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

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CANADIAN PORTABLE FORCED AIR HEATERS
OWNER’S MANUAL
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 .......................
Save this manual for future reference.
For more information, visit www.desatech.com
Preventative Maintenance Schedule ................... 7
Troubleshooting ...................................................
Service Procedures ............................................. 9
3
Wiring Diagrams ............................................... 15
Illustrated Parts Breakdown and Parts List ....... 16
Specifications ....................................................
Accessories ....................................................... 25
Warranty and Repair Service ............................ 28
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8
24
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.
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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
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
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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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5111168-01A
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.
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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
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 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
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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
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3. Check all electrical connec-
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tions. See Wiring Diagrams page 15
4. If fan does not turn freely, see Pump Rotor, page 14
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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
6.
Check electrical connections. See Wiring Diagrams , page 15
7. Replace ignitor, see page 11
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8. Replace ignition control as sembly
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Heater ignites but ignition control assembly shuts heater off after a short period of time
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1. Pump pressure incorrect
2. Dirty air intake, air output, and/or lint filter
3. Dirty fuel filter
4. Obstruction in nozzle
5. Photocell assembly not properly installed (not seeing the flame)
6. Dirty photocell lens
WARNING: High voltage!
7. Bad electrical connection 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
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7. Check electrical connections. See Wiring Diagrams, page 15
8. Replace photocell
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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).
1.
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
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).
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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).
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 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)
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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
11
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
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
111168-01A
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
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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
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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
Blue
White
White
Photocell
Ignition Control Assembly
Green
Green
Red
Black
Black
Yellow
Yellow
Motor
Ignitor
Thermostat
Photocell
Photocell
Ignitor
Motor Return
AC Neutral (L2)
120V (L1)
Ignitor
Motor
Power Plug 120V/60Hz
Blue
Blue
White
White
Photocell
Green
Green
Red
Black
Ye
l low
Yel low
Motor
Ignitor
Ignition Control Assembly
Photocell
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).
7.
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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2
3
4
31
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
9-6
37
ILLUSTRATED PARTS BREAKDOWN
MODELS BC40 AND RC40
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