Desa RC55T Le manuel du propriétaire

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.

CANADIAN PORTABLE

FORCED AIR HEATERS

OWNER’S MANUAL

50 SIDE PFA/PV 010A

Models: RC40, RC55T, RC70T,

RC115T and RC165T

DESA Industries of Canada, Inc. 2220 Argentina Rd. unit #4 Mississauga, Ontario LSN 2K7

®

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TM

TABLE OF CONTENTS

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

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

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

ASSEMBLY ................................................................................. 3

THEORY OF OPERATION ......................................................... 4

FUELS......................................................................................... 5

VENTILATION............................................................................. 5

OPERATION ............................................................................... 5

STORING, TRANSPORTING, OR SHIPPING............................ 6

PREVENTATIVE MAINTENANCE SCHEDULE ......................... 6

TROUBLESHOOTING ................................................................ 7

SERVICE PROCEDURES .......................................................... 8

WIRING DIAGRAMS................................................................. 13

SPECIFICATIONS .................................................................... 14

ACCESSORIES ........................................................................ 15

ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 16

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

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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, explo-

sion, electrical shock, and 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 (such as pregnant women, persons with

heart or lung disease, persons with anemia, those under the inﬂuence

of alcohol, and those at high altitudes) are more affected by carbon

monoxide than others.

Make certain you read and understand all warnings. Keep this

manual for reference. It is your guide to safe and proper operation

of this heater.

WARNINGS

DANGER: Carbon monoxide poisoning may lead

to death!

SAFETY INFORMATION

• 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.

• Use only with 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; 6 feet (183 cm) from top; and 2 feet (61

cm) from sides and inlet.

• Locate heater on a stable and level surface while hot or operat-

ing or a fire may occur.

• Use only in well ventilated areas. Provide ventilation of at least

three square feet (2,800 square cm) for each 100,000 Btu/Hr 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 a 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 block air inlet at motor end (rear) of heater.

• Never attach duct work to front of heater.

• Never attach heater to external fuel tank.

SAFETY INFORMATION

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PRODUCT IDENTIFICATION

Figure 1 - 40 Model

Figure 2 - 55T/70T Models

Handle

Fuel

Cap

Lower

Shell

Power Cord

Fuel Tank

Hot Air

Outlet

Air Filter

End Cover

Fan Guard

Upper Shell

Side Cover

Ignition Control

Assembly

(assembly on inside

of side cover)

Thermostat

Knob

Nose Cone Guard

Side Cover

Fuel

Tank

Lower

Shell

Hot Air

Outlet

Nose Cone Guard

Handle

Upper Shell

Power Cord

Fuel

Cap

Air Filter

End

Cover

Fan Guard

Ignition Control

Assembly

(assembly on inside

of side cover)

Figure 3 - 115T/165T Models

Lower

Shell

Hot Air

Outlet

Fan Guard

Fuel

Tank

Side Cover

Fuel Cap

Upper Shell

Power Cord

Ignition Control

Assembly (assembly on

inside of side cover)

Thermostat

Knob

UNPACKING

1. Remove all protective packaging that has been applied to heater

for shipment

2. Remove heater from carton.

3. Check heater for any shipping damage. If damage is found,

promptly inform dealer where heater was purchased.

ASSEMBLY

(FOR 40, 55T, AND 70T MODELS ONLY)

These models are furnished with a nose cone guard. Nose cone

guard and mounting screws are found in the shipping carton.

Tools Needed

• 5/16" Nut Driver or Wrench

1. Place nose cone guard on top of upper shell flange. Make sure

nose cone guard is on hot air outlet end of heater.

2. Insert screws through nose cone guard and upper shell flange.

3. Tighten screws firmly.

Figure 4 - Nose Cone Guard Assembly, 40/55T/70T Models Only

Nose Cone

Guard

Screw

Hot Air

Outlet

Upper

Shell

Flange

PRODUCT IDENTIFICATION

UNPACKING

ASSEMBLY

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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 combus-

tion chamber.

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

shut down if the flame goes out.

