and any gas control which has been
under water.
14. Do not operate fireplace if any log is broken.
Do not operate fireplace if a log is chipped
(dime-sized or larger).
15. Turn fireplace off and let cool before servic-
ing. Only a qualified service person should
service and repair fireplace.
16. Operating fireplace above elevations of 4,500
feet could cause pilot outage.
17. To prevent performance problems, do not use
propane/LP fuel tanks of less than 100 lbs.
capacity (propane/LP units only).
18. Provide adequate clearances around air
openings.
LOCAL CODES
Install and use fireplace with care. Follow all lo-
cal codes. In the absence of local codes, use the
latest edition of The National Fuel Gas Code ANSI
Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269

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113135-01A 5
UNPACKING
CAUTION: Do not remove
the data plates attached to the
heater base assembly. The data
plates contain important war-
ranty and safety information.
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 pack-
ing. Note: The hood is located in the packing
on the right hand side of the heater front. Lift
the heater off the bottom tray.
PRODUCT
IDENTIFICATION
Figure 1 - Log Base Assembly, Split Oak Set
Figure 2 - Fireplace
Blower
Assembly
Top Louver
Assembly
Fireplace
Hood
Bottom Louver
Assembly
Screen
Assembly
Top Outer
Casing
Firebox
Support
Rear Burner
Rear
Log
Middle Log
Front
Log
Front Burner
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 damage. If
damaged, promptly inform dealer where you
bought fireplace.
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 realis-
tic flames and glowing embers. When used with-
out the blower, the fireplace requires no electric-
ity making it ideal for emergency backup heat.
SAFETY DEVICE
This fireplace has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
heaters. The ODS/pilot system shuts off the fire-
place if there is not enough fresh air.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system re-
quires no matches, batteries, or other sources to
light fireplace.
BLOWER ASSEMBLY
This fireplace has a blower assembly. The blower
operates thermostatically and has a variable speed
control. The blower circulates heated air from the
fireplace into the room. Use of blower is optional.
THERMOSTAT CONTROL
This fireplace has a thermostat sensing bulb and a
control valve. The thermostat controls the heat
output and flame height. This maintains a consis-
tent room temperature. Even the lowest setting
provides realistic flames and glowing embers from
two burners. Selecting higher comfort settings al-
lows fireplace to run longer, producing greater heat
output. At lower comfort settings, the fireplace will
run less. This results in increased heating com-
fort. This can also result in lower gasbills.

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AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
notbeinstalledinaconfinedspace
or unusually tight construction
unless provisions are provided
foradequate combustion andven-
tilation air. Read the following in-
structions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efficient than
ever. New materials, increased insulation, and new
construction methods help reduce heat loss in
homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out
and the warm air in. During heating months, home
owners want their homes as airtight as possible.
While it is good to make your home energy effi-
cient, your home needs to breathe. Fresh air must
enter your home. All fuel-burning appliances need
fresh air for proper combustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and fuel
burning appliances draw air from the house to
operate. You must provide adequate fresh 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 fol-
lowing ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 6 through 8 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 ven-
tilation. However, in buildings of unusually tight
construction, you must provide additional fresh air.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the out-
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10-11 kg per pa-sec-m2)
or less with openings gasketed or
sealed and
b. weather stripping has been added on
openable windows and doors and
c. caulking or sealants are applied to ar-
eas such as joints around window and
door frames, between sole plates and
floors, between wall-ceiling joints, be-
tween wall panels, at penetrations for
plumbing, electrical, and gas lines, and
at other openings.
If your home meets all of the three criteria
above, you must provide additional fresh
air. See Ventilation Air From Outdoors ,
page 6 .
If your home does not meet all of the
three criteria above, proceed to Deter-
mining Fresh-Air Flow for Fireplace Lo-
cation , below.
Confined Space and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 defines a confined space as a space whose vol-
ume 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 un-
confined space as a space whose volume is not
less than 50 cubic feet per 1,000 Btu per hour (4.8
m3per kw) of the aggregate input rating of all ap-
pliances installed in that space. Rooms communi-
cating directly with the space in which the appli-
ances are installed*, through openings not fur-
nished with doors, are considered a part of the un-
confined space.
*Adjoining rooms are communicating only if there
are doorless passageways or ventilation grills be-
tween them.
DETERMINING FRESH-AIR FLOW
FOR HEATER 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 pas-
sageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x
width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 cu. ft. (vol-
ume of space)

