Desa H.S.I. User Manual [en, es]

KEROSENE/DIESEL PORTABLE FORCED AIR HEATERS

OWNER’S MANUAL

For more information, visit www.desatech.com

Heater Size: 55,000 and 60,000 Btu/Hr Model

H.S.I. Series

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.

TABLE OF CONTENTS

SAFETY INFORMATION ............................................................ 2

PRODUCT IDENTIFICATION ..................................................... 3

UNPACKING............................................................................... 3

THEORY OF OPERATION ......................................................... 3

FUELS......................................................................................... 3

VENTILATION............................................................................. 4

OPERATION ............................................................................... 4

OPERATION WITH PORTABLE GENERATOR.......................... 4

STORING, TRANSPORTING, OR SHIPPING............................ 5

PREVENTATIVE MAINTENANCE SCHEDULE ......................... 5

Fill In For Your Records Model No. ___________________

(Located on side panel)

TROUBLESHOOTING ................................................................ 6

SERVICE PROCEDURES .......................................................... 7

TECHNICAL SERVICE .............................................................. 11

REPLACEMENT PARTS ........................................................... 11

SPECIFICATIONS .................................................................... 12

WIRING DIAGRAMS................................................................. 12

ACCESSORIES ........................................................................ 13

ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 14

WARRANTY AND REPAIR SERVICE ........................ Back Cover

Serial No. ___________________

(Located on fuel tank)

Date of Purchase: ______________

Save this manual for future reference.

SAFETY INFORMATION

WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects, or other reproductive harm.

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, #1#2 diesel/fuel oil, JET A or JP-8 fuels 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 thor-

oughly familiar with the manufacturer's instructions and applicable 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, including the pilot light, if any, shall be extin-

guished 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 25 feet

(762cm) 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 hav-

ing jurisdiction.

• Use only the electrical voltage and frequency speciﬁed on model plate.

• Heater must be grounded. Use only a properly grounded threewire extension cord. Plug into grounded outlet only.

• Use only in areas free of ﬂammable vapors or high dust content.

• Minimum clearance from any combustible materials: 8 feet (244 cm) from hot air outlet; 4 feet (122 cm) from top; and 4 feet (122 cm) from sides and inlet.

• Locate heater on a stable and level surface while hot or operating or a ﬁre may occur.

• Use only in well-vented areas. Before using heater, provide at least a three-square-foot (2800 square cm) opening of fresh, outside air for each 100,000 Btu/Hr (30 kw) of rating.

• Keep children and animals away from heater at all times.

• Never start heater when combustion chamber is hot or if fuel has accumulated in combustion chamber.

• When used with thermostat, heater may start at anytime.

• When heater is moved or stored, it must be in a level position or fuel spillage may occur.

• Use heater only in accordance with local ordinances and codes.

• Never use gasoline, crankcase drainings, naphtha, paint thinners, alcohol, or other highly flammable fuels.

• Never use heater where gasoline, paint thinner, or other highly flammable vapors are present.

• Never use heater in living or sleeping areas.

• Never leave a heater plugged in without adult supervision if children or animals are likely to be present.

• Never move, handle, refuel, or service a hot, operating, or plugged-in heater.

• Never attach duct work to front or rear of heater.

• Never attach heater to external fuel tank.

• 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 (304.8cm). 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.

• Unplug heater when not in use.

• Never block air inlet (rear) or air outlet (front) of heater.

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112846-01A

PRODUCT IDENTIFICATION

UNPACKING

THEORY OF OPERATION

FUELS

PRODUCT IDENTIFICATION

Hot Air Outlet

Upper Shell

Lower Shell

Fuel Tank

Side Cover

Ignition Control Assembly (On Inside of Side Cover)

Figure 1 - 55/60 Models

Handle

Power Cord

Thermostat Knob (Thermostat Models Only)

Fan Guard

Air Filter End Cover

Fuel Cap

UNPACKING

1. Remove all packing items applied to heater for shipment.

2. Remove all items from carton.

3. Check items for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.

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 be lifted 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 ignition control assembly provides

power to the ignitor. This ignites the fuel/air mixture in the combustion chamber.

The Flame-Out Control System: This system causes the heater to

shut down if the ﬂame goes out.

