Desa RJ45, RJ70 User Manual

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Page 1

PORTABLE

FORCED

AIR HEATER

OWNER’S MANUAL

Heater Sizes:

RJ45 And RJ70

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.

Page 2

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

SAFETY INFORMATION

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.

• Use only kerosene or no. 1 fuel oil to avoid risk of ﬁre or explosion. Never use gasoline, naphtha, paint thinner, 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 governing regulations 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 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 structure.

f) All fuel storage shall be located a

minimum of 8 meters 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 penetrations 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 authority having 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 3 meters. 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 2800 square-centimeter opening of fresh, outside air for each 25,000 Kcal/Hr of rating.

• 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: 2.5 meters Sides: 1.25 meters Top: 1.25 meters Rear: 1.25 meters

• 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.

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.

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PRODUCT IDENTIFICATION

OWNER’S MANUAL

Hot Air Outlet

Lower Shell Fuel Gauge

Fuel Tank

ON/OFF Switch Side Cover

Receptacle Ignition Control Assembly

(assembly on inside of side cover)

Figure 1 - RJ45

Hot Air Outlet

Lower Shell

Handle

Upper Shell

Fan Guard

Air Filter End Cover

Fuel Cap

Power Cord

Handle

Upper Shell

Fuel Gauge

Fuel Tank

Receptacle Side Cover

ON/OFF Switch Flame-Out Control Reset Button

Figure 2 - RJ70

Fan Guard

Air Filter End Cover

Fuel Cap

Power Cord

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Page 4

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

THEORY OF OPERATION

The Fuel System: The air pump forces air through the air line. The air is then pushed through the 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.

Combustion Chamber

Ignitor or Spark Plug

Clean Heated Air Out

Fuel Tank

Figure 3 - Cross Section Operational View

Nozzle

Air For Fuel System

The Ignition System (RJ45): The igni- tion control assembly provides power to the ignitor. This ignites the fuel/air mixture in the combustion chamber.

The Ignition System (RJ70): 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.

Fuel Filter

Air For Combustion And Heating

Motor

Fan

Air Line To Burner

Air Pump

Air Intake Filter

Cool Air In

Ignition Control Assembly or Electronic Ignitor

Fuel

Air Output Filter

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 diesel. Using heavy fuels will result in:

• clogged fuel ﬁlter and nozzle

• the need of nontoxic 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 control to shut down the heater. Foreign matter may also require you to clean fuel system often.

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 2800 square-centimeter opening of fresh, outside air for each 25,000 Kcal/Hr rating. Provide extra fresh air if more heaters are being used.

Example:

The RJ45 (11,900 Kcal/Hr) heater requires a 1400 square-centimeter opening of fresh outside air.

The RJ70 (17,600 Kcal/Hr) heater requires a 2000 square-centimeter opening of fresh outside air.

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Page 5

OWNER’S MANUAL

OPERA TION

WARNING: Review and un-

derstand the warnings in the

Safety Information

2. 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 grounded extension cord. Extension cord must be at least 2 meters long.

Extension Cord Wire Size Requirements

• 2 to 3 meters long, use 1 mm2 cord

• 3 to 30 meters long, use 1.5 mm2 cord

• 30 to 60 meters long, use 2 mm2 cord

section, page

5. Plug extension cord into standard 100 volt/50 or 60 hertz grounded outlet.

6. Switch heater ON.

RJ45 Note:

five seconds, then heater will start.

RJ70 Note:

push in flame-out control reset button (see Figure 2, page 3).

Ignitor will preheat for

If heater will not start,

TO STOP HEATER

1. Switch heater OFF.

2. Unplug extension cord from outlet.

TO RESTART HEATER

1. Switch heater OFF. Wait 10 seconds (two minutes if heater has been running).

2. Switch heater ON.

RJ45 Note:

five seconds then heater will start.

RJ70 Note:

push in flame-out control reset button (see Figure 2, page 3).

Ignitor will preheat for

If heater will not start,

STORING, TRANSPORTING, OR SHIPPING

Note:

If shipping, transport companies re-

quire fuel tanks to be empty.

1. Drain fuel tank. Drain fuel through drain-plug under tank. Be sure all fuel is removed.

2. If any debris is noted in old fuel, add 1 or 2 liters of clean kerosene to tank, stir, and drain again. This will prevent excess debris from clogging filters during future use.

