Desa CGD3924NT, CGD3930NT, CGD3018NT, CGB3924NT, CGB3930NT User Manual
BILTMORE SPLIT OAK, MOUNTAIN OAK,
PREMIUM AGED SPLIT OAK, AND
SMOKY MOUNTAIN OAK UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATERS
VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGNED CERTIFIED
AS VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL
18", 24", and 30" Variable
Manually-Controlled Models
CGD3018N CY2718N
CGD3924N CY3124N
CGD3930N
Patent
Pending
(Smoky Mountain Oak Model Shown)
CGD3924NT CGD3930NT
CGD3018NT CGB3924NT
CGB3930NT CCL3018NT
CCL3924NT CCL3930NTA
18", 24" and 30"
Thermostatically-
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.
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.
— 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: 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 designcertified for these installations in accordance with ANS Z21.11.2.
Exception: Do not install this appliance
in a factory-built fireplace that includes
instructions stating it has not been
tested or should not be used with
unvented gas logs.
WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in
which it is installed. Provisions for adequate combustion and ventilation air must be
provided. Refer to
Air for Combustion and Ventilation
section on page 4 of this manual.
This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes.
This appliance is only for use with type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
VENT-FREE NATURAL 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.
Natural Gas: Natural gas is odorless. An
odor-making agent is added to the gas. The
odor helps you detect a gas leak. However,
the odor added to the gas can fade. Gas may
be present even though no odor exists.
Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this heater.
WARNING: Any change to
this heater or its controls can be
dangerous.
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.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not approved for use with this heater.
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 children when they are in the room
with heater.
You must operate this heater with
a fireplace screen in place. Make
sure fireplace screen is closed
before running heater.
Keep the appliance area clear and
free from combustible materials,
gasoline, and other flammable
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. 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
3. This heater shall not be installed in a
bedroom or bathroom, unless installed
as a vented appliance (Variable Manually-Controlled Models Only). See In-
stalling Damper Clamp Accessory for
Vented Operation, page 10.
4. 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.
5. 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.
6. This log heater is designed to be smokeless. If logs ever appear to smoke, turn off
heater and call a qualified service person.
Note:
During initial operation, slight
smoking could occur due to log curing and
heater burning manufacturing residues.
7. T o prevent the creation of soot, follow
the instructions in Cleaning and Main-
tenance, page 21.
8. 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.
9. 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, pages 4 through 6. If
heater keeps shutting off, see T rouble-
shooting, pages 22 through 24.
10. Do not run heater
• where flammable liquids or vapors
are used or stored
• under dusty conditions
11. Do not use this heater to cook food or
burn paper or other objects.
12. 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.
13. Do not operate heater if any log is broken. Do not operate heater if a log is
chipped (dime-sized or larger).
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OWNER’S MANUAL
SAFETY
INFORMATION
Continued
14. T urn heater of f and let cool before servicing. Only a qualified service person
should service and repair heater.
15. Operating heater above elevations of
4,500 feet could cause pilot outage.
PRODUCT IDENTIFICATION
Crossover Log
Front Log
Piezo
Ignitor
Control Knob
Figure 1 - Vent-Free Gas Log Heater - Duel Burner (Logs May Vary by Model Smoky Mountain Oak Logs Shown)
Back Log
Burner
Middle Log
Base Grate
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 Z223.1, 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 models are not
permitted.
UNPACKING
CAUTION: Do not remove the
metal data plates from the grate
assembly. The data plates contain
important product 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
Back Log
Crossover Log
Front Log
Burner
Piezo
Ignitor
Control Knob
Figure 2 - Vent-Free Gas Log Heater - Single Burner (Mountain Oak Logs Shown)
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3
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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 ANS Z21.11.2 standard for
unvented heaters. State and local codes in
some areas prohibit the use of vent-free
heaters. Non-thermostat models may also
be operated as a vented decorative (ANS
Z21.60) product by opening flue damper.
VENT-FREE NATURAL GAS LOG HEATER
PRODUCT
FEATURES
Continued
SAFETY PILOT
This heater has a pilot with an Oxygen
Depletion 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
requires no matches, batteries, or other
sources to light heater.
