Desa S39NT Stoves Owner manual

Desa S39NT Stoves Owner manual
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VENT-FREE FREESTANDING PEDESTAL STOVE SYSTEM
OWNER’S OPERATION AND INSTALLATION MANUAL
P
IL O T
S39PT AND S39NT
20,000 TO 39,000 BTU/HR THERMOSTATICALLY- CONTROLLED
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a qualified installer, service agency or the gas supplier.
Save this manual for future reference.
For more information, visit www.desatech.com
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation
and operational procedures. For assistance or additional information consult a qualified installer, service
agency or the gas supplier.
WARNING: This is an unvented gas-fired heater. It uses
air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must
be provided. Refer to Air for Combustion and Ventilation
section on page 5 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
State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the
Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each
purchaser a copy of 527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for bedroom and bathroom installation in the Commonwealth of Massachusetts.
TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identification ........................................... 4
Local Codes ........................................................ 5
Unpacking ........................................................... 5
Product Features ................................................. 5
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 8
Operating Heater ............................................... 16
Inspecting Burners ........................................... 18
Cleaning and Maintenance ................................ 19
2
Specifications .................................................... 20
Service Hints ..................................................... 20
Technical Service .............................................. 20
Replacement Parts ............................................ 20
Troubleshooting ................................................. 21
Parts Centrals .................................................... 25
Illustrated Parts Breakdown and Parts List ....... 26
Accessories ....................................................... 30
Warranty Information ...........................Back Cover
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111417-01B
SAFETY INFORMATION
WARNING: This product contains and/or generates chemicals
known to the State of California
to cause cancer or birth defects
or other reproductive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate or service this fireplace.
Improper use of this fireplace
can cause serious injury or
death from burns, fire, explosion, electrical shock and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs,
the heater may not be working properly. Get fresh
air at once! Have heater serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the influence
of alcohol and those at high altitudes.
Natural and Propane/LP Gas: Natural and propane/LP gases are odorless. An odor-making
agent is added to these gases. The odor helps you
detect a gas leak. However, the odor added to the
gas can fade. Gas may be present even though no
odor exists.
Make certain you read and understand all warnings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
WARNING: Any change to
this stove or its controls can be
dangerous.
WARNING: Do not allow fans
to blow directly into the heater.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the stove.
Heater becomes very hot when
running stove. Keep children
and adults away from hot surface to avoid burns or clothing
ignition. Stove will remain hot
for a time after shutdown. Allow surfaces to cool before
touching.
Carefully supervise young children when they are in the room
with stove.
You must operate this heater
with a heater screen in place.
Make sure heater screen is in
place before running heater.
Keep the appliance area clear
and free from combustible materials, gasoline and other flammable vapors and liquids.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not approved for use with this heater.
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3
Stove
Cabinet
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Logs
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Screen
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PRODUCT
IDENTIFICATION
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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 only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not
use any phone in your building
• immediately call your gas supplier from
a neighborʼs phone. Follow the gas
supplierʼs instructions
• if you cannot reach your gas supplier, call
the fire department
4. This heater shall not be installed in a bedroom
or bathroom.
5. Do not use this heater as a wood-burning
heater. Use only the logs provided with the
heater.
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 heater.
After servicing, always replace screen before
operating heater.
7. You must operate this heater with the heater
screen in place. Make sure heater screen is in
place before running heater.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 19.
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 heater needs fresh air ventilation 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, page 5. If heater keeps shutting
off, see Troubleshooting, page 21.
11. Do not run heater
• where flammable liquids or vapors are
used or stored.
• under dusty conditions.
12. Do not use this heater to cook food or burn
paper or other objects.
13. Do not use heater if any part has been under
water. Immediately call a qualified service
technician to inspect the room heater and to
replace any part of the control system and any
gas control which has been under water.
14. Turn off and unplug heater and let cool before
servicing. Only a qualified service person
should service and repair heater.
15. Operating heater above elevations of 4,500
feet could cause pilot outage.
16. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dimesized or larger).
17. To prevent performance problems, do not use
propane/LP fuel tank of less than 100 lbs.
capacity (propane/LP only).
18. Provide adequate clearances around air
openings.
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Continued
IL O T
SAFETY INFORMATION
Heater Controls
(Inside Door)
Figure 1 - Vent-Free Gas Pedestal Stove
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111417-01B
LOCAL CODES
Install and use heater 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
This heater is designed for vent-free operation.
State and local codes in some areas prohibit the
use of vent-free heaters.
UNPACKING
1.
2.
3.
4.
5.
6.
Remove top inner pack.
Tilt carton so that stove is upright.
Remove protective side packaging.
Slide stove out of carton.
Remove protective plastic wrap.
Remove screen by lifting and then pulling
forward.
7. Remove log set by cutting plastic ties.
8. Carefully unwrap log.
9. Check for any shipping damage. If stove or
log is damaged, promptly inform dealer where
you bought stove.
PRODUCT FEATURES
SAFETY PILOT
This heater 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 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.
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
not be installed in a confined
space or unusually tight construction unless provisions are
provided for adequate combustion and ventilation air. Read the
following instructions to insure
proper fresh air for this and
other fuel-burning appliances
in your home.
Todayʼs homes are built more energy efficient
than ever. New materials, increased insulation and
new construction methods help reduce heat loss
in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out
and the warm air in. During heating months, home
owners want their homes as airtight as possible.
While it is good to make your home energy efficient,
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, fireplaces, clothes dryers and fuel
burning appliances draw air from the house to
operate. You must provide adequate fresh air for
these appliances. This will insure proper venting
of vented fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3,
Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on pages 5 through 7 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion and
ventilation. However, in buildings of unusually
tight construction, you must provide additional
fresh air.
