Desa Water Heater CGD3018N User Manual

YELLOW FLAME DESIGN  
UNVENTED (VENT-FREE)  
NATURAL GAS LOG HEATER  
(Manually-Controlled Models Also Designed Certified as Vented Decorative Appliance)  
This appliance may be installed in an aftermarket* manufactured (mobile) home, where  
not prohibited by state or 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  
OWNER’S OPERATION AND INSTALLATION MANUAL  
18", 24", and  
30" Variable  
Manually-  
Controlled  
Models  
24"  
Thermostatically-  
Controlled Model  
CGD3924NT  
CGD3018N  
CGD3924N  
CGD3930N  
®
WARNING:Improperinstallation,adjust-  
ment,alteration,service,ormaintenance  
can cause injury or property damage.  
Refer to this manual for correct installa-  
tion and operational procedures. For  
assistance or additional information  
consult a qualified installer, service  
agency, or the gas supplier.  
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 build-  
ing.  
• Immediately call your gas supplier  
from a neighbor’s phone. Follow the  
gas supplier’s instructions.  
WARNING: This gas log set is for instal-  
lation in a masonry solid fuel burning  
fireplace or a U.L. listed manufactured  
solid fuel burning fireplace.  
WARNING: This is an unvented gas-  
fired heater. It uses air (oxygen) from  
the room in which it is installed. Provi-  
sionsforadequatecombustionandven-  
tilation air must be provided. Refer to  
Air for Combustion and Ventilation sec-  
tion in this manual.  
• If you cannot reach your gas sup-  
plier, call the fire department.  
— Installation and service must be per-  
formed by a qualified installer, service  
agency, or the gas supplier.  
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WARNINGS Continued  
SAFETY  
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.  
2. If you smell gas  
INFORMATION  
Continued  
• 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  
3. This heater shall not be installed in a bedroom or bathroom.  
4. Never install the heater  
• in a recreational vehicle  
• where curtains, furniture, clothing, or other flammable objects are less than 36  
inches from the front, top, or sides of the heater  
• in high traffic areas  
• in windy or drafty areas  
5. Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be  
cleanedofsoot,creosote,ashesandloosepaintbyaqualifiedchimneycleaner.Creosote  
willigniteifhighlyheated.Inspectchimneyfluefordamage.Ifdamaged,operateheater  
with flue damper closed.  
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 fireplace opening has vents at the bottom, you must open the vents before  
operating heater.  
7. Youmustoperatethisheaterwithafireplacescreeninplace. Makesurefireplacescreen  
is closed before running heater.  
8. 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.  
9. 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.  
10. Do not use a blower insert, heat exchanger insert or other accessory not approved for  
use with this heater.  
11. Thisheaterneedsfresh,outsideairventilationtorunproperly.Thisheaterhasanoxygen  
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 5 through  
7. If heater keeps shutting off, see Troubleshooting, pages 25 through 28.  
12. Do not run heater  
• where flammable liquids or vapors are used or stored  
• under dusty conditions  
13. Do not use this heater to cook food or burn paper or other objects.  
14. Never place any objects on the heater.  
15. 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 shut-down. Allow surface to cool before touching.  
16. Carefully supervise young children when they are in the room with heater.  
17. 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.  
18. Donotoperateheaterifanylogisbroken.Donotoperateheaterifalogischipped(dime-  
sized or larger).  
19. Turn heater off and let cool before servicing. Only a qualified service person should  
service and repair heater.  
20. Operating heater above elevations of 4,500 feet could cause pilot outage.  
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PRODUCT  
Crossover Log  
Back Log  
IDENTIFICATION  
Front Log  
Burner  
Middle Log  
Piezo  
Ignitor  
Control Knob  
Base Grate  
Figure 1 - Vent-Free Gas Log Heater  
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, also  
known as NFPA 54*.  
LOCAL CODES  
*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 grate.  
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  
PRODUCT  
Operation  
This heater is clean burning. It requires no outside venting. There is no heat loss out  
FEATURES 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. State and local  
codes in some areas prohibit the use of vent-free heaters. You can operate heater as  
a vented product by opening flue damper.  
Safety Device  
This heater has a pilot with an Oxygen Depletion Sensor Shutoff System (ODS).  
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.  
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AIR FOR  
COMBUSTION  
AND  
WARNING  
This heater shall not be installed in a confined space 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.  
VENTILATION  
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 fuel-burning appliances.  
PROVIDING ADEQUATE VENTILATION  
The following is exerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1,  
Section 5.3, Air for Combustion and Ventilation.  
All spaces in homes fall into one of the three following ventilation classifications:  
1. Unusually Tight Contruction; 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 continu-  
ous water vapor retarder with a rating of one perm or less with open-  
ings 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.  
If your home meets all of the three criteria above, you must provide addi-  
tional fresh air. See Ventilation Air From Outdoors, page 7.  
If your home does not meet all of the three criteria above, proceed to page 6.  
Unconfined Space  
The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines uncon-  
fined space as having a minimum air volume of 50 cubic feet (127 cubic cm) for  
each 1000 Btu/Hr input rating of all appliances in the space (cubic feet equals  
length x width x height of space). Include adjoining rooms only if there are  
doorless passageways or ventilation grills between the rooms.  
