Dayton 3VG79A User Manual
Operating Instructions & Parts Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.
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3VG79A
Dayton Portable Forced
Air Heater
Description
Dayton Model 3VG79A is a 200,000 Btu/Hr heater. This heater uses only Kerosene
or No. 1 fuel oil for combustion and electricity to run the motor. It is primarily
intended for indoor and outdoor temporary heating of well-ventilated buildings
under construction, alteration, or repair. It may be used in agricultural, industrial,
and commercial environments.
Figure 1 - Model 3VG79A
Unpacking
1. Remove all packing items supplied
with heater for shipment.
2. Remove all items from carton.
3. Check items for any shipping
damage. If heater is damaged,
promptly inform dealer where you
bought heater.
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ARL LOGO
ELECTRICAL SPECIFICATIONS
Model Electrical Input (during normal run)
3VG79A 120 Volt/60 Hertz 4.5
GENERAL SPECIFICATIONS
Output Hot Air Output Fuel Tank Capacity Fuel Consumption
Model Rating Btu (CFM Approx) Fuel (U.S. Gallons) (U.S. Gallons/Hr.) Motor RPM
3VG79A 200,000 600 Kerosene or No. 1 fuel oil 13.5 1.4 3450
Air Pump Heater Weight Heater Weight Spark Plug Gap
Model Pressure (psi) (Pounds - with fuel) (Pounds - without fuel) (Inches)
3VG79A 6 77 66 .110
Form 5S4068
Amperage
Printed in U.S.A.
03430
0899/294/VCPVP
G 004
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Dayton Operating Instructions and Parts Manual
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Dayton Portable
Oil-Fired Heater
Product Identification
Hot Air
Outlet
Lower Shell
3VG79A
Upper Shell
Fan Guard
Fuel Cap
Side Cover
Flame-out Control
Reset Button
Fuel Tank
Power Cord
Figure 2 - Model 3VG79A
Thermostat Knob
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Dayton Operating Instructions and Parts Manual
Model 3VG79A
General Safety Information
Make certain you read and understand
all warnings. Keep these instructions for
reference. They are your guide to safe
and proper operation of this heater.
Safety information appears throughout
these instructions. Pay close attention to
them. Below are definitions for the safety
information listed throughout this manual.
Under this heading,
installation, operating, and maintenance procedures or
practices will be found that, if not
carefully followed, WILL result in IMMEDIATE serious personal injury or death.
Under this head-
ing, installation,
operating, and maintenance procedures or practices will be found that, if
not carefully followed, COULD result in
severe personal injury or death.
Under this heading,
installation, operat-
ing, and maintenance procedures or
practices will be found that, if not carefully
followed, COULD result in minor personal
injury, product or property damage.
IMPORTANT: Every possible circumstance
that might involve a hazard cannot be
anticipated. The warnings in this manual
and on tags or decals affixed to the unit
are therefore not all-inclusive. If a
procedure, work method, or operating
technique not specifically recommended
by Dayton is used, you must make sure it
is safe for you and others. You should
also ensure that equipment will not be
damaged or made unsafe by the operating or maintenance method you choose.
Carbon monoxide
poisoning may lead
to death! Some people are more
affected by carbon monoxide than
others. 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 operating properly, or the areas
may not be sufficiently ventilated. Get
fresh air at once! Have heater serviced.
Improper use of
this heater can
cause serious injury or death from
burns, fire, explosion, electrical shock,
and carbon monoxide poisoning.
Make certain you read and understand
all warnings. Keep these instructions for
reference. They are your guide to safe
and proper operation of this heater.
• 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 reservoir integral with
the heater unit).
g) Whenever possible, fuel storage
shall be confined to areas where
floor penetrations 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.
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Dayton Operating Instructions and Parts Manual
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Dayton Portable
Oil-Fired Heater
3VG79A
General Safety Information
(Continued)
• Use only in well-vented areas.
Provide at least three square feet
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.
• When used with thermostat, heater
may start 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 pluggedin heater.
• Never attach duct work to front or
rear of heater.
