Dura Heat DFA80T User manual

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PORTABLE
FORCED AIR HEATERS
“USER’S MANUAL”
MODEL: DFA50
DFA80T
DFA135C
DFA180CV
DFA220CV
carefully. This USER’S MANUAL has been designed to instruct you as to
the proper manner in which to assemble, maintain, store, and most
Please keep this manual for future reference.
LISTED
World Marketing of America, Inc.
RT.22 West, P.O. Box 192
Mill Creek, PA 17060
Telephone : [phone] (9AM - 4PM EST)
www.yourheater.com
MODEL: DFA50
DFA80T
DFA135C
DFA180CV
DFA220CV

1
DANGER: IMPROPER USE OF THIS HEATER CAN RESULT IN SERIOUS INJURY OR DEATH
FROM BURNS, FIRE, EXPLOSION, ELECTRICAL SHOCK AND/OR CARBON
MONOXIDE POISONING.
WARNINGS:
1. RISK OF INDOOR AIR POLLUTION!
• Use this heater only in well ventilated areas. Provide at least a three-square foot (2,800 sq. cm.)
opening of fresh outside air for each 100,000 BTU/hr. of heater rating.
• People with breathing problems should consult a physician before using the heater.
• Carbon monoxide poisoning: headaches, dizziness
and/or nausea. If you have these signs, the heater may not be working properly.
Get fresh air at once! Have the heater serviced. Some people are more affected by carbon monoxide than others.
These include pregnant women, persons with heart or lung diseas
those at high altitudes.
• Never use this heater in living or sleeping areas.
2. RISK OF BURNS / FIRE / EXPLOSION!
• NEVER use any fuel other than 1-K kerosene, #1/#2 diesel/fuel oil, JET A or JP-8 fuels in this heater.
• NEVER use fuel such as gasoline, benzene, paint thinners or other oil compounds in this heater.
(RISK OF FIRE OR EXPLOSION)
• NEVER
• NEVER ill hot.
CAUTION:Hot while in operation. Do not touch. Keep children,
clothing and combustibles away from heater.
Minimum Clearances: Outlet: 8 feet (250cm) / Sides, top and rear: 4 feet (125cm)
• NEVER block air inlet (rear) or air outlet (front) of heater.
• NEVER use duct work in front or behind of heater.
•
• NEVER transport heater with fuel in it’s tank.
•
• ALWAYS locate heater on a stable and level surface.
• ALWAYS keep children and animals away from heater.
• Bulk fuel storage should be a minimum of 25 ft. from heaters, torches, portable generators or other sources of ignition.
All fuel storage should be in accordance with federal, state or local authorities having jurisdiction.
3. RISK OF ELECTRIC SHOCK!
•on the model plate of the heater.
• Use only a three-prong, grounded outlet and extension cord.
• ALWAYS install the heater so that it is not directly exposed to water spray, rain, dripping water or wind.
• ALWAYS unplug the heater when not in use.
PROPOSITION 65 WARNING:
products of combustion of such fuels, contain chemicals known to the State of California to cause cancer,
birth defects and other reproductive harm.
MASSACHUSETTS RESIDENTS: Massachusetts state law prohibits the use of this heater in any
building which is used in whole or in part for human habitation. Use of this heating device in
CANADIAN RESIDENTS: Use of this heater shall be in accordance with authorities having
jurisdiction and CSA Standard B139.
NEW YORK CITY RESIDENTS: For use only at construction sites in accordance with applicable NYC
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
NEVER move or handle heater while it is hot, operating, or plugged in.
When used with an optional thermostat or if equipped with a thermostat, heater may start at any time.

