Page 1
PORTABLE
FORCED
AIR HEATERS
OWNER’S MANUAL
100 SIDE FRONT HANDLES PFA/PV 003
150 SIDE FRONT HANDLE
Heater Sizes:
35,000 50,000 55,000 70,000 100,000 1 10,000 150,000 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.
PFA/PV 007
ARL LOGO
®
G 004
Page 2
CONTENTS
SECTION PAGE
Safety Information.........................................................................2
Product Identification ....................................................................4
Unpacking .....................................................................................5
Assembly .......................................................................................5
Theory of Operation ......................................................................6
Fuels ..............................................................................................6
Ventilation .....................................................................................7
Operation .......................................................................................7
Storage........................................................................................... 8
Preventative Maintenance Schedule .............................................8
Troubleshooting.............................................................................9
Service Procedures ........................................................................ 10
Upper Shell Removal.............................................................. 10
Fan...........................................................................................10
Air Output, Air Intake, and Lint Filters.................................. 10
Pump Pressure Adjustment..................................................... 11
Fuel Filter................................................................................ 11
Spark Plug (35/50/55,000 BTU/Hr Models) .......................... 11
Spark Plug (70/100/110/150,000 BTU/Hr Models) ...............12
Nozzle (35/50/55,000 BTU/Hr Models)................................. 12
Nozzle (70/100/110/150,000 BTU/Hr Models) .....................13
Pump Rotor .............................................................................13
Specifications.................................................................................14
Wiring Diagrams ...........................................................................14
Maintenance Kits...........................................................................15
Accessories ....................................................................................15
Warranty and Repair Service ........................................................ Back Cover
SAFETY
INFORMATION
2
WARNINGS
IMPORTANT: Read this Owner’s Manual carefully and completely
before trying to assemble, operate, or service this heater. Improper
use of this heater can cause serious injury or death from burns, fire,
explosion, electrical shock, and carbon monoxide poisoning.
DANGER
Carbon monoxide poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning
resemble the flu, with headaches, dizziness, 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 pregnant women, persons with heart or lung disease or anemia,
those under the influence 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.
099176
Page 3
SAFETY
INFORMATION
Continued
WARNINGS
• Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never use
gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels.
• Fueling
a) Personnel involved with fueling shall be qualified and thoroughly familiar with
the manufacturer's instructions and applicable federal, state, and local regula-
tions regarding the safe fueling of heating units.
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, shall be extinguished and the heater
allowed to cool, prior to fueling.
d) During fueling, all fuel lines and fuel-line connections shall be inspected for leaks.
Any leaks shall be repaired prior to returning the heater to service.
e) At no time shall more than one day's supply of heater fuel be stored inside a
building in the vicinity of the heater. Bulk fuel storage shall be outside the struc-
ture.
f) All fuel storage shall be located a minimum of 25 feet from heaters, torches,
welding equipment, and similar sources of ignition (exception: the fuel reservoir
integral with the heater unit).
g) Whenever possible, fuel storage shall be confined to areas where floor penetra-
tions 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 authority hav-
ing jurisdiction.
• Never use heater where gasoline, paint thinner, or other highly flammable vapors are
present.
• Follow all local ordinances and codes when using heater.
• Heaters used in the vicinity of tarpaulins, canvas, or similar enclosure materials
shall be located a safe distance from such materials. The recommended minimum safe distance is 10 feet. It is further recommended that these enclosure
materials be of a fire retardant nature. These enclosure materials shall be 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-squarefoot opening of fresh, outside air for each 100,000 BTU/Hr of rating. This heater
produces carbon monoxide, which is listed by the State of California as a reproductive
toxin under Proposition 65.
• Use only in places free of flammable vapors or high dust content.
• Use only the electrical voltage and frequency specified on model plate.
• Use only a three-prong, grounded extension cord.
• Minimum heater clearances from combustibles:
Outlet: 8 Ft. Sides: 4 Ft. Top: 4 Ft. Rear: 4 Ft.
• Locate heater on a stable and level surface if heater is hot or running or a fire may
occur.
• When moving or storing heater, keep heater in a level position or fuel spillage may
occur.
• Keep children and animals away from heater.
• Unplug heater when not in use.
• When used with thermostat, heater may start 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.
