L.B. White CR125AZPA220206, CR125AZNA220207 User Manual

Propane Vapor Withdrawal
Natural Gas
MODELS OUTPUT FUEL CR125AZPA220206 125,000 Btuh CR125AZNA220207 ( 36.6 kW)
Congratulations!
You have purchased the finest radiant 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 1-800-345-7200.
Owner's Manual and Instructions
Sun Blast™ Radiant Construction Heaters
View this manual online at www.lbwhite.com
150-29533
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4009176
ATTENTION ALL USERS
This heater has been tested and evaluated by ETL in accordance with Standard ANSI Z83.7CSA 2.14 and is listed and approved as a direct fired construction heater for use on combustible floors. This heater is intended for use as a portable, temporary heater for buildings under construction, alteration, or repair. If you are considering using this product for any application other than its intended use, then please contact your fuel gas supplier, or the L.B. White Co., LLC
WARNING
Fire and Explosion Hazard
Not for home or recreational vehicle use.
Installation of this heater in a home or
recreational vehicle may result in a fire or explosion.
Fire or explosions can cause property
damage or loss of life.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
WARNING
Fire and Explosion Hazard
Keep solid combustibles a safe distance
away from the heater.
Solid combustibles include wood or paper
products, building materials, and dust.
Do not use the heater in spaces which
contain or may contain volatile or airborne combustibles.
Volatile or airborne combustibles include
gasoline, solvents, paint thinner, dust particles or unknown chemicals.
Failure to follow these instructions may
result in a fire or explosion.
Fire or explosions can lead to property
damage, personal injury or loss of life.
GENERAL HAZARD WARNING
Failure to comply with the precautions and instructions provided with this heater, can result in:
Death — Serious bodily injury or burns — Property damage or loss from fire or explosion — Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning — Electrical shock
Read this Owner’s Manual before installing or using this product.
Only properly-trained service people should repair or install this heater.
Save this Owner’s Manual for future use and reference.
Owner’s Manuals and replacement labels are available at no charge. For assistance, contact
L.B. White at 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.
2
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.
SECTION
PAGE
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Hose and Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Connecting Regulator to Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Handle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Moving the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Service Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Safety Control Valve and Burner Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Pilot Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Thermocouple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Igniter and Electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Tip-over Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Parts Identification
Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Warranty Policy, Replacement Parts, and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Table of Contents
General Information
3
Contact your local L.B. Co., LLC for assistance, or if you have any questions
about the use of the equipment or its application.
The L.B. White Co., LLC has a policy of continuous product improvement. It reserves the right to change
specifications and design without notice.
White distributor or the L.B. White
Input - BTUH (kW) 125,000 (36.6)
10.0 (2.50) 5.55 (1.38)
5.80 lbs.(2.63 kg) 125 cu. ft. (9.3 m3)
15 1/4 x 15 1/4 x 34 1/4 (38.7 x 38.7 x 87)
TOP 5 (1.52) SIDES 5 (1.52)
US: 6 ft. (1.83) CANADA: 10 (3.05)
N/A
SPECIFICATIONS
CR125
Propane Natural
Gas Gas
Model
Dimensions - Inches (cm) L x W x H
Minimum Safe Distances From Nearest Combustible Materials Feet (Meters)
Fuel Consumption Per Hour
4
Heater Specifications
Fuel
Burner Manifold Pressure - in. W.C. (kPa)
GAS SUPPLY
LP GAS NATURAL GAS
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.
Natural gas is lighter than air and can collect around
rafters or ceilings.
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.
WARNING
Do not use this heater for heating human living
quarters, workshops, garages, or other such confined spaces.
Do not use in unventilated areas.
The flow of combustion and ventilation air must not be
obstructed.
Proper ventilation air must be provided to support the
combustion air requirements of the heater being used.
Lack of proper ventilation air will lead to improper
combustion.
Improper combustion can lead to carbon monoxide
poisoning leading to serious injury or death. Symptoms of carbon monoxide poisoning can include headaches, dizziness and difficulty in breathing.
