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 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 7 of this manual.
WARNING: For use only with a listed decorative type
unvented room heater. Do not build a wood fire.
This firebox has been tested and approved by CSA International under Z21.91-2001 for use with approved ANSI
Z21.11.2 decorative type unvented room heater.
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 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
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
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 f o r e tr y i n g to assemb l e ,
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 Monoxid e Poiso nin g: 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 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 warnings.
Keep this manual for reference. It is your guide to
safe and proper operation of this heater.
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Fireplace front and screen be
come very hot when running fire
place. Keep children and adults
away from hot surfaces to avoid
burns or clothing ignition. Fireplace will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.
Carefully supervise young children when they are in the room
with fireplace. When using the
optional hand-held remote ac
cessory, keep selector switch
in the OFF position to prevent
children from turning on burners
with remote.
-
-
-
WARNING: Any change to
this heater or its controls can
be dangerous.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not ap
proved for use with this heater.
113192-01B
www.desatech.com
You must operate this fireplace
with the fireplace screen and
hood in place. Make sure fireplace screen and hood are in
place before running heater.
-
Keep the appliance area clear
and free from combustible materials, gasoline and other flammable vapors and liquids.
3
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) inside any structure. Locate propane/LP supply
tank(s) outdoors (propane/LP units only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use
any phone in your building
• immediately call your gas supplier from a
neighborʼs phone. Follow the gas supplierʼs
instructions
• if you cannot reach your gas supplier, call
the fire department
4. This fireplace shall not be installed in a bed
room or bathroom.
5. Do not use this fireplace as a wood-burning
fireplace. Use only the logs provided with the
fireplace.
6. Do not add extra logs or ornaments such as
pine cones, vermiculite or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of fireplace.
7. To prevent the creation of soot, follow the
instructions in Cleaning and maintenance
page 25.
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 fireplace needs fresh air ventilation to run
properly. This fireplace has an Oxygen Deple
tion Sensing (ODS) safety shutoff system. The
ODS shuts down the fireplace if enough fresh
air is not available. See Air for Combustion and Ventilation, page 7. If fireplace keeps
shutting off, see Troubleshooting, page 27.
10. Do not run fireplace
• where flammable liquids or vapors are used
or stored
• under dusty conditions
11. Do not use this fireplace to cook food or burn
paper or other objects.
12. Do not use fireplace if any part has been
exposed to or under water. Immediately call
a qualified service technician to inspect the
fireplace and to replace any part of the control
system and any gas control which has been
under water.
13. Do not operate fireplace if any log is broken.
Do not operate fireplace if a log is chipped
(dime-sized or larger).
14. Turn fireplace off and let cool before servicing.
Only a qualified service person should service
and repair fireplace.
15. Operating fireplace above elevations of 4,500
feet could cause pilot outage.
16.
To prevent performance problems in propane/LP
units, do not use propane/LP fuel tanks of less
than 100 lbs. capacity (propane/LP units only).
17.
Provide adequate clear ances around a ir
openings.
-
LOCAL CODES
Install and use fireplace with care. Follow all local
codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
National Fire Protection Association, Inc.
,
Note: Where listed vented decorative logs are
required, thermostat operation is not permitted.
State of Massachusetts: The installation 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.
1430 Broadway
New York, NY 10018
Batterymarch Park
Quincy, MA 02269
4
www.desatech.com
113192-01B
PRODUCT
IDENTIFICATION
Log Set
Piezo
Ignitor
Optional
Remote Control
Figure 1 - Log Base Assembly
Top Louver
Assembly
Fireplace
Hood
Screen
Assembly
Figure 2 - Fireplace (VSGF36NR Shown)
Front
Burner
(VSGF36NR Shown)
Bottom Louver
Assembly
Rear
Burner
Base
Assembly
Top Outer
Casing
UNPACKING
CAUTION: Do not remove
the data plates attached to the
heater base assembly. The data
plates contain
1. With utility knife, cut the carton all the way
around above the staples on the bottom tray.
Lift the carton off the heater. Remove packing.
Note: The hood is located on top of fireplace
in a carton.
Locate one screw above top left corner of the
2.
fireplace screen. Remove and discard screw. Lift
fireplace screen up and pull out to remove.
3. Remove protective packaging applied to logs,
log base assembly and fireplace.
4. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought fireplace.
PRODUCT FEATURES
OPERATION
This vent-free fireplace is clean burning. It requires
no outside venting. There is no heat loss out a vent
or up a chimney. Heat is generated by both realistic
flames and glowing embers. When used without the
blower, the fireplace requires no electricity making
it ideal for emergency backup heat.
SAFETY DEVICE
This fireplace 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 system shuts off the fireplace
if there is not enough fresh air.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system
requires no matches, batteries or other sources to
light fireplace.
OPTIONAL REMOTE CONTROL
ACCESSORY
There are four optional remote controls (not
included) that can be purchased separately for
this log heater:
• wall switch
• wall thermostat
• hand-held ON/OFF remote
• hand-held thermostat remote
See Accessories, page 31.
113192-01B
www.desatech.com
5
LOCATING FIREBOX
PLANNING
Plan where you will install the firebox. This will save time and money later when you install the firebox.
Before installation, consider the following:
1. Where the firebox will be located. Allow for wall and ceiling clearances (see Installation Clearances, page 10).
2. Everything needed to complete installation.
3. These models CANNOT be installed in a bedroom unless the maximum Btu rating of the installed
vent-free log set is less than 10,000 Btu/hr.
4. Proper air for combustion and ventilation (page 7).
PRODUCT SPECIFICATIONS
Left Side View
Firebox Top View
-
Right Side View
Front View
Figure 3 - Firebox Dimensions
6
www.desatech.com
113192-01B
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This firebox 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, fireboxes, 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 7 through 9 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
less with openings gasketed or sealed
and
b. weather stripping has been added on
openable windows and doors and
c. caulking or sealants are applied to
areas such as joints around window
and door frames, between sole plates
and floors, between wall-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.
