background image

6

THEORY CUTAWAY 125 EURO

THEORY OF

OPERATION

WARNING

!

FUELS

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.

Clean
Heated
Air Out

Cool
Air
In

Output
Air
Filter

Figure 3 - Cross Section Operational View

Spark
Plug

Burner
Head

Fan

Motor

Air Pump

Intake
Air Filter

Nozzle

Heat Exchanger

Outer Shell

Exhaust Gases
Outlet

Exhaust gases cross over
from combustion chamber
to heat exchanger

Fuel
Tank

Air line
To Burner

Electronic
Ignitor

Exhaust
Gases

Air For Fuel
System

Air For Combustion
And Heating

Fuel

The Fuel System:  

The air pump forces air through the air line. The air is then

pushed through the burner head 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.
Exhaust gases are ducted out of the heater through a vent pipe. The user must
supply the vent pipe.

The Ignition System: 

 The electronic ignitor sends voltage to the spark plug.

The spark plug ignites the fuel and air mixture.

The Flame-Out Control System: 

 This system causes the heater to shut down

if the flame goes out.

Do not use heavy fuels such as No. 2 fuel oil or No. 2 Diesel. Using heavy fuels
will result in:

• clogged fuel filter and nozzle
• carbon build up on spark plug
• the need of non-toxic anti-icer in fuel during very cold weather

IMPORTANT: 

Use a KEROSENE ONLY storage container. Be sure storage

container is clean. Foreign matter such as rust, dirt, or water will cause the flame-
out control to shut down heater. Foreign matter may also require you to clean fuel
system often.

Summary of Contents for BV125EDI

Page 1: ...erstand this manual before assembling starting or servicing heater Improper use of heater can cause serious injury Keep this manual for future reference PORTABLE FORCED AIR HEATER OWNER S MANUAL 125 S...

Page 2: ...9 Service Procedures 10 Upper Shell Removal 10 Fan 10 Air Output Air Intake and Lint Filters 11 Pump Pressure Adjustment 11 Fuel Filter 12 Spark Plug 12 Nozzle 13 Pump Rotor 14 Speci cations 15 Wirin...

Page 3: ...er or other highly ammable vapors are present Follow all local ordinances and codes when using heater Never use heater without properly installed vent piping and regulator This heater must have fresh...

Page 4: ...haust gases to the outdoors through a ue pipe smoke stack or chimney When using the heater provide enough air for combustion and ventilation Provide proper power supply for the heater This manual cont...

Page 5: ...support frame Make sure air inlet end rear of heater is over wheels Line up holes on fuel tank ange with holes on wheel support frame 4 Place front handle and rear handle on top of fuel tank ange Inse...

Page 6: ...f 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...

Page 7: ...Standard 4 inch 10 16 cm draft regulator required if vent pipe ex ceeds 20 feet 6 1 meters in length To Start Heater 1 Follow all ventilation and safety information 2 Fill fuel tank with kerosene or...

Page 8: ...ive fumes IMPORTANT Do not store kerosene over summer months for use during next heating season Using old fuel could damage heater Never service heater while it is plugged in operating or hot Severe b...

Page 9: ...cal shock can occur Wrong pump pressure Carbon deposits on spark plug and or improper gap Dirty fuel lter Dirt in nozzle Water in fuel tank Electronic ignitor not grounded Bad electronic ignitor See P...

Page 10: ...ving motor from heater The weight of the motor resting on the fan could damage the fan pitch 1 Remove upper shell see above 2 Use 1 8 Allen wrench to loosen setscrew which holds fan to motor shaft 3 S...

Page 11: ...and Lint Filters Air Intake Filter Filter End Cover Air Output Filter Lint Filter Fan Guard Pump Pressure Adjustment 1 Remove pressure gauge plug from lter end cover 2 Install accessory pressure gaug...

Page 12: ...e fan guard and upper shell Figure 12 Fuel Filter Removal 1 0 FUEL FILTER REMOVAL Burner Head Combustion Chamber Fuel Filter Fuel Tube Flare Nut SPARK PLUG REMOVAL 70 100 150 PFA P 031B Burner Head Sp...

Page 13: ...zzle This will free any dirt in nozzle area 11 Inspect nozzle seal for damage 12 Replace nozzle into burner head Tighten nozzle rmly 80 110 inch pounds 9 1 12 4 n m 13 Attach burner head to combustion...

Page 14: ...01 mm at tightest position Adjust if needed 10 Install blades pump plate air lters and lter end cover 11 Replace fan guard and upper shell 12 Adjust pump pressure see page 11 Note If rotor is still bi...

Page 15: ...Air Output CFM CMM 317 8 97 RPM 2850 WIRING DIAGRAM Purchase this accessory from your local dealer ACCESSORY AIR GAUGE KIT HA1180 Special tool to check pump pressure Figure 20 Wiring Diagram Ignitor...

Page 16: ...ILLUSTRATED PARTS BREAKDOWN 1 2 4 3 45 5 12 39 11 13 6 18 17 15 14 40 24 47 21 23 26 44 42 19 20 40 41 22 28 43 46 30 29 55 54 32 31 40 37 33 36 40 34 27 53 52 16 41 38 39 51 25 35 7 8 9 10 56 48 49...

Page 17: ...M9900 77 Wire Assembly black 15 1 53 079010 14 Wire Assembly red 8 7 8 1 54 M9900 183 Wire Assembly black 6 1 55 M9900 184 Wire Assembly black 15 1 56 M30865 02 Open Closed Bushing 1 097650 01 Tradena...

Page 18: ...M10962 2 Spark Plug 1 KEY PART NO NO DESCRIPTION QTY 1 098784 02 Motor 1 2 079965 01 Pump Body 1 3 FHPF3 2C Screw 10 32 x 1 4 2 4 M22009 Rotor Insert 1 5 M22456 1 Pump Rotor 1 6 M50545 Pump Front Cov...

Page 19: ...19 NOTES...

Page 20: ...essly limited to repairing or replacing at DESA International s option any parts which appear to DESA Interna tional upon inspection to have been defective in material or workmanship when shipped from...

Reviews: