Desa 150 User manual

PORTABLE
FORCED
AIR HEATER
(WITH BUILT-IN THERMOSTAT)
OWNER’S MANUAL
50 SIDE
Heater Sizes: 70,000 110,000 150,000 and 165,000 Btu/Hr
IMPORTANT
Read and understand this manual before assembling, starting, or servicing
heater. Improper use of heater can cause serious injury. Keep this manual
for future reference.
ARL LOGO G 004
®

2
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
SAFETY
INFORMATION
Carbon Monoxide Poisoning: Early
signs of carbon monoxide poisoning re-
semble the flu, with headaches, dizziness,
and/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 preg-
nant women, persons with heart or lung
diseaseoranemia,thoseundertheinfluence
of alcohol, and those at high altitudes.
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.
DANGER: Carbon monoxide
poisoning may lead to death!
• Use only kerosene or No. 1 fuel oil to
avoidrisk offire orexplosion. Neveruse
gasoline, naphtha, paint thinners, alco-
hol, or other highly flammable fuels.
• Fueling
a)Personnelinvolved with fuelingshall
be qualified and thoroughly familiar
with the manufacturer's instructions
and applicable federal, state, and lo-
cal regulations regarding the safe
fueling of heating units.
WARNINGS
IMPORTANT: Read this Owner’s
Manual carefully and completely
before trying to assemble, oper-
ate, or service this heater. Im-
proper use of this heater can
causeseriousinjuryordeathfrom
burns, fire, explosion, electrical
shock, and carbon monoxide
poisoning.
b)Only the type of fuel specified on the
heater's data plate shall be used.
c) All flame, including the pilot light, if
any,shallbeextinguishedandtheheater
allowed to cool, prior to fueling.
d)During fueling,all fuel linesand fuel-
lineconnections shallbe inspectedfor
leaks.Anyleaks shallberepairedprior
to returning the heater to service.
e)At no time shall more than one day's
supply of heater fuel be stored inside
abuilding in thevicinity oftheheater.
Bulk fuel storage shall be outside the
structure.
f) All fuel storage shall be located a
minimum of 25 feet from heaters,
torches, welding equipment, and
similar sources of ignition (excep-
tion: the fuel reservoir integral with
the heater unit).
g)Whenever possible,fuelstorage shall
beconfinedto areas where floorpen-
etrations do not permit fuel to drip
onto or be ignited by a fire at lower
elevation.
h)Fuel storage shall be in accordance
with the federal, state, or local au-
thority having jurisdiction.
• Never use heater where gasoline, paint
thinner, or other highly flammable va-
pors are present.
• Follow all local ordinances and codes
when using heater.
• Heaters used in the vicinity of tarpau-
lins, canvas, or similar enclosure ma-
terials shall be located a safe distance
fromsuch materials.The recommended
minimum safe distance is 10 feet. It is
further recommended that these enclo-
sure materials be of a fire retardant na-
ture.These enclosure materialsshallbe
securely fastened to prevent them from
igniting or from upsetting the heater
due to wind action.
• Use only in well vented areas. Before
using heater, provide at least a three-
square-foot opening of fresh, outside
air for each 100,000 Btu/Hr of rating.
Thisheaterproduces carbon monoxide,
which is listed by the State of Califor-
niaas a reproductivetoxin underPropo-
sition 65.
• Use only in places free of flammable
vapors or high dust content.
• Useonlywith the electrical voltageand
frequency specified on model plate.
• Use only a three-prong, grounded ex-
tension cord.
• Minimum heater clearances from com-
bustibles:
Outlet: 8 Ft. Sides: 4 Ft.
Top: 4 Ft. Rear: 4 Ft.
• Locate heater on a stable and level sur-
face while hot or running or a fire may
occur.
• When moving or storing heater, keep
heater in a level position or fuel spill-
age may occur.
• Keep children and animals away from
heater.
• Unplug heater when not in use.
• This heater is equipped with a thermo-
stat. Heater may start at anytime.
• Never use heater in living or sleeping
areas.
• Never block air inlet (rear) or air outlet
(front) of heater.
• Never move, handle, refuel, or service
a hot, operating, or plugged-in heater.
• Never attach duct work to front or rear
of heater.

3
103301
OWNER’S MANUAL
PRODUCT
IDENTIFICATION
Thermostat Knob
Side Cover
Lower
Shell
Fuel Cap
Fan Guard
Power Cord
Hot Air
Outlet Upper Shell
Fuel Tank
Flame-Out
Control Reset
Button
70,000 Btu/Hr Model
Upper Shell
Hot Air
Outlet
Lower
Shell
Fuel Tank
Side Cover
Flame-Out Control
Reset Button
Power Cord
Fuel Cap
Fan Guard
Air Filter
End Cover
110,000 150,000 and 165,000 Btu/Hr Models
1. Remove all packing items applied to
heater for shipment.
2. Remove all items from carton.
3. Check items for shipping damage. If
heater is damaged, promptly inform
dealer where you bought heater.
UNPACKING