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5
AIR FOR COMBUSTION
AND VENTILATION
Continued
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the outside atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10-11 kg per pa-sec-m2) or
less with openings gasketed or sealed
and
b. weather stripping has been added on
openable windows and doors and
c. caulking or sealants are applied to
areas such as joints around window
and door frames, between sole plates
and floors, between wall-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.
If your home meets all of the three criteria
above, you must provide additional fresh air.
See Ventilation Air From Outdoors, page 7.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Heater Location.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu
per hour (4.8 m3 per kw) of the aggregate input
rating of all appliances installed in that space and
an unconfined space as a space whose volume is
not less than 50 cubic feet per 1,000 Btu per hour
(4.8 m3 per kw) of the aggregate 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
unconfined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Use this work sheet to determine if you have a
confined or unconfined space.
Space: Includes the room in which you will install
heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.
6
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) = 2,560 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 = (Maximum Btu/Hr the space can support)
Example: 2,560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in
the space.
Vent-free fireplace
__________ 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.
Example:
30,000
Gas water heater
__________
Btu/Hr
39,000
Vent-free fireplace
+ __________
Btu/Hr
69,000
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: 51,200 Btu/Hr (maximum the space
can support)
69,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the example is a confined space because
the actual Btu/Hr used is more than the maximum
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 adjoining room. If the extra space provides an unconfined
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building, page 7.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 7.
C. Install a lower Btu/Hr fireplace, if lower Btu/Hr
size makes room unconfined.
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111417-01B
AIR FOR COMBUSTION
AND VENTILATION
Continued
If the actual Btu/Hr used is less than the maximum
Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air
ventilation.
WARNING: If the area in
which the heater may be operated is smaller than that defined
as an unconfined space or if the
building is of unusually tight
construction, provide adequate
combustion and ventilation air
by one of the methods described
in the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 Section 5.3
or applicable local codes.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12"
of the floor. Connect these items directly to the
outdoors or spaces open to the outdoors. These
spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostatcontrolled power vent. Heated air entering the attic
will activate the power vent.
Outlet
Air
Outlet
Air
Ventilated
Attic
To Attic
To
Crawl
Space
Inlet
Air
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining
unconfined space, you must provide two permanent
openings: one within 12" of the ceiling and one
within 12" of the floor on the wall connecting the
two spaces (see options 1 and 2, Figure 2). You
can also remove door into adjoining room (see
option 3, Figure 2). 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.
Inlet Air
Ventilated
Crawl Space
Figure 3 - Ventilation Air from Outdoors
12"
Ventilation
Grills
Into Adjoining
Room,
Option 1
Ventilation Grills
Into Adjoining Room,
Option 2
Or
Remove
Door into
Adjoining
Room,
Option
3
12"
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Figure 2 - Ventilation Air from Inside
Building
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7
INSTALLATION
NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your primary heat source. If you have a
central heating system, you may
run system’s circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
WARNING: A qualified service person must install heater.
Follow all local codes.
WARNING: Never install the
heater
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture, clothing or other flammable objects
are less than 42 inches from the
front, top or sides of the heater
• in high traffic areas
• in windy or drafty areas
CAUTION: This heater creates warm air currents. These
currents move heat to wall surfaces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.
8
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is beneficial, installing heater
in rooms without enough ventilation air may cause
mildew to form from too much moisture. See Air
for Combustion and Ventilation, page 5.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install heater. Call dealer where you bought
heater for proper type heater.
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
is not permitted.
CLEARANCES TO COMBUSTIBLES
(Vent-Free Operation Only)
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling and adjoining side
and back walls.
Carefully follow the instructions below. This stove
is a freestanding unit designed to set directly on the
floor. IMPORTANT: You must maintain minimum
wall and ceiling clearances during installation. The
minimum clearances are shown in Figure 4, page 9.
Measure from outermost point of stove top.
Minimum Wall and Ceiling Clearances
(see Figure 4, page 9)
A. Clearances from outermost point of stove top
to any combustible side wall should not be
less than 12 inches.
B. Clearances from outermost point of stove top
to any combustible back wall should not be less
than 6 inches (Includes corner installations).
C. Clearances from the stove top to the ceiling
should not be less than 48 inches.
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INSTALLATION
CONNECTING TO GAS SUPPLY
Continued
Front View
WARNING: A qualified service person must connect heater
to gas supply. Follow all local
codes.
Ceiling
48"
Minimum
Side
Wall
12"
Minimum
Side
Wall
12"
Minimum
CAUTION: Never connect
propane/LP heater directly to the
propane/LP supply. This heater
requires an external regulator
(not supplied). Install the external regulator between the heater
and propane/LP supply.
Back Wall
Top View
6"
Minimum
12 "
Minimum
12 "
Minimum
Side
Wall
Side
Wall
Corner
Wall
Top View
6"
Minimum
Front of
Stove
Unit
Wall
6"
Minimum
Ceiling
Side View
48"
Minimum
WARNING: Never connect
natural gas heater to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
Installation Items Needed
Before installing heater, make sure you have the
items listed below.
• external regulator - propane/LP only (supplied
by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certified equipment shutoff valve from your
dealer. See Accessories, page 30.
Back Wall
Front of
Stove
Unit
6"
Minimum
Floor
Figure 4 - Minimum Clearance to Walls
and Ceiling
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9
INSTALLATION
Continued
For propane/LP units, the installer must supply
an external regulator. The external regulator will
reduce incoming gas pressure. You must reduce
incoming gas pressure to between 11 and 14 inches
of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install
external regulator with the vent pointing down as
shown in Figure 6. Pointing the vent down protects
it from freezing rain or sleet.
CAUTION: Use only new,
black iron or steel pipe. Internally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of
1/2" diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
volume will occur.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
We recommend that you install a sediment trap in
supply line as shown in Figure 7. Locate sediment
trap where it is within reach for cleaning. Install
in piping system between fuel supply and heater.
Locate sediment trap where trapped matter is not
likely to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into
heater controls. If sediment trap is not installed or
is installed wrong, heater may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator
with wrench when connecting it
to gas piping and/or fittings.
