UNVENTED (VENT-FREE)
PROPANE/LP GAS LOG HEATER
(Variable Manually-Controlled Models Also Designed-Certified as
Vented Decorative Appliances)
OWNER’S OPERATION AND INSTALLATION MANUAL
CGG2618P,
CGG3324P(T), and
CGG3630P
Thermostat and
Variably-Controlled Models
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury, or loss of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
— Installation and service must be per-
formed by a qualified installer, service agency, or the gas supplier.
WARNING: Improper installation, adjustment, alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency,
or the gas supplier.
WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fireplace,
or in an approved ventless firebox. It is
design-certified for these installations
in accordance with ANS Z21.11.2. Exception: Do not install this appliance in
a factory-built fireplace that includes
instructions stating it has not been
tested or should not be used with
unvented gas logs.
WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in
which it is installed. Provisions for adequate combustion and ventilation air must be
provided. Refer to
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited by
state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Air for Combustion and Ventilation
Save this manual for future reference.
section on page 4 of this manual.
UNVENTED (VENT-FREE) GAS LOG HEATER
SAFETY
INFORMATION
WARNINGS
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble,
operate, or service this heater.
Improper use of this heater can
cause serious injury or death from
burns, fire, explosion, electrical
shock, and carbon monoxide
poisoning.
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.
Propane/LP Gas: Propane/LP gas is odorless. An odor-making agent is added to the gas.
The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas
may be present even though no odor exists.
Make certain you read and understand all
Warnings. Keep this manual for reference.
It is your guide to safe and proper operation
of this heater.
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. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/
LP supply tank(s) outdoors.
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do
not use any phone in your
building
• immediately call your gas supplier
from a neighbor’s phone. Follo w the
gas supplier’s instructions
• if you cannot reach your gas supplier ,
call the fire department
4. This heater shall not be installed in a
bedroom or bathroom unless installed
as a vented appliance (see Installing
Damper Clamp, page 10).
5. Never install the heater
• in a recreational vehicle
• where curtains, furniture, clothing, or
other flammable objects are less than
42 inches from the front, top, or sides
of the heater
• in high traffic areas
• in windy or drafty areas
6. 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.
7. 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.
8. Y ou must operate this heater with a fireplace screen in place. Make sure fireplace screen is closed before running
heater.
9. This log heater is designed to be smokeless. If logs ever appear to smoke, turn
off heater and call a qualified service
person.
slight smoking could occur due to log
curing and heater burning manufacturing residues.
10. To prevent the creation of soot, follow
the instructions in Cleaning and Main-
tenance, page 18.
11. 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.
Note:
During initial operation,
12. Before using furniture polish, wax, carpet cleaner, or similar products, turn
heater off. If heated, the vapors from
these products may create a white powder residue within burner box or on
adjacent walls or furniture.
13. Do not use a blower insert, heat exchanger insert or other accessory not
approved for use with this heater.
14. This heater needs fresh, outside air ventilation to run properly. This heater has
an oxygen depletion sensor (ODS) pilot light safety system. The ODS shuts
down the heater if not enough fresh air
is available. See Air for Combustion
and Ventilation, pages 4 through 6. If
heater keeps shutting off, see Trouble-
shooting, pages 19 through 21.
15. Do not run heater
• where flammable liquids or vapors
are used or stored
• under dusty conditions
16. Do not use this heater to cook food or
burn paper or other objects.
17. Never place any objects on the heater.
18. Heater base assembly becomes very hot
when running heater. K eep children and
adults away from hot surface to avoid
burns or clothing ignition. Heater will
remain hot for a time after shutdown.
Allow surface to cool before touching.
19. Carefully supervise young children
when they are in the room with heater .
20. 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.
21. Do not operate heater if any log is broken. Do not operate heater if a log is
chipped (dime-sized or larger).
22. Turn heater off and let cool before ser vicing. Only a qualified service person
should service and repair heater.
23. Operating heater above elevations of
4,500 feet could cause pilot outage.
24. To prevent performance problems, do
not use propane/LP tank of less than
100 lbs. capacity.
2
103425
OWNER’S MANUAL
PRODUCT
IDENTIFICATION
Bottom Mid
Log (#2)
Front
Burner
Piezo
Ignitor
Front Log (#3)
Top Log (#4)
Rear Log (#1)
Rear
Burner
PRODUCT
FEATURES
OPERATION
This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
both realistic flames and glowing coals.
This heater is designed for vent-free operation. It has been tested and approved to ANS
Z21.11.2 standard for unvented heaters. State
and local codes in some areas prohibit the
use of vent-free heaters. This heater may
also be operated as a vented decorative
(ANS Z21.60) product by opening the flue
damper (non-thermostat operation only).
SAFETY PILOT
This heater has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).
The ODS/pilot is a required feature for ventfree room heaters. The ODS/pilot shuts off
the heater if there is not enough fresh air.
PIEZO IGNITION SYSTEM
Control Knob
Figure 1 - Vent-Free Gas Log Heater
LOCAL CODES
Install and use heater with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code ANS 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.
Base Assembly
UNPACKING
CAUTION: Do not remove the
metal data plates attached to the
heater base assembly. The data
plates contain important warranty
information.
1. Remove logs and heater base assembly
from carton.
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.
Note:
Do not pick up
This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.
103425
3
UNVENTED (VENT-FREE) GAS LOG HEATER
AIR FOR
COMBUSTION AND
VENTILATION
WARNING: This heater shall
not be installed in a confined space
or unusually tight construction
unless provisions are provided
for adequate combustion and ventilation air. Read the following instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efficient
than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather
strip and caulk around windows and doors to
keep the cold air out and the warm air in.
During heating months, home owners want
their homes as airtight as possible.
While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and
fuel burning appliances draw air from the
house to operate. You must provide adequate fresh air for these appliances. This
will insure proper venting of vented fuelburning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National
Fuel Gas Code. NFPA 54/ANS 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 Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 6 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you
must provide additional fresh air.
