Comfort Glow CGD3018NT Installation manual

MOUNTAIN OAK, PREMIUM AGED SPLIT OAK,
AND SMOKY MOUNTAIN OAK UNVENTED
(VENT-FREE) NATURAL GAS LOG HEATERS
VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGN-CERTIFIED
AS VENTED DECORATIVE APPLIANCES
OWNER’S OPERATION AND INSTALLATION MANUAL
CGD3018N
CY2718N
CGD3924N
CY3124N
CGD3930N
18", 24", and 30"
Variable Manually-Controlled Models
CGD3018NT
CGD3930NT
CGD3924NT
CGB3924NT
®
CGB3930NT
Patent Pending
18", 24" and 30" ThermostaticallyControlled Models
(Smoky Mountain Oak Model Shown)
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury, or loss of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
— Installation and service must be performed by a qualified installer, service
agency, or the gas supplier.
WARNING: Improper installation, adjustment, alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual for correct installation and operational procedures. For
assistance or additional information
consult a qualified installer, service
agency, or the gas supplier.
WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fireplace,
or in an approved ventless firebox. It is
design-certified for these installations
in accordance with ANS Z21.11.2.
Exception: Do not install this appliance
in a factory-built fireplace that includes
instructions stating it has not been
tested or should not be used with
unvented gas logs.
WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in
which it is installed. Provisions for adequate combustion and ventilation air must be
provided. Refer to Air for Combustion and Ventilation section on page 4 of this manual.
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited
by state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
VENT-FREE NATURAL GAS LOG HEATER
SAFETY
INFORMATION
2.
WARNINGS
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate, or service this heater. Improper use of this heater can
cause serious injury or death from
burns, fire, explosion, electrical
shock, and carbon monoxide
poisoning.
3.
4.
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.
5.
6.
Natural Gas: Natural gas is 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.
7.
8.
WARNING: Any change to this
heater or its controls can be
dangerous.
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.
9.
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
This heater shall not be installed in a bedroom or bathroom unless installed as a
vented appliance (Variable ManuallyControlled Models Only) (see page 10).
Never install the heater
• in a recreational vehicle
• where curtains, furniture, clothing, or
other flammable objects are less than
42 inches from the front, top, or sides
of the heater
• in high traffic areas
• in windy or drafty areas
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 ignite
if highly heated. Inspect chimney flue
for damage. If damaged, operate heater
with flue damper closed.
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 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.
This log heater is designed to be smokeless. If logs ever appear to smoke, turn
off heater and call a qualified service
person. Note: During initial operation,
slight smoking could occur due to log
curing and heater burning manufacturing residues.
To prevent the creation of soot, follow
the instructions in Cleaning and Maintenance, page 20.
2
10. 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.
11. Before using furniture polish, wax, carpet cleaner, or similar products, turn
heater off. If heated, the vapors from
these products may create a white powder residue within burner box or on
adjacent walls or furniture.
12. Do not use a blower insert, heat exchanger insert or other accessory not
approved for use with this heater.
13. This heater needs fresh, outside air ventilation to run properly. This heater has
an oxygen depletion sensor (ODS) pilot light safety system. The ODS shuts
down the heater if not enough fresh air
is available. See Air for Combustion
and Ventilation, pages 4 through 6. If
heater keeps shutting off, see Troubleshooting, pages 21 through 23.
14. Do not run heater
• where flammable liquids or vapors
are used or stored
• under dusty conditions
15. Do not use this heater to cook food or
burn paper or other objects.
16. Never place any objects on the heater.
17. Heater base assembly becomes very hot
when running 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.
18. Carefully supervise young children
when they are in the room with heater.
19. Do not use heater if any part has been
exposed to or under water. Immediately
call a qualified service technician to inspect the room heater and to replace any
part of the control system and any gas
control which has been under water.
20. Do not operate heater if any log is broken. Do not operate heater if a log is
chipped (dime-sized or larger).
21. Turn heater off and let cool before servicing. Only a qualified service person
should service and repair heater.
22. Operating heater above elevations of
4,500 feet could cause pilot outage.
104340
OWNER’S MANUAL
PRODUCT
IDENTIFICATION
LOCAL CODES
Crossover Log
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
ANS Z223.1, also known as NFPA 54*.
Back Log
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
Front Log
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Burner
Middle Log
Piezo
Ignitor
Control Knob
Note: Where listed vented decorative logs
are required, thermostat models are not
permitted.
UNPACKING
CAUTION: Do not remove the
metal Data Plates from the grate
assembly. The Data Plates contain
important product information.
Base Grate
1.
Figure 1 - Vent-Free Gas Log Heater - Duel Burner (Logs May Vary by Model Yellow Flame Logs Shown)
Back Log
Crossover Log
2.
3.
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 grate.
Remove all protective packaging applied to logs and heater for shipment.
Check all items for any shipping damage. If damaged, promptly inform
dealer where you bought heater.
PRODUCT
FEATURES
Front Log
OPERATION
Burner
Piezo
Ignitor
Control Knob
Figure 2 - Vent-Free Gas Log Heater - Single Burner (Mountain Oak Logs Shown)
104340
3
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
realistic, dancing yellow flames. This heater
is designed for vent-free operation with flue
damper closed. It has been tested and approved to ANS Z21.11.2 standard for
unvented heaters. State and local codes in
some areas prohibit the use of vent-free
heaters. Non-thermostat models may also
be operated as a vented decorative (ANS
Z21.60) product by opening flue damper.
VENT-FREE NATURAL GAS LOG HEATER
PRODUCT
FEATURES
PROVIDING ADEQUATE
VENTILATION
Continued
SAFETY PILOT
The following are excerpts from National
Fuel Gas Code. NFPA 54/ANS Z223.1, Section 5.3, Air for Combustion and Ventilation.
This heater has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).
The ODS/pilot is a required feature for ventfree room heaters. The ODS/pilot shuts off
the heater if there is not enough fresh air.
All spaces in homes fall into one of the three
following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.
AIR FOR
COMBUSTION AND
VENTILATION
WARNING: This heater shall
not be installed in a confined space
or unusually tight construction
unless provisions are provided
for adequate combustion and ventilation air. Read the following instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efficient than ever. New materials, increased
insulation, and new construction methods
help reduce heat loss in homes. Home owners
weather strip and caulk around windows and
doors to keep the cold air out and the warm air
in. During heating months, home owners
want their homes as airtight as possible.
While it is good to make your home energy
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 fuelburning appliances.
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 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 windows 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.
Confined and Unconfined Space
The National Fuel Gas Code (ANS Z223.1,
1992 Section 5.3) defines a confined space
as a space whose volume is less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per
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 m3 per 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.
This heater shall not be installed in a confined space or unusually tight construction
unless provisions are provided for adequate
combustion and ventilation air.
* Adjoining rooms are communicating only
if there are doorless passageways or ventilation grills between them.
If your home meets all of the three
criteria above, you must provide additional fresh air. See Ventilation Air
From Outdoors, page 6.
If your home does not meet all of the
three criteria above, proceed to Determining Fresh-Air Flow for Heater
Location, page 5.
4
104340
OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
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 openings, add the volume of these rooms to the total volume of
the space.
