Tradesman 170 Portable Forced Air
Owner's Manual and Instructions
Tradesman 170 and Tradesman 170 Ultra Construction Heaters
MODEL
OUTPUT (Btuh)
CP170
FUEL
170,000
Propane Vapor
Withdrawal
155,000
Natural Gas
Certification by:
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 (800) 345-7200.
ATTENTION ALL USERS
This heater has been tested and evaluated by C.S.A. International 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 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.
150-27724
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 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 poisoning 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.
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.
2
WARNING
Fire 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 loss of life.
Table of Contents
SECTION
PAGE
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation and Assembly Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Propane Gas Supply Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Handle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Hose and Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Connecting Regulator to Propane Gas Supply Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Variable Rate Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Service Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Motor, Fan, and Air Proving Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Auto Reset Limit Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Variable Rate Valve and Gas Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Igniter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Burner Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Ignition Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Electrical Connection and Ladder Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Parts Identification
Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
General Information
This Owner's Manual includes all options and accessories
commonly used on this heater.
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.
3
Heater Specifications
SPECIFICATIONS
Model
CP170
Propane
Gas
Fuel Type
Maximum / Minimum Input (BTUH)
Burner Manifold Pressure (in. W.C.)
Inlet Gas Supply
Pressure Acceptable at
the Gas Connection of the
Heater. (in. W.C.)
Natural
Gas
170,000 /125,000
155,000/125,000
11.0
4.9
MAX.
11.1
13.5
MIN.
11.1
7.0
Fuel Consumption Per Hour
7.87 lbs.
155 cu. ft.
Sleeve Bearing
Motor Characteristics
1/15 H.P., 3,200 RPM
Electrical Supply
(Volts/Hz/Phase)
115/60/1
STARTING
Amp Draw
3.7
CONTINUOUS
OPERATION
2.14
Dimensions (Inches)
LxWxH
Minimum Safe
Distances From
Nearest
Combustible
Materials (feet)
24 x 9 x 16
TOP
SIDES
BACK
BLOWER
OUTLET
GAS SUPPLY
6
3
3
10
6
N/A
.
.
4
`
Safety Precautions
WARNING
Asphyxiation Hazard
■ Do not use this heater for heating human living
quarters.
■ Lack of proper ventilation air will lead to improper
combustion.
■ Do not use in unventilated areas.
■ Improper combustion can lead to carbon monoxide
poisoning leading to serious injur y or death.
Symptoms of carbon monoxide poisoning can include
headaches, dizziness and difficulty in breathing.
■ 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.
FUEL GAS ODOR
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.
ODOR FADING -- NO ODOR DETECTED
■ 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.
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.
■ 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.
■ 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.
■ 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!
5
WARNING
Burn Hazard
■ High surface and discharge temperatures.
■ Do not touch the heater or come within safe
clearances given on dataplate.
■ Use extreme caution when lighting the heater or
adjusting heat levels.
■ Failure to follow this warning and come too close to
the heater can result in burns or ignition of clothing.
■ Burns cause serious injury or death.
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.
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 depar tment 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.
3. Adequate ventilation air for combustion must be
provided in accordance with OSHA 29 CFR 1926.154,
Temporary Heating Devices, and ANSI A10.10, Safety
Requirements for Temporary and Portable Space
Heating Devices.
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.
6
5. Forced air heaters shall not be directed toward any
propane gas container within 20 feet (6.10 meters).
6. 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.
7. Use only the regulator supplied with the heater. The
heater must be regulated at all times for proper
operation.
8. For safety, this heater is equipped with auto reset limit
switches, and 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.
9. 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.
10. 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.
11. 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.
12. This heater should be inspected for proper operation by
a qualified service person before each use and at least
annually.
13. 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.
14. 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.
15. 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.
16. 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.
17. 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 form the heater and stored in accordance with
the Standard for the Storage and Handling of Liquified
Petroleum Gases, ANSI/NFPA 58.
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.
Installation and Assembly Instructions
GENERAL
WARNING
Fire and Explosion Hazard
Can cause property damage, severe injury or death
To avoid dangerous accumulation of fuel gas, turn
off gas supply at the heater 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. Ensure the heater is properly positioned before use.
The heater must be installed on a level, flat,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 exposed
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.
8. Check all connections for gas leaks using approved
gas leak detectors. Gas leak testing is performed as
follows:
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.
-- 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.
-- If necessary, replace the parts or components
involved if the leak cannot be stopped.
6. 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.
9. A qualified service agency must check for proper
operating gas pressure upon installation of the
heater.
7. Insure that all accessories that ship with the heater
have been and installed.
10. Always use pipe thread compund that is resistant to
propane and natural gas.
-- Ensure all gas leaks have been identified and
repaired before proceeding.
11. Light according to instructions on heater or within
owner's manual.
