L.B. White 320 Manual

Propane Vapor
Withdrawal
Congratulations!
You have purchased the finest convection construction heater available.
Your new L.B. White heater incorporates the benefits from the most experienced
manufacturer of heating products using state-of-the-art technology.
We, at L.B. White, thank you for your confidence in our products and
welcome any suggestions or comments you may have...call us, toll-free,
at 608-783-5691.
Owner's Manual and Instructions
“Norseman” Heavy Duty Convection Construction Heaters
View this manual online at www.lbwhite.com
ATTENTION ALL USERS
This heater has been tested and evaluated by C.S.A. International in accordance with
Standard ANSI Z83.7CSA 2.14 and is listed and approved as a direct fired vertical
convection construction heater for use on combustible floors. This heater is
intended for use as a portable, temporary heater for buildings under construction,
alteration, or repair. If you are considering using this product for any application
other than its intended use, then please contact your fuel gas supplier, or the
L.B. White Co., Inc.
MODELS OUTPUT (kW) FUEL
320 58.6
Certification by:
150-29461
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WARNING
Fire and Explosion Hazard
■Not for home or recreational vehicle use.
■Installation of this heater in a home or
recreational vehicle may result in a fire or
explosion.
■Fire or explosions can cause property
damage or loss of life.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of
this or any other appliance.
WARNING
Fire and Explosion Hazard
■Keep solid combustibles a safe distance
away from the heater.
■Solid combustibles include wood or paper
products, building materials and dust.
■Do not use the heater in spaces which
contain or may contain volatile or airborne
combustibles.
■Volatile or airborne combustibles include
gasoline, solvents, paint thinner, dust
particles or unknown chemicals.
■Failure to follow these instructions may
result in a fire or explosion.
■Fire or explosions can lead to property
damage, personal injury or loss of life.
GENERAL HAZARD WARNING
■Failure to comply with the precautions and instructions provided with this heater, can result in:
— Death
— Serious bodily injury or burns
— Property damage or loss from fire or explosion
— Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning
— Electrical shock
■Read this Owner’s Manual before installing or using this product.
■Only properly-trained service people should repair or install this heater.
■Save this Owner’s Manual for future use and reference.
■Owner’s Manuals and replacement labels are available at no charge. For assistance, contact
L.B. White at 608-783-5691.
WARNING
■Proper gas supply pressure must be provided to the inlet of the heater.
■Refer to data plate for proper gas supply pressure.
■Gas pressure in excess of the maximum inlet pressure specified at the heater inlet can cause
fires or explosions.
■Fires or explosions can lead to serious injury, death, or building damage.
■Gas pressure below the minimum inlet pressure specified at the heater inlet may cause
improper combustion.
■Improper combustion can lead to asphyxiation or carbon monoxide poisoning and therefore
serious injury or death.
2

This Owner's Manual includes all options and accessories
commonly used on this heater. However, depending on the
configuration purchased, some options and accessories
may not be included.
When calling for technical service assistance, or for other
specific information, always have model number,
configuration number and serial number available. This
information is contained on the dataplate.
This manual will instruct you in the operation and care of
your unit. Have your qualified installer review this manual
with you so that you fully understand the heater and how it
functions.
The gas supply line installation, installation of the heater,
and repair and servicing of the heater requires continuing
expert training and knowledge of gas heaters and should
not be attempted by anyone who is not so qualified. See
page 6 for definition of the necessary qualifications.
Contact your local L.B. White distributor or the L.B. White
Co., Inc. for assistance, or if you have any questions about
the use of the equipment or its application.
The L.B. White Co., Inc. has a policy of continuous product
improvement. It reserves the right to change specifications
and design without notice.
SECTION PAGE
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Burner and Igniter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Hose and Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Service Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Burner Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Pilot Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Thermocouple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Igniter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Parts Identification
Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Table of Contents
General Information
3

Maximum Input (kW) 58.6
1456.6
kP
46 x 33 x 61
TOP TO CEILING 1.78 m
SIDES 1.22 m
FUEL
CONTAINER
-29°C
13.6
15.4
SPECIFICATIONS 320
Propane
Gas
Model
Ventilation Air Required
to Support Combustion (m3/hr)
Dimensions (Cm)
L x W x H
Minimum Safe Distances From
Nearest Combustible Materials
Fuel Consumption Per Hour
Inlet Gas Supply
Pressure Acceptable
at the Inlet of the
Pilot Safety Control Valve (KPa)
MAX.
MIN.
158
4
Heater Specifications
1.83 m
158
4.2 Kg
Fuel Type
Minimum Ambient Temperature in
Which Heater May Be Used
Net Weight (Kg)
Shipping Weight (Kg)