3. Replace fuel cap. Properly dispose of old and dirty fuel. Check with local automotive service stations that recycle oil.

4. If storing, store heater in dry place. Make sure storage place is free of dust and corrosive fumes.

IMPORTANT:

summer months for use during next heating season. Using old fuel could damage heater.

Do not store kerosene over

PREVENTATIVE MAINTENANCE SCHEDULE

Item

Fuel tank

Air output and lint ﬁlters

Air intake ﬁlter

Fuel ﬁlter

RJ45: Ignitor

RJ70: Spark Plug

Fan blades

Motor

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

hot. Severe burns and electrical shock can occur.

How Often

Flush every 150-200 hours of operation or as needed

Replace every 500 hours of operation or once a year

Wash and dry with soap and water every 500 hours of operation or replace as needed

Clean twice a heating season or replace as needed

No maintenance required

Clean and regap every 600 hours of operation or replace as needed

Clean each season or as needed

Not required/permanently lubricated

How To

See Storing, Transporting, or Shipping, above

See Air Output, Air Intake, and Lint Filters, page 8

See Fuel Filter, page 9

See Spark Plug, page 10

See Fan, page 8

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Page 6

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

TROUBLESHOOTING

RJ45

OBSERVED FAULT

Motor does not start five seconds after heater is plugged in and switched ON

Motor starts and runs but heater does not ignite

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

hot. Severe burns and electrical shock can occur.

POSSIBLE CAUSE

1. No power to heater

WARNING: High voltage!

2. Bad electrical connection between motor and ignition control assembly or ignition assembly and power cord

3. Binding pump rotor

4. Defective ignition control assembly

5. Defective motor

6. Defective ON/OFF switch

1. No fuel in tank

2. Pump pressure incorrect

3. Dirty fuel ﬁlter

4. Obstruction in nozzle

5. Water in fuel tank

REMEDY

1. Check circuit breaker in electrical panel

2. Check all electrical connections. See Wiring Diagrams, page 12

3. If fan does not turn freely, see Pump Ro- tor, page 11

4. Replace ignition control assembly

5. Replace motor

6. Replace ON/OFF switch

1. Fill tank with kerosene

2. See Pump Pressure Adjustment, page 8

3. See Fuel Filter, page 9

4. See Nozzle, page 10

5. Drain and ﬂush fuel tank with clean kerosene. See Storing, T ransporting, or Shipping, page 5

Heater ignites but ignition control assembly shuts heater off after a short period of time

WARNING: High voltage!

6. Bad electrical connection between ignitor and ignition control assembly

7. Defective ignitor

8. Defective ignition control assembly

1. Pump pressure incorrect

2. Dirty air intake, air output, and/or lint filter

3. Dirty fuel ﬁlter

4. Obstruction in nozzle

5. Photocell assembly not properly installed (not seeing the flame)

6. Dirty photocell lens

WARNING: High voltage!

7. Bad electrical connection between photocell and ignition control assembly

8. Defective photocell

9. Defective ignition control assembly

6. Check electrical connections. See Wir- ing Diagrams, page 12

7. Replace ignitor, see page 9

8. Replace ignition control assembly

1. See Pump Pressure Adjustment, page 8

2. See Air Output, Air Intake, and Lint F il- ters, page 8

3. See Fuel Filter, page 9

4. See Nozzle, page 10

5. Make sure photocell boot is properly seated in bracket

6. Clean photocell lens

7. Check electrical connections. See Wir- ing Diagrams, page 12

8. Replace photocell

9. Replace ignition control assembly

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Page 7

OWNER’S MANUAL

TROUBLESHOOTING

Continued

RJ70

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

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

hot. Severe burns and electrical shock can occur.

POSSIBLE CAUSE

1. Photocell assembly not properly installed (seeing flame)

2. Wrong pump pressure

3. Dirty air output, air intake and lint ﬁlters

4. Dirty fuel ﬁlter

5. Dirt in nozzle

6. Dirty photocell lens

7. Defective flame-out control

8. Defective photocell

1. No fuel in tank

2. Wrong pump pressure

3. Carbon deposits on spark plug and/or improper gap

4. Dirty fuel ﬁlter

5. Dirt in nozzle

6. Water in fuel tank

REMEDY

1. Make sure photocell boot is properly seated in bracket

2. See Pump Pressure Adjustment, page 8

3. See Air Output, Air Intake and Lint Fil- ters, page 8

4. See Fuel Filter, page 9

5. See Nozzle, page 11

6. Clean photocell lens

7. Replace flame-out control

8. Replace photocell

1. Fill tank with kerosene

2. See Pump Pressure Adjustment, page 8

3. See Spark Plug, page 10

4. See Fuel Filter, page 9

5. See Nozzle, page 11

6. Drain and ﬂush fuel tank with clean kerosene. See Storage, T ransporting, or Shipping,page 5

Motor does not start when heater is plugged in and switched ON, fan rotates slowly or does not turn

WARNING: High voltage!