7
12
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.
16.
Eventually, like all electrical/mechanical devices, the
thermostat can fail. Thermostat failure may result in
an underheating condition. The thermostat should be
tested to make sure it turns the heater on and off
within a temperature differential of ±3°F.
17. 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.
13. This heater is configured for use for propane gas
vapor withdrawal only. Do not use the heater in an
propane gas liquid withdrawal system or application.
If you are in doubt, contact the L.B. White Co., Inc.
14. The heater must be installed so as not to interfere
with or obstruct normal exits, emergency exits, doors
and walkways.
18. 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 ser vice
personnel before placing the heater back into use.
15. Railing, fencing or suitable substitute materials must
be used to keep the heating equipment from any
people using and visiting the structure.
PROPANE GAS SUPPLY SIZING
The vaporization of propane is affected by several factors:
the surface area of the container, the liquid level of
propane, temperature surrounding the container, and the
relative humidity. All of these factors are specific to a site.
Therefore, a degree of experience and judgement is
required to select the proper propane supply.
Although experience is the best guide, the following
recommendations can be used as a starting point. The
table is based on experience during winter in northern
climates. If more or less favorable conditions prevail at a
specific site, adjustments can be made on the basis of
experience.
Recommended Propane Gas Supply
Average Temp ºF
50
40
30
20
10
0
-10
Number of 100lb.
Gas Cylinders to
Use Per Heater
2
2
3
3
3
3
3
* Cylinders must be manifolded together to allow simultaneous vapor withdrawal from all cylinders.
HANDLE ASSEMBLY
Assemble handle to four holes at barrel top as shown
in Fig.1. Tighten screws securely.
8
FIG. 1
HOSE AND REGULATOR ASSEMBLY
Propane Gas
1. Connect rigid end of hose to regulator and tighten
securely.
FIG. 2
2. Install hose adapter to gas inlet of heater. Tighten
adpater securely. Connect end of hose with nut to
hose adapter. Tighten hose nut securely. See Fig 3.
FIG. 3
Natural Gas
--
Connect the components and regulator at the
heater’s gas inlet as shown in Fig. 4. Ensure flow
arrow on regulator body is in direction of gas flow.
Tighten all securely.
FIG. 4
BUSHING, 1/2 x 3/8
REGULATOR
GAS SHUT OFF
TO GAS SUPPLY
STREET ELL
NIPPLE, 3/8
NIPPLE, 1/2
CONNECTING PROPANE REGULATOR TO PROPANE GAS CYLINDER
1. Ensure the cylinder valve is completely closed.
FIG. 5
2. Remove the protective cap from regulator fitting. Do
not discard cap.
3. Insert POL stem into the valve on the cylinder. Thread
the nut counterclockwise into the tank valve. Ensure
regulator vent is pointed down. Tighten the nut
securely with a wrench. See Fig. 5.
3. Slowly open the cylinder valve by turning
counterclockwise. This will prevent lock-up of the
excess flow valve within POL stem.
4. Check all connections with approved leak detector.
Do not use flame to check for leaks. A fire or
explosion may result.
VENT
POL NUT
AND STEM
5. When storing or transporting the heater, ensure the
cap is pushed back onto the POL fitting. This will
protect the fitting from damage and prevent entry of
dirt.
9
HEIGHT ADJUSTMENT
This heater includes a height adjustment feature,
allowing the user to change the elevation of the
heater for greater heat direction. See Fig. 6 for
location of adjustment on front base of heater.
FIG. 6
KNOB
To adjust the heater’s discharge outlet height (See
Fig.6):
-- Loosen knob
-- Lift heater slightly at blower outlet end
-- Pull leg to desired setting
-- Tighten knob.
WARNING
Burn Hazard
■ Do not adjust height while heater is operating or hot.
■ Adjust height only after the heater has been
disconnected from its power supply and cool to touch.
■ Failure to follow this warning will result in burns
causing injury.
10
LEG
Start-Up Instructions
1.
Connect the heater’s electrical cord to an approved
electrical outlet.
2.
Open the gas supply valve. For LP heaters, this is
located on the tank.
3.
Set thermostat on heater to a setting above room
temperature. The heater will start and the burner will
ignite.
■ It is normal for air to be trapped in gas hose on new
installations. You may need to recycle the heater
before air is finally purged from the line and ignition
takes place.
4.
Do not exceed input rating provided on dataplate or
manufacturer’s recommended burner manifold
pressure for size orifice used. Ensure that the
primary air supply to heater is open and free of dust,
dirt and debris for complete, proper combustion.
Shut-Down Instructions
If the heater is to be shut down for cleaning, maintenance,
or repair, follow steps 1-4. Otherwise turn the thermostat to
a lower setting.