Combustion Chamber

Clean Heated Air Out

Fuel Tank

Figure 2 - Cross Section Operational View

Nozzle

Air For Fuel System

Ignitor

Fuel Filter

Air For Combustion And Heating

Motor

Air Line To Burner

Fan

Air Pump

Air Intake Filter

Cool Air In

Air Output Filter

Ignition Control Assembly

Fuel

112846-01A

FUELS

WARNING: Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels to avoid risk of ﬁre or explosion. Never use gasoline, oil drained from crankcases, naphtha, paint thinners, alcohol or other highly ﬂammable fuels.

Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels. Heavier fuels such as No. 2 fuel oil or No. 2 diesel fuel may also be used but will result in:

• noticeable odor

• additional fuel ﬁlter maintenance

• the need for nontoxic, anti-icer additives in very cold weather Do not use fuels heavier than No. 2 grade or heavy oils such as oil

drained from crankcases. These heavy oils will not ignite properly and will contaminate the heater.

IMPORTANT:

(yellow ) storage container. Be sure storage container is clean. Foreign matter such as rust, dirt, or water will cause the ignition control assembly to shut down heater. Foreign matter may also require heater's fuel system to be frequently cleaned.

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Use a KEROSENE ONLY (blue) or DIESEL ONLY

VENTILATION

OPERATION OPERATION WITH PORTABLE GENERATOR

VENTILATION

WARNING: Provide a fresh air opening of at least three square feet (2,800 square cm) for each 100,000 Btu/hr rating. Provide extra fresh air if more heaters are being used. The minimum ventilation requirements must be followed to avoid risks associated with carbon monoxide poisoning. Make certain these requirements are met prior to operating heater.

Example:

following:

• a two-car garage door [16 feet (4.88 meter) opening] raised 1.5 inches (3.9 cm)

• a single-car garage door [9 feet (2.74 meter) opening] raised

2.5 inches (6.4 cm)

• two, 30 inch (76.2 cm) windows raised 4.5 inches (11.5 cm)

A 60,000 Btu/Hr (17.6kw) heater requires one of the

OPERATION

IMPORTANT: Review and understand the warnings in the needed to safely operate this heater. Follow all local ordinances and codes when using this heater.

Safety Information

section, page 2. They are

8. For thermostat models, adjust thermostat knob to the desired setting. This thermostat is a general-heating control. It is not intended for precise temperature control. Adjust thermostat until heater cycles at the desired setting.

Note:

A cold heater may affect the thermostat setting.

TO STOP HEATER

Unplug extension cord from outlet.

TO RESTART HEATER

1. Unplug extension cord from outlet and wait 10 seconds. (W ait two minutes if heater has been running.)

2. Repeat steps under To Start Heater.

OPERATION WITH PORTABLE GENERATOR

WARNING: Before operating heater or any appliance from a portable generator, verify that generator has been properly connected to earth ground. Improper grounding or failure to ground generator can result in electrocution if a ground fault occurs. Refer to owner’s manual supplied by generator manufacturer for proper grounding procedures.

TO START HEATER

1. Follow all ventilation and safety information.

2. Locate heater to provide maximum circulation of the heated air. Follow all location requirements noted in Safety Informa- tion, page 2.

3. Fill fuel tank with kerosene, #1#2 diesel/fuel oil, JET A or JP-8 fuel.

4. Attach fuel cap.

5. For thermostat models, turn thermostat knob clockwise to the high position.

6. Plug heater’s power cord into approved, grounded, three-wire extension cord. Extension cord must be at least six feet (1.8 meters) long.

Extension Cord Size Requirement

6 to 10 feet (1.8 to 3 meters) long, use 18 AWG (0.75 mm2) rated cord

11 to 100 feet (3.3 to 30.5 meters) long, use 16 AWG (1.0 mm2) rated cord

101 to 200 feet (30.8 to 61 meters) long, use 14 AWG (1.5 mm2) rated cord

7. Plug extension cord into standard 120 volt/60 hertz, 3-prong grounded outlet. then heater will start.

Note:

Ignitor will preheat for five seconds,

The operating voltage range of the heater is 108 to 132 Volts (120 Volts +/- 10%). Prior to plugging heater into generator the output voltage should be verified (if generator is equipped with the automatic idle feature, the output voltage should be measured with the generator running at full speed). If the voltage does not measure in this range the heater should not be plugged into the generator.

Refer to Operation for starting, stopping, and resetting heater procedures.

Alternator

Ground Wire (#10 AWG Stranded-Copper)

Figure 3 - Typical Generator Grounding Method (Generator construction may vary from that shown)

Ground Lug

Copper or Brass Grounding Point

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112846-01A

STORING, TRANSPORTING, OR SHIPPING

Note:

If shipping, transport companies require 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 during future use.

