Desa BTU-HR User Manual

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KEROSENE/DIESEL PORTABLE FORCED AIR HEATERS

OWNER’S MANUAL

New

Straight

Shell

Design

HEATER SIZES: 40,000 50,000 55,000 60,000 70,000 110,000

115,000 155,000 165,000 AND 200,000 BTU/HR MODELS

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

Unpacking ........................................................... 3

Product Identification .......................................... 3

Fuels ................................................................... 4

Ventilation ........................................................... 4

Theory of Operation ............................................ 4

Assembly ............................................................ 5

Operation ............................................................ 5

Operation With Portable Generator ..................... 6

Storing, Transporting, or Shipping ....................... 6

Preventative Maintenance Schedule................... 7

Troubleshooting ................................................... 7

Service Procedures ............................................. 9

Specifications .................................................... 15

Wiring Diagrams ............................................... 16

Illustrated Parts Breakdown and Parts List ....... 18

Replacement Parts ........................................... 30

Technical Service .............................................. 31

Accessories ....................................................... 31

Warranty and Repair Service ............. Back Cover

Fill In For Your Records

Model No. _______________________

(Located on side panel)

Serial No. _______________________

(Located on fuel tank)

Date of Purchase: _________________

Save this manual for future reference.

For more information, visit www.desatech.com

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:

bon 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 thoroughly 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 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.

Early signs of car-

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 con-

fined 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.

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

• Heater must be grounded. Use only a properly grounded three-wire 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.

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SAFETY INFORMATION

Continued

• 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.

• Warning to New York City Residents For Use Only At Construction Sites in accor-

dance with applicable NYC codes under NYCFD certificate of approval #4803, #4899, #4908, #4909, or #4934.

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.

PRODUCT

IDENTIFICATION

Hot Air Outlet

Fan Guard

Thermostat Knob (Thermostat Models Only)

Hot Air Outlet

Fuel Tank

Side Cover

Ignition Control Assembly (On Inside of Side Cover)

Fan Guard

ON/OFF Switch with Light

Thermostat Knob (Thermostat Models Only)

Fuel Cap/Gauge

Figure 2 - 50/55/60/70 Models

Thermostat Knob

Fuel

Hot Air Outlet

Fuel Tank

Side Cover

Ignition Control Assembly (On Inside of Side Cover)

Cap/ Gauge

Fan Guard

ON/OFF Switch with Light

(Thermostat Models Only)

Figure 3 - 110/115/155/165 Models

Hot Air Outlet

Thermostat Knob (Thermostat Models Only)

Air Filter End Cover

Fuel Tank

Side Cover

Ignition Control Assembly (On Inside of Side Cover)

Figure 1 - 40 Models

Fuel Cap

Air Filter End Cover

Fuel Cap/ Gauge

Side Cover

Ignition Control Assembly (On Inside of Side Cover)

Fan

Guard ON/OFF Switch with Light

Figure 4 - 200 Model

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FUELS

VENTILATION

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:

DIESEL ONLY (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.

Use a KEROSENE ONLY (blue) or

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:

quires one of the following:

• a two-car garage door [16 feet (4.88 meter)

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

• two, 30 inch (76.2 cm) windows raised 15

A 200,000 Btu/Hr (58.6kw) heater re-

opening] raised 5 inches (12.7 cm)

opening] raised 8 inches (20.3 cm)

inches (38.1 cm)

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

Ignitor

Fan

Air Pump

Motor

Air Intake Filter

Clean Heated Air Out

Fuel

Nozzle

Tank

Air For Fuel System

Figure 5 - Cross Section Operational View

Fuel Filter

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Air Line To Burner

Air For Combustion And Heating

Ignition Control Assembly

Cool Air In

Air Output Filter

Fuel

ASSEMBLY

(FOR 110/115/155/165/200 MODELS ONLY)

These models are furnished with wheels and a handle. Some models are furnished with a second handle also. Wheels, handle(s), and the mounting hardware are found in the shipping carton.

Tools Needed

• Medium Phillips Screwdriver

• 3/8" Open or Adjustable Wrench

• Hammer

1. Slide axle through wheel support frame. Install wheel spacers if provided. Install wheels on axle.

IMPORTANT:

extended hub of wheels toward wheel support frame (see Figure 6).

2. Place cap nuts on axle ends. Gently tap with hammer to secure.

3. Place heater on wheel support frame. Line up holes on fuel tank ﬂange with holes on wheel support frame.

4. Place handle(s) on top of fuel tank ﬂange. Insert screws through handle(s), fuel tank ﬂange, and wheel support frame. Attach nut ﬁnger tight after each screw is inserted.

5. After all screws are inserted, tighten nuts ﬁrmly.

Hot Air Outlet

Fuel Tank Flange

Wheel Support Frame

Nut

Cap Nut

Figure 6 - Wheel and Handle Assembly,

110/115/155/165/200 Models Only

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When installing wheels, point

Cord Cleat with Bolts and Nuts (If Provided Set of Two for Right or Left Side)

Screw

Axle

Wheel

Wheel Spacer (If Provided)

Handle

Air Inlet

Extended Hub

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IMPORTANT: Review and understand the warnings in the

Information

They are needed to safely operate this heater. Follow all local ordinances and codes when using this heater.

TO START HEATER

1. Follow all ventilation and safety information.

2. Locate heater to provide maximum circulation

3. Fill fuel tank with kerosene, #1#2 diesel/fuel

4. Attach fuel cap.

5. For thermostat models, turn thermostat knob

6. Plug heater’s power cord into approved,

8. For thermostat models, adjust thermostat knob

TO STOP HEATER

Without ON/OFF Switch

Unplug extension cord from outlet.

With ON/OFF Switch

Push ON/OFF switch to OFF (O) position. Unplug heater when not in use.