4
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
WARNING:Useonlykerosene
orNo.1fueloiltoavoidriskoffire
or explosion. Never use gaso-
line, naphtha, paint thinners, al-
cohol, or other highly flammable
fuels.
Donotuse heavyfuelssuch asNo.2 fueloil
or No. 2 Diesel. Using heavy fuels will
result in:
• clogged fuel filter and nozzle
• carbon build up on spark plug
• the need of non-toxic anti-icer in fuel
during very cold weather
IMPORTANT: Use a KEROSENE ONLY
storagecontainer.Besure storagecontainer
is clean. Foreign matter such as rust, dirt, or
water will cause the flame-out control to
shut down heater. Foreign matter may also
require you to clean fuel system often.
FUELS
The 110,000 150,000 and 165,000 Btu/Hr
models are furnished with wheels and
handle(s). Wheels, handle(s), and the mount-
inghardwarearefoundintheshippingcarton.
TOOLS NEEDED
• Medium Phillips Screwdriver
• 3/8" Open or Adjustable Wrench
• Hammer
1. Slide axle through wheel support
frame. Install wheels on axle.
IMPORTANT: When installingwheels,
point extended hub of wheels toward
wheel support frame (see Figure 1).
ASSEMBLY
Front
Handle
Extended
Hub
Axle
Cap Nut
Wheel Nut
Wheel
Support
Frame
Fuel
Tank
Flange
Air
Inlet
Hot Air
Outlet
Screw
Rear
Handle
(if equipped)
Figure 1 - Wheel and Handle Assembly
2. Place cap nuts on axle ends. Gently tap
with hammer to secure.
3. Place heater on wheel support frame.
Make sure air inlet end (rear) of heater
is over wheels. Line up holes on fuel
tank flange with holes on wheel sup-
port frame.
4. Place handle(s) on top of fuel tank
flange.Insertscrews through handle(s),
fuel tank flange, and wheel support
frame.Attach nut finger tight after each
screw is inserted.
5. After all screws are inserted, tighten
nuts firmly.
VENTILATION
WARNING: Follow the mini-
mum fresh, outside air ventila-
tionrequirements.Ifproperfresh,
outside air ventilation is not pro-
vided, carbon monoxide poison-
ing can occur. Provide proper
fresh, outside air ventilation be-
fore running heater.
Provideatleastathree-square-foot opening
offresh,outsideairforeach100,000Btu/Hr
rating. Provide extra fresh air if more heat-
ers are being used. Example: A 165,000
Btu/Hrheaterrequiresoneofthefollowing:
• a two-car garage door (16 foot wide
opening) raised four inches
• a single-car garage door (9 foot wide
opening) raised seven inches
• two windows (30 inch wide opening,
each) raised twelve inches

5
103301
OWNER’S MANUAL
THEORY OF
OPERATION
The Fuel System: The air pump forces
air through the air line. The air is then
pushedthroughtheburnerheadnozzle.This
air causes fuel to lift from the tank. A fine
mist of fuel is sprayed into the combustion
chamber.
TheAir System: Themotorturnsthefan.
The fan pushes air into and around the
combustion chamber. This air is heated and
provides a stream of clean, hot air.
The Ignition System: The electronic
ignitor sends voltage to the spark plug. The
spark plug ignites the fuel and air mixture.
The Flame-Out Control System: This
system causes the heater to shut down if the
flame goes out.
THEORY CUTAWAY PFA/OV 003
Fuel
Filter
Air For Fuel
System Air For Combustion
And Heating Fuel
Combustion
Chamber Air Intake
Filter
Clean
Heated
Air Out
Cool
Air
In
Air
Output
Filter
Fuel
Tank
Figure 2 - Cross Section Operational View
Burner
Head
Spark
Plug
Motor
Fan
Electronic
Ignitor
Air Line
To Burner
Nozzle
Air Pump
OPERATION
WARNING: Review and un-
derstand the warnings in the
Safety Information section, page
2. They are needed to safely op-
erate this heater. Follow all local
codes when using this heater.
TO START HEATER
1. Follow all ventilation and safety infor-
mation.
2. Fill fuel tank with kerosene or No. 1
fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into three-
prong,groundedextension cord.Exten-
sion cord must be at least six feet long.
ExtensionCordWireSizeRequire-
ments
6to 10feet long,use18AWG ratedcord
11 to 100 feet long, use 16 AWG
rated cord
101 to 200 feet long, use 14 AWG
rated cord
5. Plug extension cord into standard 120
volt/60hertz,three-hole, grounded out-
let.Adjust thermostatto desired setting.
If heater does not start, thermostat set-
ting may be too low. Turn thermostat
knob to higher position to start heater.
If thermostat is in HIGH position and
heater still will not start, push in flame-
out control reset button (see Figure 3).
TO STOP HEATER
Unplug extension cord from outlet.
TO RESTART HEATER
1. Wait 2 minutes after stopping heater.
2. Repeat steps under To Start Heater.
Flame-Out Control
Reset Button
Flame-Out Control
Reset Button
Figure3-Flame-OutControlResetButton
110,000 150,000 and 165,000 Btu/Hr
Models
70,000 Btu/Hr Model

