Desa INTERNATIONAL UNVENTED (VENT-FREE) GAS LOG... Quick start guide

INTERNATIONAL
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
Remote-Ready Models Also Design-Certified As Vented
Decorative Appliances
Save this manual for future reference.
Save this manual for future reference.
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury, or loss of life.
— Do not store or use gasoline or other
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 qualified installer, service agency, or
the gas supplier.
WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage. Refer
to this manual for correct installation and
operational procedures. For assistance or
additional information consult a qualified
installer, service agency, or the gas supplier.
WARNING: This appliance is for installa-
tion only in a solid-fuel burning masonry or
UL127 factory-built fireplace, or in an ap-
proved ventless firebox. It is design-certi-
fied for these installations in accordance
with ANSI Z21.11.2. Exception: Do not in-
stall this appliance in a factory-built fire-
place that includes instructions stating it
has not been tested or should not be used
with unvented gas logs. For unmarked fac-
tory-built fireplaces, contact fireplace manu-
facturer if unsure of this application.
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 5 of this manual.
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This appliance may be installed in an aftermarket,* manufactured (mobile) home, where not
prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance
is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
24" and 30"Remote-Ready
24" and 30" Thermostat-
Controlled

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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
helps you detect a gas leak. However, the odor added to the gas can
fade. Gas may be present even though no odor exists.
Make certain you read and understand all warnings. Keep this manual
for reference. It is your guide to safe and proper operation of this heater.
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or ser-
vice this heater. Improper use of this heater can cause
property damage and serious injury or death from
burns, fire, explosion, electrical shock, and carbon
monoxide poisoning.
WARNING: Any change to this heater or its con-
trols can be dangerous.
WARNING: Do not use a blower insert, heat
exchanger insert, or other accessory not approved
for use with this heater.
WARNING: This appliance is for installation only
in a solid-fuel burning fireplace or approved ventless
firebox enclosure.
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.
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Do not place clothing or other flammable material on
or near the appliance. Never place any objects on
the heater.
Heater base assembly becomes very hot when run-
ning heater. Keep children and adults away from hot
surface to avoid burns or clothing ignition. Heater
will remain hot for a time after shutdown. Allow
surface to cool before touching.
Carefully supervise young children when they are in
the room with heater. When using the hand-held
remote accessory (Remote-Ready Models Only), keep
selector switch in the OFF position to prevent chil-
dren from turning on burners with remote.
You must operate this heater with a fireplace screen
in place. Make sure fireplace screen is closed before
running heater.
Keep the appliance area clear and free from combus-
tible materials, gasoline, and other flammable vapors
and liquids.
TABLE OF CONTENTS
SAFETY INFORMATION
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 4
OPTIONAL REMOTE CONTROL ACCESSORIES .................... 4
LOCAL CODES ........................................................................... 4
UNPACKING ............................................................................... 4
PRODUCT FEATURES .............................................................. 5
AIR FOR COMBUSTION AND VENTILATION ........................... 5
INSTALLATION ........................................................................... 8
OPERATING HEATER .............................................................. 18
INSPECTING BURNERS.......................................................... 23
CLEANING AND MAINTENANCE ............................................ 24
TROUBLESHOOTING .............................................................. 25
OPTIONAL POSITIONING OF
THERMOSTAT SENSING BULB ........................................... 28
SPECIFICATIONS .................................................................... 29
WIRING DIAGRAM ................................................................... 29
SERVICE HINTS....................................................................... 29
TECHNICAL SERVICE ............................................................. 29
ILLUSTRATED PARTS BREAKDOWN
AND PARTS LIST ................................................................ 30
REPLACEMENT PARTS .......................................................... 38
ACCESSORIES ........................................................................ 38
OWNER'S REGISTRATION FORM .......................................... 39

