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
MODELS
VGL18NRA, VGL18PRA
VGL24NRA, VGL24PRA
VGL30NRA, VGL30PRA
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 performed by a quali-
fied installer, service agency or the gas supplier.
Save this manual for future reference.
For more information, visit www.desatech.com
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 a listed ventless firebox enclosure. It is
design-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
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 6 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 the type of gas indi
cated 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
TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identification ...........................................
Local Codes ........................................................ 5
Unpacking ........................................................... 5
Product Features ................................................. 5
Remote Control Accessories ...............................
Air For Combustion and Ventilation .....................
Installation ........................................................... 8
Operating heater ............................................... 19
Inspecting Burners ............................................ 22
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Cleaning and Maintenance ................................ 23
Troubleshooting .................................................
5
Wiring Diagram .................................................. 28
Service Hints ..................................................... 28
Technical Service ..............................................
5
Replacement Parts ............................................ 28
Specifications ....................................................
6
Accessories ....................................................... 29
Illustrated Parts Breakdown and Parts List ....... 30
Warranty Information ...........................
Back Cover
112882-01D
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24
28
28
SAFETY INFORMATION
WARNING: This product contains 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
be fore tr ying to assemb le,
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 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 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
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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-
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dren when they are in the room
with heater. When using the handheld remote accessory, keep selector 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 flammable vapors and liquids.
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SAFETY INFORMATION
Continued
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).
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,
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 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 operate 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
instructions in Cleaning and Maintenance,
page 23.
page 12).
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
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to run properly. This heater has an Oxygen De
pletion 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 6. 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.
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16. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dimesized or larger).
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17. Turn heater off and let cool before servicing,
installing or repairing. Make sure the remote
selector switch is in the OFF position. Only a
qualified service 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. Prov ide adeq ua te clearan ce s around air
openings.
State of Massachusetts: The installa
tion must be made by a licensed plumber
or gas fitt er in the Common we alth of
Massachusetts.
Sel lers 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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112882-01D
Left Top Log
Left Bottom Log
PRODUCT IDENTIFICATION
Rear Log
Right Crossover Log
Electronic
Ignitor Button
Ember Bed Burner
Optional Remote
Control
Flame Adjustment
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 lat
est edition of The National Fuel Gas Code, ANSI
Z223/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.
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 assembly by back burner. This could damage
heater.
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.
Right Top Log
Right
Bottom Log
Remote Sensor
with Switch
Control Knob
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 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.
ELECTRONIC IGNITION SYSTEM
This heater has an electronic ignitor. This system requires no matches 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 29.
The hand-held thermostat may not be used where
vented decorative listing is required.
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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.
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.
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 6 through 8 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
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 8.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Heater Location.
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Confined Space and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu
per hour (4.8 m
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.
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* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
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kg per pa-sec-m2) or less
3
per kw) of the aggregate input
DETERMINING FRESH-AIR FLOW
FOR FIREPLACE 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
fireplace 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)
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,
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112882-01D
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ve
ntilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
AIR FOR COMBUSTION
AND VENTILATION
Continued
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2,560 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: 2,560 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
Gas water heater*
Gas furnace
Vented gas heater
Gas fireplace logs
Other gas appliances* + ________
Total = ________
* Do not include direct-vent gas appliances. Di
rect-vent draws combustion air from the outdoors
and vents to the outdoors.
Example:
Gas water heater
Vent-free fireplace + ________
Total = ________
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 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 ad
ditional 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, page 8.
C. Install a lower Btu/Hr fireplace, if lower Btu/Hr
size makes room unconfined.
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
40,000
39,000
79,000
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
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 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 National Fuel Gas Code,
ANSI Z223.1/NFPA 54 Section 5.3
or applicable local codes.
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
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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.
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Figure 2 - Ventilation Air from Inside
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Building
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Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION
AND VENTILATION
Continued
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 thermostatcontrolled power vent. Heated air entering the attic
will activate the power vent.
Figure 3 - Ventilation Air from Outdoors
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 appli
ance in a vented configuration.
Check your state or local codes.
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WARNING: A qualified service person must install heater.
Follow all local codes.
WARNING: If optional handheld remote accessory has been
installed, make sure the selector
switch is in the OFF position
before installing heater.
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, repair flue
before operating heater.
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
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 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
112882-01D
INSTALLATION
Continued
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, 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, pages
6 through 8.
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.
