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

 

 

 -

THERMOSTATICALLY-CONTROLLED MODELS
VSGF28NTF AND VSGF28PTF
UNVENTED (VENT-FREE) GAS FIREPLACE SYSTEM
OWNER’S OPERATION AND INSTALLATION MANUAL



www.desatech.com 119303-01A
2
SAFETY INFORMATION
TABLE OF CONTENTS
Safety Information ............................................... 2
Local Codes......................................................... 4
Product Identication........................................... 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
Specications .................................................... 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
  -
  -
teration, service or main-
 

to this manual for correct
-
   -
tance or additional infor-

  

WARNING: This is an
  -
    
from the room in which


and ventilation air must
Air
for Combustion and Ven-
tilation

-
stalled in an aftermarket*,
 
 
-


     
   
   
   




www.desatech.com
119303-01A 3
WARNING: Do not allow fans



    
   

    



  
    


    -
-

away from hot surfaces to avoid
-



-
dren when they are in the room


    
     -
     

    
-
-

SAFETY INFORMATION
Continued
   
  
chemicals known to the state
of California to cause cancer or
-



   
    

    
   
   



   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 inuence 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

-




www.desatech.com 119303-01A
4
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 qualied 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 qualied 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 qualied 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.

www.desatech.com
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.

www.desatech.com 119303-01A
6
AIR FOR COMBUSTION
AND VENTILATION

     
    -

-


     
  

Today’s homes are built more energy efcient
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 classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned 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 denes a conned 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 unconned 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
unconned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.

www.desatech.com
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
conned or unconned 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 conned 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 unconned
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 unconned.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconned 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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8
VENTILATION AIR

This fresh air would come from an adjoining un-
conned space. When ventilating to an adjoining
unconned 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

www.desatech.com
119303-01A 9
WARNING:Thesemodelshave


-




-
    
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 benecial, 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.

www.desatech.com 119303-01A
10
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
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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".
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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