OPERATION

Safety

section, page 2.

of the heated air. Follow all location requirements noted in Safety Information, page 2.

oil, JET A or JP-8 fuel.

clockwise to the high position.

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

Plug extension cord into standard 120 volt/60 hertz, 3-prong grounded outlet.

Note:

For heater without ON/OFF switch, ignitor will preheat for five seconds, then heater will start.

Note:

For heater with ON/OFF switch, push switch to ON(|) position and heater should start in 5 seconds. If heater does not start, see Troubleshooting, page 7.

to the desired setting. affect the thermostat 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

OPERATION

Continued

TO RESTART HEATER

Wthout ON/OFF Switch

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

2. Repeat steps under To Start Heater.

With ON/OFF Switch

1. Push ON/OFF switch to OFF (O) position and wait 10 seconds (2 minutes if heater has been running).

2. Repeat steps under To Start Heater, page 5.

ON/OFF Switch with Light

Figure 7 - ON/OFF Switch, 50/55/60/70 Models

ON/OFF Switch with Light

Figure 8 - ON/OFF Switch, 110/115/155/

165/200 Models

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.

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, page 5, for starting, stopping, and resetting heater procedures.

Alternator

Figure 9 - Typical Generator Grounding

Method (Generator construction may

vary from that shown)

Ground Lug

Copper or Brass Grounding Point

Ground Wire (#10 AWG - StrandedCopper)

STORING,

TRANSPORTING, OR

SHIPPING

Note:

If shipping, transport companies require fuel

tanks to be empty.

1. Drain fuel tank. 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:

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

Note:

Some models have

Do not store kerosene over sum-

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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, page 6

See Air Output, Air Intake, and Lint Filters, page 9

See Fuel Filter, page 10

See Fan, page 9

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

POSSIBLE CAUSE

1. No power to heater

2. ON/OFF switch not in the ON(|) position

3. If equipped, thermostat setting is too low

REMEDY

1. Check circuit breaker in electrical panel

2. Verify the ON/OFF switch is in ON (|) position and light is on

3. Turn thermostat knob to a higher setting

WARNING: High voltage!

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

5. Binding pump rotor

6. Defective ignition control assembly

7. Defective motor

8. Blown fuse or ignitor control assembly

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4. Check all electrical connections. See Wiring Diagrams, page 16

5. If fan does not turn freely, see Pump Rotor, page 14

6 Replace ignition control as-

sembly

7. Replace motor

8. See Ignition Control Assem- bly, page 15

FAULT CONDITION

Motor starts and runs but heater does not ignite

TROUBLESHOOTING

Continued

POSSIBLE CAUSE

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!

REMEDY

1. Fill tank with kerosene

2. See Pump Pressure Adjust- ment, page 10

3. See Fuel Filter, page 10

4. See Nozzle Assembly, page 13

5. Drain and ﬂush fuel tank with clean kerosene. See Storing,

Transporting, or Shipping,

page 6

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

6. Bad electrical connection between ignitor and ignition control assembly

7. Defective ignitor

8. Defective ignition control assembly

9. 200 Model Only: Defective fuel valve (Models equipped with fuel valve only)

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 Wiring Diagrams, page 16

7. Replace ignitor, see page 11

8. Replace ignition control assembly

9. See Fuel Valve, page 11

1. See Pump Pressure Adjust- ment, page 10

2. See Air Output, Air Intake, and Lint Filters, page 9

3. See Fuel Filter, page 10

4. See Nozzle Assembly, page 13

5. Make sure photocell boot is properly seated in bracket

6. Clean photocell lens

7. Check electrical connections. See Wiring Diagrams, page 16

8. Replace photocell

9. Replace ignition control assembly

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SERVICE PROCEDURES

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

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 10 or 11.

2. Lift upper shell off.

3. Remove fan guard.

Screw

Upper Shell

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 13).

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.

Fan

Setscrew

Fan Guard

Figure 10 - Upper Shell Removal,

40/50/55/60/70 Models Only

Screw

Upper Shell

Motor Shaft

Figure 12 - Fan, Motor Shaft, and

Setscrew Location

Setscrew

Motor

Motor Shaft

Figure 13 - Fan Cross Section

Fan

Flush

AIR OUTPUT, AIR INTAKE AND LINT FILTERS

1. Remove upper shell (see Figure 10 or 11).

2. Remove filter end cover screws using 5/16" nut-

Fan Guard

Figure 11 - Upper Shell Removal, 110/115/155/165/200 Models Only

FAN

IMPORTANT:

fore removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch (see Figure 12).

1. Remove upper shell (see Figure 10 or 11).

2. Use 1/8" allen wrench to loosen setscrew which holds fan to motor shaft.

3. Slip fan off motor shaft.

113282-01C 9

Remove fan from motor shaft be-

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driver (see Figure 14 or Figure 15, page 10).

3. Remove filter end cover.

4. Replace air output and lint filters.

5. Wash or replace air intake filter (see Preven- tative Maintenance Schedule, page 7).

Air Intake Filter

Filter End Cover

Lint Filter

Figure 14 - Air Output, Air Intake, and

Lint Filters, 40/50/55/60/70 Models Only

Air Output Filter

SERVICE PROCEDURES

Continued

6. Replace filter end cover.

7. Replace fan guard and upper shell.

IMPORTANT:

Lint Filter

Figure 15 - Air Output, Air Intake, and Lint

Filters, 110/115/155/165/200 Models Only

PUMP PRESSURE ADJUSTMENT

1. Remove pressure gauge plug from filter end cover (see Figure 16).

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

3. Start heater (see Operation, page 5). 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 17).

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

Pressure Gauge Plug

Do not oil filters.