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LOG SIZING REQUIREMENTS
Log Front Rear
Size Height Depth Width Width*
18",24", 17" 13" 28" 21"
30"
Minimum Firebox Size With Blower
18",24", 17" 14" 34" 22
30"
*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 combustible material must be 4" from the side of the
fireplace opening (see Figure 4).
Note: When installing your gas logs into
a man uf actur ed fireb ox , foll ow fir ebox
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.
Minimum Firebox Size
3
/8"
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
Example
is not permitted.
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only)
WARNING: Maintain the
minimum clearances. If you
can, provide greater clearances
*Minimum 16 inches from Side Wall
Figure 4 - Minimum Clearance for Side
Combustible Material, Side Wall and
Ceiling
*
from floor, ceiling and adjoining
wall.
NOTICE: Manual control heaters
may be used as a vented product.
MINIMUM FIREPLACE
CLEARANCE TO
COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling
18", 24", 30" 16" 42"
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 12.
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Heat Resistant
Material
(A)
INSTALLATION
Continued
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 noncombus
tible material is less than 12", you must install the
fireplace hood accessory (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,
Noncombustible Requirements
Material for Safe
Distance (A) Installation
12" or more Noncombustible
Between 8" and 12" Install fireplace hood
Less than 8" Noncombustible
page 12.
material okay.
accessory (GA6050,
GA6052 or GA6053,
see Accessories,
page 29).
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.
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 11
for minimum clearances.
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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 12.
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, page 11).
Determining Minimum Mantel Clearances
When Using a Hood
If minimum clearances in Figure 6, page 11 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.
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Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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112882-01D
INSTALLATION
Minimum NonCombustible
Material
8"
Min.
12"
15"
18"
All minimum
distances are
in inches
Log Set
24" Models
20"
2
1
/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050, GA6052
GA6053
)
Top of Fireplace
Openin
g
Underside of
Mantel Shelf
Mantel Shel
f
Minimum NonCombustible
Material
Minimum NonCombustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
12"
(A)
18"
20"
22"
24"
All minimum
distances are
in inches
Log Set
24" Models
2
1
/2
"
6"
8"
10"
Continued
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.
Figure 6 - Minimum Mantel Clearances Without Using Hood
Figure 7 - Minimum Mantel Clearances When Using Hood
112882-01D 11
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INSTALLATION
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
Continued
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).
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 29). 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.
Minimum
Chimney Permanent Flue
Height (ft.) Opening (sq. ins.)
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
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 manuallycontrolled 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.
Area of Various
Standard
Round Flues
Diameter Area
(inches) (sq. inches)
5 20
6 29
7 39
8 51
Damper
Clamp
Damper
Masonry Fireplace
Figure 10 - Attaching Damper Clamp
Damper
Manufactured
Fireplace
12
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112882-01D
INSTALLATION
Continued
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 insure adequate air flow
and guard against sooting and
controls being damaged. Raise
fireplace floor with noncombustible material. Make sure material
is secure.
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. Care fully rem ov e logs withou t 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 14.
Flexible Gas Hose
(if allowed by local codes)
Fitting
-
CAUTION: Do not pick up
heater base assembly by the
Figure 11 - Attaching Flexible Gas Hose
to Heater
burner. This could damage
heater. Only handle base as
-
sembly by grates.
IMPORTANT: Make sure the heater burners are
level. If heater is not level, heater will not work
properly.
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 pro
vided
• electric drill with 3/16" masonry drill bit
Note: Install optional remote receiver and handheld remote kit (see
installing gas log heater. See installation instruc
112882-01D 13
Accessories, page 29) before
-
Figure 12 - Attaching Base Assembly to
Fireplace Floor
-
www.desatech.com
Masonry
Screw
Mounting
Flanges
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
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.
-
WARNING: A qualified service 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 external regulator between the heater
and propane/LP supply.
WARNING: Never connect
natural gas heater to private (nonutility) gas wells. This gas is com
-
monly 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 29.
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
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 15).
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.
Propane/LP
Supply Tank
External
Regulator
-
Vent Pointing Down
Figure 13 - External Regulator With Vent
14
www.desatech.com
Pointing Down
112882-01D
INSTALLATION
Continued
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.
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if allowed
by local codes)
3" Minimum
Cap Pipe Tee
Gas
Control
Figure 14 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 29.
** Minimum inlet pressure for purpose of input
adjustment.
Nipple Joint
Sediment Trap
From
External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
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 detection fluid
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 Con
-
necting to Gas Supply, page 11.
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 equipme nt shutoff
valve to gas supply. Check reconnected fit
tings for leaks.