Confined Space  
The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines confined  
space as having an air volume of less than 50 cubic feet (127 cubic cm) for each  
1000 Btu/Hr input rating of all appliances in the space (cubic feet equals length  
x width x height of space). Include adjoining rooms only if there are doorless  
passageways or ventilation grills between the rooms.  
Continued  
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DETERMINING AIR FLOW FOR HEATER LOCATION  
AIR FOR  
COMBUSTION  
AND  
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.  
VENTILATION  
1. Determine the volume of the space (length x width x height).  
Continued  
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  
Gas water heater*  
Gas furnace  
Vented gas heater  
Gas fireplace logs  
Other gas appliances*  
Total  
___________________ Btu/Hr  
___________________ Btu/Hr  
___________________ Btu/Hr  
___________________ Btu/Hr  
___________________ Btu/Hr  
+ ___________________ Btu/Hr  
= ___________________ Btu/Hr  
Example: Gas water heater  
Vent-free heater  
Total  
40,000  
39,000  
79,000  
Btu/Hr  
Btu/Hr  
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 7.  
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, 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.  
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AIR FOR  
COMBUSTION  
AND  
WARNING  
If the area in which the heater may be operated is smaller than  
that defined as an unconfined space, provide adequate combus-  
tion and ventilation air by one of the methods described in the  
National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3.  
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 NFPA 54/ANSI 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. Thecombinedspacesmusthaveenoughfreshairtosupplyall  
appliances in both spaces.  
12"  
Ventilation  
Ventilation Grills  
Into Adjoining Room,  
Option 2  
Grills  
Into Adjoining  
Room,  
Or  
Remove  
Door into  
Adjoining  
Room,  
Option  
3
Option 1  
12"  
Figure 2 - Ventilation Air from Inside Building  
Ventilation Air From Outdoors  
Provide extra fresh air by using ventilation grills or ducts. You must provide two perma-  
nent 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:Donotprovideopeningsforinletoroutletairintoatticifattichasathermostat-  
controlled power vent. Heated air entering the attic will activate the power vent.  
Ventilated  
Outlet  
Attic  
Air  
Outlet  
Air  
To Attic  
To  
Crawl  
Space  
Inlet  
Air  
Ventilated  
Inlet Air  
Crawl Space  
Figure 3 - Ventilation Air from Outdoors  
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NOTICE  
INSTALLING  
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.  
Inspect chimney flue for damage. If damaged, operate heater with  
flue damper closed.  
WARNING  
Sealanyfreshairventsorashclean-outdoorslocatedonfloororwall  
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  
• in a recreational vehicle  
• wherecurtains,furniture,clothing,orotherflammableobjectsare  
less than 36 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 in the air  
(such as tobacco smoke) exist, may discolor walls.  
IMPORTANT: Vent-free heaters add moisture to the air. Although this is benefi-  
cial, installing heater in rooms without enough ventilation air may cause mildew to  
form from too much moisture. See Air for Combustion and Ventilation, pages 5  
through 7.  
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.  
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INSTALLATION AND CLEARANCES (Vent-Free Operation Only)  
INSTALLING  
Continued  
WARNING  
Maintain the minimum clearances. If you can, provide greater clear-  
ances 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  
Log  
Size  
18"  
24"  
30"  
Minimum Firebox Size  
Height  
17"  
17"  
17"  
Depth  
14"  
14"  
Front Width  
20"  
26"  
32"  
14"  
Carefully follow the instructions below. This will ensure safe installation into a  
masonry or U.L. listed manufactured fireplace.  
Minimum Wall and Ceiling Clearances (see Figure 4)  
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 4 - Minimum Clearance to Wall and Ceiling  
Continued  
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INSTALLING  
NOTICE  
You may use this heater as a vented product. If so, you must  
always run heater with chimney flue damper open. If running  
heater with damper open, non-combustible material above fire-  
place opening is not needed. Go to Installing Damper Clamp  
Accessory for Vented Operation, page 13.  
Continued  
Minimum Non Combustible Material Clearances  
If Not Using Mantel  
Note: If using a mantel, go to page 11. If not using a mantel, follow the informa-  
tion on this page.  
You must have non combustible material(s) above the fireplace opening. Non  
combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch  
thick. With sheet metal, you must have non combustible material behind it. Non  
combustible material must extend at least 8" up (for all models). If non combus-  
tible material is less than 12", you must install the fireplace hood accessory (24"  
and 30" models only). See chart below and Figure 5 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 13.  
Non-Combustible  
Material Distance (A)  
Requirements for  
Safe Installation  
12" or more  
Non combustible material okay.  
Between 8" and 12"  
24" or 30" Models: Install fireplace hood acessory  
(GA6050 or GA6052, see Accessories, page 33).  
18" Model: Non combustible material okay.  
Less than 8"  
Non combustible 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 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace  
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Minimum Non Combustible Material Clearances  
INSTALLING  
If Using Mantel  
Continued  
You must have non combustible material(s) above the fireplace opening. Non  
combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch  
thick. With sheet metal, you must have non combustible material behind it. Non  
combustible material must extend at least 8 inches up (for all models). If non  
combustible material is less than 12", you must install the fireplace hood acces-  
sory (24" and 30" models only). Even if non combustible material is more than  
12", you may need the hood accessory to deflect heat away from your mantel  
shelf. See chart below and Figures 6 and 7 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 Acces-  
sory for Vented Operation, page 13.  
