Desa Tech B70FT, B150CT Owner's Manual
PORTABLE
150 SIDE HANDLE
PFA/PV 005
FORCED
AIR HEATER
(WITH BUILT-IN THERMOSTAT)
OWNER’S MANUAL
50 SIDE
Heater Sizes: 70,000 and 150,000 BTU/Hr
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.
®
ARL LOGO
G 004
CONTENTS
WARNING ICON G 001
WARNING ICON G 001
SECTION PAGE
Safety Information.........................................................................2
Product Identification ....................................................................4
Unpacking .....................................................................................5
Assembly .......................................................................................5
Theory of Operation ......................................................................6
Fuels ..............................................................................................6
Ventilation .....................................................................................7
Operation .......................................................................................7
Storage........................................................................................... 8
Preventative Maintenance Schedule .............................................8
Troubleshooting.............................................................................9
Service Procedures ........................................................................ 10
Upper Shell Removal.............................................................. 10
Fan...........................................................................................10
Air Output, Air Intake, and Lint Filters.................................. 10
Pump Pressure Adjustment..................................................... 11
Fuel Filter................................................................................ 11
Spark Plug............................................................................... 12
Nozzle ..................................................................................... 12
Pump Rotor .............................................................................13
Specifications.................................................................................14
Wiring Diagram............................................................................. 14
Maintenance Kits...........................................................................15
Accessories ....................................................................................15
Warranty and Repair Service ........................................................ Back Cover
SAFETY
INFORMATION
2
WARNINGS
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.
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SAFETY
INFORMATION
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• Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never
use gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels.
• Fueling
a) Personnel involved with fueling shall be qualified and thoroughly familiar
with the manufacturer's instructions and applicable federal, state, and local
regulations regarding the safe fueling of heating units.
b) Only the type of fuel specified on the heater's data plate shall be used.
c) All flame, including the pilot light, if any , shall be extinguished and the heater
allowed to cool, prior to fueling.
d) During fueling, all fuel lines and fuel-line connections shall be inspected for
leaks. Any leaks shall be repaired prior to returning the heater to service.
e) At no time shall more than one day's supply of heater fuel be stored inside a
building in the vicinity of the heater. Bulk fuel storage shall be outside the
structure.
f) All fuel storage shall be located a minimum of 25 feet from heaters, torches,
welding equipment, and similar sources of ignition (exception: the fuel reser-
voir integral with the heater unit).
g) Whenever possible, fuel storage shall be confined to areas where floor penetra-
tions 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 federal, state, or local authority
having jurisdiction.
• Never use heater where gasoline, paint thinner, or other highly flammable vapors are present.
• Follow all local ordinances and codes when using heater.
• Heaters used in the vicinity of tarpaulins, canvas, or similar enclosure
materials shall be located a safe distance from such materials. The recommended minimum safe distance is 10 feet. 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.
• Use only in well vented areas. Before using heater, provide at least a three-
square-foot opening of fresh, outside air for each 100,000 BTU/Hr of rating.
This heater produces carbon monoxide, which is listed by the State of California as a reproductive toxin under Proposition 65.
• Use only in places free of flammable vapors or high dust content.
• Use only with the electrical voltage and frequency specified on model plate.
• Use only a three-prong, grounded extension cord.
• Minimum heater clearances from combustibles:
Outlet: 8 Ft. Sides: 4 Ft. Top: 4 Ft. Rear: 4 Ft.
• Locate heater on a stable and level surface while hot or running or a fire may occur.
• When moving or storing heater, keep heater in a level position or fuel spillage
may occur.
• Keep children and animals away from heater.
• Unplug heater when not in use.
• This heater is equipped with a thermostat. Heater may start at anytime.
• Never use heater in living or sleeping areas.
• Never block air inlet (rear) or air outlet (front) of heater.
• Never move, handle, refuel, or service a hot, operating, or plugged-in heater.
• Never attach duct work to front or rear of heater.
3
PRODUCT
70,000 BTU/Hr Model
IDENTIFICATION
Hot Air
Outlet
Lower
Shell
Fuel Tank
Side Cover
Flame Out Control
Reset Button
150,000 BTU/Hr Model
Hot Air
Outlet
Upper Shell
Fan Guard
Air Filter
End Cover
Fuel Cap
Power Cord
Upper Shell
Lower
Shell
Fuel Cap
Side Cover
Flame Out
Control Reset
Button
Fan Guard
Fuel Tank
Power Cord
Thermostat
Knob
4
Figure 1 - 70,000 and 150,000 BTU/Hr Models
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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.
ASSEMBLY
The 150,000 BTU/Hr 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:
wheel support frame (see Figure 2).
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 on top of fuel tank flange. Insert screws
through handles, 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.
When installing wheels, point extended hub of wheels toward
Front
Handle
Hot Air
Outlet
Fuel
Tank
Flange
Wheel
Support
Frame
Wheel
Cap Nut
Screw
Nut
Axle
Rear
Handle
Air
Inlet
Extended
Hub
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Figure 2 - Wheel and Handle Assembly
5
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