Dura Heat DFA45 User manual

World Marketing of America, Inc.

12256 William Penn Hwy

Mill Creek, PA 17060

1- 800 - 776 - 9425 (9AM - 4PM EST)

MON.- FRI. ONLY

www.yourheater.com

MODEL:

DFA-45

DFA-70

DFA-125

LISTED

PORTABLE

FORCED AIR HEATERS

“USER’S MANUAL”

Before the first use of this heater, please read this USER’S MANUAL very

carefully. This USER’S MANUAL has been designed to instruct you as to

the proper manner in which to assemble the heater, maintain the heater,

store the heater, and most importantly, how to operate the heater in a safe

and efficient manner. Please keep this manual for future reference.

C US

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

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: 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 the 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, or 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 in this heater. #1 fuel oil is the only acceptable

substitute.

•NEVER use fuel such as gasoline, benzene, paint thinners or other oil compounds in this heater.

(RISK OF FIRE OR EXPLOSION)

•NEVER use this heater where flammable vapors may be present.

•NEVER refill the heaters fuel tank while heater is operating or is still hot.

• This heater is EXTREMELY HOT while in operation. Keep all combustible materials 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 move or handle heater while still hot.

•NEVER transport heater with fuel in it’s tank.

• When used with an optional thermostat heater may start at any time.

•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!

• Use only the electrical power (voltage and frequency) specified 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.

CALIFORNIA RESIDENTS: This heater produces carbon monoxide, which is listed by the State of

California as a reproductive toxin under Proposition 65.

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

Massachusetts requires local fire dept. permit (M.E.L.C. 148, Section 10A.)

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

codes

under NYCFD certificate of approval #5034 and 5037.

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

ITEM PAGE #

PRECAUTIONS - SAFETY GUIDE 1

1. INTRODUCTION 2

2. FEATURES 2

3. UNPACKING AND ASSEMBLY 4

4. KEROSENE (1-K OR NO. 1 FUEL OIL) 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 13

11. TROUBLE SHOOTING GUIDE 14

12. WIRING DIAGRAM 15

13. SPECIFICATIONS 16

14. EXPLODED PARTS DRAWING 17

15. PARTS LIST 18

1. INTRODUCTION

Please read this USER’S MANUAL carefully. It will show you how to assemble, maintain, and operate the

heater safely and efficiently to obtain full benefits from its many built-in features.

2. FEATURES

CONTENTS OF USER’S MANUAL

Figure 1. DFA-45 / DFA-70 MODEL

Fuel Gauge

Fan Guard

Handle

Hot Air Outlet

Front Guard

Upper Shell

Lower Shell

Side Cover

Power/Reset Switch

Lamp

Fuel Cap

Fuel Tank

Power Cord

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

Figure 2. DFA-125 MODEL

Drain Plug

Fuel Gauge

Lower Shell

Hot Air Outlet

Power/Reset

Switch

Power Cord

Fan Guard

Upper Shell

Handle

Fuel Cap

Lamp

Side Cover

Fuel Tank

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

DFA-45 DFA-70 DFA-125

Wheel Support Frame No No Yes

Wheels No No Yes

Handle Yes Yes Yes

Axle No No Yes

Hardware Kit:HW-KFA1000

Yes Yes No

Hardware Kit:HW-KFA1010

No No Yes

Handle

Wheel Support Frame

Axle

Figure 3. DFA-45 / DFA-70 MODEL

Figure 4. DFA-125 MODEL

Handle Screws

Hardware Kit Part No : HW-KFA1000

3. UNPACKING AND ASSEMBLY

1. REMOVE THE HEATER AND ALL PACKING MATERIALS FROM THE BOX. (Fig. 3 and 4)

NOTE : Save the shipping carton and packing materials for future storage.

Wheels

Screws L&S Flange Screws Flat Washers

Nuts

Split pins

Hardware Kit Part No : HW-KFA1010

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

2. ASSEMBLY

A. For DFA-45/DFA-70 Models Only (Figure 5)

Tools Required

• Medium Phillips Screwdriver

1. Lift front guard for arrow direction and make

sure that guard’s wedged portion fits into the slit

hole in the upper shell and faces the hot air outlet.

2. Align the holes in the upper shell with the 2

mounting holes on the handle as shown in Figure 5.

3. Insert screws into the holes in the handle and tighten

each screw.

B. For DFA-125 model only (Figure 6)

These models are furnished with wheels and handles. Wheels, handles, and the mounting

hardware are found in the shipping carton.

Tools Required

• Medium Phillips Screwdriver

• 5/16 M5) Open or Adjustable Wrench, Use Us(Inch) Screws Nut.

• Long Nose Pliers

1. Slide axle through wheel support frame. Install wheels on axle.

NOTE: When installing wheels, point extended hub of wheels toward

wheel support frame (see Figure 6)

2. Place flat washers and split pin on axle ends and bend split pins with long

nose pliers to secure.

3. Place heater on wheel support frame. Make sure air inlet end (rear) of heater is

over wheels. Align the holes on fuel tank flange with holes on wheel support frame.

4. Position the handle on top of fuel tank flange. Insert screws through handles, fuel

tank flange, and wheel support frames as shown in Figure 6 and attach nut finger

tight after each screw is inserted.

