Comfort Glow CGD3018N, CGD3924N, CGD3930N, CGD3924NT Owner's Operation And Installation Manual

YELLOW FLAME DESIGN

UNVENTED (VENT-FREE)

NATURAL GAS LOG HEATER

Manually-Controlled Models Also Designed Certified as Vented Decorative Appliance)

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

CGD3018N
CGD3924N

CGD3930N

24"

Thermostatically-

Controlled Model

CGD3924NT

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.

• If you cannot reach your gas sup-

plier, call the fire department.

m Installation and service must be per-

formed by a qualified installer, service
agency, or the gas supplier.

WARNING: Improper installation, adjust-

ment, alteration, service, or maintenance

can cause injury or property damage.

Refer to this manual for correct installa-

tion and operational procedures. For

assistance or additional information
consult a qualified installer, service

agency, or the gas supplier.

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-

sions for adequate combustion and ven-
tilation air must be provided. Refer to

Air for Combustion and Ventilation sec-
tion in this manual.

CONTENTS

SAFETY

INFORMATION

SECTION PAGE

Safety Information ................................................................................... 2

Product Identification .............................................................................. 4

Local Codes ............................................................................................. 4

Unpacking ................................................................................................ 4

Product Features ...................................................................................... 4

Air for Combustion and Ventilation ........................................................ 5

Installing .................................................................................................. 8

Check Gas Type ............................................................................... 8

Installation and Clearances (Vent-Free Operation Only) ................. 9

Installing Damper Clamp Accessory for Vented Operation ............ 13

Installing Heater Base Assembly ..................................................... 14

Connecting to Gas Supply ................................................................ 16

Checking Gas Connections .............................................................. 17

Installing Logs .................................................................................. 19

Operating Heater (Manually-Controlled Models) ................................... 20

Operating Heater (Thermostatically-Controlled Model) ......................... 22

Inspecting Burners ................................................................................... 24

Cleaning and Maintenance ...................................................................... 25

Troubleshooting ....................................................................................... 25

Optional Positioning of Thermostat Sensing Bulb .................................. 29

Technical Service .................................................................................... 31

Specifications .......................................................................................... 31

Service Hints ........................................................................................... 31

Replacement Parts ................................................................................... 32

Parts Central ............................................................................................ 32

Accessories .............................................................................................. 33

Illustrated Parts Lists ............................................................................... 34

Warranty Information .............................................................................. Back Cover

AWARNINGS

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, end carbon monoxide poisoning.

A DANGER

Carbon monoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble

the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not
be working properly. Get fresh air at once! Have heater serviced. Some people are more
affected by carbon monoxide than others. These include pregnant women, people with
heart or lung disease or anemia, those under the influence of alcohol, and those at high

altitudes.

Natural Gas: Natural gas is odorless. An odor-making agent is added to the gas. The odor
helps you detect agas 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.

Safety Information continues on next page

1o2_o

SAFETY

INFORMATION

Continued

70299O

WARNINGS Continued

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

• 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 flora 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 asolid fuel burning fireplace, thechimney flue and firebox must be
cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner. Creosote

will ignite ifhighly heated. Inspect chimney flue for damage. If damaged, operate heater
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. You must operate this heater with a fireplace screen inplace. Make sure fireplace screen
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 drafis that a!ter burner
flame patterns. Ceiling fans can create drafts that alter burner flame patterns. Alteled
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.

l 1. 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 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. Do not operate heater if any log is broken. Do not operate heater ifa log is chipped (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, m_

PRODUCT

IDENTIFICATION

LOCAL CODES

UNPACKING

PRODUCT

FEATURES

Crossover Log

Back Log

Front Log

J- Burner

Piez_
Ignitor

_ 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*.
*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.

Operation

This heater is clean burning. It requires no outside venting. There is no heat loss out
a vent or up a chimney. Heat is generated by 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.

m

t02990

AIR FOR

COMBUSTION

AND

VENTILATION

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.

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/ANSl 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.

iou 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 B

10_990

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

DETERMINING 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.

I. 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
Gas furnace Btu/Hr

Vented gas heater Btu/Hr
Gas fireplace logs Btu/Hr

Other gas appliances* + Btu/Hr
Total = Btu/Hr

Example: Gas water heater 40,000 Btu/Hr

Vent-free heater + 39,000 Btu/Hr
Total = 79,000 Btu/Hr

* Do nut 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

79,000

Btu/Hr (maximum the space can support)
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 hlside 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.