4. Replace fuel cap or drain plug. Properly dispose of old and dirty 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:

during next heating season. Using old fuel could damage heater.

Do not store kerosene over summer months for use

STORING, TRANSPORTING, OR SHIPPING

PREVENTATIVE MAINTENANCE SCHEDULE

WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock

can occur.

Item

Fuel tank

Air output and lint ﬁlters

Air intake ﬁlter

Fuel ﬁlter

Ignitor

Fan blades

Motor

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 as needed

Clean twice a heating season or as needed

No maintenance required

Clean every 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 7

See Fuel Filter, page 8

See Fan, page 7

112846-01A

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TROUBLESHOOTING

WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur.

FAULT CONDITION

Motor does not start five seconds after heater is plugged in

Motor starts and runs but heater does not ignite

POSSIBLE CAUSE

1. No power to heater

2. If equipped, thermostat setting is too low

WARNING: High voltage!

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

4. Binding pump rotor

5. Defective ignition control assembly

6. Defective motor

7. Blown fuse or ignitor control assembly

1. No fuel in tank

2. Pump pressure incorrect

3. Dirty fuel ﬁlter

4. Obstruction in nozzle

5. Water in fuel tank

WARNING: High voltage!

6. Bad electrical connection between ignitor and ignition control assembly

7. Defective ignitor

8. Defective ignition control assembly

REMEDY

1. Check circuit breaker in electrical panel

2. Turn thermostat knob to a higher setting

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

4. If fan does not turn freely, see Pump Ro- tor, pages 10 and 11

5. Replace ignition control assembly

6. Replace motor

7. See Ignition Control Assembly , page 11

1. Fill tank with kerosene

2. See Pump Pressure Adjustment, page 8

3. See Fuel Filter, page 8

4. See Nozzle Assembly, pages 9 and 10

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

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

7. Replace ignitor, see pages 8 and 9

8. Replace ignition control assembly

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

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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

1. See Pump Pressure Adjustment, page 8

2. See Air Output, Air Intake, and Lint Fil- ters, page 7

3. See Fuel Filter, page 8

4. See Nozzle Assembly, pages 9 and 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

112846-01A

SERVICE PROCEDURES

WARNING: To avoid risk of burn and electrical shock, never attempt to service heater while it is plugged in, operating, or hot.

Setscrew

SERVICE PROCEDURES

Fan

Motor

Setscrew

Fan

UPPER SHELL REMOVAL

1. Remove screws along each side of heater using 5/16" nut-driver. These screws attach upper and lower shells together. See Figure 4.

2. Lift upper shell off.

3. Remove fan guard.

Screw

Upper Shell

Fan Guard

Figure 4 - Upper Shell Removal

FAN

IMPORTANT:

motor from heater. The weight of the motor resting on the fan could damage the fan pitch (see Figure 5).

1. Remove upper shell (see Figure 4).

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 a 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 6).

7. Place setscrew on flat of shaft. Tighten setscrew firmly (40-50 inch-pounds/4.5-5.6 n-m).

8. Replace fan guard and upper shell.

Remove fan from motor shaft before removing

Flush

Motor Shaft

Figure 5 - Fan, Motor Shaft, and Setscrew Location

Figure 6 - Fan Cross Section

Motor Shaft

AIR OUTPUT, AIR INTAKE AND LINT FILTERS

1. Remove upper shell (see Figure 4).

2. Remove filter end cover screws using 5/16" nut-driver (see Figure 7).

3. Remove filter end cover.

4. Replace air output and lint filters.

5. W ash or replace air intake filter (see Pre ventative Maintenance Schedule, page 5).

6. Replace filter end cover.

7. Replace fan guard and upper shell.

IMPORTANT:

Lint Filter

Figure 7 - Air Output, Air Intake, and Lint Filters

Do not oil filters.

Air Intake Filter

Filter End Cover

Air Output Filter

112846-01A

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SERVICE PROCEDURES

Continued

PUMP PRESSURE ADJUSTMENT

1. Remove pressure gauge plug from filter end cover (see Figure 8).

2. Install accessory pressure gauge (part number HA1180).

3. Start heater (see Operation, page 4). 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 correct pressure for each model (see Figure 9).

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

Pressure Gauge Plug

Relief Valve

Fuel Filter and Bushing

Upper Fuel Line

Side Cover

Figure 10 - Fuel Filter Removal

Figure 8 - Pressure Gauge Plug Removal

Pump

Model Pressure

55 3.4 PSI 60 3.4 PSI

Figure 9 - Adjusting Pump Pressure

Pressure Gauge

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 (see Figure 10).

