Desa VsGF28nTF Quick start guide
For more information, visit www.desatech.com
WARNING: If the information in this manual is not
— WHAT TO DO IF YOU SMELL GAS
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THERMOSTATICALLY-CONTROLLED MODELS
VSGF28NTF AND VSGF28PTF
UNVENTED (VENT-FREE) GAS FIREPLACE SYSTEM
OWNER’S OPERATION AND INSTALLATION MANUAL
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2
SAFETY
TABLE OF CONTENTS
Safety .................................................................. 2
Local Codes......................................................... 4
Product Identication........................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 8
Operation........................................................... 18
Inspecting Burners............................................. 20
Cleaning ............................................................ 21
Wiring Diagram.................................................. 22
Specications .................................................... 22
Replacement Parts............................................ 22
Troubleshooting................................................. 23
Technical Service............................................... 27
Service Hints ..................................................... 27
Accessories ....................................................... 27
Parts .................................................................. 28
Warranty ..............................................Back Cover
alteration, service or main-
to this manual for correct
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tance or additional infor-
WARNING: This is an
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from the room in which
and ventilation air must
Air
for Combustion and Ven-
tilation
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stalled in an aftermarket*,
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chemicals known to the state
of California to cause cancer or
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119303-01E 3
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away from hot surfaces to avoid
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dren when they are in the room
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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 neighbor’s phone. Follow the gas sup-
plier’s instructions
• if you cannot reach your gas supplier,
call the re department
SAFETY
Continued
Early signs
of carbon monoxide poisoning resemble the
u, with headaches, dizziness or nausea. If
you have these signs, the replace may not
be working properly.
Have replace serviced. Some people are
more affected by carbon monoxide than oth-
ers. These include pregnant women, people
with heart or lung disease or anemia, those
under the inuence of alcohol and those at
high altitudes.
Natural and
propane/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 replace.
this heater or its controls can
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WARNING: Do not allow fans
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4
SAFETY
Continued
11. Do not run replace
• where ammable liquids or vapors are
used or stored
• under dusty conditions
12. Do not use this replace to cook food or
burn paper or other objects.
13. Do not use replace if any part has been
exposed to or under water. Immediately
call a qualied service technician to in-
spect the replace and to replace any part
of the control system and any gas control
which has been under water.
14. Do not operate fireplace if any log is
broken. Do not operate replace if a log
is chipped (dime-sized or larger).
15. Turn fireplace off and let cool before
servicing. Only a qualied service person
should service and repair replace.
16. Operating replace above elevations of
4,500 feet could cause pilot outage.
17. 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).
18. Provide adequate clearances around air
openings.
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth of Mas-
sachusetts.
Sellers of unvented propane or natural
gas-red 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.
LOCAL CODES
Install and use replace 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.
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.
4. This replace shall not be installed in a
bedroom or bathroom.
5. Do not use this replace as a wood-burn-
ing replace. Use only the logs provided
with the replace.
6. Do not add extra logs or ornaments such
as pine cones, vermiculite or rock wool.
Using these added items can cause soot-
ing. Do not add lava rock around base.
Rock and debris could fall into the control
area of replace.
7. This replace is designed to be smoke-
less. If logs ever appear to smoke, turn
off replace and call a qualied service
person. Note: During initial operation,
slight smoking could occur due to log cur-
ing and replace burning manufacturing
residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning, page 21.
9. 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.
10. This replace needs fresh air ventilation to
run properly. This replace has an Oxygen
Depletion Sensing (ODS) safety shutoff
system. The ODS shuts down the re-
place if enough fresh air is not available.
See Air for Combustion and Ventilation,
page 6. If replace keeps shutting off, see
Troubleshooting, page 23.
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119303-01E 5
PRODUCT IDENTIFICATION
Figure 1 - Log Base Assembly
Log Set
Base
Assembly Front
Burner
Rear
Burner Top Louver
Assembly
Fireplace
Hood
Bottom Louver
Assembly
Screen
Assembly
Top Outer Casing
Figure 2 - Fireplace
UNPACKING
Blower Assembly
BLOWER ASSEMBLY
This replace has a blower assembly. The
blower operates thermostatically and has a
variable speed control. The blower circulates
heated air from the replace into the room.