6
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
STORING,
TRANSPORTING,
OR SHIPPING
Note: If shipping, transport companies re-
quire fuel tanks to be empty.
1. Drain fuel tank.
Note: Some models have drain plug on
underside of fuel tank. If so, remove
drain plug to drain all fuel. If heater
does not have drain plug, drain fuel
through fuel cap opening. Be sure all
fuel is removed.
2. Replace drain plug if provided.
3. If any debris is noted in old fuel, add 1
or 2 quarts of clean kerosene to tank,
stir, and drain again. This will prevent
excess debris from clogging filters dur-
ing future use.
4. Replace fuel cap or drain plug. Prop-
erlydisposeof oldanddirty fuel.Check
with local automotive service stations
that recycle oil.
5. If storing, store heater in dry place.
Make sure storage place is free of dust
and corrosive fumes.
IMPORTANT: Do not store kerosene over
summer months for use during next heating
season.Usingoldfuelcoulddamageheater.
Item How Often How To
Fuel tank Flush every 150-200 hours See Storing, Transporting, or
of operation or as needed Shipping, column 1
Air output and Replace every 500 hours of See Air Output, Air Intake,
lint filters operation or once a year and Lint Filters, page 8
Air intake Wash and dry with soap and See Air Output, Air Intake,
filter water every 500 hours of op- and Lint Filters, page 8
eration or replace as needed
Fuel filter Clean twice a heating season See Fuel Filter, page 9
or replace as needed
Spark plug Clean and regap every 600 See Spark Plug, page 9
hours operation or replace
as needed
Fan blades Clean each season or as needed See Fan, page 8
Motor Not required/permanently lubricated
WARNING:Neverserviceheaterwhile
itispluggedin,operating,or hot. Severe
burns and electrical shock can occur.
PREVENTATIVE
MAINTENANCE
SCHEDULE

7
103301
OWNER’S MANUAL
POSSIBLE CAUSE
1. Wrong pump pressure
2. Dirty air output, air intake and lint filters
3. Dirty fuel filter
4. Dirt in nozzle
5. Dirty photocell lens
6. Bad flame-out control
1. Wrong pump pressure
2. Carbon deposits on spark plug and/or
improper gap
3. Dirty fuel filter
4. Dirt in nozzle
5. Water in fuel tank
6. Electronic ignitor not grounded
7. Bad electronic ignitor
1. Thermostat setting is too low
2. Flame-out control not reset
3. Solid state relay not allowed to reset
4. Binding pump rotor
OBSERVED FAULT
Heater ignites, but flame-out control shuts
off heater after a short period of time
Heater will not ignite, but motor runs for a
short period of time
Motordoes notstartwhen heateris plugged
in, fan rotates slowly or does not turn
WARNING:Neverserviceheaterwhileitispluggedin,operating,or
hot. Severe burns and electrical shock can occur.
REMEDY
1. See Pump Pressure Adjustment, page 9
2. See Air Output, Air Intake and Lint Fil-
ters, page 8
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Clean photocell lens
6. Replace flame-out control
1. See Pump Pressure Adjustment, page 9
2. See Spark Plug, page 9
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Drain and flush fuel tank with clean
kerosene
6. See Storing Transporting, or Shipping,
page 6
7. Make sure electronic ignitor mounting
is tight.Replace electronic ignitor
1. Turn thermostat knob to a higher setting
2. Press flame-out control reset button
3. Wait two minutes before trying to restart
heater
4. If fan is hard to turn, see Pump Rotor,
page 10
TROUBLESHOOTING
WARNING:Highvoltage!

8
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
50 AIR FILTER REMOVAL PFA/P 044
R
REMOVAL PFA/P 047
SERVICE
PROCEDURES
UPPER SHELL REMOVAL
1. Remove screws along each side of
heater using 5/16" nut-driver. These
screws attach upper and lower shells
together.
2. Lift upper shell off.
3. Remove fan guard.
WARNING: Never service
heater while it is plugged in, op-
erating,orhot. Severe burns and
electrical shock can occur.
Figure 5 - Fan Cross Section
Figure 6 - Air Output, Air Intake, and Lint
Filters
Upper
Shell Fan
Guard
Fan
Guard
Upper
Shell
70,000 Btu/Hr Model
110,000 150,000 and 165,000 Btu/Hr
Models
Fan
Setscrew
Motor
Motor
Shaft
Flush
Fan Guard
Filter End
Cover
Air Intake
Filter
Lint Filter
70,000 Btu/Hr Model
110,000 150,000 and 165,000 Btu/Hr
Models
Air Output
Filter
Air Intake
Filter
Air Output
Filter
Fan Guard
Filter End
Cover
Lint Filter
Figure 4 - Upper Shell Removal
AIR OUTPUT, AIR INTAKE,
AND LINT FILTERS
1. Remove upper shell (see column 1).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover.
4. Replace air output and lint filters.
5. Wash or replace air intake filter (see
Preventative Maintenance Schedule,
page 6).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
FAN
IMPORTANT: Remove fan from motor
shaft before removing motor from heater.
The weight of the motor resting on the fan
could damage the fan pitch.
1. Remove upper shell (see column 1).
2. Use 1/8" allen wrench to loosen set-
screw which holds fan to motor shaft.
3. Slip fan off motor shaft.
4. Clean fan using soft cloth moistened
with kerosene or solvent.
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Place fan
hub flush with end of motor shaft (see
Figure 5).
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds).
8. Replace fan guard and upper shell.

