Page 1
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.
®
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.
®
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
®
Version B - For Reduction G016.J
Page 2
Dayton Operating Instructions and Parts Manual
®
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
2
Page 3
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.
®
3
Version B - For Reduction G016.J
Page 4
Dayton Operating Instructions and Parts Manual
®
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
4
Page 5
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.
®
5
Version B - For Reduction G016.J
Page 6
Dayton Operating Instructions and Parts Manual
®
Dayton Portable
Oil-Fired Heaters
3VG79
Maintenance
Never service
plugged in, operating, or hot. Severe
burns and electrical shock can occur.
UPPER SHELL REMOVAL
1. Remove screws along each side and top
of heater using 5/16" nut-driver. These
screws attach upper and lower shells
together (See Figure 6).
2. Lift upper shell off.
3. Remove fan guard.
Upper
Shell
Figure 6 - Upper Shell Removal
FAN
IMPORTANT: Remove fan from motor
shaft before removing motor from heater.
The weight of the motor resting on the
fan could damage the fan pitch.
1. Remove upper shell (See Figure 6).
2.Use 1/8" allen wrench to loosen
setscrew which holds fan to motor
shaft.
3.Slip fan off motor shaft.
4.Clean fan using soft cloth moistened
with kerosene or solvent.
heater while it is
Screw
Fan
Guard
5.Dry fan thoroughly.
6.Replace fan on motor shaft. Place fan
hub flush with end of motor shaft (See
Figure 7).
Fan
Motor
Flush
Motor
Shaft
Setscrew
Figure 7 - Fan Cross Section
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inches-pounds).
8. Replace fan guard and upper shell.
AIR OUTPUT, AIR INTAKE, AND LINT
FILTERS
1. Remove upper shell (See Figure 6).
2.Remove filter end cover screws using
5/16" nut-driver.
3.Remove filter end cover.
4.Replace air output and lint filters.
5.Wash or replace air intake filter (See
Preventative Maintenance Schedule,
page 9).
6.Replace filter end cover.
7.Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
Air Intake Filter
Lint Filter
Air Output
Filter
Figure 8 - Air Output, Air Intake, and Lint
Filters
PUMP PRESSURE ADJUSTMENT
1.Remove pressure gauge plug from filter
end cover.
2.Install accessory pressure gauge (part
number HA1180).
3.Start heater (See Operation, page 5).
Allow motor to reach full speed.
4.Adjust pressure to 6.0 PSI. Turn relief
valve to right to increase pressure. Turn
valve to left to decrease pressure (See
Figure 10, page 7).
5.Stop heater. Remove pressure gauge.
Replace pressure gauge plug in filter
end cover.
Figure 9 - Pressure Gauge Plug Removal
Filter End Cover
Fan Guard
Relief Valve
Pressure
Gauge Plug
6
Page 7
Dayton Operating Instructions and Parts Manual
Model 3VG79
Maintenance (Continued)
Pressure
Gauge
Figure 10 - Adjusting Pump Pressure
FUEL FILTER
1.Remove side cover screws using 5/16"
nut-driver.
2.Remove side cover (See Figure 11).
3.Pull lower fuel line off the fuel valve
fitting.
4.Carefully pry bushing, lower fuel line,
and fuel filter out of fuel tank.
5.Wash fuel filter with clean fuel and
replace in tank.
6.Attach lower fuel line to fuel valve
fitting.
7.Replace side cover.
FUEL VALVE
1. Remove side cover (See Figure 11), fan
guard, and upper shell (See Figure 6,
page 6) screws using 5/16" nut-driver.
2. Remove fan (See Fan, page 6).
3. Pull lower fuel line off the fuel valve
fitting (See Figure 12).
Bushing, Lower Fuel Line,
and Fuel Filter
Side
Cover
Figure 11 - Fuel Filter Removal
Fuel Valve
Fitting
4. Disconnect 3 electrical wires from fuel
valve. Note location of green ground
wire (See Figure 12).
5. Using 1/4" nut driver remove 2 screws
holding fuel valve and bracket to lower
shell (See Figure 12). Save these screws.
6. Using 1/4" nut driver remove 2 screws
holding fuel valve to bracket. Save these
screws
Terminal for Green
Fuel Valve
Electrical Wires
Ground Wire
Green
Ground
Wire
Valve
Fittings
Screw
Bracket
Screw
7.Attach new fuel valve to bracket with 2
existing screws.
8.Install new fuel valve and bracket on
lower shell.
9.Connect wiring and upper and lower
fuel lines to fuel valve. Make sure green
ground wire is connected to correct
terminal (See Figure 12).
10.Replace fan, fan guard, upper shell, and
side cover.
SPARK PLUG
1. Remove upper shell (See Figure 6, page
6).
2.Remove fan (See page 6).
3.Remove spark plug wire from spark
plug.
Burner Head
Figure 13 - Spark Plug Removal
Spark Plug Wire
Wave
Spring
Washer
Spark
Plug
4.Remove spark plug and wave spring
washer from burner head using 13/16"
open-end wrench.
5.Clean and regap spark plug electrodes
to .110 gap.
Bend Here
to Adjust
Gap
High Voltage.
Lower Fuel
Line
Figure 12 - Fuel Valve Replacement
7
Gap
Figure 14 - Spark Plug Gap
®
Version B - For Reduction G016.J
Page 8
Dayton Operating Instructions and Parts Manual
®
Dayton Portable
Oil-Fired Heaters
3VG79
Maintenance (Continued)
6.Install spark plug and wave spring
washer in burner head. Torque 40 to 60
inch-pounds. Then adjust (if necessary)
to bring side electrode into the acceptable range (See Figure 15).
Side
Electrode
270°
Acceptable
270˚
Range For
ACCEPTABLE RANGE
FOR SIDE ELECTRODE
Side
Electrode
Figure 15 - Acceptable Range For Side
Electrode
7. Attach spark plug wire to spark plug.
8. Replace fan (See page 6).
9. Replace fan guard and upper shell.
NOZZLE
1. Remove upper shell (See page 6).
2. Remove fan (See page 6).
3. Remove fuel and air line hoses from
burner head.
4. Remove spark plug wire from spark
plug.
5. Remove spark plug from burner head
using 13/16" open-end wrench.
6. Remove three screws using 5/16" nut-
driver and remove burner head from
combustion chamber.
Combustion
Chamber
Burner Head
Spark Plug
Wire
Screw
Wave
Spring
Washer
Fuel Line Hose
Air Line Hose
Figure 16 - Removing Burner Head
Spark
Plug
7. Place burner head into vise and lightly
tighten.
8. Carefully remove nozzle from burner
head using 5/8" socket wrench (See
Figure 17).
Nozzle
Face
Nozzle Seal
Nozzle
Burner
Head
Air Line
Fitting
Fuel Line
Fitting
9.Blow compressed air through face of
nozzle. This will free any dirt in nozzle
area.
10.Inspect nozzle seal for damage.
11.Replace nozzle into burner head and
tighten firmly (80-110 inch-pounds).
12.Attach burner head to combustion
chamber.
13.Install spark plug in burner head.
14.Attach spark plug wire to spark plug.
15.Attach fuel and airline hoses to burner
head.
16.Replace fan (See page 6).
17.Replace fan guard and upper shell.
PUMP ROTOR
(Procedure if rotor is binding)
1. Remove upper shell (See page 6).
2. Remove filter end cover screws using
5/16" nut-driver.
3. Remove filter end cover and air filters.
4. Remove pump plate screws using 5/16"
nut-driver.
Blade
Pump Plate
Air Intake Filter
Filter End Cover
Insert
Rotor
Air Output Filter
Fan Guard
Figure 18 - Rotor Location
Figure 17 - Removing Nozzle
8
Page 9
Dayton Operating Instructions and Parts Manual
Model 3VG79
Maintenance (Continued)
5. Remove pump plate.
6. Remove rotor, insert, and blades.
7. Check for debris in pump. If debris is
found, blow out with compressed air.
