Dayton 3VG78 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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3VG78

Dayton Natural Gas
Construction Heater

Description

Dayton Model 3VG78 natural gas construction heater is a 150,000 Btu/Hr heater with
built-in thermostat. This heater uses only natural 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) 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 or
service this heater.

Figure 1 – Model 3VG78

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. 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 5S4250

Printed in U.S.A.
03430
0502/079/VCPVP

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Version B - For Reduction G016.J

Dayton Operating Instructions and Parts Manual 3VG78

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Dayton Natural Gas
Construction Heater

Specifications

Output Rating ........................................150,000 Btu/Hr

Fuel ......................................................... Natural Gas

Fuel Consumption ................................. 146 Cubic Ft/Hr (Vapor Only)

Hot Air Output (CFM Approx) .............. 550

Motor ..................................................... 3,430 RPM

Electric Input ..........................................120V/60H, 1/8 HP

Amperage ..............................................2.2

Internal Regulator Output Pressure ....4" WC (Factory Preset)

Maximum Supply Pressure to Heater.. 1/2 psi
Minimum Supply Pressure to Heater .. 5" WC

Gas Inlet Connection ............................. 1/2" SAE Flare

Ignition ...................................................Direct spark, interrupted type

Net Weight............................................. 24 Lb

Shipping Weight ................................... 35 Lb

Ignitor Gap (Inches) ..............................Minimum: 0.13" Maximum: 0.15"

Temperature Control ............................. Built-In Thermostat

Dimensions ............................................ 36

1

/4"L x141/2"W x 20"H

Product Identification

Hot Air Outlet
(Front)

Lower Shell

Figure 2 - Product Identification

Upper Shell

Handle

Fan Guard

Thermostat
Knob

On/Off Switch

1/2" Inlet Connector

Power Cord

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, operat-

ing, and maintenance procedures or
practices will be found that, if not
carefully followed, MAY 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.

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Dayton Operating Instructions and Parts Manual

Model 3VG78

General Safety Information
(Continued)

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.

Natural Gas: Natural gas has a distinc­tive odor. This odor helps you detect a
natural gas leak. However, the odor
may fade. Natural 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 National Fuel
Gas Code handbook NFPA54/ANSI
Z223.1 and the Natural Gas Installa­tion Code, CAN/CGA B149.1. 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.

• 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 natural gas. Do not attempt
to operate on LP gas.

• 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. This heater produces carbon
monoxide, which is listed by the
State of California as a reproductive
toxin under Proposition 65.

• 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 a 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
combustibles:

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

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

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

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

• Keep children and animals away
from heater.

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

• 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 natural gas 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.

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Version B - For Reduction G016.J