If your home meets all of the three criteria
above, you must provide additional fresh
air. See Ventilation Air From Outdoors
page 9.
If your home does not meet all of the three
criteria above, proceed to Determining
-
Fresh-Air Flow for Heater Location, page 8.
Confined 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
3
(4.8 m
per kw) of the aggregate input rating of
all appliances installed in that space. Rooms com
municating directly with the space in which the
appliances are installed*, through openings not
furnished with doors, are considered a part of the
unconfined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
-11
kg per pa-sec-m2) or
3
per kw) of the aggregate input
-
,
-
113192-01B
www.desatech.com
7
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 door
less 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: Space size 22 ft. (length) x 18 ft.
(width) x 8 ft. (ceiling height) = 3168 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: 3168 cu. ft. (volume of space) x 20 =
63,360 (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 = ________
40,000
__________ Btu/Hr
39,000
79,000
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
_________
_________
Example: 63,360 Btu/Hr (maximum the space
79,000 Btu/Hr (actual amount of
The space in the above example is a confined space
because the actual Btu/Hr used is more than the maxi
mum Btu/Hr the space can support. You must provide
additional fresh air. Your options are as follows:
-
A. Rework worksheet, adding the space of an adjoin
ing room. If the extra space provides an unconfined
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation Air From Inside Building, page 9.
B. Vent room directly to the outdoors. See Ventila
tion Air From Outdoors, page 9.
C. Install a lower Btu/Hr fireplace, if lower Btu/Hr
size makes room unconfined.
Btu/Hr (maximum the space can support)
Btu/Hr (actual amount of Btu/Hr used)
can support)
Btu/Hr used)
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.
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.
-
-
-
-
8
www.desatech.com
113192-01B
AIR FOR COMBUSTION
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"
Outlet
Air
Ve
ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ve
ntilated
Crawl Space
To
Crawl
Space
To Attic
AND VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un
confined space. When ventilating to an adjoining
unconfined space, you must provide two perma-
nent openings: one within 12" of the ceiling and
one within 12" of the floor on the wall connecting
the two spaces (see options 1 and 2, Figure 4). You
can also remove door into adjoining room (see
option 3, Figure 3). Follow the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for
Combustion and Ventilation for required size of
ventilation grills or ducts.
-
Figure 5 - 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.
-
Figure 4 - Ventilation Air from Inside
Building
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12"
of the floor. Connect these items directly to the
outdoors or spaces open to the outdoors. These
spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat-
controlled power vent. Heated air entering the attic
will activate the power vent.
113192-01B
www.desatech.com
WARNING: A qualified service
person must install fireplace.
Follow all local codes.
WARNING: Never install the
fireplace
• in a bedroom or bathroom
• 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
9
INSTALLATION
Continued
CAUTION: This fireplace creates warm air currents. These
currents move heat to wall sur
faces next to fireplace. Installing
fireplace next to vinyl or cloth
wall coverings or operating
heater where impurities (such
as, but not limited, to tobacco
smoke, aromatic candles, cleaning fluids, oil or kerosene lamps,
etc.) in the air exist, may discolor
walls or cause odors.
Note: Your fireplace is designed to be used in zero
clearance installations. Wall or framing material
can be placed directly against any exterior surface
on the rear, sides or top of your fireplace, except
where standoff spacers are integrally attached. If
standoff spacers are attached to your fireplace,
these spacers can be placed directly against wall
or framing materials.
Use the dimensions shown for rough openings to
create the easiest installation. See Built-In Fireplace Installation, page 11.
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is beneficial, installing fire
place in rooms without enough ventilation air may
cause mildew to form from too much moisture. See
Air for Combustion and Ventilation
IMPORTANT: Make sure the fireplace is level.
If fireplace is not level, log set will not work
properly.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP)
for your fireplace. If your gas supply is not correct, do not install fireplace. Call dealer where you
bought fireplace for proper type fireplace.
, page 7.
-
INSTALLATION CLEARANCES
WARNIN G: Maintain the
minimum clearances. If you
can, provide greater clearances
from floor, ceiling and adjoining
wall.
Carefully follow the instructions below. This will
ensure safe installation.
Minimum Wall and Ceiling Clearances (see
Figure 6)
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 6.
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 cabinet (see Figure 6).
B. Clearances from the top of the firebox open
ing to the ceiling should not be less than 42
inches.
C. When the firebox is installed on carpeting or
other combustible material, other than wood
flooring, the firebox should be installed on a
metal or wood panel extending the full width
-
and depth of the enclosure.
D. Clearances from the bottom of firebox to the
floor is 0 inches.
These fireboxes can be installed as freestanding
units against a wall with the approved, optional
cabinet mantels (see
built-in unit. The clearances are the same for either
installation method.
Accessories, page 31) or as a
CAUTION: Do not install the
firebox directly on carpet or
vinyl.
-
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
is not permitted.
10
www.desatech.com
Example
*
*Minimum 16 inches from Side Wall
Figure 6 - Minimum Clearance for
Combustible to Wall
113192-01B
INSTALLATION
Supplied Firebox
Hood Must Be
Used at All Times
Wire-mesh
Screen
Firebox
Noncombustible
Material May
Project Off this
Surface above
the Firebox Hood
Mantel Shelf
Note: Any portion of the
mantel shelf must NOT
extend beyond this profile.
12"
16"
20"
1
1
/
2
"
6
3
/
4
"
12"
Note: All vertical
measurements are
from top of fireplace
hood opening to
bottom of mantel shelf.