Non-Combustible  
Material Distance (A)  
Requirements for  
Safe Installation  
12" or more  
Non combustible material okay.  
Between 8" and 12"  
24" or 30" Models: Install fireplace hood acessory  
(GA6050 or GA6052, see Accessories, page 33).  
18" Model: Non combustable material okay.  
Less than 8"  
Non combustible 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.  
Mantel Clearances  
If you meet minimum clearance between mantel shelf and top of fireplace open-  
ing, a hood is not required (see Figure 6).  
Mantel Shelf  
10"  
Underside of  
Mantel Shelf  
8"  
6"  
2 1/2"  
All minimum  
distances are  
in inches  
Minimum Non-  
Combustible  
(A)  
Log Set  
24"/30" Models  
Material  
12"  
8"  
20"  
14"  
241/2"  
163/4"  
271/2" 30"  
181/2" 20"  
18" Model  
Top of Fireplace  
Opening  
Minimum Non-  
Combustible  
Material Height  
Distances to  
Underside of  
Mantel  
Figure 6 - Minimum Mantel Clearances Without Using Hood  
If above minimum clearances are not met, you must have a hood. Follow  
minimum clearances shown in Figure 7 when using hood.  
11  
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Mantel Shelf  
INSTALLING  
12"  
10"  
8"  
Underside of  
Mantel Shelf  
Continued  
6"  
2 1/2"  
All minimum  
distances are  
in inches  
Minimum Non-  
Combustible  
Material  
Log Set  
8"  
Min.  
12"  
15"  
18"  
20"  
18", 24", 30"  
Models  
Top of Fireplace  
Opening  
Hood  
(GA6050, GA6052)  
Distances to  
Underside of  
Mantel  
Figure 7 - Minimum Mantel Clearances When Using Hood  
If your installation does not meet the above minimum clearances, you must:  
• operate the logs only with the flue damper open, OR  
• raise the mantel to an acceptable height, OR  
• 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).  
Combustible  
Material  
14"  
Min.  
Non-Combustible Material  
Figure 8 - Minimum Fireplace Clearances If Installed at Floor Level  
B. If combustible materials are less than 14" to the fireplace, you must install  
appliance at least 5" above the combustible flooring (see Figure 9).  
Hearth  
Combustible  
Material  
5"  
Min.  
Figure 9 - Minimum Fireplace Clearances Above Combustible Flooring  
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INSTALLING DAMPER CLAMP ACCESSORY FOR  
VENTED OPERATION  
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 non combustible  
material.  
INSTALLING  
Continued  
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 vent-free operation.  
3. You prefer vented operation.  
Ifreasonsnumber1or2aboveapplytoyou,youmustpermanentlyopenchimneyflue  
damper.Youmustinstallthedamperclampaccessory(toorder,seeAccessories,page  
33). 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"  
6"  
7"  
8"  
20 sq. inches  
29 sq. inches  
39 sq. inches  
51 sq. inches  
Chimney  
Height (ft.)  
Minimum Permanent  
Flue Opening (sq. ins.)  
6' to 15'  
15' to 30'  
39 sq. inches  
29 sq. inches  
Damper  
Clamp  
Damper  
Damper  
Clamp  
Damper  
Damper  
Masonry Fireplace  
Manufactured Fireplace  
Figure 10 - Attaching Damper Clamp  
13  
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INSTALLING HEATER BASE ASSEMBLY  
INSTALLING  
Continued  
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 soot-  
ing. Raise fireplace floor with non-combustible 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.  
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 (not provided) (if allowed by local codes)  
• sealant resistant to propane (propaneLP) 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 11, page 15).  
IMPORTANT:Hold gas regulator with wrench when connecting flexible gas hose.  
2. Locate masonary screws in hardware package.  
3. Position heater base assembly in fireplace.  
4. Mark screw locations through holes in mounting brackets (see Figure 12, page  
15). If installing in a brick-bottom fireplace, mark screw locations in mortar  
joint of bricks.  
5. Remove heater base from fireplace.  
6. Drill holes at marked locations using 3/16" drill bit.  
7. Attach base assembly to fireplace floor using two masonry screws (in hardware  
package) (see Figure 12, page 15).  
8. Connect to gas supply. See Connecting To Gas Supply, page 16.  
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INSTALLING  
Heater Gas  
Regulator  
Continued  
Fitting  
Flexible Gas Hose  
(if allowed by local codes)  
Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator  
Masonry Screw  
Mounting  
Bracket  
Figure 12 - Attaching Base Assembly to Fireplace Floor  
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CONNECTING TO GAS SUPPLY  
INSTALLING  
Continued  
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 *  
• sediment trap  
• tee joint  
• pipe wrench  
• test gauge connection *  
* AnA.G.A. design-certifiedmanualshutoffvalvewith1/8"NPTtapisanacceptable  
alternative to test gauge connection. Purchase the optional A.G.A. design-certified  
manual shutoff valve from your dealer. See Accessories, page 33.  
WARNING  
Never connect heater to private (non-utility) gas wells. This gas is  
commonly known as well-head 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" diameter or greater to allow proper gas volume to  
heater. If pipe is too small, undue loss of pressure will occur.  
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 up-  
stream from heater (see Figure 13, page 17).  