Proper ventilation air for combustion must be provided
in accordance with OSHA 29 CFR 1926.154, Temporary Heating Device, ANSI A10.10, Safety Requirements for Temporary and Portable Space Heating Devices, or the Natural Gas and Propane Installation Code, CAN/CSA B149.1 as appropriate.
Asphyxiation Hazard
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 filter the odorant.
Propane gas odor may differ in intensity at different
levels. Since propane gas is heavier than air, there may be more odor at lower levels.
Always be sensitive to the slightest gas odor. If you
continue to detect any gas odor, no matter how small, treat it as a serious leak. Immediately go into action as discussed previously.
5
Safety Precautions
FUEL GAS ODOR
ODOR FADING -- NO ODOR DETECTED
ATTENTION -- CRITICAL POINTS TO REMEMBER!
Propane gas and natural gas have a distinctive odor.
Learn to recognize these odors. (Reference “Fuel Gas Odor” and “Odor Fading” sections above.
If you have not been properly trained in repair and service of propane gas and natural gas fueled heaters, then do not attempt to light heater, perform service or repairs, or make any adjustments to the heater on propane gas or natural gas fuel system.
Even if you are not properly trained in the service and
repair of the heater, ALWAYS be consciously aware of the odors of propane gas and natural gas.
A periodic sniff test around the heater or at the heater’s
joints; i.e. hose, connections, etc., is a good safety practice under any conditions. If you smell even a small amount of gas, CONTACT YOUR FUEL GAS SUPPLIER IMMEDIATELY. DO NOT WAIT!
1. Do not attempt to install, repair, or service this heater or the gas supply line unless you have continuing expert training and knowledge of gas heaters.
Qualifications for service and installation of this equipment are as follows:
a.
To be a qualified gas heater service person, you must have sufficient training and experience to handle all aspects of gas-fired heater installation, service and repair. This includes the task of 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 department or similar government agencies, or your insurance agent can help you determine code requirements.
Also refer to:
-- ANSI/NFPA 58, latest edition, Standard for Storage and Handling of Liquefied Petroleum Gas
-- ANSI Z223.1/NFPA 54, National Fuel Gas Code
-- CAN/CSA B149.1 Natural Gas and Propane Installation Code
3. The heater shall not be directed toward any propane gas container within 20 ft. (6 m).
4. Disconnect the heater from its propane gas supply container when relocating.
5. Do not move the heater while it is in operation.
6. We cannot anticipate every use which may be made of our heater. Check with your local fire safety authority if you have questions about applications.
7. Other standards govern the use of fuel gases and heat producing products in specific applications. Your local authority can advise you about these.
8 Use only compressed air, a soft brush, or dry cloth to
clean the heater and it’s components. Allow the heater to completely cool before cleaning or servicing.
9. Always use approved pipe thread compound suitable for use with propane gas on the threaded connections.
10. Do not block air intakes or discharge outlets of the heater. Doing so may cause improper combustion or damage to heater components leading to property damage.
11. The hose assembly shall be visually inspected before each use of the heater. 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 hose assembly shall be that specified by the manufacturer. See parts list.
12. Check for gas leaks and proper function upon heater installation or when relocating. Refer to leak check instructions within installation section of this manual.
13. This heater should be inspected for proper operation by a qualified service person before each use and at least annually.
14 Always turn off the gas supply to the heater if the
heater is not going to be used.
15. If gas flow is interrupted and flame 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.
16. Minimum propane gas supply cylinder size to be used shall be 100 pounds (45 kg). 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 from the heater and stored in accordance with the Standard and Handling of Liquefied Petroleum Gases, ANSI/NFPA 58, or the Natural Gas and Propane Installation Code, CAN/CSA B149.1 as appropriate .
18. Propane gas supply containers have left handed threads. Always use the appropriate wrench to tighten or loosen the regulator’s P.O.L. fitting at the propane gas container’s supply valve.
6
WARNING
Burn Hazard
Radiant heaters are normally quiet during operation.
Always be aware of your proximity to the radiant
heater during its use.
Do not touch the heater or come within safe
clearances given on dataplate and Owner’s Manual.
Failure to follow this warning can result in ignition of
clothing and burns, causing severe injury.