2
ITEM PAGE #
PRECAUTIONS - SAFETY GUIDE ......................................................... 1
1. INTRODUCTION ............................................................................... 2
2. FEATURES.......................................................................................... 2
3. UNPACKING AND ASSEMBLY ....................................................... 4
4. FUELS ................................................................................................. 6
5. OVERVIEW OF HEATER DESIGN................................................... 7
6. FUELING YOUR HEATER................................................................ 8
7. OPERATION ....................................................................................... 8
8. LONG TERM STORAGE OF YOUR HEATER ................................ 9
9. MAINTENANCE ................................................................................ 10
10. REPLACING FUSE ............................................................................ 14
11. TROUBLESHOOTING GUIDE ......................................................... 15
12. WIRING DIAGRAM........................................................................... 16
13. SPECIFICATIONS .............................................................................. 17
14. EXPLODED PARTS DRAWING........................................................ 18
15. PARTS LIST ........................................................................................ 21
1. INTRODUCTION
Please read this USER’S MANUAL carefully. It will show you how to assemble, maintain, and operate the
2. FEATURES
Figure 1. DFA50 / DFA80T MODELS
CONTENTS OF USER’S MANUAL
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Fan Guard
Fuel Gauge
Fuel Cap
Front Guard
Hot Air Outlet
Lower Shell
Fuel Tank
Side Cover
Lamp
Thermostat Knob
(80T Model Only)
Power/Reset Switch
Power Cord
(Piggy Back,80T Model Only)
Upper Shell
Handle

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Figure 2. DFA135C MODEL
Figure 3. DFA180CV / DFA220CV MODELS
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10” Flat Free Wheel
Front Handle
Upper Shell
Rear Handle
Cord Wrap
Pressure Gauge
Fan Guard
Fuel Drain Bolt
Power Cord
(Piggy Back)
BTU Control Switch
Hot Air Outlet
Shell Lower
Fuel Gauge
Fuel Cap
Side Cover
Lamp
Thermostat Knob
Room Temp. Display
Power/Reset Switch
Power Cord
(Piggy Back)
Rear Handle
Fan Guard
Fuel Drain Bolt
Front Handle
Upper Shell
Hot Air Outlet
Shell Lower
Fuel Gauge
Fuel Cap
Side Cover
Lamp
Thermostat Knob
Room Temp. Display
Power/Reset Switch
10” Flat Free Wheel

4
Figure 4. DFA50 / 80T MODELS
Figure 5. DFA135C / 180CV / 220CV MODELS
3. UNPACKING AND ASSEMBLY
1. REMOVE THE HEATER AND ALL PACKING MATERIALS FROM THE BOX. (Fig. 4 and 5)
NOTE : Save the shipping carton and packing materials for future storage.
DFA50/80T DFA135C DFA180CV DFA220CV
Wheel Support Frame No Yes Yes Yes
Wheel No Yes Yes Yes
Threaded Axle No Yes Yes Yes
Front Handle No Yes Yes Yes
Rear Handle No Yes Yes Yes
Handle Yes No No No
Cord Wrap No No Yes Yes
Wheels
(10” Flat Free) Cord Wraps
Screws
Nuts Cap Nuts S
Hardware Kit : HW-KFA1016
Bushings Cap Nuts L
Flange Screws
Front Handle
Threaded Axle
Wheel Support Frame Rear Handle
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Hardware kit : HW-KFA1016 No Yes Yes Yes
Handle

5
2. ASSEMBLY
For DFA50/80T Models only
Tools Required
•Medium Phillips Screwdriver.
1) Lift front guard for arrow direction and make
hole on the upper housing.
2) Remove the pre-assembled screws on the shell
upper.
3) Align the holes in the upper housing with two
mounting holes on the handle as shown in Figure 6.
4) Secure handle with the screws removed.
For DFA135C/180CV/220CV Models only
Tools Required
•Medium Phillips Screwdriver.
•3/4 inch socket or adjustable wrench
Assembling Handle & Wheel and Cord Wrap
1) Slide threaded axle through the rear section of the wheel support frame.
2) Slide one axle bushing on to each side of the axle. Slide one wheel on to each side of the axle.
Attach one cap nut on to each side of the threaded axle and tighten well.
3)
frame.
4)
5) Align the hole on the handles with the mounting hole on the Cord Wrap.
(DFA180CV/220CV Models only)
6)
Figure 6. Assembling Handle
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Handle Screw Front Guard
Wedged Portion
Slit Hole
Shell Upper
Remove Screws