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 13, page 17. Locate sedi-  
ment 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 contami-  
nants. This keeps them from going into heater controls. If sediment trap is not  
installed or is installed wrong, heater may not run properly.  
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INSTALLING  
CAUTION  
Continued  
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  
Approved Flexible  
Gas Hose (if allowed  
by local codes)  
Gas Meter  
(5" W.C.** to  
10.5" W.C.  
Pressure)  
Gas  
Regulator  
Tee Joint  
Pipe  
Nipple  
3" Minimum  
Cap  
Sediment  
Trap  
Figure 13 - Gas Connection  
* Purchase the optional A.G.A. design-certified manual shutoff valve from your  
dealer. See Accessories, page 33.  
** Minimum inlet pressure for purpose of input adjustment.  
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.  
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.  
Continued  
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3. Pressurize supply piping system by either using compressed air or opening  
main gas valve located on or near gas meter.  
INSTALLING  
4. Check all joints of gas supply piping system. Apply mixture of liquid soap and  
water to gas joints. Bubbles forming show a leak.  
Continued  
5. Correct all leaks at once.  
6. Re-connect heater and manual shutoff valve to gas supply. Check re-connected  
fittings for leaks.  
Test Pressures Equal To or Less Than 1/2 PSIG  
1. Close manual shutoff valve (see Figure 14).  
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 15). Apply  
mixture of liquid soap and water to gas joints. Bubbles forming show a leak.  
4. Correct all leaks at once.  
Pressure Testing Heater Gas Connections  
1. Open manual shutoff valve (see Figure 14).  
2. Open main gas valve located on or near gas meter.  
3. Make sure control knob of heater is in the OFF position.  
4. Check all joints from manual shutoff valve to control valve (see Figure 15).  
Apply mixture of liquid soap and water to gas joints. Bubbles forming show a  
leak.  
5. Correct all leaks at once.  
6. Light heater (see Operating Heater, pages 20 through 22 [manually-controlled  
models] or pages 22 through 24 [thermostatically-controlled model]). Check all  
other internal joints for leaks.  
7. Turn off heater (see To Turn Off Gas to Appliance, page 21[manually-con-  
trolled models]) or page 24 [thermostatically-controlled model].  
Open  
Manual  
Shutoff  
Valve  
Closed  
Figure 14 - Manual Shutoff Valve  
Manual  
Thermostat Gas Valve or  
Shutoff  
Control Valve Location  
Valve  
Gas Meter  
Figure 15 - Checking Gas Joints  
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INSTALLING LOGS  
INSTALLING  
Continued  
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. Locate pegs on the bottom of back log (#1). Slide these pegs into the holes in  
the grate base behind the burner (see Figure 16).  
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 17). 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 18).  
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 cross-  
over log lines up with rectangular knobs on top of the middle and front logs  
(see Figure 19).  
Back Log (#1)  
Middle Log (#2)  
Peg  
Hole in  
Grate Base  
Tab  
Burner  
Cutout  
“U” Bend  
U-Shaped  
Slot  
Figure 16 - Installing Back Log (#1)  
Figure 17 - Installing Middle Log (#2)  
Front Log (#3)  
Crossover  
Log (#1)  
Notches  
3
Recess  
Post  
Rectangular  
Knobs  
Post  
Figure 18 - Installing Front Log (#3)  
Figure 19 - Installing Crossover Log (#4)  
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OPERATING  
FOR YOUR SAFETY READ BEFORE LIGHTING  
HEATER  
Manually-  
Controlled Models  
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.  
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  
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.  
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: Homeowners 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 above.  
2. Make sure manual shutoff valve is fully open.  
Clockwise  
3. Press in and turn control knob clockwise  
to the OFF position.  
Control Knob  
Ignitor Button  
HI  
PILOT  
OFF  
LO  
Figure 20 - Control Knob and Ignitor Button Location  
4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the  
floor. If you smell gas, STOP! Follow “B” in the safety information above. If you  
don’t smell gas, go to the next step.  
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C-clockwise  
5. Slightly depress and turn control knob counterclockwise  
position. Press in control knob for five (5) seconds (see Page 20).  
to the PILOT  
OPERATING  
HEATER  
Manually-  
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.  
Controlled Models  
Continued  
6. 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 22.  
7. 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.  
Ignitor Electrode  
Pilot Burner  
Thermocouple  
Figure 21 - Pilot  
• If control knob does not pop out when released, contact a qualified service  
person or gas supplier for repairs.  
8. Slightly depress and turn control knob counterclockwise  
to desired  
C-clockwise  
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.  
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 TOAPPLIANCE  
Shutting Off Heater  
1. Press in and turn control knob clockwise  
to the HIGH position.  
Clockwise  
2. Turn control knob clockwise to the pilot position.  
Clockwise  
3. Press in control knob and turn clockwise  
to the OFF position.  
Clockwise  
Shutting Off Burners Only (pilot stays lit)  
1. Turn control knob clockwise  
to the HIGH position.  
to the pilot position.  
Clockwise  
2. Press in and turn control knob clockwise  
Clockwise  
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OPERATING  
MANUAL LIGHTING PROCEDURE  
1. Follow steps 1 through 5 under Lighting Instructions, pages 20 and 21.  
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 step 8 on page 21.  
HEATER  
Manually-  
Controlled Models  
Continued  
OPERATING  
FOR YOUR SAFETY READ BEFORE LIGHTING  
HEATER  
Thermostatically-  
Controlled Model  
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.  