(Continued)
099176
3
Page 4
PRODUCT
IDENTIFICATION
Hot Air Outlet
Handle
Upper Shell
Lower Shell
Fuel Tank
Side Cover
Hot Air
Outlet
Lower
Shell
Flame-Out Control
Reset Button
Power Cord
35/50/70,000 BTU/HR DOMESTIC
Figure 1 - 35/50/55/70,000 BTU/Hr Models
Fan Guard
Air Filter
End Cover
Fuel Cap
PFA/PV 042
Upper Shell
Fuel Cap
Side Cover
100,000 BTU/HR DOMESTIC
Figure 2 - 100/110/150,000 BTU/Hr Models
Flame-Out
Control Reset
PFA/PV 043
Button
Fan Guard
Fuel Tank
Power Cord
4
099176
Page 5
UNPACKING
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.
ASSEMBLY
(For 100,000, 110,000, and
150,000 BTU/Hr Models Only)
These models are furnished with wheels and a front handle. Some models are
furnished with a rear handle also. Wheels, handle(s), and the mounting hardware
are found in the shipping carton.
Tools Needed
• Medium Phillips Screwdriver
• 3/8" Open or Adjustable Wrench
• Hammer
1. Slide axle through wheel support frame. Install wheels on axle.
IMPORTANT:
wheel support frame (see Figure 3).
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 support
frame.
4. Place front handle (and rear handle if provided) on top of fuel tank flange.
Insert screws 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.
When installing wheels, point extended hub of wheels toward
Front
Handle
Hot Air
Outlet
Fuel
Tank
Flange
Wheel
Support
Frame
Wheel
Cap Nut
Figure 3 - Wheel and Handle Assembly, 100/110/150,000 BTU/Hr Models Only
ASSEMBLY
Screw
Nut
Axle
Rear
Handle
Air
Inlet
Extended
Hub
PFA/PV 018
099176
5
Page 6
THEORY OF
!
OPERATION
The Fuel System: The air pump forces air through the air line. The air is then
pushed through the burner head nozzle. This air causes fuel to lift from the tank.
A fine mist of fuel is sprayed into the combustion chamber.
The Air System: The motor turns the fan. 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.
Clean
Heated
Air Out
Fuel
Tank
Combustion
Chamber
Nozzle
Air For Fuel
System
Figure 4 - Cross Section Operational View
THEORY CUTAWAY
Spark
Plug
Fuel
Filter
Motor
Burner
Head
Air Line
To Burner
Air For Combustion
And Heating
PFA/OV 003
Fan
Air Pump
Air
Intake
Filter
Cool
Air
In
Air
Output
Filter
Electronic
Ignitor
Fuel
FUELS
WARNING
Use only kerosene or No. 1 fuel oil to avoid risk of fire or
explosion. Never use gasoline, naphtha, paint thinners,
alcohol, or other highly flammable fuels.
Do not use heavy fuels such as No. 2 fuel oil 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:
container is clean. Foreign matter such as rust, dirt, or water will cause the flameout control to shut down heater. Foreign matter may also require you to clean fuel
system often.
6
Use a KEROSENE ONLY storage container. Be sure storage
099176
Page 7
VENTILATION
WARNING
!
Follow the minimum fresh, outside air ventilation
requirements. If proper fresh, outside air ventilation is not
provided, carbon monoxide poisoning can occur. Provide
proper fresh, outside air ventilation before running heater.
Provide at least a three-square-foot opening of fresh, outside air for each 100,000
BTU/Hr rating. Provide extra fresh air if more heaters are being used.
Example:
• a two-car garage door raised six inches
• a single-car garage door raised nine inches
• two, thirty-inch windows raised twelve inches
A 150,000 BTU/Hr heater requires one of the following:
OPERATION
WARNING
!
Review and understand the warnings in the Safety Information Section, pages 2 and 3. They are needed to safely
operate this heater. Follow all local codes when using this
heater.
To Start Heater
1. Follow all ventilation and safety information.
2. Fill fuel tank with kerosene or No. 1 fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into three-prong, grounded extension cord. Exten-
sion cord must be at least six feet long.
Extension Cord Wire Size Requirements
6 to 10 feet long, use 18 AWG rated cord
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/60 hertz, three-hole, grounded
outlet. Heater will start when extension cord is plugged into outlet. If not,
push in flame-out control reset button (see Figures 5 and 6).
099176
FlameOut
Control
Reset
Button
Figure 5 - Flame-Out Control Reset
Button, 35/50/55/70,000 BTU/Hr
Models
FlameOut
Control
Reset
Button
Figure 6 - Flame-Out Control Reset
Button, 100/110/150,000 BTU/Hr
Models
Continued
7
Page 8
OPERATION
Continued
To Stop Heater
1. Unplug extension cord from outlet.
To Restart Heater
1. Wait two minutes after stopping heater.
2. Repeat steps under To Start Heater, page 7.
STORAGE
PREVENTATIVE
MAINTENANCE
SCHEDULE
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 used.
