Desa CHL3924PR Quick start guide

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WARNING: If the information in this manual is not fol-
lowed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
Also Design-Certified As Vented Decorative Appliances When
Not Used With Hand-Held Thermostat Remote
18”, 24” AND 30” REMOTE READY
(Yellow Flame Model Shown)
CCL3018NR, CCL3018PR, CCL3018NRA, CCL3018PRA
CCL3924NR, CCL3924PR, CCL3924NRA, CCL3924PRA
CHL3924NR, CHL3924PR,
CCL3930NR, CCL3930PR, CCL3930NRA, CCL3930PRA
P
I
L
O
T
O
F
F
O
N
LO
REMOTE
OFF
HI

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2
WARNING: Improper installation, adjustment, altera-
tion, service or maintenance can cause injury or prop-
erty damage. Refer to this manual for correct installation
and operational procedures. For assistance or addi-
tional 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 fire-
place or in a listed ventless firebox enclosure. It is de-
sign-certified for these installations in accordance with
ANSI Z21.11.2. Exception: Do not install this appliance in
a factory-built fireplace that includes instructions stat-
ing 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. Provi-
sions for adequate combustion and ventilation air must
be provided. Refer to Air for Combustion and Ventilation
section on page 5 of this manual.
This appliance may be installed in an aftermarket,* per-
manently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indi-
cated on the rating plate. This appliance is not convert-
ible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Product Identification ........................................... 5
Unpacking ........................................................... 5
Product Features ................................................. 5
Remote Control Accessories ............................... 5
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 8
Operating Heater ............................................... 19
Inspecting Burners ............................................ 22
Cleaning and Maintenance ................................ 23
Troubleshooting ................................................. 24
Illustrated Parts Breakdown and Parts List ....... 28
Specifications .................................................... 32
Wiring Diagram .................................................. 32
Service Hints ..................................................... 32
Technical Service .............................................. 32
Replacement Parts ............................................ 33
Parts Central ..................................................... 33
Accessories ....................................................... 34
Warranty Information ...........................Back Cover

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111161-01E 3
SAFETY INFORMATION
WARNING: This product con-
tains and/or generates chemicals
known to the state of California
to cause cancer or birth defects
or other reproductive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, op-
erate or service this fireplace.
Improper use of this fireplace
can cause serious injury or
death from burns, fire, explo-
sion, 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 head-
aches, dizziness or nausea. If you have these signs,
the heater may not be working properly. Get fresh
air at once! Have heater serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the influence
of alcohol and those at high altitudes.
Natural and Propane/LP Gas: Natural and pro-
pane/LP gases are odorless. An odor-making agent
is added to the gas. The odor helps you detect a gas
leak. However, the odor added to the gas can fade.
Gas may be present even though no odor exists.
Make certain you read and understand all warn-
ings. 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.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not ap-
proved for use with this heater.
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Heater base assembly becomes
very hot when running heater. Keep
children and adults away from hot
surface to avoid burns or clothing
ignition. Heater will remain hot for a
time after shutdown. Allow surface
to cool before touching.
Carefully supervise young chil-
dren when they are in the room
with heater. When using the hand-
held remote accessory, keep se-
lector switch in the OFF position
to prevent children from turning
on burners with remote.
Keep the appliance area clear
and free from combustible ma-
terials, gasoline and other flam-
mable vapors and liquids.
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) in-
side any structure. Locate propane/LP supply
tank(s) outdoors (propane/LP units only).
3. To prevent performance problems, the use of
a propane/LP fuel tank of less than 100 lb.
capacity is not recommended (propane/LP
units only).