3. Set the thermostat to its lowest setting.
4. Disconnect the heater from its gas and electrical
supplies.
1. Close the gas supply valve.
2. Allow the heater to burn off any fuel gas remaining in
the gas supply line.
Variable Rate Valve
This heater includes a variable rate valve for
adjusting the heat output from low to high heat, or
anywhere in-between. See Figs. 7.
FIG. 7
11
14
Cleaning Instructions
WARNING
Fire, Burn, and Explosion Hazard
■ This heater contains electrical and mechanical components 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.
1. Before cleaning, shut off all gas supply valves and
disconnect electrical supply.
2. The heater should have dir t or dust removed
periodically:
NOTE: Before each use clean the heater using
compressed air or a soft brush or dry rag on
its case and internal components. At this
time, dust off the motor case to prevent the
motor from over-heating. Also ensure the fan
blade is free of material build-up.
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 injur y or
property damage due to water and/or liquids:
■ In electrical components, and wires causing electrical
shock or equipment failure.
■ 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.
Maintenance Instructions
1. The area surrounding the heater shall be kept clear
and free from combustible materials, gasoline, and
other flammable vapors and liquids.
2. Have your gas supplier check all gas piping annually
for leaks or restrictions in gas lines.
3. Regulators must be periodically inspected to make
sure the regulator vents are not blocked. Debris,
insects, insect nests, snow, or ice on a regulator can
block vents and cause excess pressure at the heater.
4. Regulators can wear out and function improperly.
Have your gas supplier check the date codes on all
regulators installed and check delivery pressures to
the heater to make sure that the regulator is reliable.
12
14
5. Check all wiring, associated terminals, and electrical
components within the heater for corrosion, frayed or
cut insulation, tight connections, etc. Repair or
replace as necessary.
6. Review all heater markings (i.e. wiring diagram,
warnings, start-up, shut-down, troubleshooting, etc.)
at the time of maintenance for legibility. Make sure
none are cut, torn, or otherwise damaged. Any
damaged markings must be replaced immediately by
contacting the L.B. White Co., Inc. Dataplates, startup and shut-down instructions and warnings are
available at no cost. A nominal charge will be applied
for wiring diagrams.
Service Instructions
GENERAL
WARNING
Burn Hazard
■ Heater surfaces are hot for a period of time after the
heater has been shut down.
■ Allow the heater to cool before performing service,
4. Remove the fan guard and motor/fan assembly for
access to barrel components.
5. The auto reset limit switches, and thermostat can be
tested by disconnecting the leads at the component,
and placing a jumper connecting the leads together.:
maintenance, or cleaning.
■ Failure to follow this warning will result in burns
causing injury.
WARNING
Fire and Explosion Hazard
■ Do not disassemble or attempt to repair any heater
components or gas train components.
■ All component parts must be replaced if defects are
found.
■ Failure to follow this warning will result in fire or
-- Reconnect the electrical supply and open fuel
supply valves.
-- If the heater lights, the component is defective
and must be replaced.
-- Do not leave the jumper on or operate the heater if
the part is defective. Replace the part immediately.
-- An alternate method for checking the components
is to perform a continuity check..
6. The air proving switch must not be jumpered. If
jumpered, the ignition control will not allow heater
operation. Test the air proving switch for continuity.
If defective, replace the switch
explosions, causing property damage, injury, or death.
1. Close the fuel supply valve to the heater and
disconnect the electrical supply before servicing
unless necessary for your service procedure.
2. Remove the heater’s base bottom for access to
electrical components and connections.
3. Disconnect the appropriate electrical leads for the
component being replaced.
7. For reassembly, reverse the respective service
procedure. Ensure gas connections are tightened
securely.
8. After servicing, start the heater to ensure proper
operation and check for gas leaks.
9. Clean the heater’s orifice with compressed air or a
soft, dry rag. Do not use files, drills, broaches, etc. to
clean the orifice. Doing so may enlarge the hole,
causing combustion or ignition problems. Replace
the orifice if it cannot be cleaned properly.
MOTOR , FAN, AND AIR PROVING SWITCH
1.
Remove fan guard and screws securing the motor
mount to the heater’s barrel. See Fig 8..
2.
Lift motor/fan assembly from heater.
FIG. 8
Fan
-- Loosen set screw at hub.
-- Pull fan from shaft.
-- Ensure fan is flush on shaft end, and set screw is
positioned over flat of motor shaft before tightening
FIG. 9
REMOVE ON
BOTH SIDES
FAN HUB FLUSH WITH SHAFT END
SET SCREW
Motor
-- Remove both screws and strap securing the motor.
-- Position the motor between motor mount stops when
reinstalling.
Air Proving Switch
-- Remove screw securing switch bracket to motor mount.
-- On reassembly, ensure tab on switch bracket is located in
hole.
