UNVENTED (VENT-FREE) BLUE FLAME GAS GARAGE HEATER
SAFETY INFORMATION AND INSTALLATION MANUAL
BG30N, BG30NT, BG30P, BG30PT, FG30N, FG30NT, FG30P,
FG30PT, GG30N, GG30NT, GG30P, GG30PT, RG30N, RG30NT,
RG30P, RG30PT, GMG30N, GMG30NT, GMG30P, GMG30PT
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 quali-
fied 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 indi
cated 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.
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Product Identification ...........................................
Unpacking ........................................................... 4
Product Features ................................................. 4
Air For Combustion And Ventilation .....................
Installation ........................................................... 7
Operating Heater ............................................... 15
Inspecting Heater .............................................. 18
Cleaning and Maintenance ................................ 19
Troubleshooting .................................................
Specifications ....................................................
Service Hints ..................................................... 25
4
Technical Service ..............................................
Service Publications .......................................... 25
Replacement Parts ............................................ 25
5
Illustrated Parts Breakdown and Parts List ....... 26
Accessories ....................................................... 30
Parts Centrals .................................................... 31
Warranty Information ...........................
Back Cover
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114683-01B
SAFETY INFORMATION
IMPORTANT: Read this owner’s
manual carefully and completely
be fore tr ying to assemb le,
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 head
aches, 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 fuel gases. Fuel gases are odorless. An
odor-making agent are added to fuel gases. The odor
helps you detect a fuel gas leak. However, the odor
added to fuel gas can fade. Fuel 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 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 shutdown. Allow surface to cool
before touching.
Carefully supervise young chil-
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dren 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 flam
mable 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. This heater shall not be installed in a bedroom
or 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
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,
page 5.
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114683-01B 3
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SAFETY INFORMATION
Continued
6. Keep all air openings in 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. 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. 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.
11. Turn off and let cool before servicing. Only
a qualified service person should service and
repair heater.
12. Operating heater above elevations of 4,500
feet could cause pilot outage.
13. To prevent performance problems, do not
use propane/LP fuel tank of less than 100
lbs. capacity.
14. Prov ide adequa te clearance s around air
openings.
LOCAL CODES
Install and use heater with care. Follow all local codes. In the absence of local codes, use the
latest edition of 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
Heater
Cabinet
Front Panel
Ignitor Button
Figure 1 - Vent-Free Gas Heater
Control Knob
Grill Guard
Heat Shield
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 inform dealer
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 have a thermostat sensing
bulb and a control valve. This results in the great
est heater comfort. This can also result in lower
gas bills.
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114683-01B
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 (6x10
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-
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Air Flow For Heater Location, page 6.
Confined and Unconfined Space
The National Fuel G as 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
an unconfined space as a space whose volume is
not less than 50 cubic feet per 1,000 Btu per hour
3
(4.8 m
per kw) of the aggregate input rating of
all appliances installed in that space. Rooms com
municating directly with the space in which the
appliances are installed*, through openings not
furnished with doors, are considered a part of the
unconfined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
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kg per pa-sec-m2) or
3
per kw) of the aggregate input
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114683-01B 5
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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. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 cu. ft.
(volume of space)
If additional ventilation to adjoining room is
supplied with grills or openings, add the volume
of these rooms to the total volume of the space.
2. 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: 2560 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 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 = _____________
40,000
30,000
70,000
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
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)
70,000 Btu/Hr (actual amount of Btu/Hr used)
The space in the above example is a confined space
because the actual Btu/Hr used is more than the maxi
mum Btu/Hr the space can support. You must provide
additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoin
ing room. If the extra space provides an 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 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,
fined space. You will need no additional fresh air
ventilation.
the space is an uncon-
WARNING: If the area in
which the heater may be oper
ated 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.
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114683-01B
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
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un
confined 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.
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.
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Figure 3 - Ventilation Air from Outdoors
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 pri
mary 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.
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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 pro
pane/LP) gas. Field conversion
Figure 2 - Ventilation Air from Inside
114683-01B 7
Building
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is not permitted.
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INSTALLATION
Minimum
From
Sides Of
Heater
36"
14"
FLOOR
CEILING
Minimum
Minimum To
To
p Surface
Of Carpeting,
Ti
le Or Other
Combustible
Material
Left
Side
Right
Side
6"
Continued
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
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.
You can locate heater on floor, away from a wall.
An optional floor mounting stand is needed. Pur
chase the floor mounting stand from your dealer.
See Accessories, page 30.
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 36 inches
from the front, top or sides of
the heater
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas
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Accessories, page 30.
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 hu
midity is experienced, a dehumidifier may be used
to help lower the water vapor content in the air.
CAUTION: When installing
heater in a home garage
• heater pilot and burner must be
at least 18 inches above floor
• locate heater where moving
vehicle will not hit it
For convenience and efficiency, install heater
• where there is easy access for operation, inspec
tion and service
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• in coldest part of room
An optional fan kit is available from your dealer.
See Accessories, page 30. If planning to use fan,
locate heater near an electrical outlet.
Figure 4 - Mounting Clearances As
Viewed From Front of Heater
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114683-01B
INSTALLATION
Continued
THERMOSTAT SENSING BULB
(Thermostat Models Only)
The thermostat sensing bulb has been placed
below the heater.
1. Place clamp on thermostat sensing bulb as
shown in Figure 5. Clamp is provided in
hardware package.
2. Snap clamp into upper mounting hole as shown
in Figure 5. Mounting hole is located on lower
left edge on back of heater. Make sure the
thermostat sensing bulb is pointing up.
Clamp
Thermostat
Sensing Bulb
Figure 5 - Attaching Thermostat Sensing
Bulb
INSTALLING HEATER TO WALL
Mounting Bracket
Locate mounting bracket in heater carton. Remove
mounting bracket from heater carton.
Figure 7 - Removing Front Panel Of
Heater
Methods For Attaching Mounting Bracket
To Wall
Only use last hole on each end of mounting bracket
to attach bracket to wall. These two holes are 14
inches apart from their centers. Attach mounting
bracket to wall in one of two ways:
1. Attaching to wall stud
2. Attaching to wall anchor
Attaching to Wall Stud: This method provides the
strongest hold. Insert mounting screws through
mounting bracket and into wall studs.
Attaching to Wall Anchor: This method allows you
to attach mounting bracket to hollow walls (wall
areas between studs) or to solid walls (concrete
or masonry).
Decide which method better suits your needs.
Either method will provide a secure hold for the
mounting bracket.
Marking Screw Locations
1. Tape mounting bracket to wall where heater
will be located. Make sure mounting bracket
is level.
Figure 6 - Mounting Bracket
WARNING: Maintain mini-
mum clearances shown in Figure
Removing Front Panel Of Heater
1. Remove the four painted screws, two on each
side of front panel.
2. Pull bottom of front panel forward, then out.
3. Remove any remaining packaging materials.
114683-01B 9
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8, page 10. If you can, provide
greater clearances from floor
and joining wall.
INSTALLATION
32"
Min.
12"
Min.
14"
Ad j o inin g Wa l l
Only Insert Mounting
Screws Through Last
Hole On Each End
Floor
Continued
2. Mark screw locations on wall (see Figure 8).
Note: Only mark last hole on each end of
mounting bracket. Insert mounting screws
through these holes only.
3. Remove tape and mounting bracket from
Figure 8 - Mounting Bracket Clearances
Attaching Mounting Bracket To Wall
Note: Wall anchors, mounting screws and spacers
are in hardware package. The hardware package
is provided with heater.
Attaching To Wall Stud Method
For attaching mounting bracket to wall studs
1. Drill holes at marked locations using 9/64"
drill bit.
2. Place mounting bracket onto wall. Line up last
hole on each end of bracket with holes drilled
in wall.
3. Insert mounting screws through bracket and
into wall studs.
4. Tighten screws until mounting bracket is
firmly fastened to wall studs.
Attaching To Wall Anchor Method
For attaching mounting bracket 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" deep.
2. Fold wall anchor as shown in Figure 9.
3. Insert wall anchor (wings first) into hole. Tap
anchor flush to wall.
4. For thin walls (1/2" or less), insert red key
into wall anchor. Push red key to “pop” open
anchor wings. IMPORTANT: Do not hammer
key! For thick walls (over 1/2" thick) or solid
walls, do not pop open wings.
5. Place mounting bracket onto wall. Line up
last hole on each end of bracket with wall
anchors.
6. Insert mounting screws through bracket and
into wall anchors.
7. Tighten screws until mounting bracket is
firmly fastened to wall.
Figure 9 - Folding
Anchor
Figure 10 - Popping
Open Anchor Wings
For Thin Walls
Placing Heater On Mounting Bracket
1. Locate two horizontal slots on back panel of
heater.
2. Place heater onto mounting bracket. Slide
horizontal slots onto stand-out tabs on mount
ing bracket.
Horizontal Slots
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StandOut Tab
Mounting Bracket
(attached to wall)
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Figure 11 - Mounting Heater Onto
Mounting Bracket
114683-01B
Side View
Front View
INSTALLATION
Continued
Installing Bottom Mounting Screws
1. Locate two bottom mounting holes. These
holes are near bottom on back panel of heater
(see Figure 12).
2. Mark screw locations on wall.
3. Remove heater from mounting bracket.
4. If installing bottom mounting screws into
hollow or solid wall, install wall anchors.
Follow steps 1 through 4 under Attaching To
Wall Anchor Method
If installing bottom mounting screw into wall
stud, drill holes at marked locations using
9/64" drill bit.
5. Replace heater onto mounting bracket.
6. Place spacers between bottom mounting holes
and wall anchor or drilled hole.
7. Hold spacer in place with one hand. With other
hand, insert mounting screw through bottom
mounting hole and spacer. Place tip of screw
in opening of wall anchor or drilled hole.
8. Tighten both screws 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 12
through 14).
, page 10.
Heater
Wall
Spacer
Figure 12 - Installing Bottom Mounting
Screws
114683-01B 11
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INSTALLATION
Continued
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.
WARNING: For natural gas,
never connect heater to private (nonutility) gas wells. This gas is com
monly 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.
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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.
Typical Inlet Pipe Diameter
30,000 Btu/Hr Models - 1/2" or greater
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 15, page 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.
CAUTION: For propane/LP
gas, never connect heater directly
to the propane/LP supply. This
heater requires an external regu
lator (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 14. Pointing the vent down
protects it from freezing rain or sleet.
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WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Install sediment trap in supply line as shown in
Figure 15, page 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.
-
Propane/LP
Supply Tank
Figure 14 - External Regulator With Vent
External Regulator
Pointing Down
114683-01B
Vent
Pointing
Down
INSTALLATION
Continued
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.
Pressure
Regulator
3/8" NPT
Pipe Nipple
Tee Joint
Reducer
Bushing to
1/8" NPT
1/8" NPT
Plug Tap
Test Gauge Connection*
Tee Joint
Pipe
Nipple
Cap
Sediment Trap
Figure 15 - Gas Connection
* 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.
Natural Gas
From Gas Meter
(4" W.C. to 10.5" W.C.
Pressure)
Propane/LP
From External
Regulator
(11" W.C. to 14" W.C.
Pressure)
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.
Heater
Cabinet
Ground Joint
Union
Equipment
Shutoff
Valve*
3" Min.
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: 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 12.
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
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.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 16).
Equipment
Shutoff Valve
Open
Closed
-
Figure 16 - Equipment Shutoff Valve
114683-01B 13
www.desatech.com
INSTALLATION
Continued
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 17) or propane/LP supply tank for
propane/LP gas, to equipment shutoff valve
(see Figure 18). 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 16,
page 13).
2. For natural gas open main gas valve located
on or near gas meter. For propane/LP gas 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 thermostat gas valve (see Figure 17 or 18).
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, starting
on page 15). Check all other internal joints for
leaks.
7. Turn off heater (see To Turn Off Gas to Appli
ance, page 16 or 17, depending on your model
heater).
8. Replace front panel.
Thermostat Gas Valve
Gas
Meter
Equipment Shutoff Valve
Figure 17 - Checking Gas Joints for
Propane/LP
Supply Tank
Figure 18 - Checking Gas Joints for
-
Natural Gas
Thermostat Gas Valve
Equipment Shutoff Valve
Propane/LP Gas
14
www.desatech.com
114683-01B
OPERATING HEATER
OFF
IGNITOR
MANUAL CONTROL MODELS
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 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 tech
nician 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
1.
STOP! Read the safety information above.
2. Make sure equipme nt shuto ff valve is
fully open.
3. Press in and turn control knob clockwise
4. Wait five (5) minutes to clear out any gas.
114683-01B 15
to the OFF position.
Then smell for gas around heater and near
the floor. If you smell gas, STOP! Follow
“B” in the safety information above. If you
donʼt smell gas, go to the next step.
www.desatech.com
5. Press in control knob and turn counterclockwise
Keep control knob pressed in for five (5)
seconds (see Figure 19).
Note: You may be running this heater for
the first time after hooking up to gas sup
ply. 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.
• If control knob does not pop up when
released, contact a qualified service person
or gas supplier for repairs.
6. With control knob pressed in, push down
and release ignitor button. This will light
pilot. The pilot is attached to the front of
burner. If needed, keep pressing ignitor
button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, page 20. Also 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 16.
7. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob.
Note: If pilot goes out, repeat steps 3
through 7.
8. Press in and turn control knob counter
clockwise
control knob to desired heat setting.
-
CAUTION: Do not try to ad-
to the PILOT position.
to the HI position. Set
just heating levels by using the
equipment shutoff valve.
Ignitor Button
Figure 19 - Control Knob In The OFF
Figure 20 - Pilot (actual pilot may vary)
Control Knob
Position
Thermocouple
Ignitor Electrode
Pilot Burner
-
-
OPERATING HEATER
O
F
F
P
I
L
O
T
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Press in and turn control knob clockwise
2. Turn control knob clockwise
3. Turn off all electric power to the appliance
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise
PILOT position.
1. Remove front panel (see Figure 7, page 9).
2. Follow steps 1 through 5 under Lighting
3. With control knob pressed in, strike match.
4. Keep control knob pressed in for 30 seconds
5. Replace front panel.
low 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
B. BEFORE LIGHTING smell all around the
to the PILOT position.
to the
OFF position.
if service is to be performed.
to the
MANUAL LIGHTING
PROCEDURE
Instructions, page 15.
Hold match to pilot until pilot lights.
after lighting pilot. After 30 seconds, release
control knob. Now follow step 8, under
Lighting Instructions, page 15.
THERMOSTAT CONTROLLED
MODELS
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
lighted by hand. When lighting the pilot,
follow these instructions exactly.
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 tech
nician 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
1. STOP! Read the safety information, column 1.
2. Make sure equipme nt shuto ff valve is
fully open.
3. Turn control knob clockwise
OFF position.
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 1. 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 21).
Note: You may be running this heater for
the first time after hooking up to gas sup
ply. 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.
• If control knob does not pop up when
released, contact a qualified service person
or gas supplier for repairs.
Ignitor Button Control Knob
to the
-
-
Figure 21 - Control Knob In The OFF
Position
16
www.desatech.com
114683-01B
OPERATING HEATER
Continued
6. With control knob pressed in, push down
and release ignitor button. This will light
pilot. The pilot is attached to the front of
burner. The pilot is attached to the front of
the burner. If needed, keep pressing ignitor
button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, page 20. Also 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 up 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 inter
lock system. Wait one (1) minute before
lighting pilot again.
8. Turn control knob counterclockwise
to desired heating level. The main burner
should light. Set control knob to any heat
level between 1 and 5.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
Thermocouple
Ignitor Electrode
Pilot Burner
Figure 22 - Pilot (actual pilot may vary)
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
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.
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. The thermostat adjusts the
amount of gas flow to the burner. This increases
or decreases the burner flame height. 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. Selecting the 5
setting will cause the burner to remain fully on
without modulating down in most cases.
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.
MANUAL LIGHTING
PROCEDURE
1. Remove front panel (see Figure 7, page 9).
2. Follow steps 1 through 5 under Lighting
Instructions, page 16.
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 8, under
Lighting Instructions, column 1.
5. Replace front panel.
to the
to the
-
114683-01B 17
www.desatech.com
INSPECTING HEATER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern.
Figure 24 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 24
• turn heater off (see To Turn Off Gas to Appli
ance, page 16 or 17)
• see Troubleshooting
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.
Thermocouple
Figure 23 - Correct Pilot Flame Pattern
Thermocouple
Figure 24 - Incorrect Pilot Flame Pattern
, page 20
Blue Flame
Pilot Burner
Yellow Flame
Pilot
Burner
BURNER FLAME PATTERN
WARNING: If yellow tipping
occurs, your heater could produce increased levels of carbon
monoxide.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles enter the
heater and burn causing brief
patches of orange flame.