Use of blower is optional.
THERMOSTAT CONTROL
This replace has a thermostat sensing bulb
and control valve. The thermostat controls the
heat output and ame height. This maintains
a consistent room temperature. Even the
lowest setting provides realistic ames and
glowing embers from two burners. Selecting
higher comfort settings allows replace to run
longer, producing greater heat output. At lower
comfort settings, the replace will run less.
This results in increased heating comfort. This
can also result in lower gas results.
CAUTION: Do not remove the
1. With utility knife, cut carton all the way
around above staples on bottom tray. Lift
carton off of heater. Remove packing.
Note: Hood is located in packing on right
hand side of heater front. Lift heater off
bottom tray.
2. Locate two screws above top corners of
the replace screen. Remove and discard
these screws. Lift replace screen up and
pull out to remove.
3. Remove protective packaging applied to
logs, log base assembly, and replace.
4. Remove replace hood from carton insert.
5. Check all items for any shipping damage.
If damaged, promptly inform dealer where
you bought replace.
PRODUCT FEATURES
This vent-free replace is clean burning. It
requires no outside venting. There is no heat
loss out a vent or up a chimney. Heat is gen-
erated by both realistic ames and glowing
embers. When used without the blower, the
replace requires no electricity making it ideal
for emergency backup heat.
SAFETY DEVICE
This replace 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 replace if there is not
enough fresh air.
This replace has a piezo ignitor. This sys-
tem requires no matches, batteries or other
sources to light replace.
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AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
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National Fuel Gas
Code, ANSI Z223.1/NFPA 54, the
International Fuel Gas Code, or
Today’s homes are built more energy efcient
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
efcient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
Exhaust fans, reboxes, 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 appli-
ances.
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 6 through 9 will
help you classify your space and provide
adequate ventilation.
The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of un-
usually tight construction, you must provide
additional fresh air.
construction where:
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2
and
and
If your home meets all of the three criteria
Ventilation Air From Outdoors,
If your home does not meet all of the three
Determining
Fresh-Air Flow for Heater Location
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
1,000 Btu/hr (4.8 m3per kw) of the aggregate
input rating of all appliances installed in that
space and an unconned space as a space
whose volume is not less than 50 cubic feet
per 1,000 Btu/hr (4.8 m3per kw) of the ag-
gregate 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 un-
conned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.
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119303-01E 7
AIR FOR COMBUSTION AND VENTILATION
Continued
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: 63,360 Btu/Hr (maximum the
space can support)
79,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the above example is a conned
space because the actual Btu/Hr used is more
than the maximum Btu/Hr the space can sup-
port. You must provide additional fresh air. Your
options are as follows:
A. Rework worksheet, adding the space of an
adjoining room. If the extra space provides an
unconned space, remove door to adjoining
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building,
page 8.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 8.
C. Install a lower Btu/Hr replace, if lower Btu/
Hr size makes room unconned.
If the actual Btu/Hr used is less than the
maximum Btu/Hr the space can support, the
space is an unconned space. You will need
no additional fresh air ventilation.
WARNING:Iftheareainwhich
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National Fuel
Gas Code,ANSI Z223.1/NFPA 54,
the International Fuel Gas Code,
40,000
39,000
79,000
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Use this work sheet to determine if you have
a conned or unconned space.
Includes the room in which you will
install heater plus any adjoining rooms with
doorless passageways or ventilation grills
between the rooms.