TAB IN
HOLE
REMOVE
SCREWS
STRAP
AIR PROVING
SWITCH
13
14
AUTO RESET LIMIT SWITCHES
There are two auto reset limit switches on this heater.
One is located on the burner plate. The other is located
on the underside of the combustion chamber. Either
will cut off power to the gas control valve if the heater
should overheat.
Switch mounted on burner plate. See Fig. 10.
-- Remove the screws, spacers and nuts holding the
switch to the burner plate.
FIG. 10
LIMIT
SWITCH
TESTING
The switches should be tested annually.
1. Remove the appropriate switch. Apply a small,soft
flame to the sensing disk of the switch. See Fig. 12.
Be careful not to melt the switch’s plastic housing
when conducting this test.
2. Within a short time, you should hear the contacts of
the switch opening. Check for continuity across
terminals to ensure the switch has opened.
3. Allow the switch to cool. The switch contacts will close.
Check for electrical continuity across the switch
terminals to ensure contacts have closed.
FIG. 12
NUTS,SCREWS,
SPACERS
Switch mounted on underside of combustion
chamber. (See Fig. 11.)
-- Remove base bottom of heater.
-- Remove screws securing the limit to the
underside of the combustion chamber.
-- The combustion chamber is stamped with the
letters P (Propane) and N (Natural gas) adjacent
to the screw holes to identify limit switch location
for the appropriate gas.
FIG. 11
N
ACCESS HOLE IN
BARREL BOTTOM
P
SWITCH IN PROPANE
LOCATION
COMMON FOR PROPANE
AND NATURAL GAS
VARIABLE RATE VALVE AND GAS CONTROL VALVE
1. Loosen the compression nut at the outlet of the
variable rate valve. See Fig. 13.
FIG. 13
2. Remove both screws securing the valve bracket to
the heater side panel.
3. Remove the valve assembly from the heater and
replace components as needed.
14
GAS CONTROL VALVE
COMPRESSION NUT
VARIABLE RATE VALVE
SCREWS
IGNITER
MAINTENANCE
FIG. 15
1.
Using a small wire brush, reach down the barrel of
the heater and brush the igniter electrode. Remove
any build up.
2.
Ensure the igniter is positioned as shown. See Fig.14.
3.
Periodically check the gap. Gap should be .10 as
shown in Fig. 15.
.10 in.
FIG. 14
IGNITER NUT
REMOVAL
IGNITOR
1.
Disconnect the ignitIon cable from the igniter. See
Fig.16.
FIG. 16
HEX
ORIFICE
IGNITION CABLE
2.
Holding the igniter at its hex, (Fig. 16) reach in the
heater’s barrel and remove the igniter’s mounting
nut. See Fig 14. When replacing, ensure position
and gap.
BURNER ORIFICE
1. Loosen the compression nut at the burner orifice.
Remove the bowed retaining clip. See Fig. 17.
FIG. 17
BOWED CLIP
2. Reach down the barrel of the heater and pull the
orifice from the burner plate.
3. Inspect the orifice and clean any plugged holes.
Replace it if necessary. The replacement orifice will
include retaining clips.
FIG. 18
COMPRESSION NUT
15
THERMOSTAT
1.
Remove knob and thermostat mounting screws. See
Fig. 19.
2.
Remove the base bottom from the heater.
3.
Slide the thermostat sensing bulb from the cable tie
at the wiring harness.See Fig. 20.
FIG. 20
FIG. 19
BULB
THERMOSTAT
SCREWS
IGNITION CONTROL
1.
Disconnect the LED wire harness from the circuit
board, if applicable.
2.
Disconnect the ignition cable and remove the nuts
securing the control to the side of the heater’s base.
See Fig. 21.
3.
When replacing, use care to prevent damage to the
controller’s components
FIG. 21
IGNITION
CABLE
NUT
LED WIRE
HARNESS
16
14
GAS PRESSURE CHECKS
■ The following explains a typical procedure to be followed
in checking gas pressures.
■ The gas pressures will vary depending upon fuel type.
■ Consult the dataplate on the heater or page 4 in this
3. Position the heater upright. Lower the height
adjustment leg to elevate the heater and prevent
pinching of gauge hose See Fig. 24.
FIG. 24
manual for specific pressures to be used in conjunction
with this procedure.
■ Gas pressure measured at the gas control valve will verify
proper inlet and burner manifold pressures.
A. Preparation
1. Obtain a pressure gauge capable of reading up to 35
in. W.C.
2. Disconnect the heater from the electrical supply and
close the fuel supply valve to the heater inlet.
3. Remove the bottom base panel.
4. Brush or blow off any dust and dirt on or in the vicinity
of the gas control valve.
