Desa FPVF33NRA Quick start guide

TM
UNVENTED (VENT-FREE) GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
Save this manual for future reference.
Save this manual for future reference.
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Thisappliancemaybeinstalledinanaftermarket,*permanentlylocatedmanufactured(mobile)
home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate.This appliance
is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing 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
qualifiedinstaller,serviceagency,orthegassupplier.
WARNING: Improper installa-
tion,adjustment,alteration,ser-
vice, or maintenance can cause
injury or property damage. Re-
fer to this manual for correct
installationandoperationalpro-
cedures. For assistance or ad-
ditional information consult a
qualified installer, service
agency, or the gas supplier.
WARNING: This is an unvented
gas-fired heater. It uses air (oxy-
gen) from the room in which it is
installed.Provisionsforadequate
combustion and ventilation air
mustbeprovided. Referto Airfor
Combustion and Ventilation sec-
tion on page 4 of this manual.
VYGF33PRB, VYGF33NRB, FPVF33PRA (Millivolt) and FPVF33NRA (Millivolt)
REMOTE-READY GAS FIREPLACE SYSTEMS
Shown with optional cabinet
mantel, hearth base, and trim
accessories.
Patent Pending
;;;;;;
;;;;;;
;;;;;;
;;;;;;
;;;;;;
;;;;;;
;;;;;;
;;;;;;
QQQQQQ
QQQQQQ
QQQQQQ
QQQQQQ
QQQQQQ
QQQQQQ
QQQQQQ
QQQQQQ
¢¢¢¢¢¢
¢¢¢¢¢¢
¢¢¢¢¢¢
¢¢¢¢¢¢
¢¢¢¢¢¢
¢¢¢¢¢¢
¢¢¢¢¢¢
¢¢¢¢¢¢
;;
;;
QQ
QQ
¢¢
¢¢
;;;;;;;;;
;;;;;;;;;
;;;;;;;;;
QQQQQQQQQ
QQQQQQQQQ
QQQQQQQQQ
¢¢¢¢¢¢¢¢¢
¢¢¢¢¢¢¢¢¢
¢¢¢¢¢¢¢¢¢
Shown with optional cabinet
mantel and hearth base
accessories.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
2
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 4
UNPACKING ............................................................................... 4
PRODUCT FEATURES .............................................................. 4
AIR FOR COMBUSTION AND VENTILATION ........................... 4
INSTALLATION ........................................................................... 7
OPERATING FIREPLACE ........................................................ 18
INSPECTING BURNERS.......................................................... 20
CLEANING AND MAINTENANCE ............................................ 21
SAFETY INFORMATION
DANGER: Carbon monoxide poisoning may lead
to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoning resemble the flu, with headaches, dizziness, or nausea.
If you have these signs, the heater may not be working properly.
Get fresh air at once! Have heater 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
helpsyoudetectagasleak.However,theodoraddedtothegascan
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 heater.
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or ser-
vicethis heater.Improperuse ofthis heatercan cause
serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
WARNING:Anychangetothisheateroritscontrols
can be dangerous.
WARNING: Do not use a blower insert, heat
exchanger insert, or other accessory not approved
for use with this heater.
WARNING:Do notallow fanstoblow directlyinto
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.
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Donotplaceclothingorotherflammablematerialon
or near the appliance. Never place any objects on
the heater.
Fireplace and screen become very hot when running
fireplace. Keep children and adults away from hot
surfaces to avoid burns or clothing ignition. Fire-
placewill remainhot fora timeafter shutdown.Allow
surfaces to cool before touching.
Carefully supervise young children when they are in
the room with fireplace. When using the optional
hand-heldremoteaccessory,keep selectorswitchin
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 heater.
TABLE OF CONTENTS
SAFETY INFORMATION
WIRING DIAGRAM ................................................................... 22
SPECIFICATIONS .................................................................... 22
TROUBLESHOOTING .............................................................. 23
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ...... 26
ACCESSORIES ........................................................................ 34
REPLACEMENT PARTS .......................................................... 36
TECHNICAL SERVICE ............................................................. 36
SERVICE HINTS....................................................................... 36
OWNER'S REGISTRATION FORM .......................................... 37
WARRANTY INFORMATION...................................... Back Cover
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
3
3
SAFETY INFORMATION
Continued
PRODUCT IDENTIFICATION
Figure 2 - Fireplace (VYGF33PRB Shown)
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. Lo-
catepropane/LP supply tank(s) outdoors(propane/LPunitsonly).
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,or rock wool.Using these 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 creationofsoot, follow theinstructions inClean-
ing and Maintenance, pages 21 and 22.
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
shutoff system. The ODS shuts down the fireplace if enough
fresh air is not available. See Air for Combustion and Ventila-
tion, pages 4 through 6. If fireplace keeps shutting off, see
Troubleshooting, pages 23 through 25.
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.