6
CAUTION: DO NOT OPERATE heater without support frame assembled to tank.
NOTE:
4. FUELS
For optimal performance of this heater, it is strongly suggested that 1-K kerosene be used. 1-K kerosene has
sulfur. Which can cause a rotten egg odor during
the operation of the heater. However, #1/#2 diesel/fuel oil, JET A or JP-8 fuels may also be used if 1-K
kerosene is not available. Be advised that these fuels do not burn as clean as 1-K kerosene, and care should
be taken to provide more fresh air ventilation to accommodate any added contaminants that may be added to
the heated space. #2 diesel/fuel oil heavier than 1-K kerosene in extreme cold temperatures
without nontoxic anti-icer additives will not ignite properly.
NEVER store kerosene in the living space. Kerosene should be stored in a well ventilated place outside the
living area.
NEVER use any fuel other than 1-K kerosene (#1/#2 diesel/fuel oil, JET A or JP-8 fuels are acceptable substitutes)
NEVER use fuel such as gasoline, benzene, alcohol, white gas, camp stove fuel, paint thinners, or other oil
compounds in this heater. These are volatile fuels that can cause an explosion or uncontrolled
NEVER store kerosene in direct sunlight or near a source of heat.
NEVER use kerosene that has been stored from one season to the next. Kerosene deteriorates over time.
KEROSENE SHOULD ONLY BE STORED IN A BLUE CONTAINER THAT IS CLEARLY
MARKED “KEROSENE”. NEVER STORE KEROSENE IN A RED CONTAINER.
Red containers are associated with gasoline.
“OLD KEROSENE” WILL NOT BURN PROPERLY IN THIS HEATER.
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 7. Assembling Handle, Wheel and Cord wrap
Hot Air Outlet
Fuel Tank Flange
Nut
Wheel Support Frame
Wheel
Cap Nut L
Cap Nut S
Rear Handle
Cord Wrap
Flange Screw
Threaded Axle
Wheel Bushing
Air Inlet
Front Handle
Screw

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5. OVERVIEW OF HEATER’S DESIGN
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8
6. FUELING YOUR HEATER
NEVER FILL THE HEATER FUEL TANK IN THE LIVING SPACE : FILL THE TANK OUTDOORS.
DO NOT OVERFILL YOUR HEATER AND BE SURE HEATER IS LEVELED.
IMPORTANT NOTICE REGARDING FIRST IGNITION OF HEATER :
manufacturing the heater to burn off outside.
B.) OPERATION
TO START HEATER
1. Fill fuel tank with fuel.
NOTE : Kerosene is recommended when the temperature drops below 0℉(-18℃) to prevent
ignition delay or failure.
2. Attach fuel cap.
3. Plug power cord of heater into three-prong, grounded extension cord. Extension cord must be at
least six feet long. Extension Cord Wire Size Requirements
• 6 to 100 feet (1.8 to 30.5 meters) long, use 16 AWG conductor.
• 101 to 200 feet (30.8 to 61 meters) long, use 14 AWG conductor.
4. Turn “THERMOSTAT CONTROL knob” to desired setting (setting range : 40˚F ~ 110˚F)
(DFA80T/135C/180CV/220CV Models Only)
5. Push “BTU control Switch” to “High” level. (See Figure 8.)
(DFA180CV/220CV Models Only)
6. Push Power Switch to “ON” position, Power lndicator Lamp will light and heater will start.
7. After startup, push “BTU control switch” to desired level “High or Low”
NOTE : Room Temperature display explanations are as follows: (DFA135C/180CV/220CV Models only)
• When the room temperature is less 0℉, the LED display will show “Lo”
• When room temp is between 0℉and 99℉, the number shown on the display is the current
room temperature.
• When room temperature is greater than 99℉, the LED display will show “Hi”
If heater does not start, the thermostat setting may be too low, turn “thermostat Control Knob” to
higher position to start heater. If heater still does not start, turn power switch to “OFF” and then to
“ON” position. If heater still does not start, see Troubleshootiong Guide on page15.
NOTE : User can select to operate the heater on two different BTU levels(High or Low).
To stabilize heater and prevent ignition delay, select BTU level after turning the heater on, or
while it is in operation by pushing the BTU control switch. If the heater started at low BTU level
in cold weather or low fuel tank, ignition failure can occur.
block fanguard in half with newspaper etc. until the heater ignites.
7. OPERATION
A.) VENTILATION
RISK OF INDOOR AIR POLLUTION/USE HEATER ONLY IN WELL VENTILATED AREAS.
Provide a fresh air opening of at least three square feet (2,800 sq. cm) for each 100,000 BTU/Hr.
rating. Provide extra fresh air if more heaters are being used.
Example : A DFA220CV heater requires one of the following:
• a two-car garage door raised six inches (15.24 cm)
• a single-car garage door raised nine inches (22.86 cm)
WARNING!! : NEVER REFILL HEATER FUEL TANK WHEN HEATER IS OPERATING OR STILL HOT.
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!