7. Electronic ignitor not grounded

8. Defective electronic ignitor

1. Flame-out control not reset

2. Binding pump rotor

3. Defective motor

4. Defective ON/OFF switch

5. No power to heater

6. Bad electrical connections

7. Make sure electronic ignitor mounting is tight

8. Replace electronic ignitor

1. Press flame-out control reset button

2. If fan is hard to turn, see Pump Rotor, page 11

3. Replace motor

4. Replace ON/OFF switch

5. Check circuit breaker in electrical panel

6. Check all electrical connections. See Wiring Diagrams, page 12

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Page 8

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

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.

Upper Shell

Fan Guard

Figure 4 - Upper Shell Removal

FAN

IMPORTANT:

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 setscrew 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 (7200-8900 grams/centimeter).

8. Replace fan guard and upper shell.

Remove fan from motor

Fan

Motor

Flush

Motor Shaft

Setscrew

Figure 5 - Fan Cross Section

AIR OUTPUT, AIR INTAKE, AND LINT FILTERS

1. Remove upper shell (see Upper Shell Removal).

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 5).

6. Replace ﬁlter end cover.

7. Replace fan guard and upper shell.

IMPORTANT:

Lint Filter

Air Output Filter

Figure 6 - Air Output, Air Intake, and Lint Filters

Do not oil ﬁlters.

Air Intake Filter

Filter End Cover

Fan Guard

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 5). Allow motor to reach full speed.

4. Using a flat blade screwdriver, adjust pressure. Turn relief valve to right to increase the pressure. Turn relief valve to left to decrease the pressure. Set pump pressure as follows:

RJ45: 0.22 kg/cm2 at 50 Hz.

0.24 kg/cm2 at 60 Hz.

RJ70: 0.35 kg/cm2 at 50 Hz.

0.38 kg/cm2 at 60 Hz.

5. Remove pressure gauge. Replace pressure gauge plug in ﬁlter end cover.

Pressure Gauge Plug

Figure 7 - Pressure Gauge Plug Removal

Pressure Gauge

Figure 8 - Adjusting Pump Pressure

Relief Valve

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Page 9

OWNER’S MANUAL

SERVICE PROCEDURES

Continued

FUEL FILTER

1. Remove side cover screws using 5/16" nut-driver (see Figure 9).

2. Remove side cover.

3. Pull upper fuel line off fuel ﬁlter neck.

4. Carefully pry bushing and fuel ﬁlter out of fuel tank.

5. W ash fuel ﬁlter with clean fuel and replace in tank.

6. Attach upper fuel line to fuel ﬁlter neck.

7. Replace side cover (see Figure 9).

Fuel Filter

IGNITOR (RJ45)

1. Remove upper shell and fan guard (see Upper Shell Removal, page 8).

2. Remove fan (see Fan, page 8).

3. Remove side cover screws with a 5/16" nut driver. Remove side cover (see Figure 9).

4. Disconnect ignitor wires from ignition control assembly (see Figure 10). Pull the ignitor wires up through the hole in the lower shell.

5. Disconnect fuel line hose and air line hose. Remove photocell from photocell bracket (see Figure 10).

6. Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 11).

7. Remove ignitor screw with a 1/4" nut driver. Carefully remove ignitor from nozzle adapter bracket.

CAUTION: Do not bend or strike

ignitor element. Handle with care.

Combustion Chamber

Air Line Hose

Fuel Line Hose

Photocell Bracket

Photocell Assembly

Side Cover

Figure 10 - Disconnecting Ignitor Wires from Ignition Control Assembly

Nozzle Adapter Bracket

Ignitor Ignitor

Wires (Gray)

Ignition Control Assembly

Ignitor Screw

Ignitor

Side Cover

Figure 9 - Fuel Filter Removal

Upper Fuel Line

8. Carefully remove replacement ignitor from styrofoam packing.

9. Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter bracket with screw using a 1/4" nut driver (see Figure 11). Torque 1800 to 3500 grams/centimeters. Do not over torque.