3. Add one gallon of clean kerosene to fuel tank.
4. Attach fuel cap.
5. Move heater forwards and backwards to stir fuel.
6. Remove fuel cap or drain plug and drain fuel tank. Be sure all fuel is removed.
7. Replace fuel cap or drain plug. Properly dispose of old and dirty fuel.
8. Store heater in dry place. Make sure storage place is free of dust and corrosive
fumes.
IMPORTANT:
heating season. Using old fuel could damage heater.
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
Do not store kerosene over summer months for use during next
WARNING
!
Item How Often How To
Fuel tank Flush every 150-200 hours See Storage above.
of operation or as needed.
Air output and Replace every 500 hours of See Air Output, Air Intake,
lint filters operation or once a year. and Lint Filters, page 10.
Air intake Wash and dry with soap and See Air Output, Air Intake,
filter water every 500 hours of op- and Lint Filters, page 10.
eration or replace as needed.
Fuel filter Clean twice a heating season See Fuel Filter, page 11.
or replace as needed.
Spark plug Clean and regap every 600 See Spark Plug, pages 11
hours operation or replace and 12.
as needed.
Fan blades Clean each season or as needed. See Fan, page 10.
Motor Not required/permanently lubricated
8
099176
Page 9
TROUBLE-
SHOOTING
WARNING
!
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
OBSERVED FAULT POSSIBLE CAUSE REMEDY
Heater ignites, but
flame-out control
shuts off heater after
a short period of
time.
Wrong pump pressure
Dirty air output, air intake
and lint filters
Dirty fuel filter
See Pump Pressure
Adjustment, page 11.
See Air Output, Air Intake
and Lint Filters, page 10.
See Fuel Filter, page 11.
Heater will not
ignite, but motor runs
for a short period of
time.
!
Dirt in nozzle
Dirty photocell lens
Bad flame-out control
Wrong pump pressure
Carbon deposits on spark
plug and/or improper gap
Dirty fuel filter
Dirt in nozzle
Water in fuel tank
WARNING: High voltage!
Electronic ignitor not
grounded
Bad electronic ignitor
See Nozzle, page 12.
Clean photocell lens.
Replace flame-out control.
See Pump Pressure
Adjustment, page 11.
See Spark Plug, pages 11
and 12.
See Fuel Filter, page 11.
See Nozzle, page 12.
Drain and flush fuel
tank with clean kerosene.
See Storage, page 8.
Make sure electronic ig nitor mounting is tight.
Replace electronic ignitor.
099176
Motor does not start
when heater is plugged
in, fan rotates slowly
or does not turn.
Flame-out control not reset
Solid state relay not
allowed to reset
Binding pump rotor
Press flame-out control
reset button.
Wait two minutes
before trying to restart
heater.
If fan is hard to turn, see
Pump Rotor, page 13.
9
Page 10
SERVICE
PROCEDURES
WARNING
!
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
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.
Fan
IMPORTANT:
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 above).
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. (35/50/55/70/100,000 BTU/Hr
Models) Replace fan on motor
shaft. Place fan hub flush with end
of motor shaft (see Figure 9).
(150,000 BTU/Hr Model) Replace
fan on motor shaft. Make sure set
screw is touching back of flat
surface on motor shaft (see Figure
10).
7. Place setscrew on flat of shaft.
Tighten setscrew firmly (40-50
inch-pounds).
8. Replace fan guard and upper shell.
Remove fan from
Air Output, Air Intake, and
Lint Filters
1. Remove upper shell (see above).
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 8).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT:
Do not oil filters.
10
Upper
Shell
Figure 7 - Upper Shell Removal,
35/50/55/70,000 BTU/Hr Models
Fan
Motor
Motor
Shaft
Setscrew
Figure 9 - Fan Cross Section
35/50/55/70/100/110,000 BTU/Hr Models
Air Intake
Filter
Filter End
Cover
Lint Filter
Air Output
Filter
Figure 11 - Air Output, Air Intake,
and Lint Filters, 35/50/55/70,000
BTU/Hr Models
Fan
Guard
Flush
Fan
Guard
Lint Filter
Upper
Shell
Figure 8 - Upper Shell Removal,
100/110/150,000 BTU/Hr Models
Fan
Back of Flat
Surface on
Motor Shaft
Setscrew
Motor
Figure 10 - Fan Cross Section
150,000 BTU/Hr Model
Air Intake
Filter
Filter End
Cover
Air Output
Filter
Figure 12 - Air Output, Air Intake,
and Lint Filters, 100/110/150,000
BTU/Hr Models
Fan Guard
Fan
Guard
Motor
Shaft
099176
Page 11
Pump Pressure
Adjustment
1. Remove pressure gauge plug from
filter end cover.
