Dayton 3VH19 User Manual
Operating Instructions & Parts Manual 3VH19
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 3VH19
property damage! Retain instructions for future reference.
®
3VH19
Dayton Natural Gas
Construction Heater
Description
Dayton Model 3VH19 heater is 100,000 Btu/Hr construction heater. This heater uses
natural gas for combustion. It is primarily intended for the temporary heating of
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 valve inlet) 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.
4. Hose not included. User must supply
hose or flexible connector.
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 instructions
manual, labels, etc.
contact the manufacturer.
Figure 1 – Model 3VH19
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.
Other standards govern the use of fuel
gases and heat producing products for
specific uses. Your local authorities can
advise you about these.
Form 5S4125
© 1997 W.W. Grainger, Inc.
Printed in U.S.A.
03430
0997/230/VCPVP
1
104132-01
Rev. B
10/97
®
Version B - For Reduction G016.J
Dayton Operating Instructions and Parts Manual
®
Dayton Natural Gas
Construction Heater
3VH19
General Safety Information
Make certain you read and understand all
warnings. Keep these instructions for
reference. It is 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: Every possible circumstance
that might involve a hazard cannot 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: 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.
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
B149.2. This instructs on the safe
storage and handling of flammable
gases.
• Use only with natural gas. Do NOT
attempt to use with 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 below ground
level.
• 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.
• Minimum heater clearances from
combustible materials:
Sides: 6 Ft. Top: 5 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 before using heater.
• 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 (top of shell) of
heater.
• Keep heater away from strong
drafts, water spray, rain, or dripping
water.
• Keep children and animals away
from heater.
• Do NOT leave heater unattended.
• Never move, handle, or service a hot
or operating heater. Severe burns
may result. You must wait 20
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
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.
2
Dayton Operating Instructions and Parts Manual
Model 3VH19
3VH19
Theory of Operation
THE FUEL SYSTEM
The gas supply attaches to the heater by a
minimum 3/4 inch i.d. hose or flexible
connector. User must supply hose or
flexible connector. The length should be
no more than 10 feet long. The natural
gas moves through the regulator and out
the nozzle.
THE IGNITION SYSTEM
The piezo ignitor lights the pilot fuel
supply.
THE AUTOMATIC CONTROL SYSTEM
The automatic control valve shuts off the
heater if the flame goes out.
Product Identification
Shell
Nozzle
Main
Burner
Tube
Automatic Control
Valve Button
Top
Emitter
Ignitor
Electrode
Pilot Burner
Thermocouple
Regulator
Piezo Ignitor
Button
Base
Assembly
Figure 2 - Product Identification
Valve
Inlet
Specifications
Model Rating Btu/Hr Fuel Consumption LxWxH(Inches) (pounds) Manifold Pressure
3VH19 100,000 Natural 100 Cubic Feet/Hour 16 x 16 x 29.5 23 (Heater) 4" w.c.
Maximum Supply Minimum Supply
Pressure to Regulator Pressure to Regulator
1/2 PSI 6" w.c.
Output Fuel Size Weight
Gas Only 27 (Shipping)
3
Version B - For Reduction G016.J
®
Dayton Operating Instructions and Parts Manual
®
Dayton Natural Gas
Construction Heater
3VH19
Natural Gas Supply
The user must furnish the natural gas
supply and the connections to the heater.
Regulate the natural gas supply down
from a minimum 6 inches water column to
a maximum of 1/2 PSI. The natural gas
supply capacity should be able to supply a
minimum of 100 cubic feet of gas at
pressure for each heater connected to the
system.
Consult your natural gas supplier for
proper sizing of the natural gas supply
lines.
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.
Ventilation
Provide at least a
3-square-foot
opening of fresh, outside air while
running heater. If proper fresh, outside
air ventilation is not provided, carbon
monoxide poisoning can occur. Provide
proper fresh, outside air ventilation
before running heater.
FRESH OUTSIDE AIR OPENING REQUIREMENTS
Heater Size Square feet opening
100,000 Btu/Hr 3.0
Installation
Review and
understand the
warnings in the Safety Information
Section, page 2. They are needed to
safely operate this heater. Follow all
local codes when using this heater.
Test all gas piping
and connections
for leaks after installation or servicing.
Never use an open flame to check for a
leak. Apply a mixture of liquid soap
and water to all joints. Bubbles forming
show a leak. Correct all leaks at once.
1. Provide natural gas supply system.
2. Install plumbing to a low pressure
natural gas source. The source must be
regulated to 1/2 PSI maximum. The
plumbing must be a minimum 3/4 inch
i.d. hose or flexible connector not over
10 feet long.
3. Connect the hose to the heater at the
1/2 inch SAE flare fitting at the valve
inlet. Tighten all fittings with a wrench.
Flare
Fitting
Hose
Figure 3 - Hose and Valve Inlet
4. Open natural gas supply valve slowly.
5. Check all connections for leaks.
Never use an open
flame to check for
a leak. Apply a mixture of liquid soap
and water to all joints. Bubbles
forming show a leak that must be
corrected. Correct all leaks at once.
6. Close natural gas supply valve.
Operation
Review and
warnings in the Safety Information
Section. They are needed to safely
operate this heater. Follow all local
codes when using this heater.
TO START HEATER
1. Follow all installation, ventilation, and
safety information.
2. Locate heater on stable and level
surface. Make sure strong drafts do
not blow on heater.
3. Open gas supply slowly.
4. Turn control valve knob 1/4 turn to left
to PILOT Position (see Figure 4).
Figure 4 - PILOT Position
5. Push and hold in control valve knob
while pushing red piezo ignitor button.
Ignitor may have to be pushed again (3
to 8 times) until pilot lights.
NOTE: If hose is filled with air, allow 20
seconds for gas to reach pilot before
pushing ignitor button.
6. After pilot lights, keep control valve
knob depressed for at least 30
seconds, then release.
7. If pilot light goes out, repeat steps 4
through 6.
understand the
PILOT
ON
OFF
FROM “PILOT” POSITION
SLIGHT PUSH TO
TURN OFF
FULL PUSH TO
LIGHT
OFFON
4
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