Thermoheat KFA75L Manual

CONSUMER : Retain this manual for future reference.
Questions, problems, missing parts? Before returning to your retailer, call our customer
service department at 877-447-4768 8:30 a.m. - 4:30 pm CST, Monday - Friday.
or email us at [email protected]
INDOOR/OUTDOOR PRODUCTS
KEROSENE PORTABLE
FORCED AIR HEATERS
“USER’S MANUAL AND
OPERATING INSTRUCTIONS”
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, maintain, store, and most
importantly, how to operate the heater in a safe and efficient manner.
Please keep this manual for future reference.
COMPLIES WITH UL733 AND
ANSI A10.10-1998
CAN/CSA/B140.0-03 AND CSA
B140.8-1967
MODEL : KFA75L, KFA125L, KFA210L

1
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
DANGER:IMPROPER USEOF THIS HEATER CAN RESULT IN SERIOUS INJURY OR DEATH
FROM BURNS, FIRE, EXPLOSION, ELECTRICALSHOCK AND/OR CARBON
MONOXIDEPOISONING.
WARNINGS:
1. RISK OF INDOOR AIR POLLUTION!
•Usethis 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 beforeusing 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 notbeworking properly.
Get fresh air at once!Have the heater serviced. Some people are more affected by carbon monoxide than others.
These includepregnant women, persons with heart or lung disease or anemia, thoseunder the influence of alcohol, or
those at high altitudes.
•Never use this heater in living or sleeping areas.
2. RISK OFBURNS/FIRE/EXPLOSION!
•NEVER use any fuel other than1-K kerosene, #1 disel/fuel oil inthis heater.
•NEVER use fuel suchasgasoline, benzene, paint thinners or otheroil compounds in this heater.
(RISK OF FIRE OR EXPLOSION)
•NEVER use thisheater where flammable vapors may be present.
•NEVER refill the heaters fuel tank while heater is operating or is still hot.
Minimum Clearances: Outlet: 8 feet (250cm) /Sides, top and rear: 4 feet (125cm)
•NEVER block airinlet (rear) or air outlet (front) of heater.
•NEVER use duct work in front orbehind of heater.
•NEVER move, handle, service a hot, operating or plugged in heater.
•NEVER transport heater with fuel init’s tank.
•When used withanoptional thermostat or if equipped with a thermostat heater may start at any time.
•ALWAYSlocate heaterona stable and level surface.
•ALWAYSkeep children andanimalsaway 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.
•ALWAYSinstall the heater so that it is not directlyexposed to water spray, rain, dripping water or wind.
•ALWAYSunplug the heater when not in use.
PROPOSITION 65 WARNING: Fuels used in gas, wood-burning or oil fired appliances, and the
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
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.
CAUTION :Hot while in operation. Do not touch. Keep children,
clothing and combustibles away from heater.

2
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
ITEM PAGE #
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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
Fan Guard
BTU Control Switch
Cord Wrap
Pressure Gauge
Fuel Gauge
Fuel Cap
Front Guard
Hot Air Outlet
Lower Shell
Fuel Tank
Side Cover
Lamp
Thermostot Knob
Power/Reset Switch
Power Cord
(Piggy Back)
Upper Shell
Handle
Figure 1. KFA75L MODEL

3
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 2. KFA125L MODEL
Figure 3. KFA210L MODEL
Hot Air Outlet
Shell Lower
Fuel Gauge
Fuel Cap
Side Cover
Lamp
Thermostot Knob
Room Temp. Display
Power/Reset Switch
10” Flat Free Wheel
Hot Air Outlet
Shell Lower
Fuel Gauge
Fuel Cap
Side Cover
Thermostot Knob
Lamp
Room Temp. Display
Power/Reset Switch
10” Flat Free Wheel
Front Handle
Rear Handle
Rear Handle
Upper Shell
Front Handle
Electric Outlet
Upper Shell
Cord Wrap
Cord Wrap
BTU Control Switch
Pressure Gauge
Fan Guard
Power Cord
(Piggy Back)
Fuel Drain Bolt
BTU Control Switch
Pressure Gauge
Fan Guard
Power Cord
Fuel Drain Bolt