9
103301
OWNER’S MANUAL
PUMP PRESSURE
ADJUSTMENT
1. Remove pressuregauge plug fromfilter
end cover.
2. Install accessory pressure gauge (part
number HA1180).
3. Start heater (see Operation, page 5).
Allow motor to reach full speed.
4. Adjust pressure. Turn relief valve to
right to increase pressure. Turn relief
valve to left to decrease pressure.
Correct Pump Pressure
70,000 Btu/Hr Model: 4.0 PSI
110,000 Btu/Hr Model: 4.5 PSI
150,000 Btu/Hr Model: 5.0 PSI
165,000 Btu/Hr Model: 5.4 PSI
5. Remove pressure gauge. Replace pres-
sure gauge plug in filter end cover.
FUEL FILTER
1. Remove side cover screws using 5/16"
nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter neck.
4. Carefully pry bushing, fuel filter, and
lower fuel line (110,000, 150,000 and
165,000 Btu/Hr models only) out of
fuel tank.
5. Wash fuel filter with clean fuel and re-
place in tank.
6. Attach upperfuel line tofuelfilter neck.
7. Replace side cover.
Figure 8 - Adjusting Pump Pressure
Figure 7 - Pressure Gauge Plug Removal
Pressure
Gauge
(110,000 150,000 and
165,000 Btu/Hr Models
Shown)
Pressure
Gauge Plug
(110,000 150,000 and
165,000 Btu/Hr Models
Shown)
Relief
Valve
Location
Side Cover
Fuel Filter,
Bushing, and
Lower Fuel Line
Upper Fuel Line
70,000 Btu/Hr Model
Fuel Filter
Side Cover Upper Fuel Line
110,000 150,000 and 165,000 Btu/Hr
Models
Figure 9 - Fuel Filter Removal
SERVICE
PROCEDURES
Continued
SPARK PLUG
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
3. Removesparkplugwirefromsparkplug.
4. Remove spark plug from burner head
using 13/16" open-end wrench.
5. Cleanandregap spark plug electrodes
as follows:
70,000 Btu/Hr Model – .055" gap
110,000 and 150,000 Btu/Hr Models
– .075" gap
165,000 Btu/Hr Model – .085" gap
6. Install spark plug in burner head.
7. Attach spark plug wire to spark plug.
8. Replace fan (see page 8).
9. Replace fan guard and upper shell.
Spark Plug
Wire
Burner
Head
Figure 10 - Spark Plug Removal
Figure 11 - Spark Plug Gap
Gap
Spark
Plug
Bend Here to Adjust Gap
Continued

10
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
100 ROTOR-Domestic PFA/P 059A
PUMP ROTOR
(Procedure if rotor is binding)
1. Remove upper shell (see page 8).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover and air filters.
4. Remove pumpplatescrews using 5/16"
nut-driver.
5. Remove pump plate.
6. Remove rotor, insert, and blades.
7. Check for debris in pump. If debris is
found, blow out with compressed air.
8. Install insert and rotor.
9. Check gap on rotor. Adjust to .003"/
.004" if needed (see Figure 15).
Note: Rotate rotor one full turn to in-
sure the gap is .003"/.004" at tightest
position. Adjust if needed.
10. Install blades, pump plate, air filters,
and filter end cover.
11. Replace fan guard and upper shell.
12. Adjust pump pressure (see page 9).
Note: If rotor is still binding, proceed
as follows.
13. Perform steps 1 through 6 above.
14. Place fine grade sandpaper (600 grit)
on flat surface. Sand rotor lightly in
“figure 8” motion four times (see Fig-
ure 16).
15. Reinstall insert and rotor.
16. Perform steps 10 through 12 above.
50 ROTOR-Domestic PFA/P 056B
Blade Pump Plate
Air Intake Filter
Filter End
Cover
Fan Guard
Air Output
Filter
Insert
70,000 Btu/Hr Model
Blade
Air Output
Filter
Figure 14 - Rotor Location
Fan Guard
Filter End
Cover
Air Intake Filter
Pump Plate
110,000 150,000 and 165,000 Btu/Hr
Models
Rotor
Insert Rotor
ROTOR GAP ADJUST PFA/OV 007
ROTOR ON SANDPAPER PFA/OV 008
Figure 16 - Sanding Rotor
Sandpaper
.003"/.004"
Gap
Measured
With Feeler
Gauge
Gap Adjusting Screw
Gap Adjusting Screw
Rotor
Figure 15 - Gap Adjusting Screw
Locations
Blade
NOZZLE
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
3. Remove fuel and air line hoses from
burner head.
4. Removesparkplug wirefromsparkplug.
5. Remove spark plug from burner head
using 13/16" open-end wrench.
6. Remove three screws using 5/16" nut-
driver and remove burner head from
combustion chamber.
7. Place burner head into vise and lightly
tighten.
8. Carefully remove nozzle from burner
headusing5/8" socketwrench(see Fig-
ure 13).
9. Blow compressed air through face of
nozzle. This will free any dirt in
nozzle area.
10. Inspect nozzle seal for damage.
11. Replace nozzle into burner head and
tighten firmly (80-110 inch-pounds).
12. Attach burner head to combustion
chamber.
13. Install spark plug in burner head.
14. Attach spark plug wire to spark plug.
15. Attach fuel and airline hoses to burner
head.
16. Replace fan (see page 8).
17. Replace fan guard and upper shell.
Burner Head
Spark
Plug
Combustion
Chamber
Figure 13 - Removing Nozzle
Nozzle
Seal
Nozzle Face
Nozzle
Burner Head
Fuel Line
Fitting
Air Line Fitting
Figure 12 - Removing Burner Head
Spark Plug
Wire
Screw
Air Line Hose
Fuel Line Hose
SERVICE
PROCEDURES
Continued

