Desa BC40, BC165CT, RC115CT, BC55T, BC70T User Manual

...

CANADIAN PORTABLE FORCED AIR HEATERS

OWNER’S MANUAL

MODELS: BC40, RC40, BC55T, RC55T, BC70T, RC70T, BC115CT,

RC115CT, BC165CT AND RC165CT

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 ........................................................... 2

Product Identiﬁcation ...........................................

Assembly ............................................................. 4

Theory of Operation ............................................ 5

Fuels .................................................................... 5

Ventilation ........................................................... 6

Operation ............................................................ 6

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

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

Troubleshooting ...................................................

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

Wiring Diagrams ............................................... 15

Illustrated Parts Breakdown and Parts List ....... 16

Speciﬁcations ....................................................

Accessories ....................................................... 25

Warranty and Repair Service ............................ 28

SAFETY INFORMATION

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, op erate, 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!

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.

1. 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.

2. Use only with the electrical voltage and fre quency speciﬁed on model plate.

3. Heater must be grounded. Use only a properly grounded three-wire extension cord. Plug into grounded outlet only.

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

5. 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.

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

7. Use only in well ventilated areas. Provide venti lation of at least three square feet (2,800 square cm) for each 100,000 Btu/Hr of rating.

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

9. Never start heater when combustion chamber is hot or if fuel has accumulated in combus tion chamber.

10. When used with a thermostat, heater may start at anytime.

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

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

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

14. Never use heater where gasoline, paint thin ner, or other highly ﬂammable vapors are present.

15. Never use heater in living or sleeping areas.

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

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

18. Never block air inlet at motor end (rear) of heater.

19. Never attach duct work to front of heater.

20. Never attach heater to external fuel tank.

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 dam age is found, promptly inform dealer where heater was purchased.

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Hot Air Outlet

PRODUCT IDENTIFICATION

Nose Cone Guard

Upper Shell

Handle

Lower Shell

Fuel Tank

Side Cover

Ignition Control Assembly (assembly on inside of side cover)

Hot Air Outlet

Lower Shell

Fuel Tank

Side Cover

Ignition Control Assembly (assembly on inside of side cover)

Figure 2 - 55T/70T Models

Hot Air Outlet

Lower Shell

Figure 1 - 40 Model

Nose Cone Guard

Upper Shell

Fan Guard

Power Cord

Handle

Fan Guard

Air Filter End Cover

Fuel Cap

Fan Guard

Thermostat Knob

Air Filter End Cover

Fuel Cap

Power Cord

Thermostat Knob

Fuel Cap

Side Cover

Ignition Control Assembly (assembly on inside of side cover)

Figure 3 - 115T/165T Models

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Power Cord

Fuel Tank

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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.

Nose Cone Guard

Screw Hot Air Outlet

Upper Shell Flange

(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 secure.

3. Place heater on wheel support frame assem bly. 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.

Front Handle

Hot Air Outlet

Rear Handle (If Equipped)

Screw

Figure 4 - Nose Cone Guard Assembly,

40/55T/70T Models Only

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Fuel Tank Flange

Wheel Support Frame

Wheel

Nut

Cap Nut

Figure 5 - Wheel and Handle Assembly,

115T/165T Models Only

Axle

Air Inlet

Extended Hub

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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 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.

Clean Heated Air Out

Fuel Tank

Combustion Chamber

Nozzle

Air For Fuel System

Figure 6 - Cross Section Operational View

Ignitor

Fuel Filter

FUELS

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

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

• noticeable odor

• additional fuel ﬁlter maintenance

• the need for nontoxic, anti-icer additives in very cold weather

Motor

Fan

Air Line To Burner

Air For Combustion And Heating

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. 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.

Air Pump

Air Intake Filter

Cool Air In

Air Output Filter

Ignition Control Assembly

Fuel

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VENTILATION

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

Example: 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)

OPERATION

IMPORTANT: Review and understand the warnings in the Safety Information section, page 2. They are needed to safely oper ate this heater. Follow all local ordinances and codes when using this heater.

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

7. For thermostat models 55T, 70T, 115T, and 165T, adjust thermostat knob to the desired setting. Not e: A cold heater may 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.

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

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 thermostat knob clockwise to the high position.

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

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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 un-

derside 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 dis pose 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.

PREVENTATIVE MAINTENANCE SCHEDULE

WARNING: To avoid risk of burn and electrical shock, never at-

tempt to service heater while it is plugged in, operating, or hot.