SAFETY INFORMATION
PRODUCT IDENTIFICATION
Figure 1 - Log Base Assembly (VYGF33PRB Shown)
AUTO
ON
OFF
COOLER
WARMER
TEMP
O
F
F
P
I
L
O
T
O
N
H
I
L
O
One Piece
Log Set
Remote Selector
Switch (Optional)
Piezo Ignitor
Optional
Remote
Control
Control
Knobs
Top Louver
Assembly
Firebox
Hood
Bottom
Louver
Assembly
Screen
Assembly
Top Outer
Casing
Firebox
Support
Blower
Assembly
(Optional)
15. Operating fireplace above elevations of 4,500 feet could cause
pilot outage.
16. To prevent performance problems in propane/LP units, do not
use propane/LP fuel tanks of less than 100 lbs. capacity (pro-
pane/LP units only).
17. Provide adequate clearances around air openings.
Keepthe applianceareaclear andfree fromcombus-
tiblematerials,gasoline,andotherflammablevapors
and liquids.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
4
LOCAL CODES
Install and use fireplace with care. Follow all local codes. In the
absence of local codes, use the latest edition of The National Fuel
Gas Code 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
Note: Where listed vented decorative logs are required, thermostat
operation is not permitted.
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 all itemsfor anyshippingdamage. If damaged,promptly
inform dealer where you bought fireplace.
UNPACKING
CAUTION:Donotremovethedataplatesattached
to the heater base assembly. The data plates contain
important warranty and safety information.
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New mate-
rials,increased insulation, and newconstruction methodshelp reduce
heat loss in homes. Home owners weather strip and caulk around
windowsanddoorstokeepthecoldairoutandthewarmairin.During
heatingmonths,homeownerswanttheirhomesasairtightaspossible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,andfuelburningappliances
drawairfromthehousetooperate.Youmustprovideadequatefresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
WARNING: 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-
tions to insure proper fresh air for this and other
fuel-burning appliances in your home.
LOCAL CODES
UNPACKING
PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
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
generatedbybothrealisticflames.Whenusedwithouttheblower,the
fireplacerequiresnoelectricitymakingitidealforemergencybackup
heat.Thisheaterisdesignedforvent-freeoperation.Ithasbeentested
and approved to ANSI Z21.11.2 standard for unvented heaters. State
and local codes in some areas prohibit the use of vent-free heaters.
SAFETY DEVICE
Thisfireplacehasa pilot with anOxygen Depletion Sensing (ODS)
safety shutoff system. The ODS/pilot is a required feature for vent-
free room heaters. The ODS/pilot 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.
OPTIONAL REMOTE CONTROL UNITS
There are four optional remote controls that can be purchased
separately for this log heater:
• wall switch
• wall thermostat
• hand-held ON/OFF remote
• hand-held thermostat remote
See Accessories, pages 34 and 35.
OPTIONAL BLOWER ASSEMBLY (GA3700
SERIES & GA3700TA SERIES)
This fireplace accepts an optional blower assembly (not included).
The GA3700TA Series blower operates thermostatically and fea-
tures a variable speed control. The GA3700 Series blower operates
manually and also features a variable speed control. The blower
circulates heated air from the fireplace into the room. See Accesso-
ries, pages 34 and 35.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
5
5
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 4 through 6 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.
Unusually tight construction is defined as construction
where:
a. walls andceilingsexposedto the outsideatmosphere
have a continuous water vapor retarder with a rating
of one perm (6 x 10-11 kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been added on openable win-
dows and doors and
c. caulking or sealants are applied to areas such as
joints around window and door frames,between sole
platesandfloors,betweenwall-ceilingjoints,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 6 .
Ifyour homedoesnot meetall ofthe threecriteriaabove,
proceed to Determining Fresh-Air Flow For Heater Loca-
tion, column 2.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a
confined space as a space whose volume is less than 50 cubic feet
per 1,000 Btu per hour (4.8 m3per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as
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
furnishedwithdoors, are considered a part of the unconfined space.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
AIR FOR COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR
HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Usethiswork sheettodetermine ifyou have aconfined orunconfinedspace.
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 16 ft. (width) x 8 ft. (ceiling
height) = 2560 cu. ft. (volume of space)
Ifadditionalventilation toadjoiningroom issuppliedwith grillsoropen-
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: 3,168 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)
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation
Determining Fresh-Air Flow for Heater Location
40,000
33,000
73,000

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
6
AIR FOR COMBUSTION AND
VENTILATION
Continued
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 2). You can also remove door into
adjoining room (see option 3, Figure 2). Follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
Ventilation Air From Outdoors
Provideextrafreshairbyusingventilationgrillsorducts. Youmust
provide two permanent openings: one within 12" of the ceiling and
one within 12" of the floor. Connect these items directly to the
outdoorsorspacesopen totheoutdoors. 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: Do not provide openings for inlet or outlet air into
attic if attic has a thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.
AIR FOR COMBUSTION AND VENTILATION
Determining Fresh-Air Flow for Heater Location (Cont.)
Ventilation Air
Figure 4 - Ventilation Air from Outdoors (FPVF33PRA Shown)
Figure 3 - Ventilation Air from Inside Building (FPVF33PRA
Shown)
Outlet
Air Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
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 .
The space in the example on page 5 is a confined space because the actual
Btu/Hr used is more than the maximum Btu/Hr the space can support. You
must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the
extra space provides an unconfined space, remove door to adjoining
roomor add ventilationgrills between rooms.See VentilationAir From
Inside Building.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors.