Test Pressures Equal To or Less Than 1/2
PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 15,
page 16).
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.
-
112882-01D 15
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INSTALLATION
Continued
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.
Equipment
Shutoff Valve
Figure 15 - Equipment Shutoff Valve
Equipment
Shutoff Valve
Valve Location
Figure 16 - Checking Gas Joints
Open
Closed
Propane/LP Tank
INSTALLING OPTIONAL REMOTE
ACCESSORIES
Installing Remote Receiver
Remote control accessories are available sepa
rately (see Accessories, page 29).
1. If unit is already installed in fireplace, continue
with these instructions. If unit has not been
installed in fireplace, go to step 6 and continue
installation of remote accessory.
WARNING: Turn off heater
and let cool before handling any
part of heater. Make sure gas is
turned of to unit.
2. Carefully remove logs and set aside.
3. Locate mounting screws on sides of heater
base assembly and remove screws. Set screws
aside for reinstallation.
4. Disconnect gas line from heater base as shown
in Figure 11, page 13.
WARNING: A qualified service person must connect and
disconnect gas to heater. Follow
all local codes.
5. Remove heater base from fireplace.
6. Install receiver bracket to base with phillips
screws provided in hardware kit as shown in
Figure 18.
7. Disconnect jumper wire from control valve at
TPTH and TH locations (see Figure 19).
-
Equipment
Shutoff Valve
Valve Location
Figure 17 - Checking Gas Joints
16
Gas Meter
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Remote
Receiver
Bracket
Phillips Screws
Figure 18 - Installing Remote Receiver
Jumper
Wire
Figure 19 - Disconnecting Jumper Wire
Bracket
Control
Valve
from Control Valve
112882-01D
INSTALLATION
Continued
8. Install remote receiver into receiver bracket
using pads and push button clips provided
with receiver (see Figure 20).
9. Connect wires to control valve at the TPTH and
TH locations as shown in Figure 21. Note: Make
sure excess wire does not interfere with burner
or pilot.
10. If heater was removed from fireplace before
installation of remote accessory, see Installing
Heater Base Assembly on page 13 to reinstall
heater into fireplace. Test gas connection for
leaks (see Checking Gas Connections, pages
15 and 16).
11. If logs were removed from heater for install
remote accessory, replace logs (see
Logs, pages 18 and 19).
9-Volt
Battery
Bracket
Push Button
Clips
Figure 20 - Installing Remote Receiver
White Wire
From Receiver
Red Wire From
Receiver
Figure 21 - Connecting Wires
Pad
Installing
Battery
Clip
Terminal
Wires
Control
Valve
Installing Batteries for Remote Receiver
and Hand Held Remote Control
Two 9-volt alkaline batteries (not included) are
required to operate this heater with the wireless
hand-held remote control set. One battery must
be installed in the receiver and one in the handheld remote control unit. Note: Only use alkaline
batteries.
Installing 9-Volt Battery in Receiver
1. Locate back of receiver behind receiver
bracket mounted on base assembly.
2. Locate the battery clip mounted on the back
of the receiver (see Figure 20).
3. Slide a 9-volt battery through the clip.
4. Attach the terminal wires to the battery.
Installing 9-Volt Battery (Not Included) in HandHeld 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.
Terminal
Battery Cover
Wires
Remote
Control
9-Volt
Battery
Battery
Housing
Unit
Figure 22 - Installing Battery in Hand-
Held Remote Control Unit (CGHRCB
Series)
Remote
Terminal
Control Unit
Wires
9-Volt
Battery
Battery
Cover
Battery
Housing
Figure 23 - Installing Battery in HandHeld Remote Control Unit (CGHRCTB
Series)
112882-01D 17
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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.
CAUTION: After installation 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 contacting logs will create soot.
1. Align two pins at rear of base with two holes
in bottom of rear log (#1). Place logs on pins
(see Figure 24).
2. Align pin at center of base with hole in right
bottom log (#2) and notch in front of log to
right grate finger. Place log on base as shown
in Figure 25.
3. Align notch on left bottom log (#3) with left
grate finger and place log on base as shown
in Figure 25.
4. Align hole in bottom of log #4 with pin on
base as shown in Figure 26. The end of log
#4 will rest on base slightly behind log #2.
5. Align holes in bottom of left top log (#5) with
pins on top of left bottom log (#3). Place log
on pins (see Figure 27, page 19).
6. Align holes in bottom of right top log (#6) with
pins on top of right bottom log (#2). Place log
on pins (see Figure 27, page 19).