These minimum
clearances replace any
other recommended
clearances supplied with
your ANSI Z21.11.2
approved gas logs.
Wa
ll board or facing
material (above
firebox) may be of
combustible material,
including decorative
mantel ornaments or
other similar projections off of the facing
material.
Framing
Material
Continued
Mantel Clearances for Built-In
Installation
If placing custom mantel above built-in firebox,
you must meet the minimum allowable clearance
between mantel shelf and top of firebox opening
shown in Figure 7. These are the minimum allowable
mantel clearances for a safe installation. Use larger
clearances wherever possible to minimize the heating of objects and materials placed on the mantel.
CAUTION: Do not allow the
vent-free gas log heater to touch
or extend beyond the fireplace
screen.
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:
• raise the mantel to an accept
-
able height
• remove the mantel
BUILT-IN FIREBOX INSTALLATION
Built-in installation of this firebox involves installing firebox into a framed-in enclosure. This makes
the front of firebox flush with wall. Optional brass
trim accessories are available (see Accessories,
page 31). The brass trim will extend past sides of
firebox approximately 1/2 inch. This will cover
the rough edges of the wall opening. If installing
a mantel above the firebox, you must follow the
clearances shown in Figure 6, page 10. Follow
the instructions below to install the firebox in
this manner.
113192-01B
Figure 7 - Minimum Mantel Clearances for Built-In Installation
www.desatech.com
11
INSTALLATION
Depth
(Minimum)
Widt
h
(Inside to Inside)
Height
37"
411/2"
5
2
11
/
3
2
"
74"
TOP
VIEW
FOR 36"MODELS
Continued
1. Frame in rough opening. The firebox framing
should be constructed of 2 x 4 lumber or heavier.
Use dimensions in Table 1 and rough opening
layout in Figure 8. Adjust framing so that firebox
flushes with finished wall surface. If installing
in a corner, use dimensions in Figures 8 and 9
for rough opening.
2.
Install gas piping to firebox location. See Installing
Gas Piping to Fireplace Location on page 13 and
Connecting Fireplace to Gas Supply, page 15.
IMPORTANT: If installing blower accessory
(circulating models with louvers only), see Hard-
Wiring Firebox
3. Carefully set firebox in front of rough open
ing with back of firebox inside wall opening.
IMPORTANT: If installing a perimeter trim
kit, see instructions included with trim acces
sory. You must install shoulder screws from
trim kit now.
4. Carefully insert firebox into rough opening.
5. Attach firebox to wall studs using nails or
wood screws through holes in nailing flange
(see Figure 10).
6. If using an optional perimeter trim kit, install
the trim after final finishing and/or painting
of wall. See instructions included with trim
accessory for attaching trim.
7. Install and properly test gas log heater. Fol
low installation instructions included with
the vent-free gas log heater that is being
installed.
IMPORTANT: When finishing your firebox,
combustible materials such as wall board, gypsum
board, sheet rock, drywall, plywood, etc. may be
butted up next to the sides and top of the firebox.
Combustible materials should never overlap the
firebox front facing.
, page 18.
WARNING: Use only noncombustible mortar or adhesives
when overlapping the front facing with noncombustible facing
material.
Rough Opening Dimensions for
Built-in Installation
Front Width
(Inside to Depth
Model Inside) Height (Minimum)
36" 41
-
-
Figure 8 - Rough Opening for Installing
-
Figure 9 - Rough Opening for Installing
Nails or
Wood
Screws
1
/2" 40 1/2" 20 3/4"
in Wall
in Corner Wall
WARNING: Do not allow any
combustible materials to overlap
the firebox front facing.
IMPORTANT: Noncombustible materials such as
brick, tile, etc. may overlap the front facing, but
should never cover any necessary openings like
louvered slots.
WARNING: Do not allow noncombustible materials to cover
any necessary openings like
louvered slots.
12
Figure 10 - Attaching Firebox to Wall
www.desatech.com
Nailing
Flange
Studs
113192-01B
INSTALLATION
Continued
INSTALLING FIREBOX USING
OPTIONAL ACCESSORY MANTELS
WARNING: A qualified service
person must install firebox. Follow all local codes.
This firebox may be installed using a cabinet
mantel accessory against a wall in your home.
The firebox and cabinet mantel can be installed
directly on the floor. A trim kit is included with
the mantel accessories.
1. Assemble cabinet mantel accessory and the
trim kit. Assembly instructions are included
with each accessory.
2. Install gas piping to firebox location. See
Installing Gas Piping to Fireplace Location
You may have to cut an access hole in the floor
or wall to run gas line to firebox. Make sure
to locate access hole so cabinet mantel will
cover it when installed (see Figure 11).
3. Place cabinet mantel on floor in desired loca
tion. Make sure mantel is flush against wall.
4. Install the trim kit furnished with mantel. See
instruction sheet included with the mantel.
5. Carefully insert firebox into cabinet mantel. Be
careful not to scratch firebox, cabinet mantel,
flooring, etc. when installing (see Figure 12).
6. Install and properly test gas log heater. Follow installation instructions included with
the vent-free gas log heater that is being
installed.
.
Figure 12 - Inserting Firebox Into
Cabinet Mantel (Model May Vary From
-
INSTALLING GAS PIPING TO
Illustration)
FIREPLACE LOCATION
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
Cabinet
Mantel
Gas Line Access Hole
(Either Side of Firebox)
Figure 11 - Installing Cabinet Mantel
113192-01B
Gas Piping
WARNING: A qualified service
person must connect fireplace
to gas supply. Follow all local
codes.
CAUTION: Never connect propane/LP fireplace directly to the
propane/LP supply. This fireplace
requires an external regulator
(not supplied). Install the external
regulator between the fireplace
and propane/LP supply.
www.desatech.com
13
INSTALLATION
Continued
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
Installation Items Needed
Before installing fireplace, make sure you have
the items listed below.