AIR FOR

COMBUSTION

AND

VENTILATION

Contmued

t_go

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 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 opemngs: one ",,Jthin 12"
of the ceiling and one within 12" of the floor on the wall connecting the tv,o 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. I, Sectiml 5.3, Air

for Combustion and Ventilation for required size of ventitation 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.

Ventilati_

Grills

Into Adjoining Or

Room, Remove [i

Option 1 Door into I_

Adjoining Ii

Room,
OptionOI

/

Ventilation Grills

Into Adjoining Room,

Option 2

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: 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 [he power vent.

Outlet
Air

Inlet

Air

FJ

To Attic

c z TO

Crawl
Space

Inlet Air m Ventilated

Crawl Space

,ure 3 - Ventilation Air from Outdoors I I

INSTALLING

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.

Inspect chimney flue for damage. If damaged, operate heater with
flue damper closed.

WARNING

Seal any fresh air vents orash clean-outdoors located on floor or wall
of fireplace. If not, drafting may cause pilot outage or sooting. Use a
heat-resistant sealant. Do not seal chimney flue damper.

WARNING

Never install the heater

• in a bedroom or bathroom

• 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

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.

m

_02990

INSTALLING

Continued

INSTALLATION AND CLEARANCES (Vent-Free Operation Only)

WARNING

Maintain the minimum clearances. If you can, provide greater clear-
ances from f oor, ceiling, and adjoining wall.

MINIMUM FIREPLACE CLEARANCE

TO COMBUSTIBLE MATERIALS

Side Wall Ceiling

16" 42"

LOG SIZING REQUIREMENTS

Log Minimum Firebox Size
Size Height Depth Front Width

18" 17" 14" 20"

24" 17" 14" 26"
30" 17" 14" 32"

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"

I'r 1"1

1 6"

Left and Right

Sides

I

Figure 4 - Minimum Clearance to Wall and Ceiling

Continued ! I

10_990

INSTALLING

Continued

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.

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.

/MPOBTANT: If you cannot meet these minimum clearances, you must operate
heater with chimney flue damper open. Go to lnstalli_Tg Damper Clamp Acce.ssot 3'

for Vented Operation, page 13.

Non-Combustible
Material Distance (A)

12" or more

Between 8" and 12"

Less than 8"

Requirements for
Safe Installation

Non combustible material okay.
24" or 30" Models: Install fireplace hood acessory

(GA6050 or GA6052, see Accessories, page 33).

18" Model: Non combustible material okay.

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 _I

Material

I

Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

,I

IOL_J

102990

INSTALLING

Contmued

Minimum Non Combustible Material Clearances
If Using Mantel

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 no. 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 h_stalling Damper Clamp Acces-
sory for Vented Operation, page 13.

Non-Combustible
Material Distance (A)

12" or more
Between 8" and 12"

Less than 8"

Requirements for
Safe Installation

Non combustible material okay.

24" or 30" Models: Install fireplace hood acessory
(GA6050 or GA6052, see Accessories, page 33).
18" Model: Non combustable material okay.

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).

Minimum Non-
Combustible
Material

10" j Mantel Shelf

m

1

(A)

12" 20"

8" 14"

!

Minimum Non-

Combustible

Material Height

I

241/2" 271/2"

16314 ' 181/2 '

,m

Distances to
Underside of

Mantel

Underside of
Mantel Shelf

All minimum
distances are

in inches

Log Set

30" _ 24"/30" Models

20" _ 18" Model

Top of Fireplace

Opening

Figure 6 -Minimum Mantel Clearances WithoutUsing Hood

If above minimum clearances are not met, you must have a hood. Follow
minimum clearances shown in Figure 7 when using hood. Continued Elm

INSTALLING

Continued

Minimum Non*
Combustible

Material

Mantel Shelf

12"

8" 12" 15" 18"

Min.

J ,

k

Hood Distances to

(GA6050, GA6052) Underside of

Mantel

Underside of
Mante_Shelf

All minimum
distances are

in inches

Log Set

-_0"-e-.-18", 24", 30"
Models

Top of Fireplace

) Opening

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

14" Material

\\\\_.\\\\1

_'XNon-Combustible Material

Figure 8. Minimum Fireplace Clearances ff Installed at Floor Level

B. Ifcombustible materials are less than 14" to the fireplace, you must install

appliance at least 5" above the combustible flooring (see Figure 9).