8. Install insert and rotor.
9. Check gap on rotor. Adjust to
.003"/.004" if needed (See Figure 19).
Blade
Figure 19 - Gap Adjusting Screw Locations
NOTE: Rotate rotor one full turn to insure
the gap is .003"/.004" at tightest position.
Adjust if needed.
10.Install blades, pump plate, air filters,
and filter end cover.
Gap Adjusting Screw
.003"/.004" Gap
Measured With
Feeler Gauge
Rotor
Gap Adjusting Screw
11.Replace fan guard and upper shell.
12.Adjust pump pressure (See page 16).
NOTE: If rotor is still binding, proceed as
follows.
13.Perform steps 1 through 6 above.
14.Place fine grade sandpaper (600 grit)
on flat surface. Sand rotor lightly in
“figure 8” motion four times (See
Figure 19).
Sandpaper
Figure 20 - Sanding Rotor
15.Reinstall insert and rotor.
16.Perform steps 10 through 12 above.
STORING, TRANSPORTING, OR SHIPPING
NOTE: If shipping, transport companies
require fuel tanks to be empty.
1.Drain fuel tank.
NOTE: This model has a drain plug on
underside of fuel tank. Remove drain plug
to drain all fuel. Be sure all fuel is removed.
2.Replace drain plug.
3.If any debris is noted in old fuel, add 1
or 2 quarts of clean kerosene to tank,
stir, and drain again. This will prevent
excess debris from clogging filters
during future use.
4.Replace fuel cap and drain plug.
Properly dispose of old and dirty fuel.
Check with local automotive service
stations that recycle oil.
5.If storing, store heater in dry place.
Make sure storage place is free of dust
and corrosive fumes.
IMPORTANT: Do not store kerosene over
summer months for use during next
heating season. Using old fuel could
damage heater.
Preventative Maintenance Schedule
Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can
occur.
Item
How Often
Fuel tank Flush every 150-200 hours of operation or as needed. See Storing, Transporting, or Shipping,
Air output and Replace every 500 hours of operation or once a year. See Air Output, Air Intake, and Lint
lint filters Filters, page 6.
Air intake filter Wash and dry with soap and water every 500 hours of See Air Output, Air Intake, and Lint
operation or as needed. Filters, page 6.
Fuel filter Clean twice a heating season or as needed. See Fuel Filter, page 7.
Spark plug Clean and regap every 600 hours operation or replace as needed. See Spark Plug, page 7.
Fan blades Clean every season or as needed. See Fan, page 6.
Motor Not required/permanently lubricated.
9
How To
above.
Version B - For Reduction G016.J
®
Page 10
Dayton Operating Instructions and Parts Manual
3VG79
For Replacement Parts, call 1-800-323-0620
®
Dayton Portable
24 hours a day - 365 days a year
Oil-Fired Heaters
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts Operations
P.O. Box 3074
1657 Shermer Road
Northbrook, IL 60065-3074 U.S.A.
Figure 21 - Motor and Pump Assembly
17
1
2
3
4
16
1
15
18
5
14
6
13
12
7
8
9
10
11
Figure 22 - Burner Head Assembly
2
8
3
4
7
5
6
1
6
7
4
5
Figure 23 - Fuel Valve Assembly
10
4
8
2
3
Page 11
Dayton Operating Instructions and Parts Manual
Model 3VG79
Replacement Parts List
Motor and Pump Assembly - Figure 21
Ref. Part
No. Description Number Qty.
1 Motor 102001-07 1
2 Pump Body 079975-03 1
3 Screw, #10-32 x 5/8" *FHPF3-6C 2
4 Rotor Insert **M22009 1
5 Pump Rotor **M22456-2 1
6 Pump End Cover M50545 1
7 Intake Filter **M12179 1
8 Filter End Cover M16545-02 1
9 Steel Ball, 1/4" Diameter **M8940 1
(*) Standard hardware item, available locally.
(**)See MAINTENANCE KITS, page 14.