Unusually tight construction is defined as construction where:
a. walls and ceilings exposed to the
outside atmosphere have a
continuous water vapor retarder
with a rating of one perm (6 x 10
kg per pa-sec-m2) or less with
openings gasketed or sealed and
b. weather stripping has been
added on openable windows and
doors and
c. caulking or sealants are applied
to areas such as joints around
window and door frames, between sole plates and floors, between wall-ceiling joints, between
wall panels, at penetrations for
plumbing, electrical, and gas
lines, and at other openings.
If your home meets all of the three
criteria above, you must provide additional fresh air. See
From Outdoors
If your home does not meet all of the
three criteria above, proceed to
termining Fresh-Air Flow for Heater
Location,
, page 6.
page 5.
Ventilation Air
-11
De-
Confined and Unconfined Space
The National Fuel Gas Code (ANS Z223.1,
1992 Section 5.3) defines a confined space
as a space whose volume is less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per
kw) of the aggregate input rating of all
appliances installed in that space and an
unconfining space as a space whose volume
is not less than 50 cubic feet per 1,000 Btu
per hour (4.8 m3 per kw) of the aggregate
input rating of all appliances installed in that
space. Rooms communicating directly with
the space in which the appliances are installed*, through openings not furnished
with doors, are considered a part of the
unconfined space.
This heater shall not be installed in a confined space or unusually tight construction
unless provisions are provided for adequate
combustion and ventilation air.
* Adjoining rooms are communicating only
if there are doorless passageways or ventilation grills between them.
4
103425
OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this worksheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between
the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = ________________ cu. ft. (volume of space)
Example:
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:
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater ___________________ Btu/Hr
Gas water heater* ___________________ Btu/Hr
Gas furnace ___________________ Btu/Hr
Vented gas heater ___________________ Btu/Hr
Gas fireplace logs ___________________ Btu/Hr
Other gas appliances* + ___________________ Btu/Hr
Total = ___________________ Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws 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:
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 adjoin-
ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.
Space size 20ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)
2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)
Example:
Gas water heater 40,000 Btu/Hr
Vent-free heater + 33,000 Btu/Hr
Total = 73,000 Btu/Hr
51,200 Btu/Hr (maximum the space can support)
73,000 Btu/Hr (actual amount of Btu/Hr used)
WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space
or if the building is of unusually tight construction, provide adequate combustion and ventilati7on air by one of
the methods described in the
103425
National Fuel Gas Code, ANS Z223.1, 1992, Section 5.3
5
or applicable local codes.
Continued
UNVENTED (VENT-FREE) GAS LOG HEATER
AIR FOR
COMBUSTION AND
VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside
Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must provide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(see options 1 and 2, Figure 2). You can also
remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel
Gas Code NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
WARNING: Rework worksheet, adding the space of the
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.
Ventilation
Grills
Into Adjoining
Room,
Option 1
Figure 2 - Ventilation Air from Inside Building
Or
Remove
Door into
Adjoining
Room,
Option
3
12"
Outlet
Air
Ventilation Grills
Into Adjoining Room,
Ventilated
Attic
12"
Option 2
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two permanent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connect these items directly to the outdoors
or spaces open to the outdoors. These spaces
include attics and crawl spaces.
IMPORTANT:
inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.
Do not provide openings for
Outlet
Air
Inlet
Air
Inlet Air
Figure 3 - Ventilation Air from Outdoors
To Attic
To
Crawl
Space
Ventilated
Crawl Space
6
103425
OWNER’S MANUAL
INSTALLATION
NOTICE: This heater is intended
for use as supplemental heat. Use
this heater along with your primary heating system. Do not install this heater as your primary
heat source. If you have a central
heating system, you may run
system’s circulating blower while
using heater. This will help circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
WARNING: 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 previously-used wood-burning fireplace, clean chimney flue
and firebox. Make sure flue is
free of any creosote. Creosote
will ignite if highly heated. A dirty
chimney flue may create and distribute soot within the house. Inspect chimney flue for damage. If
damaged, operate heater with flue
damper closed.
WARNING: Seal any fresh air
vents or ash clean-out doors located on floor or wall of fireplace.
If not, drafting may cause pilot
outage or sooting. Use a heatresistant sealant. Do not seal
chimney flue damper.
WARNING: Never install the
heater
• in a bedroom or bathroom unless installed as a vented appliance, see page 10
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the heater
• in high traffic areas
• in windy or drafty areas
CAUTION: This heater creates
warm air currents. These currents
move heat to wall surfaces next to
heater. Installing heater next to
vinyl or cloth wall coverings or
operating heater where impurities
(such as tobacco smoke, aromatic
candles, cleaning fluids, oil or
kerosene lamps, etc.) in the air
exist, may discolor walls.
IMPORTANT:
ture to the air. Although this is beneficial,
installing heater in rooms without enough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation, pages 4 through 6.
Vent-free heaters add mois-
CHECK GAS TYPE
Use only propane/LP gas. If your gas supply
is not propane/LP, do not install heater. Call
dealer where you bought heater for proper
type heater.
INSTALLATION AND
CLEARANCES
(Vent-Free Operation Only)
WARNING: Maintain the minimum clearances. If you can, provide greater clearances from
floor, ceiling, and adjoining wall.
MINIMUM FIREPLACE
CLEARANCE TO
COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling
18", 24", 30" 16" 42"
LOG SIZING REQUIREMENTS
Log Minimum Firebox
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,
UL127-listed manufactured fireplace, or
listed vent-free firebox.
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"
103425
16"
Left and
Right Sides
Figure 4 - Minimum Clearance to Wall and
Ceiling
7
Continued
UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLATION
Continued
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed. Go to
Clamp Accessory for Vented
Operation,
Minimum Noncombustible
Material Clearances
If Not Using Mantel
Note:
If using a mantel, proceed to If Using
Mantel. If not using a mantel, follow the
information on this page.
You must have noncombustible material(s)
above the fireplace opening. Noncombustible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have noncombustible
material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than
12", you must install the fireplace hood
accessory (24" and 30" models only). See
Figure 5 for minimum clearances.
IMPORTANT:
mum clearances, you must operate heater
with chimney flue damper open. Go to In-
stalling Damper Clamp Accessory for
Vented Operation, page 10.
Installing Damper
page 10.