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
____________(volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 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
Example:
Gas furnace
______________ Btu/Hr
Gas water heater
40,000
Btu/Hr
Vented gas heater
______________ Btu/Hr
Vent-free heater +
39,000
Btu/Hr
Gas fireplace logs
______________ Btu/Hr
Total
=
79,000
Btu/Hr
Other gas appliances* + ______________ Btu/Hr
Total
= ______________ Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
_________________ Btu/Hr (maximum the space can support)
_________________ Btu/Hr (actual amount of Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the space can support)
79,000 Btu/Hr (actual amount of Btu/Hr used)
The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support.
You must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr 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.
WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space
or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of
the methods described in the National Fuel Gas Code, ANS Z223.1, 1992, Section 5.3 or applicable local codes.
Continued
104340
5
VENT-FREE NATURAL GAS LOG HEATER
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 3). You can also
remove door into adjoining room (see option 3, Figure 3). Follow the National Fuel
Gas Code NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
WARNING: Rework worksheet, adding the space of the
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.
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.
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.
12"
Ventilation
Grills
Into Adjoining
Room,
Option 1
Ventilation Grills
Into Adjoining Room,
Option 2
Or
Remove
Door into
Adjoining
Room,
Option
3
12"
Figure 3 - Ventilation Air from Inside Building
Outlet
Air
Ventilated
Attic
Outlet
Air
To Attic
To
Crawl
Space
Inlet
Air
Inlet Air
Ventilated
Crawl Space
Figure 4 - Ventilation Air from Outdoors
6
104340
OWNER’S MANUAL
INSTALLATION
NOTICE: This heater is intended
for use as supplemental heat. Use
this heater along with your primary heating system. Do not install this heater as your 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.
NOTICE: A qualified service person must install heater. Follow
all local codes.
NOTICE: State or local codes may
only allow operation of this appliance in a vented configuration.
Check your state or local codes.
WARNING: 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 ignite if highly heated. A dirty
chimney flue may create and distribute soot within the house. Inspect chimney flue for damage. If
damaged, operate heater with flue
damper closed.
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 heatresistant sealant. Do not seal
chimney flue damper.
WARNING: Never install the
heater
• in a bedroom or bathroom unless installed as a vented appliance (Variable ManuallyControlled Models Only) (see
page 10)
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the heater
• in high traffic areas
• in windy or drafty areas
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 tobacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc) in the air exist, may
discolor walls.
IMPORTANT: Vent-free heaters add moisture to the air. Although this is beneficial,
installing heater 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.
CHECK GAS TYPE
Use only natural gas. If your gas supply is
not natural gas, do not install heater. Call
dealer where you bought heater for proper
type heater.
INSTALLATION AND
CLEARANCES (Vent-Free
Operation Only)
WARNING: Maintain the minimum clearances. If you can, provide greater clearances from
floor, ceiling, and adjoining wall.
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Log Size
Side Wall
Ceiling
18", 24", 30"
16"
42"
LOG SIZING REQUIREMENTS
Minimum Firebox Size
Log
Front Rear*
Size Height Depth Width Width
18" 17"
14"
24"
20"
24" 17"
14"
28"
21"
30" 17"
14"
34"
24"
*Measured at 14" Depth
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured fireplace, or
listed vent-free firebox.
Minimum Wall and Ceiling
Clearances (see Figure 5)
A. Clearances from the side of the fireplace opening to any combustible wall
should not be less than 16 inches.
B. Clearances from the top of the fireplace
opening to the ceiling should not be less
than 42 inches.
42"
16"
Left and
Right Sides
Figure 5 - Minimum Clearance to Wall and
Ceiling
Continued
104340
7
VENT-FREE NATURAL GAS LOG HEATER
INSTALLATION
If Using Mantel
Continued
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 (for all
models). If noncombustible material is less
than 12", you must install the fireplace hood
accessory (24" and 30" models only). Even
if noncombustible material is more than
12", you may need the hood accessory to
deflect heat away from your mantel shelf.
See Figure 6 and Figures 7 and 8 on page 9
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 fireplace opening is not
needed. Go to Installing Damper
Clamp Accessory for Vented
Operation, page 10.
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 below.
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 6 for
minimum clearances.
IMPORTANT: If you cannot meet these
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.
IMPORTANT: If you cannot meet these
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.
Noncombustible
Material Distance (A)
Requirements for
Safe Installation
12" or more
Noncombustible material okay.
Between 8" and 12"
24" or 30" Models: Install fireplace hood accessory (GA6050, GA6052, or GA6053 see Accessories, page 27).
18" Model: Noncombustible material okay.
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.
Heat Resistant
Material
(A)
Figure 6- Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace
8
104340
OWNER’S MANUAL
INSTALLATION
10"
Continued
8"
Mantel Shelf
6"
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 in Figure 7, you will need a hood.
Underside of
Mantel Shelf
2 1/2"
All minimum
distances are
in inches
Minimum NonCombustible
Material
(A)
Determining Minimum Mantel
Clearance
12"
18"
20"
22"
24"
Log Set
24"/30" Models
8"
8"
14"
163/4"
20"
18" Model
Top of Fireplace
Opening
If you meet minimum clearance between
mantel shelf and top of fireplace opening, a
hood is not required (see Figure 7).
Minimum NonCombustible
Material Height
Distances to
Underside of
Mantel
Determining Minimum Mantel
Clearance When Using a Hood
If minimum clearances in Figure 7 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 Figure 8 when using hood.
Figure 7 - Minimum Mantel Clearances Without Using Hood
Mantel Shelf
12"
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
8"
6"
2 1/2"
Minimum NonCombustible
Material
All minimum
distances are
in inches
Log Set
8"
Min.
12"
15"
18"
20"
18",
24", 30"
All Models
Models
Top of Fireplace
Opening
FLOOR CLEARANCES
A. If installing appliance on the floor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 9).
B. If combustible materials are less than
14" to the fireplace, you must install
appliance at least 5" above the combustible flooring (see Figure 10).
Underside of
Mantel Shelf
10"
Hood
(GA6050,
(GA6050, GA6052,
GA6052)
and GA6053)
Distances to
Underside of
Mantel
Figure 8 - Minimum Mantel Clearances When Using Hood
14"
Min.
Combustible
Material
Hearth
Combustible
Material
5"
Min.
Noncombustible Material
Figure 9- Minimum Fireplace Clearances
If Installed at Floor Level
Figure 10 - Minimum Fireplace Clearances
Above Combustible Flooring
Continued
104340
9
VENT-FREE NATURAL GAS LOG HEATER
INSTALLATION
Continued
INSTALLING DAMPER
CLAMP ACCESSORY FOR
VENTED OPERATION
Damper
Clamp
Damper
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.
Damper
Clamp
If your heater is a manually controlled model,
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 requirements for
vent-free operation.
2. State or local codes do not permit ventfree 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
27). This will insure vented operation (see
Figure 11). The damper clamp will keep
damper open. Installation instructions are
included with clamp accessory.
Damper
Damper
Masonry Fireplace
Manufactured Fireplace
Figure 11 - Attaching Damper Clamp
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"
6"
7"
8"
20 sq. inches
29 sq. inches
39 sq. inches
51 sq. inches
Chimney
Minimum Permanent
Height (ft.) Flue Opening (sq. ins.)
6' to 15'
15' to 30'
39 sq. inches
29 sq. inches
10
104340
OWNER’S MANUAL
INSTALLATION
Installation Items Needed
Continued
• hardware package (provided with heater)
• approved flexible gas hose (not provided)
(if allowed by local codes)
• sealant resistant to propane (propane/LP)
gas, not provided
• electric drill with 3/16" drill bit
1. Apply pipe joint sealant lightly to male
threads of the fitting to be threaded into
gas regulator. Connect approved flexible gas hose to gas regulator of heater
(see Figure 12).