3VG79
Ref. Part 2E510D 2E511D
Ref. Part
No. Description Number Qty. Qty.
No. Description Number Qty.
10 Relief Spring **M10993-1 1
11 Adjusting Screw **M27694 1
12 Plug **M22997 1
13 Screw, #10-32 x 1" *M12461-31 4
14 Output Filter **M12244-1 1
15 Lint Filter **M11637 1
16 Barb Fitting M50820-02 1
17 Blade **M8643-2 4
18 Screw, #10-32 x 1.12" *M12461-32 6
Burner Head Assembly - Figure 22
Ref. Part
No. Description Number Qty.
1 Nozzle 100735-13 1
2 Nozzle Washer M10659-1 2
3 Nozzle Spring M10809-1 1
4 Nozzle Sleeve M8882 1
Fuel Valve Assembly - Figure 23
Ref. Part
No. Description Number Qty.
1 Fuel Valve 103128-01 1
2 Fuel Valve Bracket 103129-01 1
3 Hex Head Screw, 3-32 x 1/4"*M12461-13 2
4 Fitting Barb M50820-02 2
Ref. Part 2E510D 2E511D
Ref. Part
No. Description Number Qty. Qty.
No. Description Number Qty.
5 Burner Head Body M50924-08 1
6 Barb Fitting M50820-02 2
7 Spark Plug HA3012 1
8 Wave Spring Washer 103409-01 1
Ref. Part 2E510D 2E511D
Ref. Part
No. Description Number Qty. Qty.
No. Description Number Qty.
5 Hex TPG Screw, 8-18 x 3/8" *M11084-38 2
6 W ire Assembly, Red 079010-31 1
7 W ire Assembly, White 079010-32 1
8 Fuel Valve Ground Wire M16841-62 1
(*) Standard hardware item, available locally.
11
®
Version B - For Reduction G016.J
Page 12
Dayton Operating Instructions and Parts Manual
3VG79
For Replacement Parts, call 1-800-323-0620
®
Dayton Portable
24 hours a day - 365 days a year
Please provide following information:
Oil-Fired Heaters
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Address parts correspondence to:
Grainger Parts Operations
P.O. Box 3074
1657 Shermer Road U.S.A.
Northbrook, IL 60065-3074
46
47
2
1
3
4
24
28
6
7
13
19
39
8
14
11
25
26
5
23
44
15
9
10
16
12
23
45
43
17
27
35
36
Figure 24 - Replacement Parts Illustration for Model 3VG79
30
31
12
20
21
22
38
41
29
18
37
40
32
42
33
34
Page 13
Dayton Operating Instructions and Parts Manual
Model 3VG79
Replacement Parts List
3VG79
Ref. Part
No. Description Number Qty.
1 Upper Shell 098511-227 1
2 Screw, #10-16 x 1/2" *100647-01 8
3 Combustion Chamber 098512-48 1
4 Photocell Bracket 099229-01 1
5 Screw, #6-32 x 3/8" *M10908-2 2
6 Photocell Assembly HA3019 1
7 Burner Head Assembly † 1
8 Screw, #10-16 x 1/2" *M11084-27 3
9 Fan 102042-01 1
10 Motor and Pump Assembly † 1
11 Rubber Bumper M50631 2
12 Motor Mounting Bracket 101206-01 1
13 Solid State Relay 097061-01 1
14 Screw, #8-18 x 1/2" *M15823-39 2
15 Hex Lock Nut, 1/4-20 *NTC-4C 2
16 Fan Guard 102756-01 1
17 Ignitor Kit 102482-01 1
18 Screw, #10-16 x 3/4" *M11084-29 2
19 Fuel Line M51345-03 1
20 Fuel Filter **M51150-01 1
21 Fuel Line Tube M51345-04 1
22 Rubber Bushing M10990-3 1
23 Airline M50814-03 1
24 Lower Shell 098511-228 1
Ref. Part
No. Description Number Qty.