Figure 6 - Cross Section Operational View

(FOR 115T AND 165T MODELS ONLY)

These models are furnished with wheels and a front handle. Some

models are furnished with a rear handle also. Wheels, handle(s), and

the mounting hardware is found in the shipping carton.

Tools Needed

• Medium Phillips Screwdriver

• 3/8" Open or Adjustable Wrench

• Hammer

1. Slide axle through wheel support frame. Install wheels on axle.

IMPORTANT:

Place extended hub of wheel toward wheel

support frame.

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

cure.

3. Place heater on wheel support frame assembly. Make sure air

inlet end of heater is over wheels.

4. Place front handle 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. Tighten all nuts firmly.

Figure 5 - Wheel and Handle Assembly, 115T/165T Models Only

Front

Handle

Hot Air

Outlet

Fuel Tank

Flange

Wheel

Support

Frame

Wheel

Cap Nut

Axle

Nut

Extended Hub

Air Inlet

Screw

ASSEMBLY

Continued

Clean

Heated

Air Out

Fuel

Filter

Air

Output

Filter

Air Pump

Air Intake

Filter

Cool

Air In

Fan

Combustion Chamber

Ignitor

Motor

Air For Fuel

System

Air For

Combustion

And Heating

Fuel

Nozzle

Fuel

Tank

Ignition Control

Assembly

Air Line

To Burner

ASSEMBLY

THEORY OF OPERATON

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Example:

A 165 model heater requires one of the following:

• a two-car garage door (16 ft. [4.88 m] wide opening) raised four

inches (10.16 cm)

• a single-car garage door (9 ft. [2.74 m] wide opening) raised seven

inches (17.78 cm)

• two, thirty-inch (76.20 cm) windows raised twelve inches (30.48

cm)

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 require-

ments must be followed to avoid risks associated

with carbon monoxide poisoning. Make certain these

requirements are met prior to operating heater.

VENTILATION

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:

Use a KEROSENE ONLY (blue) or DIESEL ONLY

(yellow) storage container. Be sure storage container is clean. For-

eign 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.

WARNING: Use only kerosene, #1/#2 diesel/fuel

oil, JET A or JP-8 fuels to avoid risk of ﬁre or explo-

sion. Never use gasoline, oil drained from crank-

cases, naphtha, paint thinners, alcohol or other highly

ﬂammable fuels.

TO START HEATER

1. Follow all ventilation and safety information.

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

8 fuels.

3. Attach fuel cap.

4. For thermostat models 55T, 70T, 115T, and 165T, turn ther-

mostat knob clockwise to the high position.

5. 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 mm

2

)

rated cord

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

mm

2

) rated cord

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

mm

2

) rated cord

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

grounded outlet.

Note:

Ignitor will preheat for five seconds,

then heater will start.

7. For thermostat models 55T, 70T, 115T, and 165T, adjust ther-

mostat knob to the desired setting.

Note:

A cold heater may

affect the thermostat setting. This thermostat is a general-heat-

ing control. It is not intended for precise temperature control.

Adjust thermostat until heater cycles at the desired setting.

TO STOP HEATER

Unplug extension cord from outlet.

TO RESTART HEATER

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.

OPERATION

IMPORTANT: Review and understand the warnings

in the

Safety Information

section. They are needed to

safely operate this heater. Follow all local ordinances

and codes when using this heater.

FUELS

VENTILATION

OPERATION

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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 ex-

cess debris from clogging filters during future use.

WARNING: To avoid risk of burn and electrical

shock, never attempt to service heater while it is

plugged in, operating, or hot.

PREVENTATIVE

MAINTENANCE SCHEDULE

Item How Often How To

Fuel tank Flush every 150-200 hours See Storing, Transporting, or

of operation or as needed Shipping, above

Air output and lint filters Replace every 500 hours of See Air Output, Air Intake,

operation or once a year and Lint Filters, page 8

Air intake filter Wash and dry with soap and See Air Output, Air Intake,

water every 500 hours of and Lint Filters, page 8

operation or replace as needed

Fuel filter Clean twice a heating season See Fuel Filter, page 9

or replace as needed

Ignitor None required

Fan blades Clean every season or See Fan, page 8

as needed

Motor Not required/permanently

lubricated

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:

Do not store kerosene over summer months for use

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

STORING, TRANSPORTING, OR SHIPPING

PREVENTATIVE MAINTENANCE SCHEDULE

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TROUBLESHOOTING

WARNING: Never service heater while it is plugged

in, operating, or hot. Severe burns and electrical

shock can occur.