Push to"HIGH"
Push to"LOW"
Relief Valve
9
NOTICE : The majorelectrical components of this heaterare protected by a safety fuse mounted to the PCB board.
powersource to insure that propervoltage and frequency are being supplied to the heater.
TO STOP HEATER
1. Turn switch to “OFF” and unplug power cord.
TO RESTART HEATER
1. Wait 10 seconds after stopping heater.
2. Repeat steps under to start heater.
PIGGYBACK POWER CORD
WARNING : SHOCK HAZARD!
•Always cover electric outlet when not in use.
•Don’t plug and use an appliance more than 120V/60Hz 5A
current in this outlet. Figure 9. Piggyback Power Cord
Figure 10. Drain Bolt
DFA80T/DFA135C/DFA180CV/DFA220CV
Models only
Outlet
Cover
Seal
Fuel Drain Bolt
8. LONG TERM STORAGE OF YOUR HEATER
FUEL TANK DRAIN
1. Drain fuel tank through fuel cap opening.
(For DFA50/DFA80T Models Only)
2. Removefuel drain bolt fromrear bottom side of fuel tank using 3/4” socket or adjustable wrench and drain.
(For DFA135C/DFA180CV/DFA220CVModels Only. See Figure 10)
3. Using a small amount of kerosene, swirl and rinse the inside of the tank.
NEVERmix water withthe kerosene asit will cause rust inside the tank.
Pour the kerosene out making sure that you remove it all.
IMPORTANT : Do not store kerosene over summer months for use during next heating season.
Using old fuel could damage heater.
4. Reinstall fuel cap. Properly dispose of old and dirty fuel. (For DFA50/DFA80T Models Only)
5. 3/4” socket or adjustable wrench.
(DFA135C/DFA180CV/DFA220CVModels Only. See Figure 10)
IMPORTANT : Beforereinstalling the fuel drain bolt,make sure the seal is on the bolt. If the seal is
not used the bolt cannot be installed correctly andthe fuel tank will leak.
6. Store heater in dry well ventilated area. Make sure storage place is free of dust and corrosive fumes.
7. Store the heater in the original box with the original packing material and keep the USER’S MANUAL
with the heater.
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 8. Controls for All Models
Lamp Lamp
Thermostat
Control Knob
(DFA80T MODEL ONLY)
Thermostat
Control Knob
Fan Guard
DFA50/DFA80T Models DFA135C/180CV/220CV Models
Power/Reset
Switch
Power/Reset
Switch
Room Temp. Display BTU Control Switch BTU Control Switch
Push to"HIGH"
Push to"LOW"
Relief Valve