10. Replace combustion chamber.

11. Route the ignitor wires back down through the hole in the lower shell. Connect wires to the ignition control assembly. See Wiring Diagrams, page 12, for correct terminal locations.

12. Replace side cover (see Figure 9).

13. Connect and route fuel line hose and air line hose to nozzle assembly. See

Fuel and Air Line Replacement and Proper Routing, page 10.

14. Replace photocell in photocell bracket. Route wires between hoses and back down through the hole in the lower shell with ignitor wires (see Figure 10).

15. Replace fan (see Fan, page 8).

16. Replace fan guard and upper shell (see Upper Shell Removal, page 8).

Ignitor

Photocell Bracket

Combustion Chamber

Figure 11 - Ignitor Replacement

Element

Nozzle Adapter Bracket Opening

Nozzle Adapter Bracket

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Continued

Page 10

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

SERVICE PROCEDURES

Continued

SPARK PLUG (RJ70)

1. Remove upper shell (see Upper Shell Removal, page 8).

2. Remove fan (see Fan, page 8).

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 electrodes to 2.2 mm.

6. Install spark plug in burner head.

7. Attach spark plug wire to spark plug.

8. Replace fan (see Fan, page 8).

9. Replace fan guard and upper shell (see Upper Shell Removal, page 8).

Burner Head

Figure 12 - Spark Plug Removal

Bend Here to Adjust Gap

Figure 13 - Spark Plug Gap

Spark Plug Wire

Spark Plug

Gap

2.2 mm

9. Screw nozzle into nozzle adapter until nozzle seats. Tighten 7200-8000 grams/ centimeter using 5/8" socket wrench.

10. Install nozzle adapter into nozzle adapter bracket.

11. Connect and route fuel line hose and air line hose to nozzle assembly. See

Fuel and Air Line Replacement and Proper Routing, page 10.

12. Replace fan (see Fan, page 8).

13. Replace fan guard and upper shell (see Upper Shell Removal, page 8).

Combustion Chamber

Fuel Line Hose

Air Line Hose

Figure 14 - Removing Air and Fuel Line Hoses

Combustion Chamber

Nozzle Adaptor Bracket

Nozzle Adapter

Ignitor and Photocell wires through this hole

Nozzle Adapter

FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING

1. Remove upper shell (see Upper Shell Removal, page 8).

2. Remove side cover screws using 5/16" nut driver (see Figure 9, page 9).

3. Remove side cover.

4. Inspect fuel and air line hoses for cracks and/or holes. If fuel line hose is damaged, disconnect from nozzle adapter or burner head (see Figure 14 or Figure 18, page 11) and from fuel filter (see Fuel Filter, page 9). If air line hose is damaged, disconnect from nozzle adapter or burner head (see Figure 14 or Figure 18, page 11) and from barb fitting on pump end cover (see Figure 17).

5. Install new air and/or fuel line. Attach one end of air line hose to barb fitting on pump end cover (see Figure 17) and the other end to nozzle adapter or burner head (see Figure 14 or Figure 18, page 11). Attach one end of fuel line hose to fuel filter (see Fuel Filter, page

9) and the other end to nozzle adapter (see Figure 14 or Figure 18, page 11). Route air and fuel line approximately as shown in Figure 14 (RJ45) or 18 (RJ70), page 11.

Note:

Hoses are not to touch photocell

bracket.

6. Replace side cover.

7. Replace upper shell and fan guard (see Upper Shell Removal, page 8).

NOZZLE (RJ45)

1. Remove upper shell (see Upper Shell Removal, page 8).

2. Remove fan (see Fan, page 8).

3. Remove fuel and air line hoses from nozzle adapter.

4. Turn nozzle adapter 1/4 turn to left and pull toward motor to remove.

5. Place nozzle adapter into vise and lightly tighten.

6. Carefully unscrew 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.

Figure 15 - Removing Nozzle Assembly

Nozzle Face

Nozzle Seal

Nozzle

Nozzle Adapter

Air Line Fitting

Fuel Line Fitting

Figure 16 - Nozzle and Nozzle Adapter

Pump End Cover

Barb Fitting

Air Hose

Figure 17 - Air Hose to Barb Fitting

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Page 11

OWNER’S MANUAL

SERVICE PROCEDURES

Continued

NOZZLE (RJ70)

1. Remove upper shell (see Upper Shell Removal, page 8).

2. Remove fan (see Fan, page 8).

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 screws using 5/16" nutdriver 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 19).