4. Carefully pry bushing and fuel filter out of fuel tank (see Figure 10).

5. Wash fuel filter with clean fuel and replace in tank.

6. Attach upper fuel line to fuel filter neck.

7. Replace side cover.

IGNITOR

1. Remove upper shell and fan guard (See Upper Shell Removal, page 7).

2. Remove fan (see page 7).

3. Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figure 10).

4. Disconnect ignitor wires from ignition control assembly (see Figure 11). 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 11).

Nozzle Adapter Combustion Chamber

Air Line Hose

Fuel Line Hose

Photocell Bracket

Photocell Assembly

Bracket

Ignitor

Ignitor Wire

Ignition Control Assembly

Side Cover

Figure 11 - Disconnecting Ignitor Wires from Ignition Control Assembly

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112846-01A

SERVICE PROCEDURES

Continued

SERVICE PROCEDURES

6. Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 12).

7. Remove ignitor screw with a 5/16" nut driver. Carefully remove ignitor from nozzle adapter bracket.

CAUTION: Do not bend or strike ignitor element.

Handle with care.

8. Carefully remove replacement ignitor from 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 5/16" nut driver (see Figure 12). Torque 8 to 15 in-lbs (.90 to 1.69 N-m) 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 Figure 11, page 8).

12. Replace side cover (see Figure 10, page 8).

13. Connect and route fuel line hose and air line hose to nozzle adapter assembly. See Fuel and Air Line Replacement and Proper Routing, page 10.

14. Replace photocell in photocell bracket. Route wires as shown in either (see Figure 13).

15. Replace fan (see page 7).

16. Replace fan guard and upper shell (see page 7).

NOZZLE ASSEMBLY

1. Remove upper shell (see Upper Shell Removal, page 7).

2. Remove fan (see Fan, page 7).

3. Remove fuel and air line hoses from nozzle assembly (see Figure 13).

4. Turn nozzle assembly 1/4 turn to left and pull toward motor to remove (see Figure 14).

5. Place plastic hex-body into vise and lightly tighten.

6. Carefully remove nozzle from the nozzle adapter using 5/8" socket wrench (see Figure 15, page 10).

7. Blow compressed air through face of nozzle. This will free any dirt in nozzle area.

8. Inspect nozzle sleeve for damage.

9. Replace nozzle into nozzle adapter until nozzle seats. Tighten 1/3 turn more using 5/8" socket wrench 40 to 45 in-lbs (4.5 to

5.1 N-m). See Figure 15, page 10.

10. Attach nozzle assembly to burner strap (see Figure 14).

Combustion Chamber

Nozzle Adapter Bracket

Photocell Bracket

Nozzle/Adapter Assembly

Fuel Line Hose

Ignitor Element

Photocell Bracket

Combustion Chamber

Figure 12 - Ignitor Replacement

112846-01A

Nozzle Adapter Bracket Opening

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Ignitor

Nozzle Adapter Bracket

Air Line Hose

Figure 13 - Removing Air and Fuel Line Hoses

Combustion Chamber

Figure 14 - Removing Nozzle/Adapter Assembly

Nozzle/Adapter Assembly

SERVICE PROCEDURES

Continued

11. Attach fuel and airline hoses to nozzle assembly. See Fuel and Airline Replacement and Proper Routing.

12. Replace fan (see Fan, page 7).

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

Nozzle Face

Nozzle

Nozzle Adapter

Figure 15 - Nozzle and Nozzle Adapter

Nozzle Sleeve

Air Line Fitting

Fuel Line Fitting

FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING

1. Remove upper shell (see Upper Shell Removal, page 7).

2. Remove side cover screws using 5/16" nut driver (see Figure 10, page 8).

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 (see Figure 12, page 9) and from fuel filter (see Fuel Filter, page 8). If air line hose is damaged, disconnect from nozzle adapter (see Figure 12, page 9) and from barb fitting on pump end cover (see Figure 16).

5. Install new air and/or fuel line. Attach one end of air line hose to barb fitting on pump end cover (see Figure 16) and the other end to nozzle adapter (see Figure 12, page 9). Attach one end of fuel line hose to fuel filter (see Fuel Filter, page 8) and the other end to nozzle adapter (see Figure 12, page 9).

Note:

Route hoses as shown in see Figure 12, page 9. Hoses

are not to touch photocell bracket.