2. Install accessory pressure gauge
(part number HA1180).
3. Start heater (see Operation, page
7). 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. See specifications at right
for correct pressure for each model.
5. Remove pressure gauge. Replace
pressure gauge plug in filter end
cover.
(35/50/55/70,000 BTU/Hr Models Shown)
Pressure
Gauge
Plug
Figure 13 - Pressure Gauge Plug Removal
Pump
Model Pressure
35,000 BTU/Hr 3.0 PSI
50,000 BTU/Hr 3.6 PSI
55,000 BTU/Hr 3.4 PSI
70,000 BTU/Hr 4.0 PSI
100,000 BTU/Hr 4.0 PSI
110,000 BTU/Hr 4.5 PSI
150,000 BTU/Hr 5.0 PSI
Relief
Valve
Pressure
Gauge
Figure 14 - Adjusting Pump Pressure
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 (100/110/
150,000 BTU/Hr models only) out
of fuel tank.
5. Wash fuel filter with clean fuel and
replace in tank.
6. Attach upper fuel line to fuel filter
neck.
7. Replace side cover.
Spark Plug
(35/50/55,000 BTU/Hr Models)
1. Remove upper shell (see page 10).
2. Remove fan (see page 10).
3. Remove fuel and air line hoses
from nozzle assembly.
4. Remove spark plug wire from
spark plug.
5. Remove two (2) screws using 5/
16" nut-driver and remove burner
strap.
6. Place hex-body of spark plug into
vise and tighten.
7. Remove spark plug mounting nut
using 11/16" open-end wrench.
8. Remove burner strap from spark
plug.
9. Clean and regap spark plug
electrodes to .055" gap.
10.Replace burner strap onto spark
plug. Rotate burner strap to
position spark plug electrodes (see
Figure 19, page 12).
099176
Continued
Fuel Filter
Upper Fuel Line
Side Cover
Figure 15 - Fuel Filter Removal,
35/50/55/70,000 BTU/Hr Models
Combustion
Chamber
Figure 17 - Spark Plug Removal, 35/50/55,000 BTU/Hr Models
Figure 18 - Spark Plug Gap, 35/50/55,000 BTU/Hr Models
Side Cover
Spark Plug
Mounting Nut
Air Line
Hose
Fuel Filter, Bushing,
and Lower Fuel Line
100 FUEL FILTER REMOVAL
Figure 16 - Fuel Filter Removal,
100/110/150,000 BTU/Hr Models
Burner
Strap
.055" Gap
Spark
Plug
Nozzle Assembly
Fuel Line Hose
Bend Here
to Adjust
Gap
Upper
Fuel
Line
PFA/P 041
Spark Plug
Wire
11
Page 12
11.Tighten spark plug with spark plug
mounting nut.
12.Release hex-body of spark plug from
vise.
13.Replace burner strap onto combustion
chamber.
14.Attach spark plug wire to spark plug.
15.Attach fuel and air line hoses to
nozzle assembly.
16.Replace fan (see page 10).
17.Replace fan guard and upper shell.
Spark Plug
(70/100/110/150,000 BTU/Hr Models)
1. Remove upper shell (see page 10).
2. Remove fan (see page 10).
3. Remove spark plug wire from spark
plug.
4. Remove spark plug from burner head
using 13/16" open-end wrench.
5. Clean and regap spark plug elec-
trodes as follows:
70/100,000 BTU/Hr
Models = .055" gap
110/150,000 BTU/Hr
Model = .075" gap
6. Install spark plug in burner head.
7. Attach spark plug wire to spark plug.
8. Replace fan (see page 10).
9. Replace fan guard and upper shell.
Burner
45°
Strap
Figure 19 - Spark Plug Rotation, 35/50/55,000 BTU/Hr Models Only
Burner
Head
Spark
Plug
Figure 20 - Spark Plug Removal, 70/100/110/150,000 BTU/Hr Models
Figure 21 - Spark Plug Gap, 70/100/110/150,000 BTU/Hr Models
Spark Plug
Wire
Bend Here
to Adjust
Gap
Gap
Nozzle
(35/50/55,000 BTU/Hr Models)
1. Remove upper shell (see page 10).
2. Remove fan (see page 10).
3. Remove fuel and air line hoses from
nozzle assembly.
