Dayton 3VG80 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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3VG80

Dayton Propane
Construction Heater

Description

Dayton Model 3VG80 heater is a variable 65,000, 85,000, and 100,000 Btu/Hr construc­tion heater. This heater uses propane gas for combustion. It is primarily intended for
temporary heating of well-ventilated buildings under construction, alteration, or repair.
This heater should only be used indoors but never in occupied dwellings. Products of

combustion are vented into the area being heated.

Unpacking

1. Remove all packing items applied to
heater for shipment. Keep plastic cover
caps (attached to inlet connector and
hose/regulator assembly) for storage.

2. Remove all items from carton.

3. Check all items for shipping damage. If
heater is damaged, promptly inform
dealer where you bought heater.

GENERAL HAZARD
WARNING

Failure to comply with
the precautions and
instructions provided
with this heater can
result in death, serious
bodily injury, and prop­erty loss or damage
from hazards of fire,
explosion, burn, as­phyxiation, carbon
monoxide poisoning,
and/or electrical shock.

Only persons who can
understand and follow
instructions should use

Figure 1 - Model 3VG80

or service this heater.
If you need assistance

or heater information
such as an instruction
manual, labels, etc.
contact the manufac­turer.

Fire,

burn,
inhalation, and explosion
hazard. Keep solid com­bustibles such as build­ing materials, paper or
cardboard, a safe dis­tance away from the
heater as recommended
by the instructions.
Never use the heater in
spaces which do or may
contain volatile or air­borne combustibles, or
products such as gaso­line, solvents, paint
thinner, dust particles,
or unknown chemicals.

Not for
home or

recreational vehicle use.

The heater is designed for use as a construc­tion heater under ANSI Z83.7/CGA 2.14.
Other standards govern the use of fuel gases
and heat producing products for specific
uses. Your local authorities can advise you
about these. The primary purpose of
construction heaters is to provide temporary
heating of buildings under construction,
alteration or repair, and to provide
temporary emergency heat. Properly used,
the heater provides safe economical heating.
Products of combustion are vented into the
area being heated.

We cannot foresee every use which may be
made of our heaters. Check with your local
fire safety authority if you have questions
about heater use.

Form 5S3929

Printed in U.S.A.
03430
1002/214/VCPVP

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Dayton Operating Instructions and Parts Manual 3VG80

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Dayton Propane
Construction Heater

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 heading,

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, oper­ating, and maintenance procedures or
practices will be found that, if not carefully
followed, MAY result in minor personal injury,
product or property damage.

IMPORTANT: Not every possible circum­stance that might involve a hazard can 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.

This product

contains and/or
generates chemicals know to the State
of California to cause cancer or birth
defects, or other reproductive harm.

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.

Propane Gas: Propane gas is odorless.
An odor-making agent is added to
propane gas. The odor helps you detect
a propane gas leak. However, the odor
added to propane gas can fade.
Propane gas may be present even
though no odor exists.

• Install and use

heater with care.
Follow all local ordinances and
codes. In the absence of local
ordinances and codes, refer to the
Standard for Storage and Handling
of Liquefied Petroleum Gas, ANSI/
NFPA 58 and the Natural Gas Installa­tion Code, CAN/CGA B149.2. This
instructs on the safe storage and
handling of propane gases.

• Use only the electrical voltage and
frequency specified on model plate.
The electrical connections and
grounding of the heater shall follow
the National Electric Code, ANSI/
NFPA 70 or the Canadian Electrical
Code, Part 1.

• Electrical grounding instructions —
This appliance is equipped with a
three-prong (grounding) plug for
your protection against shock hazard
and should be plugged directly into
a properly grounded three-prong
receptacle or extension cord.

• This product has been approved for
use in the Commonwealth of Massa­chusetts.

• Use only the hose and factory preset
regulator provided with the heater.

• Use only propane gas set up for
vapor withdrawal.

• Provide adequate ventilation. Before
using heater, provide at least a
three-square-foot (2,7 m2) opening of
fresh, outside air for each 100,000
Btu/Hr of rating.

• For indoor use only. Do not use
heater outdoors.

• Do not use heater in occupied
dwellings or in living or sleeping
quarters.

• Do not use heater in basement or
below ground level. Propane gas is
heavier than air. If a leak occurs,
propane gas will sink to the lowest
possible level and may accumulate to
explosive concentrations.

• Keep appliance area clear and free
from combustible materials, gaso­line, paint thinner, and other flam­mable vapors and liquids. Dust is
combustible. Do not use heater in
areas with high dust content.

• Minimum heater clearances from
combustible materials:

Outlet: 8 Ft. (2,40 m)
Sides: 2 Ft. (60 cm)
Top: 6 Ft. (1,80 m)
Rear: 2 Ft. (60 cm)

• Keep heater at least six feet (1.80 m)
from propane tank(s). Do not point
heater at propane tank(s) within 20
feet (6 m).

• Keep propane tank(s) below 100° F
(38˚ C).