Air Intake Filter

Filter End Cover

Air Output Filter

Relief Valve

FUEL FILTER

1. Remove side cover screws using 5/16" nutdriver.

2. Remove side cover.

3. Pull upper fuel line off fuel filter neck (see Figure 18 or 19).

4. Carefully pry bushing, fuel filter, and lower fuel line (110/115/155/165/200 Models only) out of fuel tank (see Figure 19).

Wash fuel filter with clean fuel and replace in tank.

6. Attach upper fuel line to fuel filter neck.

7. Replace side cover.

Fuel Filter and Bushing

Side Cover

Figure 18 - Fuel Filter Removal,

40/50/55/60/70 Models

Fuel Filter, Bushing, and Lower Fuel Line

Upper Fuel Line

Figure 16 - Pressure Gauge Plug

Removal (40/55/60/70 Models Shown)

Pump

Model Pressure

40 3.0 PSI 50 3.4 PSI 55 3.4 PSI 60 3.4 PSI

70 4.7 PSI 110 5.1 PSI 115 5.1 PSI 155 5.2 PSI 165 5.6 PSI 200 6.2 PSI

Pressure Gauge

Figure 17 - Adjusting Pump Pressure

(40/50/55/60/70 Models Shown)

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Side Cover

Upper Fuel Line

Figure 19 - Fuel Filter Removal,

110/115/155/165/200 Models

SERVICE PROCEDURES

Continued

IGNITOR

1. Remove upper shell and fan guard (See Upper Shell Removal, page 9).

2. Remove fan (see page 9).

3. Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figures 18 or 19, page 10).

4. Disconnect ignitor wires from ignition control assembly (see Figure 20). 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 20).

6. Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 21 or 22).

7. Remove ignitor screw with a 1/4" nut driver for models using ignitor HA1000 or 5/16" nut driver for models using 102548-08 ignitor. Carefully remove ignitor from nozzle adapter bracket.

CAUTION: Do not bend or

strike ignitor element. Handle

Combustion Chamber

Air Line Hose

Fuel Line Hose

Photocell Bracket

Photocell Assembly

Side Cover

Figure 20 - Disconnecting Ignitor Wires

from Ignition Control Assembly

Ignitor Screw/ Washer Assembly

Ignitor

Element Photocell Bracket

Nozzle Adapter Bracket

Ignitor

Ignitor Wire

Ignition Control Assembly

Ignitor

Nozzle Adapter Bracket

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 1/4" nut driver for models using ignitor HA1000 or 5/16" nut driver for models using 102548-08 ignitor (see Figure

23). Torque .90 to 1.69 N-m (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 (see Figure 20).

12. Replace side cover (see Figures 18 or 19, page 10).

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 14.

14. Replace photocell in photocell bracket. Route wires as shown in either (see Figures 23, 24 or 27, page 12).

15. Replace fan (see page 9).

16. Replace fan guard and upper shell (see page 9).

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Combustion Chamber

Nozzle Adapter Bracket Opening

Figure 21 - Ignitor HA1000 Replacement

Ignitor

Ignitor Element

Photocell Bracket

Nozzle Adapter Bracket Opening

Nozzle Adapter Bracket

Combustion Chamber

Figure 22 - Ignitor 102548-08 Replacement

SERVICE PROCEDURES

Continued

Combustion Chamber

Nozzle Adapter Bracket

Photocell Bracket

Air Line Hose

Figure 23 - Removing Air and Fuel Line

Hoses (40/50/55/60/70 Models Only)

Combustion Chamber

Nozzle Adapter Bracket

Air Line Hose

Fuel Line Hose

Figure 24 - Removing Air and Fuel Line

Hoses (110/115/155/165 Models Only)

NOZZLE ASSEMBLY

(For 40/50/55/60/70/110/115/155/165 Models Only)

1. Remove upper shell (see Upper Shell Removal, page 9).

2. Remove fan (see Fan, page 9).

3. Remove fuel and air line hoses from nozzle assembly (see Figure 23 or 24).

4. Turn nozzle assembly 1/4 turn to left and pull toward motor to remove (see Figure 25).

Nozzle/ Adapter Assembly

Fuel Line Hose

Nozzle/ Adapter Assembly

Photocell Bracket

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 26).

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 4.5 to 5.1 N-m (40 to 45 in-lbs). See Figure 26.

10. Attach nozzle assembly to burner strap (see Figure 25).

11. Attach fuel and airline hoses to nozzle assembly. See Fuel and Airline Replacement and Proper Routing, page 14.

12. Replace fan (see Fan, page 9).

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

Combustion Chamber

Nozzle/ Adapter Assembly

Figure 25 - Removing Nozzle/Adapter

Nozzle Face

Nozzle

Nozzle Adapter

Assembly

Nozzle Sleeve

Air Line Fitting

Fuel Line Fitting

Figure 26 - Nozzle and Nozzle Adapter

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SERVICE PROCEDURES

Continued

(For 200 Model Only)

1. Remove combustion chamber and ignitor by following steps 1 through 7 under Ignitor, pages 11 and 12.

2. Carefully place the ignitor in a safe location.

3. Remove two nozzle adapter bracket screws (see Figure 27).

4. Place hex-shaped aluminum nozzle adapter into vise (do not overtighten).

5. Carefully remove nozzle from nozzle adapter using 5/8" socket wrench (see Figure 28).

6. Blow compressed air through face of nozzle. This will remove any debris in nozzle.

7. Inspect nozzle seal for damage.

8. Replace nozzle into nozzle adapter until nozzle seats. Tighten 80-110 inch-pounds.

9. Attach nozzle adapter bracket to combustion chamber with two screws removed in step 3.

10. Repeat steps 9 through 16 under Ignitor, page 11.

Combustion Chamber

Nozzle Adapter Bracket

Nozzle Adapter Bracket Screw

FUEL AND AIR LINE REPLACEMENT AND PROPER ROUTING

1. Remove upper shell (see Upper Shell Removal, page 9).

2. Remove side cover screws using 5/16" nut driver (see Figure 18 or 19, page 10).

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 23 or 24, page 12, or Figure 27) and from fuel filter (see Fuel Filter, page 10). If air line hose is damaged, disconnect from nozzle adapter (see Figure 23 or 24, page 12, or Figure 27) and from barb fitting on pump end cover (see Figure 29).

