Dayton 3VG81 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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3VG81

Dayton Propane
Construction Heater

Description

Dayton model 3VG81 is a 150,000 Btu/Hr propane construction heater with built-in
thermostat. This heater uses propane gas for combustion. It is primarily intended for
temporary heating of 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. 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

Figure 1 – Model 3VG81

instructions should use or
service this heater.

If you need assistance or
heater information such
as an instructions
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/CSA 2.14. 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.

Other standards govern the use of fuel gases
and heat producing products for specific
uses. Your local authorities can advise you
about these.

Form 5S3928

Printed in U.S.A.
03430
1002/213/VCPVP

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Version B - For Reduction G016.J

Dayton Operating Instructions and Parts Manual 3VG81

®

Dayton Propane
Construction Heater

3VG81 Specifications

Output Rating 150,000 Btu/Hr
Fuel Propane Vapor Only
Fuel Consumption 7.0 Pounds/Hour (1.6 Gallons/Hour)
Regulator Input Pressure Minimum: 10 Psig

Maximum: Tank Pressure

Regulator Output Pressure 12.5" WC (Factory Preset)
Manifold Pressure 9.8" WC (Factory Preset)
Ignition Electronic direct spark, D.S.I.
Ignitor Gap Minimum: 0.13"

Maximum: 0.15"

Temperature Control Built-In Thermostat
Air Flow 550 Cfm
Volts 120 Vac 60 Hz I Phase
Amps 2.2
Motor HP 1/8
Motor RPM 3,450
Dimensions 36
Heater Weight 27 Lb
Shipping Weight 35 Lb

1

/4"L x 20"H x 141/2"W

Product Identification

Handle

Hot Air Outlet
(Front)

Upper Shell

Fan Guard

General Safety Information

IMPORT ANT: 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.

Lower Shell

On/Off Switch

Inlet Connector

Figure 2 - Product Identification

Power
Cord

Thermostat
Knob

Hose/Regulator
Assembly

2

IMPORTANT: Not every possible circum-

stance 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.

Dayton Operating Instructions and Parts Manual

Model 3VG81

General Safety Information
(Continued)

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: 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. 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.

Make certain you

read and under­stand all Warnings. Keep this manual
for reference. It is your guide to safe
and proper operation of this heater.

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

• Install and use heater with care.
Follow all local ordinances and
codes. In the absence of local
ordinances and codes, refer to the
National Fuel Gas Code handbook
NFPA54/ANSI Z223.1 and the Natural
Gas Installation Code, CAN/CGA
B149.2. This instructs on the safe
storage and handling of flammable
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.

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

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

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

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

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

• This heater is equipped with a
thermostat. Heater may start at
anytime.

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

• Use only propane gas set up for
vapor withdrawal.

• Keep propane tank(s) below 100° F.

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

• Do not use heater below ground
level.

• 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.

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

• Inspect hose before each use of
heater. If highly worn or cut, replace
before using heater. Use the replace­ment hose assembly specified in this
manual.

• Minimum heater clearances from
combustibles:

Outlet: 8 Ft. Sides: 2 Ft.
Top: 6 Ft. Rear: 2 Ft.

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

• Keep children and animals away
from heater.

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

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

• Never move, handle, or service a hot,
operating, or plugged-in heater.
Severe burns may result. You must
wait 20 minutes after turning heater
off.

• To prevent injury, wear gloves when
handling heater.

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

• Do not use heater if altered.

• Never attach duct work to front or
rear of heater.

• 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.

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Version B - For Reduction G016.J