Item How Often How To

Fuel tank Flush every 150-200 hours See Storing, Transporting, or of operation or as needed Shipping

Air output and lint ﬁlters Replace every 500 hours of See Air Output, Air Intake, operation or once a year and Lint Filters, page 10

Air intake ﬁlter Wash and dry with soap and See Air Output, Air Intake, water every 500 hours of and Lint Filters, page 10 operation or replace as needed

Fuel ﬁlter Clean twice a heating season See Fuel Filter, page 11 or replace as needed

Ignitor None required

Fan blades Clean every season or See Fan, page 9 as needed

Motor Not required/permanently lubricated

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TROUBLESHOOTING

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

or hot. Severe burns and electrical shock can occur.

FAULT CONDITION

Motor does not start ﬁve seconds after heater is plugged in

Motor starts and runs but heater does not ignite

POSSIBLE CAUSE

1. No power to heater

2. Thermostat setting is too low

WARNING: High voltage!

3. Bad electrical connection be tween motor and ignition con trol assembly or ignition control assembly and power cord

4. Binding pump rotor

5. Defective ignition control as sembly

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

WARNING: High voltage!

6. Bad electrical connection between ignitor and ignition control assembly

7. Defective ignitor

8. Defective ignition control as sembly

REMEDY

1. Check circuit breaker in electrical panel

2. Turn thermostat knob to a higher setting

3. Check all electrical connec-

tions. See Wiring Diagrams page 15

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

5. Replace ignition control as sembly

6. Replace motor

1. Fill tank with kerosene

2. See Pump Pressure Adjust ment, page 10

3. See Fuel Filter, page 11

4. See Nozzle Assembly, page 12

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

Trans porti ng, or Shipping

page 7

Check electrical connections. See Wiring Diagrams , page 15

7. Replace ignitor, see page 11

8. Replace ignition control as sembly

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

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 be tween photocell and ignition control assembly

8. Defective photocell

9. Defective ignition control as sembly

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1. See Pump Pressure Adjust ment, page 10

2. See Air Output, Air Intake, and Lint Filters, page 10

3. See Fuel Filter, page 11

4. See Nozzle Assembly, page 12

5. Make sure photocell boot is properly seated in bracket

6. Clean photocell lens

7. Check electrical connections. See Wiring Diagrams, page 15

8. Replace photocell

9. Replace ignition control as sembly

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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 7 or 8.

2. Lift upper shell off.

3. Remove fan guard.

Screw

Upper Shell

Fan Guard

Figure 7 - Upper Shell Removal

(40/55T/70T 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).

Place setscrew on ﬂat of shaft. Tighten

7. setscrew ﬁrmly (40-50 inch-pounds/4.5-

5.6 n-m).

8. Replace fan guard and upper shell.

Fan

Setscrew

Screw

Figure 8 - Upper Shell Removal

(115T/165T Models Only)

Upper Shell

Fan Guard

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Motor Shaft

Figure 9 - Fan, Motor Shaft, and

Setscrew Location

Setscrew

Motor

Motor Shaft

Figure 10 - Fan Cross Section

Fan

Flush

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SERVICE PROCEDURES

Continued

AIR OUTPUT, AIR INTAKE AND LINT FILTERS

Remove upper shell (see Figure 7 or 8, page 9).

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 Preventa tive Maintenance Schedule, page 7).

6. Replace ﬁlter end cover.

7. Replace fan guard and upper shell.

IMPORTANT: Do not oil ﬁlters.

Air Intake Filter

Filter End Cover

Lint Filter

Air Output Filter

Figure 11 - Air Output, Air Intake, and

Lint Filters, 40/55T/70T Models

Air Intake Filter

Filter End Cover

Fan Guard

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 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 14).

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

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 5.1 PSI 165T 5.6 PSI

Figure 14 - Adjusting Pump Pressure

(40/55T/70T Models Shown)

Operation, page 6). Allow

Relief Valve

Pressure Gauge

Lint Filter

Air Output Filter

Figure 12 - Air Output, Air Intake, and

Lint Filters, 115T/165T Models

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SERVICE PROCEDURES

Continued

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 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.

Fuel Filter

Side Cover

IGNITOR

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

2. Remove fan (see page 9).

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 assembly (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 com bustion chamber on end with nozzle adapter bracket on top (see Figure 18).

Nozzle

Combustion Chamber

Air Line Hose

Fuel Line Hose

Photocell Bracket

Adapter Bracket

Ignitor

Ignitor Wire

(Yellow)

Upper Fuel Line

Figure 15 - Fuel Filter Removal,

40/55T/70T Models

Fuel Filter, Bushing, and Lower Fuel Line

Side Cover

Upper Fuel Line

Figure 16 - Fuel Filter Removal,

115T/165T Models

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Photocell Assembly

Side Cover

Figure 17 - Disconnecting Ignitor Wires

from Ignition Control Assembly

Ignitor Screw/ Washer Assembly

Ignitor Element

Photocell Bracket

Combustion Chamber

Figure 18 - Ignitor Replacement

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Ignition Control Assembly

Ignitor

Nozzle Adapter Bracket

Nozzle Adapter Bracket Opening

SERVICE PROCEDURES

Continued

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

CAUTION: Do not bend or strike ignitor element. Handle with care.