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 13

4. If fan does not turn freely, see Pump Ro-

tor, page 12

5. Replace ignition control assembly

6. Replace motor

1. Fill tank with kerosene

2. See Pump Pressure Adjustment, page 9

3. See Fuel Filter, page 9

4. See Nozzle Assembly, page 11

5. Drain and ﬂush fuel tank with clean

kerosene. See Storing, Transporting, or

Shipping, page 6

6. Check electrical connections. See Wir-

ing Diagrams, page 13

7. Replace ignitor, see page 10

8. Replace ignition control assembly

1. See Pump Pressure Adjustment, page 9

2. See Air Output, Air Intake, and Lint Fil-

ters, page 8

3. See Fuel Filter, page 9

4. See Nozzle Assembly, page 11

5. Make sure photocell boot is properly

seated in bracket

6. Clean photocell lens

7. Check electrical connections. See Wir-

ing Diagrams, page 13

8. Replace photocell

9. Replace ignition control assembly

POSSIBLE CAUSE

1. No power to heater

2. Thermostat setting is too low

3. Bad electrical connection between mo-

tor and ignition control assembly or ig-

nition control assembly and power cord

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

6. Bad electrical connection between igni-

tor 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 in-

stalled (not seeing the flame)

6. Dirty photocell lens

7. Bad electrical connection between pho-

tocell and ignition control assembly

8. Defective photocell

9. Defective ignition control assembly

FAULT CONDITION

Motor does not start five seconds after heater

is plugged in

Motor starts and runs but heater does not

ignite

Heater ignites but ignition control assembly

shuts heater off after a short period of time

WARNING: High voltage!

TROUBLESHOOTING

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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 7 or 8.

2. Lift upper shell off.

3. Remove fan guard.

SERVICE PROCEDURES

WARNING: To avoid risk of burn and electrical

shock, never attempt to service heater while it is

plugged in, operating, or hot.

Screw

Upper Shell

Fan Guard

Figure 7 - Upper Shell Removal

(40/55T/70T Models Only)

Screw

Upper Shell

Fan Guard

Figure 8 - Upper Shell Removal

(115T/165T Models Only)

FAN

IMPORTANT:

Remove fan from motor shaft before removing

motor from heater. The weight of the motor resting on the fan could

damage the fan pitch (see Figure 9).

1. Remove upper shell (see Figure 7 or 8).

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 10).

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.

Figure 9 - Fan, Motor Shaft,

and Setscrew Location

Flush

Fan

Setscrew

Motor Shaft

Motor

Figure 10 - Fan Cross Section

Setscrew

Motor Shaft

Fan

AIR OUTPUT, AIR INTAKE AND LINT FILTERS

1. Remove upper shell (see Figure 7 or 8).

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

Figure 11 or 12.

3. Remove filter end cover.

4. Replace air output and lint filters.

5. Wash or replace air intake filter (see Preventative Maintenance

Schedule, page 6).

6. Replace filter end cover.

7. Replace fan guard and upper shell.

IMPORTANT:

Do not oil filters.

Air Output

Filter

Lint Filter

Figure 11 - Air Output, Air Intake, and Lint Filters, 40/55T/70T Models

Figure 12 - Air Output, Air Intake, and Lint Filters, 115T/165T Models

Filter End Cover

Fan Guard

Air Output

Filter

Lint Filter

Air Intake

Filter

Filter End

Cover

Fan Guard

Air Intake Filter

SERVICE PROCEDURES

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PUMP PRESSURE ADJUSTMENT

1. Remove pressure gauge plug from filter end cover (see Figure 13).

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 specifica-

tions correct pressure for each model (see Figure 14).

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

end cover.

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 15 or 16).

4. Carefully pry bushing, fuel filter, and lower fuel line (115T/

165T models only) out of fuel tank (see Figure 16).