IMPORTANT: Hold gas regulator with
wrench when connecting flexible gas
hose.
2. Locate masonry screws in hardware
package.
3. Position heater base assembly in fireplace.
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove the
metal data plates attached to the
heater base assembly. The data
plates contain important warranty
information.
WARNING: You must secure
this heater to fireplace 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 the
burner. This could damage
heater. Only handle base assembly by grates.
Flexible Gas Hose
(if allowed by local
codes)
Heater Gas
Regulator
Fitting
Figure 12 - Attaching Flexible Gas Hose
to Heater Gas Regulator
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.
4.
5.
6.
7.
8.
Mark screw locations through holes in
mounting brackets (see Figure 13 or
14). If installing in a brick-bottom fireplace, mark screw locations in mortar
joint of bricks.
Remove heater base from fireplace.
Drill holes at marked locations using
3/16" drill bit.
Attach base assembly to fireplace floor
using two masonry screws (in hardware
package) (see Figures 13 or 14).
Connect to gas supply. See Connecting To Gas Supply, page 12.
Masonry
Screw
Mounting
Bracket
Figure 13 - Attaching Base Assembly to
Fireplace Floor - Dual Burner Model
Masonry
Screw
Mounting
Bracket
Figure 14 - Attaching Base Assembly to
Fireplace Floor - Single Burner Model
Continued
104340
11
VENT-FREE NATURAL GAS LOG HEATER
INSTALLATION
Continued
CONNECTING TO GAS
SUPPLY
NOTICE: A qualified service person must connect heater to gas
supply. Follow all local codes.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• manual shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An A.G.A. design-certified manual shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See
Accessories, page 27.
Installation must include a manual shutoff
valve, union, and plugged 1/8" NPT tap.
Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from
heater (see Figure 15).
Apply pipe joint sealant lightly to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
CAUTION: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Install sediment trap in supply line as shown
in Figure 15. Locate sediment trap where it
is within reach for cleaning. 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.
A.G.A. Design-Certified
Manual Shutoff Valve
With 1/8" NPT Tap*
From
Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Approved Flexible
Gas Hose (if allowed
by local codes)
Gas
Regulator
Tee Joint
WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
Pipe
Nipple
3" Minimum
Cap
Sediment Trap
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"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
Figure 15 - Gas Connection
* Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See
Accessories, page 27.
** Minimum inlet pressure for purpose of input adjustment.
12
104340
OWNER’S MANUAL
INSTALLATION
Continued
CHECKING GAS
CONNECTIONS
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
mixture of liquid soap and water
to all joints. Bubbles forming
show a leak. Correct all leaks at
once.
Test Pressures Equal To or Less Than
1/2 PSIG
1. Close manual shutoff valve (see Figure 16).
2. Pressurize supply piping system by either using compressed air or opening
main gas valve located on or near gas
meter.
3. Check all joints from gas meter to
manual shutoff valve (see Figure 17).
Apply mixture of liquid soap and water to gas joints. Bubbles forming show
a leak.
4. Correct all leaks at once.
Manual
Shutoff Valve
1.
2.
3.
4.
5.
6.
Open
ON
POSITION
Pressure Testing Gas Supply
Piping system
Test Pressures In Excess Of 1/2 PSIG
1. Disconnect heater and its individual
manual shutoff valve from gas supply
piping system. Pressures in excess of
1/2 psig will damage heater regulator.
2. Cap off open end of gas pipe where
manual shutoff valve was connected.
3. Pressurize supply piping system by either using compressed air or opening
main gas valve located on or near gas
meter.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and manual shutoff
valve to gas supply. Check reconnected
fittings for leaks.
Pressure Testing Heater Gas
Connections
7.
OFF
POSITION
Closed
Open manual shutoff valve (see Figure
16).
Open main gas valve located on or near
gas meter.
Make sure control knob of heater is in
the OFF position.
Check all joints from manual shutoff
valve to control valve (see Figure 17).
Apply mixture of liquid soap and water to gas joints. Bubbles forming show
a leak.
Correct all leaks at once.
Light heater (see Operating Heater,
pages 17 and 18 [manually-controlled
models] or pages 18 and 19 [thermostatically-controlled models]). Check
all other internal joints for leaks.
Turn off heater (see To Turn Off Gas to
Appliance, page 18 [manually-controlled models] or page 19 [thermostatically-controlled models]).
Figure 16 - Manual Shutoff Valve
Manual
Shutoff
Valve
Thermostat Gas Valve or
Control Valve Location
Gas Meter
Figure 17 - Checking Gas Joints
Continued
104340
13
VENT-FREE NATURAL GAS LOG HEATER
INSTALLATION
Continued
INSTALLING LOGS
CAUTION: After installation
and periodically thereafter, check
to ensure that no flame comes in
contact with any log. With the
heater set to high, check to see if
flames contact any log. If so, reposition logs according to the
log installation instructions in this
manual. Flames contacting logs
will create soot.
Peg
Hole in
Grate Base
3
Post
Recess
Post
Burner
Dual Burner Yellow Flame Models
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
Front Log (#3)
Back Log (#1)
Figure 20 - Installing Front Log (#3)
Figure 18 - Installing Back Log (#1)
Middle Log (#2)
Notches
Crossover Log
(#1)
Cutout
Tab
Each log is marked with a number. These
numbers will help you identify the log when
installing. It is very important to install these
logs exactly as instructed. Do not modify
logs. Only use logs supplied with heater.
1. Locate pegs on the bottom of back log
(#1). Slide these pegs into the holes in
the grate base behind the burner (see
Figure 18).
2. Place the base of the middle log (#2) in
the U-shaped slots of the grate base in
front of the back log. The cutout on the
right of the middle log should fit over the
burner (see Figure 19). Make sure the
front of the middle log is resting on the
tabs of the grate base and the cutout area
is centered over the burner “U” bend.
3. Locate the recesses on the back of the
front log (#3). Fit these recesses between the posts of the grate base (see
Figure 20).
4. Locate the notches in the bottom of the
crossover log (#4). Place the crossover
log on top of the middle log and front
log. Make sure the notches of the crossover log lines up with rectangular knobs
on top of the middle and front logs (see
Figure 21).
5. Place lava rock around base of heater.
Do not put lava rock on logs on burner.
Rectangular
Knobs
Burner
“U” Bend
U-Shaped
Slot
Figure 19 - Installing Middle Log (#2)
14
Figure 21 - Installing Crossover Log (#4)
104340
OWNER’S MANUAL
INSTALLATION
4.
Continued
Dual Burner Premium Aged
Split Oak Models
5.
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
Each log is marked with a number. These
numbers will help you identify the log when
installing. It is very important to install
these logs exactly as instructed. Do not
modify logs. Only use logs supplied with
heater.
1. Place the base of the middle log (#1) in
the U-shaped slots of the grate base.
The cutout on the right of the middle
log should fit over the burner (see Figure 22). Make sure the front of the
middle log is resting on the tabs of the
grate base and the cutout area is centered over the burner “U” bend.
2. Locate pegs on the bottom of back log
(#2). Slide these pegs into the holes in
the grate base behind the burner (see
Figure 23).
3. Place crossover log (#3) onto the pin (right)
on middle log (#1) and into the recess of
the back log (#2). See Figure 24.
