Page 1
UNVENTED (VENT-FREE) BLUE FLAME GAS HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
MODELS GWN6, GWP6, GWN10, GWP10
GWN10T AND GWP10T
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
Page 2
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 Common
wealth of Massachusetts.
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TABLE OF CONTENTS
Safety Information ............................................... 3
Product Identification ........................................... 4
Local Codes ........................................................ 4
Unpacking ........................................................... 4
Product Features ................................................. 4
Air For Combustion and Ventilation .....................
Installation ........................................................... 7
Operating Heater ............................................... 12
Inspecting Heater .............................................. 14
Cleaning and Maintenance ................................ 15
2
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Troubleshooting .................................................
Illustrated Parts Breakdown and Parts List ....... 20
Specifications .................................................... 24
Accessories ....................................................... 25
Service Hints ..................................................... 25
5
Technical Service ..............................................
Service Publications .......................................... 25
Replacement Parts ............................................ 25
Parts Central ..................................................... 26
Warranty Information ............................
16
25
Back cover
117001-01A
Page 3
SAFETY INFORMATION
WARNING: This product
contains and/or g e n e rat e s
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc
tive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
be fore trying t o asse mble,
operate or service this heater.
Improper use of this heater 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 Pro-
pane/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 warn
ings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
WARNING: Any change to
this heater or its controls can
be dangerous.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not approved for use with this heater.
-
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 heater.
Surface of heater becomes very
hot when running heater. Keep
children and adults away from
hot surface to avoid burns or
clothing ignition. Heater will
remain hot for a time after shut
down. Allow surface to cool
before touching.
Carefully supervise young children when they are in the same
room with heater.
Make sure grill guard is in place
before running heater.
Keep the appliance area clear
and free from combustible ma
terials, gasoline and other flammable vapors and liquids.
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.
3. Do not install 10,000 Btu/hr units in a bath
room (6,000 Btu/hr heaters are allowed in a
bathroom).
4. 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
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3117001-01A
Page 4
SAFETY INFORMATION
Continued
5. This heater needs fresh, outside 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,
6. Keep all air openings in the front and bottom
of heater clear and free of debris. This will
insure enough air for proper combustion.
7. If heater shuts off, do not relight until you
provide fresh, outside air. If heater keeps
shutting off, have it serviced.
8. Do not run heater
• where flammable liquids or vapors are used
or stored
• under dusty conditions
9. 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.
10. Turn off heater and let cool before servicing.
Only a qualified service person should service
and repair heater.
11. Operating heater above elevations of 4,500
feet (1,371 m) could cause pilot outage.
12. To prevent performance problems, do not use
propane/LP fuel tank of less than 100 lbs.
(45 kg) capacity.
13. 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.
14. Prov ide adequa te clearance s around air
openings.
page 5.
LOCAL CODES
Install and use heater 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.
National Fire Protection Association, Inc.
*.
1430 Broadway
New York, NY 10018
Batterymarch Park
Quincy, MA 02269
PRODUCT
IDENTIFICATION
Ignitor Button
Glass
Panel
Front
Panel
Figure 1 - Vent-Free Gas Heater
Control Knob
Grill
Guard
UNPACKING
1. Remove heater from carton.
2. Remove all protective packaging applied to
heater for shipment.
3. Check heater for any shipping damage. If
heater is damaged, promptly return to where
you bought heater.
PRODUCT FEATURES
SAFETY DEVICE
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.
THERMOSTATIC HEAT CONTROL
(Thermostat Models Only)
Thermostat models have a thermostat sensing
-
bulb and a control valve. This results in the greatest heater comfort. This can also result in lower
gas bills.
Heater
Cabinet
4
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117001-01A
Page 5
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 effi
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, 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 fol
lowing 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.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the out
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10
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 these three cri
teria, 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
ing Fresh-Air Flow For Heater Location,
page 6.
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 m
rating of all appliances installed in that space and
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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.
-11
kg per pa-sec-m2) or
Determin-
3
per kw) of the aggregate input
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5117001-01A
Page 6
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: Includes the room in which you will install
heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x
width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (6.1 m) (length) x 16
ft. (4.88 m) (width) x 8 ft. (2.44 m) (ceiling height)
= 2560 cu. ft. (72.49 m3) (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: 2,560 cu. ft. (72.49 m3) (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 heater ___________
Gas water heater* ___________
Gas furnace ___________
Vented gas heater ___________
Gas fireplace logs ___________
Other gas appliances* + __________
Total = __________
* 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 ___________
Vent-free heater + __________
Total = __________
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
60,000 Btu/Hr (actual amount of
6
can support)
Btu/Hr used)
50,000
10,000
60,000
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
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The space in the above 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.
B. Vent room directly to the outdoors. See Ventila
tion Air From Outdoors, page 7.