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3
SAFETY INFORMATION
Continued
1. This appliance is only for use with the type of gas indicated on
the rating plate. This appliance is not convertible for use with
other gases.
2. Do not place propane/LP supply tank(s) inside any structure.
Locate propane/LP supply tank(s) outdoors.
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use any phone in
your building
• immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions
• if you cannot reach your gas supplier, call the fire department
4. This heater shall not be installed in a bedroom or bathroom,
unless installed as a vented appliance. See Installing Damper
Clamp Accessory for Vented Operation, page 11 (Remote-
Ready Models Only).
5. Before installing in a solid fuel burning fireplace, the chimney
flue and firebox must be cleaned of soot, creosote, ashes and
loose paint by a qualified chimney cleaner. Creosote will ig-
nite if highly heated. Inspect chimney flue for damage. If dam-
aged, repair flue damper before operating heater.
6. If fireplace has glass doors, never operate this heater with glass
doors closed. If you operate heater with doors closed, heat
buildup inside fireplace will cause glass to burst. Also, if fire-
place opening has vents at the bottom, you must open the vents
before operating heater.
7. To prevent the creation of soot, follow the instructions in Clean-
ing and Maintenance, page 24.
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 and furniture.
9. This heater needs fresh, outside air ventilation to run properly.
This heater has an Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the heater if enough fresh
air is not available. See Air for Combustion and Ventilation,
pages 5 through 7. If heater keeps shutting off, see Trouble-
shooting, pages 25 through 27.
10. Do not run heater
• where flammable liquids or vapors are used or stored
• under dusty conditions
11. Do not use this heater to cook food or burn paper or any other
type of sold fuels.
12. Do not use heater if any part has been exposed to or under
water. Immediately call a qualified service technician to in-
spect the room heater and to replace any part of the control
system and any gas control which has been under water.
13. Do not operate heater if any log is broken. Do not operate heater
if a log is chipped (dime-sized or larger).
14. Turn heater off and let cool before servicing, installing, or re-
pairing. Make sure the selector switch is in the OFF position
(Remote-Ready Models Only). Only a qualified service per-
son should install, service, or repair heater.
15. Make sure the selector switch is in the OFF position when you
are away from home for long periods of time (Remote-Ready
Models Only).
16. Remote-ready heaters do not need to be connected to any ex-
ternal electrical source.
17. Operating heater above elevations of 4,500 feet may cause pi-
lot outage.
18. To prevent performance problems with propane/LP models,
do not use propane/LP fuel tank of less than 100 lb. capacity.
19. Provide adequate clearances around air openings.
SAFETY INFORMATION

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LOCAL CODES
Install and use heater 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. Remove logs and heater base assembly from carton. Note: Do
not pick up heater base assembly by burners. This could damage
heater. Always handle base assembly by the sides of assembly.
2. Remove all protective packaging applied to logs and heater
for shipment.
3. Check all items for any shipping damage. If damaged, promptly
inform dealer where you bought heater.
UNPACKING
CAUTION: Do not remove the metal data plates
from the base assembly. The data plates contain
important warranty and safety information.
OPTIONAL REMOTE
CONTROL ACCESSORIES
There are four optional remote controls that can be purchased
separately for Remote-Ready Models Only:
• wall switch • hand-held ON/OFF remote
• wall thermostat • hand-held thermostat remote.
See Accessories, page 38.
The wall thermostat or hand-held thermostat may not be used where
vented decorative listing is required.
AUTO
ON
OFF
COOLER
WARMER
TEMP
Control
Knob
Base
Assembly
Piezo
Ignitor
Rear Burner
Control Knob
Selector
Switch
(Optional)
Flame
Adjustment
Knob
Remote Control
(Optional)
Base Extension
Grate
Front Burner Base
Extension (30"
Models Only)
Remote-Ready Models: VGX24NR, VGX24PR, VGX30NR, VGX30PR,
CGX3924NR, CGX3924PR, EX24NR, EX24PR, EX30NR and EX30PR
Rear
Burner
Figure 1 - Product Identification
Rear
Burner
Grate Pilot Assembly
Control
Knob
Piezo
Ignitor
Front Burner Base
Assembly
Thermostat Models: LGX3924NT, LGX3924PT
PRODUCT IDENTIFICATION
Log Set (Varies
According to Model)
Base
Assembly
Rear Burner
Control Knob
Piezo
Ignitor Control
Knob
Thermostat Models: VGX24NT, VGX24PT, VGX30NT, VGX30PT,
CGX3924NT, CGX3924PT, CGX3930NT, CGX3930PT
Grate
Pilot
Assembly
PRODUCT IDENTIFICATION
OPTIONAL REMOTE CONTROL ACCESSORIES
LOCAL CODES
UNPACKING

