Desa B70D, R70D User Manual

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Page 1

PORTABLE

FORCED

AIR HEATER

OWNER’S MANUAL

Heater Size: 70,000 Btu/Hr

Models: R70D and B70D

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.

ARL LOGO

G 004

Page 2

70,000 Btu/Hr H.S.I. Series

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. Ne ver use gasoline, naphtha, paint thinners, alcohol, or other highly ﬂammable fuels.

• Fueling a) Personnel involv ed with fueling shall

be qualified and thoroughly familiar with the manufacturer’s instructions and applicable federal, state, and local 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 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. An y 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 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 federal, state, or local authority having jurisdiction.

• Never use heater where gasoline, paint thinner, or other highly ﬂammable v apors 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 threesquare-foot 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.

• Approved by the New York City Fire Department under certificate of approval #4803, #4860, #4908, or #4909. To be used only at construction sites in accordance with applicable New York City Codes, Regulations, Rules, Directives, Permits, etc.

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OWNER’S MANUAL

PRODUCT IDENTIFICATION

Hot Air Outlet

Lower Shell

Fuel Tank

Side Cover

Ignition Control Assembly (assembly on inside of side cover)

Power Cord

Figure 1 - 70,000 Btu/Hr

Handle

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

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.

Motor

Fan

Upper Shell

Fan Guard

Air Filter End Cover

Air Pump

Air Intake Filter

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.

Fuel Cap

Clean Heated Air Out

Fuel Tank

Figure 2 - Cross Section Operational View

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Nozzle

Air For Fuel System

Fuel Filter

Air Line To Burner

Air For Combustion And Heating

Cool Air In

Air Output Filter

Ignition Control Assembly

Fuel

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70,000 Btu/Hr H.S.I. Series

PORTABLE FORCED AIR HEATERS

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 a clogged fuel ﬁlter and/or nozzle.

IMPORTANT:

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 the heater. Foreign matter may also require you to clean fuel system often.

Use a KEROSENE ONLY

VENTILATION

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:

one of the following:

• a two-car garage door (16 feet wide opening) raised two inches

• a single-car garage door (9 feet wide opening) raised three inches

• two windows (30 inches wide opening) raised six inches

A 70,000 Btu/Hr heater requires

OPERATION

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 infor mation.

2. Fill fuel tank with kerosene or No. 1 fuel oil.

3. Attach fuel cap.

4. Plug power cord of heater into threeprong, grounded extension cord. Extension 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.

Note: Ignitor will preheat for five seconds then heater will start.

section, page

TO STOP HEATER

Unplug extension cord from outlet.

TO RESET HEATER

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

2. Plug extension cord into standard 120 volt/ 60 hertz, three-hole, grounded outlet.

Note:

Ignitor will preheat for five sec-

onds then heater will start.

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OWNER’S MANUAL

STORING, TRANSPORTING, OR SHIPPING

Note:

If shipping, transport companies re-

quire fuel tanks to be empty.

1. Drain fuel tank. Drain fuel through fuel cap opening. Be sure all fuel is removed.

2. 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.

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

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 replace as needed.

Clean twice a heating season or replace as needed.

No maintenance required.

Clean each season or as needed.

Not required/permanently lubricated

How To

See Storing, Transporting, or Shipping

See Air Output, Air Intake, and Lint Filters, page 7

See Fuel Filter, page 8

See Fan, page 7

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Page 6

70,000 Btu/Hr H.S.I. Series

PORTABLE FORCED AIR HEATERS

TROUBLESHOOTING

Note:

For additional help, visit DESA

International’s technical service web site at www.desatech.com.

FAULT CONDITION

Motor does not start five seconds after heater is plugged in

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 control assembly and power cord

3. Blown fuse on ignition control assembly

4. Binding pump rotor

5. Defective ignition control assembly

6. Defective motor

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 Diag ram, page 11

3. See Ignition Control Assembly, page 8

4. If fan does not turn freely, see Pump Rotor, page 10

5. Replace ignition control assembly

6. Replace motor

1. Fill tank with kerosene

2. See Pump Pressure Adjustment, page 7

3. See Fuel Filter, page 8

4. See Nozzle Assembly, page 9

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)

WARNING: High voltage!

6. Dirty photocell lens

7. Bad electrical connection between photocell and ignition control assembly

8. Defective photocell

9. Defective ignition control assembly

www.desatech.com

6. Check electrical connections. See Wiring Diagram, page 11

7. Replace ignitor, see page 8

8. Replace ignition control assembly

1. See Pump Pressure Adjustment, page 7

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

3. See Fuel Filter, page 8

4. See Nozzle Assembly, page 9

5. Make sure photocell boot is properly seated in bracket

6. Clean photocell lens

7. Check electrical connections. See Wir- ing Diagram, page 11

8. Replace photocell

9. Replace ignition control assembly

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Page 7

OWNER’S MANUAL

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 3 - Upper Shell Removal

FAN

IMPORTANT:

before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch.

Remove fan from motor shaft

Fan

Motor

Flush

Motor Shaft

Setscrew

Figure 4 - 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:

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 4). Allow motor to reach full speed.

4. Using a flat blade screwdriver, adjust pressure. Turn relief valve to right to increase the pressure. T urn relief valve to left to decrease the pressure. Set pump pressure at 4.7 PSI.

5. Stop heater (see Operation, page 4).

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

Pressure Gauge Plug

Figure 6 - Pressure Gauge Plug Removal

Pressure Gauge

Relief Valve

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

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 4).

7. Place setscrew on ﬂat of shaft. T ighten setscrew ﬁrmly (40-50 inch-pounds).

8. Replace fan guard and upper shell.

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Lint Filter

Air Output Filter

Figure 5 - Air Output, Air Intake, and Lint Filters

Figure 7 - Adjusting Pump Pressure

Continued

Page 8

70,000 Btu/Hr H.S.I. Series

PORTABLE FORCED AIR HEATERS

SERVICE PROCEDURES

Continued

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

FUEL FILTER

1. Remove 4 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 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.

Fuel Filter

Side Cover Upper Fuel Line

Figure 8 - Fuel Filter Removal

IGNITOR

1. Remove upper shell and fan guard (see 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 8).

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

9). 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 9).

6. Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 10).

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.

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 10). T orque 8 to 15 in. lbs. 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.

12. Replace side cover (see Figure 8).

13. Connect and route fuel line hose and air line hose to nozzle adapter (see Figure 9).

14. Replace photocell in photocell bracket. Route wires as shown in Figure 12, page 9.

15. Replace fan (see page 7).

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

Combustion Chamber

Air Line Hose

Fuel Line Hose

Photocell Bracket

Photocell Assembly

Side Cover

Figure 9 - Disconnecting Ignitor Wires from Ignition Control Assembly

Nozzle Adapter Bracket

Ignitor

Ignitor Wires

Ignition Control Assembly

Ignitor Screw/ Washer Assembly

Ignitor

Photocell Bracket

Combustion Chamber

Figure 10 - Ignitor Replacement

Element

Nozzle Adapter Bracket

Nozzle Adapter Bracket Opening

IGNITION CONTROL ASSEMBLY

(Procedure for Replacing Fuse)

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.

4. Remove fuse from fuse clips.

5. Replace fuse with fuse of the same type and rating (GMA-10). Do not substitute a fuse with a higher current rating.

6. Replace fuse cover.

7. Replace side cover.

Fuse Clips

Figure 11 - Replacing Fuse

Fuse Cover

Fuse

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Page 9

OWNER’S MANUAL

SERVICE PROCEDURES

Continued

NOZZLE ASSEMBLY

1. Remove upper shell (see page 7).

2. Remove fan (see page 7).

3. Remove fuel and air line hoses from nozzle assembly (see Figure 12).

4. Turn nozzle assembly 1/4 turn to left and pull toward motor to remove (see Figure 13).

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 14).

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 (40-45 inchpounds).

10. Attach nozzle assembly to burner strap.

11. Attach and route fuel and airline hoses to nozzle assembly as shown (see Figure 12). Route photo cell wires as shown in Figure 12.

12. Replace fan (see page 7).

13. Replace fan guard and upper shell.

Combustion Chamber

Nozzle/ Adapter Assembly

Figure 13 - Removing Nozzle/Adapter Assembly

Nozzle Face

Nozzle Seal

Nozzle

Nozzle Adapter

Air Line Fitting

Figure 14 - Nozzle and Nozzle Adapter

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 scr ews using 5/16" nut driver (see Figure 8, 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) and from fuel filter (see Fuel F il- ter, page 8). If air line hose is damaged, disconnect from nozzle adapter (see Figure 12) and from barb fitting on pump end cover (see Figure 15).

5. Install new air and/or fuel line. Attach one end of air line hose to barb fitting on pump end cover (see Figure 15) and the other end to nozzle adapter (see Figure 12). Attach one end of fuel line hose to fuel filter (see Fuel Filter, pa ge

8) and the other end to nozzle adapter (see Figure 12). Route air and fuel line approximately as shown in Figure 12.

Note:

Route hoses as shown in Figure

12. Hoses are not to touch photocell bracket.

6. Replace side cover.

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

Pump End Cover

Combustion Chamber

Burner Strap

Nozzle/ Adapter Assembly

Fuel Line

Air Line Hose

Figure 12 - Removing Air and Fuel Line Hoses

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Hose Photocell

Wires

Barb Fitting

Air Hose

Figure 15 - Air Hose to Barb FItting

Continued

Page 10

70,000 Btu/Hr H.S.I. Series

PORTABLE FORCED AIR HEATERS

SERVICE PROCEDURES

Continued

PUMP ROTOR

(Procedure if Rotor is Binding)

1. Remove upper shell (see page 7).

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 17).

Note:

Rotate rotor one full turn to insure the gap is .003"/.004" at tightest position. Adjust if needed.

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

11. Replace fan guard and upper shell.

12. Adjust pump pressure (see page 7).

Note:

If rotor is still binding, proceed

as follows.

13. Perform steps 1 through 6 above.

14. Place ﬁne grade sandpaper (600 grit) on ﬂat surface. Sand rotor lightly in “ﬁgure 8” motion four times (see Figure 18).

15. Reinstall insert and rotor.

16. Perform steps 10 through 12 above.

Blade

Pump Plate

Air Intake Filter

Filter End Cover

Insert

Rotor

Air Output

Figure 16 - Rotor Location

Gap Adjusting Screw

Blade

Gap Adjusting Screw

Figure 17 - Gap Adjusting Screw Locations

Filter

PFA/P 056

Fan Guard

.003"/.004" Gap Measured With Feeler Gauge

Rotor

Sandpaper

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 International’s Technical Service Dept. at 1-800-323-5190.

When calling DESA International, have ready:

• your name

• your address

• model number of your heater

• how heater was malfunctioning

• purchase date Usually, we will ask you to return the defec-

tive 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 International’s Parts Department at 1-800-972-7879 for referral information. Parts Centrals are listed in the Authorized Service Center booklet supplied with heater.

When calling DESA International, have ready:

• model number of your heater

• the replacement part number

TECHNICAL

Figure 18 - Sanding Rotor

SERVICE

You may have further questions about operation or troubleshooting. If so, contact DESA International’s Technical Service Dept. at 1-800-323-5190.

You can also visit DESA International’s technical services web site at www.desatech.com.

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OWNER’S MANUAL

SPECIFICATIONS

Output Rating (Btu/Hr) 70,000 Fuel Use Only Kerosene or No. 1 Fuel Oil Fuel Tank Capacity (U.S. Gal.) 5.0 Fuel Consumption (Gal. Per Hr.) .52 Electric Requirements 120 V/60 Hz Amperage (Normal Run) 2.8 Hot Air Output (CFM) 360 Motor RPM 3440 Motor HP 1/8 Shipping Weight

(Approximate Pounds) 36

Heater Weight without Fuel

(Approximate Pounds) 31

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 for referral information. 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

WIRING DIAGRAM

Ignitor

Yellow

Power Plug

120V/60Hz

Green

Figure 19 - Wiring Diagram

Black

White

Photocell

A 008

IGNITION CONTROL ASSEMBLY/PHOTOCELL TESTER - HA1170

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

Yellow Red

Motor

Ignitor Motor

Green

Ignition Control

Assembly

AC Hot (L1) AC Neutral (L2)

White

Blue Blue

STANDARD WHEELS AND HANDLE KIT - HA1206

Makes heater even more portable and convenient. Easy to assemble.

Motor Return Ignitor

Photocell Photocell

AIR GAUGE KIT - HA1180

Special tool to check pump pressure.

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HEAVY DUTY WHEELS AND HANDLE KIT - HA1202

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

THERMOSTAT KIT - HA1210

Keeps your building at the temperature you select day and night. Helps economize on fuel.

Page 12

70,000 Btu/Hr H.S.I. Series

9-2

9-1

9-3

9-4

9-5

PORTABLE FORCED AIR HEATERS

ILLUSTRATED PARTS BREAKDOWN

R70D B70D

12-18

Motor and Pump Assembly

12-1

12-2

12-17

12-16

12-4

12-5

12-6

12-13

12-3

12-15

12-14

12-12

12-7

12-8

12-9

12-10

12-11

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OWNER’S MANUAL

PARTS LIST

R70D

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.

B70D

KEY PART NO. NUMBER DESCRIPTION QTY.

1 M51104-01 Handle 1 2 098511-36 Upper Shell (R70D) 1

098511-54 Upper Shell (B70D) 1 3 M11084-29 Screw, #10-16 x 3/4" 2 4 100647-01 Screw, #10-16 x 1/2" 6 5 098512-51 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 100735-18 Nozzle Assembly 1 9-2 102548-03 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 M29678 Fan 1 12 ∆ Motor and Pump Assembly 1 12-1 102001-20 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

KEY PART NO. NUMBER DESCRIPTION QTY.

12-17 M8643** Blade 4 12-18 FHPF3-5C Screw, #10-32 x 5/8" 2 13 M51105-01 Fan Guard 1 14 098219-31 Power Cord 1 15 M11143-1 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 097461-03AA Side Cover 1 20 101205-01 Motor Bracket 1 21 M30865-02 Bushing 2 22 M11271-8 Clip Nut 6 23 M50104-02 Bushing 1 24 M11084-26 Screw, #10-16 x 3/8" 6 25 M10908-14 Screw, #8-32 x 3/8" 1 26 098511-18 Lower Shell (R70D) 1

098511-12 Lower Shell (B70D) 1 27 M50814-06 Rubber Airline 1 28 079973-01 Fuel Line 1 29 M50876-05 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 098513-62 Fuel Tank 1 36 M51108-01 Shell Heat-Shield 1

PARTS AVAILABLE - NOT SHOWN

097204-03 Tradename Decal (R70D) 2

097646-02 Tradename Decal (B70D) 2

098493-01 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)

103685

Page 14

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.

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.

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. Each Service Center is independently owned and operated. Repairs not covered by the warranty will be billed at standard prices. When writing for information regarding your heater, be sure to include the model number and serial number as shown on the model plate. We reserve the right to amend these speciﬁcations at any time without notice.

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.

KEEP THIS WARRANTY

Model No. Serial No. Date of Purchase

(To be ﬁlled in by purchaser)

Corporate Headquarters

2701 Industrial Drive P.O. Box 90004

Bowling Green, KY 42102-9004 www.desatech.com

103685 01

NOT A UPC

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.

103685-01 Rev. E 02/99