10
Figure 11. Air Intake Filter Access
Figure 12. Air Output Filter Access
Figure 13. Fan Assembly
9. MAINTENANCE
WARNING!! : NEVER SERVICE HEATER WHILE IT IS PLUGGED IN OR
WHILE HOT!
USE ORIGINAL EQUIPMENT REPLACEMENT PARTS. Use of third party or
other alternate components will void warranty and may cause unsafe operating
conditions.
A.) FUEL TANK
FLUSH EVERY 200 HOURS OF OPERATION OR
AS NEEDED (SEE STORAGE, PAGE 9)
B.) AIR INTAKE FILTER
WASH AND DRY WITH SOAP AND WATER
EVERY 500 HOURS OF OPERATION OR AS
NEEDED.
- Remove screws along each side of heater using
medium phillips screwdriver.
- Lift upper shell off.
- Remove fan guard.
-
- Reinstall fan guard and upper shell.
C.) AIR OUTPUT FILTER, LINT FILTER
REPLACE EVERY 500 HOURS OF OPERATION
OR ONCE A YEAR.
- Remove upper shell and fan guard (See Air Intake Filter).
- Turn Air pressure gauge counter-clock wise and
remove.
-
phillips screwdriver.
-
-
-
- Reinstall fan guard and upper shell.
D.) FAN BLADES
CLEAN EVERY SEASON OR AS NEEDED.
- Remove upper shell (See Air Intake Filter).
- Use M6 allen wrench to loosen set screw
which holds fan blade to motor shaft.
- Slip fan blade off motor shaft.
- Clean fan blade using a soft cloth moistened with
kerosene or solvent.
- Dry fan blade thoroughly.
- Reinstall fan blade on motor shaft. Place fan
-
- Reinstall upper shell.
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Lint Filter
End Filter Cover
Air Output Filter
Screw
Pressure Gauge Air Intake Filter
Set Screw
Motor Shaft
Fan Blade
Flush
Motor
Screw Upper Shell
Air Intake Filter
Fan Guard
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11
E.) NOZZLE
REMOVE DIRT IN NOZZLE AS NEEDED (SEE PAGE 16).
(For DFA50/80T/135C/180CV Models Only)
- Remove upper shell (See page 10).
- Remove fan blade (See page 10).
- Remove fuel and air line hoses from nozzle adaptor.
- Remove ignitor wire from spark plug.
- Remove spark plug from nozzle adaptor using medium
phillips screwdriver.
- Turn nozzle adaptor 1/9 turn(40°) to counter clock wise
and pull toward motor to remove. (See Figure 14)
- Place plastic hex-body into vise and lightly tighten.
- Carefully remove nozzle from nozzle adaptor using 5/8”
socket wrench.
- Blow compressed air through face of nozzle.
(this will remove any dirt in nozzle)
- Reinstall nozzle into nozzle adaptor until nozzle seats.
Tighten 1/3 turn more using 5/8” socket wrench.
(40~45 inch-pounds)
- Reinstall nozzle adaptor to burner head.
- Reinstall spark plug to nozzle adaptor.
- Attach ignitor wire to spark plug.
- Attach fuel and air line hoses to nozzle adaptor.
- Reinstall fan blade and upper shell.
(For DFA220CV Model Only)
- Remove upper shell (See page 10).
- Remove fan (See page 10).
- Remove fuel and air line hoses from nozzle adaptor.
- Remove ignitor wire from spark plug.
- Remove spark plug from nozzle adaptor using medium
phillips screwdriver.
- Turn nozzle adaptor 1/8 turn (45°) to counter clock wise
and pull toward motor to remove. (See Figure 15)
- Place plastic hex-body into vise and lightly tighten.
- Carefully remove nozzle from nozzle adaptor using 5/8”
socket wrench.
- Blow compressed air through face of nozzle.
(this will remove any dirt in nozzle)
- Reinstall nozzle into nozzle adaptor until nozzle seats
Tighten 1/3 turn more using 5/8” socket wrench
(40~45 inch-pounds)
- Reinstall nozzle adaptor to burner bracket
- Reinstall spark plug to nozzle adaptor.
- Attach ignitor wire to spark plug.
- Attach fuel and air line hoses to nozzle adaptor.
- Reinstall fan blade and upper shell.
- Reinstall upper shell.
Figure 14. Nozzle Replacement
Figure 15. Nozzle Replacement
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Screw