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5
AIR FOR COMBUSTION AND
VENTILATION
Today’s homes are built more energy efficient than ever. New mate-
rials, 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 efficient, 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.
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.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation
classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 5 through 7 will help you classify your
space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough
fresh air for combustion and ventilation. However, in buildings of
unusually tight construction, you must provide additional fresh air.
Unusually tight construction is defined as construction
where:
a. walls and ceilings exposed to the outside atmosphere
have a continuous water vapor retarder with a rating
of one perm (6 x 10-11 kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been added on openable win-
dows and doors and
c. caulking or sealants are applied to areas such as
joints around window and door frames, between sole
plates and floors, between wall-ceiling joints, between
wall panels, at penetrations for plumbing, electrical,
and gas lines, and at other openings.
If your home meets all of the three criteria above,
you must provide additional fresh air. See Ventilation
Air From Outdoors , page 7 .
If your home does not meet all of the three criteria above,
proceed to Determining Fresh-Air Flow For Heater Loca-
tion, page 6.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a
confined space as a space whose volume is less than 50 cubic feet
per 1,000 Btu per hour (4.8 m3per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as
a space whose volume is not less than 50 cubic feet per 1,000 Btu per
hour (4.8 m3per kw) of the aggregate input rating of all appliances
installed in that space. Rooms communicating directly with the
space in which the appliances are installed*, through openings not
furnished with doors, are considered a part of the unconfined space.
* Adjoining rooms are communicating only if there are doorless
passageways or ventilation grills between them.
PRODUCT FEATURES
OPERATION
This heater is clean burning. It requires no outside venting. There is
no heat loss out a vent or up a chimney. Heat is generated by both
realistic flames and glowing coals. This heater is designed for vent-
free operation with flue damper closed. It has been tested 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. This
heater may also be operated as a vented decorative (ANSI Z21.60)
product by opening the flue damper (Remote-Ready Models Only).
SAFETY DEVICE
This heater has a pilot with an Oxygen Depletion Sensing (ODS)
safety shutoff system. The ODS/pilot is a required feature for vent-
free room heaters. The ODS/pilot shuts off the heater if there is not
enough fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system requires no matches,
batteries, or other sources to light heater.
PRODUCT FEATURES
Operation
Safety Device
Piezo Ignition System
AIR FOR COMBUSTION AND VENTILATION
Providing Adequate Ventilation

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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 heater plus any adjoining
rooms with doorless passageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = ___________ cu. ft. (volume of space)
Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling
height) = 2560 cu. ft. (volume of space)
If additional ventilation to adjoining room is supplied with grills or open-
ings, add the volume of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine the maximum Btu/Hr
the space can support.
__________ (volume of space) x 20 = (Maximum Btu/Hr the space
can support)
Example: 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 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: 51,200 Btu/Hr (maximum the space can support)
79,000 Btu/Hr (actual amount of Btu/Hr used)
AIR FOR COMBUSTION AND
VENTILATION
Continued
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, provide adequate combustion and ven-
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 above example is a confined space because the actual Btu/
Hr used is more than the maximum Btu/Hr the space can support. You must
provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the ex-
tra space provides an unconfined space, remove door to adjoining
room or add ventilation grills between rooms. See Ventilation Air From
Inside Building, page 7.
B. Vent room directly to the outdoors. See Ventilation Air From Out-
doors, page 7.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room
unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support,
the space is an unconfined space. You will need no additional fresh air ventilation.
40,000
39,000
79,000
AIR FOR COMBUSTION AND VENTILATION
Determining Fresh-Air Flow For Heater Location

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7
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
Provide extra fresh air by using ventilation grills or ducts. You must
provide two permanent openings: 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-controlled power vent. Heated air
entering the attic will activate the power vent.
AIR FOR COMBUSTION AND VENTILATION
Ventilation Air
Figure 3 - Ventilation Air from Outdoors
Figure 2 - Ventilation Air from Inside Building
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"

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8
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
throughout the house. In the event of a power outage,
you can use this heater as your primary heat source.
WARNING: A qualified service person must in-
stall heater. Follow all local codes.
NOTICE: State or local codes may only allow opera-
tion of this appliance in a vented configuration. Check
your state or local codes.
WARNING: Make sure the selector switch is in the
OFF position before installing heater (Remote-Ready
Models Only).
WARNING: Before installing in a solid fuel burn-
ing fireplace, the chimney flue and firebox must be
cleaned of soot, creosote, ashes and loose paint by
a qualified chimney cleaner. Creosote will ignite if
highly heated. A dirty chimney flue may create and
distribute soot within the house. Inspect chimney
flue for damage. If damaged, repair flue damper
before operating heater.
WARNING: Seal any fresh air vents or ash clean-
out doors located on floor or wall of fireplace. If not,
drafting may cause pilot outage or sooting. Use a
heat-resistant sealant. Do not seal chimney flue
damper.
WARNING: Never install the heater
•in a bedroom or bathroom unless installed as a
vented appliance, see page 11 (Remote-Ready Mod-
els Only)
•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
INSTALLATION AND CLEARANCES FOR
VENT-FREE OPERATION
WARNING: Maintain the minimum clearances. If
possible, provide greater clearances from floor, ceil-
ing, and adjoining wall.
IMPORTANT: Vent-free heaters add moisture to the air. Although
this is beneficial, installing heater in rooms without enough venti-
lation air may cause mildew to form from too much moisture. See
Air for Combustion and Ventilation, pages 5 through 7.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP) for your unit. If
your gas supply is not correct, do not install fireplace. Call dealer
where you bought fireplace for proper type fireplace.
CAUTION: This heater creates warm air currents.
These currents move heat to wall surfaces next to
heater. Installing heater next to vinyl or cloth wall
coverings or operating heater where impurities (such
as, but not limited to, tobacco smoke, aromatic
candles, cleaning fluids, oil or kerosene lamps, etc.)
in the air exist, may discolor walls or cause odors.
LOG SIZING REQUIREMENTS
Log Minimum Firebox
Size Height Depth Front Rear *
Width Width
24" 17" 14" 28" 20 1/4"
30" 17" 14" 34" 22 3/8"
* Measured at 14" depth.
INSTALLATION
Check Gas Type
Installation and Clearances For Vent-Free Operation