Propane gas and natural gas have man-made odorants added specifically for detection of fuel gas leaks.
If a gas leak occurs, you should be able to smell the fuel gas.
THAT’S YOUR SIGNAL TO GO INTO IMMEDIATE ACTION!
■Do not take any action that could ignite the fuel gas. Do
not operate any electrical switches. Do not pull any
power supply or extension cords. Do not light matches
or any other source of flame. Do not use your
telephone.
■Get everyone out of the building and away from the area
immediately.
■Close all propane gas tank or cylinder fuel supply
valves, or the main fuel supply valve located at the
meter if you use natural gas.
■Propane gas is heavier than air and may settle in low
areas. When you have reason to suspect a propane
leak, keep out of all low areas.
■Use your neighbor’s phone and call your fuel gas
supplier and your fire department. Do not re-enter the
building or area.
■Stay out of the building and away from the area until
declared safe by the firefighters and your fuel gas
supplier.
■FINALLY, let the fuel gas service person and the
firefighters check for escaped gas. Have them air out
the building and area before you return. Properly
trained service people must repair the leak, check for
further leakages, and then relight the appliance for you.
■Some people cannot smell well. Some people cannot
smell the odor of the man-made chemical added to
propane or natural gas. You must determine if you can
smell the odorant in these fuel gases.
■Learn to recognize the odor of propane gas and natural
gas. Local propane gas dealers will be more than
happy to give you a scratch and sniff pamphlet. Use it
to become familiar with the fuel gas odor.
■Smoking can decrease your ability to smell. Being
around an odor for a period of time can affect your
sensitivity to that particular odor.
■The odorant in propane gas and natural gas is colorless
and the intensity of its odor can fade under some
circumstances.
■If there is an underground leak, the movement of gas
through the soil can filter the odorant.
■Propane gas odor may differ in intensity at different
levels. Since propane gas is heavier than air, there may
be more odor at lower levels.
■Always be sensitive to the slightest gas odor. If you
continue to detect any gas odor, no matter how small,
treat it as a serious leak. Immediately go into action as
discussed previously.
5
Safety Precautions
FUEL GAS ODOR
ODOR FADING -- NO ODOR DETECTED
ATTENTION -- CRITICAL POINTS TO REMEMBER!
■Propane gas has a distinctive odor. Learn to recognize
these odors. (Reference Fuel Gas Odor and Odor
Fading sections above.
■ If you have not been properly trained in repair and service
of propane gas and natural gas fueled heaters then do
not attempt to light heater, perform service or repairs, or
make any adjustments to the heater on the propane gas
fuel system.
■Even if you are not properly trained in the service and
repair of the heater, ALWAYS be consciously aware of
the odors of propane gas and natural gas.
■A periodic sniff test around the heater or at the
heater’s joints; i.e. hose, connections, etc., is a good
safety practice under any conditions. If you smell even
a small amount of gas, CONTACT YOUR FUEL GAS
SUPPLIER IMMEDIATELY. DO NOT WAIT!
WARNING
■Do not use this heater for heating human living
quarters.
■Do not use in unventilated areas.
■The flow of combustion and ventilation air must not be
obstructed.
■Proper ventilation air must be provided to support the
combustion air requirements of the heater being used.
■Refer to the specification section of the heater’s
Owner’s Manual, heater dataplate, or contact the L.B.
White Company to determine combustion air ventilation
requirements of the heater.
■Lack of proper ventilation air will lead to improper
combustion.
■Improper combustion can lead to carbon monoxide
poisoning leading to serious injury or death. Symptoms
of carbon monoxide poisoning can include headaches,
dizziness and difficulty in breathing.
Asphyxiation Hazard