C. Installa lower Btu/Hrheater,if lowerBtu/Hr sizemakesroom unconfined.
Iftheactual Btu/Hrused is lessthan themaximumBtu/Hr thespace can support,
thespaceisanunconfinedspace.Youwillneednoadditionalfreshairventilation.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
7
7
INSTALLATION
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.
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 heater
•in high traffic areas
•in windy or drafty areas
CAUTION: This fireplace creates warm air cur-
rents.Thesecurrentsmoveheattowallsurfacesnext
to fireplace. Installing fireplace next to vinyl or cloth
wall coverings or operating heater where impurities
(suchas,butnotlimited, totobaccosmoke,aromatic
candles, cleaning fluids, oil or kerosene lamps, etc.)
in the air exist, may discolor walls or cause odors.
INSTALLATION
Check Gas Type
Electrical Hookup
Installing Hood
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 10 and 11.
IMPORTANT: Vent-freeheaters add moisture 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 4 through 6.
IMPORTANT: Make sure the fireplace is level. If fireplace is not
level, log set will not work properly.
Figure 5 - Installing Hood to Firebox
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for your fireplace.
If your gas supply is not correct, do not install fireplace. Call dealer
where you bought fireplace for proper type fireplace.
ELECTRICAL HOOKUP
(Models GA3700 Series and GA3700T Series
Blower Accessories, and GA3555 Internal
Duplex Kit)
This fireplace accepts a blower assembly with an electrical cord.
The electrical cord is five feet in length. You must locate fireplace
withinreachofa120voltgroundedelectricaloutlet.Ifnot,youmust
installan electricaloutlet withinreach of fireplacepower cord. The
GA3555 outlet accessory is used for built-in applications with
blower accessory installed.
INSTALLING HOOD
Install hood to top of firebox as shown in Figure 5. Use 3 Phillips
screws provided.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
8
INSTALLATION
Continued
INSTALLATION
Assembling and Attaching Optional Brass Trim
Installation Clearances
Figure7-AttachingBrassTrimtoFireplace(VYGF33PRBShown)
Figure 6 - Assembling Brass Trim
ASSEMBLING AND ATTACHING OPTIONAL
BRASS TRIM
(Included with Mantel Accessory)
IMPORTANT: If you are recessing the firebox in a wall, do not
attach brass trim at this time. See page 10.
Note: Theinstructions below show assemblingandattaching 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 6.
4. Slide one end of adjusting plate/shim in slot on mitered edge
of top brass trim (see Figure 6).
5. Slide other end of adjusting plate/shim in slot on mitered edge
of side brass trim (see Figure 6).
6. While firmly holding edges of brass trim together, tighten both
set screws on the adjusting plate with slotted screwdriver.
7. Repeat steps 1 through 6 for other side.
8. Tighten trim hanging screws (#10 x 6.25 shoulder) into holes
in cabinets. 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, sliding
hanging notches over hanging screws.
Side Brass
Trim
Top
Brass
Trim
Slot
Mitered Edge
Slot
Shim
Set Screws
Adjusting
Plate
Trim
Hanging
Screws
Assembled
Brass Trim
Hanging
Notches
on Trim
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 8.
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
opening (see Figure 8).
B. Clearances from the top of the fireplace opening 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
*
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top Left and Bottom
Right Sides and Rear
42" 16" 0"

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
9
9
INSTALLATION
Continued
INSTALLATION
Conventional Fireplace Installation
Figure 10 - Installing Cabinet Mantel
CONVENTIONAL FIREPLACE INSTALLATION
Conventional installation of this fireplace involves installing fire-
placealongwiththecorner,face,orcabinetmantelwithhearth base
accessories against a wall in your home. Follow the instructions
below to install the fireplace in this manner.
Note: The instructions in this section show installation using the
cabinetmantelandhearthbaseaccessories.Thehearthbaseaccessory
shown is optional for this installation. You can install fireplace and
cabinet mantel directly on the floor. The corner mantel accessory for
models VYGF33NRB or VYGF33PRB can only be paired with the
cornerhearthbase.Ifmountingfireplaceandcabinetorcornermantel
tothefloor,an optional G3005 SeriesSlim Base kit maybe installed.
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 9).
3. Install gas pipingto fireplacelocation.This installation includes
an approved flexible gas line (if allowed by local codes) after
the equipment shutoff valve. The flexible gas line must be the
last item installed on the gas piping. See Installing Gas Piping
to Fireplace Location, pages 12 and 13.
4. Place hearth base accessory against wall at installation location.
Cut an access hole in hearth top to run flexible gas line to fire-
place (see Figure 9). Make sure to locate access hole so cabinet
mantel will cover it when installed. Note: You can secure base to
floorusing woodscrews.Countersinkscrewheads and puttyover.
5. Route flexible gas line through access hole in hearth base.
6. Center cabinet mantel on hearth base (see Figure 10). Make
sure mantel is flush against wall.