6.
Locate the notches in the bottom of the
front log (#4). Place the front log on
the grate fingers. Make sure the notches
of the front log line up with the grate
fingers. See Figure 25.
With knot to right side, place smaller
log piece (#5) over the pin on the left
side of the middle log. The smaller log
will rest on front log against the "knot"
on the left. See Figure 26.
Place lava rock around base of heater.
Do not put lava rock on logs on burner.
Front Log (#4)
Notches
Back Log (#2)
Hole in
Grate Base
Peg
Grate Fingers
Figure 25 - Installing Front Log (#4)
Log Piece (#5)
Burner
Figure 23 - Installing Back Log (#2)
Peg
Crossover Log
(#3)
Middle Log (#1)
Recess
Peg
Tab
Figure 26 - Installing Log Piece (#5)
Burner
“U” Bend
U-Shaped
Slot
Figure 22 - Installing Middle Log (#1)
104340
Figure 24 - Installing Crossover Log (#3)
15
Continued
VENT-FREE NATURAL GAS LOG HEATER
Back Log (#1)
INSTALLATION
Crossover
Log (#3)
Continued
Single Burner Mountain Oak
Models
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
Each log is marked with a number. These
numbers will help you identify the log when
installing. It is very important to install
these logs exactly as instructed. Do not
modify logs. Only use logs supplied with
heater.
1. Place the back log (#1) onto the back
of the burner. Make sure the log sits
down into the hole in the grate and leans
forward onto the two posts in front of
the log (see Figure 27).
2. Locate the notches on the underside of
the front log (#2). Also notice the recesses on the back of log #2. Slide the
notches over the tabs on the grate base
and the front posts into the recesses on
the back (see Figure 28).
3. Place the crossover log (#3) on top of
the back log and front log. Make sure
the crossover log is seated into the
notches on top of the back and front
logs (see Figure 29).
4. Add lava rock around base of heater.
Do not put lava rock on logs or burner.
Hole in
Grate
Notch
Post
Notch
Figure 27 - Installing Back Log
Front Log
(#2)
Figure 29 - Installing Crossover Log
Recess
Notch
Tabs on
Grate Base
Post
Figure 28 - Installing Front Log
16
104340
OWNER’S MANUAL
OPERATING
HEATER
4.
LIGHTING
INSTRUCTIONS
Manually-Controlled Models
WARNING:
• 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 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.
FOR YOUR SAFETY
READ BEFORE
LIGHTING
WARNING: If you do not follow these instructions exactly, a
fire or explosion may result causing property 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 department.
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn
by hand, don’t try to repair it, call a
qualified service technician or gas
supplier. Force or attempted repair
may result in a fire or explosion.
D. Do not use this appliance if any part
has been under water. Immediately
call a qualified service technician to
inspect the appliance and to replace
any part of the control system and
any gas control which has been under water.
5.
6.
NOTICE: During initial operation
of new heater, burning 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.
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.
7.
8.
WARNING: Damper handle
will be hot if heater has been
running.
1.
2.
3.
STOP! Read the safety information,
column 1.
Make sure manual shutoff valve is
fully open.
Press in and turn control knob clockwise Clockwise to the OFF position.
HI
Wait five (5) minutes to clear out any
gas. Then smell for gas, including
near the floor. If you smell gas,
STOP! Follow “B” in the safety information above. If you don’t smell
gas, go to the next step.
Slightly depress and turn control knob
counterclockwise C-clockwise to the PILOT position. Press in control knob
for five (5) seconds (see Figure 30).
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. This will allow air to
bleed from the gas system.
With control knob pressed in, press
and release ignitor button. This will
light pilot. The pilot is attached to the
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, page 18.
Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob.
Note: If pilot goes out, repeat steps
3 through 7. If control knob does not
pop out when released, contact a
qualified service person or gas supplier for repairs.
Slightly depress and turn control
knob counterclockwise C-clockwise to
desired heating level. The burner
should light. Set control knob to any
heat level between HI and LO.
WARNING: Do not operate
heater between PILOT and HIGH
positions.
Ignitor Electrode
Thermopile
Thermocouple
PILOT
OFF
LO
Ignitor Button
Control Knob
Figure 30 - Control Knob and Ignitor
Button Location
104340
17
Pilot
Burner
Figure 31 - Pilot
Continued
VENT-FREE NATURAL GAS LOG HEATER
OPERATING
HEATER
Continued
VARIABLE CONTROL
OPERATION
The variable control valve can be set to
any heat setting and flame height desired,
by simply turning the control knob until
that setting is attained. Even the lowest
setting provides realistic, dancing yellow
flames. Selecting higher settings produces
greater heat output. This results in increased heating comfort.
CAUTION: Do not try to adjust
heating levels by using the
manual shutoff valve.
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1.
2.
3.
Press in and turn control knob clockwise Clockwise to the HIGH position.
Turn control knob clockwise Clockwise
to the pilot position.
Press in control knob and turn clockwise Clockwise to the OFF position.
Shutting Off Burners Only (pilot
stays lit)
1.
2.
Turn control knob clockwise Clockwise
to the HIGH position.
Press in and turn control knob clockwise Clockwise to the pilot position.
MANUAL LIGHTING
PROCEDURE
1.
2.
3.
Follow steps 1 through 5 under Lighting Instructions, page 17.
Depress control knob and light pilot
with match.
Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob. Now
follow step 8 on page 17.
Thermostatically-Controlled
Models
LIGHTING
INSTRUCTIONS
FOR YOUR SAFETY
READ BEFORE
LIGHTING
WARNING
• 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 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.
WARNING: If you do not follow these instructions exactly, a
fire or explosion may result causing property 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 department.
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn
by hand, don’t try to repair it, call a
qualified service technician or gas
supplier. Force or attempted repair
may result in a fire or explosion.
D. Do not use this appliance if any part
has been under water. Immediately
call a qualified service technician to
inspect the appliance and to replace
any part of the control system and
any gas control which has been under water.
NOTICE: During initial operation
of new heater, burning 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.
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.
2.
3.
4.
18
STOP! Read the safety information,
column 2.
Make sure manual shutoff valve is
fully open.
Turn control knob clockwise Clockwise
to the OFF position.
Wait five (5) minutes to clear out any
gas. Then smell for gas, including
near the floor. If you smell gas,
STOP! Follow “B” in the safety information above. If you don’t smell
gas, go to the next step.
104340
OWNER’S MANUAL
OPERATING
HEATER
MANUAL LIGHTING
PROCEDURE
Continued
6.
7.
8.
Turn control knob counterclockwise
C-clockwise
to the PILOT position.
Press in control knob for five (5) seconds (see Figure 32).
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 less. This will allow
air to bleed from the gas system.
• If control knob does not pop out
when released, contact a qualified
service person or gas supplier for
repairs.
With 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.
Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob.
Note: If pilot goes out, repeat steps
3 through 7. This heater has a safety
interlock system. Wait one (1) minute
for system to reset before lighting
pilot again.
Turn control knob counterclockwise
to desired heating level. The
C-clockwise
burners should light. Set control
knob to any heat level between HI
and LO.
CAUTION: Do not try to adjust
heating levels by using the
manual shutoff valve.
LO
5.
1.
HI
OFF
Pilot
Control Knob
Ignitor Button
Figure 32 - Control Knob and Ignitor Button Location
Ignitor Electrode
Thermopile
Thermocouple
2.
3.