1. Determine the volume of the space (length
x width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: 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 deter-
mine 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 replace __________ Btu/Hr
Gas water heater* __________ Btu/Hr
Gas furnace __________ Btu/Hr
Vented gas heater __________ Btu/Hr
Gas replace logs __________ Btu/Hr
Other gas appliances*+__________ Btu/Hr
Total =_________ Btu/Hr
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater __________ Btu/Hr
Vent-free replace +_________ Btu/Hr
Total =_________ Btu/Hr
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VENTILATION AIR
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned space, you must provide
two permanent openings: one within 12" of the
ceiling and one within 12" of the oor on the
wall connecting the two spaces (see options
1 and 2, Figure 3). You can also remove door
into adjoining room (see option 3, Figure 3).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
AIR FOR COMBUSTION AND VENTILATION
Continued
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent openings: one within 12" of the ceiling
and one within 12" of the oor. 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, 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 thermo-
stat-controlled power vent. Heated air entering
the attic will activate the power vent.
Figure 4 - Ventilation Air from Outdoors
Figure 3 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
V e ntilation Grills
Into Adjoining Room,
Option 2
V e ntilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
Outlet
Air
V e ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air V e ntilated
Crawl Space
T o
Crawl
Space
T o Attic
INSTALLATION
NOTICE: This heater is intended
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WARNING: Never install the
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119303-01E 9
WARNING: Thesemodelshave
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currents move heat to wall sur-
smoke, aromatic candles, clean-
Note: Your replace is designed to be used in
zero clearance installations. Wall or framing ma-
terial can be placed directly against any exterior
surface on the rear, sides or top of your replace,
except where standoff spacers are integrally at-
tached. If standoff spacers are attached to your
replace, 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 12.
IMPORTANT: Vent-free heaters add moisture
to the air. Although this is benecial, installing
replace in rooms without enough ventilation
air may cause mildew to form from too much
moisture. See Air for Combustion and Ventila-
tion, page 6.
IMPORTANT: Make sure the replace is level.
If replace is not level, log set will not work
properly.
Use the correct gas type (natural or propane/
LP) for your replace. If your gas supply is not
correct, do not install replace. Call dealer
where you bought replace for proper type
replace.
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This replace has a blower assembly with an
electrical cord. The electrical cord is ve feet
in length. You must locate replace within
reach of 120-volt grounded electrical outlet. If
not, you must install an electrical outlet within
reach of replace power cord. The GA3555
outlet accessory may be used for built-in
installation when a blower is installed.
INSTALLING HOOD
Install hood to rail already installed in replace
as shown in Figure 5. Use 3 Phillips screws
provided.
INSTALLATION
Continued
Figure 5 - Installing Hood
Screw
Hood
Rail
ASSEMBLING AND ATTACHING
IMPORTANT: If you are recessing the rebox
in a wall, do not attach trim at this time. See
Built-In Fireplace Installation, page 12.
Note: These instructions are for assembling
and attaching trim to replace.
1. Remove packaging from three pieces
of trim.
2. Locate four screws, two adjusting plates
with set screws, and two shims in the
hardware packet.
3. Align shim under adjusting plate as shown
in Figure 6, page 10.
4. Slide one end of adjusting plate/shim
in slot on mitered edge of top trim (see
Figure 6, page 10).
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5. Slide other end of adjusting plate/shim
in slot on mitered edge of side trim (see
Figure 6).
6. While rmly holding edges of trim together,
tighten both set screws on the adjusting
plate with slotted screwdriver.
7. Repeat steps 1 through 6 for other side.
8. Tighten trim hanging screws (#10 x 6.25
shoulder) into holes in cabinets. Place
the assembled trim onto replace cabinet.
Align hanging notches on trim with hang-
ing screws on side of replace (see Figure
7). Push trim rmly into place, sliding
hanging notches over hanging screws.
INSTALLATION
Continued
INSTALLATION CLEARANCES
WARNING: Maintain the
Carefully follow these instructions. This will
ensure safe installation.
*Minimum 16" from Side Wall
*
Example
Figure 8 - Minimum Clearance for
Combustible to Wall
A. Clearances from the side of the replace
cabinet to any combustible material and
wall should follow diagram in Figure 8.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This com-
bustible material must be 4" from the side
of the replace opening (see Figure 8).