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SAFETY INFORMATION
Continued
4. 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
neighborʼs phone. Follow the gas supplierʼs
instructions
• if you cannot reach your gas supplier, call
the fire department
5. This heater shall not be installed in a bedroom
or bathroom unless installed as a vented appli-
ance (see Installing Damper Clamp Accessory
for Vented Operation, page 11).
6. Before installing in a solid fuel burning fire-
place, the chimney flue and firebox must be
cleaned of soot, creosote, ashes and loose paint
by a qualified chimney cleaner. Creosote will
ignite if highly heated. A dirty chimney flue
may create and distribute soot within the house.
Inspect chimney flue for damage. If damaged,
repair flue and firebox before operating heater.
7. Do not burn solid-fuel in a masonry or UL127
factory-built fireplace in which a vent-free
room heater is installed.
8. If fireplace has glass doors, never oper-
ate this heater with glass doors closed. If
you operate heater with doors closed, heat
buildup inside fireplace will cause glass to
burst. Make sure there are no obstructions
across openings of fireplace.
9. 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 may
occur due to log curing and heater burning
manufacturing residues.
10. To prevent the creation of soot, follow the instruc-
tions in Cleaning and Maintenance, page 23.
11. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
12. This heater needs fresh, outside air ventilation
to run properly. This heater has an Oxygen
Depletion Sensing (ODS) safety shutoff system.
The ODS shuts down the heater if not enough
fresh air is available. See Air for Combustion
and Ventilation, page 5. If heater keeps shutting
off, see Troubleshooting, page 24.
13. Do not run heater
• where flammable liquids or vapors are used
or stored
• under dusty conditions
14. Do not use this heater to cook food or burn
paper or other objects.
15. 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.
16. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dime-
sized or larger).
17. Turn heater off and let cool before servicing, install-
ing or repairing. Make sure the remote selector
switch is in the OFF position. Only a qualified ser-
vice person should install, service or repair heater.
18. Make sure the remote selector switch is in the
OFF position when you are away from home
for long periods of time.
19. This heater must not be connected to any
external electrical source.
20. Operating heater above elevations of 4,500
feet may cause pilot outage.
21. Provide adequate clearances around air
openings.
LOCAL CODES
Install and use heater with care. Follow all local
codes. In the absence of local codes, use the lat-
est edition of The National Fuel Gas Code, ANSI
Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Note: Where listed vented decorative logs are
required, thermostat operation is not permitted.
State of Massachusetts: The installa-
tion must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural
gas-fired supplemental room heaters shall
provide to each purchaser a copy of 527
CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for
bedroom and bathroom installation in the
Commonwealth of Massachusetts.

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111161-01E 5
PRODUCT
IDENTIFICATION
Figure 1 - Vent-Free Gas Log Heater
(Logs May Vary By Model)
Log Set
Control
Knob
Base
Grate
Piezo
Ignitor
Optional
Remote
Control
Optional
Selector
Switch
Flame
Adjustment
Knob
UNPACKING
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates
contain important warranty and
safety information.
1. Remove logs and heater base assembly from
carton. Note: Do not pick up heater base as-
sembly 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.
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 realistic dancing,
yellow flames. This heater is designed for vent-free
operation with flue damper closed. It has been
tested and approved to ANSI Z21.11.2 standard
for unvented heaters. This heater may also be
operated as a vented decorative (ANSI Z21.60)
product by opening flue damper (non-thermostat
models only).
SAFETY PILOT
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
heaters. The ODS/pilot shuts off the heater if there
is not enough fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system re-
quires no matches, batteries or other sources to
light heater.
REMOTE CONTROL
ACCESSORIES
There are two optional remote controls that can be
purchased separately for this log heater:
• hand-held ON/OFF remote
• hand-held thermostat remote
See Accessories, page 34.
The hand-held thermostat may not be used where
vented decorative listing is required.
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
not be installed in a confined
space or unusually tight con-
struction unless provisions are
provided for adequate combus-
tion and ventilation air. Read the
following instructions to insure
proper fresh air for this and
other fuel-burning appliances
in your home.
Todayʼs 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 effi-
cient, 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.