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

6. Attach upper fuel line to fuel filter neck.

7. Replace side cover.

SERVICE PROCEDURES

Continued

Relief

Valve

Pressure

Gauge

Plug

Figure 13 - Pressure Gauge Plug Removal

(40/55T/70T Models Shown)

Pump

Model Pressure

40 3.0 PSI

55T 3.4 PSI

70 T 4.7 PSI

115T 5.3 PSI

165T 5.6 PSI

Pressure

Gauge

Figure 14 - Adjusting Pump Pressure (40/55T/70T Models Shown)

Fuel Filter, Bushing,

and Lower Fuel Line

Upper Fuel Line

Side Cover

Fuel Filter

Side Cover

Figure 15 - Fuel Filter Removal, 40/55T/70T Models

Figure 16 - Fuel Filter Removal, 115T/165T Models

Upper Fuel

Line

SERVICE PROCEDURES

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Figure 21 - Removing Air and Fuel Line Hoses (165T Model Only)

Fuel Line

Hose

Combustion

Chamber

Nozzle/

Adapter

Assembly

Air Line

Hose

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 18). Torque

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 17).

12. Replace side cover (see Figures 15 and 16, page 9).

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 11.

14. Replace photocell in photocell bracket. Route wires as

shown in Figure 19, 20, or 21.

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

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

page 8).

CAUTION: Do not bend or strike ignitor element.

Handle with care.

Figure 19 - Removing Air and

Fuel Line Hoses, (40/55T/70T

Models Only)

Fuel Line

Hose

Combustion

Chamber

Nozzle/

Adapter

Assembly

Air Line

Hose

Photocell

Bracket

Burner

Strap

Figure 20 - Removing Air and

Fuel Line Hoses, (115T Model

Only)

Photocell

Bracket

Burner

Strap

IGNITOR

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

page 8).

2. Remove fan (see page 8).

3. Remove 4 side cover screws with a 5/16" nut driver. Remove

side cover (see Figures 15 and 16).

4. Disconnect ignitor wires (yellow) from ignition control as-

sembly (see Figure 17). 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 17).

6. Remove combustion chamber. Stand combustion chamber on

end with nozzle adapter bracket on top (see Figure 18).

7. Remove ignitor screw with a 1/4" nut driver. Carefully remove

ignitor from nozzle adapter bracket.

Figure 17 - Disconnecting Ignitor Wires from Ignition Control

Assembly

Combustion

Chamber

Photocell

Bracket

Photocell

Assembly

Air Line Hose

Fuel Line Hose

Ignitor Wire

Ignitor

Nozzle Adapter

Bracket

Ignition

Control

Assembly

Side Cover

(Yellow)

Photocell Bracket

Ignitor

Ignitor Screw/Washer

Assembly

Nozzle Adapter

Bracket

Ignitor Element

Combustion

Chamber

Nozzle Adapter

Bracket Opening

Figure 18 - Ignitor Replacement

SERVICE PROCEDURES

Continued

Combustion

Chamber

Burner

Strap

Photocell

Bracket

Fuel Line

Hose

Air Line

Hose

Nozzle/

Adapter

Assembly

SERVICE PROCEDURES

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SERVICE PROCEDURES

Continued

NOZZLE ASSEMBLY

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

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

3. Remove fuel and air line hoses from nozzle assembly (see Fig-

ure 19, 20, or 21, page 10).

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

remove (see Figure 22).

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 23.

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 (40-45 inch-pounds).

See Figure 23.

10. Attach nozzle assembly to burner strap (see Figure 22).

11. Attach fuel and airline hoses to nozzle adapter assembly. See

Fuel and Air Line Replacement and Proper Routing.

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

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

page 8).

Nozzle

Assembly

Burner Strap

Air Line

Fitting

Fuel Line

Fitting

Nozzle

Sleeve

Nozzle Face

Figure 23 - Nozzle and Nozzle Adapter, All Models

Nozzle Adapter

Figure 22 - Removing Nozzle Assembly, All Models

FUEL AND AIR LINE REPLACEMENT AND

PROPER ROUTING

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

2. Remove side cover screws using 5/16" nut driver (see Figure 15

or 16, page 9).