If you cannot meet these mini-
If Using Mantel
You must have noncombustible material(s)
above the fireplace opening. Noncombustible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have noncombustible
material behind it. Noncombustible material must extend at least 8 inches up (for all
models). If noncombustible material is less
than 12", you must install the fireplace hood
accessory (24" and 30" models only). Even
Noncombustible Requirements for
Material Distance (A) Safe Installation
12" or more Noncombustible material OK.
Between 8" and 12" 24" or 30" Models: Install fireplace hood accessory
(GA6050 or GA6052, see
18" Model: Noncombustible material OK. No hood
accessory needed.
Less than 8" Noncombustible material must be extended to at
least 8". See
cannot extend material, you must operate heater
with flue damper open.
Heat Resistant
Material
if noncombustible material is more than
12", you may need the hood accessory to
deflect heat away from your mantel shelf.
See Figure 5 and Figures 6 and 7, page 9, for
minimum clearances.
IMPORTANT:
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.
Between 8" and 12",
(A)
If you cannot meet these
Accessories,
above. If you
page 28).
Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace
8
103425
OWNER’S MANUAL
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible material clearances, you must also meet required
clearances between fireplace opening and
mantel shelf. If you do not meet the clearances listed below, you will need a hood.
Determining Minimum Mantel
Clearance
If you meet minimum clearance between
mantel shelf and top of fireplace opening, a
hood is not required (see Figure 6).
Determining Minimum Mantel
Clearance When Using a Hood
If minimum clearances in Figure 6 are not
met, you must have a hood. When using a
hood there are still certain minimum mantel
clearances required. Follow minimum clearances shown in Figure 7 when using hood.
NOTICE: If your installation does
not meet the minimum clearances
shown, you must do one of the
following:
• operate the logs only with the
flue damper open
• raise the mantel to an acceptable height
• remove the mantel
FLOOR CLEARANCES
A. If installing appliance on the floor level,
you must maintain the minimum distance of 14" to combustibles (see Figure 8).
B. If combustible materials are less than
14" from the fireplace, you must install
appliance at least 5" above the
combustible flooring (see Figure 9).
Mantel Shelf
10"
8"
6"
1
/2
"
2
Minimum NonCombustible
Material
(A)
12"
8"
Minimum NonCombustible
Material Height
20"
14"
25"
17"
Distances to
Underside of
Mantel
28"
19"
Figure 6 - Minimum Mantel Clearances Without Using Hood
Mantel Shelf
12"
10"
8"
6"
1
/2
"
2
Minimum NonCombustible
Material
8"
Min.
Hood
(GA6050, GA6052)
12" 15" 18"
Distances to
Underside of
Mantel
Figure 7 - Minimum Mantel Clearances When Using Hood
Underside of
Mantel Shelf
30"
20"
Top of Fireplace
Opening
Underside of
Mantel Shelf
All minimum
distances are
in inches
20"
Top of Fireplace
Opening
All minimum
distances are
in inches
Log Set
24"/30" Models
18" Model
Log Sets
18", 24",
& 30" Models
103425
Combustible
14"
Min.
Material
Noncombustible
Material
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
9
Hearth
5"
Min.
Combustible
Material
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Continued
UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLATION
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 noncombustible 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 pr efer vented operation.
If reasons number 1 or 2 above apply to you,
you must permanently open chimney flue
damper. You must install the damper clamp
accessory (to order, see Accessories, page
28). 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.
Chimney Minimum Permanent
Height (ft.) Flue Opening (sq. ins.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
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
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 sooting. Raise fireplace
floor with noncombustible material. Make sure material is secure.
CAUTION: Do not pick up
heater base assembly by burners. This could damage heater.
Only handle base assembly by
grates.
CAUTION: Do not remove the
metal data plates attached to the
heater base assembly. The data
plates contain important warranty
information.
IMPORTANT:
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.
Make sure the heater burners
Damper
Clamp
Damper
Clamp
Damper
Masonry Fireplace
Figure 10 - Attaching Damper Clamp
Manufactured Fireplace
Damper
Damper
10
103425
OWNER’S MANUAL
INSTALLATION
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose (not provided)
(if allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" masonry drill bit
1. Apply pipe joint sealant lightly to male
threads of gas connector and install into
regulator. Connect approved flexible
gas hose to gas regulator of heater (see
Figure 11).
IMPORTANT:
wrench when connecting fittings.
2. Position heater base assembly in fire-
place.
3. Mark screw locations through holes in
front of base. If installing in a brickbottom fireplace, mark screw locations
in mortar joint of bricks.
4. Remove heater base from fireplace.
5. Drill holes at marked locations using
3/16" drill bit. Drill at a 45° angle.
6. Attach base to fireplace floor using
masonry screws in hardware
package (see Figure 12).
7. Connect to gas supply . See Connecting
To Gas Supply, page 12.
Hold gas regulator with
Heater Gas
Regulator
Flexible Gas Hose (if
allowed by local codes)
Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator
Masonry
Screw
Figure 12 - Attaching Heater to Fireplace Floor
103425
Continued
11
UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLATION
CONNECTING TO GAS
SUPPLY
WARNING: A qualified service person must connect heater
to gas supply. Follow all local
codes.
CAUTION: Never connect
heater directly to the propane/LP
supply. This heater requires an
external regulator (not supplied).
Install the external regulator between the heater and propane/LP
supply.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/ LP gas)
• manual shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An CSA design-certified manual shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Purchase the optional CSA design-certified
manual shutoff valve from your dealer. See
Accessories, page 28.
The installer must supply an external regulator. The external regulator will reduce
incoming gas pressure. You must reduce
incoming gas pressure to between 11 and 14
inches of water. If you do not reduce incoming gas pressure, heater regulator damage
could occur. Install external regulator with
the vent pointing down as shown in Figure
13. Pointing the vent down protects it from
freezing rain or sleet.
Propane/LP
Supply Tank
Figure 13 - External Regulator With Vent
Pointing Down
External Regulator
Vent Pointing Down
WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
CAUTION: Use only new,
black iron or steel pipe. Internally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of 1/2"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
From External
Regulator
(11" W.C.** to
14" W.C. Pressure)
Tee Joint
Pipe
Nipple
Cap
3" Minimum
Installation must include a manual shutoff
valve, union, and plugged 1/8" NPT tap.
Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from
heater (see Figure 14).
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 14. Locate sediment trap where it
is within reach for cleaning. Locate sediment trap where trapped matter is not likely
to freeze. A sediment trap traps moisture
and contaminants. This keeps them from
going into heater controls. If sediment trap
is not installed or is installed wrong, heater
may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings.
CSA Design-Certified
Manual Shutoff Valve With
1/8" NPT Tap*
Approved Flexible
Gas Hose (if allowed
by local codes)
Gas
Regulator
Sediment Trap
Figure 14 - Gas Connection
* Purchase the optional CSA design-certified manual shutoff valve from your dealer. See
Accessories, page 28.
** Minimum inlet pressure for purpose of input adjustment.
12
103425
OWNER’S MANUAL
N
T
O
INSTALLATION
Continued
CHECKING GAS
CONNECTIONS
WARNING: Test all gas piping and connections for leaks
after installing or servicing. Correct all leaks at once.
WARNING: Never use an open
flame to check for a leak. Apply a
mixture of liquid soap and water
to all joints. Bubbles forming show
a leak. Correct all leaks at once.
CAUTION: Make sure external regulator has been installed
between propane/LP supply and
heater. See guidelines under
necting to Gas Supply
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of 1/2 PSIG
1. Disconnect heater and its individual
manual shutoff valve from gas supply
piping system. Pressures in excess of
1/2 psig will damage heater regulator.
2. Cap off open end of gas pipe where
manual shutoff valve was connected.
3. Pressurize supply piping system by either using compressed air or opening
propane/LP supply tank valve.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and manual shutoff
valve to gas supply. Check reconnected fittings for leaks.
Con-
, page 12.
Test Pressures Equal To or Less Than
1/2 PSIG
1. Close manual shutoff valve (see Figure 15).
2. Pressurize supply piping system by either using compressed air or opening
propane/LP supply tank valve.
3. Check all joints from propane/LP supply tank to manual shutoff valve (see
Figure 16). Apply mixture of liquid
soap and water to gas joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
Manual
Shutoff
Valve
Figure 15 - Manual Shutoff Valve
Propane/LP
Supply Tank
Figure 16 - Checking Gas Joints
O
Open
POSI
PO
Closed
Pressure Testing Heater Gas
Connections
1. Open manual shutoff valve (see Figure 15).
2. Open propane/LP supply tank valve.
3. Make sure control knob of heater is in
the OFF position.
4. Check all joints from manual shutoff
valve to thermostat gas valve (thermostat-controlled models) or control valve
(variably-controlled models) (see Figure 16). 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 15 and 16 [ThermostatControlled Models] or pages 16
and 17 [Variable ManuallyControlled Models]). Check all other
internal joints for leaks.
7. Turn of f heater (see To Turn Off Gas to
Appliance, page 16 [Thermostat-Controlled Models] or page 17
[Variable Manually-Controlled
Models]).
Manual
Shutoff
Valve
Thermostat Gas Valve or
Control Valve Location
103425
13
Continued
UNVENTED (VENT-FREE) GAS LOG HEATER
3
INSTALLATION
Continued
INSTALLING LOGS
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. Slide rear log (#1) into place behind
rear burner . Make sure flat areas at bottom of log are behind front burner (see
Figure 17).
2 . Slide bottom mid log (#2) into place in
behind front burner. Make sure tabs at
bottom of log are behind rear burner
(see Figure 18).
3. Place front log (#3) into place in front
of bottom mid log (#2) (see Figure 19).
Make sure notches on bottom rest on
grate prongs.
4. Finally place top log (#4) over bottom
mid log (#2) by matching the notches
under log (#4) with the raised blocks
of log (#2) (see Figure 20).
Rear Log (#1)
Figure 17 - Installing Rear Log
Bottom Mid Log (#2)
2
Tab
Figure 18 - Installing Bottom Mid Log
Front Log (#3)
Figure 19 - Installing Front Log
Top Log (#4)
4
4
Figure 20 - Installing Top Log
14
103425
OWNER’S MANUAL
OPERATING
HEATER
Thermostat-Controlled
Models
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 y our 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. Ne ver 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:
Home owners generally prefer to
operate their heater with the chimney
damper closed. This will put all the heat
into the room. However, there may be
times you will desire the full flames of the
Hi heat setting but will find the heat
output excessive. You can open the chimney damper (if you have one) fully or
partially to release some of the heat.
WARNING: Damper handle
will be hot if heater has been
running.
1. STOP! Read the safety information
in column 1.
2. Make sure manual shutoff valve is
fully open.
3. T urn contr ol knob clockwise
to the OFF position.
HI
PILOT
OFF
LO
4. Wait f ive (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, column 1. If you don’t
smell gas, go to the next step.
5. T urn contr ol knob counterclockwise
to the PILOT position. Press
in control knob for five (5) seconds
(see Figure 21).
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
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 allo w
air to bleed from the gas system.
6. With control knob pressed in, pr ess 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 repair s are
made, light pilot with match. T o light
pilot with match, see Manual Light-
ing Procedure, page 16.
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. W ait one (1) minute
for system to reset before lighting
pilot again.
8. Turn control knob counterclockwise
to desired heating level. The
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.
Thermocouple
Ignitor Electrode
Pilot Burner
103425
Ignitor Button
Figure 21 - Control Knob and Ignitor
Button Location
Control Knob
15
Figure 22 - Pilot
Continued
UNVENTED (VENT-FREE) GAS LOG HEATER
OPERATING
HEATER
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise
to the OFF position.
Shutting Off Burners Only (pilot
stays lit)
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 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 burners to
remain fully on, without modulating down
in most cases.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Light-
ing Instructions, page 15.
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 15.
Variable Manually-Controlled
Models
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 g as 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. Ne ver 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:
Home owners generally prefer to
operate their heater with the chimney
damper closed. This will put all the heat
into the room. However, there may be
times you will desire the full flames of the
High heat setting but will find the heat
output excessive. You can open the chimney damper (if you have one) fully or
partially to release some of the heat.