Propane/LP
Supply Tank
External
Regulator
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 heater (see Figure 7).
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.
Apply pipe joint sealant lightly to male NPT
Ceiling
threads. This
will prevent excess sealant from
going into pipe. Excess sealant in pipe could result
in clogged heater valves.
Back View
Vent
Pointing
Down
Figure 6 - External Regulator With Vent
Pointing Down
Natural Gas
From Gas Meter (5" W.C.**
to 10.5" W.C. Pressure)
CSA DesignPropane/LP
Certified
From External Regulator
Equipment
(11" W.C.**
Shutoff Valve
to 14" W.C.
With 1/8"
Pressure)
NPT Tap*
Back Wall
48"
Minimum
Side View
Front of
Stove
Unit
6"
Minimum
Gas Regulator
Inlet Connection
Figure 5
- Gas Regulator Location and
Floor
Gas Line Access Into Stove Cabinet
10
3" Approved
Min. Flexible
Gas Hose (if
Tee Pipe Cap allowed by
Gas
Joint Nipple
local codes) Regulator
of Heater
Sediment Trap
Figure 7 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 30.
** Minimum inlet pressure for purpose of input
adjustment.
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111417-01B
INSTALLATION
Continued
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak detection fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: Make sure external regulator has been installed
between propane/LP supply and
heater. See guidelines under Connecting to Gas Supply, page 9.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect heater with its appliance main gas
valve (control valve) and equipment shutoff
valve from gas supply piping system. Pressures in
excess of 1/2 psig will damage heater 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 a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve to
gas supply. Check reconnected fittings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 8).
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.
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3. Check all joints from gas meter to equipment
shutoff valve (see Figures 9 or 10). Apply a
noncorrosive leak detection fluid to all joints.
Bubbles forming show a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 8).
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 heater is in the OFF
position.
4. Check all joints from equipment shutoff valve
to control valve (see Figures 9 or 10). Apply a
noncorrosive leak detection fluid to all joints.
Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater, page 16).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appliance, page 17).
Open
Equipment
Shutoff
Valve
Closed
Figure 8- Equipment Shutoff Valve
Equipment Shutoff Valve
Propane/LP
Supply
Tank
Control Valve
Location
Figure 9 - Checking Gas Joints for
Propane/LP Gas
Equipment
Shutoff Valve
Gas Meter
Control Valve Location
Figure 10 - Checking Gas Joints for
Natural Gas
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11
INSTALLATION
One Piece
Log Set
Burner Ports
Continued
INSTALLING LOGS
WARNING: Failure to position the parts in accordance
with these diagrams or failure
to use only parts specifically
approved with this heater may
result in property damage or
personal injury.
CAUTION: After installation and periodically thereafter,
check to ensure that no flame
comes in contact with any log.
With the heater set to HI, check
to see if flames contact any log. If
so, reposition logs according to
the log installation instructions
in this manual. Flames contacting logs will create soot.
It is very important to install the logs exactly as
instructed. Do not modify logs. Only use logs
supplied with heater.
Place one-piece log set on grate to fit as illustrated
in Figure 11. Make sure log sits flat on firebox floor
(see Figure 11).
IMPORTANT: Make sure log does not cover any
burner ports (see Figure 12).
Figure 12 - Installing One-Piece Log set
(Top View)
INSTALLING OPTIONAL BLOWER
ACCESSORY GA3750
Tools required: Phillips screwdriver
NOTICE: Shut off gas heater
during the following blower
installation.
1. Remove 2 screws from rear tabs on top trim.
Pull trim forward to remove (see Figure 13).
2. Remove top panel of stove by removing three
screws from under top lip on each side of stove
(see Figure 13).
3. Facing front of stove, carefully slide top panel
forward until it is completely removed from
stove (see Figure 14).
Top Panel
Screws
Top Trim
I
O
FF
O
O
N
L
H
One
Piece
Log Set
P
IL O T
Figure 13 - Removing Stove Top Panel
Bushing
H
I
O
FF
O
O
N
L
P
IL O T
Firebox Floor
Figure 11 - Installing One-Piece Log Set
12
Figure 14 - Installing Bushing
www.desatech.com
111417-01B
INSTALLATION
Continued
4. Install one plastic bushing provided in blower
kit into the 1 1/2" hole in the left rear of firebox
floor. Access hole through the rectangular
opening in the rear panel (see Figure 15).
5. Disconnect power cord wires from blower
motor (if connected) (see Figure 15).
6. Disconnect green ground wire from blower
housing (if connected) by removing screw
holding wire terminal (see Figure 15).
7. Remove the two blower mounting brackets
from the rear panel by removing two screws
each (see Figure 16).
8. Attach the two mounting brackets to blower
housing using four screws provided in
blower kit (2 for each bracket) (see Figure
16). Tighten screws securely. Place blower
assembly temporarily on top of firebox.
White
Powercord
Wire
Black
Powercord
Wire
9. Working from the rear of the stove, place entire
power cord, including speed control housing,
in lower control compartment.
10. Route ends of 3-wire power cord up from the
lower control compartment through the plastic
bushing, then up to the upper cavity of stove
(see Figure 17).
11. Attach the terminal ends of the white and
black power cord wires to the terminals on
the blower motor (see Figure 14, page 12).
Push firmly.
12. Attach the terminal end of the green power cord
wire to the front tab of the blower housing using
screw provided (see Figure 14, page 12).
13. Using the four screws previously removed,
mount blower assembly to stove by reattaching blower brackets to rear panel (see Figure
16). Tighten screws securely.
14. Install plastic control knob onto output shaft of
speed control housing (see Figure 17). Place
speed control housing just inside control compartment door in front of stove (see Figure 18,
page 14).
