L.B. White 320, 341, CV225, CV100 User Manual
Convection
Vertical Heaters
Workman Standard Duty
Norseman Heavy Duty
View this manual online at www.lbwhite.com
Attention
Models 320, CV225 and CV100
heaters have been tested and
evaluated by CSA Group in
accordance with Standard ANSI
Z83.7 • CSA 2.14 and are listed
and approved as a direct fi red
vertical convection construction
heaters for use on combustible
fl oors. Model 341 heaters are
tested and evaluated by the
L.B.White and are not approved
for use on combustible fl oors.
All heaters are 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 Company, LLC
This manual provides
instruction for all
vertical construction
heaters manufactured by
L.B. White. Information
relating to a specifi c
model or gas confi guration is noted. Unless,
noted, the information
applies to all models.
Owner’s Manual and Instructions
320
200,000 Btu/h*/58.6kW
341
250,000 Btu/h*/73.3kW
CV225
225,000 Btu/h*/65.9kW
CV100
100,000 Btu/h*/29.3kW
*Specifi c models for
US or Canada. Refer
to heater dataplate.
Propane
Vapor
Withdrawal
Natural
Gas
Congratulations!
You have purchased the fi nest convection heater available.
Your new L.B. White heater incorporates the benefi ts from the
most experienced manufacturer of heating products using
state-of-the-art technology.
We, at L.B. White, thank you for your confi dence in our products
and welcome any suggestions or comments you may have...call
us, toll-free, at 1-800-345-7200.
www.lbwhite.com
SCAN THIS
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SEE ASSEMBLY
INSTRUCTIONS
INSIDE
WORLD PROVIDER - INNOVATIVE HEATING SOLUTIONS
411 Mason Street, Onalaska, WI 54650, USA • 800-345-7200 • 608-783-5691 • 608-783-6115 (fax) • www.lbwhite.com
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videos for L.B.White heaters.*
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for Android or for iPhone
2
Vertical Convection Heaters
TABLE OF CONTENTS
Heater Specifi cations ............................................................................................................... 4
General Information ................................................................................................................. 5
Safety Precautions .................................................................................................................. 6
Installation Instructions
General ......................................................................................................................... 10
Burner Installation, Norseman 200 Plus and Norseman 250 ........................................ 12
Hose and Regulator Assembly - Propane Heaters ....................................................... 12
Connecting the Regulator to the Gas Supply
Propane Heaters ................................................................................................ 13
Natural Gas Heaters ........................................................................................... 13
Lighting and Shut Down Instructions
Workman 225 Plus ............................................................................................. 14
Norseman 200 Plus and Norseman 250 ............................................................ 15
Workman 100 Plus Natural Gas ......................................................................... 16
Cleaning Instructions ............................................................................................................... 17
Maintenance Instructions ......................................................................................................... 18
Service Instructions ................................................................................................................. 19
General ......................................................................................................................... 19
Workman 225 Plus ........................................................................................................ 19
Burner Orifi ce and Safety Control Valve ............................................................. 19
Workman 100 Plus Natural Gas.................................................................................... 20
Pilot Orifi ce ......................................................................................................... 20
Burner Orifi ce ..................................................................................................... 20
Safety Control Valve and Gas Regulator ............................................................ 20
Norseman 200 Plus and Norseman 250 ....................................................................... 21
Burner Orifi ce ..................................................................................................... 21
Pilot Orifi ce ......................................................................................................... 21
Safety Control Valve ........................................................................................... 21
Igniter and Electrode (Workman 225 Plus, Norseman 200 Plus, and Workman 100 Plus) . 22
Thermocouple (all models) ........................................................................................... 23
Gas Pressure Checks ................................................................................................... 24
Troubleshooting Information .................................................................................................... 26
Heater Component Function ................................................................................................... 27
Parts Identifi cation
Parts Schematic and Parts List
Workman 225 Plus ............................................................................................. 28
Norseman 200 Plus and Norseman 250 ............................................................ 29/30
Workman 100 Plus Natural Gas ......................................................................... 31
Warranty Policy, Replacement Parts, and Service .................................................................. 33
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Owner’s Manual • Workman & Norseman
Vertical Convection Heaters
3
■ 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
■ 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
GENERAL HAZARD 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
■ 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.
FIRE AND EXPLOSION HAZARD
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.
Owner’s Manual • Workman & Norseman
FOR YOUR SAFETY
Do not store or use gasoline or other fl am-
mable vapors and liquids in the vicinity of this
or any other appliance.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don’t touch electrical switches.
3. Extinguish any open fl ame.
4. Immediately call your gas supplier.
WARNING
Cancer and reproductive harm.
See www.P65Warnings.ca.gov.