WARNING: Damper handle
will be hot if heater has been
running.
1. STOP! Read the safety information
column 2.
2. Make sure manual shutoff valve is
fully open.
3. Press in and turn control knob clockwise
position.
to the OFF
Clockwise
HI
PILOT
OFF
LO
Ignitor Button
Figure 23 - Control Knob and Ignitor Button Location
16
Control Knob
103425
OWNER’S MANUAL
OPERATING
HEATER
Continued
4. Wait f ive (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, page 16. If you don’t smell
gas, go to the next step.
5. Press in control knob and turn counter clockwise
tion. Keep control knob pressed in for
five (5) seconds (see Figure 23, page 16).
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
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, pr ess 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 light, contact
a qualified service person or gas supplier for repairs. Until repairs are
made, light pilot with match. T o light
pilot with match, see Manual
Lighting Procedure.
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.
8. Push in and turn control knob counterclockwise
position. Both burners should light.
Set control knob to desired setting.
Thermocouple
to the PILOT posi-
C-clockwise
C-clockwise
to the HIGH
Ignitor Electrode
Pilot Burner
VARIABLE CONTROL
OPERATION
The variable control valve can be set to
any heat setting and flame height desired
between high and low by simply turning
the control knob until that setting is attained. Even the lowest setting provides
realistic flames and glowing embers from
two burners. Selecting higher settings produces greater heat output. This results in
increased heating comfort.
WARNING: Do not operate
heater between pilot and high.
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.
Clockwise
2. Turn the 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 the control knob clockwise
to the HIGH position.
Clockwise
2. Press in and turn control knob clockwise
to the pilot position.
Clockwise
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting Instructions, page 16.
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, column 1.
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 25 shows a correct pilot flame pattern.
Figure 26 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.
If pilot flame pattern is incorrect, as shown
in Figure 26
• turn heater off (see To Turn Off Gas to
Appliance, page 16 [Thermostat-Controlled Models] or page 17 or [Variable
Manually-Controlled Models])
• see Troubleshooting, pages 19 through 21
Thermocouple
Figure 25 - Correct Pilot Flame Pattern
Thermocouple
Figure 26 - Incorrect Pilot Flame Pattern
Pilot Burner
Pilot Burner
Figure 24 - Pilot
103425
Continued
17
UNVENTED (VENT-FREE) GAS LOG HEATER
INSPECTING
BURNERS
Continued
FRONT BURNER FLAME
PATTERN
Figure 27 shows correct front burner flame
pattern. Figure 28 shows incorrect front
burner flame pattern. The incorrect burner
flame pattern shows yellow tipping at top of
blue flame.
WARNING: If yellow tipping
occurs, your heater could produce increased levels of carbon
monoxide. If front burner flame
pattern shows yellow tipping, follow instructions at bottom of this
page. Yellow flame on rear burner
is normal.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by heater, causing brief patches
of orange flame.
If front burner flame pattern is incorrect, as
shown in Figure 28
• turn heater off (see To Turn Off Gas to
Appliance, page 16 [Thermostat-Controlled Models] or page 17 [Variable
Manually-Controlled Models])
• see Troubleshooting, pages 19 through 21
Figure 27 - Correct Front Burner Flame
Pattern
Yellow Tipping At
Top of Blue Flame
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burners, and circulating air passageways of
heater clean. Inspect these areas
of heater before each use. Have
heater inspected yearly by a qualified service person. Heater may
need more frequent cleaning due
to excessive lint from carpeting,
bedding material, pet hair, etc.
CLEANING BURNER
INJECTOR HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper
amount of air to mix with the gas. This
provides a clean burning flame. Keep these
holes clear of dust, dirt, and lint. Clean these
air inlet holes prior to each heating season.
Blocked air holes will create soot. We recommend that you clean the unit every 2,500
hours of operation or every three months.
We also recommend that you keep the burner
tube and pilot assembly clean and free of
dust and dirt. To clean these parts we recommend using compressed air no greater than
30 PSI. Your local computer store, hardware store, or home center may carry compressed air in a can. You can use a vacuum
cleaner in the blow position. If using compressed air in a can, please follow the directions on the can. If you don't follow directions on the can, you could damage the pilot
assembly.
1. Shut off the unit, including the pilot.
Allow the unit to cool for at least thirty
minutes.
2. Inspect burner, pilot, and primary air
inlet holes on injector holder for dust
and dirt (see Figure 29).
3. Blow air through the ports/slots and
holes in the burner.
4. Check the injector holder located at the
end of the burner tube again. Remove
any large particles of dust, dirt, lint, or
pet hairs with a soft cloth or vacuum
cleaner nozzle.
5. Blow air into the primary air holes on
the injector holder.
6. In case any large clumps of dust have
now been pushed into the burner repeat
steps 3 and 4.
Clean the pilot assembly also. A yellow tip
on the pilot flame indicates dust and dirt in
the pilot assembly. There is a small pilot air
inlet hole about two inches from where the
pilot flame comes out of the pilot assembly
(see Figure 30). With the unit off, lightly
blow air through the air inlet hole. You may
blow through a drinking straw if compressed
air is not available.
Injector Holder
Ports/Slots
Burner
Tube
Primary Air Inlet
Holes
Figure 29 - Injector Holder On Outlet
Burner Tube
Pilot Air Inlet
Hole
Pilot Assembly
Figure 30 - Pilot Inlet Air Hole
LOGS
• If you remove logs for cleaning, refer to
Installing Logs, page 14, to properly replace logs.
• Replace log(s) if broken or chipped
(dime-sized or larger).
Figure 28 - Incorrect Front Burner Flame
Pattern
18
103425
OWNER’S MANUAL
TROUBLESHOOTING
Note:
For additional help, visit DESA
International’s Technical Service web
site at www.desatech.com.
Note:
All troubleshooting items are listed in
order of operation.
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition
WARNING: Turn off and unplug heater and let cool before
servicing. Only a qualified service person should service and
repair heater.