11
103301
OWNER’S MANUAL
SPECIFICATIONS
Output Rating (Btu/Hr.) 70,000 110,000 150,000 165,000
Fuel Use Only Kerosene or No. 1 Fuel Oil
Fuel Tank Capacity
(U.S. Gal.) 5.0 9.0 13.5 13.5
Fuel Consumption
(Gal. Per Hr.) 0.52 0.82 1.10 1.20
Electric Requirements 120 V/60 Hz (Same all models)
Amperage (Normal Run) 2.5 4.5 4.5 4.5
Hot Air Output (CFM) 250 490 500 500
Motor RPM 3450 (Same all models)
Motor HP 1/8 1/5 1/5 1/4
Shipping Weight (Appox. lbs.) 37 58 67 69
Heater Weight Without Fuel
(Appox. lbs.) 32 49 56 58
MAINTENANCE KITS
WIRING DIAGRAM
White
Black
Blue
Green
Green/
Yellow
Power Plug
120V/60Hz
Photocell
Spark Plug
Ignitor Burner
Control
B
Reset
Button
R
Red
Motor Blue
White
White
White
White
Red
Red
Green Terminal
Board
Red
Relay
Black
Thermostat
Black
Kit 70,000 110,000 150,000 165,000
Flame-Out Control HA3003 HA3003 HA3003 HA3003
Spark Plug HA3012 HA3012 HA3012 HA3012
Air Gauge Kit HA1180 HA1180 HA1180 HA1180
Fuel Tank Filter Screen HA2210 HA2210 HA2210 HA2210
Filter Kit HA3014 HA3017 HA3017 HA3017
Nozzle Kit HA3008 HA3022 HA3010 HA3023
Rotor/Air Pump Kit HA3004 HA3004 HA3004 HA3004
Photocell HA3019 HA3019 HA3019 HA3019
Pump Adjustment HA3020 HA3020 HA3020 HA3020
Handle ——— HA2203 HA2204 HA2204
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting. If
so, contact DESA International’s Technical
Service Department at 1-800-323-5190.
Note: Use only original replacement parts.
Thiswillprotectyourwarrantycoveragefor
parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealer from whom you
purchased this product. If they cannot sup-
plyoriginal replacementpart(s), callDESA
International’s Technical Service Depart-
ment at 1-800-323-5190 for referral infor-
mation.
When contacting your dealer or DESA In-
ternational, have ready:
• your name
• your address
• model number of your heater
• how heater was malfunctioning
• purchase date
Usually,wewillaskyoutoreturnthedefec-
tive part to the factory.
PARTS NOT UNDER
WARRANTY
Contact authorized dealers of this product.
If they cannot supply original replacement
part(s), call DESA International’s Parts
Department at 1-800-972-7879 for referral
information.
When calling DESA International, have
ready:
• model number of your heater
• the replacement part number
REPLACEMENT
PARTS

12
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
1
2
5
4
3
76
8
9
10
21
11
15
16
20
17
12
19
23
24
26
22
25
27
30
14
32
31
35
36
18
39
40
38 37
13
41
29
28
33 34
42
44 43
47
46
45
ILLUSTRATED
PARTS
BREAKDOWN
70,000 BTU/HR
12-1 12-2 12-312-4 12-5
12-7
12-812-9
12-10
12-11
12-12
12-14
12-15
12-16
12-1812-17
12-6
12-13
9-1
9-2
9-7
9-4
9-3
9-5
9-6
Burner Head Assembly
Motor and Pump Assembly