Power
Cord
Screw
Green Ground Wire
Figure 15 - Removing Wires from Blower
Screws
Blower
Blower
Bracket
Speed Control
Control Housing
Knob
WARNING: Never attempt to service heater while it is plugged
in, operating or hot. Burns and electrical shock could result. Only a
qualified service person should service or repair heater.
Firebox
Top
Screws
If any of the original wire as supplied with the appliance must be replaced, it must
be replaced with 105°C wire or itʼs equivalent.
WARNING: Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous operation.
Verify proper operation after servicing.
Variable
Fan Switch
120 Vac.
60 Hz. .
78 Amps
On
Black
Black
Black
Off
110/115
V.A.C.
Green
White
Figure 16 - Removing Blower Brackets
from Stove and Attaching to Blower
111417-01B
DESA Heating Products, Bowling Green, KY
Black
Blower
Motor
White
101584-05
Wiring Diagram Decal
Figure 17 - Routing Power Cord
www.desatech.com
13
INSTALLATION
INSTALLING OPTIONAL BLOWER
ACCESSORY GA3650TA
Continued
15. Using two screws provided in blower kit,
mount blower speed control housing to mounting tab in left side of lower control compartment (see Figure 18).
16. Check to make sure that the power cord is
completely clear of blower wheel and there
are no foreign objects in blower wheel.
17. Carefully replace stove top panel. Align holes
and replace six screws removed in step 2, page
12. Slide top trim onto top panel. Attach with
2 screws removed in step 1, page 12.
18. Peel off the backing paper and stick the supplied wiring diagram decal on the stove floor
as shown in Figure 17, page 13.
19. Plug power cord into a convenient 3-prong
grounded wall receptacle near the stove.
20. Using speed control knob, turn blower on and
check for operation.
21. All remaining parts from blower kit may be
discarded.
WARNING: ELECTRICAL
GROUNDING INSTRUCTIONS
This appliance is equipped with a
three-prong (grounding) plug for
your protection against shock
hazard and should be plugged
directly into a properly grounded
three-prong receptacle.
Blower Speed
Control Housing
Figure 18 - Installing Blower Control
Housing
Tools required: Phillips screwdriver
NOTICE: Shut off gas heater
during the following blower
installation.
1. Remove 2 screws from rear tabs on top trim.
Pull trim forward to remove (see Figure 13,
page 12).
2. Remove three screws from under top lip on
each side of stove to remove top panel (see
Figure 13, page 12).
3. Facing front of stove, carefully slide top panel
forward until it is completely removed from
stove (see Figure 13, page 12).
6. Install one plastic bushing provided in blower
kit into the 1 1/2" hole in the left rear of firebox
floor. Access hole through the rectangular opening in the rear panel (see Figure 14, page 12).
4. Disconnect power cord wires from blower motor (if connected) (see Figure 15, page 13).
5. Disconnect green ground wire from blower
housing (if connected) by removing screw holding wire terminal (see Figure 15, page 13).
7. Remove the two blower mounting brackets
from the rear panel by removing two screws
each (see Figure 16, page 13).
8. Attach the two mounting brackets to blower
housing using four screws provided in blower
kit (2 for each bracket) (see Figure 16, page
13). Tighten screws securely. Place blower
assembly temporarily on top of firebox.
9. If screen is installed, carefully lift slightly and
pull forward to remove.
10. If logs are installed, carefully remove and set
aside.
11. Remove three screws and cover plate from
center of firebox back panel. Keep screws but
discard cover plate (see Figure 19).
Cover
Plate
Screws
Firebox Back Panel
Figure 19 - Removing Cover Plate
14
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111417-01B
INSTALLATION
Continued
12. Locate thermostatic switch/cover plate assembly and wire harness supplied with blower.
Attach wire harness terminals to terminals on
thermostatic switch. Push firmly. Make sure
the bottom hole of cover is on the opposite
side from the wire harness (see Figure 20).
13. Feed terminal ends of wire harness into the
hole in firebox back panel from front of firebox. Pull the ends of the harness to the top of
firebox near blower (see Figure 21).
14. Align holes in the switch/cover assembly with
holes in firebox back panel. Using 3 screws
from step 11, attach assembly to firebox back
panel. Tighten screws firmly (see Figure 21).
15. Working from the rear of the stove, place
entire power cord, including speed control
housing, in lower control compartment (see
Figure 22).
16. Route ends of 3-wire power cord up from the
lower control compartment through the plastic
bushing, then up to the upper cavity of stove
(see Figure 22).
Thermostatic
Switch Mounted
to Cover
17. Connect white wire from speed control to
either terminal on blower motor (see Figure
22). Push firmly.
18. Connect the black wire from speed control
to blue wire on switch/cover assembly (see
Figure 22).
19. Connect red wire from switch/cover assembly
to remaining terminal on blower motor (see
Figure 22). Push firmly.
20. Attach green wire from speed control to front
tab of blower housing using screw provided
(see Figure 22). Tighten securely.
21. Using the four screws previously removed,
mount blower assembly to stove by reattaching blower brackets to rear panel (see Figure
16, page 13). Tighten screws securely.
Green
Ground Wire
Blower
Black Speed Control Wire
White Speed
Control Wire
Power
Cord
Ground
Wire
Screw Red
Blue
Switch
Wire
Switch
Wire
Bottom Hole
Wire Harness
Wiring
Diagram
Decal
Figure 20 - Attaching Wire Harness to
Thermostatic Switch and Cover Assembly
Wire Harness
Hole in
Firebox
Back
Panel
Thermostatic
Switch
Mounted to
Cover
Control Speed Control
Knob
Housing
WARNING: Never attempt to service heater while it is plugged
in, operating or hot. Burns and electrical shock could result. Only
a qualified service person should service or repair heater.
If any of the original wire as supplied with the appliance must be replaced,
it must be replaced with 105°C wire or itʼs equivalent.
