Desa VsGF28nTF Quick start guide
For more information, visit www.desatech.com
WARNING: If the information in this manual is not fol-
— WHAT TO DO IF YOU SMELL GAS
• Do not touch any electrical switch; do not use any
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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 INFORMATION
TABLE OF CONTENTS
Safety Information ............................................... 2
Local Codes......................................................... 4
Product Identication........................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Air For Combustion and Ventilation..................... 6
Installation ........................................................... 8
Operating Fireplace........................................... 17
Inspecting Burners............................................. 19
Cleaning and Maintenance................................ 20
Wiring Diagram.................................................. 21
Specications .................................................... 21
Troubleshooting................................................. 22
Replacement Parts............................................ 26
Technical Service............................................... 26
Service Hints ..................................................... 26
Accessories ....................................................... 26
Illustrated Parts Breakdown and Parts List........ 28
Warranty Information ...........................Back Cover
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teration, 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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119303-01A 3
WARNING: Do not allow fans
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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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SAFETY INFORMATION
Continued
chemicals known to the state
of California to cause cancer or
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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.
Get fresh air at once! Have replace serviced.
Some people are more affected by carbon monox-
ide than others. 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 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 replace.
this heater or its controls can
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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) in-
side 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 supplier’s
instructions
• if you cannot reach your gas supplier, call
the re department
4. This replace shall not be installed in a bed-
room or bathroom.
5. Do not use this replace as a wood-burning
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 sooting. 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 smokeless. If
logs ever appear to smoke, turn off replace
and call a qualied service person. Note:
During initial operation, slight smoking could
occur dir to log curing and replace burning
manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 20.
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 Deple-
tion Sensing (ODS) safety shutoff system. The
ODS shuts down the replace if enough fresh
air is not available. See Air for Combustion
and Ventilation, page 6. If replace keeps
shutting off, see Troubleshooting, page 22.
SAFETY INFORMATION
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 fireplace if any part has been
exposed to or under water. Immediately call
a qualied service technician to inspect the
replace and to replace any part of the control
system and any gas control which has been
under water.
14. Do not operate replace if any log is broken.
Do not operate replace if a log is chipped
(dime-sized or larger).
15. Turn replace 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.
LOCAL CODES
Install and use replace with care. Follow all local
codes. In the absence of local codes, use the lat-
est edition of The National Fuel Gas Code ANSI
Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Note: Where listed vented decorative logs are
required, thermostat operation is not permitted.
State of Massachusetts: The installa-
tion must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural
gas-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.
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119303-01A 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
CAUTION: Do not remove the
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 in the packing on
the right hand side of the heater front. Lift the
heater off the bottom tray.
Blower
Assembly
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 generated 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 heat-
ers. The ODS/pilot system shuts off the replace
if there is not enough fresh air.
This replace has a piezo ignitor. This system
requires no matches, batteries or other sources to
light replace.
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.
THERMOASTAT CONTROL
This replace has a thermostat sensing bulb and
control valve. The thermostat controls the heat
output and ame height. This maintains a consis-
tent room temperature. Even the lowest setting
provides realistic ames and glowing embers from
two burners. Selecting higher comfort settings al-
lows 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.
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AIR FOR COMBUSTION
AND VENTILATION
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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 ef-
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, 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 appliances.
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 classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 7 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 unusually
tight construction, you must provide additional
fresh air.
construction where:
-
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
per hour (4.8 m3 per 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 per hour
(4.8 m3 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
unconned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
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119303-01A 7
AIR FOR COMBUSTION
AND VENTILATION
Continued
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 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 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. Di-
rect-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
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 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 unconned
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 replace, if lower Btu/Hr
size makes room unconned.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconned space. You will need no additional
fresh air ventilation.
WARNING:If the areainwhich
in the National Fuel Gas Code,
ANSI Z223.1/NFPA54 Section 5.3
40,000
39,000
79,000
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VENTILATION AIR
This fresh air would come from an adjoining un-
conned space. When ventilating to an adjoining
unconned space, you must provide two perma-
nent 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, Section 5.3, 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 permanent 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,
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.
Figure 4 - Ventilation Air from Outdoors
Figure 3 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
INSTALLATION
NOTICE: This heater is intended
-
WARNING: Never install the
• in a recreational vehicle
• where curtains, furniture,
• in windy or drafty areas
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119303-01A 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 material
can be placed directly against any exterior surface
on the rear, sides or top of your replace, except
where standoff spacers are integrally attached. 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 Fire-
place Installation, page 11.