I

Hearth

Combustible
Material

Min.

ii Figure 9 - Minimum Fireplace Clearances Above Combustible Flooring

102990

I_390

INSTALLING

Continued

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.

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.
If reasons number I or 2 above apply to you, you must permanently open chimney flue

damper. You must install the damper clampaccessory (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" 20 sq. inches
6" 29 sq. inches

7" 39 sq. inches
8" 51 sq. inches

Chimney Minimum Permanent

Height (ft.) Flue Opening (sq. ins.)

6' to 15' 39 sq. inches

15' to 30' 29 sq. inches

Damper

Damper

Masonry Fireplace Manufactured Fireplace

Figure 10 - Attaching Damper Clamp Continued []

INSTALLING

Continued

INSTALLING HEATER BASE ASSEMBLY

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.

INSTALLING

Contmued

Heater Gas

j/Regulator

Flexible Gas Hose

(if allowed by local codes)

Fitting

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator

Masonry Screw

L

i

Mounting
Bracket

Figure 12 - Attaching Base Assembly to Fireplace Floor

I

102990

INSTALLING

ContMued

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) • sediment trap

• sealant (resistant to propane/LP gas) ° tee joint

• manual shutoff valve * • pipe wrench

• test gauge connection *

* An A.G.A. design-certified manual shutoffvalve with 1/8" NPTtap 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 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.

I_o990

INSTALLING

Continued

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

From With 1/8" NPT Tap*

Gas Meter

(5" W.C.** to

10.5" W.C.
Pressure)

r Tee Joint J

LCa p /

Sediment

Trap Figure 13 - Gas Connection

Approved Flexible

Gas Hose (if allowed
by local codes)

Gas

/

/ Regulator

* 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

I. 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 =

INSTALLING

Continued

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. 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].

Shutoff \
Valve "_ ed

Figure 14 - Manual Shutoff Valve

Manual

Shutoff

r.'HA Valve

GasMeter _ /_ _

Thermostat Gas Valve or
Control Valve Location

/

Figure 15 - Checking Gas Joints

INSTALLING

Contmued

INSTALLING LOGS

WARNING t

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 frout
of the back log. The cutout on the fight 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 Bas

Figure 16- Installing Back Log (#1)

Front Log (#3)

U-Shaped

Slot

Figure 17- Installing Middle Log (#2)

Log (#1)

Post

Figure 18 - Installing Front Log (#3)

Rectangular

Knobs

Figure 19 - Installing Crossover Log (#4)

t02990

OPERATING

HEATER

Manually-

Controlled Models

=!

1 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.

WltAT 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.

l. STOP! Read the safety information above.

2. Make sure manual shutoff valve is fully open.

3. Press in and turn control knob clockwise _ to the OFF position.

Figure20. ControlKnob and Ignitor ButtonLocation

4. Wait five (5) minutestoclear out anygas.Then smellfor gas, including near the
floor. If you smellgas,STOP! Follow "B" in thesafetyinformation above. If you

don't smellgas,go tothenext step.

_02990

OPERATING

HEATER

Manually-

Controlled Models

Continued

5. Slightly depress and turn control knob counterclockwise _ to the PILOT
position. Press in control knob for five (5) seconds (see Page 20).

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.

6. With control knob pressed in, press and release ignitor hutton. 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.

ThermocoL '_itor Electrode

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
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 TO APPLIANCE

Shutting Off Heater

1. Press in and turn control knob clockwise _ to the HIGH position.

2. Turn control knob clockwise _ to the pilot position.

3. Press in control knob and turn clockwise _ to the OFF position.

Shutting Off Burners Only (pilot stays lit)

I. Turn control knob clockwise _ to the HIGH position.

2. Press in and turn control knob clockwise _ to the pilot position.

OPERATING

HEATER

Manually-

Controlled Models

Continued

OPERATING

HEATER

Thermostatically-

Controlled Model

MANUAL LIGHTING PROCEDURE

1. Follow steps 1 through 5 under Lighting Instructions, pages 20 and 21.

2. Depress control knob and light pilot with matcb.

3. KeeI)control knob pressed in for 30 seconds after lighting pilot. After 30 seconds,
release control knob. Now follow step 8 on page 21.