4
Vertical Convection Heaters
Specifications
Description Model
320 341 CV225 CV100
Fuel Type Propane Gas Propane Gas Propane Gas Natural Gas
Input (Btuh/kW) MAX. 200,000 / 58.6 250,000 / 73.3 225,000 / 65.9 100,000 / 29.3
MIN. N/A N/A 45,000 / 13.2 N/A
Inlet gas supply pressure
acceptable at the gas con-
nection of the heater (see
Footnote 1)
Burner manifold pressure
(see Footnote 1)
Fuel consumption per hour
(see Footnote 2)
Dimensions (Inches/cm)
LxWxH
Minimum safe distances
from nearest combustible
materials (Feet/Meters)
MAX. 23 / 158.6 23 / 158.6 10.2 / 70.3 13.5 / 3.36
MIN. 23 / 158.6 23 / 158.6 10.2 / 70.3 7.0 / 1.74
23 / 158.6 23 / 158.6 10.0 / 68.9 5.1 / 1.27
MAX. 9.28 / 4.21 11.6 / 5.26 10.44 / 4.73 100 / 2.83
MIN. N/A N/A 2.08 / 0.94 N/A
18x13x24/
46x33x61
TOP 5 ft. 10 in. / 1.77 8.0/2.43 5 ft. 10 in. / 1.77 5.0 / 1.52
SIDES 4.0 / 1.2 3.0 / .91
BELOW O See Footnote 3 O O
PROPANE US: 6/1.83 Canada: 10/3.05 N/A
18x13x24/
46x33x61
17x15 x26/
43x38x66
16.5x15x 25/
42x38x64
Footnote 1: Gas pressures: Models 320, 341, and CV225: expressed in PSIG/kPa.
Model CV100: expressed in Inches of Water Column / kPa
Footnote 2: Fuel consumption: Models 320, 341, and CV225: expressed in pounds/kilograms per hour
Model CV100: expressed in cubic feet / cubic meters per hour.
Footnote 3: DO NOT place this heater on any combustible material
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Owner’s Manual • Workman & Norseman
General Information
When calling for technical service assistance, or for
other specifi c information, always have model
number, confi guration 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 installer review this manual
with you so that you fully understand the heater and
how it functions.
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 continuous product improvement. It reserves the right to
change specifi cations and design without notice.
Vertical Convection Heaters
5
Owner’s Manual • Workman & Norseman
6
Vertical Convection Heaters
Safety Precautions
WARNING
■ Do not use this heater for heating human living quarters.
■ Use of direct-fi red 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.
- Diffi culty 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 fl ow of combustion and ventilation air exchange cannot become obstructed.
■ As the building ‘tightens up” during the construction phases, ventilation may need to be increased.
Air Quality Hazard
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Owner’s Manual • Workman & Norseman
Vertical Convection Heaters
Fuel Gas Odor Odor Fading - No
Propane gas and natural gas have man-made odorants added specifi cally 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 fl ame. Do not
use your telephone.
■ Get everyone out of the building and away from the
area immediately.
■ Close all fuel supply valves.
■ 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 gassupplier and your fi re department. Do not re-enter
the building or area.
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 and your
local natural gas supplier (utility) 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 fi lter the odorant.
7
■ Stay out of the building and away from the area
until declared safe by the fi refi ghters and your fuel
gas supplier.
■ FINALLY, let the fuel gas service person and the
fi refi ghters 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 heater for you.
Owner’s Manual • Workman & Norseman
■ 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.
8
Vertical Convection Heaters
Attention - Critical
Points to Remember!
WARNING
Burn Hazard
■ High surface and discharge temperatures.
■ Do not touch the heater or come within safe
clearances given on dataplate or owner’s
manual.
■ Use extreme caution when lighting the heater
or adjusting heat levels.
■ Failure to follow this warning can result in
burns or ignition of clothing.
■ Burns cause serious injury or death.
• Propane gas has a distinctive odor. Learn to recognize this odor. (Reference “Fuel Gas Odor” and
“Odor Fading” section above.
• If you have not been properly trained in repair and
service of propane gas fueled heaters, then do not
attempt to light heater, perform service or repairs,
or make any adjustments to the heater on 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 odor 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!
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 qualifi ed gas installation person, you must
have suffi cient 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. Norseman 200, Workman 225, Workman 100 NG:
In the Commonwealth of Massachusetts, these
products must be installed by a gas fi tter 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 fi re
department or similar government agencies, or
your insurance agent can help you determine code
requirements.
In the absence of local codes, refer to:
-- ANSI/NFPA 58, latest edition, Standard for Storage
and Handling of Liquefi ed Petroleum Gas
-- ANSI Z223.1/NFPA 54, National Fuel Gas Code
-- CSA B149.1, Natural Gas and Propane Installation
Code.
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.
Qualifi cations for service and installation of this
equipment are as follows:
a. To be a qualifi ed gas heater service person, you
must have suffi cient training and experience to
handle all aspects of gas-fi red 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
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Owner’s Manual • Workman & Norseman
3. Not for use with duct work.
4. We cannot anticipate every use which may be
made of our heater. Check with your local fi re
safety authority if you have questions about applications.
5. Other standards govern the use of fuel gases and
heat producing products in specifi c applications.
Your local authority can advise you about these.
6. Use only compressed air, soft brush or dry cloth to
clean the interior of the heater and it’s components.
Vertical Convection Heaters
9
7. Always use approved pipe thread compound
suitable for use with propane gas on the threaded
connections.
8. 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.
9. 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 building materials, and contact with hot surfaces during
use. The replacement hose assembly shall be that
specifi ed by the manufacturer. See parts list.
10. Check for gas leaks and proper function upon
heater installation or when relocating. Refer to
leak check instructions within installation section
of this manual.
11. This heater should be inspected for proper
operation by a qualifi ed service person before
each use and at least annually.
12. Always turn off the gas supply to the heater
when not using the heater.
14. 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.
15. 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 the Standard for Storage and Handling of Liquefi ed Petroleum Gases,
ANSI/NFPA 58, and natural GAs and Propane
installation code, CSA B149.1
16. Propane gas supply containers have left handed
threads. Always use the appropriate wrench to
tighten or loosen the P.O.L. fi tting at the propane
gas containers supply valve. Do not use pliers.