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  
fireplacewillcauseglasstoburst. Alsoiffireplaceopeninghasventsatthe  
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, 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: Homeowners 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.  
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1. STOP! Read the safety information above.  
2. Make sure manual shutoff valve is fully open.  
OPERATING  
HEATER  
Thermostatically-  
Controlled Model  
Continued  
Clockwise  
3. Turn control knob clockwise  
to the OFF position.  
Control Knob  
Ignitor Button  
Figure 22 - Control Knob and Ignitor Button Location  
4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the  
floor. If you smell gas, STOP! Follow “B” in the safety information above. If you  
don’t smell gas, go to the next step.  
C-clockwise  
5. Turn control knob counterclockwise  
to the PILOT position. Press in  
control knob for five (5) seconds (see above).  
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.  
6. 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 on page 24.  
7. 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.  
Ignitor Electrode  
Pilot Burner  
Thermocouple  
Figure 23 - Pilot  
8. 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.  
Continued  
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TO TURN OFF GAS TO APPLIANCE  
OPERATING  
Shutting Off Heater  
1. Turn control knob clockwise  
Shutting Off Burners Only (pilot stays lit)  
1. Turn control knob clockwise to the PILOT position.  
HEATER  
Thermostatically-  
Controlled Model  
Continued  
to the OFF position.  
Clockwise  
Clockwise  
THERMOSTAT CONTROL OPERATION  
(Thermostat-Controlled Models Only)  
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.  
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  
1. Follow steps 1 through 5 under Lighting Instructions, page 23.  
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 step 8, page 23.  
Check pilot flame pattern and burner flame patterns often.  
INSPECTING  
BURNERS  
PILOT FLAME PATTERN  
Figure 24 shows a correct pilot flame pattern. Figure 25 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.  
Thermocouple  
Thermocouple  
Pilot Burner  
Pilot Burner  
Figure 24 - Correct Pilot  
Flame Pattern  
Figure 25 - Incorrect Pilot  
Flame Pattern  
If pilot flame pattern is incorrect, as shown in Figure 25  
• turn heater off (see To Turn Off Gas to Appliance, page 21 [manually-con-  
trolled models] or above [thermostat-controlled model])  
• see Troubleshooting, pages 25 through 28  
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CLEANING  
AND  
WARNING  
Turn off heater and let cool before cleaning.  
MAINTENANCE  
CAUTION  
You must keep control areas, burner, and circulating air passage-  
ways 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.  
ODS/PILOT AND BURNER  
• Use a vacuum cleaner or small, soft bristled brush to clean.  
LOGS  
• If you remove logs for cleaning, refer to Installing Logs, page 19, to properly  
replace logs.  
• Replace log(s) if broken or chipped (dime-sized or larger).  
TROUBLE-  
SHOOTING  
WARNING  
Turn off and unplug heater and let cool before servicing. Only a  
qualified service person should service and repair heater.  
Note: All troubleshoot-  
ing 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 con- 1. Reconnect ignitor cable  
nected to ignitor cable  
2. Ignitor cable pinched or  
wet  
2. Free ignitor cable if  
pinched by any metal  
or tubing. Keep ignitor  
cable dry  
3. Piezo ignitor nut is loose 3. Tighten nut holding  
piezo ignitor to base  
panel of log set. Nut is  
located behind base  
panel.  
4. Broken ignitor cable  
5. Bad piezo ignitor  
6. Ignitor electrode broken  
7. Ignitor electrode posi-  
tioned wrong  
4. Replace ignitor cable  
5. Replace piezo ignitor  
6. Replace piezo ignitor  
7. Replace piezo ignitor  
Continued  
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OBSERVED  
PROBLEM  
POSSIBLE  
CAUSE  
TROUBLE-  
REMEDY  
SHOOTING  
When ignitor button  
is pressed, there is  
spark at ODS/pilot  
but no ignition  
1. Gas supply turned off or 1. Turn on gas supply or  
Continued  
manual shutoff valve  
closed  
open manual shutoff  
valve  
2. Control knob not in  
PILOT position  
2. Turn control knob to  
PILOT position  
3. Control knob not  
pressed in while in  
PILOT position  
3. Press in control knob  
while in PILOT position  
4. Air in gas lines when  
installed  
4. Continue holding down  
control knob. Repeat  
igniting operation until  
air is removed  
5. ODS/pilot is clogged  
5. Clean ODS/pilot (see  
Cleaning and Mainte-  
nance, page 25) or  
replace ODS/pilot  
assembly  
6. Gas regulator setting is  
not correct  
6. Replace gas regulator  
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  
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  
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  
4. A) Contact local natural  
gas company  
B) Clean ODS/pilot  
(see Cleaning and  
Maintenance, page 25)  
or replace ODS/pilot  
assembly  
5. Thermocouple connec-  
tion loose at control  
valve  
5. Hand tighten until snug,  
then tighten 1/4 turn  
more  
6. Thermocouple damaged  
7. Control valve damaged  
6. Replace thermocouple  
7. Replace control valve  
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OBSERVED  
PROBLEM  
POSSIBLE  
CAUSE  
TROUBLE-  
REMEDY  
SHOOTING  
Burner does light  
after ODS/pilot is lit  
1. Burner orifice clogged  
1. Clean burner (see  
Cleaning and Mainte-  
nance, page 25) or  
replace burner orifice  
2. Contact local natural gas  
company  
Continued  
2. Inlet gas pressure is  
too low  
3. Burner orifice diameter 3. Replace burner orifice  
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 Mainte-  
nance, page 25) or  
replace burner orifice  
Burner backfiring  
during combustion  
1. Burner orifice is  
clogged or damaged  
1. Clean burner (see  
Cleaning and Mainte-  
nance, page 25) 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  
1. Check burner for dirt  
and debris. If found,  
clean burner (see  
Cleaning and Mainte-  
nance, page 25)  
2. Gas regulator defective  
3. Residues from manu-  
facturing processes  
2. Replace gas regulator  
3. Problem will stop after a  
few hours of operation  
and logs curing  
Moisture/condensa-  
tion noticed on  
windows  
1. Not enough combus-  
tion/ventilation air  
1. Refer to Air for Com-  
bustion and Ventilation  
requirements (page 5)  
Heater produces a  
whistling noise  
when burner is lit  
1. Turning control knob  
to HI position when  
burner is cold  
1. Turn control knob to LO  
position and let warm up  
for a minute  
2. Air in gas line  
2. Operate burner until air  
is removed from line.  