• external regulator for propane/LP unit only
(supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap (optional)
• tee joint
• pipe wrench
• approved flexible gas line with gas connector
(if allowed by local codes) (not provided)
* 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
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.
Propane/LP
Supply Tank
Figure 13 - External Regulator With Vent
Accessories, page 31.
External
Regulator
Vent
Pointing
Down
Pointing Down
CAUTION: Use only new,
black iron or steel pipe. Inter
nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of
1/2" diameter or greater to allow
proper gas volume to fireplace.
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 fireplace (see
Figure 14).
IMPORTANT: Install equipment shutoff valve
in an accessible location. The equipment shutoff
valve is for turning on or shutting off the gas to
the appliance.
Check your building codes for any special re
quirements for locating equipment shutoff valve
to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could result
in clogged fireplace valves. Never use sealant on
flare threads.
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Natural Gas
-
3" Minimum
Cap Pipe Tee
Sediment
Nipple Joint
Trap
Figure 14 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 31.
** Minimum inlet pressure for purpose of input
adjustment.
From Gas Meter
(5" W.C.** to 10.5"
W.C. Pressure)
Propane/LP
From External
Regulator
(11" W.C.** to 14"
W.C. Pressure)
-
-
14
www.desatech.com
113192-01B
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, page 14. Locate
sediment trap where it is within reach for cleaning. Install in piping system between fuel supply
and fireplace. Locate sediment trap where trapped
matter is not likely to freeze. A sediment trap traps
moisture and contaminants. This keeps them from
going into fireplace gas controls. If sediment trap
is not installed or is installed wrong, fireplace may
not run properly.
CONNECTING FIREPLACE TO GAS
SUPPLY
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not pro
vided)
1. Remove fireplace screen. Remove one screw
that holds fireplace screen in place for ship
ping. This screw is located near top left side
of screen. Discard screw. Lift fireplace screen
up and pull out to remove.
2. Remove screws that attach log base assembly
to fireplace (see Figure 15). Carefully lift up
log base assembly and remove from fireplace
(see Figure 15).
Note: If adding the G8007 series brick liner accessory, install it now. Follow instructions in G8007
accessory kit.
CAUTION: Do not pick up
log base assembly by burner.
This could damage burner. Only
handle base by grates.
3. Route gas line (provided by installer) from
equipment shutoff valve to fireplace. Route
flexible gas supply line through one of the
access holes.
NOTICE: Most building codes
do not permit concealed gas
connections. A flexible gas line
is provided to allow accessibility
from the fireplace (see Figure 16).
The flexible gas supply line connection to the equipment shutoff
valve should be accessible.
4. Attach the flexible gas line to gas supply (see
-
Figure 16). Check tightness of flexible gas
line attached to gas regulator of fireplace (see
Figure 16).
-
5. Check all gas connections for leaks. See
Checking Gas Connections, page 16.
6. Replace log base assembly back into fireplace.
Feed flexible gas line into fireplace base area
while replacing log base assembly. Make sure
the entire flexible gas line is in fireplace base
area. Reattach log base assembly to fireplace
with screws removed in step 2.
To Fireplace
Gas Regulator
Flexible Gas Line
from Fireplace
Gas Regulator
Equipment
Shutoff Valve
Provided by
Installer
Propane/LP
To External
Regulator
Figure 15 - Removing Log Base
Assembly From Fireplace
113192-01B
Figure 16 - Attaching Flexible Gas Lines
www.desatech.com
Natural Gas
To Gas Meter
Together
15
INSTALLATION
Continued
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.
Ap ply a no ncorrosi v e le ak
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
fireplace. See guidelines under
Connecting Fireplace to Gas
Supply, page 15.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1.
Disconnect fireplace with its main gas valve
(control valve) and equipment shutoff valve from
gas supply piping system. Pressures in excess of
1/2 psig will damage fireplace 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 all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6.
Reconnect fireplace 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 17).
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.
16
www.desatech.com
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/LP
supply to equipment shutoff valve for propane/
LP (see Figures 18 and 19). Apply noncorrosive leak detection fluid to all joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 17).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP
supply tank valve.
3. Make sure control knob of fireplace is in the
OFF position.
4. Check all joints from equipment shutoff valve
to gas control valve (see Figures 18 or 19).
Apply noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
Light fireplace (see Operating Fireplace, page 19.
6.
Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to Appliance, pages 20 or 22, depending on your
model).
Equipment
Shutoff Valve
Figure 17 - Equipment Shutoff Valve
Gas Control Valve
Figure 18 - Checking Gas Joints for
Natural Gas
Equipment Shutoff Valve
Gas Control Valve
Figure 19 - Checking Gas Joints for
Propane/LP Gas
Open
Closed
Equipment
Shutoff
Valve
Gas Meter
Propane/LP
Supply Tank
113192-01B
INSTALLATION
Continued
INSTALLING LOGS (MODELS
VSGF36NT, VSGF36PT, VSGF36NR
AND VSGF36PR)
WARNING: You must operate
this fireplace with the fireplace
screen in place. Make sure fire
place screen is in place before
running fireplace.
-
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: Do not remove
the data plates attached to the
heater base assembly. The data
plates contain important safety
and warranty information.
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use logs
supplied with heater.
1. Place front log on top of the grate. Make sure
the notches in the bottom of the log fit over
the grate prongs (see Figure 20). Push back
of logs flush with metal grate bars.
2. Rest middle log behind metal posts on grate as
sembly. Make sure the grooves in the bottom of
the log fit over the grate. Bring the log forward
next to the metal posts (see Figure 21).