WARNING: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
Wire
Harness
Variable
Fan Switch
120 Vac.
60 Hz.
90 Amps
Off
DESA Heating Products,
Bowling Green, KY
Figure 21 - Assembling Thermostatic
Switch and Cover to Firebox Back Panel
111417-01B
2
Fan Switch
(N.O.)
Black
On
Blue
Red
110/115
V.A.C.
Screws
1
Black
Green
White
Blower
Motor
Figure 22 - Connecting Switch, Blower
and Speed Control Wires
www.desatech.com
15
INSTALLATION
OPERATING HEATER
Continued
22. Install plastic control knob onto output shaft
of speed control housing (see Figure 22, page
15). Place speed control housing just inside
control compartment door in front of stove
(see Figure 18, page 14).
23. Using two screws provided in blower kit,
mount blower speed control housing to mounting tab in left side of lower control compartment (see Figure 18, page 14 ).
24. Check to make sure that the power cord is
completely clear of blower wheel and there
are no foreign objects in blower wheel.
25. Carefully replace stove top panel. Align holes
and replace six screws removed in step 2, page
14. Slide top trim over tip panel. Attach with
2 screws removed in step 1, page 14.
26. Peel off the backing paper and stick the supplied wiring diagram decal on the stove floor
as shown in Figure 22, page 15.
27. Plug power cord into a convenient 3-prong
grounded wall receptacle near the stove.
28. Using speed control knob, turn blower on and
check for operation.
29. Install logs (see Installing Logs, page 12).
30. Install screen assembly by aligning keyhole
slots in screen assembly and shoulder screws
on stove. Push back and down to secure.
31. All remaining parts from blower kit may be
discarded.
Note: If any of the original wire, as supplied with
the appliance, must be replaced, it must be replaced
with 105°C wire or itʼs equivalent.
WARNING: ELECTRICAL
GROUNDING INSTRUCTIONS
This appliance is equipped with a
three-prong (grounding) plug for
your protection against shock
hazard and should be plugged
directly into a properly grounded
three-prong receptacle.
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result
causing property damage, personal injury or loss of life.
A. This appliance has a pilot which must be
lighted by hand. When lighting the pilot,
follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not
use any phone in your building.
• Immediately call your gas supplier
from a neighborʼs phone. Follow the
gas supplierʼs instructions.
• If you cannot reach your gas supplier,
call the fire department.
C. Use only your hand to push in or turn the
gas control knob. Never use tools. If the
knob will not push in or turn by hand, donʼt
try to repair it, call a qualified service technician or gas supplier. Force or attempted
repair may result in a fire or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualified service technician to inspect the
appliance and to replace any part of the
control system and any gas control which
has been under water.
LIGHTING
INSTRUCTIONS
NOTICE: During initial operation
of new heater, burning logs will
give off a paper-burning smell.
Orange flame will also be present. Open a window to vent smell.
This will only last a few hours.
1. STOP! Read the safety information above.
2. Make sure equipment shutoff valve is fully open.
3. Turn control knob clockwise
to the
OFF position.
16
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111417-01B
OPERATING HEATER
Pilot Burner
Continued
Thermocouple
4. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP! Follow “B” in the
safety information, column 2, page 16. If
you donʼt smell gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press in control
knob for five (5) seconds (see Figure 23).
Note: You may be running this heater for
the first time after hooking up to gas supply. If so, the control knob may need to be
pressed in for 30 seconds or more. This will
allow air to bleed from the gas system.
6. With control knob pressed in, press and
release ignitor button. This will light pilot.
The pilot is attached to the front burner. If
needed, keep pressing ignitor button until
pilot lights.
Note: If pilot does not stay lit, contact a
qualified service person or gas supplier for
repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure.
7. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob.
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 3
through 7. This heater has a safety interlock
system. Wait one (1) minute for system to
reset before lighting pilot again.
8. Turn control knob counterclockwise
to desired heating level. The burners should
light. Set control knob to any heat level
between HI and LO.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
Ignitor Button
Figure 24 - Pilot
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise
position.
to the OFF
Shutting Off Burners Only (pilot stays lit)
to the
Turn control knob clockwise
PILOT position.
THERMOSTAT CONTROL
OPERATION
The thermostat control knob can be set to any
comfort level between HI and LO. The thermostat will gradually modulate the heat output
and flame height from higher to lower settings
or pilot, in order to maintain the comfort level
you select. The ideal comfort setting will vary
by household depending upon the amount of
space to be heated, the output of the central
heating system, etc.
Note: Selecting the HI setting with the control
knob will cause the burners to remain fully on,
without modulating down in most cases.
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting
Instructions, starting on page 16.
2. Depress control knob and light pilot with
match.
3. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob. Now follow step 8 under
Lighting Instructions, column 1.
Control Knob
Figure 23 - Control Knob and Ignitor
Button Location
111417-01B
www.desatech.com
17
OPERATING HEATER
Pilot Burner
Thermocouple
Continued
OPERATING OPTIONAL
BLOWER ACCESSORY
Light your gas appliance with the blower off.
Turn the blower on to deliver heated air at the
top louvers. The blower features a variable
control which allows you to select the speed
you desire.
If Using the GA3650TA Blower Accessory:
In the ON position, the blower will start when the
thermostat senses a sufficient increase in firebox
temperature (approximately 10 to 20 minutes
depending on heat setting). Note: Your gas stove
and thermostat blower will not turn on and off
at the same time. The stove may run for several
minutes before the blower turns on. After the
heater modulates to the pilot position, the blower
will continue to run. The blower will shut off
after the firebox temperature decreases.
Note: It is safe to operate stove with blower
turned off. However, the blower helps distribute
heated air from the stove.
Note: Periodically check the louvers of the
firebox and remove any dust, dirt or other
obstructions.
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 25 shows a correct pilot flame pattern.
Figure 26 shows an incorrect pilot flame pattern.
The incorrect pilot flame is not touching the
thermocouple. This will cause the thermocouple
to cool. When the thermocouple cools, the heater
will shut down.