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6
AIR FOR COMBUSTION
AND VENTILATION
Continued
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3,
Air for Combustion and Ventilation.
All spaces in homes fall into one of the three fol-
lowing ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 5 through 7 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion and
ventilation. However, in buildings of unusually
tight construction, you must provide additional
fresh air.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the out-
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10-11 kg per pa-sec-m2) or
less with openings gasketed or sealed
and
b. weather stripping has been added on
openable windows and doors and
c. caulking or sealants are applied to
areas such as joints around window
and door frames, between sole plates
and floors, between wall-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.
If your home meets all of the three criteria
above, you must provide additional fresh
air. See Ventilation Air From Outdoors,
page 7.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Heater Location.
Confined Space and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 defines a confined space as a space whose vol-
ume is less than 50 cubic feet per 1,000 Btu per hour
(4.8 m3 per kw) of the aggregate input rating of all
appliances installed in that space and an unconfined
space as a space whose volume is not less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of
the aggregate input rating of all appliances installed
in that space. Rooms communicating directly with
the space in which the appliances are installed*,
through openings not furnished with doors, are
considered a part of the unconfined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Use this work sheet to determine if you have a
confined or unconfined space.
Space: Includes the room in which you will install
heater plus any adjoining rooms with doorless pas-
sageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x
width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 cu. ft.
(volume of space)
If additional ventilation to adjoining room is
supplied with grills or openings, add the volume
of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.
__________ (volume of space) x 20 = (Maxi-
mum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in
the space.
Vent-free fireplace ___________ 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. Di-
rect-vent draws combustion air from the outdoors
and vents to the outdoors.

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111161-01E 7
Example:
Gas water heater __________ Btu/Hr
Vent-free fireplace + ________ Btu/Hr
Total = ________ Btu/Hr
4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
__________ Btu/Hr (maximum the space can support)
__________Btu/Hr (actual amount of Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the space
can support)
79,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the above example is a confined space
because the actual Btu/Hr used is more than the maxi-
mum 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 adjoin-
ing room. If the extra space provides an unconfined
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building.
B. Vent room directly to the outdoors. See Ventila-
tion Air From Outdoors.
C. Install a lower Btu/Hr fireplace, 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 un-
confined space. You will need no additional fresh
air ventilation.
WARNING: If the area in
which the heater may be oper-
ated is smaller than that defined
as an unconfined space or if the
building is of unusually tight
construction, provide adequate
combustion and ventilation air
by one of the methods described
in the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 Section 5.3
or applicable local codes.
AIR FOR COMBUSTION
AND VENTILATION
Continued
40,000
39,000
79,000
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un-
confined space. When ventilating to an adjoining
unconfined space, you must provide two perma-
nent openings: one within 12" of the ceiling and
one within 12" of the floor on the wall connecting
the two spaces (see options 1 and 2, Figure 2). You
can also remove door into adjoining room (see
option 3, Figure 2). Follow the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for
Combustion and Ventilation for required size of
ventilation grills or ducts.
Figure 3 - Ventilation Air from Outdoors
Figure 2 - Ventilation Air from Inside
Building
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12"
of the floor. Connect these items directly to the
outdoors or spaces open to the outdoors. These
spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat-
controlled power vent. Heated air entering the attic
will activate the power vent.

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8
WARNING: Seal any fresh
air vents or ash clean-out doors
located on floor or wall of fire-
place. If not, drafting may cause
pilot outage or sooting. Use a
heat-resistant sealant. Do not
seal chimney flue damper.
WARNING: Never install the
heater
• in a bedroom or bathroom
unless installed as a vented
appliance, see page 11.
• 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 cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning flu-
ids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is beneficial, installing heater
in rooms without enough ventilation air may cause
mildew to form from too much moisture. See Air
for Combustion and Ventilation, page 5.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install heater. Call dealer where you bought
heater for proper type heater.
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 pri-
mary heat source. If you have a
central heating system, you may
run system’s circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
NOTICE: State or local codes
may only allow operation of this
appliance in a vented configura-
tion. Check your state or local
codes.
WARNING: A qualified ser-
vice person must install heater.
Follow all local codes.
WARNING: Make sure the
selector switch is in the OFF po-
sition before installing heater.
WARNING: Before installing
in a solid fuel burning fireplace,
the chimney flue and firebox
must be cleaned of soot, creo-
sote, ashes and loose paint by a
qualified chimney cleaner. Creo-
sote will ignite if highly heated.
A dirty chimney flue may create
and distribute soot within the
house. Inspect chimney flue for
damage. If damaged, repair flue
before operating heater.

