L.B. White Tradesman 400 Dual Fuel Manual

Attention
This heater has been tested and
evaluated by the CSA Group in
accordance with the requirements
of Standard ANSI Z83.7 • CSA 2.14
and is listed and approved as a
direct gas-fired forced-air
construction heater with application
for the temporary heating of build-
ings under construction, alteration,
or repair. The heater shall NOT
be used with ductwork. CHECK
WITH YOUR LOCAL FIRE SAFETY
AUTHORITY, YOUR LOCAL FUEL
GAS SUPPLIER, OR THE
L.B. WHITE COMPANY IF YOU
HAVE QUESTIONS REGARDING
APPLICATIONS.
This Owner’s Manual provides in-
structions for Tradesman propane-
vapor, natural gas and dual fuel
heaters. Instructions pertaining to
a specific model or gas configura-
tion are noted. Unless noted, the
information applies to all versions of
Tradesman heaters.
www.lbwhite.com
SCAN THIS
with your smartphone or
visit http://goo.gl/nvneR
to view maintenance
videos for L.B.White heaters.*
WORLD PROVIDER - INNOVATIVE HEATING SOLUTIONS
411 Mason Street, Onalaska, WI, U.S.A 54650 • 800-345-7200 • 608-783-5691 • 608-783-6115 (fax) • www.lbwhite.com
Congratulations!
You have purchased the finest portable forced air 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 [phone].
Tradesman
Standard and Ultra
Construction Heater
Model
CP170
CP400
CP170
CP400
Btu/h/kW
170,000/49.8
400,000/117.2
155,000/45.4
400,000/117.2
Fuel
Propane Vapor
Withdrawal
Natural Gas
Dual Fuel*
Owner’s Manual and Instructions
View this manual online at www.lbwhite.com
* Requires an app like QR Droid
for Android or for iPhone
SEE ASSEMBLY
INSTRUCTIONS
INSIDE
Please refer to important
elevation information on
inside cover.
North
American
Made
!
*

Tradesman Construction Heaters
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Owner’s Manual • Tradesman
2
TABLE OF CONTENTS
Heater Specifications...................................................................................................... 4
General Information........................................................................................................ 5
Safety Precautions ......................................................................................................... 6
General Installation Instructions ..................................................................................... 10
Propane Gas Supply Sizing............................................................................................ 12
Handle Assembly............................................................................................................ 13
Hose and Regulator Assembly....................................................................................... 13
Connecting Regulator to Gas Supply ............................................................................. 14
Height Adjustment (Tradesman 170).............................................................................. 14
Start-Up Instructions....................................................................................................... 15
Shut-Down Instruction .................................................................................................... 15
Gas Selector Valve......................................................................................................... 16
Variable Rate Valve ........................................................................................................ 15
Cleaning Instructions...................................................................................................... 16
Maintenance Instructions................................................................................................ 17
Service Instructions ........................................................................................................ 17
Motor, Fan, and Air Proving Switch ................................................................................ 18
Auto Reset Limit Switches.............................................................................................. 18
Igniter.............................................................................................................................. 19
Thermostat ..................................................................................................................... 20
Ignition Control ............................................................................................................... 20
Gas Pressure Checks..................................................................................................... 21
Burner Orifice LP & DF................................................................................................... 22
Troubleshooting Information........................................................................................... 23
Electrical Connection and Ladder Diagrams
Tradesman 170 Standard..................................................................................... 32
Tradesman 170 Ultra, and All Tradesman 400 ..................................................... 33
Heater Component Function .......................................................................................... 34
Parts Identification
Tradesman 170 Parts Schematic and Parts List .................................................. 35/36
Tradesman 400 Parts Schematic and Parts List .................................................. 37/38
Warranty Policy............................................................................................................... 40
Replacement Parts and Service..................................................................................... 40
WARNING
Standard products are manufactured to operate at optimum efficiency at elevations
between 0 and 2000 ft. (0-610m) above sea level.
If operated at higher elevations the product will not function correctly and may
function in an unsafe nature.
Products providing proper operation for alternate elevations may be available.
If you require a high elevation product, did not specify when ordering, and/or the
box this unit came in does not have an alternate altitude designation sticker please
contact technical support.

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3
WARNING
FIRE, BURN, INHALATION, AND
EXPLOSION HAZARD
■KEEP SOLID COMBUSTIBLES A SAFE
DISTANCE AWAY FROM THE HEATER.
■SOLID COMBUSTIBLES INCLUDE WOOD,
PAPER, OR PLASTIC 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
DEATH.
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 flam-
mable vapors and liquids in the vicinity of this
or any other appliance.
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 PERSONS WHO CAN READ, UNDERSTAND, AND FOLLOW THE INSTRUCTIONS
SHOULD USE OR SERVICE THIS HEATER.
■SAVE THIS OWNER’S MANUAL FOR FUTURE USE AND REFERENCE.
■OWNER’S MANUALS AND REPLACEMENT LABELS ARE AVAILABLE AT NO CHARGE. SEE
WEBSITE, OR FOR ASSISTANCE, CONTACT L.B. WHITE AT 1-800-345-7200.
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 POISON-
ING AND THEREFORE SERIOUS INJURY OR DEATH.
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.
WARNING
Cancer and reproductive harm.
See www.P65Warnings.ca.gov.