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9
Heat Resistant
Material
(A)
Carefully follow the instructions below. This will ensure safe
installation into a masonry, UL127-listed manufactured fireplace,
or listed vent-free firebox.
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
A. Clearances from the side of the fireplace cabinet to any combus-
tible material and wall should follow diagram in Figure 4.
Example: The face of a mantel, bookshelf, etc. is made of
combustible material and protrudes 3 1/2" from the wall. This
combustible material must be 4" from the side of the fireplace
cabinet (see Figure 4).
Note: When installing your gas logs into a manufactured firebox,
follow firebox manufacturer’s instructions for minimum clearances
to combustible materials.
B. Clearances from the top of the fireplace opening to the ceiling
should not be less than 42 inches.
Figure 4 - Minimum Clearance for Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
INSTALLATION
Continued
Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.)
Above Fireplace
Noncombustible Requirements for
Material Distance (A) Safe Installation
12" or more Noncombustible material OK.
Between 8" and 12" 24" or 30" Models: Install
fireplace hood accessory
(GA6050, GA6052, or
GA6053 see Accessories ,
page 38).
Less than 8" Noncombustible material
must be extended to at least
8". See Between 8" and 12" ,
above. If you cannot extend
material, you must operate
heater with flue damper open.
Minimum Noncombustible Material Clearances
If Not Using Mantel
Note: If using a mantel proceed to If Using Mantel. If not using a
mantel, follow the information on this page.
You must have noncombustible material(s) above the fireplace
opening. Noncombustible materials (such as slate, marble, tile, etc.)
must be at least 1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombustible material must
extend at least 8" up (for all models). If noncombustible material is
less than 12", you must install the fireplace hood accessory (24" and
30" models only). See Figure 5 for minimum clearances.
NOTICE: Manual control heaters may be used as a
vented product. If so, you must always run heater with
chimney flue damper open. If running heater with
damper open, noncombustible material above fire-
place opening is not needed. Go to Installing Damper
Clamp Accessory for Vented Operation, page 11.
If Using Mantel
You must have noncombustible material(s) above the fireplace
opening. Noncombustible materials (such as slate, marble, tile, etc.)
must be at least 1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombustible material must
extend at least 8 inches up. If noncombustible material is less than
12", you must install the fireplace hood accessory. Even if noncom-
bustible material is more than 12", you may need the hood accessory
to deflect heat away from your mantel shelf. See Figure 5 and
Figures 6 and 7, page 10, for minimum clearances.
IMPORTANT: If you cannot meet these minimum clearances, you
must operate heater with chimney flue damper open. Go to Install-
ing Damper Clamp Accessory for Vented Operation, page 11.
INSTALLATION
Installation and Clearances For Vent-Free Operation (Cont.)

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10
Hearth
5"
Min.
Combustible
Material
Hearth Combustible
Material
5"
14"
Min.
Combustible
Material
Non-Combustible Material
Minimum Non-
Combustible
Material 8"
Min.
12" 15" 18"
All minimum
distances are
in inches
20"
2
1/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050, GA6052)
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible material clearances, you
must also meet required clearances between fireplace opening and
mantel shelf. If you do not meet the clearances listed below, you
will need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between mantel shelf and top of
fireplace opening, a hood is not required (see Figure 6).
Determining Minimum Mantel Clearance When
Using a Hood
If minimum clearances in Figure 6 are not met, you must have a
hood. When using a hood there are still certain minimum mantel
clearances required. Follow minimum clearances shown in Fig-
ure 7 when using hood.
NOTICE: Surface temperatures of adjacent walls and
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Follow all minimum clearances shown in this manual.
NOTICE: If your installation does not meet the minimum
clearances shown, you must do one of the following:
•operate the logs only with the flue damper open
•raise the mantel to an acceptable height
•remove the mantel
FLOOR CLEARANCES
A. If installing appliance on the floor level, you must maintain
the minimum distance of 14" to combustibles (see Figure 8).
B. If combustible materials are less than 14" to the fireplace, you
must install appliance at least 5" above the combustible floor-
ing (see Figure 9).
Figure 6 - Minimum Mantel Clearances Without Using Hood
Figure 8 - Minimum Fireplace
Clearances If Installed at Floor
Level
Figure 9 - Minimum Fireplace
Clearances Above
Combustible Flooring
Figure 7 - Minimum Mantel Clearances When Using Hood
Noncombustible Material
Hood
(GA6050, GA6052,
or GA6053)
Minimum Non-
Combustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All minimum
distances are
in inches
Log Set
All Models
2 1/2"
6"
8"
10"
INSTALLATION
Mantel Clearances
Floor Clearances