4
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 5. KFA125L/ KFA210L MODELS
Handle Cord Wraps Hardware Kit
HW-KFA1001
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.
Figure 4. KFA75L MODEL
KFA75L KFA125L KFA210L
Wheel Support Frame No Yes Yes
Wheel No Yes Yes
seYseYoNThreaded Axle
seYseYoNFront Handle
Rear Handle seYseYoN
oNoNseYeldnaH
seYseYseYparWdroC
Hardware kit : HW-KFA1001 Yes No No
Hardware kit : HW-KFA1016 No Yes Yes
Cap Nuts S
Hardware Kit : HW-KFA1016
(10" Flat Free)
Wheels
Cord Wraps
Screws Flange Screws
Nuts Bushings Cap Nuts L
Axle
Rear Handle
Wheel Support Frame
Front Handle

5
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
2. ASSEMBLY
For KFA75L Model only
(Assembly time for this product is 5 minutes)
Tools required for Assembly :
ⅰ) Medium Phillips Screwdriver.
ⅱ) 3/4 inch Socket or Adjustable Wrench
For KFA125L/210L Models only (Assembly time for this product is 10 minutes)
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 on the upper housing.
2) Align the holesinthe upper housing with
two mounting holes on the handle as shown
in Figure6.
3) Secure handle with Screws with provided.
4)
Insert cord wrap into the rectangle holes on the
supporter and align the hole on the cord wrap with
the mounting hole on the side cover as shown in Figure 6.
5) Secure cord wrap with Screws with provided.
Figure 6. Assembling Handle & Cord Wrap
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 frane.
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) Place heater on wheel support frame. Align the holes on fuel tank flange with holes on wheel support frame.
4) Position the Handles on top of fuel tank flange.
Insert screws through handles, fuel tank flange and wheel support frames as shown in Figure 8 and
attach nut finger tight after each screw is inserted.
5) Align the hole on the handles with the mounting hole on the Cord Wrap.
Insert Screws through Cord Wrap, handles and attach nut finger tight after each screw is inserted.
6) After all screws are inserted, tighten nuts firmly.
Suppotor
Screw
Side Cover
Screw
Cord Wrap
Wedged Portion
Slit Hole
Handle Front Guard

6
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 diesel/fuel oil 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 diesel and #1 oil 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 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 7. Assembling Handles & Wheels
CAUTION : DO NOT OPERATE heater without support frame assembled to tank.
NOTE : Heater should be inspected before each use, and at least annually by a qualified service person.
Cap Nut L
Wheel Wheel Bushing
Threaded Axle
Rear Handle
Air Inlet
Cord Wrap
Cap Nut S
Nut
Hot Air Outlet
Screw
Flange Screw
Front Handle
Wheel Support Frame
Flange
Fuel Tank

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.
Once the temperature falls below the reset temperature you will be able to start your heater.
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.
7
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Internal Shut-Off Temp. Reset Temperature
MODELS Plus/Minus 10 Degrees Plus/Minus 10 Degrees
KFA75L 176˚F/80˚C122˚F/50˚C
KFA125L 230˚F/110˚C194˚F/90˚C
KFA210L 194˚F/90˚C140˚F/60˚C
FUSE TYPE: All Models 125 volt / 8 amps

6. FUELING YOUR HEATER
NEVER FILL THE HEATER FUEL TANKIN THE LIVINGSPACE : 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 TANKWHEN 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 (2,800 sq. cm) for each 100,000 BTU/Hr.
rating. Provide extra fresh air if more heaters are being used.
Example : A KFA210L 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 fifteen inches (38.1 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 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)
and push “BTU control Switch” to desired level “High or LOW” (See Figure 8.)
5. Push Power Switch to “ON” position, Power lndicator Lamp will light and heater will start.
NOTE : Room Temperature display explanations are as follows: (KFA125L/210L 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). The BTU level can
be selected before turning the unit on, or while it is in operation by pushing the BTU control switch.
8
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 8. Controls for All Models
Power/Reset
Switch
KFA75L Model KFA125L/210L Models
Room Temp. Display
Power/Reset
Switch
Thermostat
Control Knob Thermostat Control Knob
Lamp Lamp
BTU Control Switch BTU Control Switch
Fan Guard
Push to “HIGH”
Push to “LOW”

