Desa Tech CP070BK, CP155CK Owner's Manual
ARL LOGO
G 004
®
TRADESMAN K70 & KI55
KEROSENE
PORTABLE FORCED
AIR HEATERS
(WITH BUILT-IN THERMOSTAT)
OWNER’S MANUAL
Models: CP070BK and CP155CK
Heater Size: 70,000 and 155,000 Btu/Hr
H.S.I. Series
IMPORTANT: Read and understand this manual before assembling, starting, or servicing
heater. Improper use of heater can cause serious injury. Keep this manual for future reference.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
PRODUCT IDENTIFICATION ..................................................... 3
UNPACKING............................................................................... 3
THEORY OF OPERATION ......................................................... 4
FUELS......................................................................................... 4
VENTILATION............................................................................. 4
ASSEMBLY................................................................................. 5
OPERATION ............................................................................... 5
OPERATION WITH PORTABLE GENERATOR.......................... 6
PREVENTATIVE MAINTENANCE SCHEDULE ......................... 6
STORING, TRANSPORTING, OR SHIPPING............................ 6
TROUBLESHOOTING ................................................................ 7
SERVICE PROCEDURES .......................................................... 8
WIRING DIAGRAM ................................................................... 14
SPECIFICATIONS .................................................................... 14
TECHNICAL SERVICE ............................................................. 15
REPLACEMENT PARTS .......................................................... 15
ACCESSORIES ........................................................................ 15
ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 16
WARRANTY AND GENERAL INFORMATION ......................... 22
SAFETY INFORMATION
2
SAFETY INFORMATION
WARNINGS
WARNING: This product contains and/or generates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause
serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
DANGER: Carbon monoxide poisoning may lead
to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoning resemble the flu, with headaches, dizziness, and/or nausea. If you have these signs, the heater may not be working properly.
Get fresh air at once! Have heater serviced. Some people are more
affected by carbon monoxide than others. These include pregnant
women, persons with heart or lung disease or anemia, those under
the influence of alcohol, and those at high altitudes.
Make certain you read and understand all warnings. Keep this
manual for reference. It is your guide to safe and proper operation
of this heater.
• Use only kerosene, #1#2 diesel/fuel oil, JET A or JP-8 fuels to
avoid risk of fire or explosion. Never use gasoline, naphtha,
paint thinners, alcohol, or other highly flammable fuels.
• Fueling
a)Personnel involved with fueling shall be qualified and thor-
oughly familiar with the manufacturer's instructions and applicable regulations regarding the safe fueling of heating units.
b)Only the type of fuel specified on the heater's data plate shall
be used.
c) All flame, including the pilot light, if any, shall be extin-
guished and the heater allowed to cool, prior to fueling.
d)During fueling, all fuel lines and fuel-line connections shall
be inspected for leaks. Any leaks shall be repaired prior to
returning the heater to service.
e)At no time shall more than one day's supply of heater fuel
be stored inside a building in the vicinity of the heater. Bulk
fuel storage shall be outside the structure.
f) All fuel storage shall be located a minimum of 762cm (25
feet) from heaters, torches, welding equipment, and similar
sources of ignition (exception: the fuel reservoir integral with
the heater unit).
g)Whenever possible, fuel storage shall be confined to areas
where floor penetrations do not permit fuel to drip onto or
be ignited by a fire at lower elevation.
h)Fuel storage shall be in accordance with the authority hav-
ing jurisdiction.
• Use only the electrical voltage and frequency specified on
model plate.
• Heater must be grounded. Use only a properly grounded threewire extension cord. Plug into grounded outlet only.
• Use only in areas free of flammable vapors or high dust content.
• Minimum clearance from any combustible materials: 8 feet (244
cm) from hot air outlet; 4 feet (122 cm) from top; and 4 feet
(122 cm) from sides and inlet.
• Locate heater on a stable and level surface while hot or operating or a fire may occur.
• Use only in well-vented areas. Before using heater, provide at
least a 2800 square cm (three-square-foot) opening of fresh,
outside air for each 30 kw (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 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 attach duct work to front or rear of heater.
• Never attach heater to external fuel tank.
• Heaters used in the vicinity of tarpaulins, canvas, or similar
enclosure materials shall be located a safe distance from such
materials. The recommended minimum safe distance is
304.8cm (10 feet). It is further recommended that these enclosure materials be of a fire retardant nature. These enclosure
materials shall be securely fastened to prevent them from igniting or from upsetting the heater due to wind action.
• Unplug heater when not in use.
• Never block air inlet (rear) or air outlet (front) of heater.
•
Warning to New York City Residents
For Use Only At Construction Sites in accordance with ap-
plicable NYC codes under NYCFD certificate of approval
#4803, #4899, #4908, #4909, or #4934.