13. If gas fl ow is interrupted and fl ame goes out, do
not relight the heater until you are sure that all
gas that may have accumulated has cleaned
away. In any event, do not relight the heater for
at least 5 minutes.
Owner’s Manual • Workman & Norseman
10
Vertical Convection Heaters
General Installation Instructions
WARNING
Can cause property damage, severe injury or death.
1. 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.
2. Do not force the safety control valve’s button. Use
only your hand to depress the button. Never use
any tools. If the button will not operate by hand, the
control should be replaced by a qualifi ed service
technician. Force or attempted repair may result in
fi re or explosion.
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
INSTALLATION INSTRUCTIONS
qualifi ed service agency for repair or replacement.
2. Position heater properly before use. Using a
level, ensure the heater is installed on a level,
fl at, horizontal and stable surface when hot or in
operation and according to minimum clearances
from combustible surfaces such as walls, fl oor or
ceilings. Do not place combustible materials within
this zone of clearance. See Specifi cation Page
4 of this manual for minimum safe distances to
combustible materials.
Burn Hazard
WARNING
■ Temperatures at base of the Norseman
250 (model 341) may ignite combustible
materials.
■ Use the Norseman 250 heater on non-combustible materials to avoid a fi re hazard.
Fire Hazard
3. L.P Gas Installation Requirements
■ Ensure all L.P. gas containers are secured and
protected from people, vehicular traffi c and
contact.
■ L.P. gas containers must be located on a
fl at,level, and stable surface.
■ L.P. gas cylinders (100 lb./45kg cylinders/tanks)
must be secured from tip-over.
Contact your local authorities, L.P. gas dealers, or
fi re marshalls for specifi cs dealing with installation
in your area.
4. Position the heater and its gas supply hose so
as to protect heater and its gas supply hose
from traffi c. Protect hoses with a shielding
device of suitable nature to protect the hose
from traffi c and movement or other construction
equipment.
5. The heater shall be installed so it is not directly
exposed to water spray, rain, and /or dripping
water.
6. 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.
7. Heaters used in the vicinity of combustible
tarpaulins, canvas, plastics, wind barriers, or
similar coverings shall be located at least 10
feet (3.05m) 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.
■ Per OSHA 1926.154: a heater not suitable for use
on a combustible surface may be used on such
surfaces providing the heater rests on a suitable
heat shielding and insulating material, such as
concrete, of at least 1 inch (2.54cm) thickness. The
insulating material shall extend beyond the heater
2 feet (0.61m) or more in all directions.
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Owner’s Manual • Workman & Norseman
Vertical Convection Heaters
11
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 fl ame (matches, torches,
candles, etc.) in checking for gas leaks.
■ Use only approved leak detectors.
■ Failure to follow this warning can lead to fi res
or explosions.
■ Fires or explosions can lead to property damage, personal injury or loss of life.
-- Check all pipe connections, hose connections,
fi ttings 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.
-- Further 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 fl ashback.
9. A qualifi ed service agency must inspect the
heater before each use and at least annually.
10. Light according to instructions on heater or
within owner’s manual.
11. Make sure the heater has the proper gas regu-
lator 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 specifi ed on the dataplate at
all times. Contact your gas supplier, or the L.B.
White Co., Inc. if you have any questions.
12. This heater is confi gured for use with propane
vapor withdrawal only. Consult the heater’s dataplate for the gas confi guration of the specifi c
heater. Do not use the heater in an propane
liquid withdrawal system or application. If you
are in doubt, contact the L.B. White Co., Inc.
13. 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.
14. 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 qualifi ed service personnel before
placing the heater back into use.
-- With the main burner in operation, check all
connections, hose connections, fi ttings 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 identifi ed and
repaired before proceeding.
Owner’s Manual • Workman & Norseman
15. For indoor use only. Adequate ventilation shall
be provided in accordance with OSHA 29 CFR
1926.154, Safety Requirements for Temporary
and Portable Space Heating Devices and
Equipment, ANSI A10.10, National Fuel Gas
Code, ANSI Z223.1/NFPA54, Liquifi ed Petro-
leum Gas Code, NFPA 58 or the Natural gas
and Propane Installation Code, CAN B149.1,
as appropriate.
12
Vertical Convection Heaters
Burner Installation
Norseman 200 Plus and Norseman 250
1. Remove the 7/16 hex head screw from underside
of pre-assembled burner. See Fig. 1.
2. Install the burner assembly into the heater’s case
assembly. See Fig. 2.
a. The burner head must be located between upright
tabs in heater’s base.
b. Align tapped hole in burner casting (previously oc-
cupied by hex head bolt) to mounting hole in base.
c. Using a 7/16 in. nut driver or ratchet with 7/16 in.
socket, securely fasten the burner assembly to the
base using the screw removed in step 1.
3. Norseman 200 heaters: Push female terminal on
electrode wire securely onto male terminal of push
button igniter. See Fig. 2.
FIG. 1
Hose and Regulator
Assembly
Propane Gas Heaters
1. Apply a small amount of pipe thread sealant to
threads of rigid hose connection. Connect this end
to to regulator outlet. See Fig. 3. Tighten securely.
Workman 225 shown.
2. Connect opposite end of hose with nut to safety
control valve of heater. See Fig.4. Tighten securely.
(Workman 225 Plus shown.)
FIG. 3
APPLY SEALANT
FIG. 4
7/16 SCREW
FIG. 2
UPRIGHT
TABS
NORSEMAN 200:
ELECTRODE LEAD
CONNECTED TO
PUSH BUTTON
IGNITER
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Owner’s Manual • Workman & Norseman
NORSEMAN 200:
HOLE IN BAFFLE
PLATE
7/16 IN. BURNER
SCREW
NUT HAS LEFT
HANDED THREADS
NOTE:
Norseman 200 & Norseman
250 heaters use a hose with
swivel nuts at both ends.
• Connect one end to safety
control valve at heater.
• Connect opposite end to
hose adapter at regulator
outlet.
Connecting Regulator to
Gas Supply
Vertical Convection Heaters
13
Propane Gas Heaters (Workman 225
Plus, Norseman 200 Plus and Norseman
250)
1. Remove protective cap from POL fi tting. Do not
discard cap. Position regulator as shown to protect
its vent, or install protective cover over the regulator
and cylinder valve.
2. Insert POL fi tting into propane supply valve. See
Fig.5. Thread nut on fi tting counterclockwise into
propane supply valve. Tighten nut securely with a
wrench.
-- When storing or transporting the heater, ensure the
cap is pushed onto the POL fi tting to prevent dam-
age or dirt entry into regulator.
FIG. 5
POL FITTING
REGULATOR VENT DOWN
FIG. 6
GAS INLET
OF HEATER
Natural Gas Heaters (Workman 100 Plus
Natural Gas)
-- Connect the appropriate gas supply line to the inlet
of the regulator located on the heater. See Fig. 6.
This regulator takes an inlet pressure of 13.5 In.W.C.
(3.36 kPa) maximum or a minimum inlet pressure of
7.0 inches W.C. (1.74 kPa) The regulator reduces
the inlet pressure down to 5.1 In. W.C. (1.27 kPa)
for operation.
For inlet pressures exceeding 13.5 In.
W.C. (3.36 kPa), an additional regulator
will be needed upstream of the heater’s
regulator to reduce the higher pressure to
the required inlet pressure.
Owner’s Manual • Workman & Norseman
14
Vertical Convection Heaters
Lighting Instructions
Workman 225 Plus
WARNING
Burn Hazard
■ Before lighting, ensure the variable heat valve
on heater is positioned to the minimum heat
output setting. See Fig. 7.
■ Failure to do so will result in the main burner
igniting at full heat output.
■ Serious injury or death due to burns may
occur.
1. Slowly open the propane gas supply container valve.
(This prevents lockup of the excess fl ow check valve
internal to the regulator’s POL fi tting.)
2. Fully depress the button on the safety control valve
while pushing the igniter button. The burner will light.
See Fig. 7.
FIG. 7
BUTTON ON
SAFETY VALVE
SET VARIABLE
RATE VALVE TO
MINIMUM POSITION
BEFORE LIGHTING
IGNITER BUTTON
FIG. 8
MAXIMUM HEAT
Shut-Down Instructions
1. Close the propane gas supply container valve.
2. Allow the heater to burn off any fuel gas remaining in
the gas supply line.
3. Position the variable rate valve to its minimum heat
position.
4. Disconnect the heater from its gas supply.
■ On new installations it may take a short time for gas
to purge out any air before the burner lights.
3. Keep the valve button depressed for about 30 seconds to allow the thermocouple to warm up.
4. Release the safety control valve button.
5. Once the burner is lit, the variable rate valve can be
positioned to any setting from minimum to maximum
heat. See Fig. 8
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Owner’s Manual • Workman & Norseman
Vertical Convection Heaters
15
Lighting Instructions
Norseman 200 Plus and Norseman 250
WARNING
Burn Hazard
■ Before lighting, ensure the manual main
burner valve is completely closed. See Fig. 9
■ Failure to do so will result in the main burner
igniting at full heat output.
■ Serious injury or death due to burns may
occur.
1. Slowly open the propane gas container valve.
(This prevents lockup of the excess fl ow check valve
internal to the regulator’s POL fi tting.)
2. Norseman 200 Plus:
Fully depress the button on the pilot safety control valve
while pushing the igniter button.
Norseman 250:
Apply a fl ame to the pilot assembly. Then depress the
button on the safety control valve to light the pilot.
■ On new installations it may take a short time for gas to
purge out any air before the pilot lights and stays lit.
3. Once the pilot fl ame is lit, keep the pilot button de-
pressed for about 30 seconds to allow the thermocouple
to warm up.
Shut-Down Instructions
A. To properly shut heater down after normal use, or
when further use is anticipated:
-- Close the manual main burner valve on heater.
The pilot will stay lit.
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.
4. Release the safety control valve button.
5. Slowly open the manual main burner valve located
between the pilot safety control and burner.
FIG. 9
MAIN BURNER VALVE
PILOT ASSEMBLY
IGNITER BUTTON
Owner’s Manual • Workman & Norseman
PILOT BUTTON
16
Vertical Convection Heaters
Lighting Instructions
Workman 100 Plus Natural Gas
1. Follow the instructions on the knob of the safety control
valve knob to light:
-- Turn the knob counter- clockwise (CCW) from OFF to
the PILOT position.
-- Fully depress the knob while repetitively pushing the
igniter’s button.
-- Keep the knob depressed in the PILOT position for
about 30 seconds to allow the thermocouple to warm up.
■ On new installations it may take a short time for gas to
purge out any air before the pilot lights and stays lit.
-- Release the knob on the safety control valve.