Have gas line checked  
by local natural gas  
company  
3. Air passageways on  
heater blocked  
3. Observe minimum  
installation clearances  
(see pages 9-12)  
4. Dirty or partially  
4. Clean burner (see  
Cleaning and Maintenance,  
page 25) or replace  
burner orifice  
clogged burner orifice  
Continued  
27  
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TROUBLE-  
WARNING  
If you smell gas  
• Shut off gas supply.  
SHOOTING  
Continued  
• 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.  
POSSIBLE  
CAUSE  
OBSERVED  
PROBLEM  
REMEDY  
1. Metal expanding while  
heating or contracting  
while cooling  
Heater produces a  
clicking/ticking noise  
just after burner is lit  
or shut off  
1. This is common with  
most heaters. If noise is  
excessive, contact  
qualified service person  
1. Heater burning vapors  
from paint, hair spray,  
glues, cleaners, chemi-  
cals, new carpet, etc.  
(See IMPORTANT  
Heater produces  
unwanted odors  
1. Open window and  
ventilate room. Stop using  
odor causing products  
while heater is running  
statement above)  
2. Gas leak. See Warning  
statement at top of  
page  
2. Locate and correct all  
leaks (see Checking Gas  
Connections, page 17)  
1. Not enough fresh air is  
available  
Heater shuts off in use  
(ODS operates)  
1. Open window and/or door  
for ventilation  
2. Low line pressure  
2. Contact local natural gas  
company  
3. ODS/pilot is partially  
clogged  
3. Clean ODS/pilot (see  
Cleaning and Mainte-  
nance, page 25)  
1. Gas leak. See Warning  
statement at top of  
page  
Gas odor even when  
control knob is in OFF  
position  
1. Locate and correct all  
leaks (see Checking Gas  
Connections, page 17)  
2. Replace control valve  
2. Control valve defective  
1. Foreign matter between  
control valve and burner  
2. Gas leak. See Warning  
statement at top of  
page  
Gas odor during  
combustion  
1. Take apart gas tubing and  
remove foreign matter  
2. Locate and correct all  
leaks (see Checking Gas  
Connections, page 17)  
1. Thermostat sensing bulb  
needs to be repositioned.  
Logs set cycles to  
pilot, but room  
temperature drops to a  
lower than ideal level  
before log set comes  
back on  
1. Reposition thermostat  
sensing bulb (see instruc-  
tions for Optional  
Positioning of Thermostat  
Sensing Bulb, page 29.  
28  
102990  
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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.  
OPTIONAL  
POSITIONING  
OF  
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 has been provided.  
THERMOSTAT  
SENSING BULB  
Tools needed: 1/4" hex driver or socket  
1. Remove logs. Locate the gas valve assembly and thermostat sensing blub (see Figure  
26).  
For Masonry and  
Factory-built  
Gas Valve  
Assembly  
Metal Fireplace  
Thermostat  
Sensing Bulb  
Mounting  
Bracket  
Figure 26 - Location of Gas Valve Assembly and Thermostat Sensing Bulb  
2. The adhesive-backed mounting clip (see Figure 27) is attached to the thermostat  
sensing bulb. Remove the adhesive-backed mounting clip.  
Figure 27 - Adhesive-backed Mounting Clip  
3. With 1/4" hex driver or socket, loosen the thermostat screw. Carefully slide the  
thermostat sensing bulb out of the retaining clamp (see Figure 28).  
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.  
Capillary  
Thermostat Screw  
Retaining Clamp  
Thermostat  
Sensing Bulb  
Figure 28 - Removing Thermostat Sensing Bulb  
4. 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 29 on page 30 for location.  
29  
102990  
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Thermostat  
Sensing Bulb  
OPTIONAL  
POSITIONING  
OF  
Adhesive-backed  
Mounting Clip  
THERMOSTAT  
SENSING BULB  
Figure 29 - Locating Thermostat Sensing Bulb on Masonry Fireplace  
For Masonry and  
Factory-built  
Metal Fireplace  
Continued  
If you have a factory-built metal fireplace, see Figure 30 for location.  