1 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.

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.

I

1029_0

OPERATING

HEATER

Thermostatically-

Controlled Model

Continued

INSPECTING

BURNERS

TO TURN OFF GAS TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise _ to the OFF position.

Shutting Off Burners Only (pilot stays lit)

1. Turn control knob clockwise _ to the PILOT position.

THERMOSTAT CONTROL OPERATION

(Thermostat-Controlled Models Only)

The thermostat control knob can be set to any comfort level between lit 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 secomls,
release control knob. Now follow step 8, page 23.

Check pilot flame pattern and burner flame patterns often.

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.

Thermocou

\ )[e Pilot Burner Thermoc_

Figure 24 - Correct Pilot Figure 25 - Incorrect Pilot

Flame Pattern Flame Pattern

If pilot flame pattern is incorrect, as shown in Figure 25

• turn heater off (see To Turn OffGas to Appliance, page 21 [manually-con-
trolled models] or above [thermostat-controlled model])

• see Troubleshooting, pages 25 through 28

m

102990

OPERATING

HEATER

Thermostatically-

Controlled Model

Continued

1. STOP! Read the safety information above.

2. Make sure manual shutoff valve is fully open.

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.

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 booking up to gas
supply. If so, the control knob may need to be pressed in fur 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 secomls,
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.

Thermocouple _ _ Ignitor Electrode

Pdot Burner

Figure 23 - Pilot

8. Turn control knob counterclockwise _ to desired heating level. The

burners should light. Set control knob to any heat level between H! and LO.

CAUTION

Do not try to adjust heating levels by using the manual shutoff valve.

Continued

t02'390

CLEANING

AND

MAINTENANCE

TROUBLE-

SHOOTING

Note: All troubleshoot-

ing items are listed in

order of operation.

WARNING 1

Turn off heater and let cool before cleaning.

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 hzstalling Logs, page 19, to properly

replace logs.

• Replace log(s) if broken or chipped (dime-sized or larger).

WARNING

Turn off and unplug heater and let cool before servicing. Only a
qualified service person should service and repair heater.

CAUTION

Never use a wire, needle, or similar object to clean ODS/pilot.
This can damage ODS/pilot unit.

OBSERVED POSSIBLE
PROBLEM CAUSE REMEDY

When ignitor button

Is pressed, there is
no spark at ODS/
pilot

l. Ignitor electrode not con-

nected to ignitor cable

2. Ignitor cable pinched or

wet

3. Piezo ignitor nut is loose

4. Broken ignitor cable

5. Bad piezo ignitor

6. Ignitor electrode broken

7. Ignitor electrode posi-
tioned wrong

I. Reconnect ignitor cable

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

Continued M

10_g_3

OBSERVED POSSIBLE
PROBLEM CAUSE REMEDY

TROUBLE-

SHOOTING

Continued

When ignitor button

is pressed, there is

spark at ODS/pilot
but no ignition

1. Gas supply turned offor
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

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 Mainte-

nance, page 25) or
replace ODS/pilot
assembly

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

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 connec-
tion loose at control

valve

6. Thermocouple damaged

7. Control valve damaged

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 25)
or replace ODS/pilot
assembly

5. Hand tighten until snug.
then tighten l/4 turn

more

6. Replace thermocouple

7. Replace control valve

OBSERVED POSSIBLE
PROBLEM CAUSE

TROUBLE-

SHOOTING

Continued

REMEDY

Burner does light

after ODS/pilot is lit

1. Burner orifice clogged

2. Inlet gas pressure is
too low

3. Burner orifice diameter
is too small

1. Clean burner(see

Cleaning and Ma&te-
mince, page 25)or

replace burner orifice

2. Contact local natural gas
company

3. Replace burner orifice

Delayed ignition
burner

1. Manifold pressure is
too low

2. Burner orifice clogged

1. Contact local natural gas
company

2. Clean burner (see

Cleanblg and Mahlte-
nance, page 25) or

replace burner orifice

Burner backfiring
during combustion

1. Burner orifice is
clogged or damaged

2. Damaged burner

3. Gas regulator defective

1. Clean burner (see

Cleaning attd Mainte-
nance, page 25) or

replace burner orifice

2. Replace damaged burner

3. Replace gas regulator

Slight smoke or
odor during initial
operation

I. Not enough air

2. Gas regulator defective

3. Residues from manu-
facturing processes

and logs curing

1. Check burner for dirt
and debris. If found.

clean burner (see

Cleaning and Mainte-
nance, page 25)