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113135-01A 7
AIR FOR COMBUSTION
AND VENTILATION
Continued
If additional ventilation to adjoining room is sup-
plied with grills or openings, 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 = (Maxi-
mum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in
the space.
Vent-free 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. Di-
rect-vent draws combustion air from the outdoors
and vents to the outdoors.
Example:
Gas water heater ______________ Btu/Hr
Vent-free fireplace ______________ Btu/Hr
Total ______________ Btu/Hr
4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
________ Btu/Hr (maximum the space can support)
________ Btu/Hr (actual amount of Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the space
can support)
73,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the above example is a confined space
because the actual Btu/Hr used is more than the maxi-
mum Btu/Hr the space can support. You must pro-
vide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoin-
ing room. If the extra space provides an uncon-
fined space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building.
B. Vent room directly to the outdoors. See Ventila-
tion Air From Outdoors, page 8.
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 uncon-
fined space. You will need no additional fresh air ven-
tilation.
WARNING: If the area in
which the heater may be oper-
ated is smaller than that defined
as an unconfined space 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,
ANSI Z223.1/NFPA 54 Section
5.3 or applicable local codes .
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un-
confined space. When ventilating to an adjoining
unconfined space, you must provide two perma-
nent 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.
40,000
+ 28,000
= 68,000
Figure 3 - Ventilation Air from Inside
Building
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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"

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WARNING: Never install the
fireplace
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the fireplace
• in high traffic areas
• in windy or drafty areas
WARNING:Thesemodels have
a three-prong, grounded electri-
cal plug. This plug helps protect
you against electrical shock. Only
connect plug to a properly
grounded,three-prong receptacle.
Do not cut or remove the ground-
ing prong from this plug.
CAUTION: This fireplace cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to fireplace. Install-
ing fireplace next to vinyl or cloth
wall coverings or operating
heater where impurities (such
as, but not limited to, tobacco
smoke, aromatic candles, clean-
ing fluids, oil or kerosene lamps,
etc.) in the air exist, may dis-
color walls or cause odors.
Note: Your fireplace is designed to be used in zero
clearance installations. Wall or framing material
can be placed directly against 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 Fire-
place Installation, page 11).
AIR FOR COMBUSTION
AND VENTILATION
Continued
INSTALLATION
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
central heating system, you may
run system’s circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
WARNING: A qualified ser-
vice person must install fire-
place. Follow all local codes.
Figure 4 - Ventilation Air from Outdoors
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
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Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills
or ducts. You must provide two permanent open-
ings: one within 12" of the ceiling and one within
12" of the floor. Connect these items directly to
the outdoors or spaces open to the outdoors. These
spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
Section 5.3, Air for Combustion and Ventilation
for required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat-con-
trolled power vent. Heated air entering the attic
will activate the power vent.

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113135-01A 9
INSTALLATION
Continued
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is beneficial, installing fire-
place in rooms without enough ventilation air may
cause mildew to form from too much moisture.
See Air for Combustion and Ventilation, pages 6
through 8.
IMPORTANT: Make sure the fireplace is level. If
fireplace is not level, log set will not work properly.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP).
If your gas supply is not correct, do not install fire-
place. Call dealer where you bought fireplace for
proper type fireplace.
WARNING: This appliance
is equipped for (natural or pro-
pane/LP) gas. Field conversion
is not permitted.
ELECTRICAL HOOKUP
This fireplace has a blower assembly with an elec-
trical cord. The electrical cord is five feet in length.
You must locate fireplace within reach of a 120-
volt grounded electrical outlet. If not, you must
install an electrical outlet within reach of fireplace
power cord. The GA3555 outlet accessory may
be used for built-in installation when a blower is
installed.
INSTALLING HOOD
Install hood to rail already installed in fireplace as
shown in Figure 5. Use 3 Phillips screws provided.
Figure 5 - Installing Hood
Screw
Hood
Rail
ASSEMBLING AND ATTACHING
OPTIONAL PERIMETER TRIM
(Included with Mantel Accessory)
IMPORTANT: If you are recessing the firebox in
a wall, do not attach trim at this time. See page 10
for built-in fireplace installation.
Note: The instructions below show assembling
and attaching trim to fireplace.
1. Remove packaging from three pieces of trim.
2. Locate four screws, two adjusting 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 in slot
on mitered edge of top trim (see Figure 6).
5. Slide other end of adjusting plate/shim in slot
on mitered edge of side trim (see Figure 6).
6. While firmly holding edges of trim together,
tighten both set screws on the adjusting plate
with slotted screwdriver.
7. Repeat steps 1 through 6 for other side.
8. Tighten trim hanging screws (#10 x 6.25 shoul-
der) 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 7). Push trim firmly into place, slid-
ing hanging notches over hanging screws.
Figure 6 - Assembling Perimeter Trim
Side Trim Top
Trim
Slot
Mitered Edge
Slot
Shim
Set Screws
Adjusting
Plate
Figure 7 - Attaching Perimeter Trim to
Fireplace
Trim Hanging
Screws
Assembled
Trim Hanging Notches
on Trim