Combustion Chamber

Screw

Air Line Hose

Figure 18 - Removing Burner Head

Nozzle Face

Nozzle Seal

Nozzle

Burner Head

Spark Plug

Fuel Line Hose

Spark Plug Wire

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 (14,300-19,600 grams/ centimeter).

12. Attach burner head to combustion chamber.

13. Install spark plug in burner head.

14. Attach spark plug wire to spark plug.

15. Connect and route fuel line hose and air line hose to burner head. See Fuel

and Air Line Replacement and Proper Routing, page 10.

16. Replace fan (see Fan, page 8).

17. Replace fan guard and upper shell (see Upper Shell Removal, page 8).

PUMP ROTOR

(Procedure if Rotor is Binding)

1. Remove upper shell (see Upper Shell Removal, page 8).

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

0.08/0.10 mm if needed (see Figure 21).

Note:

Rotate rotor one full turn to insure the gap is 0.08/0.10 mm at tightest position. Adjust if needed.

Blade

Pump Plate

Air Intake Filter

Filter End Cover

10. Install blades, pump plate, air ﬁlters, and ﬁlter end cover.

11. Replace fan guard and upper shell.

12. Adjust pump pressure (see Pump Pres- sure Adjustment, page 8).

Note:

If rotor is still binding, proceed

as follows.

13. Perform steps 1 through 6, column 1.

14. Place ﬁne grade sandpaper (600 grit) on ﬂat surface. Sand rotor lightly in “ﬁgure 8” motion four times (see Figure 22).

15. Reinstall insert and rotor.

16. Perform steps 10 through 12.

Gap Adjusting Screw Blade

Figure 21 - Gap Adjusting Screw Locations

Sandpaper

Figure 22 - Sanding Rotor

0.08/0.10 mm Gap Measured With Feeler Gauge

Rotor

Gap Adjusting Screw

Burner Head

Air Line Fitting

Figure 19 - Removing Nozzle

104950

Fuel Line Fitting

Insert

TOR

Figure 20 - Rotor Location

Rotor

Air Output Filter

PFA/P 056

Fan Guard

Page 12

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

WIRING DIAGRAMS

Ignitor

Orange

Power Plug

100V/50 or 60 Hz

Green

Figure 22- Wiring Diagram For RJ45

Black Black

ON/OFF

White

Switch

Motor

Receptacle

Photocell

Power Plug

100V/50 or 60 Hz

Orange

Red

Green

Black

White

Blue

IGNITOR MOTOR MAIN

Ignition Control

Assembly

120V (L1) AC NEUTRAL (L2)

MOTOR RETURN IGNITOR

PHOTOCELL PHOTOCELL

104040

White

Green

Motor

Red

Black

Figure 23- Wiring Diagram For RJ70

Relay

Ignitor

Spark Plug Red

Red

Green/

Yellow

Green

White

Terminal

Board

Black

Power On Switch

White

Red

Black

White

Photo-

cell

Plug

Receptacle

Blue

Black

Flame-

Out

Control

Reset

Button

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Page 13

SPECIFICATIONS

RJ45 RJ70

Maximum Output Rating (Kcal/Hr) 11,900 17,600 Fuel Use Only Kerosene or No. 1 Fuel Oil Fuel Tank Capacity (liters) 15.1 18.9 Fuel Consumption (liters/Hr) 1.3 1.9 Electric Requirements 100V/50 or 60 Hz Amperage (Normal Run) 3.7 3.0 Motor Speed (RPM at 50/60 Hz) 2850/3450 2850/3450 Motor Watts 93 93 Pump Pressure (kg/cm2 at 50/60 Hz) 0.22/0.24 0.35/0.38

ACCESSORIES

Purchase accessories and parts from your nearest dealer.

OWNER’S MANUAL

AIR GAUGE KIT - HA1180

Special tool to check pump pressure.

A 008

IGNITION CONTROL ASSEMBLY/PHOTOCELL TESTER - HA1170

Special tool used to test the ignition control assembly and photocell.

