Desa 100 Manuel utilisateur

100 SIDE FRONT HANDLES PFA/PV 003

PORTABLE

FORCED

AIR HEATERS

OWNER’S MANUAL

150 SIDE FRONT HANDLE PFA/PV 007

Heater Sizes:

35,000 50,000 55,000 70,000 100,000 110,000 150,000 BTU/Hr

ARL LOGO G 004

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.

099176

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

CONTENTS SECTION PAGE

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.

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.

WARNINGS

SAFETY

INFORMATION

DANGER

Carbon monoxide poisoning may lead to death!

099176

SAFETY

INFORMATION

Continued

WARNINGS

(Continued)

• 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 mini-

mum safe distance is 10 feet. It is further recommended that these enclosure

materials be of a fire retardant nature. These enclosure materials shall be se-

curely 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. This heater

producescarbonmonoxide,whichislistedbytheStateofCaliforniaasareproductive

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.

099176

PRODUCT

IDENTIFICATION

35/50/70,000 BTU/HR DOMESTIC PFA/PV 042

Handle

Fuel Cap

Lower Shell

Power Cord

Side Cover

Fuel Tank

Hot Air Outlet

Air Filter

End Cover

Fan Guard

Upper Shell

Figure 1 - 35/50/55/70,000 BTU/Hr Models

100,000 BTU/HR DOMESTIC PFA/PV 043

Side Cover

Fuel Tank

Lower

Shell

Fuel Cap

Fan Guard

Power Cord

Flame-Out

Control Reset

Button

Upper Shell

Hot Air

Outlet

Figure 2 - 100/110/150,000 BTU/Hr Models

Flame-Out Control

Reset Button

099176

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:

When installing wheels, point extended hub of wheels toward

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.

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)

UNPACKING

ASSEMBLY PFA/PV 018

Front

Handle

Rear

Handle

Wheel

Support

Frame

Wheel

Extended

Hub

Hot Air

Outlet

Fuel

Tank

Flange

Screw

Nut

Cap Nut Axle

Air

Inlet

Figure 3 - Wheel and Handle Assembly, 100/110/150,000 BTU/Hr Models Only

099176

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.

WARNING

FUELS

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:

Use a KEROSENE ONLY storage container. Be sure storage

container 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.

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

Output

Filter

Fuel

Tank

Figure 4 - Cross Section Operational View

Burner

Head

Spark

Plug

Motor

Fan

Electronic

Ignitor

Air Line

To Burner

Nozzle

Air Pump

099176

WARNING

VENTILATION

Continued

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 150,000 BTU/Hr heater requires one of the following:

• a two-car garage door raised six inches

• a single-car garage door raised nine inches

• two, thirty-inch windows raised twelve inches

OPERATION WARNING

Review and understand the warnings in the Safety Informa-

tion 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).

Figure 5 - Flame-Out Control Reset

Button, 35/50/55/70,000 BTU/Hr

Models

Figure 6 - Flame-Out Control Reset

Button, 100/110/150,000 BTU/Hr

Models

Flame-

Out

Control

Reset

Button

Flame-

Out

Control

Reset

Button

099176

OPERATION

Continued

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

WARNING

PREVENTATIVE

MAINTENANCE

SCHEDULE Never service heater while it is plugged in, operating, or

hot. Severe burns and electrical shock can occur.

STORAGE 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:

Do not store kerosene over summer months for use during next

heating season. Using old fuel could damage heater.

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.

099176

Wrong pump pressure

Dirty air output, air intake

and lint ﬁlters

Dirty fuel ﬁlter

Dirt in nozzle

Dirty photocell lens

Bad flame-out control

Heater ignites, but

flame-out control

shuts off heater after

a short period of

time.

WARNING

TROUBLE-

SHOOTING Never service heater while it is plugged in, operating, or

hot. Severe burns and electrical shock can occur.

See Pump Pressure

Adjustment, page 11.

See Air Output, Air Intake

and Lint Filters, page 10.

See Fuel Filter, page 11.

See Nozzle, page 12.

Clean photocell lens.

Replace flame-out control.

Heater will not

ignite, but motor runs

for a short period of

time.

Wrong pump pressure

Carbon deposits on spark

plug and/or improper gap

Dirty fuel ﬁlter

Dirt in nozzle

Water in fuel tank

Electronic ignitor not

grounded

Bad electronic ignitor

WARNING: High voltage!

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

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.

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.

OBSERVED FAULT POSSIBLE CAUSE REMEDY

099176

SERVICE

PROCEDURES

Air Output

Filter

Lint Filter

Air Intake

Filter Filter End

Cover

Air Output

Filter

Lint Filter

Air Intake

Filter Filter End

Cover Fan

Guard

Figure 11 - Air Output, Air Intake,

and Lint Filters, 35/50/55/70,000

BTU/Hr Models

Figure 12 - Air Output, Air Intake,

and Lint Filters, 100/110/150,000

BTU/Hr Models

WARNING

Fan

Guard

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.

Never service heater while it is plugged in, operating, or

hot. Severe burns and electrical shock can occur.

Upper

Shell

Fan Guard

Upper

Shell Fan

Guard

Figure 7 - Upper Shell Removal,

35/50/55/70,000 BTU/Hr Models Figure 8 - Upper Shell Removal,

100/110/150,000 BTU/Hr Models

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 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 mois-

tened 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.

Fan

Setscrew

Motor

Shaft

Motor

Flush

Motor

Shaft

Back of Flat

Surface on

Motor Shaft

Setscrew

Motor

Figure 9 - Fan Cross Section

35/50/55/70/100/110,000 BTU/Hr Models Figure 10 - Fan Cross Section

150,000 BTU/Hr Model

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.

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