7. The effect of glowing embers can be created
by placing rock wool on front burner. For best
effect, use only the smallest amount necessary
to create the glow. Tear rock wool into dimesize pieces and place pieces on and around
front burner. Do NOT place rock wool in
area of pilot or rear burner.
8. Add lava roc k around base to heate r if
desired. Do not place lava rock on logs
or burner. Do NOT place lava rock on or
around front burner.
CAUTION: Placing lava rock
on or around front burner will
cause severe sooting. Please
keep ember material (rock wool)
separate from lava rock.
WARNING: All previously
applied loose material must be
removed prior to reapplication.
Log #3
Left
Grate
Finger
Figure 25 - Installing Logs #2 and #3
Log #4
Log #2
Right
Grate
Finger
Figure 24 - Installing Log #1
18
Log #1
www.desatech.com
Log #1
Log #2
Figure 26 - Installing Log #4
112882-01D
LIGHTING
INSTRUCTIONS
Log #5
INSTALLATION
Continued
Log #6
WARNING:
• If fireplace has glass doors,
Log #3
Log #2
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.
Figure 27 - Installing Logs #5 and #6
OPERATING HEATER
FOR YOUR SAFETY
READ BEFORE LIGHTING
• 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
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result
causing property damage, personal injury or loss of life.
A. This appliance has a pilot which must be
lighted by hand. When lighting the pilot,
follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not
use any phone in your building.
• Immediately call your gas supplier from
a neig hbor ʼs phon e. Fo llo w 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 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.
112882-01D 19
www.desatech.com
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, column 1.
2. Make sure equipment shutoff valve is
fully open.
3. Press in and turn control knob clockwise
to the OFF position (see Figure 28,
page 20).
4. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP! Follow “B” in the
safety information, column 1. If you donʼt
smell gas, go to the next step.
-
OPERATING HEATER
Continued
5. Press in and turn control knob counterclockwise
Press in control knob for five (5) seconds
(see Figure 28).
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.
6. With control knob pressed in, press and
release electronic ignitor button. This will
light pilot. Hold in 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.
7. 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 3
through 7 beginning on page 19.
8. Slightly push in and turn control knob coun
terclockwise
9. Set flame adjustment knob to any level
between HI and LO.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
Electronic
Ignitor Button
Figure 28 - Control Knob and Ignitor
to the PILOT position.
to the ON position.
Control Knob
Flame Adjustment Knob
Button Location
Pilot Burner
Propane/LP Gas
-
Pilot Burner
Natural Gas
Figure 20 - Pilot
Ignitor
Electrode
Ignitor
Electrode
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
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
PILOT position.
2. Use remote control manual OFF button.
3. Set selector switch in the OFF position.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 6 under Lighting
Instructions, beginning on page 19.
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 9 under
Lighting Instructions, column 1.
to the
to the
20
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112882-01D
OPERATING HEATER
Continued
OPTIONAL HAND-HELD
REMOTE OPERATION
Note: All remote control accessories must be
purchased separately (see Accessories, pages
29). Follow instructions included with the re
mote control.
NOTICE: You must light the pilot
before using the hand-held remote control unit. See Lighting
Instructions on page 19.
After lighting, let pilot flame burn for about
one minute. Turn control knob to ON posi
tion. Adjust flame adjustment knob anywhere
between HI and LO. Slide the selector switch
to the REMOTE position (see Figure 30).
Not e: The burner may light if hand-held
remote was on when selector switch was last
turned off. You can now turn the burner on and
off with the hand-held remote control unit.
IMPORTANT: Do not leave the selector switch
in the REMOTE or ON position when the pilot
is not lit. This will drain the battery.
Control Knob in
On Position
Selector Switch in Remote Position
Figure 30 - Setting the Selector Switch,
Control Knob and Flame Adjustment
Knob for Remote Operation
ON/OFF SERIES (MODEL GHRCB)
Hold the control button on the hand-held remote
until burner turns on. Hold the control button
again until burner turns off (see Figure 31).
Figure 31 - On/Off Hand-Held Remote
Control Unit (GHRCB)
Flame Adjustment
Knob
Control Button
Turns Burners
On and Off
TO LOCK
remote control until light stops flashing. Handheld remote control is now locked. If the fire is
on it will be turned off automatically. In the
locked state, the light will not light up when
any button is pressed.