Follow steps 1 through 5 under Lighting Instructions, pages 18 and 19.
Depress control knob and light pilot
with match.
Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob. Now
follow step 8.
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Pilot Burner
Figure 34 shows a correct pilot flame pattern.
Figure 35 shows an incorrect pilot flame
pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the
thermocouple to cool. When the thermocouple cools, the heater will shut down.
Figure 33 - Pilot
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1.
Turn control knob clockwise
to the OFF position.
Clockwise
Shutting Off Burners Only (pilot
stays lit)
1.
Turn control knob clockwise
to the PILOT position.
Clockwise
If pilot flame pattern is incorrect, as shown
in Figure 35
• turn heater off (see To Turn Off Gas to
Appliance, page 18 [manually-controlled
models] or page 19 [thermostat-controlled models])
• see Troubleshooting, pages 21 through 23
Thermocouple
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 comfort setting will vary by
household depending upon the amount of
space to be heated, the output of the
central heating system, etc.
Pilot Burner
Figure 34 - Correct Pilot Flame Pattern
Thermocouple
Note: Selecting the Hi setting with the
control knob will cause the burners to
remain fully on, without modulating down
in most cases.
Pilot Burner
Figure 35 - Incorrect Pilot Flame Pattern
104340
19
VENT-FREE NATURAL GAS LOG HEATER
INSPECTING
BURNERS
Continued
BURNER PRIMARY AIR
HOLES
Air is drawn into the burner through the
holes in the fitting at the entrance to the
burner. These holes may become blocked
with dust or lint. Periodically inspect these
holes for any blockage and clean as necessary. Blocked air holes will create soot.
MAIN BURNER
Periodically inspect all burner flame holes
with the heater running. All slotted burner
flame holes should be open with yellow
flame present. All round burner flame holes
should be open with a small blue flame
present. Some burner flame holes may become blocked by debris or rust, with no flame
present. If so, turn off heater and let cool,
Either remove blockage or replace burner.
Blocked burner flame holes will create soot.
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner, and circulating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a qualified service person. Heater may
need more frequent cleaning due
to excessive lint from carpeting,
bedding material, etc.
CLEANING BURNER
INJECTOR HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper
amount of air to mix with the gas. This
provides a clean burning flame. Keep these
holes clear of dust, dirt, and lint. Clean these
air inlet holes prior to each heating season.
Blocked air holes will create soot. We recommend that you clean the unit every 2,500
hours of operation or every three months.
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust
and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI.
Your local computer store, hardware store, or
home center may carry compressed air in a
can. You can use a vacuum cleaner in the
blow position. If using compressed air in a
can, please follow the directions on the can.
If you don't follow directions on the can, you
could damage the pilot assembly.
1. Shut off the unit, including the pilot.
Allow the unit to cool for at least thirty
minutes.
2. Inspect burner, pilot, and primary air
inlet holes on injector holder for dust
and dirt (see Figure 36).
3. Blow air through the ports/slots and
holes in the burner.
4. Check the injector holder located at the
end of the burner tube again. Remove
any large particles of dust, dirt, lint, or
pet hairs with a soft cloth or vacuum
cleaner nozzle.
5. Blow air into the primary air holes on
the injector holder.
6. In case any large clumps of dust have
now been pushed into the burner repeat
steps 3 and 4.
Clean the pilot assembly also. A yellow tip
on the pilot flame indicates dust and dirt in
the pilot assembly. There is a small pilot air
inlet hole about two inches from where the
pilot flame comes out of the pilot assembly
(see Figure 37). With the unit off, lightly
blow air through the air inlet hole. You may
blow through a drinking straw if compressed
air is not available.
Injector Holder
(May Be Brass or
Aluminum Depending on Model)
Burner
Tube
Ports/Slots
Pilot Assembly
Pilot Air
Inlet Hole
Figure 37 - Pilot Inlet Air Hole
LOGS
• If you remove logs for cleaning, refer to
Installing Logs, pages 14 through 16, to
properly replace logs.
• Replace log(s) if broken or chipped
(dime-sized or larger).
MAIN BURNER
Periodically inspect all burner flame holes
with the heater running. All slotted burner
flame holes should be open with yellow
flame present. All round burner flame holes
should be open with a small blue flame
present. Some burner flame holes may become blocked by debris or rust, with no flame
present. If so, turn off heater and let cool,
Either remove blockage or replace burner.
Blocked burner flame holes will create soot.
Burner
Tube
Primary Air Inlet
Holes (Shape of
Holes May Vary
by Model)
Figure 36 - Injector Holder On Outlet
Burner Tube
20
104340
OWNER’S MANUAL
TROUBLESHOOTING
WARNING: Turn off and unplug heater and let cool before
servicing. Only a qualified service person should service and
repair heater.
Note: For additional help, visit DESA
International’s Technical Service web
site at www.desatech.com.
Note: All troubleshooting items are listed in
order of operation.
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot. This can damage ODS/
pilot unit.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
When ignitor button is pressed, there is no
spark at ODS/pilot
1. Ignitor electrode not connected to ignitor cable
2. Ignitor cable pinched or wet
1. Reconnect ignitor cable
3. Piezo ignitor nut is loose
4.
5.
6.
7.
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition
Broken ignitor cable
Bad piezo ignitor
Ignitor electrode broken
Ignitor electrode positioned wrong
1. Gas supply turned off or manual shutoff
valve closed
2. Control knob not in PILOT position
3. Control knob not pressed in while in PILOT position
4. Air in gas lines when installed
5. ODS/pilot is clogged
6. Gas regulator setting is not correct
ODS/pilot lights but flame goes out when
control knob is released
1. Control knob not fully pressed in
2. Control knob not pressed in long enough
3. Manual shutoff valve not fully open
4. Pilot flame not touching thermocouple,
which allows thermocouple to cool,
causing pilot flame to go out. This problem could be caused by one or both of
the following:
A) Low gas pressure
B) Dirty or partially clogged ODS/pilot
5. Thermocouple connection loose at control valve
6. Thermocouple damaged
7. Control valve damaged
www.desatech.com
104340
21
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Tighten nut holding piezo ignitor to base
panel of log set. Nut is located behind
base panel.