7. Break off nailing flanges (see Figure 11) with hammer or pliers.
8. Place cardboard or other protective material on top of hearth
base. Carefully set fireplace on protective material, with back
of fireplace inside mantel opening.
9. Attach flexible gas line from fireplace gas regulator to gas sup-
ply. See Connecting Fireplace to Gas Supply, page 13.
10. If blower is installed, route blower electrical cord through ac-
cess holes in either side of fireplace. Note: Bushing may be
moved if necessary. Plug electrical cord into electrical outlet.
11. Carefully insert fireplace into cabinet mantel. Be careful not
to scratch or damage hearth base, cabinet mantel, or any lami-
nate trim on hearth base (laminate trim for models
VYGF33PRB and VYGF33NRB only). 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, page 14.
Figure 9 - Placing Hearth Base Accessory Against Wall
Electrical Outlet
Hearth
Base
Rigid Gas Line
Gas Line
Access
Hole
Cabinet
Mantel
Figure 11 - Location of Nailing Flanges
Nailing
Flanges
Figure 12 - Inserting Fireplace Into Cabinet Mantel

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
10
INSTALLATION
Continued
INSTALLATION
Built-In Fireplace Installation
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
BUILT-IN FIREPLACE INSTALLATION FOR
MODELS VYGF33PRB & VYGF33NRB
Built-in installation of this fireplace involves installing fireplace
into a framed-in enclosure. This makes the front of fireplace flush
withwall.Ifinstallingamantelabovethefireplace,youmustfollow
theclearances shown inFigure 20,page 12.Followthe instructions
below to install the fireplace 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.
2. If using blower, install and properly ground GA3555, three-
prong 120 volt electrical outlet, in fireplace. Follow instruc-
tions included in kit (see Accessories, pages 34 and 35).
3. Install gas pipingto fireplacelocation.This installation includes
an approved flexible gas line (if allowed by local codes) after
the equipment shutoff valve. The flexible gas line must be the
last item installed on the gas piping. See Installing Gas Piping
to Fireplace Location, pages 12 and 13.
4. Carefully set fireplace in front of rough opening with back of
fireplace inside wall opening.
5. Plug electrical cord into electrical outlet installed in step 2.
6. Carefully insert fireplace into rough opening.
7. Attach flexible gas line to gas supply. See Connecting Fire-
place to Gas Supply, pages 13 and 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 Con-
nections, pages 14 and 15.
10. Install brass trim after final finishing and/or painting of wall
(see Figure 7, page 8).
WARNING: A qualified electrician must connect
electrical wiring to duplex outlet for built-in installa-
tion. Follow all local codes.
BUILT-IN FIREPLACE INSTALLATION FOR
MODELS FPVF33PRA & FPVF33NRA
Built-in installation of this fireplace involves installing fireplace
into a framed-in enclosure. This makes the front of fireplace flush
withwall.Ifinstallingamantelabovethefireplace,youmustfollow
theclearances shown inFigure 20,page 12.Followthe instructions
below to install the fireplace in this manner.
35
1
/ 2 "
17
3
/ 4 "
33"
Figure 13 - Rough Opening for Installing in Wall
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
39
3
/ 8 "27
7
/ 8 "
55
5
/ 8 "
35
1
/ 2 "
Figure 14 - Rough Opening for Installing in Corner (for Models
VYGF33NRB & VYGF33PRB only)
Figure 15 - Attaching Fireplace to Wall Studs (VYGF33PRB
Shown)
Nailing Flanges
Nails or
Wood
Screws

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
11
11
1. Frame in rough opening. Use dimensions shown in Figure 16
for the rough opening.
2. If using blower, install wiring and properly ground the three-
prong, 120 volt electrical outlet in fireplace.
3. Before replacing bottom of firebox, install duplex outlet to the
right support bracket in the bottom of firebox (see Figure 17).
4. Route wires from electrical box through smallest hole in outer
casing using strain relief fitting provided (see Figure 17).
5. Connect wires from the electrical box to duplex outlet. Match
wire colors to those indicated on duplex outlet. Be sure to con-
nect ground wire.
6. Install shield to end of right support bracket and behind the
firebox wrapper with 2 screws provided (see Figure 18).
7. Plug blower cordinto duplex outlet.
Note: On thermostat model
fireplaces, route power cord to the back of the fireplace to clear
thermostat valve.
8. Replace bottom of firebox.
9. Install gas pipingto fireplacelocation.This installation includes
an approved flexible gas line (if allowed by local codes) after
the equipment shutoff valve. The flexible gas line must be the
last item installed on the gas piping. See Installing Gas Piping
to Fireplace Location, pages 12 and 13.
10. Carefully set fireplace in front of rough opening with back of
fireplace inside wall opening.
11. Attach flexible gas line to gas supply. See Connecting Fire-
place to Gas Supply, pages 13 and 14.
12. Plug electrical cord into electrical outlet installed in step 2.
13. Carefully insert fireplace into rough opening.
14. Attach fireplace to wall studs using nails or wood screws
through holes in nailing flange (see Figure 19).
15. Check all gas connections for leaks. See Checking Gas Con-
nections, pages 14 and 15.