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,
confined space. You will need no additional fresh
air ventilation.
the space is an un-
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
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" (30.5 cm)
of the ceiling and one within 12" (30.5 cm) of the
floor on the wall connecting the two spaces (see
options 1 and 2, Figure 2, page 7). You can also
-
remove door into adjoining room (see option 3,
Figure 2, page 7). 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.
117001-01A
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Page 7
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
Outlet
Air
Ve
ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION
AND VENTILATION
Continued
Figure 2 - Ventilation Air from Inside
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills
or ducts. You must provide two permanent openings: one within 12" (30.5 cm) of the ceiling and
one within 12" (30.5 cm) 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.
Figure 3 - Ventilation Air from Outdoors
Building
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.
CHECK GAS TYPE
Use only the correct type of gas (natural or propane/LP). If your gas supply is not the correct gas
type, 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.
INSTALLATION ITEMS
Before installing heater, make sure you have the
items listed below.
• for propane/LP gas, external regulator (supplied
by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• ground joint union
• sediment trap
• tee joint
• pipe wrench
• for natural gas, test gauge connection*
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. The optional CSA designcertified equipment shutoff valve can be purchased
from your dealer. See
Accessories, page 25.
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7117001-01A
Page 8
INSTALLATION
36" (91.5 cm)
3" (7.7 cm)
CEILING
Minimum
6"
(15.3 cm)
Minimum
From
Sides Of
Heater
Right
Side
Left
Side
Continued
LOCATING HEATER
This heater is designed to be mounted on a wall.
WARNING: Maintain the
minimum clearances shown
in Figure 4. If you can, provide
greater clearances from floor,
ceiling and joining wall.
WARNING: Never install the
heater
• in a bathroom (10,000 Btu/hr
only. 6,000 Btu/hr models are
allowed in a bathroom. Check
local codes.)
• in a recreational vehicle
• where curtains, furniture,
clothing or other flammable
objects are less than 36"
(91.5 cm) from the front, top
or sides of the heater
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas
Minimum To Top Surface
Figure 4 - Mounting Clearances As
Viewed From Front of Heater
8
Of Carpeting, Tile Or Other
Combustible Material
CAUTION: If you install the
heater in a home garage
• heater pilot and burner must
be at least 18" (45.7 cm) above
floor
• locate heater where moving
vehicle will not hit it
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.
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. If high humidity is experienced, a dehumidifier may be used
to help lower the water vapor content in the air.
For convenience and efficiency, install heater
• where there is easy access for operation, inspec
tion and service
• in coldest part of room
THERMOSTAT SENSING BULB
(Thermostat Models Only)
The thermostat sensing bulb is located inside the
heater. Do not move this bulb during installation
or operation of the heater.
INSTALLING HEATER TO WALL
Marking Screw Locations
1. Determine where you will locate heater.
WARNING: Maintain minimum clearances shown in Figure
5, page 9. If you can, provide
greater clearances from floor
and joining wall.
2. Mark two mounting screw locations on wall
(see Figure 5, page 9).
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117001-01A
Page 9
INSTALLATION
Continued
8 7/8"
(22.5 cm)
Minimum To
Maintain 6"
(15.3 cm)
Clearance
From Wall
JOINING WALL
Figure 5 - Mounting Screw Locations
Installing Two Mounting Screws
Note: Wall anchors and mounting screws are
in hardware package. The hardware package is
provided with heater.
Attaching to wall stud method
For attaching mounting screw to wall stud
1. Drill hole at marked location using 9/64"
drill bit.
2. Insert mounting screw into wall stud.
3. Tighten screw until 1/16" (1.6 mm) space (thick
ness of penny) is between screwhead and wall.
Attaching to wall anchor method
Follow instructions below to attach mounting
screws to hollow walls (wall areas between studs)
or solid walls (concrete or masonry).
1. Drill holes at marked locations using 5/16"
drill bit. For solid walls (concrete or masonry),
drill at least 1 1/4" (3.2 cm) deep.
2. Fold wall anchor (see Figure 6).
3. Insert wall anchor (wings first) into hole. Tap
anchor flush to wall.
4. For thin walls [1/2" (1.3 cm) or less], insert red
key into wall anchor. Push red key to “pop”
open anchor wings (see Figure 7).
IMPORTANT: Do not hammer key! For thick
walls [over 1/2" (1.3 cm) thick] or solid walls,
do not pop open wings.
5. Tighten two screws until 1/16" (1.6 mm) space
(thickness of penny) is between screwheads
and wall (see Figure 8).