9
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
NOTICE : Themajor electrical components of this heater are protected by a safety fusemounted to the PCB board.
If yourheater fails to start, check this fusefirst and replace as necessary. You should also check your
power source to insure that proper voltageand frequency are being supplied to theheater.
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.
EXTRA ELECTRIC OUTLET & PIGGYBACK POWER CORD
WARNING : SHOCK HAZARD!
8. LONG TERM STORAGE OF YOUR HEATER
FUEL TANK DRAIN
1. Drain fuel tank through fuel cap opening.
(For KFA75L Model Only)
2. Remove fuel drain bolt from rear bottom side of fuel tank using 3/4” socket or adjustable wrench and drain.
(For KFA125L/210L Models Only. See Figure 10)
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 KFA75LModel Only)
5. Reinstall fuel drain bolt to Fuel tank and tighten firmly using 3/4” socket or adjustable wrench.
(For KFA125L/210L Models Only. See Figure 10)
IMPORTANT : Before reinstalling the fuel drain bolt, make sure the seal is on the bolt. If the seal is
not used the bolt cannot be installed correctly and the 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.
•Always cover electric outlet
when not in use.
•Don’t plug and use a appliance
more than 120V/60Hz 5A
current in this outlet
Figure 10. Fuel Drain Bolt
Fuel Drain Bolt
Seal
revoCrevoC
Outlet
KFA210L Model only KFA75L/125L Models only
Figure 9. Electric Outlet
Outlet

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.
- Wash or replace air intake filter.
- Reinstall fan guard and upper shell.
C.) AIR OUTPUT FILTER, LINT FILTER
REPLACE EVERY 500 HOURS OF OPERATION
OR ONCE A YEAR.
- Removeupper shell and fan guard (See Air Intake Filter).
- Trun Air pressure gauge counter-clock wise and
remove.
- Remove end filter cover screws using medium
phillips screwdriver.
- Remove end filter cover.
- Replace air output and lint filter.
- Reinstall end filter cover and air pressure gauge.
- 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
blade hub flush with end of motor shaft.
- Place set screw on flat of shaft. Tighten set screw
firmly (40-50 inch-pounds/4.5-5.6 N-m).
- Reinstall upper shell. 10
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
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.
Figure 11. Air Intake Filter Access
Figure 12. Air Outprt Filter Access
Figure 13. Fan Assembly
Motor
Flush
Fan Blade
Motor Shaft
Set Screw
Screw Upper Shell
Air Intake Filter
Fan Guard
Air Intake Filter
Pressure Gauge
Screw
Air Output Filter
End Filter Cover
Lint Filter

11
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
E.) NOZZLE
REMOVEDIRTIN NOZZLE AS NEEDED (SEE PAGE16).
(For KFA75L/125L 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 lightlry 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 KFA210L 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.
Figure 15. Nozzle Replacement
Figure 14. Nozzle Replacement
Screw
Combustion Chamber
Ignitor Wire
Spark Plug
Nozzle Adaptor
Air Line
Fuel Line
Burner Head
Nozzle Adaptor
Nozzle Face
Nozzle
Nozzle Adaptor
Fuel Line
Air Line
Nozzle Adaptor
Combustion Chamber
Screw
Ignitor Wire
Spark Plug
Bracket-Burner
Nozzle Adaptor
Nozzle Face
Nozzle
Nozzle Adaptor

12
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
F.) SPARK PLUG
CLEAN AND REGAP EVERY 600 HOURS
OPERATION OR REPLACE AS NEEDED.
(For KFA75L/125L 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 KFA210L 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”)
(0.138”)
- ReInstall spark plug to nozzle adaptor.
- Attach ignitor wire to spark plug.
- Reinstall fan and upper shell.
G.) PHOTOCELL
CLEAN PHOTOCELL ANNUALLY 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
Ignitor Wire
Screw
Spark Plug
Nozzle Adaptor
Spark Plug
GAP
Nozzle Adaptor
Ignitor Wire
Spark Plug
Screw
GAP
Spark Plug
Power
Side Cover
Switch
Wires
Screw
Wire
Bracket
Photocell
Switch
Lens
Install Photocell
CorrectIncorrect
Photocell