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111161-01E 9
WARNING: This appliance
is equipped for (natural or pro-
pane/LP) gas. Field conversion
is not permitted.
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
Side Wall 16" Ceiling: 42"
LOG SIZING REQUIREMENTS
Minimum Firebox
Log Front Rear *
Size Height Depth Width Width
18" 17" 13" 28" 20"
24" 17" 13" 28" 21"
30" 17" 13" 34" 24"
* Measured at 13" depth.
Carefully follow the instructions below. This will
ensure safe installation into a masonry, UL127-listed
manufactured fireplace or listed vent-free firebox.
Minimum Clearances for Side
Combustible Material, Side Wall and
Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 4.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This combus-
tible material must be 4" from the side of the
fireplace opening (see Figure 4).
Note: When installing your gas logs into
a manufactured firebox, follow firebox
manufacturerʼs instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace
opening to the ceiling should not be less
than 42 inches.
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed. Go to Installing Damper
Clamp Accessory for Vented
Operation, page 11.
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 infor-
mation below.
You must have noncombustible material(s) above
the fireplace opening. Noncombustible materials
(such as slate, marble, tile, etc.) must be at least
1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombus-
tible material must extend at least 8" up (for all
models). If noncombustible material is less than
12", you must install the fireplace hood acces-
sory (24" and 30" models only). See Figure 5 for
minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chimney
flue damper open. Go to Installing Damper Clamp
Accessory for Vented Operation, page 11.

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10
INSTALLATION
Continued
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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 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 on page 9
for minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chimney
flue damper open. Go to Installing Damper Clamp
Accessory for Vented Operation, page 11.
Noncombustible Requirements for
Material Safe Installation
Distance (A)
12" or more Noncombustible material
okay.
Between 8" Install fireplace hood
and 12" accessory (GA6050,
GA6052 or GA6053 see
Accessories, page 34).
Less than 8" Noncombustible material
must be extended to at
least 8". See Between 8"
and 12", above. If you
cannot extend material,
you must operate heater
with flue damper open.
Heat Resistant
Material
(A)
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 Clearances
If you meet minimum clearance between mantel
shelf and top of fireplace opening, a hood is not
required (see Figure 6).
Determining Minimum Mantel Clearances
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,
page 11, when using hood.
NOTICE: Surface temperatures
of adjacent walls and mantels be-
come hot during operation. Walls
and mantels above the firebox
may become hot to the touch.
If installed properly, these tem-
peratures meet the requirements
of the national product standard.
Follow all minimum clearances
shown in this manual.
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
12"
8"
(A)
18"
8"
20"
14"
22"
17"
24"
20"
All minimum
distances
are in inches
Log Set
24"/30"
Models
18" Model
2
1/2
"
6"
8"
10"

www.desatech.com
111161-01E 11
Minimum
Noncombustible
Material
8"
Min.
12"
15"
18"
All minimum
distances are
in inches
Log Set
18", 24",
30" Models
20"
2 1/2"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050,
GA6052)
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
INSTALLATION
Continued
Figure 7 - Minimum Mantel Clearances
When Using Hood
All
Models
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• operate the logs only with the
flue damper open
• raise the mantel to an accept-
able height
• remove the mantel.
FLOOR CLEARANCES
A. If installing appliance on the floor level, you
must maintain the minimum distance of 14"
to combustibles (see Figure 8).
B. If combustible materials are less than 14" to
the fireplace, you must install appliance at
least 5" above the combustible flooring (see
Figure 9).
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
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 you choose to use your heater as a manually-
controlled model (no remote control installed),
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 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 34). This will insure vented
operation (see Figure 10, page 12). The damper
clamp will keep damper open. Installation instruc-
tions 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. in.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Area of Various Standard Round Flues
Diameter (inches) Area (sq. inches)
5 20
6 29
7 39
8 51