C. Reading Pressures
1. With the heater operating, the pressure gauge must
read the pressures specified on the dataplate
B. Gauge Installation
1. Remove the pressure tap plug on gas control valve. See
Fig. 22.
FIG. 22
2. Does the reading at the gas control valve agree with
that specified on the dataplate? If so, then no further
checking or adjustment is required. Proceed to section
D.
3. If the inlet pressures do not agree with that specified
on the dataplate, then the regulator controlling gas
pressure to the heater requires adjustment.
PLUG
D. Completion
1. Once the proper pressure has been confirmed and/or
properly set, close the fuel supply to the heater and
allow the heater to burn off any gas remaining in the
gas supply line.
2. Disconnect the heater from its electrical supply.
2. Install the gauge at the gas control.. See Fig. 23
3. Remove the gauge.
4. Install pressure tap plug and tighten securely
FIG. 23
GAUGE CONNECTED
TO GAS CONTROL
5. Open the fuel supply and start the heater. Check for
gas leaks at the plug Set heater’s thermostat to
desired temperature.
17
Troubleshooting Information
READ THIS ENTIRE SECTION BEFORE BEGINNING
TO TROUBLESHOOT PROBLEMS.
WARNING
■ This heater can start at any time.
■ Troubleshooting this system may require operating the
unit with voltage present and gas on. Be careful when
working on the heater.
■ Failure to follow this warning may result in property
damage, personal injury or death.
The following troubleshooting guide provides systematic
procedures for isolating equipment problems. This guide is
intended for use by a QUALIFIED GAS HEATER SERVICE
PERSON. DO NOT ATTEMPT TO SERVICE THESE HEATERS
UNLESS YOU HAVE BEEN PROPERLY TRAINED.
Tradesman Non - Diagnostic Heters
Page
Fan Does Not Run, Heater Does Not Light. . . . . . . . . . . . 23
Fan Runs, Heater Does Not Light . . . . . . . . . . . . . . . . . . . 24
Heater Lights, But Does Not Stay Lit . . . . . . . . . . . . . . . . 25
Components should be replaced only after each step has
been completed and replacement is suggested in the flow
chart. Refer to the Servicing sections as necessary to
obtain information on disassembly and replacement
procedures of the component once the problem is identified
by the flow chart.
DIRECT IGNITION OPERATION SEQUENCE:
------
TEST EQUIPMENT REQUIRED
The following pieces of test equipment will be required to
troubleshoot this system with minimal time and effort.
• Digital Multimeter - for measuring AC voltage and
resistance.
• Low Pressure Gauge - for checking inlet and outlet
pressures at the gas control valve against dataplate
rating.
Refer to the system operation sequence in this section to
gain an understanding as to how the equipment operates
during a call for heat. Understanding the sequence of
operation is important as it relates to problem solving.
Heater models labeled Tradesman Ultra have a red light
located at the fan end of the heater. The light will flash a
specific pattern depending upon the problem which is
diagnosed. If the light is flashing, the flash pattern will be
followed by a pause and then a repeat of the flash pattern
until the problem is corrected. Use the light to help
diagnose the problem.
Heater models labeled Tradesman do not have the
diagnostic red light.
Troubleshooting Flow Charts are provided to eliminate
problems. To use the flow charts effectively, you must first
identify the problem.
Before beginning::
■ Inspect heater for apparent damage.
■ Check all wiring for loose connections and worn
insulation.
Tradesman Ultra Diagnostic Heaters
Page
Red light is steady on. No flash pattern. . . . . . . . . . . . . . 19
Red light light is not on. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Red light is flashing:
A. One Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
B. Two Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
C. Three Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
D. Four Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
18 D. Five Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
------
--
--
--
--
Voltage is sent to the thermostat.
Thermostat calls for heat.
Thermostat sends voltage to ignition control.
Red light is illuminated.( Diagnostic Heaters Only).
Ignition control module performs self safety check.
-- Internal components are tested.
-- Air proving circuit is checked.
Ignition control module begins ignition trial sequence.
Ignition control module sends 115 volts to air proving
.
switch.
Ignition control sends 115 volts to motor, motor starts.
Air proving switch closes and 115 volts are returned to the
ignition control module.
Ignition control module sends high voltage to the igniter
electrode.
-- Igniter sparks.
Ignition control module sends 115 volts to the gas control
valve through the auto reset limit switches.
-- Gas control valve opens.
Ignition occurs.
-- Igniter continues to spark until flame proving
occurs.
-- Ignition spark is cut off.
-- Gas valve stays open.
Room warms to desired temperature.
-- Thermostat is satisfied.
-- Heater shuts down.
Process starts again on a call for heat.
IGNITION FAILURE SEQUENCE:
-- Trial for ignition takes approximately 10 seconds.
-- If ignition module does not sense a flame within the ignition
trial, the module goes into safety lockout (3 flash pattern.)