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10
INSTALLATION
Continued
INSTALLATION CLEARANCES
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling, 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 cabi-
net to any combustible material and wall
should follow diagram in Figure 8.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and pro-
trudes 3 1/2" from the wall. This combustible
material must be 4" from the side of the fire-
place opening (see Figure 8).
B. Clearances from the top of the fireplace open-
ing to the ceiling should not be less than 42
inches.
Figure 8 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
floor. The corner mantel accessory cannot be in-
stalled with the G3000F/G3001U/G3004W/
G3006F/G3007U hearth base. The corner mantel
can be paired with the G3008F/G3009U/G3010F
corner hearth base. If mounting fireplace and cabi-
net or corner mantel to the floor, an optional G3005
Slim Base kit may be installed.
1. Assemble cabinet mantel, hearth base, and
trim accessories. Assembly instructions are in-
cluded with each accessory.
2. When installing blower, install a properly
grounded, 120 volt three-prong electrical out-
let at fireplace location if an outlet is not there.
If possible, locate 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 equip-
ment shutoff valve. The flexible gas line must
be the last item installed on the gas piping.
See Installing Gas Piping to Fireplace Loca-
tion, page 12.
4. Place hearth base accessory against wall at in-
stallation location. Cut an access hole in hearth
top to run gas line to fireplace (see Figure 9).
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 gas line through access hole in hearth base.
6. Center cabinet mantel on hearth base (see Fig-
ure 10, page 11). Make sure mantel is flush
against wall.
7. Break off nailing flanges (see Figure 11, page
11) with hammer 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.
CONVENTIONAL FIREPLACE
INSTALLATION
Conventional installation of this fireplace involves
installing fireplace along with the corner or cabi-
net mantel with hearth base accessories against a
wall in your home (see Accessories, pages 30 and
31). Follow the instructions below to install the
fireplace in this manner.
Note: The instructions below show installation
using the cabinet mantel and the G3000F/G3001U/
G3004W/G3006F/G3007U series hearth base ac-
cessories. The hearth base accessory shown is
optional for this installation. You can install fire-
place and cabinet/corner mantel directly on the
Figure 9 - Placing Hearth Base
Accessory Against Wall
Electrical
Outlet
Hearth
Base
Rigid Pipe
and Gas
Shutoff Valve
Gas Line
Access
Hole

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113135-01A 11
INSTALLATION
Continued
Figure 10 - Installing Cabinet Mantel
Cabinet
Mantel
Figure 11 - Location of Nailing Flanges
Nailing
Flanges
9. If blower is installed, route blower electrical
cord through access holes in either side of fire-
place. Note: Bushing may be moved if neces-
sary. Plug electrical cord into electrical outlet.
10. Carefully insert fireplace into cabinet mantel
(Figure 12). Be careful not to scratch or dam-
age hearth base, cabinet mantel, or any lami-
nate trim on hearth base. Remove protective
material from top of hearth base and from front
of fireplace (if any). Note: You can secure fire-
place 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.
11. Attach gas line from fireplace gas regulator
to gas supply. See Connecting Fireplace to
Gas Supply, page 14.
12. Check all gas connections for leaks. See
Checking Gas Connections, page 15.
Figure 12 - Inserting Fireplace Into
Cabinet Mantel
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BUILT-IN FIREPLACE INSTALLATION
Built-in installation of this fireplace involves in-
stalling fireplace into a framed-in enclosure. This
makes the front of fireplace flush with wall. If in-
stalling a mantel above the fireplace, you must
follow the clearances shown in Figure 16, page
12. Follow the instructions below to install the fire-
place in this manner.
1. Frame in rough opening. Use dimensions
shown in Figure 13 for the rough opening.
If installing in a corner, use dimensions shown
in Figure 14 for the rough opening. The height is
33" which is the same as the wall opening above.
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
Figure 14 - Rough Opening for Installing
in Corner
Figure 13 - Rough Opening for Installing
in Wall
39 3 / 8"
27 7
/ 8"
55 5
/ 8"
35 1
/ 2"
35
1
/ 2 "
17
3
/ 4 "
33"