7
(14.7 cm)
Mounting
Screw
Locations
FLOOR
3
4
/
"
1
4
20
/
"
(51.4 cm)
Minimum To
Maintain 3"
(7.7 cm)
Clearance
From Floor
Thin or
Thick Wall
(thick wall
shown)
1/16"
(1.6 mm)
Space
Figure 8 - Tightening Anchors
Placing Heater On Mounting Screws
1. Locate two keyhole slots on back panel of
heater (see Figure 9).
2. Place large openings of slots over screwheads.
Slide heater down until screws are in small
portion of slots.
Keyhole Slots
Figure 9 - Location Of Keyhole Slots On
Back Panel Of Heater
Removing Front Panel Of Heater
-
1. Remove two screws near bottom corners of
front panel. See Figure 10.
2. Lift straight up on grill guard until it stops. Grill
guard will slide up about 1/4" (6.4 mm).
3. Pull bottom of front panel forward, then
down.
Figure 10 - Removing Front Panel Of
Heater
Solid
Wall
Figure 6 - Folding
Anchor
Figure 7 - Popping
Open Anchor Wings
For Thin Walls
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9117001-01A
Page 10
INSTALLATION
Continued
Installing Bottom Mounting Screw
1. Locate bottom mounting hole. This hole is
near bottom on back panel of heater (see
Figure 11).
2. Mark screw location on wall.
3. Remove heater from wall.
4. If installing bottom mounting screw into hol
low or solid wall, install wall anchor. Follow
steps 1 through 5 under Attaching To Wall
Anchor Method, page 9. If installing bottom
mounting screw into wall stud, drill hole at
marked location using 9/64" drill bit.
5. Replace heater on wall.
6. Insert bottom anchor screw through back
panel into bottom anchor or drilled hole (see
Figure 11).
7. Tighten screw until heater is firmly secured to
wall. Do not over tighten.
Note: Do not replace front panel at this time.
Replace front panel after making gas connections and checking for leaks (see pages 10
through 12).
WARNI N G : F o r n a t u ra l
gas, never connect heater to
private (non-utility) gas wells.
This gas is commonly known
as wellhead gas.
IMPORTANT: For natural gas, check gas line
pressure before connecting heater to gas line. Gas
-
line pressure must be no greater than 10.5 inches of
water. If gas line pressure is higher, heater regulator damage could occur.
CAUTION: For propane/LP
gas, never connect heater di
rectly to the propane/LP supply.
This heater requires an external
regulator (not supplied). Install
the external regulator between the
heater and propane/LP supply.
For propane/LP gas, 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 pres
sure, heater regulator damage could occur. Install
the external regulator with the vent pointing down
as shown in Figure 12. Pointing the vent down
protects it from freezing rain or sleet.
-
-
Figure 11 - Installing Bottom Mounting
Screw
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 3/8" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified service person must connect heater
to gas supply. Follow all local
codes.
10
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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
large enough diameter to allow
proper gas volume to heater. If
pipe is too small, undue loss of
volume will occur.
Propane/LP
Supply Tank
Figure 12 - External Regulator With Vent
Pointing Down (Propane/LP only)
External
Regulator
Vent
Pointing
Down
117001-01A
Page 11
INSTALLATION
Continued
Installation must include 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 13).
IMPORTANT: Install an 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
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could result
in clogged heater valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Install sediment trap in supply line as shown in
Figure 13. Locate sediment trap where it is within
reach for cleaning. 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.
3/8" NPT
Pipe
Nipple
Ground
Joint
Union
Equipment
Shutoff
Valve *
Natural Gas
From Gas
Meter (7" W.C.
to 10.5" W.C.
Pressure)
Propane/LP
From External
Regulator
(11" W.C. to 14"
W.C. Pressure)
* 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
117001-01A
3"
Min.
Cap Pipe Tee
Nipple Joint
Sediment Trap
Figure 13 - Gas Connection
Accessories, page 25.
Pressure
Regulator
Heater
Cabinet
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
www.desatech.com
IMPORTANT: Hold the pressure regulator with
wrench when connecting it to gas piping and/or
fittings. Do not over tighten pipe connection to
regulator. The regulator body could be damaged.
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 detec
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: For propane/LP
gas, make sure external regulator has been installed between
propane/LP supply and heater.
See guidelines under Connect-
ing to Gas Supply, page 10.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance 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
Test Gauge Connection*
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 fit
tings for leaks.
-
-
11
Page 12
INSTALLATION
Continued
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 14).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas
or using compressed air.
3. Check all joints from gas meter for natural gas
(see Figure 15) or propane/LP supply tank for
propane/LP gas, to equipment shutoff valve
(see Figure 16). 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 14).
2. For natural gas open main gas valve located
on or near gas meter. For propane/LP gas open
propane/LP supply tank valve.