-- Gas valve closes.
-- Ignition spark shuts off.
-- Fan motor stops.
-- To retry for ignition, the systems must be reset:
-- Turn the thermostat down and then up to call for
heat
or unplug heater and plug it back in or
-- Position selector switch to off and then back to
on.
19
LED light
not on
Problem
Set thermostat
above room
temperature.
No
Is thermostat
set above room
temperature?
No
Does fan
motor run?
Red Light Constant On
Yes
No
Is proper voltage
supplied to
heater power
cord?
No
Does thermostat
receive proper
voltage from
power cord?
Does heater
light?
Yes
Yes
Check extension cords and
circuit breakers. Repair
extension cord, reset breaker,
or call qualified electrician.
Yes
Normal Operation
Check for proper voltage
delivered from thermostat to
circuit board.
If electrical connections are
good, replace thermostat.
No
Yes
Replace LED
Does thermostat
send proper
voltage to
ignition control?
LED light
defective
Defective
Ignition
Control
20
One Time
Air proving switch
contacts are closed
before fan motor starts.
LED Flashing
Problem
Is air proving
switch shorted?
(Check continuity on
air proving switch in
open and closed
positions).
No
Is air proving switch
stuck closed?
Check continuity.
Yes
Yes
If air proving switch is jumered,
remove jumper and retest.
If switch exhibits short, replace the
switch.
Replace air proving switch
No
Is air proving switch Yes Repair.
binding?
TRADESMAN ULTRA HEATER
21
Two Times
Indicates lack of air
proving in fan
section (Flash
pattern begins
within 90 seconds
after condition
Occurs).
Problem
Yes Replace
motor
Defective
Yes ignition
control.
Check circuit breakers,
and any extension
cords if used.Contact a
qualified electrician
No
Is
proper voltage
supplied to heater
power cord?
No
Is
ignition control
receiving proper
voltage?
No
Is proper voltage
supplied to motor
from ignition
control?
No
Does fan motor
run?
Yes
Defective air proving
switch.
No
Do air proving switch
contacts close?
Check continuity.
No
Is switch binding?
No
Is Fan loose On
motor shaft?
No
Is fan binding,
or bent, or
caked with
dirt?
No
Yes
Yes
Yes
Repair.
Defective ignition
control
No
Does ignition
control send voltage
to air proving
switch?
Tighten fan blade set screw
Yes Remove dirt.
repair or
replace fan.
Are there
blockages at air Yes Remove
inlet of heater?
blockage
22
Five Times
Rapid On/Off
cycling of the
burner.
Four Times
Three Times
Indicates ignition
failure.The ignition
control is in safety
lockout..
Problem
No
Is proper
voltage
supplied to
gas valve?
No
Does gas
solenoid valve open?
Yes
Defective gas
valve.
Yes
Flame sense related problems. Check for
cracked or dirty flame sensor, improperly
positioned sensor, or poor flame sense ground.
Connect high
voltage lead
No
Yes
Yes
No
No
Reposition
Igniter.
(See Service
Instructions)
No
Is ignitor gap
positioned
toward burner
orifice?
Determine if ignitor receives high voltage:
-- Disconnect ignition lead from ignition control.
-- Position a screwdriver tip about 3/16 inch away
from ignition control where lead was connected .
-- WITH GAS OFF, start the heater.
-- If no spark is seen, replace the igntion control.
-- If spark is seen, reconnect igntion lead to control.
-- Disconnect the lead at the ignitor.
-- Hold the lead about 3/16 in. from a grounded
section of the heater.
-- WITH GAS OFF, start the heater.
-- If no spark is observed, replace the ignition lead.
-- If spark is observed, replace the ignitor.
Yes
Check continuity across
switch. If contacts are
open determine cause.
Check for:
proper voltage, blockages
at air inlets or outlet, loose
fan, or low fan speed.
If good, repalce backflash
switch.
Is Ignitor
properly
gapped?
Yes
Check igniter gap
Regap to .10 in.
Is backflash
switch tripped?
Check
continuity
Is igniter high voltage
lead securely
connected?
No
Does ignitor
spark?
Provide proper gas supply
pressure to heater. Refer to
dataplate. If LP gas is used,
ensure LP container is full.
No
No
Connect proper
gas supply to
heater. Open all
gas shutoff valves.
Is proper gas
Yes
pressure supplied
to heater?
Yes
Is proper fuel
supplied to heater
inlet?
Defective wires or
connections. If good,
replace ignition control.
Yes
If control module does not reset, then replace the it (Internal
board fault.)
If module resets, then have qualified electrician check power
source for power quality problems. (Frequency, line noise, line
spikes, loose connections, too small wire gauge.)
Ensure all
Grounds are
Connected.
No
Is the heater
properly
grounded?