16. Install brass trim after final finishing and/or painting of wall
(see Figure 7, page 8).
INSTALLATION
Continued
Blower
Support
Bracket
Cable from
Electrical
Source
Duplex
Outlet
Screw
Blower
Power
Cord Strain
Relief
Fitting
Figure 17 - Connecting Duplex Outlet
35
1
/ 2 "
17
3
/ 4 "
33"
Figure 16 - Rough Opening for Installing in Wall Figure 19 - Attaching Fireplace to Wall Studs (FPVF33PRA
Shown)
Nailing Flanges
Nails or
Wood
Screws
Shield
Screws
Support Bracket
Firebox
Wrapper
Power
Cord
Figure 18 - Attaching Fireplace to Wall Studs (FPVF33PRA
Shown)
INSTALLATION
Built-In Fireplace Installation (Cont.)

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
12
WARNING: This appliance requires a 1/2" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
WARNING: A qualified service person must con-
nect fireplace to gas supply. Follow all local codes.
CAUTION: Never connect propane/LP fireplace
directly to the propane/LP supply. This fireplace
requires an external regulator (not supplied). Install
the external regulator between the fireplace and pro-
pane/LP supply.
WARNING:Neverconnectnaturalgasfireplaceto
private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
INSTALLATION
Continued
INSTALLATION
Built-In Installation Fireplace Installation (Cont.)
Installing Gas Piping to Fireplace Location
Mantel Clearances for Built-In Installation
Ifplacing mantel above built-infireplace,you must meet minimum
clearance between mantel shelf and top of fireplace opening.
Figure 20 - 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
INSTALLING GAS PIPING TO FIREPLACE
LOCATION
Installation Items Needed
Beforeinstallingfireplace,makesureyouhavetheitemslistedbelow.
• externalregulator for propane/LPunit only(suppliedby installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap (optional)
• 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, pages 34 and 35.
For propane/LP units, the installer must supply an external regula-
tor. The external regulator will reduce incoming gas pressure. You
must reduce incoming gas pressure to between 11 and 14 inches of
water. If you do not reduce incoming gas pressure, heater regulator
damage could occur. Install external regulator with the vent point-
ing down as shown in Figure 21, page 13. Pointing the vent down
protects it from freezing rain or sleet.
NOTICE: If your installation does not meet the mini-
mum clearances shown, you must do one of the
following:
•raise the mantel to an acceptable height
•remove the mantel
NOTICE:Surface temperaturesofadjacentwallsand
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.

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
13
13
INSTALLATION
Installing Gas Piping to Fireplace Location (Cont.)
Connecting Fireplace to Gas Supply
Figure 22 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, pages 34 and 35.
** Minimum inlet pressure for purpose of input adjustment.
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 22).
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.
WARNING: Usepipe jointsealantthatisresistant
to liquid petroleum (LP) gas.
We recommend that you install a sediment trap in supply line as
showninFigure22.Locatesedimenttrapwhereitiswithinreachfor
cleaning.Installinpipingsystembetweenfuelsupplyandfireplace.
Locatesediment trap wheretrapped matter isnot likelyto 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.
Sediment Trap
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPT Tap*
3" Minimum
Cap Pipe Tee
Nipple Joint
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)
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not provided)
1. Remove fireplace screen. Remove two screws that hold 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. Remove screws that attach log base assembly to fireplace (see
Figure 23, page 14). Carefully lift up log base assembly and
remove from fireplace (see Figure 23, page 14).
Note: If adding the G8000A series brick liner accessory, install it
now. Follow instructions in G8000A accessory kit.
CONNECTING FIREPLACE TO GAS SUPPLY
CAUTION: Do not pick up log base assembly by
burner.Thiscould damageburner. Only handlebase
by grates.
3. Route gas line (provided by installer) from equipment shutoff
valve to fireplace. Route flexible gas supply line through one
of the access holes.
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.
Figure21-ExternalRegulatoron Propane/LP Supply Tank with
Vent Pointing Down
External
Regulator
Vent
Pointing
Down
Propane/LP
Supply Tank
INSTALLATION
Continued

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
14
INSTALLATION
Continued
Figure 23 - Removing Log Base Assembly From Fireplace
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
Figure24). Theflexiblegas supplyline connectionto
the equipment shutoff valve should be accessible.
INSTALLATION
Connecting Fireplace to Gas Supply (Cont.)
Checking Gas Connections
➞
➞
Figure 24 - Attaching Flexible Gas Lines Together
4. Attach the flexiblegasline to gassupply(see Figure 24).Check
tightness of flexible gas line attached to gas regulator of fire-
place (see Figure 24).
5. Check all gas connections for leaks. See Checking Gas Con-
nections.
6. Replace log base assembly back into fireplace. Feed flexible gas
lineintofireplacebaseareawhilereplacinglogbaseassembly.Make
sure the entire flexible gas line is in fireplace base area. Reattach
log base assembly to fireplace with screws removed in step 2.