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11
INSTALLING DAMPER CLAMP ACCESSORY
FOR VENTED OPERATION
(Remote-Ready Models Only)
Note: When used as a vented heater, appliance must be installed
only in a solid-fuel burning fireplace with a working flue and
constructed of noncombustible material.
If your heater is a manually-controlled, you may use this heater as
a vented product. There are three reasons for operating your heater
in the vented mode.
1. The fireplace does not meet the clearance to combustibles re-
quirements for vent-free operation.
2. State or local codes do not permit vent-free operation.
3. You prefer vented operation.
If reasons number 1 or 2 above apply to you, you must permanently
open chimney flue damper. You must install the damper clamp
accessory (to order, see Accessories, page 38). This will insure vented
operation (see Figure 10). The damper clamp will keep damper open.
Installation instructions are included with clamp accessory.
See chart below for minimum permanent flue opening you must
provide. Attach damper clamp so the minimum permanent flue
opening will be maintained at all times.
Area of Various Standard
Round Flues
Diameter (ins.) Area (sq. ins.)
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Minimum Permanent
Height (ft.) Flue Opening (sq. ins.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
INSTALLATION
Continued
INSTALLING HEATER BASE ASSEMBLY
WARNING: You must secure this heater to fire-
place floor. If not, heater will move when you adjust
controls. Moving heater may cause a gas leak.
WARNING: If installing in a sunken fireplace,
special care is needed. You must raise the fireplace
floor to allow access to heater control panel. This will
insure adequate air flow and guard against sooting.
Raise fireplace floor with noncombustible material.
Make sure material is secure.
CAUTION: Do not pick up heater base assembly
by burners. This could damage heater. Only handle
base assembly by sides of base.
IMPORTANT: Make sure the heater burners are level. If heater is
not level, heater will not work properly. For thermostat models,
avoid damage to thermostat bulb. Avoid nicks or sharp bends in
thermostat bulb wire. Keep thermostat bulb in mounting bracket.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose and fitting (not provided) (if allowed
by local codes)
• sealant (resistant to propane/LP gas, not provided)
• electric drill with 3/16" drill bit (metal or masonry as applicable)
• flathead screwdriver
1. Connect fitting to base as shown in Figure 11. Connect approved
flexible gas hose to fitting in base (see Figure 11).
IMPORTANT: Hold gas fitting with wrench when connecting
flexible gas hose.
Figure 10 - Attaching Damper Clamp
Damper
Damper Clamp
Damper
Manufactured Fireplace
Masonry Fireplace
Damper Clamp
Damper
Figure 11 - Attaching Flexible Gas Hose to Heater
Fitting
Flexible Gas Hose (if
allowed by local codes)
INSTALLATION
Installing Damper Clamp Accessory For Vented Operation
Installing Heater Base Assembly

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INSTALLATION
Continued
2. Locate two masonry screws in hardware package.
3. Place heater base in fireplace.
4. Place logs in their proper position on heater base (see Installing
Logs, pages 15 through 17).
5. Center heater base and logs front-to-back and side-to-side in
fireplace.
6. Carefully remove logs without moving heater base.
7. Mark screw locations through one hole on each side of the
mounting bracket (see Figure 12). If installing in a brick-bot-
tom fireplace, mark screw locations in mortar joint of bricks.
8. Remove heater base from fireplace. If installing optional con-
trol accessories, do so at this time. Follow all directions pro-
vided with accessory.
9. Drill holes at marked locations using 3/16" drill bit.
10. Attach base assembly to fireplace floor using two masonry
screws (in hardware package).
Figure 12 - Attaching Base Assembly to Fireplace Floor (Base
Assembly Will Vary According to Model)
Masonry
Screw
Mounting
Flanges
CONNECTING TO GAS SUPPLY
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 heater to gas supply. Follow all local codes.
CAUTION: For propane/LP gas, never connect
heater directly to the propane/LP supply. This heater
requires an external regulator (not supplied). Install
the external regulator between the heater and pro-
pane/LP supply.
Installation Items Needed
Before installing heater, make sure you have the items listed below.
• external regulator for propane/LP only (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff valve with 1/8" NPT
tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA design-certified equipment shutoff valve from
your dealer. See Accessories, page 38.
For propane/LP only, the installer must supply an external regulator.
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 pointing down as
shown in Figure 13, page 13. Pointing the vent down protects it from
freezing rain or sleet.
WARNING: For natural gas, never connect heater
to private (non-utility) gas wells. This gas is com-
monly known as wellhead gas.
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in certain
areas. Check your local codes. Use pipe of 1/2" diam-
eter or greater to allow proper gas volume to heater. If
pipe is too small, undue loss of volume will occur.
INSTALLATION
Installing Heater Base Assembly (Cont.)
Connecting To Gas Supply