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12
INSTALLATION
Continued
Figure 15 - Attaching Fireplace to Wall
Studs
Nailing
Flanges
Nails or
Wood
Screws
Mantel Clearances for Built-In
Installation
If placing mantel above built-in fireplace, you must
meet minimum clearance between mantel shelf
and top of fireplace opening.
If your installation does not meet the below mini-
mum clearances, you must:
• raise the mantel to an acceptable height,
OR
• remove the mantel.
Figure 16 - Minimum Mantel Clearances
for Built-In Installation
Mantel Shelf
13" 16" 19" 21"
2 1/2"
6"
8"
10"
Minimum Non-
Combustible
Material
Note: All Vertical
measurements are
from top of fireplace
opening to bottom
of mantel shelf.
INSTALLING GAS PIPING TO
FIREPLACE LOCATION
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified ser-
vice person must connect fire-
place to gas supply. Follow all
local codes.
CAUTION: Never connect
propane/LP fireplace directly to
the propane/LP supply. This
heater requires an external regu-
lator (not supplied). Install the
external regulator between the
heater and propane/LP supply.
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This gas
is commonly known as well-
head gas.
2. If using blower, install and properly ground
GA3555, three-prong 120 volt electrical outlet,
in fireplace. Follow instructions included in kit.
3. Install gas piping into fireplace location. This
installation includes an approved flexible gas
line (if allowed by local codes) after the equip-
ment shutoff valve. The flexible gas line must
be the last item installed on the gas piping.
See Installing Gas Piping to Fireplace Loca-
tion, column 2.
4. Carefully set fireplace in front of rough open-
ing with back of fireplace inside wall opening.
5. Plug electrical cord into electrical outlet in-
stalled in step 2.
6. Carefully insert fireplace into rough opening.
7. Attach flexible gas line to gas supply. See
Connecting Fireplace to Gas Supply, page 14.
8. Attach fireplace to wall studs using nails or
wood screws through holes in nailing flange
(see Figure 15).
9. Check all gas connections for leaks. See
Checking Gas Connections, page 15.
10. Install trim after final finishing and/or paint-
ing of wall (see Figure 7, page 9).

www.desatech.com
113135-01A 13
INSTALLATION
Continued
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 propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap (optional)
• tee joint
• pipe wrench
* 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, pages 30 and 31.
For propane/LP units, the installer must supply an
external regulator. The external regulator will re-
duce incoming gas pressure. You must reduce in-
coming gas pressure to between 11 and 14 inches
of water. If you do not reduce incoming gas pres-
sure, heater regulator damage could occur. Install
external regulator with the vent pointing down as
shown in Figure 17. Pointing the vent down pro-
tects it from freezing rain or sleet.
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing
may be used in certain areas.
Check your local codes. Use
pipe of 1/2" diameter or greater
to allow proper gas volume to
fireplace. If pipe is too small,
undue loss of volume will occur.
Installation must include an equipment shutoff valve,
union, and plugged 1/8" NPT tap. Locate NPT tap
within reach for test gauge hook up. NPT tap must
be upstream from fireplace (see Figure 18).
IMPORTANT: Install equipment shutoff valve in
an accessible location. The equipment shutoff
valve is for turning on or shutting off the gas to
the appliance.
Check your building codes for any special require-
ments for locating equipment shutoff valve to fire-
places.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could re-
sult in clogged fireplace valves.
WARNING: Use pipe joint
sealant that is resistant to liq-
uid petroleum (LP) gas.
We recommend that you install a sediment trap
in supply line as shown in Figure 18. Locate sedi-
ment trap where it is within reach for cleaning.
Install in piping system between fuel supply and
fireplace. Locate sediment trap where trapped
matter is not likely to freeze. 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.
Pipe Tee
Nipple Cap Joint
Figure 17 - External Regulator with Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
Figure 18 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See Ac-
cessories, pages 30 and 31.
** Minimum inlet pressure for purpose of input
adjustment.
Natural Gas
From Gas Meter
(5" w.c. to 10.5"
w.c. Pressure
Propane/LP
From External
Regulator
(11"w.c.** to
14"w.c.
Pressure)
3" Minimum
Sediment Trap
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*