3. Remove side cover.

4. Inspect fuel and air line hoses for cracks and/or holes. If fuel

line hose is damaged, disconnect from nozzle adapter (see Fig-

ure 19, 20, or 21, page 10) and from fuel filter (see Fuel Filter,

page 9). If air line hose is damaged, disconnect from nozzle

adapter (see Figure 19, 20, or 21, page 10) and from barb fitting

on pump end cover (see Figure 24).

5. Install new air and/or fuel line. Attach one end of air line hose to

barb fitting on pump end cover (see Figure 24) and the other

end to nozzle adapter (see Figure 19, 20, or 21, page 10). Attach

one end of fuel line hose to fuel filter (see Fuel Filter, page 9)

and the other end to nozzle adapter (see Figure 19, 20, or 21,

page 10).

Note:

Route hoses as shown in Figure 19, 20, or 21, page 10,

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 8).

Barb Fitting

Air Hose

Pump End Cover

Barb

Fitting

115T/165T

Models

40/55T/70T

Models

Figure 24 - Air Hose to Barb Fitting

SERVICE PROCEDURES

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IGNITION CONTROL ASSEMBLY

WARNING: High Voltage!

Figure 29 - Replacing Fuse

Fuse

Cover

Fuse

Clips

1. Unplug heater.

2. Remove side cover screws (4) using 5/16" nut-driver to ex-

pose ignition control assembly (see Figure 15 or 16, page 9).

3. Remove fuse cover (see Figure 29).

4. Remove fuse from fuse clips (see Figure 29).

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 29).

7. Replace side cover (see Figure 15 or 16, page 9).

SERVICE PROCEDURES

Continued

PUMP ROTOR

(Procedure if Rotor is Binding)

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

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

Figure 25 or 26).

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" (.076-.101 mm) if

needed (see Figure 27).

Note:

Rotate Rotor one full turn to insure 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 8).

12. Adjust pump pressure (see Pump Pressure Adjustment, page 9).

Note:

If rotor is still binding, proceed as follows.

13. Perform steps 1 thru 6.

Figure 26 - Rotor Location, 115T/165T Models

Figure 25 - Rotor Location, 40/55T/70T Models

14. Place fine grade sandpaper (600 grit) on flat surface. Sand rotor

lightly in “figure 8” motion four times (see Figure 28).

15. Reinstall insert and rotor.

16. Perform steps 10 thru 12.

R

OTOR-Domestic

PFA/P 056B

Rotor

Air Output

Filter

Insert

Fan Guard

Filter End Cover

Air Intake Filter

Blade

Pump Plate

T

OR-Domestic PFA/P 059A

Insert

Rotor

Air Output

Filter

Blade

Filter End Cover

Air Intake Filter

Pump Plate

Fan

Guard

Gap Adjusting Screw

Rotor

Blade

.003"/.004"

(.076-.101 mm)

Gap Measured

With Feeler

Gauge

Gap Adjusting Screw

Figure 27 - Gap Adjusting Screw Locations

Sandpaper

Figure 28 - Sanding Rotor

SERVICE PROCEDURES

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Power Plug

120V/60Hz

Blue

White

Photocell

Ignition Control Assembly

Green

Red

Black

Yellow

Motor

Ignitor

Thermostat

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignitor

Motor

Figure 31 - Wiring Diagram for 55T/70T/115T/165T Thermostat Models

WIRING DIAGRAMS

Power Plug

120V/60Hz

Blue

White

Photocell

Green

Red

Black

Yellow

Motor

Ignitor

Ignition Control Assembly

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignitor

Motor

Figure 30 - Wiring Diagram for 40 Models

WIRING DIAGRAMS

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Model Size 40 55T 70T 115T 165T

Output Rating (Btu/Hr) 40,000 55,000 70,000 115,000 165,000

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

Fuel Consumption

(Gal. Per Hr/Liters Per Hr) .3/1.14 .44/1.67 .52/1.97 .85/3.00 1.2/4.54

Pump Pressure (psi) 3.0 3.4 4.7 5.3 5.6

Electric Requirements 120 V/60 HZ (Same All Models)

Amperage (Normal Run) 2.0 2.0 2.8 3.6 3.6

Motor RPM 1725 1725 3440 3440 3440

Hot Air Output (CFM) 170 180 360 490 575

Shipping Weight 32 35 35 53 63

(Approximate Pounds)

Heater Weight without Fuel 28 30 30 45 53

(Approximate Pounds)

* 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.