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13
INSTALLATION
Continued
Propane/LP
Supply Tank
External Regulator
Figure 13 - External Regulator With Vent Pointing Down
Vent Pointing Down
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 heater (see Figure 14 or
15, depending on your model).
IMPORTANT: Install equipment shutoff valve in an accessible
location. The equipment shutoff valve is for turning on or shutting
off the gas to the appliance.
Apply pipe joint sealant lightly to male NPT threads. This will
prevent excess sealant from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
WARNING: Use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
We recommend that you install a sediment trap in supply line as shown
in Figure 14 or 15, depending on your model. Locate sediment trap
where it is within reach for cleaning. Install in piping system between
fuel supply and heater. Locate sediment trap where trapped matter is not
likely to freeze. A sediment trap traps moisture and contaminants. This
keeps them from going into heater controls. If sediment trap is not
installed or is installed wrong, heater may not run properly.
CAUTION: Avoid damage to regulator. Hold gas
regulator with wrench when connecting it to gas
piping and/or fittings (Thermostat-Controlled Mod-
els Only).
CAUTION: Avoid damage to gas control. Hold gas
control with wrench when connecting it to gas piping
and/or fittings (Remote-Ready Models Only).
Figure 14 - Gas Connection (Thermostat-Controlled Models
Only)
Tee Cap Pipe
Joint Nipple
3" Minimum
Gas Regulator
PROPANE/LP -
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if allowed
by local codes)
Sediment Trap
NATURAL -
From Gas
Meter
(5" W.C.**
to 10.5" W.C.
Pressure)
* Purchase the optional CSA design-certified equipment shutoff valve
from your dealer. See Accessories, page 38.
**Minimum inlet pressure for purpose of input adjustment.
Figure 15 - Gas Connection (Remote-Ready Models Only)
Gas Control
Valve
Tee Pipe
Joint Nipple Cap
3" Minimum
Sediment Trap
PROPANE/LP -
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
NATURAL -
From Gas
Meter
(5" W.C.**
to 10.5" W.C.
Pressure)
CSA Design-Certified Equipment
Shutoff Valve With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if allowed
by local codes)
INSTALLATION
Connecting To Gas Supply (Cont.)

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ON
POSITION
OFF
POSITION
INSTALLATION
Continued
WARNING: Test all gas piping and connections
for leaks after installing or servicing. Correct all
leaks at once.
WARNING: Never use an open flame to check for
a leak. Apply a noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak. Correct all leaks
at once.
CAUTION: Make sure external regulator has been
installed between propane/LP supply and heater. See
guidelines under Connecting to Gas Supply , page 12.
Pressure Testing gas Supply Piping system
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main gas valve (control
valve) and equipment shutoff valve from gas supply piping sys-
tem. Pressures in excess of 1/2 psig will damage heater regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was connected.
3. Pressurize supply piping system by either opening propane/
LP supply tank valve for propane/LP gas or opening main gas
valve located on or near gas meter for natural gas, or using
compressed air.
4. Check all joints of gas supply piping system. Apply a noncorrosive
leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve to gas supply.
Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 16).
2. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas, or using compressed
air.
3. Check all joints from gas meter for natural or propane/LP sup-
ply to equipment shutoff valve (see Figure 17 or 18). Apply a
noncorrosive leak detection fluid to all joints. Bubbles form-
ing show a leak.
4. Correct all leaks at once.
CHECKING GAS CONNECTIONS
Figure 16 - Equipment Shutoff Valve
Figure 17 - Checking Gas Joints (Propane/LP only)
Thermostat Gas Valve or
Control Valve Location
Propane/LP
Supply Tank
Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Pressure Testing Heater Gas Connections
1. Open equipment shutoff valve (see Figure 16).
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 knobs of heater are in the OFF position.
4. Check all joints from equipment shutoff valve to thermostat gas
valve (Thermostat-Controlled Models) or control valve (Remote-
Ready Models) (see Figure 17 or 18). Apply a noncorrosive leak
detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, pages 18 through 22).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appliance, page 19 [Ther-
mostat-Controlled Models] or page 21 [Remote-Ready Models]).
INSTALLATION
Checking Gas Connections
Figure 18 - Checking Gas Joints (Natural Gas only)
Thermostat Gas Valve or
Control Valve Location
Gas Meter
Equipment Shutoff Valve