5. Install new air and/or fuel line. Attach one end of air line hose to barb fitting on pump end cover (see Figure 29) and the other end to nozzle adapter (see Figure 23 or 24, page 12, or Figure

27). Attach one end of fuel line hose to fuel filter (see Fuel Filter, page 10) and the other end to nozzle adapter (see Figure 23 or 24, page 12, or Figure 27).

Note:

Route hoses as shown in see Figure 23 or 24, page 12, or Figure 27, according to model. Hoses are not to touch photocell bracket.

6. Replace side cover.

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

Photocell Bracket

Air Line Hose

Figure 27 - Removing Air and Fuel Line

Hoses (200 Model Only)

Nozzle Face

Nozzle

Nozzle Adapter Bracket

Nozzle Sleeve

Air Line Fitting

Nozzle/ Adapter Assembly

Fuel Line Hose

Nozzle Adapter

Fuel Line Fitting

Pump End Cover

40/50/55/60/70

Models

Barb Fitting

Air Hose

Barb Fitting

110/115/155/165/200

Models

Figure 29 - Air Hose to Barb Fitting

Figure 28 - Nozzle and Nozzle Adapter

113282-01C 13

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SERVICE PROCEDURES

Continued

PUMP ROTOR

(Procedure if Rotor is Binding)

1. Remove upper shell (see Upper Shell Removal, page 9).

2. Remove filter end cover screws using 5/16" nut driver (see Figure 30 or 31).

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 30 or 31).

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 .076/.101 mm (.003"/.004") if needed (see Figure 32).

Note:

Rotate rotor one full turn to ensure the gap is .076/.101 mm (.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 (see Upper Shell Removal, page 9).

12. Adjust pump pressure (see Pump Pressure Adjustment, page 10).

Note:

If rotor is still binding, proceed as

follows.

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 33).

15. Reinstall insert and rotor.

16. Perform steps 10 through 12.

Pump Plate

Air Intake Filter

Filter End Cover

Blade

Pump Plate

Air Intake Filter

Insert

Rotor

Air Output Filter

Filter End Cover

Figure 31 - Rotor Location, 110/115/155/

165/200 Models

Gap Adjusting Screw

Blade

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

Rotor

Gap Adjusting Screw

Figure 32 - Gap Adjusting Screw Locations

Sandpaper

Figure 33 - Sanding Rotor

Insert

Rotor

Air Output Filter

Figure 30 - Rotor Location, 40/50/55/60/

70 Models

www.desatech.com 113282-01C

SERVICE PROCEDURES

Continued

IGNITION CONTROL ASSEMBLY

Fuse Clips

Fuse Cover

WARNING: High voltage!

1. Unplug heater.

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

3. Remove fuse cover (see Figure 34).

4. Remove fuse from fuse clips (see Figure 34).

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 (see Figure 34).

7. Replace side cover (see Figures 18 or 19, page 10).

Figure 34 - Replacing Fuse

Fuse

SPECIFICATIONS

Model Size 40 50/55/60 70 110/115 155 165 200

Output Rating (Btu/Hr) 40,000 50/55/ 70,000 110,000 155,000 165,000 200,000

Fuel Use only kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels* Fuel Tank Capacity

(U.S. Gal./Liters) 3/11.3 5/18.9 5/18.9 9/34 13.5/51 13.5/51 13.5/51

Fuel Consumption

(Gal. Per Hr/Liters Per Hr) .3/1.14 .44/1.67 .52/1.97 .85/3.00 1.14/4.31 1.2/4.54 1.4/5.3 Pump Pressure (psi) 3.0 3.4 4.7 5.1 5.2 5.6 6.2 Electric Requirements 120 V/60 HZ (Same All Models) Amperage (Normal Run) 2.0 2.0 2.8 3.6 3.6 3.6 3.6 Motor RPM 1725 1725 3440 3400 3400 3400 3400 Hot Air Output (CFM) 170 180 360 490 550 575 600 Motor HP 1/15 1/15 1/8 1/5 1/5 1/5 1/4 Shipping Weight 32/14.5 34/15.4 36/16.3 56/25.4 69/31.3 71/32.2 83/37.6

(Approximate Pounds/Kilograms) Heater Weight without Fuel 28/12.7 30/13.6 32/14.5 48/21.8 60/27.2 61/27.7 72/32.7

(Approximate Pounds/Kilograms)

* 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.

& 60,000 & 115,000

113282-01C 15

www.desatech.com

WIRING DIAGRAMS

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignition Control Assembly

Motor

Ignitor

Blue

White

Red

Black

Yellow

(40 Models)

Photocell

Green

White

Motor

Ignitor

Green

Yellow

Power Plug

120V/60Hz

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignition Control Assembly

Motor

Ignitor

Blue

White

Green

Red

Black

Yellow

Photocell

Motor

Ignitor

Green

Black

Yellow

Black

White

Power Plug

120V/60Hz

ON/OFF Switch

with Light

(50/55/60/70/110/115/155/165/200 Models)

Figure 35 - Wiring Diagram without Thermostat

(40/50/55/60/70/110/115/155/165/200 Models with Ignitor HA1000)

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignition Control Assembly

Motor

Ignitor

Blue

White

Green

Red

Black

Tan

Photocell

Motor

Ignitor

Green

Black

Ta n

White

Power Plug 120V/60Hz

ON/OFF Switch

with Light

Figure 36 - Wiring Diagram without Thermostat

(50/55/60 Models with Ignitor 102548-08)

www.desatech.com 113282-01C

WIRING DIAGRAMS

Continued

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignition Control Assembly

Motor

Ignitor

Blue

White

Green

Red

Black

Yellow

Photocell

White

Motor

Ignitor

Green

Yellow

Thermostat

Power Plug 120V/60Hz

Black

(40 Models)