AIR FOR
COMBUSTION AND
VENTILATION
WARNING: This heater shall
not be installed in a confined space
or unusually tight construction
unless provisions are provided
for adequate combustion and ventilation air. Read the following instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Today’s homes are built more energy efficient than ever. New materials, increased
insulation, and new construction methods
help reduce heat loss in homes. Home owners
weather strip and caulk around windows and
doors to keep the cold air out and the warm air
in. During heating months, home owners
want their homes as airtight as possible.
While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and
fuel burning appliances draw air from the
house to operate. You must provide adequate fresh air for these appliances. This
will insure proper venting of vented fuelburning appliances.
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
per pa-sec-m2) or less with openings gasketed or sealed
b. weather stripping has been
added on openable windows and
doors
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
and
Ventilation Air
, page 6.
, page 5.
and
-11
kg
De-
Confined and Unconfined Space
The National Fuel Gas Code, ANS Z223.1
defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000
Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed
in that space and an unconfined space as a
space whose volume is not less than 50
cubic feet per 1,000 Btu per hour (4.8 m3 per
kw) of the aggregate input rating of all
appliances installed in that space. Rooms
communicating directly with the space in
which the appliances are installed*, through
openings not furnished with doors, are considered a part of the unconfined space.
This heater shall not be installed in a confined space or unusually tight construction
unless provisions are provided for adequate
combustion and ventilation air.
* Adjoining rooms are communicating only
if there are doorless passageways or ventilation grills between them.
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107123
OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this work sheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between
the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = _________________ cu. ft. (volume of space)
Example:
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 20 ft. (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 + 39,000 Btu/Hr
Total = 79,000 Btu/Hr
51,200 Btu/Hr (maximum the space can support)
79,000 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 ventilation air by one of
the methods described in the
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National Fuel Gas Code, ANS Z223.1, Section 5.3
5
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or applicable local codes.
Continued
VENT-FREE NATURAL GAS LOG HEATER
AIR FOR
COMBUSTION AND
VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside
Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must provide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(see options 1 and 2, Figure 3). You can also
remove door into adjoining room (see option 3, Figure 3). Follow the National Fuel
Gas Code, NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
WARNING: Rework worksheet, adding the space of the
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two permanent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connect these items directly to the outdoors
or spaces open to the outdoors. These spaces
include attics and crawl spaces. 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.
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
Ventilation
Grills
Into Adjoining
Room,
Option 1
Figure 3 - Ventilation Air from Inside Building
Outlet
Air
Inlet
Air
Figure 4 - Ventilation Air from Outdoors
Or
Remove
Door into
Adjoining
Room,
Option
3
12"
Outlet
Air
Inlet Air
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilated
Attic
Ventilated
Crawl Space
12"
To Attic
To
Crawl
Space
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107123
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 solid fuel burning fireplace,
the chimney flue and firebox must
be cleaned of soot, creosote,
ashes, and loose paint by a qualified chimney cleaner. Creosote
will ignite if highly heated. A dirty
chimney flue may create and distribute soot within the house. Inspect chimney flue for damage. If
damaged, operate heater with flue
damper closed.
WARNING: Never install the
heater
• in a bedroom or bathroom unless installed as a vented appliance (Variable ManuallyControlled Models Only) (see
page 10)
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the heater
• in high traffic areas
• in windy or drafty areas
CAUTION: This heater creates warm air currents. These
currents move heat to wall surfaces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as tobacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc) in the air exist, may
discolor walls.
IMPORTANT:
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 natural gas. If your gas supply is
not natural gas, do not install heater. Call
dealer where you bought heater for proper
type heater.
INSTALLATION AND
CLEARANCES (Vent-Free
Operation Only)
WARNING: Maintain the minimum clearances. If you can, provide greater clearances from
floor, ceiling, and adjoining wall.
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling
18", 24", 30" 16" 42"
LOG SIZING REQUIREMENTS
Minimum Firebox Size
Log Front Rear*
Size Height Depth Width Width
18" 17" 14" 24" 20"
24" 17" 14" 28" 21"
30" 17" 14" 34" 24"
*Measured at 14" Depth
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured fireplace, or certified vent-free firebox.
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.
107123
Continued
7
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VENT-FREE NATURAL GAS LOG HEATER
INSTALLATION
Continued
Minimum Clearances For Side
Combustible Material, Side Wall,
and Ceiling
A. Clearances from the side of the fire-
place cabinet to any combustible material and wall should follow diagram
in Figure 5.
