Dayton 3VG79 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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3VG79
Dayton Portable Forced
Air Heaters
Description
Dayton Model 3VG79 is a 200,000 Btu/Hr heater. This heater uses Kerosene or #1
fuel oil for combustion and electricity to run the motor. It is primarily intended
for indoor or outdoor temporary heating of buildings under construction,
alteration, or repair. It may be used in agricultural, industrial, and commercial
environments.
Figure 1 - Model 3VG79
Unpacking
1.Remove all packing items applied to
heater for shipment.
2.Remove all items from carton.
3.Check items for 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)
3VG79 120 Volt/60 Hertz 4.5
GENERAL SPECIFICATIONS
Output Fuel Tank Capacity Fuel Consumption
Model Rating Btu Fuel (U.S. Gallons) (U.S. Gallons/Hr.) Motor RPM
3VG79 200,000 Kerosene or No. 1 fuel oil 13.5 1.4 3450
Fuel Pump Heater Weight Heater Weight Spark Plug Gap
Model Pressure (PSI) (Pounds - with fuel) (Pounds - without fuel) (Inches)
3VG79 6 77 66 .110
Form 5S4068
Amperage
© 1997 W.W. Grainger, Inc.
Printed in U.S.A.
03430
0895/206/VCPVP
G 004
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Version B - For Reduction G016.J
Dayton Operating Instructions and Parts Manual
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Dayton Portable
Oil-Fired Heaters
Product Identification
Hot Air
Outlet
Lower Shell
3VG79
Upper Shell
Fan Guard
Fuel Cap
Figure 2 - Model 3VG79
Side Cover
Flame-out Control
Reset Button
Fuel Tank
Power Cord
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Dayton Operating Instructions and Parts Manual
Model 3VG79
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 IMMEDIA TE serious 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 severe
personal injury or death.
Under this heading,
installation, operating,
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!
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 heater
serviced. Some people are more affected by carbon monoxide than others.
These include pregnant women, people
with heart or lung disease or anemia,
those under the influence of alcohol,
and those at high altitudes.
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 Heaters
3VG79
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.
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
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
Figure 3 - Cross Section Operational View
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Dayton Operating Instructions and Parts Manual
Model 3VG79
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 sure 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 each screw
is inserted.
5. After all screws are inserted, 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 at least a three-square-foot
opening of fresh, outside air 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 feet wide
opening) raised five inches
• a single-car garage door (9 feet wide
opening) raised eight inches
• two windows (30 inches wide opening)
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.
Heater will start when extension cord is
plugged into outlet. If not, push in flameout control reset button (See Figure 5).
Flame-out Control
Reset Button
Figure 5 - Flame-out Control Reset Button
TO STOP HEATER
1.Unplug extension cord from outlet.
TO RESTART HEATER
1. Wait two minutes after stopping heater.
2. Repeat steps under T o Star t Heater.
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