3. Slide the grooves in the back of the rear log
against the rear grate prongs. Make sure the log
fits securely over the prongs (see Figure 22).
Make sure log is completely vertical and not
leaning in toward burner where the flame will
touch the log.
Groove
Groove in
Back of Log
-
Middle Log
Metal Post
Figure 21 - Installing Middle Log
Rear Log
Grate
Prong
Figure 22 - Installing Rear Log
Groove
Grate
Groove
in Back
of Log
Grate
Prong
Front Log
Notch
Grate
Prongs
Figure 20 - Installing Front Log
113192-01B
Metal
Grate
Bars
www.desatech.com
17
INSTALLATION
Continued
HARD-WIRING FIREBOX
NOTICE: A qualified electrician
must connect electrical wiring to
duplex outlet for built-in installation. Follow all local codes.
In absence of local codes fol
low The National Electric Code ANSI/NFPA 70.
The “Handy Box” with duplex outlet is provided in
the firebox located in the lower right base area.
2. Route electrical cable through strain relief and
handy box (see Figure 23). Tighten screws on
strain relief.
3. Connect electrical cable to duplex outlet.
Match wire colors to those on duplex outlet.
Be sure to connect the ground wire.
4. Place duplex outlet back into handy box and
secure with screws. Replace outlet cover.
Duplex Box/
Handy Box
-
INSTALLING FIREPLACE HOOD
AND SCREEN
1. Loosen screws inside top edge of firebox.
Slide notches in hood over screws and tighten
screws (see Figure 24).
2. Install fireplace screen by slipping notches
of fireplace screen over screws on front of
fireplace (see Figure 25).
Screw
Hood
Figure 24 - Hood Placement
(Model May Vary From Illustration)
Figure 23 - Hard-Wiring Firebox
18
Screws
Strain Relief
www.desatech.com
Screw
Screen
Figure 25 - Screen Placement
(Model May Vary From Illustration)
113192-01B
OPERATING FIREPLACE
THERMOSTAT MODELS
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result
causing property damage, per
sonal injury or loss of life.
A. This appliance has a pilot which must be
lighted by hand. When lighting the pilot,
follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not
use any phone in your building.
• Immediately call your gas supplier from
a 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 tech
nician or gas supplier. Force or attempted
repair may result in a fire or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualified service technician to inspect the
appliance and to replace any part of the
control system and any gas control which
has been under water.
-
LIGHTING
INSTRUCTIONS
WARNING: You must operate
this fireplace with the fireplace
screen in place. Make sure fire
place screen is installed before
running fireplace.
NOTICE: During initial operation
of new fireplace, burning logs
will give off a paper-burning
smell. Orange flame will also be
present. Open window to vent
smell. Operate fireplace on HI
position to burn off odor. This
will only last a few hours.
1.
STOP! Read the safety information, column 1.
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise
OFF position (see Figure 26).
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.
5. Turn control knob counterclockwise
to the PILOT position. Press in control
knob for five (5) seconds (see Figure 26).
Note: If running fireplace for first time,
there will be air in gas line. You may need
to press in control knob for 30 seconds or
longer. This will allow air to bleed from the
gas system.
6. Continue pressing control knob in. Press
and release ignitor button. This will light
pilot. The pilot is attached to the front
burner. If needed, keep pressing ignitor
button until pilot lights.
-
to the
113192-01B
Figure 26 - Control Knob and Ignitor
www.desatech.com
Ignitor Button
Control Knob
Button Location
19
OPERATING FIREPLACE
Continued
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.
Note: If pilot goes out, repeat steps 3
through 7. This fireplace has a safety interlock system. Wait one (1) minute for system
to reset before lighting pilot again.
• If control knob does not pop out when
released, contact a qualified service person
or gas supplier for repairs.
8. Turn control knob counterclockwise
to desired heating level. The burners should
light. Set control knob to any heat level
between HI and LO.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
Ignitor Electrode
Pilot Burner
THERMOSTAT CONTROL
OPERATION
You can set the thermostat control knob to any
comfort level between HI and LO. The thermostat will gradually modulate the heat output
and flame height from higher to lower settings
or pilot, in order to maintain the comfort level
you select. The ideal comfort setting will vary
by household depending upon the amount of
space to be heated, the output of the central
heating system, etc.
Note: Selecting the HI setting will cause the
burner to remain on without modulating down
in most cases.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting
Instructions, 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 8 under
Lighting Instructions, column 1.
REMOTE CONTROL MODELS
FOR YOUR SAFETY
READ BEFORE LIGHTING
Figure 27 - Pilot
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Fireplace
Turn control knob clockwise
position.
Shutting Off Burners Only (pilot stays lit)
Turn control knob clockwise to the
PILOT position.
20
to the OFF
www.desatech.com
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.
113192-01B
OPERATING FIREPLACE
O
F
F
P
I
L
O
T
L
O
I
H
O
N
Continued
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.
LIGHTING
INSTRUCTIONS
WARNING: You must operate
this fireplace with the fireplace
screen in place. Make sure fireplace screen is installed before
running fireplace.
NOTICE: During initial operation
of new fireplace, burning logs
will give off a paper-burning
smell. Open damper or window
to vent smell. This will only last
a few hours.
1. STOP! Read the safety information, starting on page 20, column 2.
2. Make sure equipment shutoff valve is fully
open.
3. Set selector switch in OFF position.
WARNING: Burners will come
on automatically within one
minute when the selector switch
is in the ON position after the
pilot is lit.
4. Press in and turn control knob clockwise
to the OFF position.
5. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP! Follow “B” in the
safety information, page 20. If you donʼt
smell gas, go to the next step.
6. Press in and turn control knob counterclockwise
to the PILOT position.
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.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
7. With control knob pressed in, press and
release ignitor button. This will light pilot.