Combustion Chamber
Ignitor Wire
Spark Plug
Nozzle Adaptor
Air Line
Fuel Line
Burner Head
Nozzle Adaptor
Nozzle Face
Nozzle
Nozzle Adaptor
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12
F.) SPARK PLUG
CLEAN AND REGAP EVERY 600 HOURS
OPERATION OR REPLACE AS NEEDED.
(For DFA50/80T/135C/180CV Models Only)
-Remove upper shell (See page 10).
- Remove fan (See page 10).
- Remove ignitor wire from spark plug.
- Remove spark plug from nozzle adaptor using medium
phillips screwdriver.
- Clean and regap spark plug electrodes to 3.5mm gap.
- Reinstall spark plug to nozzle adaptor.
- Attach ignitor wire to spark plug.
- Reinstall fan and upper shell.
(For DFA220CV Model Only)
- Remove upper shell (See page 10).
- Remove fan (See page 10).
- Remove ignitor wire from nozzle adaptor.
- Remove spark plug from nozzle adaptor using medium
phillips screwdriver.
- Clean and regap spark plug electrodes to 3.5mm gap.
(0.138”)
- Reinstall spark plug to nozzle adaptor.
- Attach ignitor wire to spark plug.
- Reinstall fan and upper shell.
G.) PHOTOCELL
CLEAN PHOTOCELLANNUALLY OR AS
NEEDED.
- Remove upper shell (See page 10).
- Remove fan (See page 10).
- Remove photocell from it’s mounting.
Clean photocell lens with cotton swab.
TO REPLACE:
- Remove side cover screws using medium phillips
screwdriver.
- Disconnect switch wires from power switch and
remove side cover.
- Disconnect wires from circuit board and remove
photocell.
- Install new photocell and connect wires to circuit
board.
- Replace switch wires to power switch and side cover.
- Replace fan and upper shell.
Figure 16. Spark Plug Regap
Figure 17. Spark Plug Regap
Figure 18. Photocell Replacement
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Switch
Wires
Bracket
Photocell
Lens
Incorrect Correct
Photocell
Wire
Install Photocell
Nozzle Adaptor
Ignitor Wire
Spark Plug
Screw
GAP
Spark Plug
Ignitor Wire
Screw
Spark Plug
Nozzle Adaptor
Spark Plug
GAP
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13
H.) FUEL FILTER
CLEAN OR REPLACE TWICE A HEATING
SEASON OR AS NEEDED.
- Remove side cover screws using medium
phillips screwdriver.
- Disconnect switch wires from power switch
and remove side cover.
-
-
pull to remove (DFA50/80T Models only).
-
remove (DFA135C/180CV/220CV Models only).
-
-
- Replace switch wires to power switch.
- Reinstall side cover.
I.) PUMP PRESSURE ADJUSTMENT
NOTE:If the pump pressure needs to be adjusted,
make sure the heater is running on the
HIGH BTU setting.
- Push the BTU CONTROL Switch to HIGH.
(See Operation, page 8, DFA180CV/220CV
Models only)
- Remove Pressure Gauge Plug from End Filter
Cover. Install accessory Pressure Gauge.
(DFA50/80T/135C Models only)
- Start heater (See Operation, page 8)
Allow motor to reach full speed
-
Turn relief valve to clockwise to increase
pressure. Turn relief valve to counter clockwise
to decrease pressure.
- Stop heater (See Operation, page 8)
NOTE: USE ONLY ORIGINAL EQUIPMENT
REPLACEMENT PARTS.
Use of alternate or third party components will
void any warranty and may cause unsafe
operating condition.
MODEL Pump Pressure
High BTU level Low BTU level
DFA50 3.8 psi N/A
DFA80T 3.8 psi N/A
DFA135C 5.5 psi N/A
DFA180CV 6.5 psi 4.5 psi
DFA220CV 8.5 psi 6.5 psi
Figure 19. Fuel Filter Replacement
Figure 20. Adjusting Pump Pressure
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Fuel Filter
Fuel line
Switch Wires
Screw Side Cover
Power Switch
Flat blade
Screw driver
DFA50/80T/135C Models Only
DFA180CV/220CV Models Only
Relief Valve
Relief Valve
Pressure Gauge
Pressure Gauge
Pressure Gauge Plug
End Filter Cover
BTU Control Switch
http://worldmkting.com/kerosene-forced-air-heater-tech-support