H.) FUEL FILTER
CLEAN OR REPLACE TWICE A HEATING
SEASON OR AS NEED.
- Remove side cover screws using medium phillips
screwdriver.
- Disconnect switch wires from power switch and
remove side cover.
- Pull fuel line off fuel filter neck.
- Turn fuel filter 90˚ to counter clockwise and pull to
remove (KFA75L Model only).
- Turn fuel filter 90˚ to clockwise and pull to remove
(KFA125L/210L Models only).
- Wash fuel filter with clean fuel and replace in tank.
- Attach fuel line to fuel filter neck.
- 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 on page 8)
- Start heater (See Operation, page 8)
Allow motor to reach full speed
- Adjust pressure (Using a flat blade screwdriver)
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.
Pump Pressure
High BTU level Low BTU level
KFA75L
KFA125L
KFA210L
Fuel Filter
Fuel line
Switch Wires
Screw
Side Cover
Power Switch
13
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 19. Fuel Filter Replacement
Figure 20. Adjusting Pump Pressure
MODEL
3.8 psi
5.5 psi
8.5 psi
2.7 psi
3.5 psi
6.5 psi
Flat blade
Screwdriver
Pressure Gauge
Relief Valve

14
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
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 instruction 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 with enclosed fuse.
WARNING : FIRE HAZARD
To avoid fire, Do not substitute with a higher or lower current rating.
6. Replace switch wires to power switch.
7. Replace side cover.
NOTE : Specified fuse rating : AC 125/8A
PROCEDURE FOR REPLACING FUSE
Screw
Side Cover
Power Switch
Switch Wire
Fuse
Fuse Holder
Figure 21. Replacing Fuse

15
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
11. TROUBLE SHOOTING GUIDE
2. See Air Output,Air intake2. Dirty Air Output,Air Intake
a short period of time.
Heater will not turn-on
room temp. display indicates "E3")
(Indicator Lamp is flickering and
room temp. display indicates "E2")
(Indicator Lamp is flickering and
(Indicator Lamp is on or flickering)
was in the " ON " Position.
is plugged in and power switch
Fan does not turn when heater
indicates " E1 ")
and room temp.display
of time.(Indicator Lamp is flickering
motor runs for a short period
Heater will not ignite but
room temp. display indicates " E1 ")
(Indicator Lamp is flickering and
(Indicator Lamp is off)
temperature limit safety device
and PCB board.
4. Bad electrical connection between
1. Room Temp. sensor disconnected.
3. Blown fuse.
2. No electrical power
device is overheated.
1. Temperature limit safety
1. Thermostat switch failure.
2. Sensor Failure.
See Wiring Diagram, Page 16.
4. Check electrical connections
3. Replace safety fuse in PCB board.
Check power supply.
extension cord are plugged in.
2. Check to insure heater cord and
and allow to cool(about 10 min.)
1. Turn power switch to "OFF"
See Wiring diagram, Page 16.
1. Replace switch.
See Wiring diagram, Page 16.
2. Replace sensor.
See Wiring diagram, Page 16.
1. Reconnect sensor.
8. Ignitor wire is not attached to
PCB assembly.
between motor and MAIN
2. Bad electrical connection
1. Thermostat setting is too low.
spark plug.
PCB assembly.
between ignitor and MAIN
7. Bad electrical connection
6. Water in fuel tank.
5. Dirt in Nozzle.
4. Dirty fuel filter.
plug and/or improper gap.
3. Carbon deposits on spark
2. Wrong pump pressure.
1. No fuel in tank.
8. Defective Photocell.
PCB assembly.
between photocell and MAIN
7. Bad electrical connection
Properly installed.(Not seeing the
flame)
6. Photocell Assembly not
5. Dirty Photocell Lens.
4. Dirt in Nozzle.
3. Dirty Fuel Filter.
or Lint Filter.
See Wiring Diagram, Page 16.
2. Check electrical connections,
to a higher setting.
1. Turn thermostat control knob
plug. See Spark Plug, Page 12.
8. Attach ignitor wire to spark
See wiring diagram, Page 16.
7. Check electrical components
kerosene, Page 9.
6. Flush fuel tank with clean
5. See Nozzle,Page 11.
4. See Fuel Filter,Page 13.
3. See Spark Plug,Page 12.
Page 13.
2. See Pump Pressure Adjustment,
1. Fill tank with kerosene.
8. Replace Photocell, Page 12.
See wiring diagram, Page 16.
7. Check electrical components
Page 12.
properly seated in bracket,
6. Make sure photocell boot is
5. Clean Photocell Lens, Page 12.
4. See Nozzle, Page 11.
3. See Fuel Filter, Page 13.
and Lint Filters, page 10.
assembly shuts heater off after
Heater ignites but MAIN PCB
TROUBLE POSSIBLE CAUSE
1. Wrong pump pressure
Page 13.
1. See Pump Pressure Adjustment,
CORRECTIVE ACTION