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15
INSTALLATION
Installing Logs
INSTALLING LOGS
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.
CAUTION: After installation and periodically there-
after, check to ensure that no yellow flame comes in
contact with any log. With the heater set to High,
check to see if flames contact any log. If so, reposi-
tion logs according to the log installation instruc-
tions in this manual. Yellow flames contacting logs
will create soot.
It is very important to install the logs exactly as instructed. Do not
modify logs. Only use logs supplied with heater.
Models CGX3924NT, CGX3924PT, CGX3930NT,
CGX3930PT, CGX3924NR, AND CGX3924PR
1. Place log #1 (ember bed) onto the base. Position the log over
the shoulder bolts on either side of the front burner. The log
will sit on top of the front burner (see Figure 19).
2. Place log #2 behind the back burner and onto the three tabs as
shown in Figure 20.
3. Place log #3 on the left side of the base. It will overlap log #1
and log #2 and will wrap around the front end of the back
burner (see Figure 21).
4. Place log #4 onto the pins on the right side of log #1 and onto
the “ledge” on the front of log #2 (see Figure 22).
5. Place log #5 over the knob on log #2 and across the back part
of log #1. It will slant down toward the front (see Figure 22).
INSTALLATION
Continued
Figure 19 - Installing Log #1 [Ember Bed] (Model CGX3930NT
Shown)
Figure 20 - Installing Log #2 (Model CGX3930NT Shown)
Figure 21 - Installing Log #3 (Model CGX3930NT Shown)
Figure 22 - Installing Logs #4 and #5 (Model CGX3930NT
Shown)

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INSTALLATION
Continued
Models VGX24NT, VGX24PT, VGX30NT, VGX30PT,
VGX24NR, VGX24PR, VGX30NR, VGX30PR,
EX24NR, EX24PR, EX30NR AND EX30PR
1. Place log #1 (ember bed) onto the base. Position the log over
the shoulder bolts on either side of the front burner. The log
will sit on top of the front burner (see Figure 23).
2. Place log #2 over the right portion of the back burner and onto
the two tabs on the right side of the base as shown in Figure 24.
3. Place log #3 on the left side of the base. It will wrap around the
front end of the back burner and onto two tabs on the base (see
Figure 25).
4. Place log #4 onto the tabs on the back of the base. It will lay on
the “ledge” on the back of log #3 (see Figure 26).
5. Place log #5 onto the pins on log #1 (see Figure 27).
Figure 23 - Installing Log #1 [Ember Bed] (Model VGX30NT
Shown)
Figure 24 - Installing Log #2 (Model VGX30NT Shown)
Figure 25 - Installing Log #3 (Model VGX30NT Shown)
Figure 26 - Installing Log #4 (Model VGX30NT Shown)
Figure 27 - Installing Log #5 (Model VGX30NT Shown)
INSTALLATION
Installing Logs (Cont.)

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17
INSTALLATION
Continued
Models LGX3924NT and LGX3924PT
1. Place log #1 (ember bed) onto the base. Position the log over
the shoulder bolts on either side of the front burner. The log
will sit on top of the front burner (see Figure 28).
2. Place log #2 behind the back burner and onto the two back
tabs as shown in Figure 29.
3. Place log #3 on the left side of the base. It will wrap around the
front end of the back burner and fit over the tab at the front of
the base (see Figure 30).
4. Place log #4 onto the pins on the right side of log #1 and onto
the tab on the base in front of log #2 (see Figure 31).
5. Place log #5 crossing over log #2 and log #1 as shown in
Figure 32.
Figure 28 - Installing Log #1 [Ember Bed] (Model LGX3924NT
Shown)
Figure 29 - Installing Log #2 (Model LGX3924NT Shown)
Figure 30 - Installing Log #3 (Model LGX3924NT Shown)
Figure 32 - Installing Log #5 (Model LGX3924NT Shown)
INSTALLATION
Installing Logs (Cont.)
Figure 31 - Installing Log #4 (Model LGX3924NT Shown)

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INSTALLATION
Continued
Figure 33 - Attaching Grate to Base Assembly (Logs and Base
Will Vary According to Model)
Grate Slots in Base
ATTACHING GRATE TO BASE ASSEMBLY
Locate the two slots in the front of the base assembly. Carefully slide
the decorative grate into these slots (see Figure 33).
OPERATING HEATER
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire de-
partment.
C. 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 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.
FOR YOUR SAFETY READ
BEFORE LIGHTING
LIGHTING INSTRUCTIONS
WARNING:
•If fireplace has glass doors, never operate this
heater with glass doors closed. If you operate
heater with doors closed, heat buildup inside fire-
place will cause glass to burst. Also if fireplace
opening has vents at the bottom, you must open
the vents before operating heater.
•You must operate this heater with a fireplace screen
in place. Make sure fireplace screen is closed
before running heater.
NOTICE: During initial operation of new heater, burn-
ing logs will give off a paper-burning smell. Orange
flame will also be present. Open damper or window to
vent smell. This will only last a few hours.
INSTALLATION
Attaching Grate To Base Assembly
OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS)
For Your Safety Read Before Lighting
Lighting Instructions
ADDING LAVA ROCK
Place lava rock around base of heater. Be sure not to cover the
control knobs or air inlet openings on the front of heater.
THERMOSTAT-CONTROLLED MODELS