14
Figure 21. Replacing Fuse
10. REPLACING FUSE
NOTICE : This heater is fuse protected.
If your heater fails to ignite, DO NOT RETURN YOUR HEATER TO THE
STORE.
Please follow the simple instructions below to inspect and change the fuse.
WARNING : SHOCK HAZARD
To prevent personal injury, unplug the power cord before replacing fuse.
1. Unplug heater.
2. Remove side cover screws using medium phillips screw driver.
3. Disconnect switch wires from power switch.
4. Remove fuse from fuse holder.(See Figure 21.)
5. Replace fuse.
WARNING : FIRE HAZARD
6. Replace switch wires to power switch.
7. Replace side cover.
PROCEDURE FOR REPLACING FUSE
Fuse Holder
Fuse Holder
DFA80T/135C/180CV/220CV Models
DFA50 Model
Fuse
Fuse
Switch Wire
Power Switch
Side Cover
Screw
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
http://worldmkting.com/kerosene-forced-air-heater-tech-support


11. TROUBLESHOOTING GUIDE
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Heater ignites but MAIN PCB
assembly shuts heater off after a
short period of time.
IndiFator Lamp is ÁiFNering and
room temp. display indicates “ E1 “)
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Heater will not ignite but motor
runs for a short period
of time.Indicator Lamp is ÁicNering
and room temp.display
indicates “ E1 “)
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SHH SSDUN 3OXJ 3DJH 
Fan does not turn when heater is
plugged in and power switch was in
the “ ON “ Position.
Indicator Lamp is on or ÁicNering)
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 %DG HOHFWULFDO FRQQHFWLRQ EHWZHHQ
PRWRU DQG M$,1 3&% DVVHPEO\
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KLJKHU VHWWLQJ
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:LULQJ DLDJUDP 3DJH 
Indicator Lamp is ÁicNering and
room temp. display indicates “E2”)
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SHH :LULQJ GLDJUDP 3DJH 
Indicator Lamp is ÁicNering and
room temp. display indicates “E3”)
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SHH :LULQJ GLDJUDP 3DJH 
Heater will not turn-on
(Indicator Lamp is off)
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SHH :LULQJ DLDJUDP 3DJH 
1E9E5LE$9 E 7+E +E$7E5
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CN3
RED
RED
CN7
RED
CONTROL
SWITCH
EARTH
GREEN
60Hz
BLACK
PLUG
AC120V
8A/125VAC
WHITE
BLACK
ORANGE
POWER
BLACK
POWER
BLACK
PHOTO CELL
LIMIT
FUSE
BLACK
PW-W/H
PW-BLK
RED
CN2
2P
(LED)
CN1 CN1
POWER LAMP
CN3 RED
DISPLAY PCB CONTROL PCB
WHITE
15uF/230VAC
EARTH
GREEN
MOTOR WHITE
CAPACITOR
IGNITOR
BLACK
BLACK
BLACK
PUMP
SPARK PLUG
SWITCH CONTROL
BLACK
GREEN
EARTH
AC120V
60Hz
PLUG
8A/125VAC
BLACK
WHITE
SPARK PLUG
(TEMP. CONTROL)
BLACK
BLACK
THERMOSTAT
CELL
PHOTO
POWER
FUSE
SENSOR
ROOM
POWER LIMIT
BLACK
WHITE
CN2(AC2)/
CN1(AC1)/
CN6
CN5
WHT
BLK
EARTH
GREEN
CAPACITOR
RED WHITE
MOTOR
POWER LAMP
(LED)
IGNITOR
ORANGE
CN4
BLACK
BLACK
PUMP
BLACK
CONTROL PCB
MODEL CAPACITOR
80T
135C/180CV/220CV 20uF/350VAC
15uF/230VAC
16
12. WIRING DIAGRAM
A) WIRING DIAGRAM (DFA50 Model)
B) WIRING DIAGRAM (DFA80T/135C/180CV/220CV Models)
1E9E5LE$9 E 7+E +E$7E5
81$77E1DED :+,LE %851,1*

32.0"(813mm) 11.7"(297mm)
16.7"(424mm)
DW
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13. SPECIFICATIONS
DFA50 / DFA80T Models
DFA135C / DFA180CV / DFA220CV Models
D)$1& D)$1&9
D)$&9
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MODEL DFA50 DFA80T DFA135C DFA180CV DFA220CV
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LOW 1$ 1$ 1$ 1 1
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1E9E5LE$9 E 7HE HE$7E5
81$77E1DED WH,LE %851,1*

BURNER HEAD ASSEMBLY
MOTOR AND PUMP ASSEMBLY
18
14. EXPLODED PARTS DRAWING (DFA50 / 80T / 135C Models Only)
NOTE : SPECIFY MODEL NUMBER AND PART NUMBER WHEN ORDERING PARTS.
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
38
26
23
19
32
8
7
37
40
36
39
18 25
24
15
17
9
16
10
15
11 12
34
29
35
1
4
3
28
27
6
5
33
2
31
30
14
23-17
23-4
23-14
23-13
23-12
23-10
23-16
23-15
23-11
23-7
23-5
23-2 23-6
23-1
23-3
23-8
23-9
23-18
23-19
23-20
23-21
20-1 20-2
23-4
23-3
23-5
23-6
23-7
23-8
20
21
22
13

19
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
14. EXPLODED PARTS DRAWING ((DFA180CV Model Only)
NOTE : SPECIFY MODEL NUMBER AND PART NUMBER WHEN ORDERING PARTS.
21-17
21-4
21-14
21-13
21-12
21-10
21-16
21-15
21-11
21-7
21-5
21-2 21-6
21-1
21-3
21-8
21-9
21-18
21-19
21-20
21-21
25
24
21
11 20
19
18
18-8
18-7
18-6
18-5
18-3
18-4
18-2
18-1
12
29
30 2
32
5
6
26
27
3
4
1
34
28 33
10
9
15
8
14
7
15
13
22
23
16
37
35
31
17
36