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14
INSTALLATION
Continued
CONNECTING FIREPLACE TO GAS
SUPPLY
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not pro-
vided)
1. Remove fireplace screen. Remove two screws
that hold fireplace screen in place for ship-
ping. These screws are located near top of
screen. Discard screws. Lift fireplace screen
up and 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: If adding the G8000 series brick liner ac-
cessory, install it now. Follow instructions in
G8000 accessory kit.
CAUTION: Do not pick up
log base assembly by burners.
This could damage burners.
Only handle base by grates.
3. Route gas line (provided by installer) from
equipment shutoff through one of the access
holes.
NOTICE: Most building codes do
not permit concealed gas con-
nections. A flexible gas line is
provided to allow accessibility
from the fireplace (see Figure 20).
The flexible gas supply line con-
nection to the equipment shutoff
valve should be accessible.
4. Attach flexible gas line to gas supply (see Fig-
ure 20). Check connection of flexible gas line
attached to gas regulator of fireplace (see Fig-
ure 20).
Figure 19 - Removing Log Base
Assembly From Fireplace
Figure 20 - Attaching Flexible Gas Lines
Together
To Fireplace
Gas Regulator Flexible Gas Line
from Equipment
Shutoff Valve
Equipment Shutoff Valve
Provided by Installer
Natural Gas
To Gas Meter
Propane/LP
To External Regulator
5. Check all gas connections for leaks. See
Checking Gas Connections, page 15.
6. Replace log base assembly back into fireplace.
Feed flexible gas line into fireplace base area
while replacing log base assembly. Make sure
the entire flexible gas line is in fireplace base
area. Reattach log base assembly to fireplace
with screws removed in step 2.

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113135-01A 15
Pressure Testing Fireplace Gas
Connections
1. Open equipment shutoff valve (see Figure 21).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP sup-
ply tank valve.
3. Make sure control knob of fireplace is in the
OFF position.
4. Check all joints from equipment shutoff valve
to gas control valve (see Figure 22 or 23).
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 17 and 18). Check all other internal
joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to
Appliance, page 18).
INSTALLATION
Continued
Equipment Shutoff Valve
Propane/LP
Supply Tank
Figure 21 - Equipment Shutoff Valve
O
N
POSI
T
O
PO
S
Open
Closed
Equipment
Shutoff
Valve
Figure 23 - Checking Gas Joints
(Propane/LP Gas Only)
Gas Control Valve
Figure 22 - Checking Gas Joints (Natural
Gas Only)
Equipment
Shutoff
Valve
Gas Meter
Gas Control Valve
CHECKING GAS CONNECTIONS
WARNING: Test all gas pip-
ing and connections, internal
and external to unit, for leaks
after installing or servicing. Cor-
rect all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak de-
tection fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
Pressure Testing Gas Supply Piping
System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect fireplace with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply pipping. Pres-
sures in excess of 1/2 psig will damage fire-
place gas regulator.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve lo-
cated on or near gas meter for natural gas, or
by using compressed 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 supply. Check reconnected fit-
tings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG
(3.5 kPa)
1. Close equipment shutoff valve (see Figure 21).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve lo-
cated on or near gas meter for natural gas, or
using compressed air.
3. Check all joints from gas meter for natural or
propane/LP supply to equipment shutoff valve
(see Figure 22 or 23). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.