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19
Note: Home owners generally prefer to operate their heater
with the chimney damper closed. This will put all the heat into
the room. However, there may be times you will desire the full
flames of the Hi heat setting but will find the heat output
excessive. You can open the chimney damper (if you have one)
fully or partially to release some of the heat.
WARNING: Damper handle will be hot if heater has
been running.
1. STOP! Read the safety information on page 18, column 2.
2. Make sure equipment shutoff valve is fully open.
3. Turn control knob clockwise
Clockwise
to the OFF position.
4. 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, page 18, column 2. If
you don’t smell gas, go to the next step.
5. Turn control knob counterclockwise to the PI-
LOT position. Press in control knob for five (5) seconds
(see Figure 34).
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.
6. With thermostat control knob pressed in, press and release
ignitor button. This will light pilot. The pilot is attached to
the front burner. If needed, keep pressing ignitor button
until pilot lights.
Note: If pilot does not stay lit, contact a qualified service
person or gas supplier for repairs. Until repairs are made,
light pilot with match. To light pilot with match, see Manual
Lighting Procedure on page 20.
7. 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 3 through 7. This heater
has a safety interlock system. Wait one (1) minute for sys-
tem to reset before lighting pilot again.
8. Turn control knob counterclockwise to desired
heating level. The front burner should light. Set control
knob to any heat level between HI and LO.
9. To light the rear yellow flame burner, push in and turn
rear burner control knob counterclockwise to the
ON position.
OPERATING HEATER
Continued
Figure 34 - Control Knob(s) and Ignitor Button Locations
Models: VGX24NT, VGX24PT, VGX30NT, VGX30PT, CGX3924NT,
CGX3924PT, CGX3930NT and CGX3930PT
Ignitor Button Control Knob Rear Burner
Control Knob
Models: LGX3924NT and LGX3924PT
Ignitor Button Control Knob
Figure 35 - Pilot (Propane/LP)
TO TURN OFF GAS TO APPLIANCE
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
Shutting Off Heater
1. Turn control knob clockwise to the OFF position.
2. Turn rear burner control knob clockwise to the
OFF position.
Shutting Off Burners Only (pilot stays lit)
1. Turn control knob clockwise to the PILOT position.
2. Turn rear burner control knob clockwise to the
OFF position.
OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS)
Lighting Instructions (Cont.)
To Turn Off Gas To Appliance
Ignitor Electrode
Pilot Burner
Thermocouple
Figure 36 - Pilot (Natural)
Ignitor
Electrode
Pilot Burner
Thermocouple

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OPERATING HEATER
Continued
1. Follow steps 1 through 5 under Lighting Instructions, page 19.
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 8 and 9 under Lighting Instructions, page 19.
THERMOSTAT CONTROL
OPERATION
The thermostat control knob can be set to any comfort level
between Hi and Lo. The thermostat will gradually modulate the
heat output and flame height from higher to lower settings, or
pilot, in order to maintain the comfort level you select. The ideal
comfortsetting will vary byhouseholddependingupon the amount
of space to be heated, the output of the central heating system, etc.
Note: Selecting the Hi setting with the control knob will cause the
burner to remain fully on, without modulating down in most cases.
MANUAL LIGHTING PROCEDURE
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone
in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire de-
partment.
C. 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 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.
FOR YOUR SAFETY
READ BEFORE LIGHTING
1. STOP! Read the safety information in column 1.
2. Make sure equipment shutoff valve is fully open.
3. Set switch in OFF position.
WARNING:
•If fireplace has glass doors, never operate this
heater with glass doors closed. If you operate
heater with doors closed, heat buildup inside fire-
place will cause glass to burst. Also if fireplace
opening has vents at the bottom, you must open
the vents before operating heater.
•You must operate this heater with a fireplace screen
in place. Make sure fireplace screen is closed
before running heater.
NOTICE: During initial operation of new heater, burn-
ing logs will give off a paper-burning smell. Open
damper or window to vent smell. This will only last a
few hours.
Note: Home owners generally prefer to operate their heater
with the chimney damper closed. This will put all the heat into
the room. However, there may be times you will desire the full
flames of the High heat setting but will find the heat output
excessive. You can open the chimney damper (if you have one)
fully or partially to release some of the heat.
WARNING: Damper handle will be hot if heater
has been running.
4. Press in and turn control knobs 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 37, page 21).
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.
WARNING: Burner will come on automatically
within one minute when the remote selector switch is
in the ON position after the pilot is lit.
LIGHTING INSTRUCTIONS
OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS)
Thermostat Control
Manual Lighting Procedure
OPERATING HEATER (REMOTE-READY MODELS)
For Your Safety Read Before Lighting
Lighting Instructions
REMOTE-READY MODELS