Dayton 3VH20 User Manual

Operating Instructions & Parts Manual

Dayton Operating Instructions and 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

Model 3VH20

property damage! Retain instructions for future reference.

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3VH20

Dayton Propane
Construction Heater

Description

Dayton Model 3VH20 heater is a 15,000 to 25,000 Btu/Hr construction heater. This
heater uses propane gas for combustion. It is primarily intended for outdoor use and the
temporary heating of well-ventilated buildings under construction, alteration, or repair.
This heater should never be used in occupied dwellings.

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
or service this heater.

If you need assistance or
heater information such
as an instruction
manual, labels, etc.

Figure 1 – Model 3VH20

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.

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 5S3930

Printed in U.S.A.
03430
0799/219/VCPVP

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Version B - For Reduction G016.J

Dayton Operating Instructions and Parts Manual

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Dayton Propane
Construction Heater

3VH20

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.

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 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 hose and factory preset
regulator provided with the heater.

• Use only propane gas set up for
vapor withdrawal. Before connecting
heater to propane tank, make sure
the heater regulator knob is in the
OFF position. Always connect and
operate heater in areas free of open
flames.

• For indoor and outdoor use. When
used indoors, use only in well-vented
areas. Provide at least 120-square­inches of fresh, outside air before
using heater. This heater produces
carbon monoxide, which is listed by
the State of California as a reproduc­tive toxin under Proposition 65.

• Do not use heater in occupied dwell­ings, sleeping quarters, campers, tents,
or any type of unvented or enclosed
area.

• Do not use heater as a cooking device.
Do not place objects on top of heater .

• 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 com­bustibles: Sides: 3 feet; Top: 6 feet.

• Keep heater at least six feet from
propane tank(s).

• Keep propane tank(s) below 100° F.

• 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.

• Operate heater on stable and level
surfaces only.

• Never block air inlet (top of base) or air
outlet (around top of shell) of heater.

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

• Never operate heater while unat­tended. Never run heater while asleep.

• 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
when not in use.

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Dayton Operating Instructions and Parts Manual

Model 3VH20

General Safety Information
(Continued)

• 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.

• Keep all connections and fittings
clean. Make sure propane tank valve
outlet is clean. Check the rubber O
ring on the heater inlet fuel connec­tor for damage before each use.
Replace if worn or damaged.

Theory of Operation

THE FUEL SYSTEM

The hose/regulator assembly attaches to
the propane gas supply. This provides fuel
to the heater.

THE IGNITION SYSTEM

The piezo ignitor lights the main burner.

THE AUTOMATIC CONTROL SYSTEM

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

NOTE: Because of the metal lubricant
used in this product, you may notice some
smoking upon initial start-up and shut
down. This condition is normal and should
not occur beyond the first several (5-10)
minutes of operation.

Product Identification

Shell

Hose/Regulator/Fuel
Gas Connector
Assembly

Piezo Ignitor
Button

Base

Top

Gas Inlet
Connector

Specifications

Output Minimum Fuel Maximum Fuel Size
Rating Btu/Hr Fuel Consumption Consumption L x W x H (Inches)

Figure 2 - Product Identification

Automatic
Control Valve
Button

15,000 to 25,000 Propane Vapor Only 0.17 Gallons/Hour 0.27 Gallons/Hour 11.9 x 13.8 x 13

0.70 Pounds/Hour 1.16 Pounds/Hour

Regulator Maximum Supply Minimum Supply Weight
Outlet Pressure Pressure to Regulator Pressure to Regulator (pounds)

15 psi Tank Pressure 40 psi (for purposes 4.7 (Heater)

of input adjustment) 6.1 (Shipping)

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