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignition Control Assembly

Motor

Ignitor

Blue

White

Green

Red

Black

Yellow

Photocell

Motor

Ignitor

White

Green

Black

Yellow

Black Thermostat

Power Plug 120V/60Hz

ON/OFF Switch

with Light

(50/55/60/70/110/115/155/165/200 Models)

Figure 37 - Wiring Diagram with Thermostat

(40/50/55/60/70/110/115/155/165/200 Models with Ignitor HA1000)

Photocell

Blue

Photocell

White

Ignitor

Motor

Ignitor

Green

Black

Ta n

Black Thermostat

Power Plug 120V/60Hz

ON/OFF Switch

with Light

Motor Return

AC Neutral (L2)

120V (L1)

Ignition Control Assembly

Motor

Ignitor

White

Green

Red

Black

Tan

Figure 38 - Wiring Diagram with Thermostat

(50/55/60 Models with Ignitor 102548-08)

113282-01C 17

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ILLUSTRATED PARTS BREAKDOWN

STANDARD MODEL R40, REM40, PK40, UK40, TK40, N40

THERMOSTAT MODELS R40T, REM40T, PK40T, UK40T, TK40T, N40T

110/115 Burner Head Assembly

9-1

9-2

9-3

9-4

www.desatech.com 113282-01C

PARTS LIST

40 MODELS

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.

KEY PART NO. NUMBER DESCRIPTION QTY.

1 M51104-01 Handle 1 2 098511-67 Upper Shell (Service Part Will Be Black) 1 3 M11084-29 Screw, #10-16 x 3/4" 2 4 M15823-27 Screw, #10-16 x 1 1/2" 6 5 098512-58 Combustion Chamber 1 6 M10908-2 Screw, #6-32 x 3/8" 2 7 103154-03 Photocell Bracket 1 8 M16656-24 Photocell Assembly 1 9 (See page 26) Burner Head Assembly 10 M11084-26 Screw, #10-16 x 3/8" 2 11 103684-01 Fan 1 12 (See page 27) Motor and Pump Assembly 1 13 M51105-01 Fan Guard 1 14 098219-38 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" 8 18 M50631 Rubber Bumper 2 19 097461-16 Side Cover 2 20 101205-01 Motor Bracket 1 21 M50104-06 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 098511-234 Lower Shell (Service Part Will Be Black) 1 27 M50814-06 Rubber Airline 1 28 079973-01 Fuel Line 1 29 M50876-04 Fuel Filter with bushing 1 30 M10990-3 Rubber Bushing 1 31 102349-01 PCB Support 5 32 104068-02 Ignition Control Assembly 1 33 097702-01 Fuel Cap (Includes Gasket) 1 34 108088-01 Fuel Tank 1 35 M51108-01 Shell Heat-Shield 1 36 104458-01 Thermostat 1 37 M12461-18 Screw, #8-32 x 7/8" 1 38 104460-01 Thermostat Knob 1 39 WLE-2 Lock Washer, EXT #8 1

PARTS AVAILABLE - NOT SHOWN

103814-01 Wire Tie (For Ignition Control Assembly) 1 M9900-170 Wire Assembly

(Thermostat to Ignition Control Assembly) 1

113282-01C 19

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ILLUSTRATED PARTS BREAKDOWN

STANDARD MODEL

R50, REM50, R55C, R60A, PK55, UK55,TK50, TK55,B55C, REM60A, R70E, B70E, RM60A, PK60, UK60, PK70, UK70

THERMOSTAT MODELS

R50T, REM50T, R55CT, R60AT, PK55T, UK55T,TK50T, TK55T, B55CT, REM60AT, R70ET, B70ET, RM60T, PK60T, UK60T, PK70T, UK70T

9-1

9-5

9-4

9-3

www.desatech.com 113282-01C

PARTS LIST

50/55/60/70 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 M51104-01 Handle 1 2 098511-67 Upper Shell (Service Part Will Be Black) 1 3 M11084-29 Screw, #10-16 x 3/4" 2 4 M15823-27 Screw, #10-16 x 1 1/2"6 5 098512-50 Combustion Chamber (50/55/60) for use with

098512-76 Combustion Chamber (50/55/60) for use with

098512-51 Combustion Chamber (70) 1 6 M10908-2 Screw, #6-32 x 3/8" 2 7 103154-03 Photocell Bracket 1 8 M16656-24 Photocell Assembly 1 9

(See page 26)

10 M11084-26 Screw, #10-16 x 3/8" 2 11 103684-01 Fan (50/55/60) 1

M29678 Fan (70) 1 12

(See page 27)

13 M51105-01 Fan Guard 1 14 113065-01 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" 8 18 M50631 Rubber Bumper 2 19 097461-16 Side Cover 2 20 101205-01 Motor Bracket 1 21 M50104-06 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 098511-234 Lower Shell (Service Part Will Be Black) 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 102349-01 PCB Support 5 32 104068-02 Ignition Control Assembly 1 33 097663-04 Fuel Cap w/ Gauge (includes Gasket)

113280-01 Fuel Cap w/ Gauge (includes Gasket)

34 108088-16 Fuel Tank (Metal Filler Neck) 1

113279-01 Fuel Tank (Plastic Filler Neck) 1 35 M51108-01 Shell Heat-Shield 1 36 104458-01 Thermostat 1 37 M12461-18 Screw, #8-32 x 7/8" 1 38 104460-01 Thermostat Knob 1 39 WLE-2 Lock Washer, EXT #8 1 40 113461-01 ON/OFF Switch 1