B. Clearances from the top of the replace
opening to the ceiling should not be less
than 42".
INSTALLATION
Conventional installation of this fireplace
involves installing replace along with the
corner, face, or cabinet mantel with hearth
base accessories against a wall in your home.
Follow the instructions in this section to install
the replace in this manner.
1. Assemble cabinet mantel, hearth base,
and trim accessories. Assembly instruc-
tions are included with each accessory.
2. When installing blower, install a properly
grounded, 120 volt three-prong electrical
outlet at replace location if an outlet is not
there. If possible, locate outlet so cabinet
mantel will cover it when installed (see
Figure 9, page 11).
3. Install gas piping to replace location. This
installation includes an approved exible
gas line (if allowed by local codes) after
the equipment shutoff valve. The exible
gas line must be the last item installed on
the gas piping. See Installing Gas Piping
to Fireplace Location,page 13.
Figure 6 - Assembling Perimeter Trim
Side Trim
Slot
Mitered
Edge
Slot
Shim
Set Screws
Adjusting
Plate Top
Trim
Mitered
Edge
Assembled
Trim
Figure 7 - Attaching Perimeter Trim to
Fireplace
Trim
Hanging
Screws
Hanging
Notches
on Trim
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119303-01E 11
INSTALLATION
Continued
Figure 9 - Placing Hearth Base
Accessory Against Wall
Electrical
Outlet
Hearth Base
Rigid Pipe and Gas
Shutoff Valve
Gas Line Access Hole
Figure 10 - Installing Cabinet Mantel
Cabinet
Mantel
Figure 11 - Location of Nailing Flanges
Nailing
Flanges
4. Place hearth base accessory against wall
at installation location. Cut an access
hole in hearth top to run exible gas line
to replace (see Figure 9). Make sure to
locate access hole so cabinet mantel will
cover it when installed.
Note: You can secure base to oor using
wood screws. Countersink screw heads and
putty over.
5. Route exible gas line through access
hole in hearth base.
6. Center cabinet mantel on hearth base
(see Figure 10). Make sure mantel is ush
against wall.
7. Break off nailing anges (see Figure 11)
with hammer or pliers.
8. Place cardboard or other protective mate-
rial on top of hearth base. Carefully set
replace on protective material, with back
of replace inside mantel opening.
9. If blower is installed, route blower electri-
cal cord through access holes in either
side of replace.
Note: Bushing may be moved if necessary.
Plug electrical cord into electrical outlet.
10. Carefully insert fireplace into cabinet
mantel. Be careful not to scratch or dam-
age hearth base, cabinet mantel, or any
laminate trim on hearth base. Remove
protective material from top of hearth base
and from front of replace (if any).
Note: You can secure replace to hearth
or oor. Open lower louver. Locate screw
holes in bottom of base. Tighten wood
screws through these holes and into hearth
or oor.
11. Attach exible gas line from replace gas
regulator to gas supply. See Connecting
Fireplace to Gas Supply,page 15.
12. Check all gas connections for leaks. See
Checking Gas Connections, page 16.
Figure 12 - Inserting Fireplace into
Cabinet Mantel
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BUILT-IN FIREBOX INSTALLATION
Built-in installation of this rebox involves
installing rebox into a framed-in enclosure.
This makes the front of rebox ush with wall.
Optional brass trim accessories are available
(see Accessories, page 27). The brass trim
will extend past sides of rebox approximately
1/2". This will cover the rough edges of the
wall opening. If installing a mantel above the
rebox, you must follow the clearances shown
in Figure 8, page 10. Use the following instruc-
tions to install the rebox in this manner.
1. Frame in rough opening. Use dimensions
shown in Figure 13 for the rough opening.
If installing in a corner, use dimensions
shown in Figure 14 for the rough opening.
The height is 33" which is the same as the
wall opening above.
2. If using blower, install and properly ground
GA3555, three-prong 120 volt electrical
outlet, in replace. Follow instructions
included in kit.