POSSIBLE CAUSE
1. Ignitor electrode not connected 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 positioned wrong
1. Gas supply turned off or manual shutoff
valve closed
2. Control knob not in PILOT position
3. Control knob not pressed in while in PILOT position
4. Air in gas lines when installed
5. Depleted gas supply
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot. This can damage ODS/
pilot unit.
REMEDY
1. 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
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. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 18) or replace ODS/
pilot assembly
7. Replace gas regulator
ODS/pilot lights but flame goes out when
control knob is released
103425
1. Control knob not fully pressed in
2. Control knob not pressed in long enough
3. Safety interlock system has been triggered (thermostat models only)
4. Manual shutoff valve not fully open
5. 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
6. Thermocouple connection loose at control valve
7. Thermocouple damaged
8. Control valve damaged
www.desatech.com
19
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. W ait one minute for safety interlock system to reset. Repeat ignition operation
4. Fully open manual shut-off valve
5. A) Contact local propane/LP gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 18) or replace ODS/
pilot assembly
6. Hand tighten until snug, then tighten 1/4
turn more
7. Replace thermocouple
8. Replace control valve
Continued
UNVENTED (VENT-FREE) GAS LOG HEATER
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
One or both burners do not light after ODS/
pilot is lit
Delayed ignition of one or both burners
Burner backfiring during combustion
Yellow flame in front burner during burner
combustion
Slight smoke or odor during initial operation
POSSIBLE CAUSE
1. Burner orifice(s) clogged
2. Inlet gas pressure is too low
3. Mislocated crossover tube
4. Burner orifice(s) diameter is too small
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
1. Residues from manufacturing processes
and logs curing
REMEDY
1. Clean burner(s) (see Cleaning and
Maintenance, page 18) or replace
burner orifice(s)
2. Contact local propane/LP gas company
3. Contact qualified service person
4. Replace burner orifice(s)
1. Contact local propane/LP gas company
2. Clean burner(s) (see Cleaning and
Maintenance, page 18) or replace
burner orifice(s)
3. Contact qualified service person
1. Clean burner (see Cleaning and Mainte-
nance, page 18) or replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner(s) for dirt and debris. If
found, clean burner(s) (see Cleaning
and Maintenance, page 18)
2. Replace gas regulator
1. Problem will stop after a few hours of
operation
Moisture/condensation noticed on windows
Heater produces a whistling noise when
burners are lit
White powder residue forming within burner
box or on adjacent walls or furniture
1. Not enough combustion/ventilation air
1. Turning control knob to HI position
when burners are cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner
orifice(s)
1. When heated, vapors from furniture polish, wax, carpet cleaners, etc. turn into
white powder residue
www.desatech.com
20
1. Refer to Air for Combustion and Ventilation requirements (page 4)
1. Turn control knob to LO position and
let warm up for a minute
2. Operate burners until air is removed
from line. Have gas line checked by local propane/LP gas company
3. Observe minimum installation clearances (see pages 7 through 9)
4. Clean burners (see Cleaning and Main-
tenance, page 18) or replace burner
orifice(s)
1. Turn heater off when using furniture
polish, wax, carpet cleaners, or similar
products
103425
TROUBLESHOOTING
Continued
WARNING: If you smell gas
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
OWNER’S MANUAL
IMPORTANT:
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.
Operating heater where impurities in air exist may create odors. Cleaning
OBSERVED PROBLEM
Heater produces a clicking/ticking noise
just after burners are lit or shut off
Heater produces unwanted odors
Heater shuts off in use (ODS operates)
Gas odor even when control knob is in OFF
position
POSSIBLE CAUSE
1. Metal expanding while heating or contracting while cooling
1. Heater burning vapors from paint, hair
spray, glues, cleaners, chemicals, new
carpet, etc. (See
ment above)
2. Low fuel supply
3. Gas leak. See Warning statement at
top of page
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Gas leak. See Warning statement at
top of page
2. Control valve defective
IMPORTANT
state-
REMEDY
1. This is common with most heaters. If
noise is excessive, contact qualif ied service person
1. Open window to ventilate room. Stop using odor causing products while heater
is running
2. Refill supply tank
3. Locate and correct all leaks (see
Checking Gas Connections, page 13)
1. Open window and/or door for ventilation
2. Contact local propane/LP gas company
3. Clean ODS/pilot (see Cleaning and
Maintenance, page 18)
1. Locate and correct all leaks (see
Checking Gas Connections, page 13)
2. Replace control valve
Gas odor during combustion
Log set cycles to pilot, but room temperature drops to a lower than ideal level before
log set comes back on
103425
1. Foreign matter between control valve
and burner
2. Gas leak. See Warning statement at
top of page
1. Thermostat sensing bulb needs to be repositioned
www.desatech.com
21
1. Take apart gas tubing and remove foreign matter
2. Locate and correct all leaks (see
Checking Gas Connections, page 13)
1. Reposition thermostat sensing bulb (see
Instructions for Optional Positioning of
Thermostat Sensing Bulb, page 23)
UNVENTED (VENT-FREE) GAS LOG HEATER
OPTIONAL
POSITIONING OF
THERMOSTAT
SENSING BULB
FOR MASONRY AND
FACTORY-BUILT METAL
FIREPLACE
If your log set cycles to pilot, but the room
temperature drops to a lower than ideal
comfort level before the log set comes
back on, you may want to reposition the
thermostat sensing bulb.
The thermostat sensing bulb is located on
the gas valve assembly. This location allows the thermostat to keep the room temperature at an ideal comfort level for most
fireplace applications. For positioning the
thermostat sensing bulb elsewhere, an adhesive-backed mounting clip is available.
Tools needed:
• 5/16" hex driver or socket
1. Locate the gas valve assembly and thermostat sensing bulb (see Figure 31).
2. With 5/16" hex dri ver or socket, loosen
the thermostat screw. Carefully slide
the thermostat sensing bulb out of the
retaining clamp (see Figure 33).
Note:
Do not remove the scre w. Make
sure you tighten the screw after removing the thermostat sensing bulb.
IMPORTANT:
thermostat sensing bulb or capillary . A
crimped capillary will not allow thermostat to operate properly. It cannot be
repaired, the valve must be replaced.