13
103301
OWNER’S MANUAL
KEY PART PART
NO. NUMBER DESCRIPTION QTY.
1 M51104-01 Handle 1
2 098511-54 Upper Shell (B70BT) 1
098511-36 Upper Shell (R70CT) 1
3 M11084-29 Screw, #10-16 x 3/4" 2
4 100647-01 Screw, #10-16 x 1/2" 6
5 098512-44 Combustion Chamber 1
6 M10908-2 Screw, #6-32 x 3/8" 2
7 M16660 Photocell Bracket 1
8 HA3019 Photocell Assembly 1
9 *** Burner Head Assembly 1
9-1 HA3008 Nozzle with Sleeve 1
9-2 M10659-1 Nozzle Seal Washer 2
9-3 M10809-1 Nozzle Seal Spring 1
9-4 M8882 Nozzle Sleeve 1
9-5 M51098-02 Burner Head Body 1
9-6 M50820-01 Barb Fitting 2
9-7 HA3012 Spark Plug 1
10 M11084-27 Screw, #10-16 x 1/2" 3
11 M51107-01 Fan 1
12 *** Motor and Pump Assembly 1
12-1 097308-02 Motor 1
12-2 079975-02 Pump Body 1
12-3 M22009** Insert 1
12-4 M22456-1** Rotor 1
12-5 M29608 Pump End Cover 1
12-6 M29632** Lint Filter 1
12-7 M29633** Intake Filter 1
12-8 M29609 Filter End Cover 1
12-9 M12461-31 Screw, #10-32 x 1" 3
12-10 M27694** Adjusting Screw 1
12-11 M10993-1** Pressure Relief Spring 1
12-12 M22997** Plug 1
12-13 M8940** Steel Ball (1/4" Dia.) 1
12-14 M29612-01** Output Filter 1
12-15 M12461-31 Screw, #10-32 x 1" 6
12-16 M50016 Elbow, 90˚ (Barb Fitting) 1
12-17 M8643** Blade 4
12-18 FHPF3-5C Screw, #10-32 x 5/8" 2
13 M51105-01 Fan Guard 1
14 M16841-57 Wire Assembly (Red, 6" ) 1
15 097061-01 Solid State Relay 1
16 M15823-39 Screw, #8-18 x 1/2" 2
17 NTC-4C Hex Lock Nut, 1/4-20 2
18 098513-78 Fuel Tank (B70BT) 1
098513-77 Fuel Tank (R70CT) 1
19 M50631 Rubber Bumper 2
20 101205-01 Motor Bracket 1
Thislist containsreplaceable partsused inyourheater.Whenorderingparts,besureto providethe
correct model and serial numbers (from the model plate), then the part number and description of
the desired part.
KEY PART PART
NO. NUMBER DESCRIPTION QTY.
PARTS LIST
70,000 BTU/HR
** See OPTIONAL ACCESSORIES
*** Not available as an assembly.
21 M30865-02 Bushing 2
22 M11271-8 Clip Nut 6
23 M50104-02 Bushing 1
24 M11084-26 Screw, #10-16 x 3/8" 6
25 M10908-14 Screw, #8-32 x 3/8" 1
26 098511-12 Lower Shell (B70BT) 1
098511-18 Lower Shell (R70CT) 1
27 M29652-04 Airline 1
28 102482-01 Ignitor Kit 1
29 M11084-29 Screw, #10-16 x 3/4" 2
30 079973-01 Fuel Line 1
31 M50876-05 Fuel Filter (With Bushing) 1
32 M10990-3 Rubber Bushing 1
33 099125-03 Terminal Board 1
34 099157-01 Rivet 1
35 HA3003 Flame-Out Control 1
36 097702-01 Fuel Cap Kit
(Includes Gasket) 1
37 098219-27 Power Cord 1
38 M11143-1 Strain Relief Bushing 1
39 M11084-26 Screw, #10-16 x 3/8" 2
40 M50899-03AA Side Cover 1
41 079010-18 Wire Assembly (Red, 16") 1
42 099177-01 Hex Nut 1
43 M51017-01 Cushion Grommet (B70BT) 3
44 M27417 Drain Plug (B70BT)
(Includes “O” Ring) 1
45 097657-02 Thermostat 1
46 M10908-1 Screw, #6-32 x 1/4" 2
47 104905-01 Thermostat Knob 1
PARTS AVAILABLE - NOT SHOWN
101118-02 General Info. Decal (B70BT) 1
101118-01 General Info. Decal (R70CT) 1
M9900-192 Combustion Chamber
Ground Wire 1
099650-01 Wire Clip (Secures thermostat
and power cord wires) 1
OPTIONAL ACCESSORIES
HA3004 Rotor Kit (M22456-1,
M22009, M8643)
HA3014 Filter Kit (M29632, M29633,
M29612-01)
HA3020 Pump Kit (M27694,
M10993-1, M22997, M8940)