25 Bushing M50104-03 2
26 Bushing M50104-01 2
27 Screw, #10-16 x 1/2" *M11084-27 6
28 Clip Nut M11271-8 8
29 Screw, #8-32 x 3/8" *M10908-14 1
30 Fuel Tank 098513-86 1
31 Fuel Cap (Includes Gasket) 097702-01 1
32 Flame-out Control HA3003 1
33 Strain Relief Bushing M11143-1 1
34 Power Cord 098219-19 1
35 Side Cover 102562-01AA 1
36 Screw, #10-16 x 1/2" *M11084-27 4
37 Terminal Board 099125-12 1
38 Rivet 099157-01 1
39 Wire Assembly (Red, 18") 079010-20 1
40 Wire Assembly (Red, 6") M16841-57 1
41 Drain Plug (Includes “o” Ring) M27417 1
42 Hex Nut, 3/8 - 27 *099177-01 1
43 Rubber Bushing 103523-01 1
44 Fuel Valve Assembly † 1
45 Foam Gasket 097785-04 2
46 Screw, Special 099230-01 2
47 Screw, #10-16 x 1/2" *M11084-27 2
(*) Standard hardware item, available locally.
(**)See MAINTENANCE KITS, page 14.
(†) Not available as an assembly, see pages 10 and 11.
13
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Dayton Operating Instructions and Parts Manual
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Dayton Portable
Oil-Fired Heaters
3VG79
Replacement Parts List for Handle and Wheel Group
Ref. Part
No. Description Number Qty.
1 Handles HA2204 2
2 Screw, #10-24 x 1 3/4" *M12345-33 8
3 Wheel Support Frame M12831-3 1
4 Hex Nut, #10-24 *NTC-3C 8
5 Wheel 079023-01 2
6 Cap Nut M28526 2
7 Axle M16801-2 1
∆ General Information Decal 098493-01 1
∆ Tradename Decal 097409-13 2
∆ Combustion Chamber
(*) Standard hardware item, available locally.
(∆) Not shown.
Accessories
Air Gauge Kit HA1180
Hang-up Thermostat kit HA1210
Flame-out Control/Photocell Tester HA1170
Fuel Tank Filter Screen HA2210
Wiring Diagram
Grounding Wire M9900-192 1
Part Numbers
Power Plug
120V/60Hz
Maintenance Kits
Flame-out Control HA3003
Spark Plug HA3012
Filter Kit (M11637, M12179, M12244-1, M51150-01) HA3017
Nozzle 100735-13
Rotor/Air Pump Kit (M22456-2, M22009, M8643-2) HA3005
Handle HA2204
Photocell HA3019
Pump Adjustment (M27694, M10993-1, M22997,
M8940) HA3020
1
2
3
5
6
4
7
Figure 25 - Handle and Wheel Assembly
Part Numbers
White
White
Motor
Green
Ignitor
Relay
White
Green/Yellow
Spark Plug
Red
Red
RedBlack
Figure 26 - Wiring Diagram
Terminal
Board
White
White
Red
Red
Green
Green
White
Blue
Photocell
Solenoid
Black
Blue
Valve
B
Flame-Out
Control
R
Reset
Button
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Dayton Operating Instructions and Parts Manual
Model 3VG79
Troubleshooting Chart
Symptom
Heater ignites, but flame-out control shuts
off heater after a short period of time
Heater will not ignite, but motor runs for a
short period of time
Never service heater while it is plugged in, operating, or hot.
Severe burns and electrical shock can occur.
Possible Cause(s)
1.Wrong pump pressure
2. Dirty air output, air intake and lint filters
3.Dirty fuel filter
4.Dirt in nozzle
5.Dirty photocell lens
6.Bad flame-out control
1.Wrong pump pressure
2.Carbon deposits on spark plug and/or
improper gap
3.Dirty fuel filter
4.Dirt in nozzle
5.Water in fuel tank
6.Bad fuel valve
Corrective Action
1. See Pump Pressure Adjustment, page 6
2.See Air Output, Air Intake and Lint
Filters, page 6
3.See Fuel Filter, page 7
4.See Nozzle, page 8
5.Clean photocell lens
6.Replace flame-out control
1. See Pump Pressure Adjustment, page 6
2.See Spark Plug, page 7
3.See Fuel Filter, page 7
4.See Nozzle, page 8
5.Drain and flush fuel tank with clean
kerosene. See Storing, Transporting, or
Shipping, page 9
6.See Fuel Valve, page 7
Motor does not start when heater is
plugged in, fan rotates slowly or does not
turn
High Voltage!