Equipment
Shutoff Valve
Figure 14 - Equipment Shutoff Valve
Gas
Meter
Figure 15 - Checking Gas Joints for
Natural Gas
Propane/LP
Supply Tank
Figure 16 - Checking Gas Joints for
Propane/LP Gas
12
Open
Closed
Control
Valve
Location
Equipment
Shutoff
Valve
Control
Valve
Location
Equipment
Shutoff
Valve
www.desatech.com
3. Make sure control knob of heater is in the OFF
position.
4. Check all joints from equipment shutoff valve
to thermostat gas valve (see Figure 15 or 16).
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). Check
all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli
ance, page 13).
8. Replace front panel.
OPERATING HEATER
FOR YOUR SAFETY READ
BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result
causing property damage, per
sonal 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 neig h bor ʼs phon e. Fo llo w 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. 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.
-
117001-01A
-
Page 13
O
F
F
P
I
L
O
T
OPERATING HEATER
Continued
LIGHTING
INSTRUCTIONS
1.
STOP! Read the safety information, page 12.
2. Make sure equipment shutoff valve is fully
open.
3. Turn off any electric power to the appliance
if service is to be performed.
4. Turn control knob clockwise
OFF position.
5. Wait five 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, page 12. If you donʼt smell gas,
go to the next step.
6. Ther mos tat Models: Turn control knob
cou nterclockwis e
t o the PILOT
position. Press in control knob for five (5)
seconds.
Manual Models: Press in and turn control
knob counterclockwise
position. Keep control knob pressed in for
five (5) seconds.
7. With control knob pressed in, push down
and release ignitor button. This will light
pilot. The pilot is attached to the front of
burner. Note:
You may be running this
heater for the first time after hooking up to
gas supply. If so, you may need to press in
control knob for 30 seconds or more. This
will allow air to bleed from the gas system.
If needed, keep pressing ignitor button until
pilot lights. If ignitor does not light pilot,
refer to Troubleshooting, page 16 or 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, page 14.
8. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob.
• If control knob does not pop up when
released, contact a qualified service person
or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4 thru 7.
Thermostat models have a safety interlock
system. Wait one (1) minute before lighting
pilot again.
9. Turn control knob counterclockwise
to desired heating level. The main burner
should light. Manual control heaters should
be used in locked positions.
to the
to the PILOT
www.desatech.com
WARNING: Always operate
manual control heaters at the
locked positions. Operation
between these positions may
create a possible health hazard
if used in a poorly ventilated
room. Read owner’s manual for
complete instructions.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
Ignitor Button
Figure 17 - Control Knob In The OFF
Position for Manual Control Models
Ignitor
Button
Figure 18 - Control Knob In The OFF
Position for Thermostat Models
Thermocouple
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise to the
OFF position.
2. Turn off all electric power to the appliance
if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise
PILOT position.
Control
Knob
Control
Knob
Ignitor Electrode
Pilot
Burner
Figure 19 - Pilot
to the
13117001-01A
Page 14
OPERATING HEATER
Continued
THERMOSTAT CONTROL
OPERATION
The thermostatic control used on these models
differs from standard thermostats. Standard
thermostats simply turn on and off the burner.
The thermostat used on this heater senses the
room temperature. At times the room may
exceed the set temperature. If so, the burner
will shut off. The burner will cycle back on
when room temperature drops below the set
temperature. The control knob can be set to
any heat level between 1 and 5.
amount of gas flow to the burner that increases
or decreases the burner flame height.
Note: The thermostat sensing bulb measures
the temperature of air near the heater cabinet.
This may not always agree with room temperature (depending on housing construction,
installation location, room size, open air tem
peratures, etc.) Frequent use of your heater will
let you determine your own comfort levels.
This adjusts the
MANUAL LIGHTING
PROCEDURE
1. Remove front panel (see Figure 10, page 9).
2. Follow steps 1 through 7 under Lighting
Instructions, page 13.
3. With control knob pressed in, strike match.
Hold match to pilot until pilot lights.
4. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob. Now follow step 9, under
Lighting Instructions, page 13.
5. Replace front panel.
INSPECTING HEATER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot flame pattern.
Figure 21 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 21
• turn heater off (see To Turn Off Gas to Appli
ance, page 13)
• see Troubleshooting
, page 16
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.
Blue Flame
Thermocouple
Figure 20 - Correct Pilot Flame Pattern
Thermocouple
Figure 21 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN
-
Figure 22, page 15, shows a correct burner flame
pattern. Figure 23, page 15, shows an incorrect
burner flame pattern. The incorrect burner flame pat
tern shows yellow tipping of the flame. It also shows
the flame higher than 1/2 the glass panel height.
Pilot Burner
Yellow Flame
Pilot Burner
WARNING: If yellow tipping
occurs, your heater could produce increased levels of carbon monoxide. If burner flame
pattern shows yellow tipping,
proceed with the following in
structions.