-- Turn the knob counterclockwise to ON. The main burner
will light.
FIG. 10
CONTROL
VALVE KNOB
Shut-Down Instructions
A. To properly shut heater down after normal use, or
when further use is anticipated:
-- Turn the knob on the pilot safety control valve to the
PILOT position. The main burner will shut off but
the pilot light will remain lit.
B. To properly shut heater down for storage, or when
further use is not anticipated:
1. Close the fuel supply valve.
2. Allow the heater to burn off any fuel gas remaining
on the gas supply line.
3. Slightly depress the safety control valve’s knob and
turn the knob clockwise to OFF position.
4. Disconnect the heater from its gas supply.
IGNITER BUTTON
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Owner’s Manual • Workman & Norseman
Cleaning Instructions
Vertical Convection Heaters
17
WARNING
Fire, Burn, and Explosion Hazard
■ This heater contains mechanical components
used in the gas management and safety
systems.
■ Such components may become inoperative or
fail due to dust, dirt, wear or aging.
■ Periodic cleaning and inspection as well as
proper maintenance are essential to avoid
serious injury or damage
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, 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 fi re or explosion from
the leak.
Clean all components of the heater with
pressurized air, a dry brush or a dry cloth.
Owner’s Manual • Workman & Norseman
18
Vertical Convection Heaters
Maintenance Instructions
BEFORE EACH USE:
1. Ensure the area surrounding the heater is free
and clear from combustible materials, gasoline, and other fl ammable vapors and liquids.
2. Inspect the gas hose. Replace the gas hose
immediately if nicks or cuts are found.
3. For heaters with a push button igniter, make
sure the wire from the igniter to the electrode
is in good condition, without any nicks or cuts.
Replace the electrode (comes with wire) if
defects are found.
4. Check for gas leaks using approved leak
detectors.
5. Review all heater markings (i.e. warnings,
start-up, shut-down, 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,
start-up and shut-down instructions and warnings are available at no cost.
6. Ensure the proper regulator is matched to
the heater being used. Regulators are set to
different pressures, depending on the design
requirements of the heater. Mis-matching of
the regualtor to the improper heater can result
in over or under fi ring of the heater, resulting
in soot, high levels of carbon monoxide, or
damage to the heater and surrounding area. If
in doubt, contact L.B. White Co.
ANNUALLY:
1. 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 appliance to make sure
that the regulator is reliable.
7. Inspect the regulator to make sure the regulator vent is not blocked. Debris, insects, insect
nests, tar, snow, or ice on a regulator can
block vents and cause excess pressure at the
heater.
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Owner’s Manual • Workman & Norseman
Service Instructions
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, maintenance, or cleaning.
■ Failure to follow this warning will result in burns
causing injury.
Vertical Convection Heaters
WORKMAN 225 PLUS
Burner Manifold/ Orifi ce and Safety
Control valve. See Figs. 11 and 12.
1. Straighten the mounting bracket tabs and remove
thermocouple from safety control valve.
2. Remove the jam nut securing the safety control valve
to its mounting bracket.
3. Pull the safety control with manifold from heater.
19
WARNING
Fire and Explosion Hazard
■ Do not disassemble or attempt to repair any
heater components or gas train components
such as gas valves, or gas hoses.
■ All component parts must be replaced if defects
are found.
■ Failure to follow this warning will result in fi re or
explosions, causing property damage, injury, or
death.
1. Close the fuel supply valve to the heater before
servicing.
2. Disconnect the thermocouple from the safety
control valve when servicing either the pilot safety
control valve or the burner orifi ce.
3. Workman 225 Plus and Workman 100
Plus NG: Remove the heater’s barrel for access
to burner related components.
Norseman 200 Plus and Norseman
250: Remove the 7/16 in. burner retaining screw
from underside of case and pull the burner from
the case when servicing burner components.
4. Disconnect the gas hose if needed for the service
procedure.
4. Replace or clean components as needed.
FIG. 11
BRACKET
FIG. 12
THERMOCOUPLE
JAM NUT
SAFETY VALVE
VARIABLE
RATE
VALV E
ORIFICE
MANIFOLD
5. For reassembly, reverse the respective service
procedure. Ensure gas connections are tightened
securely and leak checked before lighting the
heater.
6. Clean the heater’s orifi ce with compressed air or
a soft, dry rag. Do not use fi les, drills, etc., which
may enlarge the holes, causing combustion problems or burner fl ame extending outside of the case
barrel. Replace the component if its holes cannot
be cleaned properly.
Owner’s Manual • Workman & Norseman
20
Vertical Convection Heaters
WORKMAN 100 PLUS NATURAL GAS
Pilot Orifi ce
1. Remove the thermocouple from the mounting bracket
and loosen the pilot line’ compression fi tting. Care-
fully reposition the pilot line away from the pilot
orifi ce.
2. Remove the screws that secure the burner head to
the heater’s base. See Fig. 13.
3. Slide the burner head off of the base to expose the
pilot and burner orifi ces.
FIG. 13
THERMOCOUPLE
BURNER
HEAD
PILOT HEAD
PILOT ORIFICE
SCREWS
PILOT TUBE
COMPRESSION FITTING
4. Once the burner head has been moved away, use
appropriate wrenches to hold the pilot head in place
while removing the pilot orifi ce.
Safety Control Valve & Gas Regulator:
1. Remove the two hex head screws that secure the
regulator to the upright panel on the heater. See Fig. 15.