If pilot flame pattern is incorrect, as shown in
Figure 26
• turn heater off (see To Turn Off Gas to Appliance, page 17)
• see Troubleshooting, page 21
Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue and
have no yellow or orange color.
18
Figure 25 - Correct Pilot Flame Pattern
(Propane/LP Shown)
Pilot Burner
Thermocouple
Figure 26 - Incorrect Pilot Flame Pattern
(Propane/LP Shown)
BURNER FLAME PATTERN
Figure 27 shows a correct burner flame pattern.
Figure 27 shows an incorrect burner flame pattern.
If burner flame pattern is incorrect,
• turn heater off (see To Turn Off Gas to Appliance, page 17)
• see Troubleshooting, page 21
Approx.
3-6"
Above
Top of
Logs
Figure 27 - Correct Flame Pattern with
Control Knob Set to High Flame.
More
Than 8"
Above
Top of
Logs
Figure 28 - Incorrect Flame Pattern with
Control Knob Set to High Flame
www.desatech.com
111417-01B
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and circulating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a
qualified service person. Heater
may need more frequent cleaning due to excessive lint from
carpeting, bedding material, pet
hair, etc.
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
BURNER INJECTOR HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper
amount of air to mix with the gas. This provides
a clean burning flame. Keep these holes clear of
dust, dirt, lint and pet hair. Clean these air inlet
holes prior to each heating season. Blocked air
holes will create soot. We recommend that you
clean the unit every three months during operation
and have heater inspected yearly by a qualified
service person.
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust and
dirt. To clean these parts we recommend using
compressed air no greater than 30 PSI. Your local
computer store, hardware store or home center
may carry compressed air in a can. You can use a
vacuum cleaner in the blow position. If using compressed 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 29).
111417-01B
3. Blow air through the ports/slots and holes in
the burner.
4. Check the injector holder located at the end
of the burner tube again. Remove any large
particles of dust, dirt, lint or pet hair with a
soft cloth or vacuum cleaner nozzle.
5. Blow air into the primary air holes on the
injector holder.
6. In case any large clumps of dust have now been
pushed into the burner repeat steps 3 and 4.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot assembly. There is a small pilot air inlet hole about
two inches from where the pilot flame comes out
of the pilot assembly (see Figure 30). 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.
Injector
Holder
Burner
Tube
Primary Air
Inlet Holes
Figure 29 - Injector Holder On Outlet
Burner Tube
Burner
Tube
Ports/
Slots
Pilot Assembly
Pilot Air
Inlet Hole
Figure 30 - Pilot Inlet Air Hole
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19
CLEANING AND
MAINTENANCE
Continued
CABINET
Air Passageways
Use a vacuum cleaner or pressurized air to
clean.
Exterior
Use a soft cloth dampened with a mild soap and
water mixture. Wipe the cabinet to remove dust.
LOGS
• If you remove logs for cleaning, refer to Installing Logs, page 12, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame holes
should be open with yellow flame present. All
round burner flame holes should be open with a
small blue flame present. Some burner flame holes
may become blocked by debris or rust, with no
flame present. If so, turn off heater and let cool.
Remove blockage. Blocked burner flame holes
will create soot.
SPECIFICATIONS
S39PT
S39NT
Btu (Variable) 20,000/39,000 20,000/39,000
Type Gas
Propane/LP Only Natural Only
Ignition
Piezo
Piezo
Manifold Pressure 8" W.C.
3.5" W.C.
Inlet Gas Pressure (in. of water) *
Maximum
14"
10.5"
Minimum
11"
5"
Dimensions, Inches (H x W x D)
31 x 32 x 19 1/4 31 x 32 x 19 1/4
Stove
Carton
24 x 31 1/2 x 35 1/4 24 x 31 1/2 x 35 1/4
Weight, pounds
Stove
78 lbs.
78 lbs.
Shipping
95 lbs.
95 lbs.
* For purposes of input adjustment
20
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, contact your local propane/LP or natural gas supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation or troubleshooting. If so, contact DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040. When calling please have your
model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ technical services web site at www.desatech.com.
REPLACEMENT PARTS
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If
they canʼt supply original replacement part(s),
call DESA Heating Productsʼ Technical Service
Department at 1-866-672-6040 for referral information.
When calling DESA Heating Products, have
ready
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the
factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product or Parts
Central (see page 24). If they canʼt supply original
replacement part(s), call DESA Heating Products
at 1-866-672-6040 for referral information.
When calling DESA Heating Products, have
ready
• model number of your heater
• the replacement part number
www.desatech.com
111417-01B
TROUBLESHOOTING
WARNING: Turn off and unplug heater and let cool before servicing.
Only a qualified service person should service and repair heater.
CAUTION: Never use a wire, needle or similar object to clean
ODS/pilot. This can damage ODS/pilot unit.
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
When ignitor button is pressed,
there is no spark at ODS/pilot
1. Ignitor electrode not connected to ignitor cable
2. Ignitor cable pinched or wet
1. Reconnect ignitor cable
3. Piezo ignitor nut is loose
4.
5.
6.
7.