• Check heater for damage before each
use. Do not use a damaged heater.

• Check hose before each use of
heater. If highly worn or cut, replace
with hose specified by manufacturer.

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Dayton Operating Instructions and Parts Manual

Model 3VG80

General Safety Information
(Continued)

• Locate heater on stable and level
surface if heater is hot or operating.

• Never block air inlet (rear) or air
outlet (front) of heater.

• Keep heater away from strong
drafts, wind, water spray, rain, or
dripping water.

• Never operate heater while unat­tended.

• Keep children and animals away
from heater.

• Never move, handle, or service a hot
or operating heater. Severe burns
may result. You must wait 15
minutes after turning heater off.

• To prevent injury, wear gloves when
handling heater.

• Never attach duct work to heater.

• Do not alter heater. Keep heater in
its original state.

• Do not use heater if altered.

• Turn off propane supply to heater
and unplug when not in use.

• Use only original replacement parts.
This heater must use design-specific
parts. Do not substitute or use
generic parts. Improper replacement
parts could cause serious or fatal
injuries.

Specifications

Output Rating 65,000 Btu/Hr 85,000 Btu/Hr 100,000 Btu/Hr
Fuel Propane Vapor Only Propane Vapor Only Propane Vapor Only
Fuel Consumption 3.0 Pounds/Hr (0.7 Gallons/Hr) 3.9 Pounds/Hr (0.93 Gallons/Hr) 4.6 Pounds/Hr (1.1 Gallons/Hr)
Hot Air Output (CFM Approx.) 475 475 475
Regulator Outlet Pressure Factory Preset Factory Preset Factory Preset
Manifold Pressure 10.0" WC 10.0" WC 10.0" WC
Max. Supply Pressure to Reg. Tank Pressure Tank Pressure Tank Pressure
Min. Supply Pressure to Reg. 10 psi 10 psi 10 psi

(for purposes of input adjustment)

Electric Input 120 V 60 Hz 120 V 60 Hz 120 V 60 Hz
Amps 2.9 2.9 2.9
Ignition Continuous Electronic Continuous Electronic Continuous Electronic
Ignitor Gap Minimum: 0.13" Minimum: 0.13" Minimum: 0.13"

Maximum: 0.15" Maximum: 0.15" Maximum: 0.15"

Motor RPM 3,200, 1/10 HP 3,200, 1/10 HP 3,200 , 1/10 HP
Heater Weight 18 Lb 18 Lb 18 Lb
Shipping Weight 24 Lb 24 Lb 24 Lb
Dimensions

261/4"L x 9"H x 151/2"W (Heater) 261/4"L x 9"H x 151/2"W (Heater) 261/4"L x 9"H x 151/2"W (Heater)

1

28

/2"L x 121/2"H x 17"W (Carton) 281/2"L x 121/2"H x 17"W (Carton) 281/2"L x 121/2"H x 17"W (Carton)

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Dayton Operating Instructions and Parts Manual 3VG80

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Dayton Propane
Construction Heater

Product Identification

Hot Air Outlet
(Front)

Handle

Control Knob

Inlet Connector

Fan Guard

Motor
Mount

Power Cord

Hose /Regulator
Assembly

Figure 2 - Product Identification

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Dayton Operating Instructions and Parts Manual

Model 3VG80

Theory of Operation

THE FUEL SYSTEM

The hose/regulator assembly attaches to
the propane gas supply. The propane gas
moves through the automatic control valve
and out the nozzle.

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.

Combustion Chamber

Clean
Heated
Air Out
(Front)

THE IGNITION SYSTEM

The spark transformer ignitor lights the
main burner.

THE AUTOMATIC CONTROL SYSTEM

This system causes the heater to shut
down if the flame goes out.

Nozzle

Fan

Cool Air
In (Back)

Power
Cord

Propane Supply

Propane gas and propane tank(s) must be
provided by the customer.

Use this heater only with a propane vapor
withdrawal supply system. See Chapter 5

of the Standard for Storage and Handling
of Liquefied Petroleum Gas, ANSI/NFPA 58.

Your local library or fire department will
have this booklet.

The amount of propane gas ready for use
from propane tanks varies. Two factors
decide this amount:

1. The amount of propane gas in tank(s)

2. The temperature of tank(s)

The chart below shows the number of 100
pound tanks needed to run this heater.

Temperature (ºF) Number of tanks,
at Tank 100,000 Btu/Hr

32° 2
20° 3
10° 3

0° 3

-10° Use Larger Tank

-20° Use Larger Tank

Air For Combustion

Air for

And Heating

Combustion and
Heating

Figure 3 - Cross Section Operational View

Fuel

Fuel

Hose/Regulator
Assembly

5

Less gas is vaporized at lower tempera­tures. You may need two or more 100
pound tanks or one larger tank in colder
weather. Your local propane gas dealer will
help you select the proper supply system.
The minimum surrounding air temperature
rating for each heater is -20°F (-29°C).

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