TO UNLOCK
on hand-held remote control until the light
-
stops flashing. The hand-held remote is now
unlocked.
press both buttons on hand-held
press both buttons together
THERMOSTAT SERIES (MODEL
GHRCTB)
The hand-held remote can be operated using
either the manual mode (MANU) or thermo
static mode (AUTO) (see Figure 32). To select
Fahrenheit/Centigrade mode display, carefully
-
press the ˚C/˚F mode button with the end of a
paper clip or similar blunt object.
Digital
Display
Shows
Temperature
and Settings
Turns
Burners On
or Off
Decreases
Room
Temperature
in AUTO
Mode
Manual Mode
1. Press the POWER and LOCK buttons
2. Press the MANU button to turn on the
3. Press the POWER and LOCK buttons
Auto (Thermostatic) Mode
1. Press the POWER and LOCK buttons
2. Press AUTO button to select this mode.
3. Set the desired room temperature by press
Locks System to
Prevent Accidental
Ignition
Figure 32 - Thermostat Hand-Held
Remote Control Unit (GHRCTB)
together to turn on the hand-held remote
control.
fireplace.
together to turn off the fireplace.
together to turn on the hand-held remote
control.
ing the TEMP + or - buttons.
Turns HandHeld Remote
On or Off and
Allows You
to Choose
the Manual
Setting
Selects Auto
Setting
Increases
Room
Temperature
in AUTO
Mode
-
-
112882-01D 21
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OPERATING HEATER
Continued
4. Press the POWER and LOCK buttons
together to turn off the fireplace
Note: Do not leave the hand-held remote in
the AUTO mode close to the fireplace. The
radiant heat from the fireplace will turn off the
fireplace. Ideally, place the hand-held remote
in the center of the room facing towards the
fireplace.
Note: Do not hold the hand-held remote for
a long time. Body temperature will affect its
operation in the AUTO mode.
Safety Features
When away from home for an extended period
of time or as a child safety feature to prevent
accidental ignition of the fireplace, the receiver
ON/OFF/REMOTE switch should be in the
OFF position.
Auto Shutoff Feature
1. If the average room temperature exceeds
82 degrees Fahrenheit (28 degrees Centigrade), the hand-held remote control will
perform a safety override and shut the
fireplace off. This feature is not available
in the MANU mode.
2. The receiver continuously receives signals
from the hand-held remote to control the
room temperature. If the hand-held remote
is misplaced, obstructed or for any reason
cannot transmit to the receiver, the receiver
will shut off the fireplace after 8 minutes.
Key Pad Lock Feature
This feature allows the user to lock/unlock
the keypad on the hand-held remote in the
MANU or AUTO mode to prevent inadvertent
operation (i.e. children operating the hand-held
remote control, etc.). The keypad is locked in
either on or off. Press the POWER and LOCK
buttons together to turn the unit on or off.
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 33 shows a correct pilot flame pattern.
Figure 34 shows an incorrect pilot flame pattern.
The incorrect pilot flame is not properly heating
the thermocouple. When the thermocouple cools,
the heater will shut down. If pilot flame pattern is
incorrect, as shown in Figure 34
• turn heater off (see To Turn Off Gas to Appli
ance, page 20)
• see Troubleshooting
Note: The pilot flame on natural gas units will
have a slight curve, but the flame should be blue
and have no yellow or orange color.
Propane/LP Gas
Figure 33 - Correct Pilot Flame Pattern
Propane/LP Gas Natural Gas
Figure 34 - Incorrect Pilot Flame Pattern
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame holes
should be open with yellow flame present. All
round burner flame holes should be open with a
small blue flame present. Some burner flame holes
may become blocked by debris or rust, with no
flame present. If so, turn off heater and let cool.
Remove blockage, blocked burner flame holes
will create soot.
, page 24
Pilot Burner
Thermocouple
Natural Gas
Pilot Burner
Thermocouple
-
22
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112882-01D
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner 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.
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 as
sembly. There is a small pilot air inlet hole about
two inches from where the pilot flame comes out
of the pilot assembly (see Figure 36). 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.
Primary Air
Inlet Holes
-
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
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,
lint and pet hair. Clean these air inlet holes prior to
each heating season. Blocked air holes will create
soot. We recommend that you clean the unit every
three months during operation and have heater
inspected yearly by a qualified service person.
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 com
pressed 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
in rear burner for dust and dirt (see Figure 35).
3. Blow air through the holes in the burner.
4. Rem ove any l ar ge particl es of dus t, dirt,
lin t or pet hair with a soft cloth or vacuum
cle aner nozzle.