HEAVY DUTY WHEELS AND HANDLE KIT - HA1202

For heavy duty applications. Makes your heater even more portable and convenient.

104950

Page 14

RJ45 And RJ70

PORTABLE FORCED AIR HEATERS

ILLUSTRATED PARTS BREAKDOWN

RJ45

9-1

9-5

9-2

9-4

9-3

12-1

12-2

12-3

12-18

12-17

12-16

12-5

Motor and Pump Assembly

12-4

12-15

12-6

12-14

32 38

12-7

12-12

12-8

12-9

30 29

12-13

12-11

12-10

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Page 15

OWNER’S MANUAL

PARTS LIST

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.

RJ45

KEY PART NO. NUMBER DESCRIPTION QTY.

1 M51104-01 Handle 1 2 098511-36 Upper Shell 1 3 M11084-29 Screw, #10-16 x 3/4" 2 4 100647-01 Screw, #10-16 x 1/2" 6 5 098512-62 Combustion Chamber 1 6 M10908-2 Screw, #6-32 x 3/8" 2 7 103154-03 Photocell Bracket 1 8 M16656-23 Photocell Assembly 1 9 ∆ Burner Head Assembly 1 9-1 100735-22 Nozzle Assembly 1 9-2 102548-04 Ignitor Kit 1 9-3 104056-01 Nozzle Adapter 1 9-4 102336-01 Nozzle Adapter Bracket 1 9-5 104023-01 Screw/Washer Assembly 1 10 M11084-26 Screw, #10-16 x 3/8" 2 11 097033-01 Fan 1 12 ∆ Motor and Pump Assembly 1 12-1 102001-22 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" Diameter 1 12-14 M29612-01 ⊕ Output Filter 1 12-15 M12461-31 Screw, #10-32 x 1" 6 12-16 103676-01 Nylon Elbow, 90° 1 12-17 M8643** Blade 4

KEY PART NO. NUMBER DESCRIPTION QTY.

12-18 FHPF3-5C Screw 2 13 M51105-01 Fan Guard 1 14 102330-01 Power Cord 1 15 099492-01 Strain Relief Bushing 1 16 NTC-4C Hex Lock Nut, 1/4-20 2 17 M11084-26 Screw, #10-16 x 3/8" 4 18 M50631 Rubber Bumper 2 19 097461-06AA Side Cover 1 20 101205-01 Motor Bracket 1 21 M30865-02 Bushing 1 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 098511-18 Lower Shell 1 27 M50814-06 Rubber Airline 1 28 079973-01 Fuel Line 1 29 M50876-02 Fuel Filter with bushing 1 30 M10990-3 Rubber Bushing 1 31 101695-01 Button Plug 1 32 102349-01 PCB Support 5 33 104068-02 Ignition Control Assembly 1 34 097702-01 Fuel Cap (Includes Gasket) 1 35 098513-100 Fuel Tank 1 36 M51108-01 Shell Heat-Shield 1 37 097190-05 Fuel Gauge 1 38 098226-01 On/Off Switch 1 39 097196-02 Switch Seal 1 40 097202-01 Receptacle 1 41 097274-01 Jumper Plug 1 42 097467-02 Button Plug 1

PARTS AVAILABLE - NOT SHOWN

104949-01 General Information Decal 1 103814-01 Wire Tie 1

∆ Not available as an assembly ** Included in Rotor Kit (Part No. HA3004)

⊕ Included in Filter Kit (Part No. HA3014) ∞ Included in Pump Adjustment Kit (Part No. HA3020)

104950

Page 16

RJ45 And RJ70

RJ70

PORTABLE FORCED AIR HEATERS

ILLUSTRATED PARTS BREAKDOWN

RJ70

10-1

10-2

10-4

10-3

10-5

10-6

Burner Head Assembly

18-18

18-1

18-2

18-3

18-17

18-16

18-15

Motor and Pump Assembly

18-4

18-14

18-5

18-6

10-7

18-7

18-13

18-8

18-9

18-10

18-11

18-12

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Page 17

OWNER’S MANUAL

PARTS LIST

RJ70

KEY PART PART NO. NUMBER DESCRIPTION QTY.