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is benecial, installing re-
place in rooms without enough ventilation air may
cause mildew to form from too much moisture. See
Air for Combustion and Ventilation, 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 cor-
rect, do not install replace. Call dealer where you
bought replace for proper type replace.
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 acces-
sory 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 11.
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 hard-
ware packet.
3. Align shim under adjusting plate as shown in
Figure 6, page 10.
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4. Slide one end of adjusting plate/shim in slot
on mitered edge of top trim (see Figure 6).
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 shoul-
der) into holes in cabinets. Place the assembled
trim onto replace cabinet. Align hanging notches
on trim with hanging 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 fireplace
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 combus-
tible 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 replace 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 instructions 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 in-
stallation 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.
4. Place hearth base accessory against wall at instal-
lation location. Cut an access hole in hearth top
to run exible gas line to replace (see Figure
9, page 11). 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.
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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119303-01A 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
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 material
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 electrical 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 replace into cabinet mantel.
Be careful not to scratch or damage 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 14.
12. Check all gas connections for leaks. See
Checking Gas Connections, page 15.
32 3/8" 33"
Front Width 34 5/16" 35 1/2"
16 11/16" 17 3/4"
BUILT-IN FIREBOX INSTALLATION
Built-in installation of this rebox involves install-
ing rebox into a framed-in enclosure. This makes
the front of rebox ush with wall. Optional brass
trim accessories are available (see Accessories,
page 20). 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 6, page 10. Follow
the instructions below to install the rebox in
this manner.
Figure 12 - Inserting Fireplace into
Cabinet Mantel
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12
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 out-
let, in replace. Follow instructions included
in kit.
3. Install gas piping into replace location. This
installation includes an approved exible gas
line (if allowed by local codes) after the equip-
ment 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.
4. Carefully set replace in front of rough opening
with back of replace inside wall opening.
5. Carefully insert replace into rough opening.
6. Attach exible gas line to gas supply. See Con-
necting Fireplace to Gas Supply, page 14.
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 15.
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
9. Plug electrical cord into electrical outlet
installed in step 2.
10. Install trim after nal nishing and/or painting
of wall (see Figure 7, page 10).
Mantel Clearances for Built-In
Installation
If placing mantel above built-in replace, you must
meet minimum clearance between mantel shelf and
top of replace opening.
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
-
• remove the mantel
minimum clearances shown in
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119303-01A 13
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WARNING: Never connect
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 connector
(if allowed by local codes) (not provided)
* A CSA design-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certied equipment shutoff valve from your
dealer. See Accessories, page 26.
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 reduce incoming gas pres-
sure, 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.
CAUTION: Use only new,
-
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.
Propane/LP
Supply Tank External
Regulator
Figure 17 - External Regulator With Vent
Pointing Down
Vent
Pointing
Down
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14
INSTALLATION
Continued
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 re-
quirements 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.
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.
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 26.
** 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)
Installation Items Needed
• 5/16" hex socket wrench or nut-driver
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not pro-
vided)
1. Remove replace screen. Remove one screw
that holds replace screen in place for ship-
ping. This screw is located near top left side
of screen. Discard screw. Lift replace 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 acces-
sory, install it now. Follow instructions in G8000
accessory kit.
3. Route gas line (provided by installer) from
equipment shutoff valve to replace. Route
exible gas supply line through one of the
access holes.
Figure 19 - Removing Log Base
Assembly From Fireplace
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119303-01A 15
-
and external to unit, for leaks
-
WARNING: Never use an
INSTALLATION
Continued
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
-
4. Attach the exible gas line to gas supply (see
Figure 20). Check tightness of exible 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 replace base area
while replacing log base assembly. Make sure
the entire exible gas line is in replace base
area. Reattach log base assembly to replace
with screws removed in step 2.
1. Disconnect replace 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 replace
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 uid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect replace and equipment shutoff
valve to gas supply. Check reconnected ttings
for leaks.
1. Close equipment shutoff valve (see Figure 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.
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 22 and 23, page 16). Apply
noncorrosive leak detection uid to all joints.
Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 21 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
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16
CONNECTIONS
1. Open equipment shutoff valve (see Figure 21,
page 15).
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 replace is in the
OFF position.
4. Check all joints from equipment shutoff valve
to gas control valve (see Figures 22 or 23).