2. Replace gas regulator

3. Problem will rtop after a
few hours of operation

Moisture/condensa- 1. Not enough combus- 1. Refer to Air for Com-
tion noticed on tion/ventilation air bustion and Ventilation

windows requirements (page 5)
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

3. Air passageways on
heater blocked

4. Dirty or partially
clogged burner orifice

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 9-12)

4. Clean burner (see

Clecming and Maintenance.

page 25) or replace

burner orifice

Continued

_0_990

TROUBLE-

SHOOTING

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 POSSIBLE

PROBLEM 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 1.
from paint, hair spray,

glues, cleaners, chemi-
cals, new carpet, etc.

(See IMPORTANT
statement above)

2. Gas leak. See Warning 2.

statement at top of
page

Open window and
ventilate room. Stop using
odor causing products
while heater is running

Locate and correct all

leaks (see Checking Gas
Connections, page 17)

Heater shuts off in use
(ODS operates)

1. Not enough flesh 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

Cleanblg and Mainte-
nance, page 25)

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 17)

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 Checkhlg Gas

Connections, page 17)

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 instruc-

tions for Optional
Positioning of Thermostat
Sensing Bulb, page 29.

1_990

OPTIONAL

POSITIONING

OF

THERMOSTAT

SENSING BULB
For Masonry and

Factory-built

Metal Fireplace

1O299O

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 has been provided.
Tools needed: 114" hex driver or socket

1. Remove logs. Locate the gas valve assembly and thermostat sensing blub (see Figure

26).

Gas Valve

Mounting Thermostat
Bracket Sensing Bulb

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

Retaining Clam_

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.

OPTIONAL

POSITIONING

OF

THERMOSTAT

SENSING BULB
For Masonry and

Factory-built

Metal Fireplace

Continued

U

Thermostat
Sensing Bulb

Mounting Clip

Figure 29. Locating Thermostat Sensing Bulb on Masonry Fireplace

If you have a factory-buih rneta firep ace, see Figure 30 for location.

Thermostat
Sensing Bulb

Adhesive-backed
Mounting Clip

,I

J

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

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, r Thermostat

Sensing Bulb

Adhesive-backed
Mounting Clip

t 1/- Do Not Crimp Capillary

Figure 32 - Positioning the Thermostat Sensing Bulb in the Vertical

Position with the Capillary at the Bottom

_02990

TECHNICAL

SERVICE

SPECIFICATIONS

SERVICE

HINTS

1O299O

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).

18" Model 24" Models 30" Model

Btu (Variable) 16,000/30,000 20,000/39,000 20,000/39,0000

Type Gas 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" 10,5" 10.5"
Minimum* 5"

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

• 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.

REPLACEMENT

PARTS

PARTS

CENTRAL

Note: Use only original replacement parts. This will protect your warranty cover-
age for parts replaced under warranty.

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.

Baltimore Electric

1348 Dixwell Avenue

Hamden, CT 06514

1-800-397-7553

203-248-7553

Parts Department

Portable Heater Parts
342 N. County Rd. 400 East

Valparaiso, IN 46383

All States
219-462-7441

1-800-362 -6951

Washer Equipment Co.

1715 Main Street

Kansas City, MO 64108

KS, MO, AR
816-842-3911

East Coast Energy
Products

833 Broadway
W. Long Branch, NJ

07764
908-870-8809
1-800-755-8809

Dayton Hardware
P.O. Box 275

North Dayton Station
Dayton, OH 45404

All States
513-258-3721

OH 1-800-762-3426

Halco Enterprises

208 Carter Drive, Unit 21
West Chester, FA 19382

215-696-2670

1-800-368-0803

FBD

P O BOX1096
Franklin, KY 42134

502-586-1922

1-800-654-8534

Four Flags Power Products

1115 Stateline Road

Niles, MI 49120
616-684-2697
Parts Only

Master Service Center

1184 Wilson NW

Walker, M149504
616-791-4760

1-800-446-t 446

Tarantin Tank Co.