103814-01 Wire Tie (For Ignition Control Assembly) 1

M9900-170 Wire Assembly

079010-46 Wire Assembly (Connects Switch to Thermostat

Ignitor HA1000 1

Ignitor 102548-08 1

Burner Head Assembly

Motor and Pump Assembly 1

(Use with Fuel Tank 108088-16) 1

(Use with Fuel Tank 113279-01) 1

PARTS AVAILABLE - NOT SHOWN

(Thermostat to Ignition Control Assembly) 1

or Ignition Control) 1

113282-01C 21

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ILLUSTRATED PARTS BREAKDOWN

STANDARD MODELS PK110, R110D, R115D, B115D, PK115, UK110, TK110, TK115, REM115D, RM115D, B155D, REM155D, R165D, RM155D, PK155, UK155, TK155, B165D, R155D, B110D, RM110D, RM165D, REM110D, REM165D, PK165, UK165

THERMOSTAT MODELS R110DT, R115DT, B115DT, REM115DT, RM115DT, PK115T, UK110T, TK110T, TK115T, B155DT, REM155DT, R165DT, RM155DT, B165DT, PK155T, UK155T, TK155T, R155DT, B110DT, RM110DT, RM165DT, PK165T, UK165T, TK165T, REM110DT, REM165DT, SB115DT, SB165DT

Upper Tier Burner He

7-1

7-4

7-5

www.desatech.com 113282-01C

PARTS LIST

110/115/155/165 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 098511-292 Upper Shell (Service Part Will Be Black) 1 2 M15823-27 Screw, #10-16 x 1/2" 8 3 098512-71 Combustion Chamber (110/115) 1

098512-74 Combustion Chamber (155) 1 098512-75 Combustion Chamber (165) 1

4 103154-05 Photocell Bracket (110/115) 1

M16660-02 Photocell Bracket (155/165) 1 5 M10908-2 Screw, #6-32 x 3/8" 2 6 M16656-24 Photocell Assembly 1 7

(See page 26)

8 M11084-26 Screw, #10-16 x 3/8" 2 9 097293-01 Fan (110/115/155) 1

102042-01 Fan (165) 1 10

(See page 28)

11 M50631 Rubber Bumper 2 12 101206-01 Motor Mounting Bracket 1 13 M12461-18 Screw, #8-32 x 7/8" 1 14 104068-02 Ignition Control Assembly 1 15 NTC-4C Hex Lock Nut, 1/4-20 2 16 111037-01 Fan Guard 1 17 M27417 Drain Plug (Includes “o” Ring) 1 18 107878-02 Button Plug 1 19 M51345-06 Fuel Line 1 20 106896-01 Fuel Filter 1 21 M51151-01 Fuel Line Tube (110/115) 1

M51151-02 Fuel Line Tube (155/165) 1 22 M10990-3 Rubber Bushing 1 23 M50814-03 Airline 1 24 098511-293 Lower Shell (Service Part Will Be Black) 1 25 M50104-06 Bushing 1 26 M50104-01 Bushing 1 27 M11084-26 Screw, #10-16 x 3/8" 6 28 M11271-8 Clip Nut 8 29 M10908-14 Screw, #8-32 x 3/8" 1 30 108088-11 Fuel Tank (Metal Filler Neck) 110/115 1

108088-10 Fuel Tank (Metal Filler Neck) 155/165 1

113279-02 Fuel Tank (Plastic Filler Neck) 110/115 1

113279-03 Fuel Tank (Plastic Filler Neck) 155/165 1 31 097663-02 Fuel Cap w/ Gauge (includes Gasket) 110/115

097663-03 Fuel Cap w/ Gauge (includes Gasket) 155/165

113280-02 Fuel Cap w/ Gauge (includes Gasket) 110/115

113280-03 Fuel Cap w/ Gauge (includes Gasket) 110/115

32 102349-01 P.C. Board Support 5 33 M11143-1 Strain Relief Bushing 1 34 113065-01 Power Cord 1 35 M51077-18 Side Cover 2 36 M11084-26 Screw, #10-16 x 3/8" 8 37 104460-01 Thermostat Knob 1 38 104458-01 Thermostat 1 39 WLE-2 Lock Washer, EXT #8 1 40 113461-01 ON/OFF Switch with Light 1

103814-01 Wire Tie (Not Shown - Groups wires connected

M9900-77

079010-46 Wire (Not Shown - Connects ON/OFF Switch to Ignition

113282-01C 23

Burner Head Assembly 1

Motor and Pump Assembly 1

(Use with Fuel Tank 108088-11) 1

(Use with Fuel Tank 108088-10) 1

(Use with Fuel Tank 113279-02) 1

(Use with Fuel Tank 113279-03) 155-165 1

to Ignition Control Assembly) 1 Wire (Not Shown - Connects T-stat to Ignition Control Assembly)

Control Assembly or Thermostat if Equipped) 1

www.desatech.com

ILLUSTRATED PARTS BREAKDOWN

STANDARD MODELS

R200B, PK200, UK200, TK200

THERMOSTAT MODELS

RM200BT, B200BT, PK200T, UK200T, TK200T, REM200BT, R200BT

23 19

www.desatech.com 113282-01C

PARTS LIST

200 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 107353-10 Upper Shell (Service Part Will Be Black) 1 2 M15823-27 Screw, #10-16 x 1/2" 8 3 098512-69 Combustion Chamber 1 4 103154-05 Photocell Bracket 1 5 M10908-2 Screw, #6-32 x 3/8" 2 6 M16656-24 Photocell Assembly 1 7

(See page 26)

8 M11084-26 Screw, #10-16 x 3/8" 2 9 102042-01 Fan 1 10

(See page 29)