Injector
Holder
Figure 35 - Injector Holder On Outlet
Pilot Air
Inlet Hole
Figure 36 - Pilot Inlet Air Hole
Burner Tube
Burner Tube
Pilot
Assembly
Holes in Burner
LOGS
• If you remove logs for cleaning, refer to Installing Logs, page 18, to properly replace logs.
-
• Replace log(s) if broken or chipped (dime-sized
or larger).
MAIN BURNER
Periodically inspect all burner flame holes with the
heater running. All slotted burner flame holes should
be open with yellow flame present. All round burner
flame holes should be open with a small blue flame
present. Some burner flame holes may become
blocked by debris or rust, with no flame present. If
so, turn off heater and let cool. Remove blockage,
blocked burner flame holes will create soot.
112882-01D 23
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TROUBLESHOOTING
WARNING: Turn off heater and let cool before servicing. Only a
qualified service person should service and repair heater.
CAUTION: Never use a wire, needle or similar object to clean
ODS/pilot. This can damage ODS/pilot unit.
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
POSSIBLE CAUSE
1. Ignitor electrode not connected to ignitor cable
2. Ignitor cable pinched or wet
3. Broken ignitor cable
4. Bad battery
5. Ignitor electrode broken
6. Battery not installed, battery
power low or battery not
installed correctly (electronic
ignition models only)
7. Ignitor electrode positioned
wrong
1. Gas supply turned off or equip
ment 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 (pro
pane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry
3. Replace ignitor cable
4. Replace battery
5. Replace pilot assembly
6. Install new alkaline battery in
electronic ignitor. Verify battery is installed correctly
7. Replace pilot assembly
-
1. Turn on gas supply or open
equipment 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 op
eration until air is removed
5. Contact local propane/LP gas
company
6. Clean ODS/pilot (see Cleaning
and Maintenance, page 23) or
replace ODS/pilot assembly
7. Replace gas control
-
24
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112882-01D
OBSERVED PROBLEM
ODS/pilot lights but flame goes
out when control knob is re
leased
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. C o n t r o l k n o b n o t f u l l y
-
pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. Pilot flame no t to uchin g
thermocouple, which allows
thermocouple to cool, causing pilot flame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
5. Therm ocouple conn ection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
REMEDY
1. Press in control knob fully
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds
3. Fully open equipment shutoff
valve
4. A) Contact local natural or
propane/LP gas company
B) Cl e an OD S/pi l o t (s ee
Cleaning and Maintenance
page 23) or replace ODS/pilot
assembly
5. Hand tighten until snug, then
tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
,
One or both burners do not light
after ODS/pilot is lit
Delayed ignition burner
Burner backfiring during com
bustion
Slight smoke or odor during initial
operation
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
4. Rem o te sel ecto r in OFF
position
5. Wire disconnected from gas
control
1. Manif old press ure is too
low
2. Burner orifice clogged
-
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing
processes and logs curing
1. Contact local natural or pro
pane/LP gas company
2. Clean burner(s) (see Cleaning
and Maintenance, page 23) or
replace burner orifice(s)
3. Contact qualified service person
4. Put remo te selector in ON
position
5. See Wiring Diagram, page 28
1. Contact local natural or pro
pane/LP gas company
2. Clean burner (see Cleaning
and Maintenance, page 23) or
replace burner orifice
1. Clean burner (see Cleaning
and Maintenance, page 23) or
replace burner orifice
2. Replace damaged burner
3. Replace gas control
1. Check burner for dirt and
debris. If found, clean burner
(see Cleaning and Mainte
nance, page 23)
2. Replace gas control
3. Problem will stop after a few
hours of operation
-
-
-
112882-01D 25
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OBSERVED PROBLEM
Moisture/condensation noticed
on windows
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Not enough combustion/ventilation air
REMEDY
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
Heater produces a whistling noise
when burner is lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Remote does not function
1. Turning control knob to HI
position when burner is cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orifice
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Battery is not installed.