Flexible Gas Line from
Fireplace Gas Regulator
To Fireplace
Gas Regulator Equipment Shutoff Valve
Provided by Installer
Propane/LP
To External
Regulator
Natural Gas
To Gas Meter
WARNING: Test all gas piping and connections,
internal andexternal tounit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING:Never useanopenflameto checkfor
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
CAUTION:Makesureexternal regulatorhasbeen
installed between propane/LP supply and fireplace.
See guidelines under Connecting Fireplace to Gas
Supply , page 13.
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 (con-
trol valve) and equipment shutoff valve from gas supply pip-
ing system. Pressures in excess of 1/2 psig will damage fire-
place 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 for propane/LPgas oropening maingas valve
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.
CHECKING GAS CONNECTIONS

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
15
15
CAUTION:Donotremovethedataplatesattached
to the heater base assembly. The data plates contain
important warranty and safety information.
WARNING: Failure to position the parts in accor-
dance with these diagrams or failure to use only parts
specifically approved with this heater may result in
property damage or personal injury.
WARNING: After installation and periodically
thereafter, check to ensure that no flame comes in
contact with any log. With the heater set to High,
checkto seeif flamecontactanylog.If so,reposition
logs according to the log installation instructions in
this manual. Flames contacting logs will create soot.
INSTALLATION
Checking Gas Connections (Cont.)
Installing Logs
INSTALLING LOGS
INSTALLATION
Continued
Figure 25 - Equipment Shutoff Valve
ON
POSITION
OFF
POSITION
Open
Closed
Equipment
Shutoff
Valve
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 25).
2. Pressurize supply piping system by either opening propane/LP
supplytank valve for propane/LPgas oropening maingas valve
located on or near gas meter for natural gas, or using com-
pressed air.
3. Check all joints from gas meter to equipment shutoff valve for
natural gas or propane/LP supply to equipment shutoff valve
for propane/LP (see Figures 26 or 27). Apply noncorrosive
leak detection fluid to all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 25).
2. Open main gas valve located on or near gas meter for natural
gas or open propane/LP supply tank valve.
3. Make sure control knob of fireplace is in the OFF position.
4. Check all joints from equipment shutoff valve to gas control
valve (see Figures 26 or 27). Apply noncorrosive leak detec-
tion fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, pages 18 through 20.
Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas toAppliance, page 19).
Figure 27 - Checking Gas Joints for Propane/LP
Propane/LP
Supply
Tank
Equipment
Shutoff Valve
Gas Control Valve
Gas Meter
Figure 26 - Checking Gas Joints for Natural Gas
Gas Control Valve
Equipment
Shutoff
Valve

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
16
INSTALLATION
Continued
It is very important to install the logs exactly as instructed. Do not
modify logs. Only use logs supplied with fireplace.
1. For models VYGF33PRB andVYGF33NRB, place one-piece
log set on grate to fit as illustrated in Figure 28. For models
FPVF33PRA and FPVF33NRA, place one-piece log set on
grate to fit as illustrated in Figure 29. Make sure middle sec-
tion at bottom of log set is seated into "U"-shaped cutout in
center of chassis (see Figure 29).
IMPORTANT: Make sure
log does not cover any burner ports (see Figures 30 and 31).
2. Install fireplace screen by slipping notches of fireplace screen
over screws on front of fireplace (see Figure 32).
WARNING: You must operate this fireplace with
the fireplace screen in place. Make sure fireplace
screen is in place before running fireplace.
Figure28-InstallingOne Piece Log Set (ModelsVYGF33NRB &
VYGF33PRB)
Figure 30 - Installing One Piece Log Set (Top View Models
VYGF33NRB & VYGF33PRB)
Notches
Figure 32 - Installing Fireplace Screen (Model VYGF33NRB
shown)
Screws for
Mounting Screen
One Piece
Log Set
Burner Ports
INSTALLATION
Installing Logs
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Chassis "U"-shaped
Cutout in
Chassis
One Piece
Log Set
Burner
Middle
Section at
Bottom of
Log Set
Figure 29 - Installing One Piece Log Set (Models FPVF33NRA &
FPVF33PRA)
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Chassis "U"-shaped
Cutout in
Chassis
One
Piece
Log Set
Burner
Middle Section
at Bottom of
Log Set
Figure 31 - Installing One Piece Log Set (Top View Models
FPVF33NRA & FPVF33PRA)
One Piece
Log Set
Burner Ports

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
17
17
INSTALLATION
Optional Wireless Hand-Held Remote Control Accessories
Installing 9-Volt Batteries
INSTALLATION
Continued
OPTIONAL WIRELESS HAND-HELD REMOTE
CONTROL ACCESSORIES (GHRC and
GHRCTA Series)
Installing Remote Receiver Unit
1. Disconnect switch wires from the control valve.
2. Remove screws attaching switchplate.
3. Remove switch plate (see Figure 33). Discard after removing.
4. Install remote receiver unit onto gas log heater base using
mounting clips.
5. Push clips firmly into place (see Figure 34).
6. Connect wires as shown in Figure 35.
Figure 33 - Switch Plate and Wiring Harness Figure 36 - Installing Battery in Remote Receiver
Figure 34 - Installing Remote Receiver
Installing 9-Volt Battery in Hand-Held Remote
Control Unit
1. Remove battery cover on back of remote control unit.
2. Attach terminal wires to the battery. Place battery into the bat-
tery housing.