Tradesman Construction Heaters
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Owner’s Manual • Tradesman
4
Specifications
CP170 CP400 CP400 Dual Fuel
Propane Gas Natural Gas Propane Gas Propane Gas Natural Gas
Maximum Input (Btuh/kW) 170,000/49.8 155,000/45.4 400,000 / 117.2
Minimum Input (Btuh/kW) 125,000/36.6 250,000 / 73.3 175,000 /
51.3
Inlet Gas Supply
Pressure Acceptable
at the Gas Connec-
tion of the Heater
Max 11.1 in.
W.C./2.74
kPa
13.5 in.
W.C./3.36
kPa*
5.2
PSIG/35.74
kPa
1.5 PSIG/10.34 kPa
Min 11.1 in.
W.C./2.74
kPa
7.0 in.
W.C./1.74
kPa*
5.2
PSIG/35.74
kPa
1.5 PSIG/10.34 kPa
Burner Manifold Pressure 11.0 in.
W.C./2.74
kPa
5.5 in.
W.C./1.37
kPa
5.2
PSIG/35.74
kPa
1.5 PSIG/10.34 kPa
Fuel Consumption
Per Hour Max 7.89 lbs./3.57 kg 155 ft.³/4.39 m³ 18.5 lbs. / 8.39 kg 400 ft.³ / 11.33m³
Min 5.8 lbs./2.63
kg 125 ft.³/4.39 m³ 11.6 lbs. / 5.26 kg 175 ft.³ / 4.95 m³
Motor Characteristics 1/15 H.P. / 44.7 watts 1/5 H.P. / 149 watts
3,300 RPM
Ball Bearing
Electrical Supply
(Volts/Hz/Phase) 120/60/1
Amp Draw Starting 3.7 4.0
Continuous
Operation 1.0 1.3
Dimensions Inches 24 x 10 x 16 34.5 x 12.5 x 19.5
Centime-
ters 61 x 25.4 x 40.6 87.5 x 31.7 x 49.5
Minimum Safe
Distances
From Nearest
Combustible
Materials (feet/
meters)
TOP 6 / 1.83 7 / 2.43
SIDES 3 / 0.9 5 / 1.52
BACK 3 / 0.9 5 / 1.52
BLOWER
OUTLET 10 / 3.05 15 / 4.57
GAS
SUPPLY Propane Gas Supply - 6 ft./ U.S, 10 ft./3.04 m Canada Natural Gas Supply - N/A
* The gas connection for Tradesman 170 Natural Gas heaters is the inlet of the gas
regulator supplied with the heater.

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Owner’s Manual • Tradesman
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This Owner’s Manual includes all options and acces-
sories commonly used on this heater.
When calling for technical service assistance, or for
other specific information, always have model num-
ber, configuration number and serial number avail-
able. 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.
Contact your local L.B. White distributor or the L.B.
White Company, LLC for assistance, or if you have
any questions about the use of the equipment or its
application.
The L.B. White Company, LLC has a policy of con-
tinuous product improvement. It reserves the right to
change specifications and design without notice.
General Information

Tradesman Construction Heaters
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Owner’s Manual • Tradesman
6
Safety Precautions
WARNING
Air Quality Hazard
■Do not use this heater for heating human living quarters.
■Use of direct-fired heaters in the construction environment can result in exposure to levels of CO,
CO2, and NO2 considered to be hazardous to health and potentially life threatening.
■Do not use in unventilated areas.
■Know the signs of CO and CO2 poisoning
- Headaches, stinging eyes.
- Dizziness, disorientation.
- Difficulty breathing, feeling of being suffocated.
■Proper ventilation air exchange (OSHA 29 CFR 1926.57) to support combustions and maintain
acceptable air quality shall be provided in accordance with OSHA 29 CFR part 1926.154, ANSI A10.10
Safety Requirements for Temporary and Portable Space Heating Devices and Equipment used in the
Construction Industry or the Natural Gas and Propane Installation Codes CSA B149.1.
- Periodically monitor levels of CO, CO2, and NO2 existing at the construction site – at the
minimum at the start of the shift and after 4 hours.
- Provide ventilation air exchange, either natural or mechanical, as required to maintain
acceptable indoor air quality.
USA 8-Hr. Time weighted average Canada 8-Hr. Time weighted average
(OSHA 29 CFR 1926.55 App A) WorkSafe BC OHS Guidelines Part 5.1
and Ontario Workplaces Reg 833
CO 50 ppm 25 ppm
CO2 5,000 ppm 5,000 ppm
NO2 3 ppm (Reg 833)
USA – Ceiling Limit Canada STEL (15 minutes Reg 833/1 hr.
(Short Term Exposure Limit = 15 minutes) WSBC) WorkSafe BC OHS Guidelines part
5.1 and Ontario Workplaces Reg 833
CO 100 ppm
CO2 15,000 ppm (WSBC)
30,000 ppm (Reg 833)
NO2 5 ppm 1.0 ppm (WorkSafeBC)
5.0 ppm (Reg 833)
■Ensure that the flow of combustion and ventilation air exchange cannot become obstructed.
■As the building ‘tightens up” during the construction phases, ventilation may need to be increased.