INSTALLATION
Continued
Figure 13 - Rough Opening for Installing
in Wall
Figure 14 - Rough Opening for Installing
in Corner
35
1
/
2
"
17
3
/
4
"
33"
39
3/8
"
27
7/8
"
55
5/8
"
35
1/2
"
Figure 15 - Attaching Fireplace to Wall
Studs
Nailing
Flanges
Nails or Wood
Screws
3. Install gas piping into replace location.
This installation includes an approved
exible gas line (if allowed by local codes)
after the equipment shutoff valve. The ex-
ible gas line must be the last item installed
on the gas piping. See Installing Gas Pip-
ing to Fireplace Location,page 13.
4. Carefully set replace in front of rough
opening with back of replace inside wall
opening.
5. Carefully insert fireplace into rough
opening.
6. Attach exible gas line to gas supply.
See Connecting Fireplace to Gas Supply,
page 15.
7. Attach replace to wall studs using nails
or wood screws through holes in nailing
ange (see Figure 15).
8. Check all gas connections for leaks. See
Checking Gas Connections, page 16.
9. Plug electrical cord into electrical outlet
installed in step 2.
10. Install trim after nal nishing and/or paint-
ing of wall (see Figure 7, page 10).
IMPORTANT: When nishing your rebox,
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 rebox. Combustible materials should
never overlap the rebox front facing.
WARNING: Do not allow any
Actual Framing
Height 32 3/8" 33"
Front Width 34 5/16" 35 1/2"
Depth 16 11/16" 17 3/4"
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119303-01E 13
INSTALLATION
Continued
13"
16"
19"
21"
2 1/2"
6"
8"
10"
Minimum Non-
Combustible
Material
Figure 16 - Minimum Mantel Clearances
for Built-In Installation
Mantel Shelf
Note:
All Vertical
measurements
are from top of
replace opening
to bottom of
mantel shelf.
IMPORTANT: Noncombustible materials such
as brick, tile, etc. may overlap the front facing,
but should never cover any necessary open-
ings like louvered slots.
WARNING: Do not allow
WARNING: Use only non-
-
Mantel Clearances for Built-In
Installation
If placing mantel above built-in replace, you
must meet minimum clearance between man-
tel shelf and top of replace opening.
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
-
minimum clearances shown in
CAUTION: Never connect
WARNING: Never connect
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14
INSTALLATION
Continued
Installation Items Needed
Before installing replace, 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 exible gas line with gas con-
nector (if allowed by local codes) (not
provided)
* A CSA design-certied equipment shutoff
valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase
the optional CSA design-certied equipment
shutoff valve from your dealer.
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" of water. If you do not re-
duce incoming gas pressure, heater regulator
damage could occur. Install external regulator
with the vent pointing down as shown in Figure
17. Pointing the vent down protects it from
freezing rain or sleet.
* Purchase the optional CSA design-certied
equipment shutoff valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 18 - Gas Connection
Sediment Trap
CSA Design-Certied
Equipment Shutoff Valve
With 1/8" NPT Tap*
3" Minimum
Cap Pipe Tee
Nipple Joint
Natural Gas
From Gas Meter
(5" W.C.** to 10.5"
W.C. Pressure)
From External
Regulator
(11" W.C.** to 14"
W.C. Pressure)
CAUTION: Use only new,
-
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 replace
(see Figure 18).
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
requirements for locating equipment shutoff
valve to replaces.
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 replace valves.
Propane/LP
Supply Tank
External
Regulator
Figure 17 - External Regulator With Vent
Pointing Down
Vent
Pointing
Down
www.desatech.com
119303-01E 15
INSTALLATION
Continued
Figure 19 - Removing Log Base
Assembly From Fireplace
Figure 20 - Attaching Flexible Gas Lines
Flexible Gas Line
from Fireplace
Gas Regulator
To Fireplace
Gas Regulator
Equipment
Shutoff Valve
Provided by
Installer
To External
Regulator
Natural Gas
To Gas Meter
3. Route gas line (provided by installer)
from equipment shutoff valve to replace.