3. Replace battery cover onto remote control unit.
Valve
White Wire
From
Receiver
INSTALLING 9-VOLT BATTERIES
Two 9-volt batteries (not included) are required to operate this
heater with the wireless hand held remote control set. Install one
batteryin the receiverand one inthe hand-heldremote control unit.
Note: Only use alkaline batteries.
Installing 9-Volt Battery in Receiver
1. Locate back of receiver under front burner of heater.
2. Locate the battery clip mounted on the back of the receiver.
3. Slide a 9-volt battery through the clip.
4. Attach the terminal wires to the battery.
Battery Clip
9-Volt Battery
Terminal
Wires
Remote
Receiver
Screw
Switch Plate Wires
Remote
Switch
Bracket
Ignitor
Remote Receiver
Mounting
Clips
Figure 35 - Connecting Wires
Red Wire From
Receiver
Model
GHRCTA
Figure 37 - Installing Battery in Hand-Held Remote Control Unit
Battery
Cover
Terminal
Wires Remote
Control Unit
9-Volt
Battery Battery
Housing
Model
GHRC

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
18
O
F
F
P
I
L
O
T
O
N
L
O
I
H
AUTO
OFF
ON
WARNING: You must operate this fireplace with
the fireplace screen in place. Make sure fireplace
screen is installed before running fireplace.
NOTICE: During initial operation of new fireplace,
burning logs will give off a paper-burning smell.
Open damper or window to vent smell. This will only
last a few hours.
1. STOP! Read the safety information above.
2. Make sure equipment shutoff valve is fully open.
3. Set selector switch in OFF position.
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. Useonlyyourhand to push in orturn thegas 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 techni-
cian or gas supplier. Force or attempted repair may result
in a fire or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been under water.
WARNING:Ifyou donotfollowtheseinstructions
exactly, a fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
FOR YOUR SAFETY
READ BEFORE LIGHTING
OPERATING FIREPLACE
WARNING: Burner will come on automatically
within one minute when the selector switch is in the
ON position after the pilot is lit.
Figure38-ControlKnobandIgnitorButtonLocation(Shownas
Supplied, No Control Options)
Control Knob
Ignitor Button
Selector Switch
Flame Adjustment
Knob
4. Press in and turn control knob clockwise to the
OFF position.
5. Wait five (5) minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP! Fol-
low “B” in the safety information, column 1. If you don’t
smell gas, go to the next step.
6. Press in and turn control knob counterclockwise
to the PILOT position. Press in control knob for five (5)
seconds (see Figure 38).
Note: You may be running this heater for the first time
after hooking up to gas supply. If so, the control knob may
need to be pressed in for 30 seconds or more. This will al-
low air to bleed from the gas system.
7. With control knob pressed in, press and release ignitor but-
ton. This will light pilot. The pilot is attached to the front
burner.Ifneeded,keeppressingignitorbuttonuntilpilotlights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
lightpilot with match.To lightpilotwith match, seeManual
Lighting Procedure on page 19.
8. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob.
• If control knob does not pop out when released, contact
a qualified service person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4 through 8.
9. Slightly push in and turn control knob counterclockwise
to the ON position.
10. Wait oneminute andswitch selectorswitch tothe ONposi-
tion to light burner.
11. Set flame adjustment knob to any level between HI and LO.
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
LIGHTING
INSTRUCTIONS
OPERATING FIREPLACE
For Your Safety Read Before Lighting
Lighting Instructions

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
19
19
WARNING:Makesuretheselectorswitchisinthe
OFF position when you are away from home for long
periodsoftime. Fireplacewill come onautomatically
with selector switch in the ON position.
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Fireplace
1. Turn control knob clockwise to the OFF position.
2a. Set selector switch in the OFF position.
2b. If Using OptionalHand-Held Remote:Setselectorswitch
in the OFF position to keep from draining the battery.
Shutting Off Burner Only (pilot stays lit)
You may shut off the burner and keep the pilot lit by doing one
of the following:
• Turn control knob clockwise to the PILOT position.
• Use remote control manual OFF button.
• Set selector switch in the OFF position.
MANUAL LIGHTING
PROCEDURE
1. Followsteps1through6underLightingInstructions,page18.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
steps 9 through 11 under Lighting Instructions, page 18.
Figure 39 - Pilot (Propane/LP)
Ignitor
Electrode
Pilot Burner
OPERATING FIREPLACE
Continued
OPTIONAL REMOTE
OPERATION
Note: All remote control accessories must be purchased sepa-
rately (see Accessories, pages 34 and 35). Follow instructions
included with the remote control.
Thermostat Control Operation
(Optional GHRCTA Series Only) The thermostat control set-
ting on the remote control unit can be set to any comfort level
between WARMER and COOLER. The burner will turn on
and off automatically to maintain the comfort level you select.
The ideal comfort setting will vary by household depending
upontheamountofspace tobe heated, theoutput ofthecentral
heating system, etc.
Forwallthermostatoperation,followinstructionsuppliedwith
thermostat accessory GWMT1. For wall switch operation fol-
low instructions supplied with GWMS2.