4. Turn nozzle assembly 1/4 turn to left
and pull toward motor to remove.
5. Place plastic hex-body into vise and
lightly tighten.
6. Carefully remove nozzle from the
nozzle adapter using 5/8" socket
wrench.
7. Blow compressed air through face of
nozzle. This will free any dirt in
nozzle area.
8. Inspect nozzle seal for damage.
9. Replace nozzle into nozzle adapter
until nozzle seats. Tighten 1/3 turn
more using 5/8" socket wrench (4045 inch-pounds).
10.Attach nozzle assembly to burner
strap.
11.Attach fuel and airline hoses to
nozzle assembly.
12.Replace fan (see page 10).
13.Replace fan guard and upper shell.
12
Combustion
Chamber
Nozzle
Assembly
Air Line Hose
Figure 22 - Removing Air and Fuel Line
Hoses, 35/50/55,000 BTU/Hr Models
Nozzle
Face
Nozzle
Figure 24 - Nozzle and Nozzle Adapter, 35/50/55,000 BTU/Hr Models
Fuel Line Hose
Nozzle
Adapter
Air Line
Fitting
Nozzle
Assembly
Burner
Strap
Figure 23 - Removing Nozzle Assembly,
35/50/55,000 BTU/Hr Models
Nozzle
Seal
Fuel Line
Fitting
099176
Page 13
Nozzle
(70/100/110/150,000 BTU/Hr Models)
1. Remove upper shell (see page 10).
2. Remove fan (see page 10).
3. Remove fuel and air line hoses from
burner head.
4. Remove spark plug wire from spark
plug.
5. Remove spark plug from burner
head using 13/16" open-end wrench.
6. Remove three (3) 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 head using 5/8" socket
wrench (see Figure 26).
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 10).
17.Replace fan guard and upper shell.
Combustion
Chamber
Screw
Air Line Hose
Figure 25 - Removing Burner Head, 70/100/110/150,000 BTU/Hr Models
Nozzle
Face
Nozzle
Burner
Head
Figure 26 - Removing Nozzle, 70/100/110/150,000 BTU/Hr Models
Nozzle
Seal
Burner Head
Air Line
Fitting
Blade
Pump
Plate
Spark
Plug
Fuel Line Hose
Fuel Line
Fitting
Air Intake
Filter
Spark Plug
Wire
Filter End
Cover
Pump Rotor
(Procedure if rotor is binding)
1. Remove upper shell (see page 10).
2. Remove filter end cover screws
using 5/16" nut-driver.
3. Remove filter end cover and air
filters.
4. Remove pump plate screws 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
29).
Note:
Rotate rotor one full turn to
insure the gap is .003"/.004" at tightest
position. Adjust if needed.
Continued
099176
Insert
50 ROTOR
Figure 27 - Rotor Location, 35/50/55/70,000 BTU/Hr Models
Insert
100 ROTOR-Domestic PFA/P 059A
Figure 28 - Rotor Location, 100/110/150,000 BTU/Hr Models
Rotor
Rotor
PFA/P 056
Blade
Air Output
Filter
Air Output
Filter
Pump
Plate
Air Intake
Filter
Filter End
Cover
Fan Guard
Fan Guard
13
Page 14
(Pump Rotor, continued)
10.Install blades, pump plate, air filters,
and filter end cover.
11.Replace fan guard and upper shell.
12.Adjust pump pressure (see page 11).
Note:
If rotor is still binding, proceed as
follows.
13. Perform steps 1 through 6 (see page
13).
14.Place fine grade sandpaper (600 grit)
on flat surface. Sand rotor lightly in
“figure 8” motion four times (see Figure 30).
15.Reinstall insert and rotor.
16.Perform steps 10 through 12 above.
Gap Adjusting Screw
.003"/.004" Gap
Measured With
Feeler Gauge
Blade
Rotor
Gap Adjusting Screw
Figure 29 - Gap Adjusting Screw Locations
Sandpaper
Figure 30 - Sanding Rotor
SPECIFICATIONS
WIRING
DIAGRAMS
Output Rating
(BTU/Hr.)