1. Do not attempt to install, repair, or service this heater
or the gas supply line unless you have continuing
expert training and knowledge of gas heaters.
Qualifications for service and installation of this
equipment are as follows:
a. To be a qualified gas heater service person, you
must have sufficient training and experience to
handle all aspects of gas-fired heater installation,
service and repair. This includes the task of
installation, troubleshooting, replacement of
defective parts and testing of the heater. You
must be able to place the heater into a continuing
safe and normal operating condition. You must
completely familiarize yourself with each model
heater by reading and complying with the safety
instructions, labels, Owner’s Manual, etc., that is
provided with each heater.
b. To be a qualified gas installation person, you must
have sufficient training and experience to handle
all aspects of installing, repairing and altering gas
lines, including selecting and installing the proper
equipment, and selecting proper pipe and tank
size to be used. This must be done in accordance
with all local, state and national codes as well as
the manufacturer’s requirements.
2. All installations and applications of L.B. White heaters
must meet all relevant local, state and national
codes. Included are propane gas, natural gas,
electrical, and safety codes. Your local fuel gas
supplier, a local licensed electrician, the local fire
department or similar government agencies, or your
insurance agent can help you determine code
requirements.
Also refer to:
-- CSA B149.1, Natural Gas and Propane
Installation Code.
3. We cannot anticipate every use which maybe made of
our heaters. Check with the local fire safety authority
if you have questions about applications.
4. The heater shall be installed so that it is not directly
exposed to water spray, rain, or dripping water.
5. Do not locate fuel gas containers or fuel supply
hoses anywhere near the heat outlet of the heater.
6. Do not block air intakes or discharge outlets of the
heater. Doing so may cause improper combustion or
damage to heater components leading to property
damage.
7. The hose assembly shall be visually inspected on a
daily basis after heater relocation and when the
heater is in use. If it is evident there is excessive
abrasion or wear, or if the hose is cut, it must be
replaced prior to the heater being put into operation.
The hose assembly shall be protected from building
materials, and contact with hot surfaces during use.
The hose assembly shall be that specified by the
manufacturer. See parts list.
8. Check for gas leaks and proper function upon heater
installation, when relocating, and after servicing.
Refer to leak check instructions within installation
section of this manual.
9. This heater should be inspected for proper operation
by a qualified service person before each use and at
least annually.
10. Always turn off the gas supply to the heater if the
heater is not going to be used in the heating of the
work space.
11. If gas flow is interrupted and flame goes out, do not
relight the heater until you are that all gas that may
have accummulated has cleared away. In any event,
do not relight the heater for at least 5 minutes.
12. Minimum propane gas supply cylinder size to be used
shall be 100 pounds when using a cylinder supply
system. The system must be arranged to provide
vapor withdrawal from the operating cylinder.
13. When the heater is to be stored indoors, the
connection between the propane gas supply
cylinder(s) and the heater must be disconnected and
the cylinder(s) removed from the heater and stored in
accordance with CSA B149.1, Natural Gas and
Propane Installation Code.
14. Propane gas supply containers have left handed
threads. Always use the appropriate wrench to make
a connection to tighten or loosen the P.O.L. fitting at
the cylinders’ gas supply valve.
6

1. Read all safety precautions and follow L. B. White
recommendations when installing this heater. If
during the installation or relocating of heater, you
suspect that a part is damaged or defective, call a
qualified service agency for repair or replacement.
2. Make sure the heater is properly installed before use.
Observe and obey all minimum safe distances of the
heater to the nearest combustible materials. Safe
distances are given on the heater dataplate and on
page 4 of this manual.
3. The heater is approved for indoor use only.
4. The heater’s gas pressure regulator (with pressure
relief valve) must be protected from adverse weather
conditions (rain, ice, snow) as well as from building
materials (tar, concrete, plaster, etc.) which can affect
safe operation and could result in property damage or
injury.
5. Heaters used in the vicinity of combustible tarpaulins,
canvas, plastics, wind barriers, or similar coverings
shall be located at least 10 feet from the coverings.
The coverings shall be securely fastened to prevent
ignition or upsetting of the heater due to wind action
on the covering or other material.
6. A qualified service agency must check for proper
operating gas pressure upon installation of the
heater.
7. Light according to instructions on heater or within
owner's manual.
8. Make sure the heater has the proper gas regulator for
the application. A regulator must be connected to the
gas supply so that gas pressure at the inlet to the gas
valve is regulated within the range specified on the
dataplate at all times. Contact your gas supplier, or
the L.B. White Co., Inc. if you have any questions.
9. This heater is configured for use for propane gas
vapor withdrawal only. Do not use the heater in a
propane gas liquid withdrawal system or application.
If you are in doubt, contact the L.B. White Co., Inc.
10. Take time to understand how to operate and maintain
the heater by using this Owner’s Manual. Make sure
you know how to shut off the gas supply to the
building and also to the individual heater. Contact
your fuel gas supplier if you have any questions.
11. Any defects found in performing any of the service or
maintenance procedures must be eliminated and
defective parts replaced immediately. The heater
must be retested by properly qualified service
personnel before placing the heater back into use.
12. Check all connections for gas leaks using approved
gas leak detectors. Gas leak testing is performed as
follows:
-- Check all pipe connections, hose connections,
fittings and adapters upstream of the gas
control with approved gas leak detectors.
-- In the event a gas leak is detected, check the
components involved for cleanliness and
proper application of pipe compound before
further tightening.
-- Furthermore tighten the gas connections as
necessary to stop the leak.
-- After all connections are checked and any
leaks are stopped, turn on the main burner.
-- Stand clear while the main burner ignites to
prevent injury caused from hidden leaks that
could cause flashback.
-- With the main burner in operation, check all
connections, hose connections, fittings and
joints as well as the gas control valve inlet and
outlet connections with approved gas leak
detectors.
-- If a leak is detected, check the components
involved for cleanliness in the thread areas
and proper application of pipe compound
before further tightening.
-- Tighten the gas connection as necessary to
stop the leak.
-- If necessary, replace the parts or components
involved if the leak cannot be stopped.
-- Ensure all gas leaks have been identified and
repaired before proceeding.
7
Installation Instructions
GENERAL
WARNING
Fire and Explosion Hazard
■Do not use open flame (matches, torches, candles,
etc.) in checking for gas leaks.
■Use only approved leak detectors.
■Failure to follow this warning can lead to fires or
explosions.
■Fires or explosions can lead to property damage,
personal injury or loss of life.