The pilot is attached to the front burner. If
needed, keep pressing ignitor button until
pilot lights.
Note: If pilot does not stay lit, contact a
qualified service person or gas supplier for
repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure, page 22.
8. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob.
• If control knob does not pop out when
released, contact a qualified service person
or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4
through 8.
9. Slightly push in and turn control knob coun
terclockwise
10. Wait one minute and switch selector switch
to the ON position to light burners.
11. Set flame adjustment knob to any level
between HI and LO.
Ignitor Button
Selector Switch
Figure 28 - Control Knob and Ignitor
Button Location (Shown as Supplied, No
Control Options)
to the ON position.
Flame Adjustment
Knob
Control Knob
-
-
113192-01B
www.desatech.com
21
OPERATING FIREPLACE
Continued
BLOWER
OPERATION
WARNING: Make sure the selector switch is in the OFF position
when you are away from home for
long periods of time. Heater will
come on automatically with selector switch in the ON position.
Pilot
Burner
Figure 29 - Pilot
Ignitor
Electrode
(Natural)
Pilot
Burner
Figure 30 - Pilot
(Propane/LP)
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:
• Turn control knob clockwise
PILOT position.
• Use remote control manual OFF button.
• Set selector switch in the OFF position.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 6 under Lighting
Instructions, page 21.
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 steps 9 through
11 under
Lighting Instructions, page 21.
Ignitor
Electrode
to the
to the
WARNING: This fireplace has
a three-prong, grounded electrical
plug. This plug helps protect you
against electrical shock. Only con
nect plug to a properly grounded,
three-prong receptacle. Do not cut
or remove the grounding prong
from this plug.
Locate the blower switch by opening lower
louver on fireplace. Blower switch is located at
lower left inside louver door.
This thermostat-controlled blower has a vari
able speed control with an ON/OFF switch. The
blower will start when the thermostat senses a
sufficient increase in firebox temperature.
Note: It is safe to operate fireplace with blower
turned off. However, the blower helps distribute
heated air from the fireplace.
Note: Periodically check the louvers of the
firebox and remove any dust, dirt or other
obstructions.
OPTIONAL HAND-HELD
REMOTE OPERATION
Note: All remote control accessories must be
purchased separately (see Accessories, pages
31). 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 21.
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 31, page 23).
Note: 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.
-
-
-
22
www.desatech.com
113192-01B
OPERATING FIREPLACE
O
F
F
P
I
L
O
T
L
O
I
H
ON
OFF
REMOTE
O
N
Continued
Flame
Adjustment Knob
Selector Switch in Remote
Position (Optional HandHeld Remote Control)
Figure 31 - Setting the Selector Switch,
Control Knob and Flame Adjustment
Knob for Hand-Held 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 32).
TO LOCK
press both buttons on hand-held
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
press both buttons together
on hand-held remote control until the light
stops flashing. The hand-held remote is now
unlocked.
Figure 32 - On/Off Hand-Held Remote
Control Unit GHRCB
THERMOSTAT SERIES (MODEL
GHRCTB)
The hand-held remote can be operated using
either the manual mode (MANU) or thermo
static mode (AUTO) (see Figure 33). To select
Fahrenheit/Centigrade mode display, carefully
press the ˚C/˚F mode button with the end of a
paper clip or similar blunt object.
Manual Mode
1.
Press the POWER and LOCK buttons together to turn on the hand-held remote control.
2. Press the MANU button to turn on the
fireplace.
113192-01B
Control Knob
in On Position
Control Button Turns
Burners On and Off
3. Press the POWER and LOCK buttons
together to turn off the fireplace.
Digital
Display
Shows
Temperature
and Settings
Turns
Burners On
or Off
Decreases
Room
Temperature
in AUTO
Mode
Figure 33 - Thermostat Hand-Held
Remote Control Unit (GHRCTB)
Auto (Thermostatic) Mode
1. Press the POWER and LOCK buttons
together to turn on the hand-held remote
control.
2. Press AUTO button to select this mode.
3. Set the desired room temperature by press
ing the TEMP + or - buttons.
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.
www.desatech.com
Locks System to
Prevent Accidental
Ignition
Turns
Hand-Held
Remote On
or Off and
Allows You
to Choose
the Manual
Setting
Selects Auto
Setting
Increases
Room
Temperature
in AUTO
Mode
-
23
OPERATING FIREPLACE
Continued
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 34 shows a correct pilot flame pattern.
Figure 35 shows an incorrect pilot flame pattern.
The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to
cool. When the thermocouple cools, the fireplace
will shut down.
If pilot flame pattern is incorrect, as shown in
Figure 35
• turn fireplace off (see To Turn Off Gas to Ap
pliance, page 20 or 22, depending on your
model.)
• see Troubleshooting
Note: The correct pilot flame on natural gas units
will have a slight curve, but flame should be blue
and have no yellow or orange color.
, page 27
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 may create soot.
FRONT BURNER FLAME PATTERN
Figure 36 shows correct front burner flame pattern. Figure 37 shows incorrect front burner flame
pattern. The incorrect burner flame pattern shows
yellow tipping at top of blue flame.
If front burner flame pattern is incorrect, as
shown in Figure 37
• turn fireplace off (see To Turn Off Gas to Appliance, page 20 or 22, depending on your
model.)
• see Troubleshooting
Figure 36 - Correct Burner Flame Pattern
Yellow Tipping At Top of Blue Flame
-
, page 27
-
(Pilot May Vary From Ones Shown)
Pilot
Burner
Figure 34 - Correct
Pilot Flame Pattern
24
Thermocouple
Pilot Burner
Figure 35 - Incorrect
Pilot Flame Pattern
Figure 37 - Incorrect Burner Flame
www.desatech.com
Pattern
113192-01B
CLEANING AND
MAINTENANCE
WARNING: Turn off fireplace
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and circulating air passageways of
fireplace clean. Inspect these
areas of fireplace before each
use. Have fireplace inspected
yearly by a qualified service
person. Fireplace may need
more frequent cleaning due to
excessive lint from carpeting,
bedding material, pet hair, etc.