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Propane gas and natural gas have man-made odor-
ants 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 chemi-
cal 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 col-
orless 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.
Fuel Gas Odor Odor Fading - No
Odor Detected

Tradesman Construction Heaters
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Owner’s Manual • Tradesman
8
■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 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!
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 instal-
lation, 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.
c. In the Commonwealth of Massachusetts, this
product must be installed by a gas fitter licensed by
the Commonwealth of Massachusetts.
2. All installations and applications of L.B. White
heaters must meet all relevant local, state and
national codes. Included are L.P. 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:
-- ANSI/NFPA 58, latest edition, Standard for
Storage and Handling of Liquefied Petroleum
Gas
-- ANSI Z223.1/NFPA 54, National Fuel Gas
Code
-- ANSI/NFPA 70, National Electrical Code.
-- CSA C22.1 Part 1, Standard Canadian Electri-
cal Code
-- CSA C22.2 No.3, Electrical Features of Fuel
Burning Equipment
3. Adequate ventilation air for combustion must be
provided.
4. We cannot anticipate every use which maybe
made of our heaters. Check with the local fire
safety authority if you have questions about
applications.
5. Once the heater has been lit, high surface and
exhaust temperatures can ignite clothing or burn
users who come too close to the heater. When
the heater is in operation, those working around
the heater should never touch the heater or come
within the clearances stated. Use extreme caution
when lighting the heater or adjusting heat levels.
6. Forced air heaters shall not be directed toward any
propane gas container within 20 feet (6.10 meters).
7. Do not wash the heater. Use only compressed air,
a soft brush or dry cloth to clean the interior of the
heater and it’s components.
8. Use only the regulator supplied with the heater.
The heater must be regulated at all times for
proper operation.
Attention - Critical
Points to Remember!

Tradesman Construction Heaters
Owner’s Manual • Tradesman
9
9. For safety, this heater is equipped with an auto
reset backflash switch, and depending on models,
an air proving switch. Never operate the heater
with any safety device that has been bypassed.
Do not operate this heater unless these features
are fully functioning.
10. 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.
11. 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 replacement
hose assembly shall be that specified by the
manufacturer. See parts list.
12. 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.
13. This heater should be inspected for proper
operation by a qualified service person before
each use and at least annually.
14. Always turn off the gas supply to the heater if the
heater is not going to be used.
15. This heater is equipped with a three-prong
(grounding) plug for your protection against
shock hazard and must be plugged directly into
a properly grounded three-prong receptacle.
Failure to use a properly grounded receptacle
can result in electrical shock, personal injury,
or death.
16. 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.
17. When the heater is to be stored indoors, the
connection between the propane gas supply con-
tainer and the heater must be disconnected. The
container must be stored in accordance with the
Standard for the Storage and Handling of Liquified
Petroleum Gases, ANSI/NFPA 58, or CSA B149.,
Natural Gas and Propane Gas Installation Code.
18. 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.
19. DO NOT attach any ducting to the heater’s hot- air
discharge, otherwise heater or property damage
may occur.

Tradesman Construction Heaters
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Owner’s Manual • Tradesman
10
heater due to wind action on the covering or
other material.
7. Insure that all accessories that ship with the
heater have been and installed.
8. Check all connections for gas leaks using ap-
proved 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.
-- 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.
General Installation Instructions
INSTALLATION INSTRUCTIONS
WARNING
Burn Hazard
Can cause property damage, severe injury or death.
To avoid dangerous accumulation of fuel gas, turn
off gas supply at the appliance service valve before
starting installation, and perform gas leak test after
completion of installation.
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. The heater must sit on its base and using a level,
be installed on a flat, level, and stable surface
when in operation and according to minimum
safe distances from combustible materials. Safe
distances are given on the heater dataplate and on
page 4 of this manual.
3. L.P Gas Installation Requirements
Ensure all L.P. gas containers are secured and
protected from people, vehicular traffic and
contact.
L.P. gas containers must be located on a
flat,level, and stable surface.
L.P. gas cylinders (100 lb. cylinders/tanks) must
be secured from tip-over.
Contact your local authorities, L.P. gas dealers, or
fire marshalls for specifics dealing with installation in
your area.
4. This heater is approved for indoor use only. The
heater shall be installed so it is not directly ex-
posed to water spray, rain, and /or dripping water.
5. 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.
6. Heaters used in the vicinity of combustible tar-
paulins, 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
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 dam-
age, personal injury or loss of life.