Example:
shelf, etc. is made of combustible material and protrudes 3 1/2" from the wall.
This combustible material must be 4"
from the side of the fireplace opening
(see Figure 5).
Note:
into a manufactured firebox, follow
firebox manufacturer’s 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.
The face of a mantel, book-
When installing your gas logs
Minimum Noncombustible
Material Clearances
If Not Using Mantel
Note:
If using a mantel, proceed to If Using
Mantel. If not using a mantel, follow the
information below.
You must have noncombustible material(s)
above the fireplace opening. Noncombustible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have noncombustible
material behind it. Noncombustible material
must extend at least 8" up (for all models). If
noncombustible material is less than 12",
you must install the fireplace hood accessory
(24" and 30" models only). See Figure 6 for
minimum clearances.
IMPORTANT:
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.
If you cannot meet these
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 6 and Figures 7 and 8 on 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.
If you cannot meet these
Example
*
*Minimum 16 inches from Side Wall
Figure 5 - Minimum Clearance for Combustible to Wall
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed. Go to
Installing Damper
Clamp Accessory for Vented
Operation
, page 10.
Noncombustible Requirements for
Material Distance (A) Safe Installation
12" or more Noncombustible material okay.
Between 8" and 12" 24" or 30" Models: Install fireplace hood acces-
sory (GA6050, GA6052, or GA6053 see
ries,
page 27).
18" Model: Noncombustible material okay.
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
(A)
Between 8" and 12",
Accesso-
above. If you
Figure 6 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace
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107123
OWNER’S MANUAL
Hearth
5"
Min.
Combustible
Material
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 in Figure 7, 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 7).
Determining Minimum Mantel
Clearance When Using a Hood
If minimum clearances in Figure 7 are not
met, you must have a hood. When using a
hood there are still certain minimum mantel
clearances required. Follow minimum clearances shown in Figure 8 when using hood.
NOTICE: Surface temperatures of
adjacent walls and mantels become hot during operation. Walls
and mantels above the firebox
may become hot to the touch. If
installed properly, these temperatures meet the requirement of the
national product standard. Follow all minimum clearances
shown in this manual.
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 accept-
able height
• remove the mantel
Mantel Shelf
"
/2
(A)
18" 20" 22" 24"
12"
8" 8" 14" 16
Distances to
Underside of
Mantel
3
/4" 20"
Underside of
Mantel Shelf
Top of Fireplace
Opening
Minimum NonCombustible
Material
10"
8"
6"
1
2
Minimum NonCombustible
Material Height
Figure 7 - Minimum Mantel Clearances Without Using Hood
8"
Min.
Mantel Shelf
12" 15" 18"
Distances to
Underside of
Mantel
20"
Minimum NonCombustible
Material
12"
10"
8"
6"
1
"
/2
2
Hood
(GA6050, GA6052,
(GA6050, GA6052)
and GA6053)
Figure 8 - Minimum Mantel Clearances When Using Hood
All minimum
distances are
in inches
Log Set
24"/30" Models
18" Model
Underside of
Mantel Shelf
All minimum
distances are
in inches
Log Set
18", 24", 30"
All Models
Models
Top of Fireplace
Opening
FLOOR CLEARANCES
A. If installing appliance on the floor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 9).
B. If combustible materials are less than
14" to the fireplace, you must install
appliance at least 5" above the combustible flooring (see Figure 10).
107123
Combustible
14"
Min.
Noncombustible Material
Material
Figure 9 - Minimum Fireplace Clearances
If Installed at Floor Level
9
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Figure 10 - Minimum Fireplace Clearances
Above Combustible Flooring
Continued
VENT-FREE NATURAL 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 clear-
ance 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
27). This will insure vented operation (see
Figure 11). 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.
Figure 11 - Attaching Damper Clamp
Damper
Clamp
Damper
Masonry Fireplace
Damper
Damper
Clamp
Damper
Manufactured Fireplace
Area of Various Standard
Round Flues
Diameter (ins.) Area (sq. ins.)
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Minimum Permanent
Height (ft.) Flue Opening (sq. ins.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
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10
107123
OWNER’S MANUAL
INSTALLATION
Continued
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove the
metal data plates attached to the
heater base assembly. The data
plates contain important warranty
information.