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace piezo ignitor
7. Replace piezo ignitor
1. Turn on gas supply or open manual
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is removed
5. Clean ODS/pilot (see Cleaning and
Maintenance, page 20) or replace ODS/
pilot assembly
6. Replace gas regulator
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. Fully open manual shut-off valve
4. A) Contact local natural gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 20) or replace ODS/
pilot assembly
5. Hand tighten until snug, then tighten 1/
4 turn more
6. Replace thermocouple
7. Replace control valve
Continued
VENT-FREE NATURAL GAS LOG HEATER
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Burner does light after ODS/pilot is lit
1. Burner orifice clogged
1. Clean burner (see Cleaning and Maintenance, page 20) or replace burner orifice
2. Contact local natural gas company
3. Replace burner orifice
2. Inlet gas pressure is too low
3. Burner orifice diameter is too small
Delayed ignition burner
1. Manifold pressure is too low
2. Burner orifice clogged
1. Contact local natural gas company
2. Clean burner (see Cleaning and Maintenance, page 20) or replace burner orifice
Burner backfiring during combustion
1. Burner orifice is clogged or damaged
1. Clean burner (see Cleaning and Maintenance, page 20) or replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
2. Damaged burner
3. Gas regulator defective
Slight smoke or odor during initial operation
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing processes
and logs curing
1. Check burner for dirt and debris. If
found, clean burner (see Cleaning and
Maintenance, page 20)
2. Replace gas regulator
3. Problem will stop after a few hours of
operation
Moisture/condensation noticed on windows
1. Not enough combustion/ventilation air
1. Refer to Air for Combustion and Ventilation requirements (page 4)
Heater produces a whistling noise when
burner is lit
1. Turning control knob to HI position
when burner is cold
2. Air in gas line
1. Turn control knob to LO position and
let warm up for a minute
2. Operate burner until air is removed from
line. Have gas line checked by local
natural gas company
3. Observe minimum installation clearances (see pages 7 through 9)
4. Clean burner (see Cleaning and Maintenance, page 20) or replace burner orifice
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice
White powder residue forming within burner
box or on adjacent walls or furniture
1. When heated, vapors from furniture polish, wax, carpet cleaners, etc. turn into
white powder residue
1. Turn heater off when using furniture
polish, wax, carpet cleaners, or similar
products
www.desatech.com
22
104340
OWNER’S MANUAL
TROUBLESHOOTING
Continued
:
WARNING If you smell gas
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• 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.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning
supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles,
etc., create fumes. These fumes may mix with combustion air and create odors. These
odors will disappear over time.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Heater produces a clicking/ticking noise
just after burner is lit or shut off
1. Metal expanding while heating or contracting while cooling
1. This is common with most heaters. If
noise is excessive, contact qualified service person
Heater produces unwanted odors
1. Heater burning vapors from paint, hair
spray, glues, cleaners, chemicals, new
carpet, etc. (See IMPORTANT statement above)
2. Gas leak. See Warning statement at
top of page
1. Open window and ventilate room. Stop
using odor causing products while heater
is running
Heater shuts off in use (ODS operates)
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Open window and/or door for ventilation
2. Contact local natural gas company
3. Clean ODS/pilot (see Cleaning and
Maintenance, page 20)
Gas odor even when control knob is in OFF
position
1. Gas leak. See Warning statement at
top of page
2. Control valve defective
1. Locate and correct all leaks (see Checking Gas Connections, page 13)
2. Replace control valve
Gas odor during combustion
1. Foreign matter between control valve
and burner
2. Gas leak. See Warning statement at
top of page
1. Take apart gas tubing and remove foreign matter
2. Locate and correct all leaks (see Checking Gas Connections, page 13)
Logs set cycles to pilot, but room temperature drops to a lower than ideal level before
log set comes back on
1. Thermostat sensing bulb needs to be repositioned
1. Reposition thermostat sensing bulb (see
instructions for Optional Positioning of
Thermostat Sensing Bulb, page 24
www.desatech.com
104340
23
2. Locate and correct all leaks (see Checking Gas Connections, page 13)
VENT-FREE NATURAL GAS LOG HEATER
OPTIONAL
POSITIONING OF
THERMOSTAT
SENSING BULB
For Masonry and Factorybuilt Metal Fireplace
If your log set cycles to pilot, but the room
temperature drops to a lower than ideal
comfort level before the log set comes back
on, you may want to reposition the thermostat sensing bulb.
The thermostat sensing bulb is located near
the gas valve assembly on the mounting
bracket. This location allows the thermostat
to keep the room temperature at an ideal
comfort level for most fireplace applications. For positioning the thermostat sensing bulb elsewhere, an adhesive-backed
mounting clip is available.
Tools needed: 1/4" hex driver or socket
1. Remove logs. Locate the gas valve assembly and thermostat sensing bulb
(see Figure 38).
2. With 1/4" hex driver or socket, loosen
the thermostat screw. Carefully slide
the thermostat sensing bulb out of the
retaining clamp (see Figure 40).
Note: Do not remove the screw. Make
sure you tighten the screw after removing the thermostat sensing bulb.
IMPORTANT: Do not force or bend the
thermostat sensing bulb or capillary.
3. The thermostat sensing bulb may be
located to the lower right front side of
fireplace. Determine location of sensing bulb, but do not mount sensing bulb
until step 5. If you have a masonry fireplace, see Figure 41 for location. If you
have a factory-built metal fireplace, see
Figure 42 for location. If your fireplace
has glass doors, position sensing bulb
directly behind door gap on right bottom side (see Figure 43).
4.
The mounting clip must be a minimum
of 3" from bottom of fireplace to prevent crimping of capillary. Once you
have decided on a location, clean the
area thoroughly. Remove the paper
backing from the adhesive on back of
mounting clip. Press the clip into the
new location so that the thermostat
sensing bulb will be positioned vertically with the capillary at the bottom
(see Figure 44). Slide the thermostat
sensing bulb into the clip.
IMPORTANT: Do not crimp capillary.
Thermostat
Sensing Bulb
Adhesivebacked
Mounting Clip
Thermostat
Sensing
Bulb
Gas Valve
Assembly
Q,¢¢Q,
¢Q,¢Q,
¢Q,¢Q,
¢Q,¢Q,
Figure 41 - Locating Thermostat Sensing
Bulb on Masonry Fireplace
Adhesivebacked
Mounting
Clip
Figure 42 - Locating Thermostat Sensing
Bulb on Factory-built Metal Fireplace
Thermostat
Sensing Bulb
Mounting
Bracket
Figure 38 - Location of Gas Valve Assembly and Thermostat Sensing Bulb
Thermostat
Sensing
Bulb
Adhesivebacked
Mounting
Clip
Figure 39 - Adhesive-backed Mounting
Clip
Thermostat Screw
Capillary
Glass Doors
Figure 43 - Installing Thermostat Sensing
Bulb behind Glass Doors
Thermostat
Sensing Bulb
Retaining
Clamp
Capillary
Thermostat
Sensing Bulb
Figure 40 - Removing Thermostat Sensing Bulb
24
Adhesivebacked
Mounting
Clip
Do Not Crimp
Capillary
Figure 44 - Positioning the Thermostat
Sensing Bulb in the Vertical Position with
the Capillary at the Bottom
104340
OWNER’S MANUAL
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
When Gas Quality Is Bad
• pilot will not stay lit
• burners will produce flames and soot
• heater will backfire when lit
You may feel your gas pressure is too low or
gas quality is bad. If so, contact your local
natural gas supplier.
TECHNICAL
SERVICE
REPLACEMENT
PARTS
You may have further questions about installation, operation, or troubleshooting.
Note: Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
If so, contact DESA International’s Technical Service Department at 1-800-DESA LOG
(1-800-337-2564).
You can also visit DESA International’s
Technical Services web site at
www.desatech.com.
SPECIFICATIONS
DUAL BURNER YELLOW FLAME AND PREMIUM AGED SPLIT
OAK MODELS
18" Model
24" Models
30" Models
Btu (Variable)
16,000/30,000
20,000/39,000
20,000/39,0000
Type Gas
Only
Natural Gas Only
Natural Gas Only
Natural Gas
Ignition
Piezo
Piezo
Piezo
Manifold Pressure
3.5" W.C.
3.5" W.C.
3.5" W.C.
Inlet Gas
Pressure (in. of water)
Maximum
Minimum*
10.5"
5"
10.5"
5"
10.5"
5"
Shipping Weight
36 lbs.
38 lbs.
40 lbs.
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
contact your nearest Parts Central (see page
26) or call DESA International’s Technical
Service Department at 1-800-DESA LOG
(1-800-337-2564) for referral information.