-
Figure 25 shows a correct burner flame pattern.
Figure 26 shows an incorrect burner flame pattern.
The incorrect burner flame pattern shows yellow
tipping of the flame. It also shows the flame higher
than 1/2 the heat shield height.
If burner flame pattern is incorrect, as shown in
Figure 26
• turn heater off (see To Turn Off Gas To Appli
ance, page 16 or 17)
• see Troubleshooting
Figure 25 - Correct Burner Flame Pattern
Figure 26 - Incorrect Burner Flame
, page 20
Pattern
1
/
1
/
Blue
Flame
Heat
Shield
2
Height
Yellow
Tipping
Heat
2
Shield
Height
-
18
www.desatech.com
114683-01B
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.
ODS/PILOT AND BURNER
Use a vacuum cleaner, pressurized air or small,
soft bristled brush to clean.
BURNER PILOT AIR INLET
The primary air inlet hole allows the proper
amount of air to mix with the gas. This provides a
clean burning flame. Keep this hole clear of dust,
dirt and lint. Clean this air inlet hole prior to each
heating season. A blocked air hole 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 donʼt 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 27). 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
Figure 27 - Pilot Inlet Air
(Propane/LP Pilot Shown)
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.
-
-
114683-01B 19
www.desatech.com
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,
there is no spark at ODS/pilot
When ignitor button is pressed,
there is spark at ODS/pilot but
no ignition
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
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 in
stalled
5. Depleted gas supply (propane/
LP gas only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
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 ignitor
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 con
trol knob. Repeat igniting op
eration 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 regulator
-
-
20
www.desatech.com
114683-01B
OBSERVED PROBLEM
ODS/pilot lights but flame goes
out when control knob is re
leased
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1.
Control knob not fully pressed in
-
2. Control knob not pressed in
long enough
3. Safety interlock system has
been triggered
4. Equipment shutoff valve not
fully open
5. Therm oco uple conn ectio n
loose at control valve
6. 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 partially clogged
ODS/pilot
7. Thermocouple damaged
8. Control valve damaged
-
-
REMEDY
1. Press in control knob fully
2.
After ODS/pilot lights, keep control knob pressed in 30 seconds
3. Wait one minute for safety interlock system to reset. Repeat
ignition operation
4. Fully open equipment shutoff
valve
5. Hand tighten until snug, then
tighten 1/4 turn more
6. A) Contact local natural or
propane/LP gas company
B) Cle a n ODS/pi l ot (see
Cleaning and Maintenance
page 19) or replace ODS/pilot
assembly
7. Replace pilot assembly
8. Replace control valve
,
Burner does not light after ODS/
pilot is lit
Delayed ignition of burner
Burner backfiring during combustion
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 (see Cleaning
and Maintenance, page 19)
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 (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 burner
3. Replace gas regulator
-
-
114683-01B 21
www.desatech.com
OBSERVED PROBLEM
Yellow flame during burner
combustion
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Not enough air
2. Gas regulator defective
3. Clogged or dirty burner
REMEDY
1. Check burner for dirt and
debris. If found, clean burner
(see Cleaning and Mainte-
nance, page 19)
2. Replace gas regulator
3. Clean burner (see Cleaning
and Maintenance, page 19)
Slight smoke or odor during initial
operation
Heater produces a whistling noise
when burner is lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Heater produces a clicking/tick
ing noise just after burner is lit
or shut off
1. Residues from manufacturing
processes
1. Turni ng control knob to 5
position when burner is cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partial ly clogg ed
burner orifice
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Metal expanding while heating
or contracting while cooling
1. Problem will stop after a few
hours of operation
1. Turn control knob to 1 posi
tion 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 Figure 4, page 8)
4. Clean burner (see Cleaning
and Maintenance, page 19)
or replace burner orifice
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
1. This is common with most heat
ers. If noise is excessive, contact
qualified service person
-
-
22
www.desatech.com
114683-01B
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.