www.desatech.com 113135-01A
16
INSTALLATION
Continued
INSTALLING LOGS
WARNING: Failure to position
theparts inaccordancewith these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
Each log is marked with a number. These num-
bers will help you identify the log when install-
ing. It is very important to install these logs ex-
actly as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place front log (#1) on top of the grate. Make
sure the notches in the bottom of the log fit
over the grate prongs (see Figure 24). Push
back of logs flush with metal grate bars.
2. Rest middle log (#2) behind metal posts on
grate assembly. Make sure the grooves in the
bottom of the log fit over the grate. Bring the
log forward next to the metal posts (see Fig-
ure 25).
3. Slide the grooves in the back of the rear log
(#3) against the rear grate prongs. Make sure
the log fits securely over the prongs (see Fig-
ure 26). Make sure log is completely vertical
and not leaning in toward burner where the
flame will touch the log.
4. Install fireplace screen by slipping notches of
fireplace screen over screws on front of fire-
place (see Figure 27).
Front Log (#1)
Grate
Prongs
Metal Grate Bars
Figure 24 - Installing Front Log (#1)
Notch
Middle Log (#2)
Metal Post
Grate
Figure 25 - Installing Middle Log (#2)
Rear Log (#3)
Grate
Prong
Grate
Prong
Groove
in Back
of Log
Groove
in Back
of Log
Figure 26 - Installing Rear Log (#3)
Groove
Groove
Figure 27 - Installing Fireplace Screen
Notches
Screws for
Mounting
Screen

www.desatech.com
113135-01A 17
NOTICE: During initial operation
of new fireplace, burning logs
will give off a paper-burning
smell. Orange flame will also be
present. Open window to vent
smell. Operate fireplace on HI
position to burn off odor. This
will only last a few hours.
1. STOP! Read the safety information, col-
umn 1.
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise to the
OFF position (see Figure 28).
4. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP! Follow “B” in the
safety information, column 1. If you don’t
smell gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press in
control knob for five (5) seconds (see Fig-
ure 28).
Note: If running fireplace for first time,
there will be air in gas line. You may need
to press in control knob for 30 seconds or
longer. This will allow air to bleed from the
gas system.
6. Continue pressing control knob in. Press
and release ignitor button. This will light
pilot. The pilot is attached to the front
burner. If needed, keep pressing ignitor but-
ton until pilot lights.
Note: If pilot does not stay lit, contact a
qualified service person or gas supplier for
repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure, page 18.
Figure 28 - Control Knob and Ignitor
Button Location
Ignitor Button Control
Knob
OPERATING FIREPLACE
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a fire or explosion may result
causing property damage, per-
sonal injury or loss of life.
A. This appliance has a pilot which must be
lighted by hand. When lighting the pilot,
follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not
use any phone in your building.
• Immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier, call
the fire department.
C. Use only your hand to push in or turn the
gas control knob. Never use tools. If the
knob will not push in or turn by hand, don’t
try to repair it, call a qualified service tech-
nician 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 quali-
fied service technician to inspect the appli-
ance and to replace any part of the control
system and any gas control which has been
under water.
LIGHTING
INSTRUCTIONS
WARNING: You must oper-
ate this fireplace with the fire-
place screen in place. Make sure
fireplace screen is installed be-
fore running fireplace.

www.desatech.com 113135-01A
18
7. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 3
through 7. This fireplace has a safety inter-
lock system. Wait one (1) minute for sys-
tem to reset before lighting pilot again.
• If control knob does not pop out when re-
leased, contact a qualified service person
or gas supplier for repairs.
8. Turn control knob counterclockwise
to desired heating level. The burn-
ers should light. Set control knob to any
heat level between HI and LO.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
OPERATING FIREPLACE
Continued
Figure 29 - Pilot
Ignitor Electrode Pilot Burner
Note: Selecting the HI setting will cause the
burner to remain on without modulating down
in most cases.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting In-
structions, page 17.
2. Depress control knob and light pilot with
match.
3. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Now follow step 8
under Lighting Instructions, column 1.
BLOWER
OPERATION
WARNING: This fireplace has
a three-prong, grounded electri-
cal plug. This plug helps protect
you against electrical shock.
Only connect plug to a properly
grounded, three-prong recep-
tacle. Do not cut or remove the
grounding prong from this plug.
Locate the blower switch by opening lower lou-
ver on fireplace. Blower switch is located at
lower left inside louver door.
This thermostat-controlled blower has a vari-
able speed control with an ON/OFF switch. The
blower will start when the thermostat senses a
sufficient increase in firebox temperature.
Note: It is safe to operate fireplace with blower
turned off. However, the blower helps distrib-
ute heated air from the fireplace.
Note: Periodically check the louvers of the
firebox and remove any dust, dirt, or other ob-
structions.
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Fireplace
Turn control knob clockwise to the
OFF position.
Shutting Off Burners Only (pilot stays lit)
Turn control knob clockwise to the
PILOT position.
THERMOSTAT
CONTROL OPERATION
You can set the thermostat control knob to any
comfort level between HI and LO. The ther-
mostat will gradually modulate the heat out-
put and flame height from higher to lower set-
tings, or pilot, in order to maintain the comfort
level you select. The ideal comfort setting will
vary by household depending upon the amount
of space to be heated, the output of the central
heating system, etc.