Thermostat  
Sensing Bulb  
Adhesive-backed  
Mounting Clip  
Figure 30 - Locating Thermostat Sensing Bulb on Factory-built Metal Fireplace  
If your fireplace has glass doors, position sensing bulb directly behind door gap on right  
bottom side (see Figure 31).  
Thermostat  
Sensing Bulb  
Adhesive-backed  
Mounting Clip  
Glass  
Doors  
Figure 31 - Installing Thermostat Sensing Bulb behind Glass Doors  
5. 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 32). Slide the thermostat sensing bulb into the clip.  
IMPORTANT: Do not crimp capillary.  
Thermostat  
Sensing Bulb  
Adhesive-backed  
Mounting Clip  
Capillary  
Do Not Crimp Capillary  
Figure 32 - Positioning the Thermostat Sensing Bulb in the Vertical  
Position with the Capillary at the Bottom  
30  
102990  
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You may have further questions about installation, operation, or troubleshooting.  
If so, contact DESA International’s Technical Service Department at  
1-800-DESA LOG (1-800-337-2564).  
TECHNICAL  
SERVICE  
18" Model  
24" Models  
30" Model  
SPECIFICATIONS  
Btu (Variable)  
Type Gas  
16,000/30,000  
20,000/39,000  
20,000/39,0000  
Natural Gas Only Natural Gas Only Natural Gas Only  
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  
10.5"  
5"  
10.5"  
10.5"  
Minimum*  
Shipping Weight  
28 lbs.  
30 lbs.  
32 lbs.  
* For the purpose of input adjustment  
When gas pressure is too low  
• pilot will not stay lit  
SERVICE  
HINTS  
• 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.  
31  
102990  
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Note: Use only original replacement parts. This will protect your warranty cover-  
age for parts replaced under warranty.  
REPLACEMENT  
PARTS  
Parts Under Warranty  
Contact authorized dealers of this product. If they can’t supply original replace-  
ment part(s), call DESA International’s Technical Service Department at  
1-800-DESA LOG (1-800-337-2564).  
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 replace-  
ment part(s), 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  
These Parts Centrals are privately owned businesses. They have agreed to support  
our customer’s needs by providing original replacement parts and accessories.  
PARTS  
CENTRAL  
Baltimore Electric  
1348 Dixwell Avenue  
Hamden, CT 06514  
1-800-397-7553  
Washer Equipment Co.  
1715 Main Street  
Kansas City, MO 64108  
KS, MO, AR  
Dayton Hardware  
P.O. Box 275  
North Dayton Station  
Dayton, OH 45404  
All States  
203-248-7553  
816-842-3911  
Parts Department  
513-258-3721  
East Coast Energy  
Products  
833 Broadway  
W. Long Branch, NJ  
07764  
OH 1-800-762-3426  
Portable Heater Parts  
342 N. County Rd. 400 East  
Valparaiso, IN 46383  
All States  
219-462-7441  
1-800-362-6951  
Halco Enterprises  
208 Carter Drive, Unit 21  
West Chester, PA 19382  
215-696-2670  
908-870-8809  
1-800-755-8809  
1-800-368-0803  
FBD  
Tarantin Tank Co.  
P.O. Box 6129  
Freehold, NJ 07728  
908-780-9340  
LA Porte’s Parts &  
Service  
2444 N. 5th Street  
Hartsville, SC 29550  
803-332-0191  
P O Box 1096  
Franklin, KY 42134  
502-586-1922  
1-800-654-8534  
1-800-922-0724  
Parts Department  
Four Flags Power Products  
1115 Stateline Road  
Niles, MI 49120  
616-684-2697  
Parts Only  
Albany Ladder  
1586-90 Central Avenue  
Albany, NY 12205  
NY, MA, VT  
Cans Unlimited, Inc.  
P.O. Box 645  
Taylor, SC 29687  
All States  
518-869-5335  
1-800-354-7368  
803-879-3009  
1-800-845-5301  
Master Service Center  
1184 Wilson NW  
Walker, MI 49504  
616-791-4760  
1-800-446-1446  
32  
102990  
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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.  
ACCESSORIES  
MANUAL SHUTOFF  
VALVE - GA5010  
For all models. Manual shutoff valve  
with 1/8" NPT tap. Fits 1/2" NPT  
pipe.  
BLACK FIREPLACE  
HOOD - GA6050  
For all models. Helps  
deflect heat away from  
mantel or wall above  
fireplace.  
BRASS FIREPLACE  
HOOD - GA6052  
For all models. Helps  
deflect heat away from  
mantel or wall above  
fireplace.  
DAMPER CLAMP - GA6080  
For variably controlled models.  
Permanently opens chimney flue  
damper for vented operation.  
LAVA ROCK - GA6060  
For all models. Order when additional  
rock is desired. (3 lb. bag)  
33  
102990  
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ILLUSTRATED  
PARTS  
BREAKDOWN  
Variable Manually-  
Controlled Models  
1
4
3
2
CGD3018N  
CGD3924N  
CGD3930N  
20-2  
24  
20-1  
20  
18  
12  
19  
25  
11  
10  
13  
7
8
6
22  
9
21  
5
14  
18  
23  
22  
19  
17  
15  
16  
22  
34  
102990  
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This list contains replaceable parts used in your heater. When ordering parts,  
follow the instructions listed under Replacement Parts on page 28 of this manual.  