When calling DESA International, have
ready
• your name
• your address
• model number of your heater
• how heater was malfunctioning
• type of gas used (propane or natural gas)
• purchase date
Usually, we will ask you to return the defective part to the factory.
PARTS NOT UNDER
WARRANTY
Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), contact your nearest Parts Central
(see page 26) or call DESA International’s
Parts Department at 1-800-972-7879 for
referral information.
When calling DESA International, have
ready
• model number of your heater
• the replacement part number
* For the purpose of input adjustment
SINGLE BURNER MOUNTAIN OAK MODELS
18" Model
24" Model
Btu (Variable)
16,000/27,000
16,000/31,500
Type Gas
Natural Gas Only
Natural Gas Only
Ignition
Piezo
Piezo
Manifold Pressure
3.5" W.C.
3.5" W.C.
Inlet Gas
Pressure (in. of water)
Maximum
Minimum*
10.5"
5"
10.5"
5"
Shipping Weight
38 lbs.
40 lbs.
* For the purpose of input adjustment
104340
PARTS UNDER WARRANTY
25
VENT-FREE NATURAL GAS LOG HEATER
PARTS CENTRAL
These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original replacement
parts and accessories.
Baltimore Electric
Washer Equipment Co.
Halco Enterprises
1348 Dixwell Avenue
Hamden, CT 06514-0322
1-800-397-7553
203-248-7553
Parts Department
1715 Main Street
Kansas City, MO 64108-2195
KS, MO, AR
816-842-3911
208 Carter Drive, Unit 21
West Chester, PA 19382-4500
610-430-7717
1-800-368-0803
East Coast Energy Products
Portable Heater Parts
LA Porte’s Parts & Service
707 Broadway
W. Long Branch, NJ 07764-1542
732-870-8809
1-800-755-8809
2444 N. 5th Street
Hartsville, SC 29550-7704
803-332-0191
Parts Department
Tarantin Tank Co.
Cans Unlimited, Inc.
P.O. Box 6129
Freehold, NJ 07728-6129
908-780-9340
P.O. Box 645
Taylor, SC 29687-0013
All States
803-879-3009
1-800-845-5301
342 N. County Rd. 400 East
Valparaiso, IN 46383-9704
All States
219-462-7441
1-800-362-6951
FBD
1349 Adams Street
Bowling Green, KY 42103
502-846-1199
1-800-654-8534
Fax: 1-800-846-0090
Four Flags Power Products
1115 Stateline Road
Niles, MI 49120-4728
616-684-2697
1-800-268-4983
Parts Only
Master Parts Dist.
1251 Mound Ave NW
Grand Rapids, MI 49504-2672
616-791-8270
1-800-446-1446
1-800-922-0724
Heater & Fireplace Store
1922 N Route 9
Cape May Court, NJ 08210-1110
609-624-0678
Parts Department
Dayton Hardware
P.O. Box 275
North Dayton Station
Dayton, OH 45404-0275
All States
937-258-3721
OH 1-800-762-3426
26
104340
OWNER’S MANUAL
ACCESSORIES
Purchase these fireplace accessories from
your local dealer. If they can not supply
these accessories, call DESA International’s
Sales Department at 1-800-972-7879 for
referral information. You can also write to
the address listed on the back page of this
manual.
DAMPER CLAMP - GA6080
(Not Shown)
For variably-controlled models. Permanently opens chimney flue damper for vented
operation (see Installing Damper Clamp
Accessory for Vented Operation, page 10).
FIREPLACE HOOD
Black - GA6050
Brass - GA6052
Antique Brass - GA6053
For all models. Helps deflect heat away
from mantel or wall above fireplace.
MANUAL SHUTOFF VALVE GA5010
For all models. Manual shutoff valve with
1/8" NPT tap. Fits 1/2" NPT pipe.
104340
27
LAVA ROCK - GA6060
(Not Shown)
For all models. Order when additional rock
is desired. (3 lb. bag)
VENT-FREE NATURAL GAS LOG HEATER
ILLUSTRATED
PARTS
BREAKDOWN
1
Variable Manually-Controlled
Smoky Mountain Oak Models
4
CGD3018N
CGD3924N
CGD3930N
3
2
20
18
12
23
19
11
10
13
7
8
6
21
9
21
5
14
22
18
21
19
17
15
16
21
28
104340
OWNER’S MANUAL
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the
instructions listed under Replacement Parts on page 25 of this manual.
Variable Manually-Controlled
Smoky Mountain Oak Models
CGD3018N
CGD3924N
CGD3930N
KEY
NO.
CGD3018N
CGD3924N
CGD3930N
PART NUMBER
PART NUMBER
PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
103008-02
103009-02
103010-02
103011-02
102775-04CK
102844-02
102966-02
098867-14
102798-01
102779-03
099056-26
102843-01
102980-01
102568-07
098508-01
098354-01
102445-01
099387-08
098271-07
104285-01
M11084-38
098276-01
098249-01
103008-01
103009-01
103010-01
103011-01
102775-01CK
102844-01
102966-01
098867-14
102798-01
102779-01
099056-16
102843-01
102772-01
102568-05
098508-01
098354-01
102445-01
099387-08
098271-07
104285-01
M11084-38
098276-01
098249-01
103008-03
103009-03
103010-03
103011-01
102775-03CK
102844-01
102966-01
098867-14
102798-01
102779-01
099056-16
102843-01
102772-01
102568-05
098508-01
098354-01
102445-01
099387-08
098271-07
104285-01
M11084-38
098276-01
098249-01
Back Log (#1)
Middle Log (#2)
Front Log (#3)
Crossover Log (#4)
Painted Base Assembly
Lower Bracket
Upper Bracket
Gas Regulator
Inlet Tube
Outlet Burner Tube
Burner Orifice Injector
Burner Clip
Burner
Control Valve
Valve Retainer Nut
Control Knob
Piezo Ignitor
Pilot Tube
Ignitor Cable
ODS Pilot
Hex Screw, #8-18 x .38
Hex Head Plug, 1/8 NPT
Nut, M5
QTY.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
11
1
2
PARTS AVAILABLE — NOT SHOWN
100563-01
101055-02
100565-01
100639-01
101449-04
101137-02
104310-02
GA6060
104340
100563-01
101055-02
100565-01
100639-01
101449-04
101137-02
104310-02
GA6060
100563-01
101055-02
100565-01
100639-01
101449-04
101137-02
104310-02
GA6060
29
Warning Plate
Lighting Instructions Plate
Warning Plate Fastener
Caution Decal
Control Position Decal
Hardware Kit
Information Video
Lava Rock
1
1
1
1
1
1
1
1
VENT-FREE NATURAL GAS LOG HEATER
ILLUSTRATED
PARTS
BREAKDOWN
3
5
Thermostatically-Controlled
Premium Aged Split Oak Models
CGB3924NT
CGB3930NT
1
2
4
20
12
18
22
19
11
10
13
23
7
9
14
8
6
21
15
21
21
16
24
21
19
17
21
30
104340
OWNER’S MANUAL
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the
instructions listed under Replacement Parts on page 25 of this manual.
Thermostatically-Controlled
Premium Aged Split Oak Models
CGB3924NT
CGB3930NT
KEY
NO.