111178-01A
PRODUCT IDENTIFICATION
UNPACKING
3
3
PRODUCT IDENTIFICATION
Hot Air
Outlet
Upper
Shell
Lower
Shell
Fuel
Tank
Side Cover
Ignition Control
Assembly (On Inside
of Side Cover)
Figure 1 - 70,000 Btu Unit
Hot Air Outlet
Handle
Power
Cord
Upper Shell
Thermostat Knob
(Thermostat Models Only)
Fan Guard
Air Filter
End
Cover
Fuel Cap
Fan
Guard
UNPACKING
1. Remove all packing items applied to heater for shipment.
2. Remove all items from carton.
3. Check items for shipping damage. If heater is damaged,
promptly inform dealer where you bought heater.
Lower
Shell
Fuel
Cap
Side Cover
Ignition Control
Assembly (On Inside
of Side Cover)
Figure 2 - 155,000 Btu Unit
Power Cord
Thermostat
Knob
(Thermostat
Models Only)
Fuel Tank
111178-01A
THEORY OF OPERATION
4
FUELS
VENTILATION
THEORY OF OPERATION
The Fuel System: The air pump forces air through the air line. The
air is then pushed through the nozzle. This air causes fuel to lift from
the tank. A fine mist of fuel is sprayed into the combustion chamber.
The Air System: The motor turns the fan. The fan pushes air into
and around the combustion chamber. This air is heated and provides
a stream of clean, hot air.
Clean
Heated
Air Out
Fuel
Tank
Combustion Chamber
Nozzle
Air For Fuel System
Ignitor
Fuel
Filter
Air For Combustion
And Heating
Motor
Fan
Air Line
To Burner
The Ignition System:
The ignition control assembly provides
power to the ignitor. This ignites the fuel/air mixture in the combustion chamber.
The Flame-Out Control System: This system causes the heater to
shut down if the flame goes out.
Air Pump
Air Intake
Filter
Cool
Air
In
Air
Output
Filter
Ignition Control
Assembly
Fuel
Figure 3 - Cross Section Operational View
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
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:
(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 the heater. Foreign matter may also require
heater's fuel system to be frequently cleaned.
Use a KEROSENE ONLY (blue) or DIESEL ONLY
VENTILATION
Follow the minimum fresh, outside air ventilation
requirements. If proper fresh, outside air ventilation
is not provided, carbon monoxide poisoning can
occur. Provide proper fresh, outside air ventilation
before running heater.
Provide at least a three-square-foot opening of fresh, outside air for
each 100,000 Btu/Hr rating. Provide extra fresh air if more heaters
are being used.
Example:
• a two-car garage door (16 feet wide opening) raised 3.5 inches
• a single-car garage door (9 feet wide opening) raised 6.5 inches
• two 30 inch wide windows raised 11.5 inches
A 155,000 Btu/Hr heater requires one of the following:
111178-01A
ASSEMBLY
OPERATION
5
5
ASSEMBLY
(155,000 BTU UNITS ONLY)
This model is furnished with wheels and handles. Wheels, handles,
and the mounting hardware are found in the shipping carton.
TOOLS NEEDED
• Medium Phillips Screwdriver
• 3/8" Open or Adjustable Wrench
• Hammer
1. Slide axle through wheel support frame. Install wheels on axle.
IMPORTANT:
of wheels toward wheel support frame (see Figure 4).
2. Place cap nuts on axle ends. Gently tap with hammer to secure.
3. Place heater on wheel support frame. Make sure air inlet end
(rear) of heater is over wheels. Line up holes on fuel tank
flange with holes on wheel support frame.
4. Place front handle (and rear handle if provided) on top of
fuel tank flange. Insert screws through handle(s), fuel tank
flange, and wheel support frame. Attach nut finger tight after
each screw is inserted.
5. After all screws are inserted, tighten nuts firmly.
Front Handle
(If Provided)
Hot Air
Outlet
Fuel Tank
Flange
When installing wheels, point extended hub
Handle
Screw
Air
Inlet
OPERATION
IMPORTANT: Review and understand the warnings
in the
needed to safely operate this heater. Follow all local
ordinances and codes when using this heater.
TO START HEATER
1. Follow all ventilation and safety information.
2. Locate heater to provide maximum circulation of the heated
3. Fill fuel tank with kerosene, #1#2 diesel/fuel oil, JET A or
4. Attach fuel cap.
5. For thermostat models, turn thermostat knob clockwise to the
6. Plug heater’s power cord into approved, grounded, three-wire
7. Plug extension cord into standard 120 volt/60 hertz, 3-prong
8. For thermostat models, adjust thermostat knob to the desired
Safety Information
air. Follow all location requirements noted in Safety Information, page 2.
JP-8 fuel.
high position.
extension cord. Extension cord must be at least six feet (1.8
meters) long.
Extension Cord Size Requirement
6 to 10 feet (1.8 to 3 meters) long, use 18 AWG (0.75 mm2)
rated cord
11 to 100 feet (3.3 to 30.5 meters) long, use 16 AWG (1.0 mm2)
rated cord
101 to 200 feet (30.8 to 61 meters) long, use 14 AWG (1.5 mm2)
rated cord
grounded outlet.
then heater will start.
setting.