FIG. 15
SCREWS
2. Loosen the pilot tube’s compression fi tting at the safety
control valve and carefully reposition the pilot tube away
from the safety control valve. See Fig. 16.
FIG. 16
SAFETY CONTROL
VALV E
Burner Orifi ce:
-- Follow steps 1 through 3 above. Hold the pipe nipple
between the safety control valve and the burner
orifi ce with a pipe wrench while removing the burner
orifi ce with a suitable open end or adjustable wrench.
See Fig. 14 for location of pipe nipple and burner
orifi ce.
FIG. 14
BURNER ORIFICE
PIPE NIPPLE
SCREWS
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Owner’s Manual • Workman & Norseman
REGULATOR
PILOT TUBE
COMPRESSION FITTING
3. Loosen the thermcouple connector nut at the safety
control valve.
4. Pull the complete regulator/safety control valve/burner
orifi ce assembly from the heater. Disassemble as
needed for valve replacement.
Vertical Convection Heaters
21
NORSEMAN 200 PLUS AND
NORSEMAN 250
Burner Orifi ce (See Fig. 17)
1. Disconnect compression nut from brass elbow and
thermocouple from pilot control valve.
2. Carefully reposition pilot line and thermocouple away
from safety control valve.
3. Disassemble the following:
-- Pilot control with manual valve from burner orifi ce
-- Burner orifi ce from burner casting.
4. Clean the burner orifi ce.
FIG. 17
BURNER VALVE
PILOT LINE
COMPRESSION
NUT
ELBOW
THERMOCOUPLE
FIG. 19
PILOT HEAD
PILOT
ORIFICE
SCREEN
COMPRESSION
NUT
BRACKET ASSEMBLY
ELECTRODE
BURNER ORIFICE
VALVE
Safety Control Valve (See Fig. 18)
1. Remove pilot line from safety control valve.
2. Remove thermocouple at safety control.
3. Loosen safety control from manual burner
valve.
THERMOCOUPLE
ELBOW
VALVE
FIG. 18
BURNER ORIFICE
BURNER
VALV E
Pilot Orifi ce (See Fig. 19.)
1. Loosen compression nut at pilot orifi ce and carefully
reposition pilot tube away from the orifi ce.
2. Remove pilot orifi ce from pilot head and screen from
orifi ce inlet.
3. Ensure orifi ce hole is not plugged.
Owner’s Manual • Workman & Norseman
ELBOW
VALV E
22
Vertical Convection Heaters
IGNITER AND ELECTRODE
Workman 225 Plus, Norseman 200 Plus,
and Workman 100 Plus NG
Servicing of the igniter and electrode is needed
when a spark is not observed at the electrode when
pushing the igniter button. This may happen with hard
use over a long period of time, or due to dust and dirt
accumulation.
If you do not see a spark being generated at the
electrode check the following areas:
A. Igniter
1. Remove the wire from the push button igniter.
2. Position a screwdriver tip about 1/8 in. from igniter.
See Fig. 20.
3. Holding the screwdriver by its handle, push the
igniter’s button several times. If spark is not seen,
replace the igniter. If spark is observed, proceed to
electrode servicing.
FIG. 20
REMOVE NUT TO
REPLACE IGNITER
Workman 225 Plus: See Fig. 22
Workman 100 Plus Natural Gas: See Fig. 23
Norseman 200 Plus: See Fig. 24, page 22.
Clean the electrode with emery cloth or steel wool.
FIG. 21
INSULATOR
FIG. 22
TIP G AP: 5/32 I N.
B. Electrode
1. Ensure the wire between the electrode and the
igniter is securely connected.
2. Verify that the electrode’s insulator body is not
cracked and that the electrode rod does not move
within its the body. See Fig. 21. If it does, replace
the electrode.
3. Check the wire for nicks, cuts, or mars. Nicks or
cuts will prevent a spark from being generated at
the electrode tip. Replace the electrode if necessary. The electrode ships with the wire.
4. Electrode tip gap can vary depending on model of
heater. Ensure proper position.
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FIG. 23
CLEAN - USE
EMERY CLOTH
THERMOCOUPLE
ELECTRODE ON CENTER
LINE OF PILOT ORIFICE
FIG. 24
1/16 INSIDE EDGE OF PILOT HEAD
TO SIDE OF ELECTRODE
THERMOCOUPLE - ALL MODELS
The thermocouple may need replacement if the burner
goes out after allowing the thermocouple to heat up for
an extended period of time.
1. Workman 225 Plus and Workman 100
Plus Natural Gas: Pull back on the thermocouple
to disengage its mounting clip from the support
bracket. See Fig. 25, Workman 225 Plus shown.
FIG. 25
Vertical Convection Heaters
FIG. 27
■ For thermocouples using a mounting clip, ensure
the thermocouple is completely pushed into its
bracket when replacing. Failure to do so may
cause burner outage.
■ When connecting the thermocouple to the safety
control valve, thread the thermocouple fi nger tight
to the valve, then snug it in with a wrench.
To determine if the thermocouple is defective:
Connect an ohm meter between the ends of the
thermocouple.
-- A good thermocouple will show some level of
resistance from end to end.
23
NUT
2. Norseman 200 Plus and Norseman 250:
Use a wrench and loosen the attachment nut at the pilot assembly. See Fig 26, Norseman 200 Plus shown.
FIG. 26
NUT
3. Loosen the thermocouple connector nut which is
threaded into the safety control valve. See Fig. 27,
Workman 225 Plus shown. Remove the thermocouple.