14
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
1
2
3
4
5
6
7
8
23 19
910
16
11
12
15
25
26
27
24
28
29
20
22
21
30
31
41
33 34
35
36
26
14
13
40
39
17
18
32
37
38
42
43
46
45
44
ILLUSTRATED
PARTS
BREAKDOWN
110,000 150,000 AND
165,000 BTU/HR
Motor and Pump Assembly
7-1
7-2
Burner Head Assembly
7-7
7-3
7-4
7-5
7-6
10-16
10-17
10-15
10-13 10-14
10-13
10-12
10-11
10-10
10-9
10-8
10-7
10-6
10-5
10-4
10-3
10-2
10-1

15
103301
OWNER’S MANUAL
PARTS LIST
110,000 150,000 AND
165,000 BTU/HR
This list contains replaceable parts used in your heater. When ordering parts, be sure to
provide the correct model and serial numbers (from the model plate), then the part number
and description of the desired part.
KEY PART
NO. NUMBER DESCRIPTION QTY.
KEY PART
NO. NUMBER DESCRIPTION QTY.
1 098511-138 Upper Shell (Yellow) 1
098511-135 Upper Shell (White) 1
2 100647-01 Screw, #10-16 x 1/2" 8
3 098512-31 Combustion Chamber (110) 1
098512-37 Combustion Chamber (150) 1
098512-36 Combustion Chamber (165) 1
4 M16660 Photocell Bracket (110) 1
099229-01 Photocell Bracket (150/165) 1
5 M10908-2 Screw, #6-32 x 3/8" 2
6 HA3019 Photocell Assembly 1
7 *** Burner Head Assembly 1
7-1 HA3009 Nozzle with Sleeve (110) 1
HA3011 Nozzle with Sleeve (150) 1
HA3023 Nozzle with Sleeve (165) 1
7-2 M10659-1 Nozzle Washer 2
7-3 M10809-1 Nozzle Spring 1
7-4 M8882 Nozzle Sleeve 1
7-5 M50924-03 Burner Head Body (110) 1
M50924-07 Burner Head Body (150/165) 1
7-6 M50820-02 Barb Fitting 2
7-7 HA3012 Spark Plug 1
8 M11084-27 Screw, #10-16 x 1/2" 3
9 097293-01 Fan (110/150) 1
101897-01 Fan (165) 1
10 *** Motor and Pump Assembly 1
10-1 097300-02 Motor (110/150) 1
102001-07 Motor (165) 1
10-2 079975-02 Pump Body 1
10-3 FHPF3-5C Screw, #10-32 x 5/8" 2
10-4 M22009** Rotor Insert 1
10-5 M22456-1** Pump Rotor 1
10-6 M50545 Pump End Cover 1
10-7 M12179** Intake Filter 1
10-8 M16545 Filter End Cover 1
10-9 M8940** Steel Ball, 1/4" Diameter 1
10-10 M10993-1** Relief Spring 1
10-11 M27694** Adjusting Screw 1
10-12 M22997** Plug 1
10-13 M12461-31 Screw, #10-32 x 1" 10
10-14 M12244-1** Output Filter 1
10-15 M11637** Lint Filter 1
10-16 M50820-02 Barb Fitting 1
10-17 M8643** Blade 4
11 M50631 Rubber Bumper 2
12 101206-01 Motor Mounting Bracket 1
13 097061-01 Solid State Relay 1
14 M15823-39 Screw, #8-18 x 1/2" 2
15 NTC-4C Hex Lock Nut, 1/4-20 2
16 M51114-01 Fan Guard 1
17 102482-01 Ignitor Kit 1
** See OPTIONAL ACCESSORIES
*** Not available as an assembly.
18 M11084-29 Screw, #10-16 x 3/4" 2
19 M51345-01 Fuel Line 1
20 M51150-01** Fuel Filter 1
21 M51151-01 Fuel Line Tube (110 model) 1
M51151-02 Fuel Line Tube (150/165) 1
22 M10990-3 Rubber Bushing 1
23 M50814-03 Airline 1
24 098511-140 Lower Shell (Yellow) 1
098511-137 Lower Shell (White) 1
25 M50104-03 Bushing 2
26 M50104-01 Bushing 2
27 M11084-27 Screw, #10-16 x 1/2" 6
28 M11271-8 Clip Nut 8
29 M10908-14 Screw, #8-32 x 3/8" 1
30 098513-87 Fuel Tank (110) 1
098513-67 Fuel Tank (150/165) 1
31 097702-01 Fuel Cap (Includes Gasket) 1
32 HA3003 Flame-Out Control 1
33 M11143-1 Strain Relief Bushing 1
34 098219-24 Power Cord 1
35 M51077-01AA Side Cover 1
36 M11084-27 Screw, #10-16 x 1/2" 4
37 099125-03 Terminal Board 1
38 099157-01 Rivet 1
39 079010-20 Wire Assembly (Red, 18") 1
40 M16841-57 Wire Assembly (Red, 6") 1
41 M27417 Drain Plug (Includes “o” Ring) 1
42 099177-01 Hex Nut, 3/8 - 27 1
43 099213-01 Button Plug 1
44 097657-02 Thermostat 1
45 M10908-1 Screw, #6-32 x 1/4" 2
46 104905-01 Thermostat Knob 1
PARTS AVAILABLE - NOT SHOWN
103473-04 General Info. Decal (B110T) 1
098224-36 General Info. Decal (B150GT) 1
103473-01 General Info. Decal (B165T) 1
103473-03 General Info. Decal (R165T) 1
M9900-192 Combustion Chamber
Grounding Wire 1
099650-01 Wire Clip (Secures thermostat
and power cord wires) 1
OPTIONAL ACCESSORIES
HA3004 Rotor Kit (M22456-1, M22009,
M8643)
HA3017 Filter Kit (M11637, M12179,
M12244-1, M51150-01)
HA3020 Pump Kit (M27694, M10993-1,
M22997, M8940)