Battery power is low
1. Tur n contr ol kno b to LO
position and let warm up for
a minute
2. Op erate burner until air is
removed from line. Have gas
line checked by local natural
or propane/LP gas company
3. Observe minimum installa
tion clearances (see pages 9
through 12)
4. Clean burner (see Cleaning
and Maintenance, page 23) or
replace burner orifice
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
1. Replace 9-volt batteries in
receiver and hand-held remote
control
-
26
www.desatech.com
112882-01D
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.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint,
paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These
OBSERVED PROBLEM
Heater produces a clicking/ticking noise just after burner is 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
Gas odor during combustion
POSSIBLE CAUSE
1. Metal expanding while heating
or contracting while cooling
1. Heater burning vapors from
paint, hair spray, glues, clean
ers, chemicals, new carpet,
etc. (See IMPORTANT state-
ment above)
2. Gas leak . See Warning
statement above
1. N o t en o u g h fr e s h air is
available
2. Low line pressure
3. O D S/ p il o t i s p a rt ia l ly
clogged
1. Gas leak . See Warning
statement above
2. Control valve defective
1. Foreign matter between con
trol valve and burner
2. Gas leak . See Warning
statement above
REMEDY
1. This is common with most heaters. If noise is excessive, contact
qualified service person
1. Open window and ventilate
room. Stop using odor causing
products while heater is running
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 15)
1. Open window and/or door for
ventilation
2. Contact local natural or pro
pane/LP gas company
3. Clean ODS/pilot (see Cleaning
and Maintenance, page 23)
1. Locate and correct all leaks
(see Checking Gas Connec
tions, page 15)
2. Replace control valve
1. Take apart gas tub in g and
remove foreign matter
2. Locate and correct all leaks
(see Checking Gas Connec
tions, page 15)
-
-
-
112882-01D 27
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WIRING DIAGRAM
Receiver
Black
On
Off
Remote
Red
Red
White
Thermopile
Gas Control
TPTH TH
TPTH
TP
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
You may feel your gas pressure is too low. 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
Heating Productsʼ Technical Service Department at
1-866-672-6040. When calling, please have your
model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ techni
cal 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 canʼt supply original replacement part(s),
call DESA Heating Productsʼ Technical Service
Department at 1-866-672-6040.
When calling DESA Heating Products, 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 part to the
factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If they
canʼt supply original replacement part(s) call
DESA Heating Products at 1-866-672-6040 for
referral information.
When calling DESA Heating Products, have
ready
• model number of your heater
• the replacement part number
28
SPECIFICATIONS
VGL18PRA VGL18NRA
VGL24PRA VGL24NRA
VGL30PRA VGL30NRA
Btu (Variable) 21,000/30,000 21,000/30,000
Type Gas Propane/LP Natural Gas
Ignition Electronic Electronic
Manifold Pressure 8.0" W.C. 3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum 14" 10.5"
Minimum* 11" 5"
* For the purpose of input adjustment
www.desatech.com
112882-01D
ACCESSORIES
Purchase these fireplace accessories from your local dealer. If they can not supply these accessories
call DESA Heating Productsʼ Sales Department at
1-866-672-6040 for referral information. You can
also write to the address listed on the back page
of this manual.
EQUIPMENT SHUTOFF VALVE
GA5010
For all models. Equipment shutoff valve with 1/8"
NPT tap. Fits 1/2" NPT pipe.
FIREPLACE HOOD
Black - GA6050
Brass - GA6052
Antique Brass - GA6053
For all models. Helps deflect heat away from
mantel or wall above fireplace.
LAVA ROCK - GA6060
(Not Shown)
For all models. Order when additional rock is
desired (1.8 lb. bag).
DAMPER CLAMP - GA6080
(Not Shown)
For all models. Permanently opens chimney flue
damper for vented operation. Can be used only
with non-thermostat accessories.
CLEANING KIT - CCK
(Not Shown)
For all models. Your vent-free gas appliance re
quires regular cleaning and maintenance to prevent
performance problems. This kit gives you the tools
and instructions to make it easy to clean all critical
areas of your appliance.
INFORMATION VIDEO - 108917-01
For all models. A care and maintenance video is available by calling 1-866-672-6040. You may also email
your request to productsupport@desaint.com.
RECEIVER AND HAND-HELD
THERMOSTAT REMOTE CONTROL
KIT - GHRCTB SERIES
For all models. Allows the gas log heater to be
operated in a manually or thermostatically-con
trolled mode. You can turn the gas log heater on
and off without ever leaving the comfort of your
easy chair.
RECEIVER AND HAND-HELD
REMOTE CONTROL KIT - GHRCB
SERIES
For all models. Allows the gas log heater to be
turned on and off by using a hand-held remote
control.
-
-
112882-01D 29
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ILLUSTRATED PARTS BREAKDOWN
15
27
19
16
23
12
5
20
21
6
3
7
9
14
8
11
10
19
17
1
22
31
23
10
4
22
2
18
13
24
32
19
22
19
23
28
25
30
29
26
MODELS
VGL18PRA, VGL18NRA
VGL24PRA, VGL24NRA
VGL30PRA, VGL30NRA
30
www.desatech.com
112882-01D
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions
listed under Replacement Parts on page 28 of this manual.