OBSERVED PROBLEM
He a ter pro d u ces un w a nted
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 leak. Se e War ning
statement above
1. N o t e n o u g h f r e sh air is
available
2. Low line pressure
3. O D S/ pi l o t i s p ar ti al ly
clogged
1. Gas leak. Se e War ning
statement above
2. Control valve defective
1. Foreign matter between con
trol valve and burner
2. Gas leak. Se e War ning
statement above
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 13)
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 19)
1. Locate and correct all leaks
(see Checking Gas Connec
tions, page 13)
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 13)
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
-
-
-
-
114683-01B 23
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SPECIFICATIONS
BG30N, FG30N, GG30N, RG30N, GMG30N
BG30NT, FG30NT, GG30NT, RG30NT, GMG30NT
Btu (Variable) 15,000/30,000
Type Gas Natural Only
Ignition Piezo
Pressure Regulator Setting 3" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5"
Minimum 4"
Dimensions, Inches (H x W x D)
Heater 24
Carton 26
Weight (pounds)
Heater 28
Shipping 33
BG30P, FG30P, GG30P, RG30P, GMG30P
BG30PT, FG30PT, GG30PT, RG30PT, GMG30PT
Btu (Variable) 15,000/30,000
Type Gas Propane/LP Only
Ignition Piezo
Pressure Regulator Setting 8" W.C.
Inlet Gas Pressure (in. of water)
Maximum 14"
Minimum 11"
Dimensions, Inches (H x W x D)
Heater (Includes knobs & grill) 24
Carton 26
Weight (pounds)
Heater 28
Shipping 33
1
/4 x 25 3/4 x 7
3
/8 x 28 1/8 x 10
1
/4 x 25 3/4 x 7
3
/8 x 28 1/8 x 10
24
www.desatech.com
114683-01B
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, contact your local natural or propane/LP
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 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
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 31)
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
114683-01B 25
www.desatech.com
ILLUSTRATED PARTS BREAKDOWN
2
3
6
8
9
9
10
11
12
13
14
16
18
19
4
7
1
21
5
15
17
20
MODELS
BG30N, BG30P, FG30N, FG30P,
GG30N, GG30P, RG30N, RG30P,
GMG30N, GMG30P
26
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114683-01B
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.
PART NUMBER
BG30N BG30P
KEY FG30N FG30P RG30N RG30P
NO. GG30N GG30P GMG30N GMG30P DESCRIPTION QTY.
1 097159-04 097159-04 097159-04 097159-04 Piezo Ignitor 1
2 107676-01 107676-01 107676-01 107676-01 Front Panel 1
3 103476-02 103476-02 103476-02 103476-02 Grill Guard 1
4 110038-05 110038-06 110038-05 110038-06 Control Valve 1
5 098508-01 098508-01 098508-01 098508-01 Valve Retainer Nut 1
6 104658-01 104658-01 104658-01 104658-01 Heat Shield 1
7 ** ** ** ** Cabinet 1
8 107894-11 107894-11 107894-11 107894-11 Deflector Assembly 1
9 098271-09 098271-09 098271-09 098271-09 Ignitor Cable 1
10 098249-01 098249-01 098249-01 098249-01 Nut 2
11 110803-01 110803-02 110803-01 110803-02 ODS/Pilot Assembly 1
110186-01 110186-01 110186-01 110186-01 Thermocouple Kit 1
12 103447-01 103447-01 103447-01 103447-01 Burner 1
13 099387-05 099387-05 099387-05 099387-05 Pilot Tubing 1
14 103845-08 103845-07 103845-08 103845-07 Injector 1
15 099066-02 099066-02 099066-02 099066-02 Mounting Bracket 1
16 099415-17 099415-18 099415-17 099415-18 Gas Regulator 1
17 NJF 8C NJF 8C NJF 8C NJF 8C Hex Nut 1
18 103570-04 103570-04 103570-04 103570-04 Outlet Tubing 1
19 103572-03 103572-03 103572-03 103572-03 Inlet Tubing 1
20 109303-03 109303-03 109303-03 109303-03 Baffle 1
21 098354-02 098354-02 098354-02 098354-02 Control Knob 1
PARTS AVAILABLE — NOT SHOWN
100642-03 100642-03 100642-03 100642-03 Hardware Assembly 1
105345-01 105345-01 105345-01 105345-01 Cable Tie 1
107888-01 107888-01 107888-01 107888-01 Control Position Label 1
111051-01 111051-01 111051-01 111051-01 Lighting Instruction Label 1
** Not a field replaceable part.
114683-01B 27
www.desatech.com
ILLUSTRATED PARTS BREAKDOWN
2
3
8
9
10
10
11
12
13
14
16
18
19
4
7
1
15
17
6
5
MODELS
BG30NT, BG30PT, FG30NT, FG30PT,
GG30NT, GG30PT, RG30NT, RG30PT,
GMG30NT, GMG30PT
28
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114683-01B
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.