6. Replace side cover.

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

Barb Fitting

Pump End Cover

PUMP ROTOR

(Procedure if Rotor is Binding)

1. Remove upper shell (see Upper Shell Removal, page 7).

2. Remove filter end cover screws using 5/16" nut driver (see Figure 17).

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 (see Figure 17).

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" (.076/.101 mm) if needed (see Figure 18).

Note:

Rotate rotor one full turn to ensure the gap is .003"/.004"

(.076/.101 mm) at tightest position. Adjust if needed.

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

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

12. Adjust pump pressure (see Pump Pressure Adjustment, page 8).

Note:

If rotor is still binding, proceed as follows.

Blade

Pump Plate

Air Intake Filter

Filter End Cover

Insert

Figure 17 - Rotor Location

Blade

Rotor

Air Output Filter

Gap Adjusting Screw

.003"/.004" (.076-.101 mm) Gap Measured With Feeler Gauge

Figure 16 - Air Hose to Barb Fitting

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Air Hose

Rotor

Gap Adjusting Screw

Figure 18 - Gap Adjusting Screw Locations

112846-01A

SERVICE PROCEDURES

TECHNICAL SERVICE

REPLACEMENT PARTS

SERVICE PROCEDURES

Continued

13. Perform steps 1 through 6.

14. Place ﬁne grade sandpaper (600 grit) on ﬂat surface. Sand rotor lightly in “ﬁgure 8” motion four times (see Figure 19).

15. Reinstall insert and rotor.

16. Perform steps 10 through 12.

Sandpaper

Figure 19 - Sanding Rotor

IGNITION CONTROL ASSEMBLY

WARNING: High voltage!

1. Unplug heater.

2. Remove side cover screws (4) using 5/16" nut-driver to expose ignition control assembly.

3. Remove fuse cover (see Figure 20).

4. Remove fuse from fuse clips (see Figure 20).

5. Replace with new fuse (DESA Heating Products part number 105880-02). Do not substitute a fuse with a higher current rating. Use Bussmann GMA-10 or equivalent.

6. Replace fuse cover (see Figure 20).

7. Replace side cover (see Figures 10, page 8).

Fuse Clips

Fuse Cover

Fuse

TECHNICAL SERVICE

You may have further questions about installation, operation, or troubleshooting. If so, contact DESA Heating Products’ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready.

You can also visit DESA Heating Products’ technical services web site at www.desatech.com.

REPLACEMENT PARTS

Note:

Use only original replacement parts. This will protect your

warranty coverage for parts replaced under warranty.

PARTS UNDER WARRANTY

Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products’ Technical Service Dept. at 1-866-672-6040.

When calling DESA Heating Products, have ready:

• your name

• your address

• model and serial numbers of your heater

• how heater was malfunctioning

• purchase date Usually, we will ask you to return the part to the factory.

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products at 1-866-672-6040 for referral information. Parts dealers are listed in the Authorized Service Center booklet supplied with heater.

When calling DESA Heating Products, have ready:

• model and serial numbers of your heater

• the replacement part number

Figure 20 - Replacing Fuse

112846-01A

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WIRING DIAGRAMS

SPECIFICATIONS

Output Rating (Btu/Hr) 55,000/60,000 Fuel Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels* Fuel Tank Capacity (U.S. Gal./Liters) 5/18.9 Fuel Consumption (Gal. Per Hr/Liters Per Hr) .44/1.67 Pump Pressure (psi) 3.4

Electric Requirements 120 V/60 HZ Amperage (Normal Run) 2.0 Motor RPM 1725 Hot Air Output (CFM) 180 Motor HP 1/15 Shipping Weight 33/15

(Approximate Pounds/Kilograms) Heater Weight without Fuel 29/13.1

(Approximate Pounds/Kilograms)

SPECIFICATIONS

* Use of #2 diesel & fuel oil will result in noticeable odor and could require additional fuel filter maintenance. Use in extreme cold temperatures may require nontoxic anti-icer additives.

WIRING DIAGRAMS

Blue Blue

Red

Black

White

Green

Photocell

White

Motor

Ignitor

Ignition Control Assembly

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Motor

Ignitor

Figure 21 - Wiring Diagram without Thermostat

Green

White

er P

120V/60H

Photocell Photocell

Ignitor

Motor Return

lug

AC Neutral (L2)

Ignition Control Assembly

120V (L1)

Motor

Ignitor

Figure 22 - Wiring Diagram with Thermostat

Blue Blue

White

Green

Red

Black

White

Photocell

White

Motor

Ignitor

Green

White

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