3. The thermostat sensing bulb may be
located to the lower right front side of
fireplace. Determine location of sensing bulb, but do not mount sensing bulb
until step 5. If you have a masonry fireplace, see Figure 34 for location.
If you have a factory-built metal fireplace, see Figure 35 for location.
If your fireplace has glass doors, position sensing bulb directly behind door
gap on right bottom side (see Figure 36).
Do not force or bend the
4. The mounting clip must be a minimum
of 3" from bottom of fireplace to prevent crimping of capillary. Once you
have decided on a location, clean the
area thoroughly. Remove the paper
backing from the adhesive on back of
mounting clip. Press the clip into the
new location so that the thermostat
sensing bulb will be positioned
vertically with the capillary at the bottom (see Figure 37). Slide the thermostat sensing bulb into the clip.
IMPORTANT:
Figure 31 - Location of Gas Valve
Assembly and Thermostat Sensing Bulb
Figure 32 - Adhesive-backed Mounting
Clip
Figure 33 - Removing Thermostat Sensing
Bulb
Do not crimp capillary.
Gas Valve
Assembly
Thermostat
Sensing Bulb
Capillary
Screw
Retaining
Clamp
Thermostat
Sensing
Bulb
Thermostat
Sensing Bulb
Adhesive-backed
Mounting Clip
Figure 34 - Locating Thermostat Sensing
Bulb on Masonry Fireplace
Thermostat
Sensing
Bulb
Adhesivebacked
Mounting Clip
Figure 35 - Locating Thermostat Sensing
Bulb on Factory-built Metal Fireplace
Thermostat
Sensing
Bulb
Adhesivebacked
Mounting
Clip
Figure 36 - Installing Thermostat Sensing
Bulb behind Glass Doors
Capillary
Figure 37 - Positioning the Thermostat
Sensing Bulb in the Vertical Position
with the Capillary at the Bottom
Glass Doors
Thermostat
Sensing
Bulb
Adhesivebacked
Mounting
Clip
Do Not Crimp
Capillary
22
103425
OWNER’S MANUAL
SPECIFICATIONS
Model CGG3324PT CGG2618P CGG3324P CGG3630P
Btu (Variable) 20,000/33,000 16,000/26,000 20,000/33,000 21,500/36,000
Type Gas Propane/LP Only Propane/LP Only Propane/LP Only Propane/LP Only
Ignition Piezo Piezo Piezo Piezo
Manifold Pressure 7.9" W.C. 7.9" W.C. 7.9" W.C. 7.9" W.C.
Inlet Gas Pressure (in. of water)
Maximum 14" 14" 14" 14"
Minimum* 11" 11" 11" 11"
Shipping Weight 38 lbs. 36 lbs. 38 lbs. 40 lbs.
* For purpose of input adjustment
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low
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
propane/LP gas supplier.
TECHNICAL
SERVICE
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).
You can also visit DESA International’s
Technical Service web site at
www.desatech.com.
REPLACEMENT
PARTS
Note:
Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), call DESA International’s Technical Service Department at 1-800-323-5190.
When calling DESA International, have
ready
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the defec-
tive part to the factory.
PARTS NOT UNDER
WARRANTY
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
either contact your nearest Parts Central (see
page 28) or call DESA International’s Parts
Department at 1-800-972-7879 for referral
information.
When calling DESA International, have ready
• model number of your heater
• the replacement part number
103425
23
UNVENTED (VENT-FREE) GAS LOG HEATER
ILLUSTRATED
PARTS
BREAKDOWN
VARIABLE MANUALLYCONTROLLED MODELS
CGG2618P
CGG3324P
CGG3630P
2
4
1
3
27
27-1
27-2
21
7-2
7-1
7
25
5
10
6
12
29
16
17
8
18
29
23
22
24
21
25
26
19
20
9
11
13
15
14
24
103425
OWNER’S MANUAL
PARTS LIST
VARIABLE MANUALLYCONTROLLED MODELS
CGG2618P
CGG3324P
CGG3630P
KEY PART NUMBER FOR
NO. CGG2618P CGG3324P CGG3630P DESCRIPTION QTY.
1 103681-04 103682-04 103683-04 Rear Log (#1) 1
2 103681-02 103682-02 103683-02 Bottom Mid Log (#2) 1
3 103681-01 103682-01 103683-01 Front Log (#3) 1
4 103681-03 103682-03 103683-03 Top Log (#4) 1
5 098249-01 098249-01 098249-01 Nut 4
6 101006-01 101006-01 101006-01 Pilot Bracket 1
7 101330-01 101330-05 101330-06 Front Burner Assembly 1
7-1 101008-01 101008-01 101008-01 Crossover Burner Gasket 1
7-2 101007-01 101007-01 101007-01 Crossover Burner 1
8 100999-01 100999-02 100999-03 Rear Burner Assembly 1
9 101331-10 101331-08 101331-09 Base Assembly (Includes Decals) 1
10 098271-07 098271-06 098271-06 Ignitor Cable 1
11 102445-01 102445-01 102445-01 Piezo Ignitor 1
12 098867-10 098867-10 098867-10 Gas Regulator 1
13 M11084-38 M11084-38 M11084-38 Screw 2
14 101011-01 101011-02 101011-03 Inlet Tube 1
15 098354-01 098354-01 098354-01 Control Knob 1
16 098462-03 098462-03 098462-03 Control Rod 1
17 098325-01 098325-01 098325-01 Roll Pin 1
18 098508-01 098508-01 098508-01 Valve Retainer Nut 1
19 102568-02 102568-02 102568-02 Gas Valve 1
20 101005-01 101005-01 101005-01 Valve Bracket 1
21 M11084-26 M11084-26 M11084-26 Screw 4
22 101004-10 101004-01 101004-02 Rear Burner Injector 1
23 101004-10 101004-02 101004-06 Front Burner Injector
24 102258-01 102258-01 102258-01 Burner Tube 1
25 099387-08 099387-08 099387-08 Pilot Tube 1
26 098276-01 098276-01 098276-01 1/8” Plug 1
27 099059-02 099059-02 099059-02 O.D.S. Pilot 1
27-1 098594-01 098594-01 098594-01 Ignitor Electrode 1
27-2 098593-01 098593-01 098593-01 Thermocouple 1
This list contains replaceable parts used in your heater. When ordering parts, follow the
instructions listed under Replacement Parts on page 23 of this manual.