Owner’s Manual • Workman & Norseman
-- A defective thermocouple will show an open
circuit on the ohm meter
24
Vertical Convection Heaters
GAS PRESSURE CHECKS
■ This procedure is to be done once a year prior to the
heating season, anytime the heater is moved from one job
location to the next, or after servicing the heater.
MATERIALS REQUIRED
See the list of materials required as follows, depending on
the heater to be checked. Secure these materials through
local purchase.
Quantity Description
1 High Pressure Gas Gauge capable of reading
up to 30 PSIG (Use for Workman 225,
Norseman 200, and Norseman 250 heaters)
OR
Low pressure gauge capable of reading up to
35 inches water column (Use for Workman 100
Plus natural gas ONLY)
1 1/8 in. black iron street ell. (Required for
Workman 225 Plus heaters ONLY)
1 1/4 in. x 2 in. pipe nipple (Required for
Norseman 250 heaters ONLY.)
1 1/4 in. black iron tee (Required for
Norseman 250 heaters ONLY)
A. PREPARATION- ALL HEATERS
1. Close fuel supply valve at propane gas supply
container.
FIG. 28
CAP
2. Install a 1/8 in. street ell and pressure gauge at this
point. See Fig. 29.
FIG. 29
1/8 IN
STREET
ELL
2. Allow heater to burn off gas remaining in it’s gas
supply lin e.
3. Allow heater to cool.
4. Workman 225 Plus: Position the variable heat valve
to its lowest setting.
Norseman 200 Plus and Norseman 250: Close
the manual main burner valve.
Workman 100 Plus Natural Gas: Position the
knob on the safety control valve to OFF.
B. GAUGE INSTALLATION
Workman 225 Plus:
1. Using an wrench, remove the cap from the safety control
valve as shown in Fig. 28.
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Owner’s Manual • Workman & Norseman
Norseman 200 Plus:
1. Using a 3/16 in. allen wrench, remove the hex plug
from valve inlet. See Fig. 30.
FIG. 30
PLUG
Vertical Convection Heaters
25
2. Attach the pressure gauge to this point.
3. Open fuel supply valve to heater.
Norseman 250
1. Remove hose adapter from inlet of pilot safety control
valve.
2. Connect the following materials together in the order
as given and tighten securely. See Fig. 31.
-- Tee to inlet of pilot safety control.
-- Nipple to tee.
-- Hose adapter (as removed earlier) to nipple.
-- Gas hose to hose adapter.
3. Connect gauge to tee.
4. Open fuel supply valve to heater.
FIG. 31
HIGH PRESSURE GAUGE
PILOT
CONTROL
VALVE
TEE
HOSE ADAPTER
(FROM PILOT VALVE INLET)
NIPPLE
HOSE
2. Attach the low pressure (0-35 in. water column)
gas gauge to this location.
3. Open the fuel; supply valve to the heater.
C. READING PRESSURES
1. Light the heater. With the heater operating, the
pressure gauge should read the pressure specifi ed
on the dataplate or in the specifi cation section of
this owner’s manual.
2. Does the pressure reading at the inlet of the safety
control agree with that given on the dataplate? If
so, no further checking or adjustment is required.
Proceed to section D.
3. If the inlet pressures do not agree with that specifi ed on the dataplate, then check the following:
-- Improper regulator for heater.
-- Regulator out of adjustment.
(Replace if necessary).
-- Blockage in gas hose.
-- Insuffi cient size or quantity of propane gas
supply containers.
D. COMPLETION
1. Once the proper pressure has been confi rmed,
close fuel supply valves.
2. Allow heater to burn off fuel remaining in gas
supply line.
Workman 100 Plus Natural Gas:
1. Using a 3/16 in. allen wrench, remove the pressure tap
plug at the top on the regulator located on the heater.
See Fig. 32.
FIG. 32
PLUG
Owner’s Manual • Workman & Norseman
3. Norseman 250: Remove gauge, hose adapter,
nipple, and tee. Reconnect hose adapter to inlet of
safety control valve and hose to hose adapter.
Workman 225 Plus: Remove gauge and
street ell. Reconnect cap to safety control
valve.
Norseman 200 Plus, Workman 100
Plus Natural Gas: Install pressure tap plug
on heaters.
4. Tighten all connections securely. Open the fuel
supply valve and check for gas leaks with appropriate leak detectors.
5. Light the heater and check for proper operation.
26
Vertical Convection Heaters
Troubleshooting
PROBLEM CAUSE CURE
1. Burner or pilot will not light.
2. Burner or pilot lights but will
not stay lit when safety
control button is released.
* Propane gas container is empty.
* Fuel supply valves closed.
* Excess fl ow valve in P.O.L. fi tting on propane
regulator is closed.
* Safety control button not fully pushed in.
* Burner or pilot orifi ce is plugged.
* Restriction in gas hose.
* Air in gas line.
* Safety control valve is defective.
* Defective spark igniter or electrode.
* Restriction in gas hose.
* Insuffi ent time allowed for thermocouple to
heat up.
* Loose thermocouple.
* Defective thermocouple.
* Orifi ce is plugged
* Defective safety control valve.
* Improper gas pressure
* Fill container.
* Open fuel supply valves.
* Close propane container valve. Wait 5 min-
utes and open container’s valve slowly.
* Push in button completely.
* Clean or replace orifi ce.
* Remove hose from heater and blow out with
compressed air or replace if necessary.