SPECIFICATIONS

105536

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ACCESSORIES

Heater accessories and parts are available at your local dealer.

Should your dealer not stock or is unable to order a particular

accessory or part, please contact DESA Industries for more infor-

mation.

DESA Industries of Canada, Inc.

2220 Argentia Road

Unit #4

Mississauga, Ontario

L5N 2K7

Parts Department

1-905-826-8010

HEAVY DUTY WHEELS AND

HANDLE KIT - HA1202

For heavy duty applications. Makes your heater even more portable

and convenient. Fits 40/55T/70T models.

THERMOSTAT KIT - HA1210

For 40 model. Keeps your building at the temperature you select day

and night. Helps economize on fuel.

AIR GAUGE KIT - HA1180

For all models. Special tool to check pump pressure.

IGNITION CONTROL ASSEMBLY/

PHOTOCELL TESTER - HA1170

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

ACCESSORIES

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1

2

3

4

38

5

6

7

8

9

10

11

12

13

14

15

16

9-2

9-1

9-3

9-4

9-5

17

18

19

20

21

22

23

24

25

26

27

28

29

30

34

35

36

32

33

31

9-6

37

ILLUSTRATED

PARTS

BREAKDOWN

RC40

Motor and Pump

Assembly

12-11

12-18

12-17

12-16

12-15

12-14

12-13

12-12

12-10

12-1

12-3

12-4

12-5

12-6

12-7

12-8

12-9

12-2

ILLUSTRATED PARTS BREAKDOWN

RC40

105536

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For more information, visit www.desatech.com

PARTS LIST

RC40

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 descrip-

tion 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 079007-31 Screw, #10-16 x 1" 2

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 ∆ Burner Head Assembly

9-1 HA3006 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 M10908-75 Screw, Hex Head, Tapping 1

9-6 103347-01 Belleville Washer 1

10 M11084-26 Screw, #10-16 x 3/8" 2

11 103684-01 Fan 1

12 ∆ Motor and Pump Assembly

12-1 102001-01 Motor 1

12-2 079975-02 Pump Body 1

12-3 M22009** Insert 1

12-4 M22456-1** Rotor 1

12-5 M29608 Pump End Cover 1

12-6 M29632 ⊕ Lint Filter 1

12-7 M29633 ⊕ Intake Filter 1

12-8 M29609 Filter End Cover 1

12-9 M12461-31 Screw, #10-32 x 1" 3

12-10 M27694 ∞ Adjusting Screw 1

12-11 M10993-1 ∞ Pressure Relief Spring 1

12-12 M22997 ∞ Plug 1

12-13 M8940 ∞ Steel Ball, 1/4" Diameter 1

12-14 M29612-01 ⊕ Output Filter 1

12-15 M12461-31 Screw, #10-32 x 1" 6

12-16 103676-01 Nylon Elbow, 90° 1

12-17 M8643** Blade 4

KEY PART

NO. NUMBER DESCRIPTION QTY.

∆ 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)

12-18 FHPF3-5C Screw 2

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" 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 097211-02 Screw, #8-18 x 1/2" 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 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 108088-01 Fuel Tank 1

36 M51108-01 Shell Heat-Shield 1

37 100647-01 Screw, #10-16 x 1/2” 4

38 079532-01 Guard, Nose Cone 1

PARTS AVAILABLE - NOT SHOWN

103814-01 Wire Tie 1

105550-01 Decal, Warning/Maintenance 1

105550-02 Decal, Warning/Maintenance 1

103997-21 Decal, Model Data (RC40) 1

097204-19 Tradename Decal (RC40) 2

PARTS LIST

RC40

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For more information, visit www.desatech.com