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12
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates
contain important warranty and
safety information.
WARNING: You must secure
this heater to fireplace floor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.
WARNING: If installing in a
sunken fireplace, special care
is needed. You must raise the
fireplace floor to allow access to
heater control panel. This will in-
sure adequate air flow and guard
against sooting and controls be-
ing damaged. 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.
IMPORTANT: Make sure the heater burners are level.
If heater is not level, heater will not work properly.
Figure 10 - Attaching Damper Clamp
Damper
Damper
Clamp
Damper
Manufactured Fireplace
Masonry Fireplace
Damper
Clamp
Damper
INSTALLATION
Continued
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
Note: Install optional remote receiver and hand-
held remote kit (see Accessories, page 34) before
installing gas log heater. See installation instruc-
tions included with the kit.
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).
2.
Locate masonry screws in hardware package.
3. Position heater base assembly in fireplace.
4.
Place logs in their proper positions on heater base.
5. Center heater base and logs front-to-back and
side-to-side in fireplace.
6. Carefully remove logs without moving
heater base.
7. Mark screw locations through holes in mount-
ing flanges (see Figure 12). If installing in a
brick-bottom fireplace, mark screw locations
in mortar joint of bricks.
8. Remove heater base from fireplace.
9. Drill holes at marked locations using 3/16”
masonry drill bit.
10. Attach base assembly to fireplace floor using
two masonry screws (in hardware package)
(see Figure 12).
11. Connect to gas supply. See Connecting To Gas
Supply, page 13.
Figure 11 - Attaching Flexible Gas Hose
to Heater
Flexible Gas Hose
(if allowed by local codes)
Fitting
Figure 12 - Attaching Base Assembly to
Fireplace Floor
Masonry
Screw
Mounting
Flanges

www.desatech.com
111161-01E 13
For propane/LP units, 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 pres-
sure, 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.
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-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
volume will occur.
Installation must include an equipment shutoff
valve, union and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up. NPT
tap must be upstream from heater (see Figure 14,
page 14).
IMPORTANT: Install equipment shutoff valve
in an accessible location. The equipment shutoff
valve is for turning on or shutting off the gas to
the appliance.
Check your building codes for any special re-
quirements for locating equipment shutoff valve
to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could result
in clogged heater valves.
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified ser-
vice person must connect heater
to gas supply. Follow all local
codes.
CAUTION: Never connect
propane/LP heater directly to the
propane/LP supply. This heater
requires an external regulator
(not supplied). Install the exter-
nal regulator between the heater
and propane/LP supply.
WARNING: Never connect
natural gas heater to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
Installation Items Needed
Before installing heater, make sure you have the
items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certified equipment shutoff valve from your
dealer. See Accessories, page 34.
Figure 13 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down

www.desatech.com 111161-01E
14
INSTALLATION
Continued
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 34.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 14 - Gas Connection
Gas
Control
3" Minimum
CSA Design-
Certified Equipment
Shutoff Valve With
1/8" NPT Tap*
Approved
Flexible
Gas Hose (if
allowed by
local codes)
PROPANE/LP
From External
Regulator (11"
W.C.** to 14" W.C.
Pressure)
NATURAL
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Cap Pipe Tee
Nipple Joint
Sediment Trap
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
We recommend that you install a sediment trap in
supply line as shown in Figure 14. Locate sediment
trap where it is within reach for cleaning. Install
in piping system between fuel supply and heater.
Locate sediment trap where trapped matter is not
likely to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into
heater controls. If sediment trap is not installed or
is installed wrong, heater may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator
with wrench when connecting it
to gas piping and/or fittings.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak detec-
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
heater. See guidelines under Con-
necting to Gas Supply, page 13.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping system.
Pressures in excess of 1/2 psig will damage
heater regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas
or using compressed air.
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection fluid to gas
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6.
Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected fit-
tings for leaks.

www.desatech.com
111161-01E 15
INSTALLATION
Continued
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 15).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas
or using compressed air.
3. Check all joints from propane/LP supply tank
to equipment shutoff valve for propane/LP gas
(see Figure 16) or from gas meter to equipment
shutoff valve for natural gas (see Figure 17).
Apply noncorrosive leak detection fluid to gas
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 15).
2. Open propane/LP supply tank valve or main
gas valve located on or near gas meter for
natural gas.
3. Make sure control knob of heater is in the OFF
position.
4. Check all joints from propane/LP supply tank
to equipment shutoff valve for propane/LP gas
(see Figure 16) or from gas meter to equipment
shutoff valve for natural gas (see Figure 17).
Apply noncorrosive leak detection fluid to gas
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, page 19).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli-
ance, page 20).
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 16 - Checking Gas Joints
Propane/LP
Tank
Equipment
Shutoff Valve
Thermostat Gas Valve or
Control Valve Location
Figure 17 - Checking Gas Joints
Gas Meter
Equipment
Shutoff Valve
Thermostat Gas Valve or
Control Valve Location
INSTALLING REMOTE RECEIVER
UNIT
1.
Disconnect switch wires from the con-
trol valve.
2.
Remove phillips head screws and heat shield.
3. Remove switch plate (see Figure 18). Discard
after removing.
Front
Back
Figure 18 - Switch Plate and Wiring
Harness (Switch Plate and Orientation
May Vary Depending On Model)
Wires
Screws