Apply noncorrosive leak detection uid to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light replace (see Operating Fireplace, page
17. Check all other internal joints for leaks.
7. Turn off replace (see To Turn Off Gas to
Appliance, page 18, depending on your
model).
INSTALLATION
Continued
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 assem-
bly 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, page 17.
Be sure hole in middle right log seats over pin
in bottom log.
6. Place middle left log over front left and bot-
tom logs as show in Figure 25. Be sure hole in
middle left log seats over pin in front left log.
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 24 - Installing Bottom Logs
Rear Log
Grate
Prongs
Bottom
Log
Base
Assembly Front Right
Log
Front
Left Log
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119303-01A 17
INSTALLATION
Continued
Figure 26 - Installing Fireplace Screen
Notches
Screws for
Mounting
Screen
Figure 25 - Installing Top Logs
Middle
Right Log
Middle Left Log
Bottom
Log
Pin on Front
Left Log
7. Install replace screen by slipping notches
of replace screen over screws on front of
replace (see Figure 26).
-
OPERATING FIREPLACE
THERMOSTAT MODELS
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
-
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 oor because some gas is heavier than
air and will settle on the oor.
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 neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier, call
the re 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, don’t
try to repair it, call a qualied service tech-
nician or gas supplier. Force or attempted
repair may result in a re or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualied service technician to inspect the
appliance and to replace any part of the
control system and any gas control which
has been under water.
www.desatech.com 119303-01A
18
LIGHTING
INSTRUCTIONS
-
1.
STOP! Read the safety information, page 17.
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise to the
OFF position (see Figure 27).
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 17. 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.
Figure 27 - Control Knob and Ignitor
Button Location
Ignitor Button Control
Knob
OPERATING FIREPLACE
Continued
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, page 19.
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 replace has a safety inter-
lock system. Wait one (1) minute for system
to reset before lighting pilot again.
• If control knob does not pop out when
released, contact a qualied 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 ad-
Figure 28 - Pilot
Ignitor
Electrode Pilot Burner
TO TURN OFF GAS
Turn control knob clockwise to the OFF
position.
Turn control knob clockwise to the
PILOT position.
THERMOSTAT CONTROL
You can set the thermostat control knob to any
comfort level between HI and LO. The thermo-
stat 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.
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119303-01A 19
OPERATING FIREPLACE
Continued
MANUAL LIGHTING
1. Follow steps 1 through 5 under Lighting
Instructions, page 18.
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, page 18.
BLOWER
-
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.
INSPECTING BURNERS
Check pilot ame pattern and burner ame pat-
terns often.
Figure 29 shows a correct pilot ame pattern. Figure
30 shows an incorrect pilot ame pattern. The incor-
rect pilot ame is not touching the thermocouple.
This will cause the thermocouple 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 Ap-
pliance, page 18)
• see Troubleshooting, page 22
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.
Figure 29 - Correct Pilot Flame Pattern
(Propane/LP Shown)
Figure 30 - Incorrect Pilot Flame Pattern
(Propane/LP Shown)
Pilot Burner
Thermocouple
Pilot Burner
Thermocouple
Figure 31 shows correct front burner ame pat-
tern. Figure 32 shows incorrect front burner ame
pattern. The incorrect burner ame pattern shows
yellow tipping at top of blue ame.
-
-
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
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20
If front burner ame pattern is incorrect, as shown
in Figure 32 on page 19
• turn replace off (see To Turn Off Gas to Ap-
pliance, page 18)
• see Troubleshooting, page 22
CLEANING AND
MAINTENANCE
-
INSPECTING BURNERS
Continued
BURNER INJECTOR HOLDER AND
The primary air inlet holes allow the proper amount
of air to mix with the gas. This provides a clean
burning ame. 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 qualied service person.
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust and
dirt. To clean these parts we recommend using
compressed air no greater than 30 PSI. Your local
computer store, hardware store or home center
may carry compressed air in a can. You can use a
vacuum cleaner in the blow position. If using com-
pressed air in a can, please follow the directions on
the can. If you don’t follow directions on the can,
you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burner, pilot and primary air inlet
holes on injector holder for dust and dirt (see
Figure 33).
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
ame indicates dust and dirt in the pilot assembly.
There is a small pilot air inlet hole about two inches
from where the pilot ame comes out of the pilot
assembly (see Figure 34, page 21). 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.
Figure 33 - Injector Holder On Outlet
Burner Tube
Burner
Tube
Primary Air
Inlet Holes
Ports/
Slots
Injector
Holder
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