23
Fan motor does
not run, heater
does not light.
Problem
Defective Ignition
Control.
No
Is voltage
supplied to air
proving switch
from the
ignition
control?
Yes
Provide proper
voltage to heater.
Check breajer and
extension cords.
No
Yes
Set thermostat
above room
temperature
No
Is
thermostat
set above room
temperature?
Are air proving
switch contacts
stuck closed?
Is proper voltage Yes
supplied to
heater?
Yes
Check power cord
and electrical supply.
No
Is proper
voltage
supplied to
thermostat?
Check continuity. If
binding switch. Repair
as needed or replace
air proving switch.
Yes
TRADESMAN HEATER
Defective thermostat.
No
Is proper
voltage supplied
to ignition
control?
No
Does fan motor
start?
Yes
Check for voltage from ignition
control to fan motor. If motor
receives voltage but does not
start, replace the motor.
If motor does not receive voltage
from the ignition control, replace
the ignition control.
Yes
24
Fan runs,
heater does
not light.
Problem
Yes
Defective
valve.
Yes
Yes
Yes
Connect High Voltage
Lead
No
Is high voltage
lead securely
connected to
ignition control
and ignitor?
No
Yes
Yes
Yes
Yes
Reposition igniter.
(See Service Instructions)
No
Isi ignitor gap
positioned
toward burner
orifice?
Determine if ignitor receives high voltage:
-- Disconnect ignition lead from ignition control.
-- Position a screwdriver tip about 3/16 inch away
from ignition control where lead was connected .
-- WITH GAS OFF, start the heater.
-- If no spark is seen, replace the igntion control.
-- If spark is seen, reconnect igntion lead to control.
-- Disconnect the lead at the ignitor.
-- Hold the lead about 3/16 in. from a grounded
section of the heater.
-- WITH GAS OFF, start the heater.
-- If no spark is observed, replace the ignition lead.
-- If spark is observed, replace the ignitor.
Yes
Check continuity across
switch. If contacts are
open determine cause.
Check for:
proper voltage, blockages
at air inlets or outlet, loose
fan, or low fan speed.
If good, repalce backflash
switch.
No
Are the
backflash switch
contacts
closed.?
Check igniter gap
Regap to .10 in.
No
Is ignitor
properly
gapped?
Check continuity
of switch.Ensure
switch arm is not
binding. Repair
or replace air
proving switch.
No
Do air proving
switch contacts
close?
Does ignitor
spark?
Provide proper
gas pressure to
heater inlet.
No
Is proper
gas pressure
supplied?
Defective wires or
connections. If good,
replace ignition control.
No
Is proper
voltage
supplied to
valve?
No
Does gas
solenoid valve open?
Open fuel supply
vaves .
No
Are all fuel
supply valves
open?
TRADESMAN HEATER
25
Heater lights
bt will Not stay
lit.
Problem
Connect high
voltage lead?
No
Is
high voltage
lead securely
connected?
No
Is
ignitor
cracked?
Ensure all
grounds are
connected.
No
Is the heater
properly
grounded?
Yes
Yes
Yes
Yes
Defective ignition
control.
Repalce ignitor.
Connect proper
gas supply to
heater. Open all
gas shutoff valves.
No
Is proper fuel
supplied to heater
inlet?
Provide proper gas
supply pressure to
heater. Refer to
dataplate. If LP gas is
used, ensure LP
container is full.
No
Is proper gas
Yes
pressure supplied
to heater?
No
Is proper
voltage
supplied to
heater?
Check electrical
supply. If extension
cords are used,
eensure proper
wire gauge.
TRADESMAN HEATER
Yes
Clean and
check gap.
Replace igniter
if needed.
No
Is igniter clean?
Yes
Electrical Connection and Ladder Diagrams
TRADESMAN 170 AND TRADESMAN 170 ULTRA
LED (ULTRA
UNITS ONLY)
26
Heater Component Function
Air Proving Switch
Safety device used to insure that the proper air flow is being
achieved before the gas valve is opened.
Gas Control Solenoid Valve
House an electromagnet which is energized by voltage and
opens to allow passage of gas to the burner orifice.
Auto Reset Limit Switch
Safety device wired into the control system which is used to
break an electrical circuit to the gas control valve in event of
overheat situation.
Gas Hose
Flexible connector used to convey gas from supply line in
building to heater.
Burner
Component used to channel gas and provide an area at
which the fuel may ignite.
Burner Orifice
Brass metering device used to feed gas to burner at a
specific rate.
Combustion Chamber
Metal chamber within heater that provides an area where
burner gas mixes with combustion air, thereby providing
heat.
Direct Spark Ignition Control Module
Electronic printed circuit board which sends and receives
voltages to various controls in an automatic ignition system.