11 M50631 Rubber Bumper 2 12 101206-01 Motor Mounting Bracket 1 13 097785-04 Foam Gasket 2 14 104068-02 Ignition Control Assembly 1 15 NTC-4C Hex Lock Nut, 1/4-20 2 16 102756-01 Fan Guard 1 17 M27417 Drain Plug (Includes “o” Ring) 1 18 103523-01 Rubber Bushing 1 19 M51345-03 Fuel Line (Models with Fuel Valve Assembly) 1

M51345-04 Fuel Line (Models without Fuel Valve Assembly) 1 20 M51150-01 Fuel Filter 1 21 M51345-04 Fuel Line Tube

M51151-02 Fuel Line Tube (Models without Fuel Valve Assembly) 1 22 M10990-3 Rubber Bushing 1 23 M50814-03 Airline 1 24 107353-11 Lower Shell (Service Part Will Be Black) 1 25 M50104-06 Bushing 2 26 M50104-01 Bushing 1 27 M11084-26 Screw, #10-16 x 3/8" 6 28 M11271-8 Clip Nut 8 29 M10908-14 Screw, #8-32 x 3/8" 1 30 108088-17 Fuel Tank (Metal Filler Neck) 1

113279-04 Fuel Tank (Plastic Filler Neck) 1 31 097663-03 Fuel Cap w/ Gauge (includes Gasket)

113280-03 Fuel Cap w/ Gauge (includes Gasket)

32 102349-01 P.C. Board Support 5 33 M11143-1 Strain Relief Bushing 1 34 113065-01 Power Cord 1 35 107333-04AA Side Cover 1 36 M11084-26 Screw, #10-16 x 3/8" 8 37 099230-01 Screw, Special 2 38 M11084-27 Screw, #10-16 x 1/2" 2 39 113461-01 ON/OFF Switch with Cover 1 40 104458-01 Thermostat 1 41 M12461-18 Screw, #8-32 x 7/8" 1 42 104460-01 Thermostat Knob 1 43 079010-35 Wire Assembly 1 44 WLE-2 Lock Washer, EXT #8 1

103814-01 Wire Tie

100621-06 Thermostat Decal (Not Shown) 1

079010-46 Wire (Not Shown - For ON/OFF Switch) 1

Burner Head Assembly 1

Motor and Pump Assembly 1

(Models with Fuel Valve Assembly)

(Use with Fuel Tank 108088-17) 1

(Use with Fuel Tank 113279-04) 1

(Not Shown - For Ignition Control Assembly)

113282-01C 25

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ILLUSTRATED PARTS BREAKDOWN

BURNER HEAD ASSEMBLY FOR 40/50/55/60/70 MODELS WITH HA1000 IGNITOR

BURNER HEAD ASSEMBLY FOR 50/55/60 MODELS WITH 102548-08 IGNITOR

KEY PART NO. NUMBER DESCRIPTION QTY.

1 HA3006 Nozzle Assembly (40) 1

HA3024 Nozzle Assembly (50/55/60) 1

HA3026 Nozzle Assembly (70) 1 2 HA1000 Ignitor Kit 1 3 104056-01 Nozzle Adapter 1 4 102336-01 Nozzle Adapter Bracket 1 5 M10908-75 Screw, Hex Head, Tapping 1 6 103347-01 Belleville Washer 1

KEY PART

NO. NUMBER DESCRIPTION QTY.

1 HA3024 Nozzle Assembly 1 2 102548-08 Ignitor Kit 1 3 102336-05 Nozzle Adapter Bracket 1 4 104056-01 Nozzle Adapter 1

BURNER HEAD ASSEMBLY FOR 110/115/155/165 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 HA3027 Nozzle Assembly (110/115) 1

HA3028 Nozzle Assembly (155/165) 1 2 HA1000 Ignitor Kit 1 3 M10908-75 Screw, #6-32 x 7/8" 1 4 102336-01 Nozzle Adapter Bracket 1 5 104054-01 Nozzle Adapter 1 6 103347-01 Washer 1

NOZZLE/BURNER HEAD ASSEMBLY FOR 200 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 100735-13 Nozzle Assembly 1

2 M10659-1 Nozzle Washer 2

3 M10809-1 Nozzle Spring 1 4 M8882 Nozzle Sleeve 1 5 107272-01 Retaining Ring 1 6 102336-03 Nozzle Adapter Bracket 1 7 HA1000 Ignitor Kit 1 8 103347-01 Belleville Washer 1

9 M10908-75 Screw, #6-32 x .88 1 10 107273-01 Nozzle Adapter 1 11 M50820-02 Barb Fitting 1

www.desatech.com 113282-01C

ILLUSTRATED PARTS BREAKDOWN

MOTOR AND PUMP ASSEMBLY FOR 40/50/55/60/70 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 102001-28 Motor (40/50/55/60) 1

102001-29 Motor (70) 1

2 079975-03 Pump Body (50/55/60) 1

079975-02 Pump Body (40/70) 1 3 M22009**, *** Insert 1 4 M22456-2** Rotor (50/55/60) 1

M22456-1*** Rotor (40/70) 1 5 M29608 Pump End Cover 1 6 M29632 ⊕ Lint Filter 1 7 M29633 ⊕ Intake Filter 1 8 M29609 Filter End Cover 1 9 M12461-31 Screw, #10-32 x 1" 3 10 M27694 ∞ Adjusting Screw 1 11 M10993-1 ∞ Pressure Relief Spring 1 12 M22997 ∞ Plug 1 13 M8940 ∞ Steel Ball, 1/4" Diameter 1 14 M29612-01 ⊕ Output Filter 1 15 M12461-32 Screw, #10-32 x 1

M12461-31 Screw, #10-32 x 1" (40/70) 6 16 103676-01 Nylon Elbow, 90° 1 17 M8643-2** Blade (50/55/60) 4