Route exible gas supply line through one
of the access holes.
-
4. Attach the exible gas line to gas supply
(see Figure 20). Check tightness of ex-
ible gas line attached to gas regulator of
replace (see Figure 20).
5. Check all gas connections for leaks. See
Checking Gas Connections, page 16.
6. Replace log base assembly back into
replace. Feed exible gas line into re-
place base area while replacing log base
assembly. Make sure the entire exible
gas line is in replace base area. Reat-
tach log base assembly to replace with
screws removed in step 2.
We recommend that you install a sediment
trap in supply line as shown in Figure 18.
Locate sediment trap where it is within reach
for cleaning. Install in piping system between
fuel supply and replace. Locate sediment
trap where trapped matter is not likely to
freeze. A sediment trap traps moisture and
contaminants. This keeps them from going
into replace gas controls. If sediment trap
is not installed or is installed wrong, replace
may not run properly.
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not
provided)
1. Remove replace screen. Remove one
screw that holds replace screen in place
for shipping. This screw is located near top
left side of screen. Discard screw. Lift re-
place screen up and pull out to remove.
2. Remove screws that attach log base
assembly to replace (see Figure 19).
Carefully lift up log base assembly and
remove from replace (see Figure 19).
Note: If adding the G8000 series brick liner
accessory, install it now. Follow instructions
in G8000 accessory kit.
www.desatech.com 119303-01E
16
and connections, internal and
external to unit, for leaks after
a noncorrosive leak detection
-
1. Disconnect replace with its main gas
valve (control valve) and equipment shut-
off valve from gas supply piping system.
Pressures in excess of 1/2 psig will dam-
age replace regulator.
2. Cap off open end of gas pipe where equip-
ment 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 sys-
tem. Apply noncorrosive leak detection
uid 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 recon-
nected ttings for leaks.
1. Close equipment shutoff valve (see Fig-
ure 21).
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.
INSTALLATION
Continued
3. Check all joints from gas meter to equip-
ment shutoff valve for natural gas or pro-
pane/LP supply to equipment shutoff valve
for propane/LP (see Figures 22 and 23).
Apply noncorrosive leak detection uid to
all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 23 - Checking Gas Joints for
Propane/LP Gas
Propane/LP
Supply Tank
Figure 22 - Checking Gas Joints for
Natural Gas
Gas Control Valve
Equipment Shutoff Valve
Equipment Shutoff Valve
Gas Meter
Gas Control Valve
Figure 21 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
www.desatech.com
119303-01E 17
INSTALLATION
Continued
Figure 24 - Installing Bottom Logs
Figure 25 - Installing Top Logs
Rear Log
Grate
Prongs
Bottom
Log
Base
Assembly Front Right
Log
Front
Left Log
Middle
Right Log
Middle Left Log
Bottom
Log
Pin on Front
Left Log
CONNECTIONS
1. Open equipment shutoff valve (see Figure
21, page 16).
2. Open main gas valve located on or near
gas meter for natural gas or open pro-
pane/LP supply tank valve.
3. Make sure control knob of replace is in
the OFF position.
4. Check all joints from equipment shutoff
valve to gas control valve (see Figures
22 or 23, page 16). Apply noncorrosive
leak detection uid to all joints. Bubbles
forming show a leak.
5. Correct all leaks at once.
6. Light replace (see Operation, page 18).
Check all other internal joints for leaks.
7. Turn off replace (see To Turn Off Gas to
Appliance, page 19, depending on your
model).
INSTALLING LOGS
-
CAUTION: Do not remove
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place bottom log in center of the base as-
sembly as shown in Figure 24.
2. Rest rear log in back corner sections of
base assembly as shown in Figure 24.
Make sure log is completely vertical and
not leaning in toward burner where the
ame will touch the log.
3. Position front right log against right side
of grate prongs (see Figure 24).
4. Position front left log against left side of
grate prongs (see Figure 24).
