Desa Comfort Glow SL30NT Quick start guide

(VENT-FREE) NATURAL GAS
STOVE HEATER
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury, or loss of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinityofthisoranyotherappliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical
switch; do not use any phone in
your building.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas sup-
plier, call the fire department.
— Installationandservicemustbeper-
formed by a qualified installer, ser-
vice agency, or the gas supplier.
WARNING:Improperinstallation,adjust-
ment,alteration,service,ormaintenance
can cause injury or property damage.
Refertothismanualforcorrect installa-
tion and operational procedures. For
assistance or additional information
consult a qualified installer, service
agency, or the gas supplier.
WARNING: This is an unvented gas-
fired heater. It uses air (oxygen) from
the room in which it is installed. Provi-
sionsforadequatecombustionandven-
tilation air must be provided. Refer to
AirforCombustionandVentilation sec-
tion on page 4 of this manual.
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate.
This appliance is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Patent Pending
Model SL30NT Series Thermostat Control Gas Log Heater
(Burner System For Cast Iron Stoves)
OWNER’S OPERATION AND INSTALLATION MANUAL
WARNING:TheSL30NTseriesvent-freegas
log heater is only approved for use in the
Comfort Glowseriescastironstovemodels
CISC and CISG.
Save this manual for future reference.
SL30NT

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104463
VENT-FREE NATURAL GAS STOVE HEATER
1. This appliance is only for use with the
typeofgas indicated onthe rating plate.
Thisappliance is notconvertiblefor use
with other gases.
2. 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
• ifyoucannot reach yourgassupplier,
call the fire department
3. This heater shall not be installed in a
bedroom or bathroom.
4. Do not place stove directly on carpet-
ing, vinyl tile, or any combustible ma-
terial other than wood. The stove must
set on a metal or wood panel extending
thefull widthand depthoftheappliance.
5. Do not use this stove as a wood burn-
ing fireplace. Use only model SL30NT
series vent-free gas log heater.
SAFETY
INFORMATION
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, oper-
ate, or service this heater. Im-
proper use of this heater can
causeseriousinjuryordeathfrom
burns, fire, explosion, electrical
shock, and carbon monoxide
poisoning.
CarbonMonoxidePoisoning:Earlysignsof
carbonmonoxidepoisoningresembletheflu,
with headaches, dizziness, or nausea. If you
havethese signs, theheater may notbe work-
ing properly. Get fresh air at once! Have
heater serviced. Some people are more af-
fectedbycarbonmonoxidethanothers.These
includepregnantwomen,peoplewithheartor
lungdisease oranemia,those underthe influ-
ence of alcohol, and those at high altitudes.
Natural Gas: Natural gas is odorless. An
odor-making agent is added to the gas. The
odor helps you detect a gas leak. However,
theodoradded to the gascanfade. Gas may
be present even though no odor exists.
Make certain you read and understand all
warnings.Keepthismanualforreference.It
isyourguidetosafeandproper operationof
this heater.
WARNINGICON G 001 WARNINGS
DANGER: Carbon monoxide
poisoning may lead to death!
6. Do not add extra logs or ornaments
suchaspine cones, vermiculite, or rock
wool. Using these added items can
cause sooting.
7. This logheater is designedto be smoke-
less. If logs ever appear to smoke, turn
off heater and call a qualified service
person. Note: During initial operation,
slight smoking could occur due to log
curing and heater burning manufactur-
ing residues.
8. To prevent the creation of soot, follow
the instructions in Cleaning and Main-
tenance, page 15.
9. Before usingfurniturepolish, wax, car-
pet cleaners, or similar products, turn
heater off. If heated, the vapors from
theseproductsmay create a white pow-
der residue within burner box or on
adjacent walls or furniture.
10. This heater needsfresh,outside air ven-
tilation to run properly. This heater has
an Oxygen Depletion Sensing (ODS)
safety shutoff system. The ODS shuts
down the heater if not enough fresh air
is available. See Air for Combustion
and Ventilation, pages 4 through 6. If
heater keeps shutting off, see Trouble-
shooting, pages 16 through 18.
11. Do not run heater
• where flammable liquids or vapors
are used or stored
• under dusty conditions
12. Do not use this stove to cook food or
burn paper or other objects.
13. Do not use heater if any part has been
exposedtoor under water. Immediately
call a qualified service technician to in-
spectthe room heaterand to replaceany
part of the control system and any gas
control which has been under water.
14. Do not operate heater if any log is bro-
ken. Do not operate heater if a log is
chipped (dime-sized or larger).
15. Turn heater off and let cool before ser-
vicing. Only a qualified service person
should service and repair heater.
16. Operating heater above elevations of
4,500 feet could cause pilot outage.
WARNING: Any change to
this heater or its controls can be
dangerous.
WARNING: Do not allow fans
to blow directly into the stove.
Avoidanydraftsthatalterburner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not ap-
proved for use with this heater.
Due to high temperatures, the
appliance should be located out
oftrafficand away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Stove becomes very hot when
runningheater.Keepchildrenand
adults away from hot surface to
avoid burns or clothing ignition.
Heater will remain hot for a time
after shutdown. Allow surface to
cool before touching.
Carefully supervise young chil-
dren when they are in the room
with fireplace.
Keeptheapplianceareaclearand
free from combustible materials,
gasoline, and other flammable
vapors and liquids.