TABS
ELECTRODE LEAD
HOLE IN
BAFFLE
BURNER HOLD
DOWN BOLT
HOSE
REGULATOR
PROPANE GAS SUPPLY
CONTAINER VALVE
TO HEATER
8
HOSE AND REGULATOR ASSEMBLY
1. Always use approved pipe thread compound suitable
for use with propane gas or natural gas on the
threaded connections.
2. Assemble the components together according to the
figure and tighten all connections securely.
FIG. 2
BURNER AND IGNITER ASSEMBLY
1. Remove hex bolt from underside of burner.
2. Position pre-assembled burner and gas control into
case assembly of heater:
a. Locate burner head between tabs in base.
b. Align burner mounting holes in base and baffle
with tapped hole in burner casting.
3. Fasten burner to base using bolt removed in Step 1.
Tighten securely.
4. Connect electrode lead to igniter terminal.
FIG. 1

IGNITER BUTTON
PILOT BUTTON
9
1. Close manual main burner valve on heater.
2. Slowly open the propane gas supply container valve.
3. Fully depress the button on the pilot safety control
valve while pushing the igniter button.
4. Keep the pilot button depressed for about 30
seconds to allow the thermocouple to warm up.
5. Open the manual main burner valve located between
the pilot safety control and burner.
FIG. 3
ATTENTION
■On new installations it will take a short time for gas to
purge out any air in the pilot line and hose before the
pilot may be lit.
A. To properly shut heater down after normal use, or
when further use is anticipated:
-- Close manual main burner valve on heater.
B. To properly shut heater down for storage, or when
further use is not anticipated:
1. Close propane gas supply container valve. Allow
heater to burn off remaining gas in its hose.
2. Close manual main burner valve on heater.
3. Disconnect the heater from its gas supply.
Shut-Down Instructions
WARNING
Fire or Explosion Hazard
■Use only your hand to depress the gas control button.
Never use any tools.
■If the button will not depress by normal hand pressure,
the control should be replaced by a qualified service
person.
■Force or attempted repair may result in a fire or
explosion causing property damage, severe injury, or
death.
1. Before cleaning, close all gas supply valves.
2. The heater should have dirt or dust removed
periodically:
a. Before each use give the heater a general
cleaning using compressed air, a soft brush, or
dry rag, on its case and internal components.
b. At least once a year, give the heater a thorough
cleaning. At this time, remove the burner
assembly and brush and/or blow off the burner
and related components.
WARNING
Do not use a pressure washer, water, or liquid cleaning
solution on any gas controls. Use of a pressure washer,
water, or liquid cleaning solution on the control
components can cause severe personal injury or
property damage due to water and/or liquids:
* On gas control valves causing corrosion which
can result in gas leaks and fire or explosion from
the leak.
Clean all components of the heater with pressurized air, a
dry brush or a dry cloth.
Cleaning Instructions
WARNING
Fire, Burn, and Explosion Hazard
■This heater contains components used in the gas management, and safety systems.
■Such components may become inoperative or fail due to dust, dirt, wear and aging.
■Periodic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or property
damage.
Start-Up Instructions