1 097190-01 Fuel Gauge 1 2 098511-36 Upper Shell 1 3 100647-01 Screw, #10-16 x 1/2" 6 4 098512-41 Combustion Chamber 1 5 097202-01 Receptacle 1 6 M16660 Photocell Bracket 1 7 M10908-2 Screw, #6-32 x 3/8" 2 8 HA3019 Photocell Assembly 1 9 102330-01 Power Cord 1 10

10-1 100735-14 Nozzle 1 10-2 M10659-1 Nozzle Seal Washer 2 10-3 M10809-1 Nozzle Seal Spring 1 10-4 M8882 Nozzle Seal Sleeve 1 10-5 M51098-02 Burner Head Body 1 10-6 M50820-01 Barb Fitting 2

10-7 HA3012 Spark Plug 1 11 M11084-27 Screw, #10-16 x 1/2" 3 12 M30865-02 Bushing 2 13 099492-01 Strain Relief Bushing 1 14 097200-01 Fan 1 15 M50631 Rubber Bumper 2 16 M15823-39 Screw, #8-18 x 1/2" 2 17 101205-01 Motor and Relay Bracket 1 18

18-1 102001-12 Motor 1

18-2 079975-02 Pump Body 1

18-3 M22009** Insert 1

18-4 M22456-1** Rotor 1

18-5 M29608 End Pump Cover 1

18-6 M29632

18-7 M29633⊕ Intake Filter 1

18-8 M29609 End Filter Cover 1

18-9 M12461-31 Screw, #10-32 x 1" 3

18-10 M8940

18-11 M10993-1∞ Pressure Relief Spring 1

18-12 M27694

18-13 M22997∞ Plug 1

18-14 M29612-01

18-15 M12461-31 Screw, #10-32 x 1" 6

18-16 M50016 Elbow, 90˚ (Barb Fitting) 1

∆ Burner Head Assembly 1

∆ Motor and Pump Assembly 1

⊕ Lint Filter 1

∞ Steel Ball (1/4" Dia.) 1

∞ Adjusting Screw 1

⊕ Output Filter 1

KEY PART PART NO. NUMBER DESCRIPTION QTY.

18-17 M8643** Blade 4

18-18 FHPF3-5C Screw, #10-32 x 5/8" 2 19 M50050 Rubber Cap 1 20 NTC-4C Hex locknut 2 21 M50104-02 Bushing (wires) 1 22 M11084-26 Screw, #10-16 x 3/8" 6 23 098511-18 Lower Shell 1 24 M11271-8 Clip Nut 6 25 097061-01 Relay (motor start) 1 26 079010-18 Wire Assembly (red 16") 1 27 M10908-14 Screw, #8-32 x 3/8" 1 28 M29652-04 Rubber Airline 1 29 079973-01 Fuel Line 1 30 M16841-57 Wire Assembly (red 8 31 M10990-3 Rubber Bushing 1 32 M50876-05 Fuel Filter Assembly 1

(Includes bushing) 33 102482-01 Electronic Ignitor 1 34 M11084-29 Screw, #10-16 x 3/4" 2 35 099125-03 Terminal Board 1 36 099157-01 Rivet 1 37 097702-01 Fuel Tank Cap 1 38 097997-02 Flame-Out Control 1 39 098513-57 Fuel Tank 1 40 097194-02AA Side Cover 1 41 M11084-26 Screw, #10-16 x 3/8" 4 42 099177-01 Hex Nut 1 43 097274-01 Jumper Plug 1 44 M9900-162 Wire Assembly (green 16") 1 45 M27417 Drain Plug 1 46 098226-01 ON/OFF Switch 1 47 097196-02 Switch Seal 1

PARTS AVAILABLE - NOT SHOWN

HA2210 Filler Neck Screen 1 102415-01 Wiring Decal 1 097204-22 Tradename Decal 1 097208-33 Nameplate Decal 1 M9900-170 Wire Assembly (Black 12") 2

/2") 1

∆ Not available as an assembly ** Included in Rotor Kit (Part No. HA3004)

⊕ Included in Filter Kit (Part No. HA3014) ∞ Included in Pump Adjustment Kit (Part No. HA3020)

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Page 18

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 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, 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.

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.

Each Service Center is independently owned and operated. We reserve the right to amend these speciﬁcations at any time without notice.

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.

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.

Corporate Headquarters

2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004

KEEP THIS WARRANTY

Model No. Serial No. Date of Purchase

(To be ﬁlled in by purchaser)

104950 01

NOT A UPC

104950-01 Rev B 09/99