5. After all screws are inserted, tighten nuts firmly.

CAUTION: DO NOT OPERATE heater without support frame assembled to tank.

Figure 5

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

4. KEROSENE (1-K)

For optimal performance of this heater, it is strongly suggested that 1-K kerosene be used. 1-K kerosene

has been refined to virtually eliminate contaminants, such as sulpher. Which can cause a rotten egg odor

during the operation of the heater. However, #1 or #2 fuel oil (diesel fuel) 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 accomodate any added contaminants that may be added to the

heated space.

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.

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 fuel oil is an acceptable substitute.)

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

flames.

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.

“OLD KEROSENE” WILL NOT BURN PROPERLY IN THIS HEATER.

Figure 6. Wheel and Handle Assembly, DFA-125 MODEL

NOTE : Heater should be inspected before each use, and at least annually by a qualitied service person.

Hot Air Outlet

Fuel Tank Flange

Wheel Support

Nut

Split Pin

Wheel

Flat Washer

Screw-S

Screw-L

Flange Screw

Handle

Extended Hub

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

5. OVERVIEW OF HEATERS DESIGN

Fuel System: This heater is equipped with an

electric air pump that forces air through the air line

connected to the fuel intake and then through a

nozzle in the burner head. When the air passes in

front of the fuel intake it causes fuel to rise from the tank and into the burner nozzle. This fuel and air

mixture is then sprayed into the combustion chamber in a fine mist.

“Sure Fire Ignition”: The electronic ignitor sends voltage to a specially designed spark plug.

The spark plug ignites the fuel and air mixture described above.

The Air System: The heavy duty motor turns a fan that forces air into and around the

combustion chamber. Here the air is heated and then forced out the front of the heater.

The Safety System:

A. Temperature Limit Control: This heater is equipped with a Temperature Limit Control designed

to turn off the heater should the internal temperature rise to an

unsafe level. If this device activates and turns your heater off it

may require service.

B. Electrical System Protection: This heaters electrical system is protected by a fuse mounted to the

PCB Assembly that protects it and other electrical components from

damage. If your heater fails to operate check this fuse first and

replace as needed.

C. Flame-Out Sensor: Utilizes a photocell to monitor the flame in burn chamber during

normal operation. It will cause the heater to shut-off should the

burner flame extinguish.

Once the temperature falls below the reset temperature you will be able to start your heater.

Internal Shut-Off Temp. Reset Temperature

MODELS Plus/Minus 10 Degrees Plus/Minus 10 Degrees

DFA-125 230˚F/110˚C 194˚F/90˚C

DFA-45/DFA-70 176˚F/80˚C 122˚F/50˚C

FUSE TYPE: All Models 125 volt / 8 amps

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

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:

The first time you light the heater, it should be done outdoors. This allows the oils, etc. used in

manufacturing the heater to burn off outside.

WARNING!!: NEVER REFILL HEATER FUEL TANK WHEN HEATER IS OPERATING

OR STILL HOT.

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 (2800 sq. cm) for each 100,000 BTU/Hr.

rating. Provide extra fresh air if more heaters are being used.

Example: A DFA-125 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)

• two, thirty-inch (76.20 cm) windows raised twelve inches (30.48 cm)

B.) OPERATION

TO START HEATER

1. Fill fuel tank with kerosene or No. 1 fuel oil.

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 10 feet (1.8 to 3 meters) long, use 18 AWG conductor.

• 11 to 100 feet (3.4 to 30.5 meters) long, use 16 AWG conductor.

• 101 to 200 feet (30.8 to 61 meters) long, use 14 AWG conductor.

4. Push power switch to “on” position, power indicator lamp will light and heater will start.

Lamp

Power/Reset

Switch

NOTICE: The major electrical components of this heater are protected by a safety fuse mounted to

the PCB board. If your heater fails to start, check this fuse first and replace as necessary.

You should also check your power source to insure that proper voltage and frequency are

being supplied to the heater.

Figure 7. DFA-45/70/125 MODELS

NEVER LEAVE THE HEATER

UNATTENDED WHILE BURNING!

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.

8. LONG TERM STORAGE OF YOUR HEATER

FUEL TANK DRAIN

1. Drain fuel tank through fuel cap opening. (For DFA-45/70 Models Only)

2. Remove drain plug from rear bottom side of fuel tank by pulling plug grip downward and drain.

(For DFA-125 Model Only. See Figure 8)

3. Using a small amount of kerosene, swirl and rinse the inside of the tank.

NEVER mix water with the kerosene as it 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 DFA-45/65 Models Only)

5. Reinstall Drain Plug as follows. (For DFA-125 Model Only. See Figure 9)

- Insert plug’s seal head fully into drain hole so that flange is flush to tank’s bottom.

- Insert seal cap fully into head hole so that cap flange is flush to head flange.

IMPORTANT : Reinstall plug fully into hole in tank, Otherwise it will not seal completely.

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.

Figure 8 Figure 9

Drain Plug

Plug Grip

Drain Hole

Seal Head

Head Hole

Seal Cap

Cap Flange

Head Flange

Fuel Tank

Head Flange

Rear bottom side

of Fuel Tank

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