Motor and Pump

Assembly

12-11

12-18

12-17

12-16

12-15

12-14

12-13

12-12

12-10

12-1

12-2

12-3

12-4

12-5

12-6

12-7

12-8

12-9

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

34

35

36

32

33

31

39

38

37

9-2

9-1

9-3

9-4

9-5

9-6

41

40

ILLUSTRATED

PARTS

BREAKDOWN

RC55T, RC70T

ILLUSTRATED PARTS BREAKDOWN

RC55T, RC70T

105536

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For more information, visit www.desatech.com

PARTS LIST

RC55T, RC70T

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 descrip-

tion 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 079007-31 Screw, #10-16 x 1" 2

5 098512-50 Combustion Chamber (55T) 1

098512-51 Combustion Chamber (70T) 1

6 M10908-2 Screw, #6-32 x 3/8" 2

7 103154-03 Photocell Bracket 1

8 M16656-24 Photocell Assembly 1

9 ∆ Burner Head Assembly

9-1 HA3024 Nozzle Assembly (55T) 1

HA3026 Nozzle Assembly (70T) 1

9-2 102548-03 Ignitor Kit 1

9-3 104056-01 Nozzle Adapter 1

9-4 102336-02 Nozzle Adapter Bracket (55T) 1

102336-01 Nozzle Adapter Bracket (70T) 1

9-5 M10908-75 Screw, Hex Head, Tapping 1

9-6 103347-01 Belleville Washer 1

10 M11084-26 Screw, #10-16 x 3/8" 2

11 103684-01 Fan (55T) 1

M29678 Fan (70T) 1

12 ∆ Motor and Pump Assembly

12-1 102001-01 Motor (55T) 1

102001-20 Motor (70T) 1

12-2 079975-03 Pump Body (55T) 1

079975-02 Pump Body (70T) 1

12-3 M22009**, *** Insert 1

12-4 M22456-2** Rotor (55T) 1

M22456-1*** Rotor (70T) 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 M12461-32 Screw, #10-32 x 1

1

/8" (55T) 6

M12461-31 Screw, #10-32 x 1" (70T) 6

12-16 103676-01 Nylon Elbow, 90° 1

12-17 M8643-2** Blade (55T) 4

M8643*** Blade (70T) 4

KEY PART

NO. NUMBER DESCRIPTION QTY.

∆ Not available as an assembly ⊕ Included in Filter Kit (Part No. HA3014)

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

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

12-18 FHPF3-6C Screw, #10-32 x 3/4" (55T) 2

FHPF3-5C Screw, #10-32 x 5/8" (70T) 2

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" 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 097211-02 Screw, #8-18 x 1/2" 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 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 108088-03 Fuel Tank 1

36 M51108-01 Shell Heat-Shield 1

37 097657-03 Thermostat 1

38 M10908-1 Screw, #6-32 x 1/4" 2

39 104905-01 Thermostat Knob 1

40 100647-01 Screw, #10-16 x 1/2" 4

41 079532-01 Guard, Nose Cone 1

PARTS AVAILABLE - NOT SHOWN

097204-18 Tradename Decal (RC55T) 2

097204-14 Tradename Decal (RC70T) 2

100621-09 Thermostat Decal 1

103814-01

Wire Tie

1

M9900-170 Wire Assembly 1

105550-01 Decal, Warning/Maintenance 1

105550-02 Decal, Warning/Maintenance 1

103997-22 Decal, Model Data (RC55T) 1

103997-23 Decal, Model Data (RC70T) 1

PARTS LIST

RC55T, RC70T

105536

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For more information, visit www.desatech.com

1

2

3

23

19

9

10

16

11

12

15

25

26

27

24

28

29

20

22

21

30

31

17

14

33

34

35

36

32

26

13

18

5

4

6

7

8

7-2

7-1

7-5

7-4

7-3

39

38

37

41

45

44

46

42

43

40

42

7-6

ILLUSTRATED

PARTS

BREAKDOWN

RC115T, RC165T

Motor and Pump

Assembly

10-11

10-17

10-16

10-15

10-13

10-14

10-13

10-12

10-10

10-1

10-2

10-4

10-5

10-6

10-7

10-8

10-9

10-3

ILLUSTRATED PARTS BREAKDOWN

RC115T, RC165T

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