When ignitor button is pressed,
there is spark at ODS/pilot but
no ignition
Broken ignitor cable
Bad piezo ignitor
Ignitor electrode broken
Ignitor electrode positioned
wrong
1. Gas supply turned off or equipment shutoff valve closed
2. Control knob not in PILOT
position
3. Control knob not pressed in
while in PILOT position
4. Air in gas lines when installed
5. Depleted gas supply (propane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
111417-01B
www.desatech.com
2. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry
3. Tighten nut holding piezo ignitor to base panel of log set. Nut
is located behind base panel
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
7. Replace pilot assembly
1. Turn on gas supply or open
equipment shutoff valve
2. Turn control knob to PILOT
position
3. Press in control knob while in
PILOT position
4. Continue holding down control knob. Repeat igniting operation until air is removed
5. Contact local propane/LP gas
company
6. Clean ODS/pilot (see Cleaning
and Maintenance, page 19) or
replace ODS/pilot assembly
7. Replace gas control
21
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
ODS/pilot lights but flame ODS/
pilot lights but flame goes out
when control knob is released
1. Control knob not fully pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. Pilot flame not touching
thermocouple, which allows
thermocouple to cool, causing pilot flame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
5. Thermocouple connection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
1. Press in control knob fully
2. After ODS/pilot lights, keep control knob pressed in 30 seconds
3. Fully open equipment shutoff
valve
4. A) Contact local natural or
propane/LP gas company
1. Burner orifice clogged
1. Clean burner (see Cleaning
and Maintenance, page 19) or
replace burner orifice
2. Contact local natural or propane/LP gas company
3. Reconnect leads (see wiring
diagram)
4. Replace battery in transmitter
and receiver
Burner does not light after ODS/
pilot is lit
2. Inlet gas pressure is too low
3. Thermopile leads disconnected or improperly connected
4. Burners will not come on in
remote position
Delayed ignition burner
1. Manifold pressure is too low
2. Burner orifice clogged
Burner backfiring during combustion
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
Slight smoke or odor during
initial operation
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing
processes and logs curing
22
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B) Clean ODS/pilot (see
Cleaning and Maintenance,
page 19) or replace ODS/pilot
assembly
5. Hand tighten until snug, then
tighten 1/4 turn more
6. Replace pilot assembly
7. Replace control valve
1. Contact local natural or propane/LP gas company
2. Clean burner (see Cleaning
and Maintenance, page 19) or
replace burner orifice
1. Clean burner (see Cleaning
and Maintenance, page 19) or
replace burner orifice
2. Replace damaged burner
3. Replace gas control
1. Check burner for dirt and
debris. If found, clean burner
(see Cleaning and Maintenance, page 19)
2. Replace gas control
3. Problem will stop after a few
hours of operation
111417-01B
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Moisture/condensation noticed
on windows
1. Not enough combustion/ventilation air
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
Heater produces a whistling noise
when burner is lit
1. Turning control knob to
HI position when burner is
cold
2. Air in gas line
1. Turn control knob to LO
position and let warm up for
a minute
2. Operate burner until air is
removed from line. Have gas
line checked by local natural
or propane/LP gas company
3. Observe minimum installation
clearances (see page 8)
4. Clean burner (see Cleaning
and Maintenance, page 19) or
replace burner orifice
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orifice
Dark residue on logs or inside
of stove
1. Improper log placement
2. Drafts or other air currents
affecting flame pattern
3. Air holes at burner inlet
blocked
4. Burner flame holes blocked
1. Properly locate logs (see Installing Logs, page 12)
2. Eliminate source of drafts
around heater
3. Clean out air holes at burner
inlet. Periodically repeat as
needed
4. Remove blockage
White powder residue forming
within burner box or on adjacent
walls or furniture
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
Heater produces a clicking/ticking noise just after burner is lit
or shut off
1. Metal expanding while heating or contracting while
cooling
1. This is common with most heaters. If noise is excessive, contact
qualified service person
111417-01B
www.desatech.com
23
TROUBLESHOOTING
Continued
WARNING: If you smell gas
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint,
paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These
fumes may mix with combustion air and create odors. These odors will disappear over time.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Heater produces unwanted
odors
1. Heater burning vapors from
paint, hair spray, glues, cleaners, chemicals, new carpet,
etc. (See IMPORTANT statement above)
2. Gas leak. See Warning
statement at top of page
1. Open window and ventilate
room. Stop using odor causing products while heater is
running
1. Not enough fresh air is available
2. Low line pressure
1. Open window and/or door for
ventilation
2. Contact local natural or propane/LP gas company
3. Clean ODS/pilot (see Cleaning
and Maintenance, page 19)
Heater shuts off in use (ODS
operates)
3. O D S / p i l o t i s p a r t i a l l y
clogged
Gas odor even when control knob
is in OFF position
1. Gas leak. See Warning
statement at top of page
2. Control valve defective
2. Locate and correct all leaks
(see Checking Gas Connections, page 11)
1. Locate and correct all leaks
(see Checking Gas Connections, page 11)
2. Replace control valve
Gas odor during combustion
1. Foreign matter between control valve and burner
2. Gas leak. See Warning
statement at top of page
1. Take apart gas tubing and
remove foreign matter
2. Locate and correct all leaks
(see Checking Gas Connections, page 11)
Burner flame is excessively large
and is very near or touches the
top of firebox
1. Excessive line or manifold
pressure
2. Dirty primary air holes
1. Check manifold pressure and
correct as needed
2. Clean burner air holes (see
Cleaning and Maintenance,
page 19)
24
www.desatech.com
111417-01B
PARTS CENTRALS
These Parts Centrals are privately owned businesses. They have agreed to support our customerʼs needs
by providing original replacement parts and accessories.
Tools & Equipment Co.
5 Manila Ave
Hamden, CT 06514-0322
1-800-397-7553
203-248-7553
Portable Heater Parts
342 N. County Rd. 400 East
Valparaiso, IN 46383-9704
219-462-7441
1-888-619-7060
www.portableheaterparts.com
sales@portableheaterparts.com
techservice@portableheaterparts.com
FBD
1349 Adams Street
Bowling Green, KY 42103-3414
270-846-1199
1-800-654-8534
Fax: 1-800-846-0090
franktalk@aol.com
Master Parts Dist.