This thermostat is a general-heating control. It is not intended
for precise temperature control. Adjust thermostat until heater
cycles at the desired setting.
Note:
Note:
A cold heater may affect the thermostat setting.
section, page 2. They are
Ignitor will preheat for five seconds,
Wheel
Support
Frame
Wheel
Cap Nut
Figure 4 - Wheel and Handle Assembly
111178-01A
Nut
Axle
Extended
Hub
TO STOP HEATER
Unplug extension cord from outlet.
TO RESTART HEATER
1. Unplug extension cord from outlet and wait 10 seconds. (W ait
two minutes if heater has been running.)
2. Repeat steps under To Start Heater.
OPERATION WITH PORTABLE GENERATOR
6
PREVENTATIVE MAINTENANCE SCHEDULE
STORING, TRANSPORTING, OR SHIPPING
OPERATION WITH PORTABLE
GENERATOR
WARNING: Before operating heater or any appliance from a portable generator, verify that generator
has been properly connected to earth ground. Improper grounding or failure to ground generator can
result in electrocution if a ground fault occurs. Refer
to owner’s manual supplied by generator manufacturer for proper grounding procedures.
The operating voltage range of the heater is 108 to 132 Volts (120
Volts +/- 10%). Prior to plugging heater into generator the output
voltage should be verified (if generator is equipped with the automatic idle feature, the output voltage should be measured with the
generator running at full speed). If the voltage does not measure in
this range the heater should not be plugged into the generator.
Refer to Operation, page 5, for starting, stopping, and resetting
heater procedures.
Alternator
Ground Lug
Copper or Brass
Grounding Point
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 excess
debris from clogging filters during future use.
4. Replace fuel cap or drain plug. Properly dispose of old and
dirty fuel. Check with local automotive service stations that
recycle oil.
5. If storing, store heater in dry place. Make sure storage place is
free of dust and corrosive fumes.
IMPORTANT:
during next heating season. Using old fuel could damage heater.
Do not store kerosene over summer months for use
Ground Wire (#10 AWG Stranded-Copper)
Figure 5 - Typical Generator Grounding Method (Generator
construction may vary from that shown)
PREVENTATIVE MAINTENANCE SCHEDULE
WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock
can occur.
Item
Fuel tank
Air output and lint filters
Air intake filter
Fuel filter
Ignitor
Fan blades
How Often
Flush every 150-200 hours of operation or as needed
Replace every 500 hours of operation or once a year
Wash and dry with soap and water every 500 hours
of operation or as needed
Clean twice a heating season or as needed
No maintenance required
Clean every season or as needed
How To
See Storing, Transporting, or Shipping, above
See Air Output, Air Intake, and Lint Filters, page 8
See Air Output, Air Intake, and Lint Filters, page 8
See Fuel Filter, page 9
See Fan, page 8
Motor
Not required/permanently lubricated
111178-01A
TROUBLESHOOTING
7
7
TROUBLESHOOTING
OBSERVED FAULT
Motor does not start five seconds after heater
is plugged in
Motor starts and runs but heater does not
ignite
WARNING: Never service heater while it is plugged in, operating,
or hot. Severe burns and electrical shock can occur.
POSSIBLE CAUSE
1. No power to heater
2. Thermostat setting too low
WARNING: High voltage!
3. Bad electrical connection between motor and ignition control assembly or ignition control assembly and power cord
4. Blown fuse on ignition control assembly
5. Binding pump rotor
6. Defective ignition control assembly
7. Defective motor
1. No fuel in tank
2. Pump pressure incorrect
3. Dirty fuel filter
4. Obstruction in nozzle assembly
5. Water in fuel tank
REMEDY
1. Check circuit breaker in electrical panel.
2. Turn thermostat knob to a higher setting
3. Check all electrical connections. See
Wiring Diagram, page 14
4. See Ignition Control Assembly, page 13
5. If fan does not turn freely, see Pump
Rotor, page 12
6. Replace ignition control assembly
7. 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 Ship-
ping, page 6
Heater ignites but ignition control assembly
shuts heater off after a short period of time
WARNING: High voltage!
6. Bad electrical connection between ignitor and ignition control assembly
7. Defective ignitor
8. Defective ignition control assembly
1. Pump pressure incorrect
2. Dirty air intake, air output, and/or lint
filter
3. Dirty fuel filter
4. Obstruction in nozzle assembly
5. Photocell assembly not properly installed
(not seeing the flame)
WARNING: High voltage!
6. Dirty photocell lens
7. Bad electrical connection between photocell and ignition control assembly
8. Defective photocell
9. Defective ignition control assembly
6. Check electrical connections. See Wir-
ing Diagram, page 14
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 Diagram, page 14
8. Replace photocell
9. Replace ignition control assembly
111178-01A
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