5. Place middle right log over front right and
bottom logs as shown in Figure 25. Be sure
hole in middle right log seats over pin in
bottom log.
6. Place middle left log over front left and
bottom logs as show in Figure 25. Be sure
hole in middle left log seats over pin in front
left log.
7. Install replace screen by slipping notches
of replace screen over screws on front
of replace (see Figure 26, page 18).
www.desatech.com 119303-01E
18
Figure 26 - Installing Fireplace Screen
Notches
Screws for
Mounting
Screen
OPERATION
-
INSTALLATION
Continued
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
-
-
WHAT TO DO IF YOU SMELL GAS
-
LIGHTING
INSTRUCTIONS
-
1.
STOP! Read the safety information, col-
umn 1.
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise to the
OFF position (see Figure 27, page 19).
www.desatech.com
119303-01E 19
Figure 27 - Control Knob and Ignitor
Button Location
Ignitor Button
Control Knob
OPERATION
Continued
CAUTION: Do not try to ad-
TO TURN OFF GAS
1. Turn control knob clockwise to the
OFF position.
2. Close equipment shutoff valve (see Fig-
ure 21, page 16).
THERMOSTAT CONTROL
You can set the thermostat control knob to any
comfort level between HI and LO. The ther-
mostat will gradually modulate the heat output
and ame 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
1. Follow steps 1 through 5 under Lighting
Instructions, page 18.
2. Press control knob and light pilot with
match.
3. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Now follow step 8
under Lighting Instructions, column 1.
Figure 28 - Pilot
Ignitor
Electrode Pilot Burner
4. Wait ve (5) minutes to clear out any gas.
Then smell for gas, including near the
oor. If you smell gas, STOP! Follow “B”
in the safety information, page 18. If you
don’t smell gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press in control knob
for ve (5) seconds (see Figure 27).
Note: If running replace for rst 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.
Note: If pilot does not stay lit, contact a
qualied 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 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 3
through 7. This replace 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.
9. To leave pilot lit and shut off burners only,
turn control knob clockwise to the
PILOT position.
www.desatech.com 119303-01E
20
OPERATION
Continued
INSPECTING BURNERS
BLOWER
-
Figure 29 - Correct Pilot Flame Pattern
(Propane/LP Shown)
Figure 30 - Incorrect Pilot Flame Pattern
(Propane/LP Shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Check pilot ame pattern and burner ame
patterns often.
Figure 29 shows a correct pilot ame pattern.
Figure 30 shows an incorrect pilot ame pat-
tern. The incorrect pilot ame is not touching
the thermocouple. This will cause the thermo-
couple to cool. When the thermocouple cools,
the replace will shut down.
If pilot ame pattern is incorrect, as shown
in Figure 30
• turn replace off (see To Turn Off Gas to
Appliance, page 19)
• see Troubleshooting, page 23
Note: The pilot ame on natural gas units will
have a slight curve, but ame should be blue
and have no yellow or orange color.
ame pattern shows yellow tipping at top of
blue ame.
-
-
If front burner ame pattern is incorrect, as
shown in Figure 32
• turn replace off (see To Turn Off Gas to
Appliance, page 19)
• see Troubleshooting, page 23
CORRECT FLAME PATTERN AT HIGH POSITION
INCORRECT FLAME PATTERN AT HIGH POSITION
Figure 32 - Incorrect Front Burner Flame
Pattern
Figure 31 - Correct Front Burner Flame
Pattern
Yellow
Tipping
At Top
of Blue
Flame
CORRECT FLAME PATTERN AT HIGH POSITION
INCORRECT FLAME PATTERN AT HIGH POSITION
Locate the blower switch by opening lower
louver on replace. 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
sufcient increase in rebox temperature.
Note: It is safe to operate replace with blower
turned off. However, the blower helps distribute
heated air from the replace.
Note: Periodically check the louvers of the
rebox and remove any dust, dirt or other
obstructions.
Figure 31 shows correct front burner ame
pattern. Figure 32 shows incorrect front
burner ame pattern. The incorrect burner
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