1251 Mound Ave. NW
Grand Rapids, MI 49504-2672
616-791-0505
1-800-446-1446
www.nbmc.com
East Coast Energy
10 East Route 36
W. Long Branch, NJ 07764
732-870-8809
1-800-755-8809
www.njplaza.com/ecep
21st Century
2950 Fretz Valley Road
Perkasie, PA 18944-4034
215-795-0400
800-325-4828
Laporte’s Parts & Service
2444 N. 5th Street
Hartsville, SC 29550-7704
843-332-0191
Parts Department
Cans Unlimited
P.O. Box 645
Taylor, SC 29687-0013
803-879-3009
1-800-845-5301
cuisales@aol.com
Washer Equipment Co.
1715 Main Street
Kansas City, MO 64108-2195
KS, MO, AR
816-842-3911
www.washerparts.com
111417-01B
www.desatech.com
25
ILLUSTRATED PARTS BREAKDOWN
MODELS S39PT AND S39NT (SHOWN)
1
2
10
6
3
7
4
13
9
8
14
10
11
12
5
26
www.desatech.com
111417-01B
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions
listed under Replacement Parts on page 20 of this manual.
111417-01B
KEY
NO.
PART NUMBER
S39PT
S39NT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
107433-01
104286-01
098249-01
107090-03
107089-01
111124-01
099056-17
101329-19
102772-01
099387-09
098271-10
101381-01
____
098867-10
107433-01
104285-01
098249-01
107090-03
107089-01
111124-01
099056-16
101329-20
102772-01
099387-09
098271-10
101381-01
105990-01
098867-09
DESCRIPTION
Log Set
ODS Pilot
ODS Nut
Burner Outlet Tube
Inlet Tube
Burner Retainer Spring
Burner Orifice Injector
Gas Control Valve
Burner
Pilot Tube
Ignitor Cable
Piezo Ignitor and Cover
Pilot Shield
Regulator
www.desatech.com
QTY.
1
1
2
1
1
1
1
1
1
1
1
1
1
1
27
ILLUSTRATED PARTS BREAKDOWN
STOVE BODY FOR MODELS S39PT AND S39NT
5
21
10
1
19
22
21
20
18
22
26
6
11
19
26
8
23
4
9
17
12
2
16
3
7
15
14
24
25
13
28
www.desatech.com
111417-01B
PARTS LIST
STOVE BODY FOR MODELS S39PT AND S39NT
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions
listed under Replacement Parts on page 20 of this manual.
KEY
NO.
PART NO.
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
107085-01CK
**
107076-01CK
**
107082-01CK
105657-01
107363-01CK
**
**
**
107365-01CK
101382-01
107092-01
107093-01
106754-01
101386-02
099230-02
107079-01CJ
102455-12
102455-13
**
**
101514-01
103158-01
107083-01
098304-03
Top Panel, Stove
Pedestal Stove Assembly
Stove Base
Stove Back Panel
Top Trim
Blower Bracket
Door
Firebox Back Panel
Firebox Floor
Firebox Top
Screen Assembly
Valve Bracket
Brass Trim, Bottom
Brass Trim, Firebox
Knob
Door Hinge
Shoulder Screw
Heat Deflector
Louver, Small
Louver, Large
Support, End Louver
Support, Center Louver
Blower Sensor Cover
Magnet Catch
Magnet Bracket
Louver Screw
QTY.
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
4
1
2
1
2
2
1
1
1
12
PARTS AVAILABLE — NOT SHOWN
101054-01
100563-01
104108-06
Lighting Instructions Plate
Warning Plate
Touch-Up Paint Kit
1
1
1
** Part not available for field replacement.
111417-01B
www.desatech.com
29
ACCESSORIES
CLEANING KIT - CCK
Purchase these heater accessories from your local
dealer or Parts Central (see page 21). If they cannot supply these accessories call DESA Heating
Productsʼ Sales Department at 1-866-672-6040
for referral information. You can also write to the
address listed on the back page of this manual.
(Not Shown)
Your vent-free gas appliance requires regular
cleaning and maintenance to prevent performance
problems. This kit gives you the tools and instructions to make it easy to clean all critical areas of
your appliance.
INFORMATION VIDEO - 108917-01
(Not Shown)
For all models. A care and maintenance video is
available by calling 1-866-672-6040. You may also
email your request to
productsupport@desaint.com.
EQUIPMENT SHUTOFF VALVE
GA5010
For all models. Equipment shutoff valve with 1/8"
NPT tap. Fits 1/2" NPT pipe.
MANUALLY-CONTROLLED
BLOWER KIT - GA3750
Provides better heat distribution. Features variable
speed control knob.
THERMOSTATICALLY-CONTROLLED
BLOWER KIT - GA3650TA
(Not Shown)
Provides better heat distribution. Features variable
speed control knob.
30
www.desatech.com
111417-01B
NOTES
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______________________________________________________
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111417-01B
www.desatech.com
31
WARRANTY INFORMATION
KEEP THIS WARRANTY
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our
standard written warranty. We make no other warranty, expressed or implied.
LIMITED WARRANTY
VENT-FREE GAS PEDESTAL STOVE
DESA Heating Products warrants this product to be free from defects in materials and components for two (2)
years from the date of first purchase, provided that the product has been properly installed, operated and maintained
in accordance with all applicable instructions. To make a claim under this warranty the Bill of Sale or cancelled
check must be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required
to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heating
Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product
and/or DESA Heating Products who will provide original factory replacement parts. Failure to use original factory
replacement parts voids this warranty. The heater MUST be installed by a qualified installer in accordance with
all local codes and instructions furnished with the unit.
This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts
that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by
improper installation. Travel, diagnostic cost, labor, transportation and any and all such other costs related to
repairing a defective heater will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE
OF THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED
WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO
(2) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESA HEATING
PRODUCTSʼ LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND
DESA HEATING PRODUCTS SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER
INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of
incidental or consequential damages, so the above limitation on implied warranties or exclusion or limitation on
damages may not apply to you.
This warranty gives you specific legal rights and you may also have other rights that vary from state to state.
For information about this warranty write:
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
111417 01
NOT A UPC
111417-01
Rev. B
10/04
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