NOTICE: Do not mistake orange
flames with yellow tipping. Dust
or other fine particles enter the
heater and burn causing brief
patches of orange flame.
If burner flame pattern is incorrect, as shown in
Figure 23, page 15,
• turn heater off (see To Turn Off Gas to Appli
ance, page 13)
• see Troubleshooting
-
, page 16
-
-
-
14
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117001-01A
Page 15
1/2 GLASS HEIGHT
1/2 GLASS HEIGHT
CORRECT FLAME PATTERN
AT
HIGH POSITION
1/2 GLASS HEIGHT
INSPECTING HEATER
Continued
(Models GWN6 and GWP6 will be lower due to
Figure 22 - Correct Burner Flame Pattern
Figure 23 - Incorrect Burner Flame
lower input rating)
Yellow
Tipping
Pattern
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 clean
ing due to excessive lint from
carpeting, bedding material, pet
hair, etc.
-
BURNER PILOT AIR INLET
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 and lint. 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 com
pressed air in a can, please follow the directions on
the can. If you don't follow directions on the can,
you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burner, pilot for dust and dirt.
3. Blow air through the ports/slots and holes in
the burner.
4. Never insert objects into the pilot tube.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot as
sembly. There is a small pilot air inlet about two
inches from where the pilot flame comes out of
the pilot assembly (see Figure 24). With the unit
off, lightly blow air through the air inlet. You may
blow through a drinking straw if compressed air
is not available.
Pilot Assembly
Pilot Air Inlet
-
-
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
ODS/PILOT AND BURNER
Use a vacuum cleaner, pressurized air or small,
soft bristled brush to clean.
Figure 24 - Pilot Air Inlet Hole
CABINET
Air Passageways
Use a vacuum cleaner o r pressurized air to
clean.
Exterior
Use a soft cloth dampened with a mild soap and
water mixture. Wipe the cabinet to remove dust.
www.desatech.com
15117001-01A
Page 16
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
When ignitor button is pressed
in, there is no spark at ODS/
pilot
POSSIBLE CAUSE
1. Ignitor electrode positioned
wrong
2. Ignitor electrode broken
3. Ignitor electrode not connected
to ignitor cable
4. Ignitor cable pinched or wet
5. Broken ignitor cable
6. Bad piezo ignitor
7. Piezo ignitor nut is loose
REMEDY
1. Replace pilot assembly
2. Replace pilot assembly
3. Reconnect ignitor cable
4. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry
5. Replace ignitor cable
6. Replace piezo
7. Tigh ten nut hold ing piezo
ignitor. Nut is located inside
heater cabinet at top
When ignitor button is pressed
in, there is a spark at ODS/Pilot
but no ignition
1. Gas supply turned off or equip
ment shutoff valve closed
2. Control knob not in PILOT
position
3. Control knob not pressed in
while in PILOT position
4. Air in gas line s whe n installed
5. Depleted gas supply (propane/
LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
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. Repea t igniting
operation until air is removed
5. Contact local propane/LP gas
company
6. Clean ODS/pilot (see Cleaning
and Maintenance, page 15) or
replace ODS/pilot assembly
7. Replace gas regulator
16
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117001-01A
Page 17
OBSERVED PROBLEM
ODS /pilot lights but flame
goes out when control knob is
released
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1.
Control knob not fully pressed in
2. Control knob not pressed in
long enough
3. Equipment shutoff valve not
fully open
4. The rmo cou ple conne cti on
loose at control valve
5. Pilot flame not touching ther
mocouple, which allows ther
mocouple 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 parti all y clogged
ODS/pilot
6. Thermocouple damaged
7. Control valve damaged
-
-
REMEDY
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. Hand tighten until snug, then
tighten 1/4 turn more
5. A) Contact local natural or
propane/LP gas company
B ) Clean ODS/p i l o t (s e e
Cleaning and Maintenance
page 15) or replace ODS/pilot
assembly
6. Replace pilot assembly
7. Replace control valve
,
Burner does not light after
ODS/pilot is lit
Delayed ignition of burner
Burner backfiring during com
bustion
1. Burner orifice is clogged
2. Inlet gas pressure is too low
1. Manifold pressure is too low
2. Burner orifice is clogged
1. Burner orifice is clogged or
damaged
2. Burner damaged
3. Gas regulator defective
1. Clean burner orifice (see Clean
ing and Maintenance, page 15)
or replace burner orifice
2. Contact local natural or pro
pane/LP gas company
1. Contact local natural or pro
pane/LP gas company
2. Clean burner orifice (see Clean-
ing and Maintenance, page 15)
or replace burner orifice
1. Clean burner orifice (see Clean
ing and Maintenance, page 15)
or replace burner orifice
2. Replace burner
3. Replace gas regulator
-
-
-
-
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17117001-01A
Page 18
OBSERVED PROBLEM
Yellow flame during burner
combustion
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Not enough air
2. Inlet gas pressure is too low
3. Gas regulator defective
REMEDY
1. Check burner for dirt and debris. If found, clean burner (see
Cleaning and Maintenance,
page 15)
2. Contact local natural or propane/LP gas company
3. Replace gas regulator
Slight smoke or odor during
initial operation
Heater produces a whistling
noise when burner is lit
Heater produces a clicking/tick
ing noise just after burner is lit
or shut off
White powder residue forming
within burner box or on adjacent
walls or furniture
1. Residues from manufacturing
processes
1.