* Push in safety control valve’s pilot button
(normally 15 -20 seconds is suffi cient) on
control of gas valve to purge air from line
(usually necessary at time of installation).
NOTE: Heaters with push button
Piezo Igniter: Make sure you
are pushing the Piezo igniter button
during this time to prevent gas
accumulation.
* Replace safety control valve.
* Refer to the igniter and electrode service
instruction section for problems associated
with these parts.
* See remedy for same cause in Problem #1
* Hold in control button for 30 seconds to allow
proper warm up.
* Tighten thermocouple at gas control. Make
sure it is securely pushed into its bracket.
Tighten fi nger tight and snug the contact nut
with an appropriate wrench.
* Replace the thermocouple
* See remedy for same in Problem #1
* Replace safety control valve.
* Set pressure according to pressure on
dataplate.
3. Burner fl ame lifting off
burner.
4. Heater not delivering maximum heat output.
5. Electrode does not
provide spark
* Fuel pressure set too high.
* Blockages in burner orifi ce or at primary air
inlets of burner.
* Gas supply valves not fully open.
* Burner orifi ce plugged.
* Low fuel supply pressure.
* WORKMAN 225 PLUS: Variable rate valve
not positioned to maximum
* NORSEMAN 200 OR NORSEMAN 250:
Main burner valve not fully open.
* Improper spark gap.
* Defective electrode or electrode lead.
* Defective push button igniter.
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Owner’s Manual • Workman & Norseman
* Set pressure according to pressure on
dataplate
* Clean area with soft brush, dry cloth, or
compressed air.
* Open valves completely.
* Clean burner orifi ce with compressed air or
replace.
* Consult propane gas supplier. Cylinder or
tank needs replacement or refi ll. Regulator
needs adjustment. Check for use of proper
regulation and fuel gas.
* Position the valve to maximum
* Open the manual main burner valve
completely.
* Set spark gap to instructions.
* Replace electrode.
* Replace igniter
Vertical Convection Heaters
Heater Component Function
27
BARREL w/ TOP (CASE)
Upright sheet metal case component. Acts as a
chimney to distribute heat to surrounding area.
BASE
Sheet metal case platform used to support and
stabilize burner and barrel assemblies.
BURNER
Component at which combustion of fuel gases
takes place.
BURNER ORIFICE
Metering device used to feed gas to burner at a
specifi c rate, with the appropriate pressure.
ELECTRODE
Ignites gas by spark. Receives spark voltage from
piezo igniter.
GAS HOSE
Flexible connector used to convey gas from supply
line or cylinder to heater.
PIEZO IGNITER
Generates ignition voltage when igniter button is
pushed. This voltage is sent to electrode to provide
spark.
PILOT LIGHT ORIFICE
A metering device used to supply gas for the dual
purpose of igniting the main burner and heating the
thermocouple.
THERMOCOUPLE
A thermoelectric device that converts heat directly into electrical energy. Works in conjunction
with electromagnet in gas control valve thereby
assisting in maintaining gas supply for the pilot
light.
VARIABLE RATE VALVE
A manually adjsuted valve that allows the user to
operate the heater from its lowest to highest heat
output, or anywhere in-between.
PILOT TUBE
Formed copper tube used to convey gas from the
safety control valve to the pilot light orifi ce.
REGULATOR
The heart of any gas supply installation. Used to
deliver a working pressure to the appliance under
varying conditions in tank pressure.
SAFETY CONTROL VALVE
A gas control valve which is held open by electrical
power supplied by the thermocouple and which
closes automatically to shut off the fl ow of gas to
the main burner when fl ame is extinguished or is
too small to heat the thermocouple.
Owner’s Manual • Workman & Norseman
28
Vertical Convection Heaters
Service Parts Identification Schematic
Workman 225 Plus
Item Description Part Number
1 Regulator w/POL Fit ting 550-23463
2 Hose, 1/4 in. / 15 ft. (4.6 m) 550-20708
3 Valve, Safety Control 572506
4 Nut, Jam 572587
5 Valve, Variable Rate 572507
6Orifi ce Manifold 572508
7 Igniter, Piezo 570434
8Thermocouple 571030
9Electrode 572509
10 Barrel w/Top 57250 5
11 B ase 57 2510
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Owner’s Manual • Workman & Norseman
Vertical Convection Heaters
Service Parts Identification Schematic
Norseman 200 Plus and Norseman 250
29
Item Description Part Number
1 Regulator w/POL and Hose Adapter 550-21788
2 Adapter, Hose 500-25790
3 Hose, 1/4 in. x 15 ft. (4.6m) 550 -2050 0
4 Adapter, Hose, w/ Pressure Tap Plug 500-23633
5 Valve, Pilot Safety 500-20356
6Thermocouple 571823
7Orifi ce Burner (Norseman 20 0 Plus) 571582
(Norseman 250) 571573
8 Bracket, Pilot (Nor seman 20 0) 571584
(Norseman 250) 571574
Owner’s Manual • Workman & Norseman
30
Vertical Convection Heaters
9 Head, Pilot w Orifi ce 571048
10 Case, Assembly w Labels (Norseman 200 Plus) 500-23373
(Norseman 250) 500-22338
11 O ri fi ce, Pilot w/Screen 571577
12 Tube, Pilot w/Nuts & Sleeves 520529
13 Valve, Man ual Burner 570963
14 Igniter (Norseman 20 0 Plus) 570434
15 Electrode w/Wire (Norseman 200 Plus) 571068
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