P.O. Box 6129
Freehold, NJ 07728

908-780-9340

1-800-922-0724

Albany Ladder

1586-90 Central Avenue

Albany, NY 12205

NY, MA, VT

518-869-5335

1-800-354-7368

LA Porte's Parts &

Service

2444 N. 5th Street

Hartsville, SC 29550
803-332-0191

Parts Department

Cans Unlimited, Inc.
P.O. Box 645

Taylor, SC 29687
All States

803-879-3009

1-800-845-5301

102990

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.

MANUAL SHUTOFF
VALVE - GA5010

For all models. Manual shutoff valve
with 1/8" NPT tap. Fits i/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 isdesired. (3 lb. bag)

ILLUSTRATED

PARTS

BREAKDOWN

Variable Manually-
Controlled Models

CGD3018N
CGD3924N

CGD3930N

12

I

d

I

I

I

3

18

20-1

20

6 /

J

J

17

15

PARTS LIST This list contains replaceahte parts used in your heater. When ordering parts,

follow the instructions listed under Replacement Parts on page 28 of this manual.

KEY CGD3018N

NO. PARTNUMBER

1 103008-02

2 103009-02

3 103010-02
4 103011-02

5 102774-04BR
6 102844-02

7 102966-02
8 098867-11

9 102798-01
10 102779-03
11 099056-18
12 102843-01
13 102980-01
14 102568-07
15 098508-01
16 098354-01
17 102445-01
18 099387-08

19 098271-07
20 103042-01

20-1 099594-01

20-2 098593-01
21 Ml1084-38
22 098304-03
23 098276-01
24 098249-01
25 099553-01

CGD3924N

PART NUMBER

103008-01
103009-01
103010-01
103011-01
102774-01 BR
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

CGD3930N

PART NUMBER

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

DESCRIPTION QTY.

Back Log (#1) t
Middle Log (#2) 1

Front Log (#3) t

Crossover Log (#4) t

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
Control Valve 1
Valve Retainer Nut 1
Control Knob 1

Piezo Ignitor 1
Pilot Tube 1

Ignitor Cable 1
ODS Pilot 1

Ignitor Electrode 1

Thermocouple 1

Regulator Screw 2
Black Screw, PPH #8-18 9
Hex Head Plug, 1/8 NPT t
Nut, M5 2

Pilot Shield 1

PARTS AVAILABLE -- NOT SHOWN

100563-01
101055-02
100565-01

100639-01
101449-04
101137-02
101416-18
GA6O60

100563-01

101055-02

100565-01

100639-01
101449-04

101137-02
101416-18

GA6O60

100563-01

101055-02

100565-01

100639-01

101449-04

101137-02

101416-18

GA6060

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

IB-

I02990

ILLUSTRATED

PARTS

BREAKDOWN

Thermostatically-

Controlled Manuals

2

CGD3924NT

12

20-1

20

18

24

17

22

23 19

13

21

25

14

\

8

15

I

o ,22

_j

16

PARTS LIST 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,

KEY CGD3924NT
NO. PARTNUMBER

1 103008-01

2 103009-01

3 103010-01

4 103011-01
5 102774-05BR
6 102844-01

7 102966-01
8 098867-11
9 102981-01

10 102983-01
11 099056-16

12 102843-01

13 102772-01

14 101329-20
15 102979-01

16 098544-01

17 102445-01
18 099387-09
19 098271-07
20 103042-01

20-1 099594-01

20-2 098593-01
21 Ml1084-38
22 098304-03
23 099553-01
24 098249-01
25 099211-01

DESCRIPTION QTY.
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

Ignitor Electrode 1

Thermocouple 1

Regulator Screw 2
Black Screw, PPH #8-18 13

Pilot Shield 1
Nut, M5 2

Hex Screw, 10-16 x 2.50 2

PARTS AVAILABLE -- NOT SHOWN

100563-01
101054-01

100565-01
100639-01
101137-02
101416-18

GA6060

Warning Plate
Lighting InstructionsPlate

Warning Plate Fastener
Caution Decal

Hardware Kit
Information Video
Lava Rock

1

1

1
1

1
1
1

NOTES

NOTES

tm

102990

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 impIied.

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
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 B Y 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 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
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:

DESA

INTERNATIONAL

2701 Industrial Drive
P.O. Box 90004

Bowling Green, KY 42102-9004

102990-01
Rev. A

06/96