Turning control knob to highest position when burner is
cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partial ly clog ged
burner orifice
-
1. Metal expanding while heating
or contracting while cooling
1. Wh en heated, vapors from
furniture polish, wax, carpet
cleaner, etc., may turn into
white powder residue
1. Problem will stop after a few
hours of operation
1. Turn control knob to lowest
position and let warm up for a
minute
2. Op er ate burner until air is
removed from line. Have gas
checked by local natural or
propane/LP gas company
3.
Observe minimum installation
clearances (see Figure 4, page 8)
4. Clean burner (see Cleaning
and Maintenance, page 15) or
replace burner orifice
1. This is common with most heat
ers. If noise is excessive, contact
qualified service person
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
-
18
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117001-01A
Page 19
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.
OBSERVED PROBLEM
Heat er pr oduce s u nwant ed
odors
Heater shuts off in use (ODS
operates)
Gas odor even when control
knob is in OFF position
Gas odor during combustion
Moisture/condensation noticed
on windows
POSSIBLE CAUSE
1.
Heater burning vapors from
paint, hair spray, glues, etc. See
IMPORTANT statement above
2. Low fuel supply (propane/LP
gas only)
3. Gas le ak. Se e War n i ng
statement at top of page
1. Not enough fresh air is avail
able
2. Low line pressure
3. O D S/ p il ot i s p a rt ia ll y
clogged
1. Gas le ak. Se e War n i ng
statement at top of page
2. Control valve defective
1. Foreign matter between con
trol valve and burner
2. Gas le ak. Se e War n i ng
statement at top of page
1. Not enough combustion/ven
tilation air
REMEDY
1. Ventilate room. Stop using
odor causing products while
heater is running
2. Refill supply tank
3. Locate and correct all leaks
(see Checking Gas Connec
tions, page 11)
1. Open window and/or door for
ventilation
2. Contact local natural or pro
pane/LP gas company
3. Clean ODS/pilot (see Cleaning
and Maintenance, page 15)
1. Locate and correct all leaks
(see Checking Gas Connec
tions, page 11)
2. Replace control valve
1. Take apart gas tubing and
remove foreign matter
2. Locate and correct all leaks
(see Checking Gas Connec
tions, page 11)
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
-
-
-
-
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19117001-01A
Page 20
9
11
10
1
2
3
4
5
6
7
8
10
12
13
14
16
17
20
21
19
23
22
18
24
15
ILLUSTRATED PARTS BREAKDOWN
MODELS GWP6, GWN6, GWP10 AND GWN10
11
11-1
20
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ODS/Pilot
117001-01A
Page 21
PARTS LIST
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions
listed under Replacement Parts on page 25 of this manual.
KEY
NO. PART NO. DESCRIPTION QTY
GWP6
1 098304-01 Screw, #10 x 3/8" • • • • 2
2 099467-07 Front Panel • • • • 1
3 099318-04 Grill Guard • • • • 1
4 101108-01 Grill Guard Clip • • • • 2
5 102017-02 Bottom Glass Retainer • • • • 1
6 098260-11 Glass Panel • • • • 1
7 099319-02 Top Glass Retainer • • • • 1
8 099317-02 Deflector Unit • • • • 1
9 098271-09 Ignitor Cable • • • • 1
10 098249-01 Nut, M5 • • • • 2
11 110803-01* ODS/Pilot Assembly
110803-02* ODS/Pilot Assembly
11-1 110186-01
Thermocouple Kit • • • • 1
• • 1
12 104263-03 Burner • • • 1
104263-02 Burner • 1
13 099387-17 Pilot Tubing • • • • 1
14 104259-01 Injector, 1 piece • 1
104259-02 Injector, 1 piece • 1
104259-03 Injector, 1 piece • 1
104259-04 Injector, 1 piece • 1
15 NJF-8C Hex Nut • • • • 1
16 099415-17 Pressure Regulator • • 1
099415-18 Pressure Regulator • • 1
17 099462-01 Burner Tubing • • • • 1
18 099391-02 Regulator Tubing • • • • 1
19 099413-01 Control Valve • • 1
099413-02 Control Valve • • 1
20 ** Cabinet Assembly • • • • 1
21 097159-04 Piezo Ignitor • • • • 1
22 099393-02 Control Knob • • • • 1
23 098508-01 Valve Retainer Nut • • • • 1
24 099818-01 Internal Tooth Washer • • • • 1
PARTS AVAILABLE - NOT SHOWN
100642-02 Assembly, Hardware • • • • 1
** Not a field replaceable part.
* If replacing ODS pilot and your model is pre 2002, your part
number will be 100701-03 for natural gas models, 099059-03
for propane/LP models. The thermocouple part number will be
098514-01 for both gases. The electrode part number will be
098594-01 for both gases.