M8643*** Blade (40/70) 4 18 FHPF3-6C Screw, #10-32 x 3/4" (50/55/60) 2

FHPF3-5C Screw, #10-32 x 5/8" (40/70) 2 19 105780-01 Plastic Cap 1

** Included in Rotor Kit (Part No. HA3005) *** Included in Rotor Kit (Part No. HA3004) ⊕ Included in Filter Kit (Part No. HA3014) ∞ Included in Pump Adjustment Kit (Part No. HA3020)

/8" (50/55/60) 6

113282-01C 27

www.desatech.com

ILLUSTRATED PARTS BREAKDOWN

MOTOR AND PUMP ASSEMBLY FOR 110/115/155/165 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 102001-30 Motor 1 2 079975-02 Pump Body 1 3 FHPF3-5C Screw, #10-32 x 5/8" 2 4 M22009** Rotor Insert 1 5 M22456-1** Pump Rotor 1 6 M50545 Pump End Cover 1 7 M12179*** Intake Filter 1 8 M16545 Filter End Cover 1 9 M8940∞ Steel Ball, 1/4" Diameter 1 10 M10993-1∞ Relief Spring 1 11 M27694∞ Adjusting Screw 1 12 M22997∞ Plug 1 13 M12461-31 Screw, #10-32 x 1" 10 14 M12244-1*** Output Filter 1 15 M11637*** Lint Filter 1 16 104096-01 Fitting, Straight Nylon Barb 1 17 M8643** Blade 4

** Included in Rotor Kit (Part No. HA3004)

∗∗∗ Included in Filter Kit (Part No. HA3017) ∞ Included in Pump Adjustment Kit (Part No. HA3020)

www.desatech.com 113282-01C

ILLUSTRATED PARTS BREAKDOWN

MOTOR AND PUMP ASSEMBLY FOR 200 MODELS

KEY PART NO. NUMBER DESCRIPTION QTY.

1 102001-27 Motor 1 2 079975-03 Pump Body 1 3 FHPF3-6C Screw, #10-32 x 5/8" 2 4 M22009** Rotor Insert 1 5 M22456-2** Pump Rotor 1 6 M50545 Pump End Cover 1 7 M12179*** Intake Filter 1 8 M16545 Filter End Cover 1 9 M8940∞ Steel Ball, 1/4" Diameter 1 10 M10993-1∞ Relief Spring 1 11 M27694∞ Adjusting Screw 1 12 M22997∞ Plug 1 13 M12461-31 Screw, #10-32 x 1" 4 14 M12244-1*** Output Filter 1 15 M11637*** Lint Filter 1 16 M50820-02 Barb Fitting 1 17 M8643-2** Blade 4 18 M12461-32 Screw, #10-32 x 1.12" 6 19 105780-01 Plastic Cap 1

∗∗∗ Included in Filter Kit (Part No. HA3017) ** Included in Rotor Kit (Part No. HA3005) ∞ Included in Pump Adjustment Kit (Part No. HA3020)

113282-01C 29

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ILLUSTRATED PARTS BREAKDOWN

WHEELS AND HANDLE PARTS LIST

KEY PART PART NO. NUMBER DESCRIPTION QTY.

1 HA2303 Handle (110/115) 2 (If Equipped)

HA2304 Handle (155/165/200) 2 (If Equipped) 2 M12345-33 Screw, #10-24 x 1 3 M12342-3 Wheel Support Frame (110/115) 1

M12831-5 Wheel Support Frame (155/165/200) 1 4 NTC-3BZ Hex Nut, #10-24 6 or 8 5 107426-01 Wheel Kit (110/115)

113326-01 Pneumatic Wheel Kit (155/165/200)

6 M28526 Cap Nut 2 7 M51015-01 Axle (110/115) 1

M16801-5 Axle (155/165/200) 1 8 113497-01 Wheel Spacer (155/165/200 only) 2 9 113193-01 Cord Cleat Kit

(Contains 2 Wheels and Cap Nuts) 1

(Contains 2 Wheels, Cap Nuts, & Spacers) 1

(Contains 2 Cleats, 4 Nuts and 4 Bolts) 1 (If Equipped)

/4" 6 or 8

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

www.desatech.com 113282-01C

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

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.

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 dealer or DESA Heating Products at 1-866-672-6040 for referral information. Parts Centrals are listed in the Authorized Service Center booklet supplied with heater.

STANDARD WHEELS AND HANDLE KIT HA1206

For 40/50/55/60/70,000 Btu Models. Makes heater even more portable and convenient. Easy to assemble.

AIR GAUGE KIT - HA1180

For all models. Special tool to check pump pressure.

HEAVY DUTY WHEELS AND HANDLE KIT HA1202

For 40/50/55/60/70,000 Btu Models. For heavy duty applications. Makes your heater even more portable and convenient.

IGNITION CONTROL ASSEMBLY/ PHOTOCELL TESTER - HA1170

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

THERMOSTAT KIT - HA1210

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

113282-01C 31

www.desatech.com

WARRANTY AND REPAIR SERVICE

LIMITED WARRANTY

DESA Heating Products 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 Heating Products 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 Heating Products 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. 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 Heating Products.

When writing for information regarding your heater, be sure to include the model number and serial number as shown on the model plate.

For more information about this warranty, write:

Printed in U.S.A.

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

113282 01

NOT A UPC

113282-01 Rev. C 08/04

Desa BTU-HR User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INFORMATION

UNPACKING

FUELS

VENTILATION

THEORY OF OPERATION

ASSEMBLY

OPERATION

PREVENTATIVE MAINTENANCE SCHEDULE

TROUBLESHOOTING

SERVICE PROCEDURES

SPECIFICATIONS

WIRING DIAGRAMS

REPLACEMENT PARTS

TECHNICAL SERVICE

ACCESSORIES

WARRANTY AND REPAIR SERVICE