www.desatech.com
113135-01A 19
INSPECTING BURNERS
Check pilot flame pattern and burner flame pat-
terns often.
PILOT FLAME PATTERN
Figure 30 shows a correct pilot flame pattern. Fig-
ure 31 shows an incorrect pilot flame pattern. The
incorrect pilot flame is not touching the thermo-
couple. This will cause the thermocouple to cool.
When the thermocouple cools, the fireplace will
shut down.
If pilot flame pattern is incorrect, as shown in Fig-
ure 31
• turn fireplace off (see To Turn Off Gas to Ap-
pliance, page 18)
• see Troubleshooting, pages 21 through 24
Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue and
have no yellow or orange color.
FRONT BURNER FLAME PATTERN
Figure 32 shows correct front burner flame pat-
tern. Figure 33 shows incorrect front burner flame
pattern. The incorrect burner flame pattern shows
yellow tipping at top of blue flame.
WARNING: If front burner
flame pattern shows yellow tip-
ping, your fireplace could pro-
duce increased levels of carbon
monoxide. Follow instructions
at bottom of this page. Yellow
flame on rear burner is normal.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by fireplace, causing brief
patches of orange flame.
If front burner flame pattern is incorrect, as shown
in Figure 33
• turn fireplace off (see To Turn Off Gas to Ap-
pliance, page 18)
• see Troubleshooting, pages 21 through 24
Figure 30 - Correct Pilot Flame Pattern
(Propane/LP Shown)
Figure 31 - Incorrect Pilot Flame Pattern
(Propane/LP Shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 33 - Incorrect Front Burner Flame
Pattern
Figure 32 - Correct Front Burner Flame
Pattern
Yellow Tipping At
Top of Blue Flame

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20
CLEANING AND
MAINTENANCE
WARNING: Turn off fireplace
and let cool before cleaning.
CAUTION: You must keep
control areas, burners, and cir-
culating air passageways of fire-
place clean. Inspect these areas
of fireplace before each use.
Have fireplace inspected yearly
by a qualified service person.
Fireplace may need more fre-
quent cleaning due to exces-
sive lint from carpeting, bed-
ding material, pet hair, etc.
WARNING: Failure to keep
the primary air opening(s) of the
burner(s) clean may result in
sooting and property damage.
BURNER INJECTOR HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper amount
of air to mix with the gas. This provides a clean
burning flame. Keep these holes clear of dust, dirt,
lint, and pet hair. Clean these air inlet holes prior to
each heating season. Blocked air holes will create
soot. We recommend that you clean the unit every
three months during operation and have heater in-
spected yearly by a qualified service person.
We also recommend that you keep the burner tube
and pilot assembly clean and free of dust and dirt.
To clean these parts we recommend using com-
pressed air no greater than 30 PSI. Your local com-
puter store, hardware store, or home center may
carry compressed air in a can. You can use a
vacuum cleaner in the blow position. If using com-
pressed air in a can, please follow the directions
on the can. If you don't follow directions on the
can, you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burner, pilot, and primary air inlet
holes on injector holder for dust and dirt (see
Figure 34).
3. Blow air through the ports/slots and holes in
the burner.
4. Check the injector holder located at the end
of the burner tube again. Remove any large
particles of dust, dirt, lint, or pet hair with a
soft cloth or vacuum cleaner nozzle.
5. Blow air into the primary air holes on the in-
jector holder.
6. In case any large clumps of dust have now been
pushed into the burner repeat steps 3 and 4.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot as-
sembly. There is a small pilot air inlet hole about
two inches from where the pilot flame comes out
of the pilot assembly (see Figure 35). With the
unit off, lightly blow air through the air inlet hole.
You may blow through a drinking straw if com-
pressed air is not available.
LOGS
• If you remove logs for cleaning, refer to In-
stalling Logs, pages 16, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
Figure 34 - Injector Holder On Outlet
Burner Tube
Burner
Tube
Primary Air
Inlet Holes
Ports/Slots
Injector
Holder
Figure 35 - Pilot Inlet Air Hole
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Ports/Slots