GWN10
GWP10
GWN6
• • 1
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21117001-01A
Page 22
ILLUSTRATED PARTS BREAKDOWN
15
1
2
3
5
6
7
8
4
13
9
10
12
13
14
11
17
19
18
9
20
21
16
MODELS GWP10T AND GWN10T
11
11-1
ODS/Pilot
22
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117001-01A
Page 23
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions
PARTS LIST
listed under Replacement Parts on page 25 of this manual.
KEY
NO. PART NO. DESCRIPTION QTY.
1 098304-01 Screw, #10 x 3/8" • • 2
2 099467-07 Front Panel Assembly • • 1
3 099318-04 Grill Guard • • 1
4 101108-01 Grill Guard Clip • • 2
5 102017-02 Bottom Glass Retainer • • 1
6 098260-11 Glass Panel • • 1
7 099319-02 Top Glass Retainer • • 1
8 099317-02 Deflector Unit • • 1
9 098271-09 Ignitor Cable • • 1
10 098249-01 Nut, M5 • • 2
11 110803-01* ODS/Pilot Assembly
110803-02* ODS/Pilot Assembly
11-1 110186-01
Thermocouple Kit • • 1
12 104263-03 Burner • • 1
13 099387-11 Pilot Tubing • • 1
14 104259-05 Injector, 1 Piece • 1
104259-06 Injector, 1 Piece • 1
15 NJF 8C Hex Nut • • 1
16 099415-17 Pressure Regulator • 1
099415-18 Pressure Regulator • 1
17 104261-01 Burner Tubing • • 1
18 104264-01 Regulator Tubing • • 1
19 098522-11 Thermostat Gas Valve • 1
098522-18 Thermostat Gas Valve • 1
20 ** Cabinet Assembly • • 1
21 097159-04 Piezo Ignitor • • 1
PARTS AVAILABLE - NOT SHOWN
100642-02 Assembly, Hardware • • 1
** Not a field replaceable part.
* If replacing ODS pilot and your model is pre 2002, your
part number will be 100701-03 for natural gas models,
099059-03 for propane/LP models. The thermocouple part
number will be 098514-01 for both gases. The electrode
part number will be 098594-01 for both gases.
GWN10T
GWP10T
• 1
• 1
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23117001-01A
Page 24
SPECIFICATIONS
GWP6
• 4,400/6,000 Btu/hr (Variable)
• Propane/LP Gas
• Piezo Ignition
• Pressure Regulator Setting - 8" W.C.
• Inlet Gas Pressure (inches of water)
Maximum - 14", Minimum - 11"
• Heater Dimensions (H x W x D)
21.5" x 13.5" x 7" (54.6 x 34.3 x 17.8 cm)
• Carton Dimensions (H x W x D)
25" x 16.75" x 7.75" (63.5 x 42.5 x 19.7 cm)
• Heater Weight - 12.5 lb (5.7 kg)
• Heater Shipping Weight - 14 lb (6.4 kg)
GWN6
• 4,400/6,000 Btu/hr (Variable)
• Natural Gas
• Piezo Ignition
• Pressure Regulator Setting - 3" W.C.
• Inlet Gas Pressure (inches of water)
Maximum - 10.5", Minimum - 4"
• Heater Dimensions (H x W x D)
21.5" x 13.5" x 7" (54.6 x 34.3 x 17.8 cm)
• Carton Dimensions (H x W x D)
25" x 16.75" x 7.75" (63.5 x 42.5 x 19.7 cm)
• Heater Weight - 12.5 lb (5.7 kg)
• Heater Shipping Weight - 14 lb (6.4 kg)
GWP10
• 5,000/10,000 Btu/hr (Variable)
• Propane/LP Gas
• Piezo Ignition
• Pressure Regulator Setting - 8" W.C.