7.Electronic ignitor not
grounded
8.Bad electronic ignitor
9.Spark plug not oriented properly
1. Flame-out control not reset
2. Solid state relay not
allowed to reset
3. Binding pump rotor
15
7.Make sure electronic ignitor mounting is
tight
8.Replace electronic ignitor
9.See Spark Plug, page 7
1.Press flame-out control reset button
2.Wait two minutes before trying to
restart heater
3.If fan is hard to turn, see Pump Rotor,
page 8
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Dayton Operating Instructions and Parts Manual
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3VG79
Dayton Portable
Oil-Fired Heaters
Limited Warranty
Dayton One-Year Limited Warranty. Portable Oil-Fired heater, Models covered in this manual, are warranted by Dayton Electric Mfg.
Co. (Dayton) to the original user against defects in workmanship or materials under normal use for one year after date of purchase. Any
part which is determined to be defective in material or workmanship and returned to an authorized service location, as Dayton designates,
shipping costs prepaid, will be, as the exclusive remedy, repaired or replaced at Dayton’s option. For limited warranty claim procedures,
see PROMPT DISPOSITION below. This limited warranty gives purchasers specific legal rights which vary from jurisdiction to jurisdiction.
Limitation of Liability. To the extent allowable under applicable law, Dayton’s liability for consequential and incidental damages is
expressly disclaimed. Dayton’s liability in all events is limited to, and shall not exceed, the purchase price paid.
Warranty Disclaimer. Dayton has made a diligent effort to provide product information and illustrate the products in this literature
accurately; however, such information and illustrations are for the sole purpose of identification, and do not express or imply a warranty
that the products are merchantable, or fit for a particular purpose, or that the products will necessarily conform to the illustrations or
descriptions.
Except as provided below, no warranty or affirmation of fact, expressed or implied, other than as stated in “LIMITED WARRANTY” above
is made or authorized by Dayton.
Product Suitability. Many states and localities have codes and regulations governing sales, construction, installation, and/or use of
products for certain purposes, which may vary from those in neighboring areas. While Dayton attempts to assure that its products comply
with such codes, it cannot guarantee compliance, and cannot be responsible for how the product is installed or used. Before purchase and
use of a product, review the product applications and all applicable national and local codes and regulations, and be sure that the product,
installation, and use will comply with them.
Certain aspects of disclaimers are not applicable to consumer products; e.g., (a) some jurisdictions do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you; (b) also, some jurisdictions do not allow limitations on how long an implied warranty lasts, consequently the above limitation may not apply to you; and (c)
by law, during the period of this limited warranty, any implied warranties of merchantability or fitness for a particular purpose applicable to consumer products purchased by consumers, may not be excluded or otherwise disclaimed.
Prompt Disposition. Dayton will make a good faith effort for prompt correction or other adjustment with respect to any product which
proves to be defective within limited warranty. For any product believed to be defective within limited warranty, first write or call dealer
from whom product was purchased. Dealer will give additional directions. If unable to resolve satisfactorily, write to Dayton at address
below, giving dealer’s name, address, date and number of dealer’s invoice, and describing the nature of the defect. Title and risk of loss
pass to buyer on delivery to common carrier. If product was damaged in transit to you, file claim with carrier.
Manufactured for Dayton Electric Mfg. Co., 5959 W. Howard St., Niles, Illinois 60714 U.S.A.
Manufactured for Dayton Electric Mfg. Co.
Niles, Illinois 60714
16
103536-01
Rev. B
3/97
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Version B - For Reduction G016.J
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