www.desatech.com 111161-01E
16
INSTALLING WIRELESS HAND-
HELD REMOTE CONTROL
ACCESSORY
Two 9-volt alkaline batteries (not included) are
required to operate this heater with the wire-
less hand-held remote control set. One battery
must be installed in the receiver and one in the
hand-held remote control unit. Note: Only use
alkaline batteries.
Installing 9-Volt Battery in Receiver
1. Locate back of receiver under front burner of
heater.
2. Locate the battery clip mounted on the back
of the receiver.
3. Slide a 9-volt battery through the clip.
4. Attach the terminal wires to the battery.
INSTALLATION
Continued
Front
Back
Figure 19 - Installing Remote Receiver
Remote
Receiver
Screws
Valve
White Wire From
Receiver
Figure 20 - Connecting Wires
Red Wire
From
Receiver
Figure 21 - Installing Receiver on the
Back of the Base
Battery
Clip
9-Volt
Battery
Receiver
Terminal
Wires
Installing 9-Volt Battery (Not Included) in
Hand-Held Remote Control Unit
1. Remove battery cover on back of remote
control unit.
2. Attach terminal wires to the battery. Place
battery into the battery housing.
3. Replace battery cover onto remote control
unit.
Battery
Cover
9-Volt
Battery
Terminal
Wires
Figure 22 - Installing Battery in Hand-
Held Remote Control Unit (CGHRCB
Series)
Remote
Control
Unit
Battery
Housing
Figure 23 - Installing Battery in Hand-
Held Remote Control Unit (CGHRCTB
Series)
Remote Control Unit
4.
Install remote receiver unit onto gas log heater
base using phillips head screws (see Figure 19).
5. Connect wires as shown in Figure 20.

www.desatech.com
111161-01E 17
INSTALLATION
Continued
INSTALLING LOGS
WARNING: Failure to posi-
tion 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.
CAUTION: After installa-
tion and periodically thereafter,
check to ensure that no flame
comes in contact with any log.
With the heater set to HI, check
to see if flames contact any log. If
so, reposition logs according to
the log installation instructions
in this manual. Flames contact-
ing logs will create soot.
Each log is marked with a number. These numbers
will help you identify the log when installing. It
is very important to install these logs exactly as
instructed. Do not modify logs. Only use logs
supplied with heater.
1. Place the front log (#1) on the grate fingers. Make
sure the front log rests firmly between the grate
fingers and the grate base (see Figure 24).
2. Place the base of the middle log (#2) in the
U-shaped slots of the grate base. The cutout
on the right of the middle log should fit over
the burner (see Figure 25). Make sure the front
of the middle log is resting on the tabs of the
grate base.
3. Locate pegs on the bottom of back log (#3).
Slide these pegs into the holes in the grate base
behind the burner (see Figure 26).
4. Locate pegs on the bottom of crossover log
(#4). Slide these pegs into the holes located in
middle log (#2) and back log (#3). See Figure
27, page 18, for placement.
AUTO
OFF
ON
Figure 24 - Installing Front Log (#1)
(CCL3930PR/NR Shown)
Front Log
(#1)
Grate
Fingers
Grate
Base
AUTO
OFF
ON
Figure 25 - Installing Middle Log (#2)
(CCL3930PR/NR Shown)
Middle Log (#2)
Tab
Burner
U-Shaped
Slot
AUTO
OFF
ON
Figure 26 - Installing Rear Log (#3)
(CCL3930PR/NR Shown)
Hole in
Grate
Base
Pegs
Burner