103425
PARTS AVAILABLE — NOT SHOWN
100563-01 100563-01 100563-01 Warning Plate 1
101054-01 101054-01 101054-01 Lighting Instructions Plate 1
100565-01 100565-01 100565-01 Warning Plate Fastener 1
100639-01 100639-01 100639-01 Caution Decal 1
101137-03 101137-03 101137-03 Hardware Kit 1
101416-28 101416-28 101416-28 Information Video 1
GA6060 GA6060 GA6060 Lava Rock 1
25
UNVENTED (VENT-FREE) GAS LOG HEATER
ILLUSTRATED
PARTS
BREAKDOWN
THERMOSTATCONTROLLED MODELS
CGG3324PT
4
2
1
3
7
7-1
7-2
6
29
10-2
10
10-1
8
13
9
15
12
17
14
13
16
18
19
8
11
20
8
27
26
6
30
25
23
22
5
24
21
28
29
26
103425
OWNER’S MANUAL
PARTS LIST
THERMOSTATCONTROLLED MODEL
CGG3324PT
This list contains replaceable parts used in your heater. When ordering parts, follow the
instructions listed under Replacement Parts on page 23 of this manual.
KEY PART
NO. NUMBER DESCRIPTION QTY.
1 103682-04 Rear Log (#1) 1
2 103682-02 Bottom Mid Log (#2) 1
3 103682-01 Front Log (#3) 1
4 103682-03 Top Log (#4) 1
5 102764-01 Heat Shield 1
6 M11084-26 Screw 5
7 099059-02 O.D.S. Pilot 1
7-1 098594-01 Ignitor 1
7-2 098593-01 Thermocouple 1
8 098249-01 Nut 4
9 101006-01 Pilot Bracket 1
10 101330-05 Front Burner Assembly 1
10-1 101008-01 Gasket, Crossover Burner 1
10-2 101007-01 Crossover Burner 1
11 100999-02 Rear Burner Assembly 1
12 101331-08 Base Assembly (with decals) 1
13 098271-06 Ignitor Cable 1
14 102445-01 Piezo Ignitor 1
15 098867-10 Gas Regulator 1
16 M11084-38 Screw 2
17 102810-02 Inlet Tube 1
18 098354-01 Control Knob 1
19 102013-01 Control Rod 1
20 100000-01 Cotter Pin 1
21 101053-01 Adapter 1
22 099211-01 Screw 1
23 098544-01 Thermostat Clamp 1
24 101329-18 Thermostat Gas Valve Assy. 1
25 100994-01 Thermovalve Bracket 1
26 101004-01 Rear Burner Injector 1
27 101004-02 Front Burner Injector 1
28 102811-01 Thermostat Burner Tube 1
29 099387-09 Pilot Tube 1
30 102255-01 Strap
103425
PARTS AVAILABLE — NOT SHOWN
100563-01 Warning Plate 1
101054-01 Lighting Instructions Plate 1
100565-01 Warning Plate Fastener 1
100639-01 Caution Decal 1
101137-03 Hardware Kit 1
101416-28 Information Video 1
GA6060 Lava Rock 1
27
UNVENTED (VENT-FREE) GAS LOG HEATER
PARTS CENTRALS
These Parts Centrals are privately owned businesses. They have agreed to support our
customer’s needs by providing original replacement parts and accessories. When calling a
Parts Central, ask for the Parts Department.
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
Parts Department
F B D
P. O. Box 1096
1720 Kummer Road
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 Parts Distributors
1184 Wilson Ave. NW
Walker, MI 49504
616-791-0505
US 1-800-446-1446
Fax: 616-791-8270
Parts Department
Washer Equipment Co.
1715 Main Street
Kansas City, MO 64108
KS, MO, AR
816-842-3911
Parts Department
East Coast Energy Products
707 Broadway
W. Long Branch, NJ 07764
908-870-8809
1-800-755-8809
Parts Department
Tarantin Tank Co.
P.O. Box 6129
Freehold, NJ 07728
908-780-9340
1-800-922-0724
Parts Department
Albany Ladder
1586-90 Central Avenue
Albany, NY 07728
NY, MA, VT
1-800-354-7368
518-869-5335
Parts Department
Dayton Hardware
P.O. Box 275
North Dayton Station
Dayton, OH 45404
All States
513-258-3721
OH 1-800-762-3426
Parts Department
Halco Enterprises
208 Carter Drive, Unit 21
West Chester, PA 19382
610-430-7717
US 1-800-368-0803
Parts Department
LA Porte's Parts & Service
2444 North 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
Parts Department
ACCESSORIES
Purchase these heater accessories from your
local dealer. If they can not supply these
accessories, call DESA International’s Parts
Department at 1-800-972-7879 for 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 1/2" NPT pipe.
FIREPLACE HOOD
Black - GA6050
Brass - GA6052
For all models. Helps deflect heat away
from mantel or wall above fireplace.
DAMPER CLAMP - GA6080
(Not Shown)
For variably controlled models. Permanently
opens chimney flue damper for vented operation. Can be used only with non-thermostat accessories.
LAVA ROCK - GA6060
(Not Shown)
For all models. Order when additional rock
is desired. (3 lb. bag)
28
103425
OWNER’S MANUAL
NOTES
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103425
29
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 PROPANE/LP GAS LOG HEATERS
DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first
purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
To make a claim under this warranty the Bill of Sale or cancelled check must be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to
proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST
be obtained through authorized dealers of this product and/or DESA International who will provide original factory replacement parts.
Failure to use original factory replacement parts voids this warranty. The heater MUST be installed by a qualified installer in accordance
with all local codes and instructions furnished with the unit.
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that fail or become
damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost,
labor, transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT;
THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE TO TWO (2) YEARS FROM THE DATE OF FIRST PURCHASE; AND DESA INTERNATIONAL’S
LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNATIONAL SHALL
NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential
damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write:
INTERNATIONAL
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
103425 01
NOT A UPC
103425-01
Rev. D
11/01
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