16
103301
PORTABLE FORCED AIR HEATER
70,000 110,000 150,000 AND 165,000 BTU/HR
110 150/165
KEY PART PART MODEL MODELS
NO. NUMBER DESCRIPTION QTY. QTY.
1 HA2203 Handle 2 (if equipped) —
HA2204 Handles — 2 (if equipped)
2 M12345-33 Screw, #10-24 x 1 3/4" 8 8
3 M12342-3 Wheel Support Frame 1 —
M12831-3 Wheel Support Frame — 1
4 NTC-3C Hex Nut, #10-24 8 8
5 097896-04 Wheel (Black Hub) 2 2
097896-01 Wheel (White Hub) 2 2
6 M28526 Cap Nut 2 2
7 M51015-01 Axle 1 —
M16801-2 Axle — 1
1
2
34
5
7
6
WHEELS AND HANDLE PARTS LIST
PARTS LIST

17
103301
OWNER’S MANUAL
Purchase accessories and parts from your
nearest dealer or service center. If they can
not supply these accessories or parts, either
contact your nearest Parts Central or DESA
International for referral information. Parts
CentralsarelistedintheAuthorizedService
Center booklet supplied with heater.
DESA International
P.O. Box 90004
Bowling Green, KY
42102-9004
1-800-972-7879
Parts Department
ACCESSORIES
A 008
AIR GAUGE KIT - HA1180
Specialtool tocheck pumppressure. Forall
models.
FLAME-OUT CONTROL/
PHOTOCELL TESTER -
HA1170
Special tool used to test the flame-out con-
trol and photocell.
HEAVY DUTY WHEELS AND
HANDLE KIT - HA1202
For heavy duty applications. Makes your
heater even more portable and convenient.
For 70,000 BTU/Hr model only.
STANDARD WHEELS AND
HANDLE KIT - HA1206
Makes heater even more portable and con-
venient.Easytoassemble.For70,000BTU/
Hr model only.

WARRANTY AND REPAIR SERVICE
WARRANTY SERVICE
Should your heater require service, return it to your nearest authorized service center. Proof of purchase must be presented with the heater. The
heaterwill be inspected.A defect maybe caused byfaulty materials orworkmanship. If so,DESAInternational will repairor replace theheater
without charge.
REPAIR SERVICE
Return the heater to your nearest authorized service center. Repairs not covered by the warranty will be billed at standard prices. Each Service
Center is independently owned and operated. We reserve the right to amend these specifications at any time without notice. A service manual
may be purchased from the address listed below. Send a check for $5.00 payable to DESA International.
When writing for information regarding your heater, be sure to include the model number and serial number as shown on the model plate.
Corporate Headquarters
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
For information, write: DESA International, P.O. Box 90004
Bowling Green, Kentucky 42102-9004 ATTN: Customer Service Department 103301-01
Rev. C
07/98
LIMITED WARRANTY
DESA International warrants this product and any parts thereof, to be free from defects in materials and workmanship for one (1) year
from the date of first purchase when operated and maintained in accordance with instructions. This warranty is extended only to the
original retail purchaser, when proof of purchase is provided.
This warranty covers only the cost of parts and labor required to restore the product to proper operating condition. Transportation and
incidental costs associated with warranty repairs are not reimbursable under this warranty.
Warranty service is available only through authorized dealers and service centers.
This warranty does not cover defects resulting from misuse, abuse, negligence, accidents, lack of proper maintenance, normal wear,
alteration,modification,tampering,contaminatedfuels,repairusingimproperparts,orrepairbyanyoneotherthananauthorizeddealer
or service center. Routine maintenance is the responsibility of the owner.
THIS EXPRESS WARRANTY IS GIVEN IN LIEU OF ANY OTHER WARRANTY EITHER EXPRESSED OR IMPLIED,
INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DESAInternational assumes no responsibility for indirect, incidental orconsequentialdamages.Somestatesdonotallowtheexclusion
orlimitation of incidental or consequentialdamagesorlimitationsorexclusionsmay not apply to you.ThisLimitedWarrantygivesyou
specific legal rights and you may also have other rights which vary from state to state.
Model No.
Serial No.
Date of Purchase
(To be filled in by purchaser)
KEEP THIS WARRANTY
INTERNATIONAL
NOT A UPC
103301 01