An important safety feature of the control board is that it will
shut down the entire heater, thereby stopping the flow of
fuel gas if burner flame goes out.
Fan
Component used in conjunction with the motor to pull the
fresh air into the heater and blow it into room for heating
Igniter
Ignition device used on automatic direct spark ignition
control systems. Ignites gas by spark.
Igniter Wire
Cable used to provide high voltage to the igniter and also a
pathway for flame sense current.
Motor
Electric device used to force preheated air through the
heater and to circulate heat within a certain area. Converts
electrical energy into mechanical energy.
Regulator
Mechanical device used in gas distribution systems to
reduce a higher inlet pressure to a preset lower pressure.
The regulator is responsible to supply a steady outlet
pressure to the heater(s) despite changes in inlet pressure,
heater demand and weather conditions.
Thermostat
Electrical device used as an automatic “on/off” switch
which will respond to changes in temperature in a certain
area.
27
Parts Identification
PARTS SCHEMATIC
28
PARTS LIST
Item
1A
1B
2
3A
3B
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Description
Part Number
Tradesman 170
Tradesman 170
ULTRA
Regulator with POL (Propane Gas)
Regulator (Natural Gas)
Hose, Fixed X Swivel, 3/8 in. x 10 ft. (Propane gas )
Hose, Fixed X Swivel, 1/2 in. x 10 ft. (Natural gas) Accessory
Adaptor, Hose, 3/8 in. (Propane Gas)
Adaptor, Hose, 1/2 in. (Natural Gas) Accessory
Nipples,bushing, and ell
Manual shut off valve
Knob, thermostat
Power cord
Thermostat w/knob
Lens, LED
--Air proving switch
Motor mount w/strap
Motor
Gas control valve with bracket
Variable rate valve with nipple
Manifold tube with fittings
Ignition cable, high voltage
Igniter with nut
Auto reset limit switch
Fan blade
Ignition control
Fan guard
Barrel assembly with fan guard
572523
Handle assembly with screws
Combustion chamber with limit switches, orifice, and igniter
(Propane gas)
(Natural gas)
Burner orifice with retaining clips
(Propane gas)
(Natural gas)
Case assembly, lower, with base, with leg and knob
(Propane gas)
572513
(Natural gas)
572530
Knob, height adjustment
Leg, with adjustment knob
Base
572533
Wiring harness
21856
06713
21841
20504
572517
25873
572535
571173
572514
571356
571119
571333
06739
572516
571229
572520
572519
572518
571263
07160
572515
571238
571344
572521
572524
572522
572525
572526
572527
572528
572531
572532
572529
572536
572534
572557
29
Warranty Policy
EQUIPMENT
L.B. White Co., Inc. warrants that the component parts of its
heater are free from defects in material and workmanship,
when properly installed, operated, and maintained in
accordance with the Owner’s Manual safety guides and
labels contained with each unit. If, within 12 months from
the date of purchase by the end user, any component is
found to be defective, L.B. White Co., Inc. will at its option,
repair or replace the defective part or heater, with a new
part or heater, F.O.B., Onalaska, Wisconsin.
A warranty card on file at L.B. White will automatically
qualify the heater and its component parts for warranty
consideration. If a warranty card is not on file, a copy of the
bill of sale will be required to establish warranty
qualification. If neither is available, the warranty period will
be 12 months from date of shipment from L B. White.
PARTS
L.B. White Co., Inc. warrants that replacement parts
purchased from the company and used on the appropriate
L. B. White heater are free from defects both in material and
workmanship for 12 months from the date of purchase by
the end user. Warranty is automatic if a component is found
defective within 12 months of the date code marked on the
part. If the defect occurs more than 12 months later than
the date code but within 12 months from the date of
purchase by the end user, a copy of a bill of sale will be
required to establish warranty qualification.
The warranty set forth above is the exclusive warranty
provided by L.B. White, and all other warranties, including
any implied warranties or merchantability or fitness for a
particular purpose, are expressly disclaimed. In the event
any implied warranty is not hereby effectively disclaimed
due to operation of law, such implied warranty is limited in
duration to the duration of the applicable warranty stated
above. The remedies set forth above are the sole and
exclusive remedies available hereunder. L.B. White will not
be liable for any incidental or consequential damages
directly or indirectly related to the sale, handling or use of
the heater, and in any event L.B. White's liability in
connection with the heater, including for claims based on
negligence or strict liability, is limited to the purchase price.
Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.
Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above
limitation or exclusion may not apply to you. This warranty
gives you specific legal rights, and you may also have other
rights which vary from state to state.
Replacement Parts and Service
Contact your local L.B. White dealer for replacement parts
and service or call the L.B. White Co., Inc. at (800) 3457200 for assistance. Be sure that you have your heater
model number and configuration number when calling.
30
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