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 donʼt follow directions on the can,
you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burner, pilot and primary air inlet
holes on injector holder for dust and dirt (see
Figure 38).
3. Blow air through the ports/slots and holes in
the burner.
4. Check the injector holder located at the end
of the burner tube again. Remove any large
particles of dust, dirt, lint or pet hair with a
soft cloth or vacuum cleaner nozzle.
5. Blow air into the primary air holes on the
injector holder.
6. In case any large clumps of dust have now been
pushed into the burner repeat steps 3 and 4.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot 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 39). 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.
Ports/
Slots
Burner
Tube
Primary Air
Inlet Holes
Figure 38 - Injector Holder On Outlet
Burner Tube
Ports/Slots
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
-
Figure 39 - Pilot Inlet Air Hole
-
Injector
Holder
113192-01B
www.desatech.com
25
WIRING DIAGRAM
Thermopile
Note: For proper operation of optional accessories,
the wires from the thermopile to the control must
be connected exactly as shown.
SPECIFICATIONS
Models VSGF36NT and VSGF36NR
Btu (Variable) 33,000/21,500
Type Gas Natural Gas
Ignition Piezo
Pressure Manifold 3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5"
Minimum* 5"
Shipping Weight
* For input adjustment
Models VSGF36PT and VSGF36PR
Btu (Variable) 33,000/21,500
Type Gas Propane/LP
Ignition Piezo
Pressure Manifold 7.9" W.C.
Inlet Gas Pressure (in. of water)
Maximum 13"
Minimum* 11"
Shipping Weight
* For input adjustment
120 lbs.
120 lbs.
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 DESAʼs Technical Service Department at
1-866-672-6040.
When calling DESA, have ready
• your name
• your address
• model and serial numbers of your firebox
• how firebox 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 at 1-866-672-6040 for referral information.
When calling DESA, have ready
• model number of your firebox
• the replacement part number
Note: The firebox identification label (including
model number, serial number, clearances, etc.) is
located on the right front edge of the firebox.
TECHNICAL SERVICE
You may have further questions about installation,
operation or troubleshooting. If so, contact DESAʼs
Technical Service Department at 1-866-672-6040.
When calling, please have your model and serial
numbers of your firebox ready.
You can also visit DESAʼs technical services web
site at www.desatech.com.
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 for propane/
LP unit
You may feel your gas pressure is too low. If so,
contact your local gas supplier.
26
www.desatech.com
113192-01B
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. Ignit or ele ct rode not connected to ignitor cable
2. Ignitor cable pinched or wet
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode broken
7. Ignitor electrode positioned
wrong
1. Gas supply turned off or 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 li nes whe n in
stalled
5. Depleted gas supply (propane/
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. Tighten nut holding piezo ignitor
to base panel of log set. Nut is
located behind base panel
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
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 con
trol knob. Repeat igniting operation until air is removed
5. Contact local propane/LP gas
company
6. Clean ODS/pilot (see
ing and Maintenance, page
25) or replace ODS/pilot as
sembly
7. Replace gas regulator
-
Clean-
-
113192-01B
www.desatech.com
27
OBSERVED PROBLEM
ODS /pilot ligh ts but fl ame
goes out when control knob is
released
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1.
Control knob not fully pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. Pilot flame not touching ther
mocouple, which allows ther
moc ouple 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. The rmoco upl e conne ction
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
8. Safety interlock system has
been triggered
-
-
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) Cle a n OD S /pi l o t (see
Cleaning and Maintenance
page 25) or replace ODS/pilot
assembly
5. Hand tighten until snug, then
tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
8. Wait one minute for safety interlock system to reset. Repeat
ignition operation.
,
Burner does not light after
ODS/pilot is lit
Delayed ignition of one or both
burners
Burner backfiring during com
bustion
28
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Thermopile leads disconnect
ed or improperly connected
4. Burner will not come on in
remote position
5.
Wire disconnected from gas control (Remote ready models only)
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
www.desatech.com
1. Contact local natural or pro
pane/LP gas company
2. Clean burner(s) (see Cleaning and Maintenance, page 25)
or replace burner orifice(s)
-
3. Reconnect leads (see Wiring Diagram, page 26)
4. Replace battery in transmitter
and receiver
5. See Wiring Diagram, page 26
1. Contact local natural or pro
pane/LP gas company
2. Clean burner(s) (see Cleaning and Maintenance, page 25) or
replace burner orifice(s)
3.
Contact qualified service person
1. Clean burner (see Cleaning and Maintenance, page 25)
or replace burner orifice(s)
2. Replace damaged burner
3. Replace gas regulator
113192-01B
-
-
OBSERVED PROBLEM
Slight smoke or odor during
initial operation
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing
processes and logs curing
REMEDY
1. Check burner for dirt and
debris. If found, clean burner
(see Cleaning and Mainte-nance, page 25)
2. Replace gas control
3. Problem will stop after a few
hours of operation
Moisture/condensation noticed
on windows
Heater produces a whistling
noise when burners are lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Re mote doe s n ot fun cti on
(GHRCB and GHRCTB only)
Yellow flame in front burner
during burner combustion
1. Not enough combustion/ven
tilation air
1. Turning control knob to HI
position when burn er s are
cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or par tiall y clog ge d
burner orifice(s)
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Battery is not installed. Bat
tery power is low
1. Not enough air
2. Gas regulator defective
1. Refer to Air for Combustion
and Ventilation requirements
(page 7)
1. Tu rn con trol knob to LO
position and let warm up for
a minute
2. Operate burners until air is
removed from line. Have gas
line checked by local natural
or propane/LP gas company
3. Observe minimum installation
clearances (see page 10)
4. Clean burners (see Cleaning and Maintenance, page 25)
or replace burner orifice(s)
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
-
1. Replace 9-volt batteries in
receiver and remote control
1. C heck b u r ner(s) f o r di r t
and debris. If found, clean
burner(s) (see Cleaning and Maintenance, page 25)
2. Replace gas regulator
Fireplace produces a clicking/
ticking noise just after burner
is lit or shut off
113192-01B
1. Metal expanding while heating
or contracting while cooling
www.desatech.com
1.