CGB3924NT
CGB3930NT
PART NUMBER
PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
104897-01
104898-01
104899-01
104896-01
104900-01
102844-01
102966-01
098867-14
102981-01
102983-01
099056-16
102843-01
102772-01
101329-20
102979-01
098544-01
102445-01
099387-09
098271-07
104285-01
M11084-38
098249-01
099211-01
102775-05CK
104897-02
104898-02
104899-02
104896-02
104900-02
102844-01
102966-01
098867-14
102981-01
102983-01
099056-16
102843-01
102772-01
101329-20
102979-01
098544-01
102445-01
099387-09
098271-07
104285-01
M11084-38
098249-01
099211-01
102775-07CK
Middle Log (#1)
Back Log (#2)
Crossover Log (#3)
Front Log (#4)
Log Piece (#5)
Lower Bracket
Upper Bracket
Gas Regulator
Inlet Tube
Outlet Burner Tube
Burner Orifice Injector
Burner Clip
Burner
Thermostat Gas Valve Assembly
Thermostat Bracket
Thermobulb Clip
Piezo Ignitor
Pilot Tube
Ignitor Cable
ODS Pilot
Hex Screw, #8-18 x .38
Nut, M5
Hex Screw, 10-16 x 2.50
Painted Base Assembly
QTY.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
15
2
2
1
PARTS AVAILABLE — NOT SHOWN
100563-01
101054-01
100565-01
100639-01
101137-02
104310-02
GA6060
104340
100563-01
101054-01
100565-01
100639-01
101137-02
104310-02
GA6060
31
Warning Plate
Lighting Instructions Plate
Warning Plate Fastener
Caution Decal
Hardware Kit
Information Video
Lava Rock
Clip, Thermostat
1
1
1
1
1
1
1
1
VENT-FREE NATURAL GAS LOG HEATER
ILLUSTRATED
PARTS
BREAKDOWN
1
Thermostatically-Controlled
Smoky Mountain Oak Models
4
CGD3018NT
CGD3924NT
CGD3930NT
3
2
20
12
22
18
19
11
10
13
7
23
9
14
8
6
21
15
21
21
16
5
21
19
17
21
32
104340
OWNER’S MANUAL
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow
the instructions listed under Replacement Parts on page 25 of this manual.
Thermostatically-Controlled
Smoky Mountain Oak Models
CGD3018NT
CGD3924NT
CGD3930NT
KEY
NO.
CGD3018NT
CGD3924NT
CGD3930NT
PART NUMBER
PART NUMBER
PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
103008-02
103009-02
103010-02
103011-02
102775-09CK
102844-02
102966-02
098867-14
102981-01
102983-03
099056-26
102843-01
102980-01
101329-21
102979-02
098544-01
102445-01
099387-09
098271-07
104285-01
M11084-38
098249-01
099211-01
103008-01
103009-01
103010-01
103011-01
102775-05CK
102844-01
102966-01
098867-14
102981-01
102983-01
099056-16
102843-01
102772-01
101329-20
102979-01
098544-01
102445-01
099387-09
098271-07
104285-01
M11084-38
098249-01
099211-01
103008-03
103009-03
103010-03
103011-01
102775-07CK
102844-01
102966-01
098867-14
102981-01
102983-01
099056-16
102843-01
102772-01
101329-20
102979-01
098544-01
102445-01
099387-09
098271-07
104285-01
M11084-38
098249-01
099211-01
Back Log (#1)
1
Middle Log (#2)
1
Front Log (#3)
1
Crossover Log (#4)
1
Painted Base Assembly
1
Lower Bracket
1
Upper Bracket
1
Gas Regulator
1
Inlet Tube
1
Outlet Burner Tube
1
Burner Orifice Injector
1
Burner Clip
1
Burner
1
Thermostat Gas Valve Assembly 1
Thermostat Bracket
1
Thermobulb Clip
1
Piezo Ignitor
1
Pilot Tube
1
Ignitor Cable
1
ODS Pilot
1
Hex Screw, #8-18 x .38
15
Nut, M5
2
Hex Screw, 10-16 x 2.50
2
QTY.
PARTS AVAILABLE — NOT SHOWN
100563-01
101054-01
100565-01
100639-01
101137-02
104310-02
GA6060
104340
100563-01
101054-01
100565-01
100639-01
101137-02
104310-02
GA6060
100563-01
101054-01
100565-01
100639-01
101137-02
104310-02
GA6060
33
Warning Plate
Lighting Instructions Plate
Warning Plate Fastener
Caution Decal
Hardware Kit
Information Video
Lava Rock
Clip, Thermostat
1
1
1
1
1
1
1
1
VENT-FREE NATURAL GAS LOG HEATER
ILLUSTRATED
PARTS
BREAKDOWN
1
Variable Manually-Controlled
Mountain Oak Models
CY2718N
CY3124N
2
3
20
18
22
19
10
23
11
6
12
7
5
8
9
21
21
4
13
22
18
21
19
16
14
15
34
104340
OWNER’S MANUAL
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the
instructions listed under Replacement Parts on page 25 of this manual.
Variable Manually-Controlled
Mountain Oak Models
CY2718N
CY3124N
KEY
NO.
CY2718N
CY3124N
PART NUMBER
PART NUMBER
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
103729-04
103730-04
103731-04
102775-02CK
102844-01
102966-01
098867-14
102780-01
102798-01
099056-20
102843-01
102963-01
102568-07
098508-01
098354-01
102445-01
098249-01
099387-08
098271-07
104285-01
M11084-38
098276-01
099553-01
103729-03
103730-03
103731-03
102775-01CK
102844-01
102966-01
098867-14
102780-01
102798-01
099056-18
102843-01
102773-01
102568-07
098508-01
098354-01
102445-01
098249-01
099387-08
098271-07
104285-01
M11084-38
098276-01
099553-01
Back Log (#1)
Front Log (#2)
Crossover Log (#3)
Painted Base Assembly
Lower Bracket
Upper Bracket
Gas Regulator
Outlet Burner Tube
Inlet Tube
Burner Orifice Injector
Burner Clip
Burner
Control Valve
Valve Retainer Nut
Control Knob
Piezo Ignitor
Nut, M5
Pilot Tube
Ignitor Cable
ODS Pilot
Screw, Hex Head (#8-18 x .38)
Hex Head Plug, 1/8" NPT
Shield, Pilot
QTY.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
11
1
1
PARTS AVAILABLE — NOT SHOWN
100563-01
101055-02
100565-01
100639-01
101449-04
101137-02
104310-02
GA6060
104340
100563-01
101055-02
100565-01
100639-01
101449-04
101137-02
104310-02
GA6060
35
Warning Plate
Lighting Instructions Plate
Warning Plate Fastener
Caution Decal
Control Position Decal
Hardware Kit
Information Video
Lava Rock
1
1
1
1
1
1
1
1
WARRANTY INFORMATION
KEEP THIS WARRANTY
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written
warranty. We make no other warranty, expressed or implied.
LIMITED WARRANTY
COMFORT GLOW VENT-FREE NATURAL GAS LOG HEATERS
DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first
purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
To make a claim under this warranty the Bill of Sale or cancelled check must be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater
to proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST
be obtained through authorized dealers of this product and/or DESA International who will provide original factory replacement parts.
Failure to use original factory replacement parts voids this warranty. The heater MUST be installed by a qualified installer in accordance
with all local codes and instructions furnished with the unit.
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that fail or become
damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost,
labor, transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT;
THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE TO TWO (2) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE;
AND DESA INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND
DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential
damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write:
INTERNATIONAL
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
104340 01
NOT A UPC
104340-01
Rev. C
03/99