www.desatech.com 111161-01E
18
5. Locate pegs on the bottom of crossover log
(#5). Slide these pegs into the holes located
in crossover log (#4) and front log (#1). See
Figure 28.
For CCL3018PR/NR Only: Locate holes on the
bottom of crossover log (#5). Slide the holes
over the left pegs on middle log (#2) and front
log (#1). See Figure 29.
6. Locate pegs on the bottom of crossover log (#6).
Slide these pegs into the holes located in middle
log (#2) and front log (#1). See Figure 30.
7. For CCL3930PR/NR only, locate holes on the
bottom of crossover log (#7). Slide onto the
pegs located in crossover log (#6) and middle
log (#2). See Figure 31.
8. Add lava rock around base of heater if de-
sired. Do not place any lava rock on logs or
burner.
INSTALLATION
Continued
AUTO
OFF
ON
Figure 27 - Installing Crossover Log (#4)
(CCL3930PR/NR Shown)
Log #2
Log #3
Pegs
Figure 28 - Installing Crossover Log (#5)
(CCL3930PR/NR Shown)
AUTO
OFF
ON
7
Figure 31 - Installing Crossover Log
(#7) to Models CCL3930PR/PRA and
CCL3930NR/NRA Only
Middle Log
(#2)
Crossover
Log (#6)
Holes
Pegs
Figure 30 - Installing Crossover Log (#6)
(CCL3930PR/NR Shown)
AUTO
OFF
ON
Crossover
Log (#4)
Front Log (#1)
Figure 29 - Installing Crossover Log (#5)
(CCL3018PR/PRA and CCL3018NR/NRA Only)
Crossover
Log (#4)
Front Log
(#1)
AUTO
OFF
ON
6
Pegs
Log #2
Front Log (#1)

www.desatech.com
111161-01E 19
OPERATING HEATER
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a fire or explosion may result
causing property damage, per-
sonal 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 neighborʼs phone. Follow the gas
supplierʼs 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, donʼt
try to repair it, call a qualified service tech-
nician 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 op-
erate heater with doors closed,
heat buildup inside fireplace
will cause glass to burst. Make
sure there are no obstructions
across opening of fireplace.
• 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 pres-
ent. Open damper or window to
vent smell. This will only last a
few hours.
Note: Home owners generally prefer to op-
erate 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, col-
umn 1.
2. Make sure equipment shutoff valve is
fully open .
3. Set selector switch in the OFF position.
WARNING: Burners will
come on automatically within
one minute when the selector
switch is in the ON position after
the pilot is lit.

www.desatech.com 111161-01E
20
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
WARNING: Make sure the
selector switch is in the OFF
position when you are away from
home for long periods of time.
Heater will come on automati-
cally with selector switch in the
ON position.
OPERATING HEATER
Continued
4. Press in and turn control knob clockwise
to the OFF position (see Figure 32).
5. 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, page 19. If you donʼt
smell gas, go to the next step.
6. Press in and turn control knob counter-
clockwise to the PILOT position.
Press in control knob for five (5) seconds
(see Figure 32).
Note: You may be running this heater for
the first time after hooking up to gas sup-
ply. If so, the control knob may need to be
pressed in for 30 seconds or more. This will
allow air to bleed from the gas system.
7. 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, page 21.
8. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob.
• If control knob does not pop out when
released, contact a qualified service person
or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4
through 8.
9. Slightly push in and turn control knob coun-
terclockwise to the ON position.
10. Wait one minute and switch selector switch
to the ON position to light burners.
11. Set flame adjustment knob to any level
between HI and LO.
O
F
F
P
I
L
O
T
L
O
I
H
REMOTE
OFF
ON
O
N
Control
Knob
Ignitor
Button Selector Switch
in OFF Position
Flame Adjustment
Knob
Figure 32 - Control Knob and Ignitor
Button Location
Figure 33 - Pilot
Ignitor
Electrode
Pilot Burner
Ignitor
Electrode
Pilot Burner
Propane/LP Gas
Natural Gas
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise to the
OFF position.
2a. Set selector switch in the OFF position.
2b. If Using Optional Hand-Held remote: Set
selector switch in the OFF position to keep
from draining battery.
Shutting Off Burners Only (pilot stays lit)
You may shut off the burners and keep the pilot
lit by doing one of the following:
1. Turn control knob clockwise to the
PILOT position.
2. Use remote control manual OFF button.
3. Set selector switch in the OFF position.