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104463
OWNER’S MANUAL
LOCAL CODES
Install and use heater with care. Follow all
localcodes.Intheabsenceoflocalcodes,use
the latest edition of The National Fuel Gas
CodeANSZ223.1,alsoknownasNFPA54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
PRODUCT
IDENTIFICATION
Figure 1 - Typical Stove Cabinet Model with Comfort Glow Gas Log Heater
OPERATION
This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
realistic,dancingyellowflames.Thisheater
is designed for vent-free operation. State
and local codes in some areas prohibit the
use of vent-free heaters.
SAFETY PILOT
This heater has a pilot with an Oxygen
Depletion Sensing (ODS) safety shutoff
system.TheODS/pilot is arequiredfeature
for vent-free room heaters. The ODS/pilot
shuts off the heater if there is not enough
fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.
PRODUCT
FEATURES
Stove Body
Stove Door
(Shown in the
open position)
Piezo Ignitor
Control Knob
One Piece
Log Set
Inside Stove
Cavity
Gas Log Heater
Base Assembly

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104463
VENT-FREE NATURAL GAS STOVE HEATER
AIR FOR
COMBUSTION AND
VENTILATION
Today’s homes are built more energy effi-
cient than ever. New materials, increased
insulation, and new construction methods
helpreduceheatlossinhomes.Homeowners
weatherstrip andcaulkaroundwindowsand
doorstokeepthecoldairoutandthewarmair
in. During heating months, home owners
want their homes as airtight as possible.
While it is good to make your home energy
efficient,yourhomeneedstobreathe.Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com-
bustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,and
fuel burning appliances draw air from the
house to operate. You must provide ad-
equate fresh air for these appliances. This
will insure proper venting of vented fuel-
burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from Na-
tional Fuel Gas Code, NFPA 54/ANS
Z223.1, Section 5.3, Air for Combustion
and Ventilation.
Allspacesinhomesfallintooneofthethree
following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 4 through 6 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and win-
dows may provide enough fresh air for
combustion and ventilation. However, in
buildings of unusually tight construction,
you must provide additional fresh air.
Unusually tight construction is de-
fined as construction where:
a. walls and ceilings exposed to the
outside atmosphere have a con-
tinuous water vapor retarder with
a rating of one perm (6 x 10-11 kg
per pa-sec-m2) or less with open-
ings gasketed or sealed and
b. weather stripping has been
added on openable windows and
doors and
c. caulking or sealants are applied
to areas such as joints around
window and door frames, be-
tween sole plates and floors,be-
tween wall-ceiling joints, be-
tween wall panels, at penetra-
tionsforplumbing,electrical,and
gas lines, and at other openings.
If your home meets all of the three
criteria above, you must provide ad-
ditional fresh air. See Ventilation Air
From Outdoors , page 6.
If your home does not meet all of the
three criteria above, proceed to De-
termining Fresh-Air Flow For Heater
Location, page 5.
Confined and Unconfined Space
The National Fuel Gas Code ANS Z223.1
defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000
Btu per hour (4.8 m3per kw) of the aggre-
gate input rating of all appliances installed
in that space and an unconfined space as a
space whose volume is not less than 50
cubicfeetper1,000Btuperhour(4.8m3per
kw) of the aggregate input rating of all
appliances installed in that space. Rooms
communicating directly with the space in
whichtheappliancesareinstalled*,through
openings not furnished with doors, are con-
sidered a part of the unconfined space.
This heater shall not be installed in a con-
fined space or unusually tight construction
unlessprovisions are providedfor adequate
combustion and ventilation air.
*Adjoiningroomsarecommunicatingonly
iftherearedoorlesspassagewaysorventila-
tion grills between them.
WARNING: This heater shall
not be installed in a confined
space or unusually tight con-
struction unless provisions are
provided for adequate combus-
tion and ventilation air. Read
the following instructions to in-
sure proper fresh air for this
and other fuel-burning appli-
ances in your home.

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104463
OWNER’S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this work sheet to determine if you have a confined or unconfined space.
Space:Includestheroominwhichyouwillinstallheaterplusanyadjoiningroomswithdoorlesspassagewaysorventilationgrillsbetween
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 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) =2560 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. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
_________________ (volume of space) ÷50 cu. ft. = (maximum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) ÷50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater ____________________Btu/Hr
Gas water heater* ____________________Btu/Hr
Gas furnace ____________________Btu/Hr
Vented gas heater ____________________Btu/Hr
Gas fireplace 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.
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.
_________________ Btu/Hr (maximum the space can support)
_________________ Btu/Hr (actual amount of Btu/Hr used)
Example: 51,200 Btu/Hr (maximum the space can support)
70,000 Btu/Hr (actual amount of Btu/Hr used)
ThespaceintheaboveexampleisaconfinedspacebecausetheactualBtu/HrusedismorethanthemaximumBtu/Hrthespacecansupport.
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 unconfined space, remove door to adjoin-
ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.
Continued
Example:
Gas water heater 40,000 Btu/Hr
Vent-free heater +30,000 Btu/Hr
Total =70,000 Btu/Hr
WARNING:Iftheareainwhichtheheatermaybeoperatedissmallerthanthatdefinedasanunconfinedspace
or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of
the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3 or applicable local codes.