• Inlet Gas Pressure (inches of water)
Maximum - 14", Minimum - 11"
• Heater Dimensions (H x W x D)
21.5" x 13.5" x 7" (54.6 x 34.3 x 17.8 cm)
• Carton Dimensions (H x W x D)
25" x 16.75" x 7.75" (63.5 x 42.5 x 19.7 cm)
• Heater Weight - 12.5 lb (5.7 kg)
• Heater Shipping Weight - 14 lb (6.4 kg)
GWN10
• 5,000/10,000 Btu/hr (Variable)
• Natural Gas
• Piezo Ignition
• Pressure Regulator Setting - 3" W.C.
• Inlet Gas Pressure (inches of water)
Maximum - 10.5", Minimum - 5"
• Heater Dimensions (H x W x D)
21.5" x 13.5" x 7" (54.6 x 34.3 x 17.8 cm)
• Carton Dimensions (H x W x D)
25" x 16.75" x 7.75" (63.5 x 42.5 x 19.7 cm)
• Heater Weight - 12.5 lb (5.7 kg)
• Heater Shipping Weight - 14 lb (6.4 kg)
GWP10T
• 5,000/10,000 Btu/hr (Variable)
• Propane/LP Gas
• Piezo Ignition
• Pressure Regulator Setting - 8" W.C.
• Inlet Gas Pressure (inches of water)
Maximum - 14", Minimum - 11"
• Heater Dimensions (H x W x D)
22" x 13.5" x 7" (55.9 x 34.3 x 17.8 cm)
• Carton Dimensions (H x W x D)
25" x 16.75" x 7.75" (63.5 x 42.5 x 19.7 cm)
• Heater Weight - 13.5 (6.1 kg)
• Heater Shipping Weight - 15 lb (6.8 kg)
GWN10T
• 5,000/10,000 Btu/hr (Variable)
• Natural Gas
• Piezo Ignition
• Pressure Regulator Setting - 3" W.C.
• Inlet Gas Pressure (inches of water)
Maximum - 10.5", Minimum - 5"
• Heater Dimensions (H x W x D)
22" x 13.5" x 7" (55.9 x 34.3 x 17.8 cm)
• Carton Dimensions (H x W x D)
25" x 16.75" x 7.75" (63.5 x 42.5 x 19.7 cm)
• Heater Weight - 13.5 (6.1 kg)
• Heater Shipping Weight - 15 lb (6.8 kg)
24
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117001-01A
Page 25
ACCESSORIES
Purchase this heater accessory from your local
dealer. If they can not supply this accessory, either
contact your nearest Parts Central (page 26) or
call DESA Heating Products at 1-866-672-6040 for
referral information. You can also write to the address
listed on the back page of this manual.
EQUIPMENT SHUTOFF VALVE
GA5010
For all models. Equipment shutoff valve with
1/8" NPT tap.
ELECTRONIC IGNITOR KIT - GA435
Not Shown
For all piezo ignitor models. Provides easier
lighting of the pilot.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burner 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, con
tact your local natural or propane/LP gas supplier.
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.
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. If they
canʼt supply original replacement part(s), either
contact your nearest Parts Central (see page 26)
or 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
-
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 techni
cal service web site at www.desatech.com.
SERVICE PUBLICATIONS
You can purchase a service manual from the address
listed on the back page of this manual. Send a check
for $5.00 payable to DESA Heating Products.
www.desatech.com
-
25117001-01A
Page 26
PARTS CENTRAL
These Parts Centrals are privately owned businesses. They have agreed to support our customerʼs needs
by providing original replacement parts and accessories.
Tool & 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
Washer Equipment Co.
1715 Main Street
Kansas City, MO 64108-2195
KS, MO, AR
816-842-3911
www.washerparts.com
East Coast Energy
707 Broadway
W. Long Branch, NJ 07764-1501
732-870-8809
1-800-755-8809
www.njplaza.com/ecep
21st Century
2950 Fretz Valley
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
26
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117001-01A
Page 27
NOTES
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www.desatech.com
27117001-01A
Page 28
117001 01
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 WARRANTIES FOR NEW AND FACTORY
RECONDITIONED PRODUCTS
New Products: DESA Heating Products warrants this heater and any parts thereof, to be free of defects in materials
and workmanship for two (2) years from the date of first purchase, when operated and maintained in accordance
with the manufacturer's instructions. These warranties are extended only to the original retail purchaser, when
proof of purchase is provided.
Factory Reconditioned Heaters: DESA Heating Products warrants this factory reconditioned heater and any parts
thereof, to be free of defects in materials and workmanship for thirty (30) days from the date of first purchase,
when operated and maintained in accordance with the manufacturer's instructions. These warranties are extended
only to the original retail purchaser, when proof of purchase is provided.
This warranty is extended only to the original retail purchaser. This warranty covers only the cost of part(s) required
to restore this heater to proper operating condition. 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, INCLUD
ING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO
(2) YEARS 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, INCI
DENTAL 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
NOT A UPC
Patent Pending
117001-01
Rev. A
05/05
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