WARNING: You must secure
this heater to fireplace floor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak or log misplacement.
WARNING: If installing in a
sunken fireplace, special care is
needed. You must raise the fireplace floor to allow access to
heater control panel. This will insure adequate air flow and guard
against sooting. Raise fireplace
floor with noncombustible material. Make sure material is secure.
CAUTION: Do not pick up
heater base assembly by the
burner. This could damage
heater. Only handle base assembly by grates.
IMPORTANT:
ers 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 burn-
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose (not provided)
(if allowed by local codes)
• sealant resistant to propane (propane/LP)
gas, not provided
• electric drill with 3/16" drill bit
• flathead screwdriver
1. Apply pipe joint sealant lightly to male
threads of the fitting to be threaded into
gas regulator. Connect approved flexible gas hose to gas regulator of heater
(see Figure 12).
IMPORTANT:
wrench when connecting flexible gas
hose.
2. Locate masonry screws in hardware
package.
3. Position heater base assembly in fire-
place.
4. Place logs in their proper position on heater
base, see Installing Logs on pages 14
through 17.
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
mounting brackets (see Figure 13 or
14). 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" drill bit.
10. Attach base assembly to fireplace floor
using two masonry screws (in hardware
package) (see Figures 13 or 14).
Hold gas regulator with
Flexible Gas Hose
(if allowed by local
codes)
Fitting
Figure 12 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Figure 13 - Attaching Base Assembly to
Fireplace Floor - Dual Burner Model
Figure 14 - Attaching Base Assembly to
Fireplace Floor - Single Burner Model
Heater Gas
Regulator
Masonry
Screw
Mounting
Bracket
Masonry
Screw
Mounting
Bracket
107123
11
Continued
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VENT-FREE NATURAL GAS LOG HEATER
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 service person must connect heater
to gas supply. Follow all local
codes.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* An CSA/AGA design-certified equip-
ment shutoff valve with 1/8" NPT tap is an
acceptable alternative to test gauge connection. Purchase the optional CSA/AGA design-certified equipment shutoff valve from
your dealer. See Accessories, page 27.
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.
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 15).
IMPORTANT:
Install equipment shutoff
valve in an accessible location. The equipment valve is for turning on or shutting off
the gas to the appliance.
Apply pipe joint sealant lightly to male
We recommend that you install a sediment
trap in supply line as shown in Figure 15.
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.
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
CAUTION: Use pipe joint seal-
piping and/or fittings.
ant that is resistant to liquid petroleum (LP) gas.
CSA/AGA DesignCertified Equipment
From
Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
Tee Joint
Pipe
Nipple
Cap
Sediment Trap
Figure 15 - Gas Connection
Shutoff Valve With 1/8"
NPT Tap*
3" Minimum
Approved Flexible Gas
Hose (if allowed by
local codes)
Gas
Regulator
* Purchase the optional CSA/AGA design-certified equipment shutoff valve from your
dealer. See Accessories, page 27.
** Minimum inlet pressure for purpose of input adjustment.
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12
107123
OWNER’S MANUAL
ON
POSITION
OFF
POSITION
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.
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 using compressed air or opening
main gas valve located on or near gas
meter.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment
shutoff valve to gas supply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 16).
2. Pressurize supply piping system by either using compressed air or opening
main gas valve located on or near gas
meter.
3. Check all joints from gas meter to
equipment shutoff valve (see Figure
17). Apply mixture of liquid soap and
water to gas joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
Equipment
Shutoff Valve
Figure 16 - Equipment Shutoff Valve
Gas Meter
Figure 17 - Checking Gas Joints
Open
Closed
Pressure Testing Heater Gas
Connections
1. Open equipment shutoff valve (see Figure 16).
2. Open main gas valve located on or near
gas meter.
3. Make sure control knob of heater is in
the OFF position.
4. Check all joints from equipment shutoff
valve to control valve (see Figure 17).
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 18 and 19 [manually-controlled
models] or pages 19 and 20 [thermostatically-controlled models]). Check
all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 19 [manually-controlled models] or page 20 [thermostatically-controlled models]).
Equipment
Shutoff
Valve
Thermostat Gas Valve or
Control Valve Location
107123
13
Continued
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