• Warning to New York City Residents
For Use Only At Construction Sites in
accordance with applicable NYC codes
under NYCFD certificate of approval
#4803, #4899, #4908, #4909, or #4934.
Theory of Operation Fuels
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.
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.
Combustion
Chamber
Clean
Heated
Air Out
Fuel
Tank
Figure 3 - Cross Section Operational View
Nozzle
Air For Fuel
System
avoid risk of fire or explosion. Never use
gasoline, naphtha, paint thinners,
alcohol, or other highly flammable fuels.
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 buildup on spark plug
• the need of nontoxic anti-icer in fuel
during very cold weather
IMPORTANT: Use a KEROSENE ONLY
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.
Spark
Burner
Plug
Head
Fuel
Filter
Air For Combustion and Heating
Motor
Fan
Air Line
To Burner
Use only Kerosene
or No. 1 fuel oil to
Air Pump
Air Intake
Filter
Cool
Air In
Air
Output
Filter
Electronic
Ignitor
Fuel
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Dayton Operating Instructions and Parts Manual
Model 3VG79A
Assembly
This 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: When installing wheels,
point extended hub of wheels toward
wheel support frame (See Figure 4).
Front
Handle
Hot Air
Outlet
Fuel
Tank
Flange
Wheel
Support
Frame
Cap Nut
Figure 4 - Wheel and Handle Assembly
Screw
Nut
Axle
Wheel
2. Place cap nuts on axle ends. Gently tap
with hammer to secure.
3. Place heater on wheel support frame.
Make sur e air inlet end (rear) of heater
is over wheels. Line up holes on fuel
tank flange with holes on wheel
support frame.
Rear
Handle
Air
Inlet
Extended
Hub
4. Place handles on top of fuel tank flange.
Insert screws through handles, fuel tank
flange, and wheel support frame.
Attach nut finger tight after inserting
each screw.
5. After inserting all screws, tighten nuts
firmly.
Ventilation
Follow the mini-
mum fresh, outside
air ventilation requirements. If proper
fresh, outside air ventilation is not
provided, carbon monoxide poisoning
can occur. Provide proper fresh, outside
air ventilation before running heater.
FRESH AIR OPENING REQUIREMENTS
Square Feet
Heater Size Opening
200,000 Btu/Hr 6.0
Provide a fresh air opening at least three
square feet for each 100,000 Btu/Hr
rating. Provide extra fresh air if more
heaters are being used.
Example: A 200,000 Btu/Hr heater
requires one of the following:
• a two-car garage door (16 foot wide
opening) raised five inches
• a single-car garage door (9 foot wide
opening) raised eight inches
• two 30-inch windows raised fifteen
inches
Operation
Review and
understand the
warnings in the Safety Information
Section. They are needed to safely
operate this heater. Follow all local
codes when using this heater.
TO START HEATER
1. Follow all ventilation and safety
information.
2. Fill fuel tank with Kerosene or No. 1 fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into threeprong, grounded extension cord. Extension cord must be at least six feet long.
EXTENSION CORD WIRE SIZE
REQUIREMENTS
• 6 to 10 feet long, use 18 AWG
rated cord
• 11 to 100 feet long, use 16 AWG
rated cord
• 101 to 200 feet long, use 14 AWG
rated cord
5. Plug extension cord into standard 120 volt/
60 hertz, three-hole, grounded outlet.
Adjust thermostat to desired setting. If
heater does not start, thermostat setting
may be too low. Turn thermostat knob to
higher position to start heater. If thermostat is in HIGH position and heater still will
not start, push in flame-out control reset
button (See Figure 5).
NOTE: A cold heater may affect the thermostat setting. This thermostat is a generalheating contol. It is not intended for precise
temperature control. Adjust thermostat until heater cycles at the desired setting.
Flame-out Control
Reset Button
Figure 5 - Flame-out Control Reset Button
TO STOP HEATER
Unplug extension cord from outlet.
TO RESTART HEATER
1. Wait two minutes after stopping heater.
2. Repeat steps under To Start Heater.
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