1. After lighting, let pilot flame burn for about one minute.
Turn control knob to ON position.Adjust flame adjustment
knobanywherebetweenHIandLO.Slidetheselectorswitch
to the REMOTE position (see Figure 41). Note: The burner
may light if hand-held remote ON button was on when se-
lectorswitchwaslastturnedoff.Youcannowturntheburner
on and off with the hand-held remote control unit.
IMPORTANT: Do not leave the selector switch in the RE-
MOTE position when the pilot is not lit.This will drain the
battery.
IMPORTANT: Be sureto press theON/OFF buttons onthe
hand-heldremotecontrolunit forup to 3 seconds toassure
proper operation.
NOTICE: You must light the pilot before using the
hand-held remote control unit. See Lighting Instruc-
tions on page 18.
O
F
F
P
I
L
O
T
O
N
L
O
I
H
ON
OFF
REMOTE
Figure 41 - Setting the Selector Switch, Control Knob, and
Flame Adjustment Knob for Remote Operation
Selector Switch in Remote Position
(Optional Remote Control)
Control Knob in
On Position
Flame Adjustment Knob
Figure 40 - Pilot (Natural)
Pilot Burner Ignitor
Electrode
OPERATING FIREPLACE
Lighting Instructions (Cont.)
To Turn Gas Off To Appliance
Manual Lighting Procedure
Optional Remote Operation

110148-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
20
Figure 43 - Correct Pilot Flame Pattern
Figure 44 - Incorrect Pilot Flame Pattern
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 43 shows a correct pilot flame pattern. Figure 44 shows an
incorrect pilot flame pattern. The incorrect pilot flame is not
properly heating the thermocouple. When the thermocouple cools,
the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 44
• turn heater off (see To Turn Off Gas to Appliance, page 19)
• see Troubleshooting, pages 23 through 25
Note: The pilot flameonanaturalgasunits will have aslightcurve,
but flame should be blue and have no yellow or orange color.
INSPECTING BURNERS
Pilot Burner Thermocouple
Thermocouple
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
OPERATING FIREPLACE
Optional Remote Operation (Cont.)
Optional Blower Operation
INSPECTING BURNERS
Pilot Flame Pattern
GHRC Series Operation:
2a. Press the ON/OFF button to turn the burner on and off.
When turning burner off, the pilot will remain lit.
GHRCTA Series Operation:
2b. Press theAUTO/ON/OFF button on the hand-held remote
control (see Figure 42). The lights to the left of the button
will showAUTO, ON, or OFF.
• In the ON mode, the burner will ignite. The heater is in
manual mode when ON is lit.
• In theAUTO mode, the thermostat in the hand-held re-
moteunit controlsthe room temperature.To increase the
roomtemperature,pressthe toparrowof theTEMPbut-
ton. To lower the room temperature, press the bottom
arrow of the TEMP button.At higher settings the heater
will run longer.
IMPORTANT: This remote controlhas beenspeciallyen-
gineeredtotakean airtemperaturesample everyminute
in the auto mode. It will not respond immediately to the
temperature setting being turned up or down.
IMPORTANT: The hand-held remote control unit must
be near the fireplace. Do not keep the hand-held remote
control unit too close to the fireplace.The thermostat on
thehand-heldremotecontrolunit willheatuptoo quickly
and turn the fireplace off.
3. To turn the burner off, press the AUTO/ON/OFF button
until OFF lights. The pilot will remain lit.
IMPORTANT: To turn the pilot off, manually turn the con-
trol knob on the fireplace to the OFF position.
OPERATING FIREPLACE
Continued
Locate the blower switch by opening lower louver on fireplace.
Blower switch is located at lower right inside louver door.
The GA3700T Series thermostat-controlled blower has a vari-
able speed control with an ON/OFF switch. The blower will
startwhenthethermostatsenses asufficient increase infirebox
temperature. The GA3700 variable speed blower also has an
ON/OFF switch built into the variable speed control.
Note for GA3700T Series Only: If you are using GA3700T
blower,yourfireplaceandblowerwillnotturnonandoffatthe
sametime.Thefireplacemayrunforseveralminutesbeforethe
blowerturnson.Aftertheheatermodulatestothepilotposition,
theblowerwillcontinuetorun.Theblowerwillshutoffafterthe
firebox temperature decreases.
Note: Itissafetooperatefireplacewithblowerturnedoff.However,
the blower helps distribute heated air from the fireplace.
Followinstallationinstructionsincludedwiththebloweraccessory.
OPTIONAL BLOWER
OPERATION
Figure 42 - Thermostat Hand-Held Remote Control Unit
Selections (GHRCTA Series Only)
Shows Temperature
Setting
Increases Room
Temperature in
AUTO Mode
Decreases Room
Temperature in
AUTO Mode
Turns Burner On or
Off and Allows You
to Choose the Auto
Setting
The Log Heater will
Automatically Cycle
between Pilot and
the Heat Setting that
has been Selected
Pilot Burner
Natural Gas PilotPropane/LP Gas Pilot
Natural Gas PilotPropane/LP Gas Pilot