PARTS LIST  
KEY  
NO.  
CGD3018N  
PART NUMBER  
CGD3924N  
PART NUMBER  
CGD3930N  
PART NUMBER  
DESCRIPTION  
QTY.  
1
2
3
4
5
6
7
8
103008-02  
103009-02  
103010-02  
103011-02  
102774-04BR  
102844-02  
102966-02  
098867-11  
102798-01  
102779-03  
099056-18  
102843-01  
102980-01  
102568-07  
098508-01  
098354-01  
102445-01  
099387-08  
098271-07  
103042-01  
103008-01  
103009-01  
103010-01  
103011-01  
102774-01BR  
102844-01  
102966-01  
098867-11  
102798-01  
102779-01  
099056-16  
102843-01  
102772-01  
102568-05  
098508-01  
098354-01  
102445-01  
099387-08  
098271-07  
103042-01  
099594-01  
098593-01  
M11084-38  
098304-03  
098276-01  
098249-01  
099553-01  
103008-03  
103009-03  
103010-03  
103011-03  
102774-03BR  
102844-01  
102966-01  
098867-11  
102798-01  
102779-01  
099056-16  
102843-01  
102772-01  
102568-05  
098508-01  
098354-01  
102445-01  
099387-08  
098271-07  
103042-01  
099594-01  
098593-01  
M11084-38  
098304-03  
098276-01  
098249-01  
099553-01  
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  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
9
1
2
1
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
Valve Retainer Nut  
Control Knob  
Piezo Ignitor  
Pilot Tube  
Ignitor Cable  
ODS Pilot  
20-1 099594-01  
20-2 098593-01  
21  
22  
23  
24  
25  
Ignitor Electrode  
Thermocouple  
Regulator Screw  
Black Screw, PPH #8-18  
Hex Head Plug, 1/8 NPT  
Nut, M5  
M11084-38  
098304-03  
098276-01  
098249-01  
099553-01  
Pilot Shield  
PARTS AVAILABLE — NOT SHOWN  
100563-01  
101055-02  
100565-01  
100639-01  
101449-04  
101137-02  
101416-18  
GA6060  
100563-01  
100563-01  
101055-02  
100565-01  
100639-01  
101449-04  
101137-02  
101416-18  
GA6060  
Warning Plate  
1
1
1
1
1
1
1
1
101055-02  
100565-01  
100639-01  
101449-04  
101137-02  
101416-18  
GA6060  
Lighting Instructions Plate  
Warning Plate Fastener  
Caution Decal  
Control Position Decal  
Hardware Kit  
Information Video  
Lava Rock  
35  
102990  
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ILLUSTRATED  
PARTS  
BREAKDOWN  
Thermostatically-  
Controlled Manuals  
1
4
3
2
CGD3924NT  
20-2  
20-1  
20  
18  
12  
24  
19  
23  
11  
10  
13  
7
25  
9
14  
8
6
21  
15  
22  
22  
16  
5
22  
19  
17  
22  
36  
102990  
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This list contains replaceable parts used in your heater. When ordering parts, follow  
the instructions listed under Replacement Parts on page 33 of this manual.  
PARTS LIST  
KEY  
NO.  
CGD3924NT  
PART NUMBER  
DESCRIPTION  
QTY.  
1
2
3
4
5
6
7
8
103008-01  
103009-01  
103010-01  
103011-01  
102774-05BR  
102844-01  
102966-01  
098867-11  
102981-01  
102983-01  
099056-16  
102843-01  
102772-01  
101329-20  
102979-01  
098544-01  
102445-01  
099387-09  
098271-07  
103042-01  
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  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
13  
1
2
2
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
Burner  
Thermostat Gas Valve Assembly  
Thermostat Bracket  
Thermobulb Clip  
Piezo Ignitor  
Pilot Tube  
Ignitor Cable  
ODS Pilot  
Ignitor Electrode  
Thermocouple  
Regulator Screw  
Black Screw, PPH #8-18  
Pilot Shield  
20-1 099594-01  
20-2 098593-01  
21  
22  
23  
24  
25  
M11084-38  
098304-03  
099553-01  
098249-01  
099211-01  
Nut, M5  
Hex Screw, 10-16 x 2.50  
PARTS AVAILABLE — NOT SHOWN  
100563-01  
101054-01  
100565-01  
100639-01  
101137-02  
101416-18  
GA6060  
Warning Plate  
1
1
1
1
1
1
1
Lighting Instructions Plate  
Warning Plate Fastener  
Caution Decal  
Hardware Kit  
Information Video  
Lava Rock  
37  
102990  
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________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
NOTES  
38  
102990  
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________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
________________________________________________________________  
NOTES  
39  
102990  
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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 one (1) year 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  
provideoriginalfactoryreplacementparts. Failuretouseoriginalfactoryreplacementpartsvoidsthiswarranty. Theheater  
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.  
TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHE  
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 ONE (1) YEAR ON ALL COMPO-  
NENTS 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 CONSE-  
QUENTIAL DAMAGES.  
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or  
consequentialdamages,sotheabovelimitationonimpliedwarranties,orexclusionorlimitationondamagesmaynotapply  
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:  
2701 Industrial Drive  
P.O. Box 90004  
Bowling Green, KY 42102-9004  
102990-01  
Rev. A  
06/96  
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