Dayton 3VH22 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 3VH22

property damage! Retain instructions for future reference.

®

3VH22

Dayton Propane
Construction Heater

Description

Dayton Model 3VH22 heater is a 40,000 to 80,000 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
this heater.

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

Figure 1 – Model 3VH22

turer.

Not for
home or

recreational vehicle use.

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.

The heater is designed for use as a
construction heater in accordance with
ANSI Z83.7/CGA 2.14. Other standards
govern the use of fuel gases and heating
products for specific uses. Your local
authority can advise you about these. The
primary purpose of construction heaters is
to provide temporary heating of buildings
under construction, alteration or repair.
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 5S3931

Printed in U.S.A.
03430
0799/220/VCPVP

1

103918-01
Rev. D
03/00

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Version B - For Reduction G016.J

Dayton Operating Instructions and Parts Manual

®

Dayton Propane
Construction Heater

3VH22

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
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.

• Approved by the New York City Fire
Department under Certificate of
Approval #4953. To be used only at
construction site with applicable
New York City Codes, Regulations,
Rules, Directives, Permits, etc.

• 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 2.5­square-foot opening of fresh,
outside air. 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 basement or
below ground level. Propane gas is
heavier than air. If a leak occurs,
propane gas may 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.

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

• Not intended for use on finished
floors.

• Never block air inlet (bottom of
shell) 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.

• 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.

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Dayton Operating Instructions and Parts Manual

Model 3VH22

General Safety Information
(Continued)

• 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.

• 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.

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.

Product Identification

Thermocouple

Piezo Ignitor
Button

Hose/Regulator
Assembly

Figure 2 - Product Identification

Shell

Ignitor
Electrode

Burner
Tube

Top

Valve
Inlet

OFF

LO

HI

MED

Base

Control
Knob

Specifications

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

40,000 to 80,000 Propane 0.44 Gallons/Hour 0.87 Gallons/Hour 20 x 15 x 16 13 (Heater)

Vapor Only 1.86 Pounds/Hour 3.71 Pounds/Hour 16 x 15 x 20 17 (Shipping)

Maximum Supply Minimum Supply Min. Temperature Manifold Pressure Ignitor
Pressure to Regulator Pressure to Regulator Surrounding Air (Inches of Water Column) Gap (Inches)

200 psi 20 psi (for purposes -20ºF (-29ºC) 18 (High) 0.195

of input adjustment) 23.8 (Low)

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Version B - For Reduction G016.J

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