PART NUMBER
KEY VGL18PRA VGL24PRA VGL30PRA
NO. VGL18NRA VGL24NRA VGL30NRA DESCRIPTION QTY.
1 ** ** ** Base Assembly 1
2 114010-02 114010-02 114010-02 Rear Burner, NG 1
114010-01 114010-01 114010-01 Rear Burner, Propane/LP
3 111646-01 111646-01 111646-01 Ember Bed Burner 1
4 103779-01 103779-01 103779-01 ODS Pilot, NG 1
103778-01 103778-01 103778-01 ODS Pilot, Propane/LP 1
5 103781-01 103781-01 103781-01 Gas Valve, NG 1
103781-02 103781-02 103781-02 Gas Valve, Propane/LP 1
6 111644-01 111644-01 111644-01 Outlet Tube 1
7 111765-01 111765-01 111765-01 Front Burner Tube 1
8 099918-02 099918-02 099918-02 Regulator (Pilot) NG Only 1
9 099918-03 099918-03 099918-03 Regulator (Burner) NG 1
099918-02 099918-02 099918-02
10 099387-14 099387-14 099387-14 Pilot Tube NG 1
099387-09 099387-09 099387-09 Pilot Tube Propane/LP 1
11 099387-15 099387-15 099387-15 Pilot Tube (Regulator to
Valve) NG Only 1
12 098264-02 098264-02 098264-02 Male Connector 1
13 101004-22 101004-22 101004-22 Injector (Rear) NG 1
101004-12 101004-12 101004-12 Injector (Rear) Propane/LP 1
14 101004-12 101004-12 101004-12 Injector (Front) NG 1
101004-13 101004-13 101004-13 Injector (Front) Propane/LP 1
15 112881-01 112881-01 112881-01 Pilot Bracket Propane/LP 1
112881-02 112881-02 112881-02 Pilot Bracket NG 1
16 111727-01 111727-01 111727-01 Remote Valve Bracket 1
17 111435-01 111435-01 111435-01 Electronic Ignitor 1
18 098271-10 098271-10 098271-10 Ignitor Cable 1
19 108631-01 108631-01 108631-01 Screw, PPH B 10-16 x 1.00 4
20 103784-01 103784-01 103784-01 Extension Knob (Pilot) 1
21 103784-02 103784-02 103784-02 Extension Knob (Hi-Lo) 1
22 M11084-26 M11084-26 M11084-26 Screw, HWH AB 10-16 x .38 9
23 M12461-26 M12461-26 M12461-26
24 108631-01 108631-01 108631-01 Screw, PPH B 10-16 x 1.00 1
25 112908-01 112908-07 112908-13 Rear Log 1
26 112908-02 112908-08 112908-14 Right Bottom Log 1
27 112908-04 112908-10 112908-16 Left Bottom Log 1
28 112908-06 112908-12 112908-18 Right Crossover Log 1
29 112908-05 112908-11 112908-17 Left Top Log 1
30 112908-03 112908-09 112908-15 Right Top Log 1
31 113129-01 113129-01 113129-01 1/2" Pipe Strap 1
32 107110-01 107110-01 107110-01 Spacer, .25 x .50 1
PARTS AVAILABLE — NOT SHOWN
111711-01 111711-01 111711-01 Remote Sensor Bracket 1
098304-01 098304-01 098304-01 Screw, PPH AB 10-16 x .38 2
101137-02 101137-02 101137-02 Hardware Kit 1
GA6060 GA6060 GA6060 Lava Rock 1
111780-01 111780-01 111780-01 Rockwool Embers 1
101480-12 101480-12 101480-12 Jumper Wire 1
** Not a field replaceable part.
112882-01D 31
www.desatech.com
Regulator (Burner) Propane/LP
Screw, Hex SLT WSR 10-32 x .38
1
4
112882 01
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
VENT-FREE GAS LOG HEATERS
DESA Heating Products warrants this product to be free from defects in materials and components for four (4)
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 Heat
ing Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this
product and/or DESA Heating Products 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, INCLUD
ING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR
(4) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESA HEATING
PRODUCTSʼ LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND
DESA HEATING PRODUCTS 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:
-
-
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
NOT A UPC
112882-01
Rev. D
08/04
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