This is common with most heaters. If noise is excessive, contact
qualified service person
29
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 fireplace where impurities in air exist may create odors. Cleaning supplies,
paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These
fumes may mix with combustion air and create odors. These odors will disappear over time.
OBSERVED PROBLEM
Fireplace produces unwanted
odors
Fireplace shuts off in use (ODS
operates)
Gas odor even when control
knob is in OFF position
Gas odor during combustion
Dark residue on logs inside
of their fireplace.
removing all causes of residue
deposits, completely clean fireplace and appliance off residue
before reusing appliance
Log set cycles to pilot, but room
temperature drops to a lower
than ideal level before log set
comes back on
30
Note: After
POSSIBLE CAUSE
1.
Heater burning vapors from
paint, hair spray, glues, cleaners,
chemicals, new carpet, etc. (See
IMPORTANT statement above)
2. Low fuel supply (propane/LP
only)
3. G as le a k . See Wa r n i n g
statement at top of page
1. Not enough fresh air is avail
able
2. Low line pressure
3. O D S/ p il ot i s pa r ti al ly
clogged
1. G as le a k . See Wa r n i n g
statement at top of page
2. Control valve or gas control
defective
1. Foreign matter between con
trol valve and burner
2. G as le a k . See Wa r n i n g
statement at top of page
1. Improper log placement
2. Drafts or other air currents
affecting flame pattern
3. Air hole s at bur n er inlet
blocked
4. Burner flame holes blocked
1. Thermostat sensing bulb needs
to be repositioned (Thermo
stat-Controlled Models Only)
2. Hand-held remote control is
too close to heater (RemoteReady Models Only)
www.desatech.com
REMEDY
1. Op en window to ven ti late
room. Stop using odor causing products while heater is
running
2. Refill supply tank (propane/LP
only)
3. Locate and correct all leaks
(see Checking Gas Connec-tions, page 16)
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 25)
1. Locate and correct all leaks
(see Checking Gas Connections, page 16)
2. Replace control valve or gas
control
1. Take apart gas tubing and
remove foreign matter
2. Locate and correct all leaks
(see Checking Gas Connec-tions, page 16)
1. Properly locate logs (see Installing Logs, page 17)
2. El im inate source of drafts
around heater
3. Clean out air holes at burner
inlet. Periodically repeat as
needed
4. Remove blockage
1. Reposition thermostat sensing
bulb (see Instructions for Op
-
tional Positioning of Thermostat Sensing Bulb, page 26)
2.
Move hand-held remote control
unit farther away from the heater
113192-01B
-
-
-
-
ACCESSORIES
NOTICE: All accessories may
not be available for all fireplace
models.
Purchase these firebox accessories from your local
dealer. If they can not supply these accessories,
call DESAʼs Sales Department at 1-866-672-6040
for information. You can also write to the address
listed on the back page of this manual.
EQUIPMENT SHUTOFF VALVE
GA5010
All Models. Equipment shutoff valve with 1/8"
NPT tap.
CLEANING KIT - GCK/CCK
All Models. Your vent-free gas appliance requires
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.
FIREBOX BRICK LINER - G8007
(Not Shown)
All Models. Ceramic fiber firebox liner adds the
look of real brick.
MANTELS
GMC55F - Cabinet Mantel & Base, stained oak
GMC56F - Corner Mantel & Base - stained oak
PERIMETER TRIM
PT36 - Perimeter Trim - Black
PT36B - Perimeter Trim - Brushed Brass
PT36PB - Perimeter Trim - Polished Brass
PT36P - Perimeter Trim - Platinum
RECEIVER AND HAND-HELD
THERMOSTAT REMOTE CONTROL
KIT - GHRCTB
For all Remote-Ready Models. Allows the gas log
heater to be operated in a manually or thermostati
cally controlled 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
For all Remote-Ready Models. Allows the gas log
heater to be turned on and off by using a hand-held
remote control.
WALL-MOUNT THERMOSTAT
SWITCH - GWMT1 (Not Shown)
For all remote ready models. The desired comfort
setting can be selected on the wall thermostat and
the fireplace will automatically cycle from pilot to
the heat setting selected.
WALL-MOUNT ON/OFF SWITCH
GWMS2 (Not Shown)
For all remote ready models. Allows the gas fireplace to be turned on and off with a wall switch.
CLEANING KIT - GCK (Not Shown)
For all models. Your vent-free gas appliance requires 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.
FIRE CRACKLE - CF6-A
Creates the sound of a real burning fire.
-
113192-01B
www.desatech.com
31
ILLUSTRATED PARTS BREAKDOWN
L
PG
19
21
22
23
24
17
14
14
16
13
12
27
28
29
2
11
5
4
3
7
9
10
10
8
6
1
18
20
26
16
15
25
MODELS VSGF36PT, VSGF36NT
32
www.desatech.com
113192-01B
PARTS LIST
This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions
listed under Replacement Parts on page 26 of this manual.
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 FIREPLACE
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 Heating
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.