16
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
12. WIRING DIAGRAM
A) WIRING DIAGRAM (KFA75L/KFA125L)
B) WIRING DIAGRAM (KFA210L)
(TEMP. CONTROL)
THERMOSTAT
POWER LAMP
POWER
SWITCH
CN5
POWER
PLUG
PHOTO
CELL
60Hz
AC120V GREEN
EARTH
BLACK
BLACK
BLACK
(LED)
CAPACITOR
COLOR
I/G WIRE
SPARK PLUG
CN1(AC1)/
FUSE
8A/125VAC
BLUE
LIMIT
CONTROL
WHITE
SENSOR
BLACK
ROOM
CN6
BLUE
BLK
BLACK
WHITE
125L
75L
MODEL
WHITE
BLACK
BLACK
RED
CN2(AC2)/
CONTROL PCB
ORANGE
IGNITOR
GREEN
WHT
CN4
RED
PUMP
MOTOR
EARTH
BLACK
BLACK
WHITE
BLACK
15uF/230VAC
20uF/350VAC
CAPACITOR
CN3
POWER
PLUG
AC120V
60Hz
BLACK
ORANGE
RED
BLACK
BLACK
EARTH
GREEN
BLACK
BLACK
WHITE
BLACK
EARTH
GREEN
PHOTO
CELL
OUTLET
ELECTRIC
SENSOR
POWER
SWITCH
ROOM
CONTROL
BLUE
LIMIT
BLUE
FUSE
8A/125VAC
BLACK
CONTROL PCB
THERMOSTAT
POWER LAMP
(LED)
(TEMP. CONTROL)
CN5
CN2(AC2)/
CN1(AC1)/
CN6
WHT
BLK
CN4
WHITE
BLACK
WHITE
BLACK
BLACK
20uF/350VAC
GREEN
EARTH
PUMP
MOTOR
IGNITOR
CAPACITOR
SPARK PLUG
CN3

17
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
KFA75L Model
KFA125L / KFA210L Models
23.1"(587 )
33.5"(850 )
KFA125L KFA210L
41.9"(1,063 ) 47.4"(1,205 )
32.4"(824 )
21.5"(547 )
D
W
H
MODEL KFA75L KFA125L KFA210L
HIGH 75,000 125,000 210,000
LOW 55,000 100,000 170,000
HIGH 0.57(2.16) 0.95(3.60) 1.6(6.06)
LOW 0.42(1.59) 0.76(2.90) 1.3(4.92)
Fuel Tank Capacity - Gal.(./Hr)5(18.9) 10(37.9) 13(49.2)
HIGH 3.8(0.27) 5.5(0.39) 8.5(0.60)
LOW 2.7(0.19) 3.5(0.25) 6.5(0.46)
zH06/caV021zH06/caV021zH06/caV021zH/tloV
7.35.26.1.spmA
111esahP
32.0×11.7×16.7
(813×297×424)
41.9×21.5×32.4
(1,063×547×824)
47.4×23.1×33.5
(1,205×587×850)
Weight Lbs.( 26.9(12.2) 54.5(24.7) 62.4(28.3)
)
13. SPECIFICATIONS
Fuel Consumption
- Gal./Hr(./Hr)
Pump Pressure PSI(kgf/)
BTU/Hr.
Size(D W H), Inch( )
H
WD
16.7"(424mm)
11.7"(297mm)32.0"(813mm)

NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
14. EXPLODED PARTS DRAWING (KFA75L/125L Models Only)
NOTE : SPECIFY MODEL NUMBER AND PART NUMBER WHEN ORDERING PARTS.
18
39
42
38
41
42
19
20 21 22 25
26
24
16
18
9
17
27
10
14
12
13
23
11
36
31
37
1
4
3
30
29
7
6
5
35
2
33
32
34
15
24-17
8
24-4
24-14
24-13
24-12
24-10
24-16
24-15
24-11
24-7
24-5
24-2
24-6
24-1
24-3
24-8
24-9
24-18
24-19
24-20
24-21
28
BURNER HEAD ASSEMBLY
MOTOR AND PUMP ASSEMBLY
21-1 21-2
21-4
21-3
21-5
21-6
21-7
21-8

19
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
15. PARTS LIST (KFA75L/125L Models Only)
KEY NO. DESCRIPTION PART NO.
KFA75L KFA125L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
21-1
21-2
21-3
21-4
21-5
21-6
21-7
21-8
22
23
24
24-1
24-2
24-3
24-4
24-5
24-6
24-7
24-8
24-9
Fuel Tank Assembly
Fuel Drain-Bolt
Fuel Gauge
Fuel Filter Assembly
Fuel Cap
Cord Bushing
Power Cord
Thermistor
Shell Lower
Flange Screw
Clip Nut
Bushing-Grommet(S)
Bushing-Grommet(L)
Air-Line
Temperature Limit Assembly
Flange-Screw
Chamber Assembly
Bracket Photocell
Screw-BH1
Photocell Assembly
Burner Head Assembly
Burner Head
Nozzle
Washer-Nozzle Seal
Spring-Nozzle Seal
O-Ring
Nozzle adaptor
Spark Plug
Bolt-Flange
Flange Screw
Fuel Line
Motorand Pump Assembly
Motor
Capacitor
Motor Support
Nut-Hex
Capacitor Holder
2151-0027-00
-
2156-0049-00
2155-0005-00
2151-0003-00
3712-0013-00
3980-0177-00
38C0-0054-00
3111-0343-02
4319-0015-00
3131-0182-00
3231-0120-00
3231-0121-00
3341-0021-00
2153-0022-00
4319-0015-00
2152-0116-00
3131-0159-00
4311-0068-00
*SP-KFA1007
2152-0121-00
3531-0026-00
*SP-KFA1027
4349-0016-00
3431-0010-00
3311-0002-00
3231-0178-00
*SP-KFA1008
4329-0079-00
4319-0015-00
3341-0024-00
2154-0074-00
3970-0210-00
3820-0257-00
3121-0481-00
4331-0022-00
-
3541-0022-00
4321-0198-00
See SP-KFA1000
1
See SP-KFA1000
1
2151-0028-00
4329-0072-00
2156-0050-00
2155-0001-00
2151-0003-00
3712-0013-00
3980-0177-00
38C0-0054-00
3111-0344-02
4319-0015-00
3131-0182-00
3231-0120-00
3231-0121-00
3341-0002-00
2153-0023-00
4319-0015-00
2152-0117-00
3131-0159-00
4311-0068-00
*SP-KFA1007
2152-0122-00
3531-0025-00
*SP-KFA1003
4349-0016-00
3431-0010-00
3311-0002-00
3231-0179-00
*SP-KFA1009
4329-0079-00
4319-0015-00
3341-0025-00
2154-0075-00
3970-0211-00
3820-0258-00
3121-0482-00
4331-0022-00
3231-0182-00
3541-0022-00
4321-0198-00
See SP-KFA1000
1
See SP-KFA1000
1
1
1
1
1
1
1
1
1
1
4
8
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
3
1
1
1
1
1
2
1
1
2
1
4
Quantity
Pump Body
Bolt-BH Special
Rotor
Blade