8. Carefully remove replacement ignitor from styrofoam packing.

9. Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter bracket with screw using a 1/4" nut driver (see Figure 18, page

11). 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, page 11).

12. Replace side cover (see Figures 15 and 16, page 11).

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 13.

14. Replace photocell in photocell bracket. Route wires as shown in Figure 19, 20, or 21.

15. Replace fan (see

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

Combustion Chamber

Burner Strap

Photocell Bracket

Air Line Hose

Figure 19 - Removing Air and Fuel Line

Hoses, (40/55T/70T Models Only)

Fan, page 9).

Upper

Nozzle/ Adapter Assembly

Fuel Line Hose

Combustion Chamber

Burner Strap

Photocell Bracket

Air Line Hose

Figure 20 - Removing Air and Fuel Line

Hoses, (115T Model Only)

Combustion Chamber

Burner Strap

Photocell Bracket

Air Line Hose

Figure 21 - Removing Air and Fuel Line

Hoses (165T Model Only)

Nozzle/ Adapter Assembly

Fuel Line Hose

NOZZLE ASSEMBLY

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

2. Remove fan (see

3. Remove fuel and air line hoses from nozzle assembly (see Figure 19, 20, or 21).

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.

Burner Strap

Fan, page 9).

Nozzle Assembly

Nozzle/ Adapter Assembly

Figure 22 - Removing Nozzle Assembly,

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All Models

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SERVICE PROCEDURES

Continued

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

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

Nozzle Face

Nozzle

Nozzle Adapter

Figure 23 - Nozzle and Nozzle Adapter,

Fan, page 9).

Upper

Nozzle Sleeve

Air Line Fitting

Fuel Line Fitting

All Models

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 15 or 16, page 11).

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 19, 20, or 21, page 12) and from fuel ﬁlter (see Fuel Filter page 11). If air line hose is damaged, discon nect from nozzle adapter (see Figure 19, 20, or 21, page 12) 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

12). Attach one end of fuel line hose to fuel ﬁlter (see Fuel Filter, page 11) and the other end to nozzle adapter (see Figure 19, 20, or 21, page 12).

Note: Route hoses as shown in Figure 19, 20,

or 21, page 12, according to model. Hoses are not to touch photocell bracket.

6. Replace side cover.

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

Pump End Cover

Upper

Barb Fitting

40/55T/70T

Models

Figure 24 - Air Hose to Barb Fitting

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Barb Fitting

Air Hose

115T/165T

Models

13111168-01A

SERVICE PROCEDURES

Continued

PUMP ROTOR

(Procedure if Rotor is Binding)

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

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" nutdriver.

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 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 thru 6.

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.

Upper

Blade

Pump Plate

Air Intake Filter

Insert

Rotor

Air Output Filter

Fan Guard

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

Insert

Rotor

Air Output Filter

Figure 26 - Rotor Location, 115T/165T

Models

Blade

Pump Plate

Air Intake Filter

Filter End Cover

Models

Gap Adjusting Screw

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

Filter End Cover

Fan Guard

Rotor

Blade

Figure 27 - Gap Adjusting Screw

Figure 28 - Sanding Rotor

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Gap Adjusting Screw

Locations

Sandpaper

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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

Power Plug 120V/60Hz

Blue

White

Photocell

Green

Red

Black

l low

Yel low

Motor

Ignitor

Ignition Control Assembly

Photocell

Ignitor

Motor Return

AC Neutral (L2)

120V (L1)

Ignitor

Motor

SERVICE PROCEDURES

Continued

IGNITION CONTROL ASSEMBLY

WARNING: High Voltage!

1. Unplug heater.

2. Remove side cover screws (4) using 5/16" nut-driver to expose ignition control assembly (see Figure 15 or 16, page 11).

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.

WIRING DIAGRAMS

6. Replace fuse cover (see Figure 29). Replace side cover (see Figure 15 or 16, page 11).

Fuse Clips

Fuse Cover

Fuse

Figure 29 - Replacing Fuse

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

Figure 30 - Wiring Diagram for 40 Models

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9-2

9-1

9-3

9-4

9-5

9-6

ILLUSTRATED PARTS BREAKDOWN

MODELS BC40 AND RC40

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+ 36 hidden pages