PART NUMBER
BG30NT BG30PT
KEY FG30NT FG30PT RG30NT RG30PT
NO. GG30NT GG30PT GMG30NT GMG30PT DESCRIPTION QTY.
1 097159-04 097159-04 097159-04 097159-04 Piezo Ignitor 1
2 107676-01 107676-01 107676-01 107676-01 Front Panel 1
3 103476-02 103476-02 103476-02 103476-02 Grill Guard 1
4 098522-12 098522-13 098522-12 098522-13 Thermostat Gas Valve 1
5 109303-03 109303-03 109303-03 109303-03 Baffle 1
6 104658-01 104658-01 104658-01 104658-01 Heat Shield 1
7 ** ** ** ** Cabinet 1
8 107894-11 107894-11 107894-11 107894-11 Deflector Assembly 1
9 098271-09 098271-09 098271-09 098271-09 Ignitor Cable 1
10 098249-01 098249-01 098249-01 098249-01 Nut 2
11 110803-01 110803-02 110803-01 110803-02 ODS/Pilot Assembly 1
110186-01 110186-01 110186-01 110186-01 Thermocouple Kit 1
12 103447-01 103447-01 103447-01 103447-01 Burner 1
13 099387-03 099387-03 099387-03 099387-03 Pilot Tubing 1
14 103845-08 103845-07 103845-08 103845-07 Injector 1
15 099066-02 099066-02 099066-02 099066-02 Mounting Bracket 1
16 099415-17 099415-18 099415-17 099415-18 Gas Regulator 1
17 NJF 8C NJF 8C NJF 8C NJF 8C Hex Nut 1
18 103255-02 103255-02 103255-02 103255-02 Outlet Tubing 1
19 103256-02 103256-02 103256-02 103256-02 Inlet Tubing 1
PARTS AVAILABLE — NOT SHOWN
100642-03 100642-03 100642-03 100642-03 Hardware Assembly 1
107888-01 107888-01 107888-01 107888-01 Control Position Label 1
111051-01 111051-01 111051-01 111051-01 Lighting Instruction Label 1
** Not a field replaceable part.
114683-01B 29
www.desatech.com
ACCESSORIES
Purchase these heater accessories from your local
dealer. If they can not supply these accessories, either
contact your nearest Parts Central (see page 31) 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.
FAN KITS - GA3250T
For all models. Provides better heat distribution.
Makes heater more efficient. Complete installation
and operating instructions included.
Thermostatically-controlled, blower turns itself on
and off as required.
ELECTRONIC IGNITOR KIT - GA435
Not Shown
For all piezo ignitor models. Provides easier
lighting of the pilot.
30
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114683-01B
PARTS CENTRALS
These Parts Centrals are privately owned businesses. They have agreed to support our customerʼs needs
by providing original replacement parts and accessories.
Tool & Equipment, Co.
5 Manila Ave
Hamden, CT 06514-0322
1-800-397-7553
203-248-7553
Parts Department
Portable Heater Parts
342 N. County Rd. 400 East
Valparaiso, IN 46383-9704
All States
219-462-7441
1-888-619-7060
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
Fax: 616-791-8270
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 Products
707 Broadway
W. Long Branch, NJ 07764-1542
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, Inc.
P.O. Box 645
Taylor, SC 29687-0013
All States
803-879-3009
1-800-845-5301
cuisales@aol.com
114683-01B 31
www.desatech.com
WARRANTY INFORMATION
114683 01
KEEP THIS WARRANTY
Model ____________________________________
Serial No. __________________________________
Date of Purchase ____________________________
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 RESIDENTIAL GAS HEATERS
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 Heat
ing 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, INCLUD
ING 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
NOT A UPC
114683-01
Rev. B
07/04
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