35,000 50,000 55,000 70,000 100,000 110,000 150,000
Fuel Use Only Kerosene or No. 1 Fuel Oil
Fuel Tank Capacity
(U.S. Gal.) 3.0 4.0 5.0 5.0 9.0 9.0 13.5
Fuel Consumption
(Gal. Per Hr.) .26 .37 .40 .52 .74 .82 1.10
Electric Requirements 120 V/60 Hz (Same All Models)
Amperage
(Normal Run)
2.0 2.0 2.0 2.5 4.5 4.5 4.5
Hot Air Output (CFM) 165 165 175 250 480 490 500
Power Plug
120V 60HZ
Red
Black
Green
White
Blue
Photocell
Blue
B
Flame
Out
Control
R
Reset
Button
Motor
Green
Ignitor
White
White
Spark Plug
Red
Red
White
Terminal
Board
White
14
Figure 31 - Wiring Diagram, 35/50/55,000 BTU/Hr Models
Power Plug
120V 60HZ
Red
Green
Black
White
Blue
Photocell
Blue
Motor
Black
Green
Ignitor
Relay
White
White
Spark Plug
Red
Red
Red
White
Terminal
Board
White
Figure 32 - Wiring Diagram, 70/100/110/150,000 BTU/Hr Models
B
Flame
Out
Control
R
Reset
Button
099176
Page 15
MAINTENANCE
KITS
BTU/Hr 35,000 50,000 55,000 70,000 100,000 110,000 150,000
Flame-Out Control
Part No. HA3003 HA3003 HA3003 HA3003 HA3003 HA3003 HA3003
Spark Plug Part No. HA3013 HA3013 HA3013 HA3012 HA3012 HA3012 HA3012
Filter Kit Part No. HA3014 HA3014 HA3014 HA3014 HA3017 HA3017 HA3017
Nozzle Kit Part No. HA3006 HA3007 HA3021 HA3008 HA3009 HA3022 HA3010
Rotor/Air Pump Kit
Part No. HA3004 HA3004 HA3005 HA3004 HA3004 HA3004 HA3004
Handle Part No. — — — — HA2203 HA2203 HA2204
Photocell Part No. HA3019 HA3019 HA3019 HA3019 HA3019 HA3019 HA3019
Pump Adjustment
Part No. HA3020 HA3020 HA3020 HA3020 HA3020 HA3020 HA3020
ACCESSORIES
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.
Parts Centrals are listed in the
Authorized Service Center
booklet supplied with heater.
DESA International
P.O. Box 90004
Bowling Green, KY
42102-9004
1-800-972-7879
Parts Department
AIR GAUGE KIT - HA1180
For all models. Special tool
to check pump pressure.
STANDARD WHEELS AND
HANDLE KIT - HA1206
Makes heater even more
portable and convenient.
Easy to assemble. Fits
35/50/55/70,000 BTU/
Hr models.
THERMOSTAT
KIT - HA1210
For all models. Keeps
your building at the
temperature you select
day and night. Helps
economize on fuel.
099176
HEAVY DUTY
WHEELS AND
HANDLE KIT - HA1202
For heavy duty applications. Makes your heater
even more portable and
convenient. Fits 35/50/55/70,000 BTU/Hr
models.
FLAME-OUT CONTROL/PHOTOCELL
TESTER - HA1170
For all models. Special tool used to test
the flame-out control and photocell.
A 008
15
Page 16
WARRANTY AND REPAIR SERVICE
LIMITED WARRANTY
DESA International warrants this product and any
parts thereof, to be free from defects in materials and
workmanship for six (6) months 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, contaminated fuels, repair using improper
parts, or repair by anyone other than an authorized
dealer 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.
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 heater will be inspected.
A defect may be caused by faulty materials or workmanship. If so, DESA International will repair or replace the
heater 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.
Illustrated parts lists can be obtained free of charge. Send
a self addressed stamped envelope to the address listed
below. List the heater model number and the date located
in the lower right corner of this page. 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.
Each Service Center is independently owned and operated.
We reserve the right to amend these specifications at any
time without notice.
KEEP THIS WARRANTY
Model No.
DESA International assumes no responsibility for indirect, incidental or consequential damages. Some
states do not allow the exclusion or limitation of
incidental or consequential damages or limitations or
exclusions may not apply to you. This Limited Warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
DESA
INTERNATIONAL
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
When writing, always include model number and serial number.
Serial No.
Date of Purchase
(To be filled in by purchaser)
099176-01
Rev. J
02/95
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