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. Position heater properly before use. The heater must be installed on a level, flat, horizontal and stable surface when hot or in operation and according to minimum clearances from combustible surfaces such as walls, or ceilings. Do not place combustible materials within this zone of clearance. Minimum safe distances are as follows:
Top to Ceiling: 5 ft. (1.52 m) All Sides: 5 ft. (1.52 m) Gas Supply: U.S. 6 ft. min. (1.83 m)
Canada 10 ft. min. (3.05 m)
3. L.P Gas Installation Requirements
Ensure all L.P. gas containers are secured and
protected from people, tipover, vehicular traffic and contact.
L.P. gas containers must be located on a flat,level,
and stable surface.
Contact your local authorities, L.P. gas dealers, or fire marshalls for specifics 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 traffic. Protect hoses with a shielding device of suitable nature to protect the hose from traffic and movement or other construction equipment.
5. The 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.
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 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.
8. Check all connections for gas leaks using approved gas leak detectors. Gas leak testing is performed as follows:
-- Check all pipe connections, hose connections, fittings and adapters upstream of the gas control with approved gas leak detectors.
-- In the event a gas leak is detected, check the components involved for cleanliness and proper application of pipe compound before further tightening.
-- Furthermore tighten the gas connections as necessary to stop the leak.
-- After all connections are checked and any leaks are stopped, turn on the main burner.
-- Stand clear while the main burner ignites to prevent injury caused from hidden leaks that could cause flashback.
-- With the main burner in operation, check all connections, hose connections, fittings and joints as well as the gas control valve inlet and outlet connections with approved gas leak detectors.
-- If a leak is detected, check the components involved for cleanliness in the thread areas and proper application of pipe compound before further tightening.
-- Tighten the gas connection as necessary to stop the leak.
WARNING
Fire or explosion hazard.
Can cause property damage, severe injury or death.
1. To avoid dangerous accumulation of fuel gas, turn off the gas supply at the heater service valve before starting installation, and perform gas leak test after completion of installation.
2. Do not force the safety gas control button. Use only normal hand pressure to depress the button. Never use any tools. If the button will not operate by normal hand pressure, the control should be replaced by a qualified service technician. Force or attempted repair may result in fire or explosion.
7
Installation Instructions
GENERAL
WARNING
Fire and Explosion Hazard
Do not use open flame (matches, torches, candles,
etc.) in checking for gas leaks.
Use only approved leak detectors.
Failure to follow this warning can lead to fires or
explosions.
Fires or explosions can lead to property damage,
personal injury or loss of life.
Connect end of hose with nut to the hose adapter at
gas inlet of heater. See Fig. 1. Tighten securely.
FIG. 1
-- If necessary, replace the parts or components involved if the leak cannot be stopped.
-- Ensure all gas leaks have been identified and
repaired before proceeding.
8
HOSE AND REGULATOR ASSEMBLY
CONNECTING REGULATOR TO GAS SUPPLY
Ensure regulator is installed under a protective cover
L.P Gas Regulator:
Insert POL fitting into propane supply valve. See Fig. 2.
Thread nut on fitting 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 fitting to prevent damage to the POL or dirt entry into regulator.
Natural gas regulator: Maximum inlet pressure: 13.5 in.WC.(3.36 kPa) Minimum inlet pressure 7.0 in.W.C. (1.74 kPa)
Connect the regulator to natural gas supply. Regulator
outlet is 3/8 in. NPT female.
FIG. 2
HOSE AND REGULATOR ARE PREASSEMBLED
HOSE ADAPTER
9. A qualified service agency must check for proper operating gas pressure upon installation of the heater.
10. Light according to instructions on heater or within owner's manual.
11. 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., LLC if you have any questions.
12. This heater is configured for use with propane vapor withdrawal only. Consult the heater’s dataplate for the gas configuration of the specific 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., LLC.
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 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 qualified service
personnel before placing the heater back into use.
Install the handle as shown in Figs. 3 and 4.
FIG. 4
WARNING
Burn Hazard
Do not operate the heater with the handle
installed.
Gripping the handle while the heater is operating
or after the heater has been shut down can result in burns, causing injury.
HANDLE
WHEELS
The wheels are assembled to the inside of the
heater’s base for shipping.
Disassemble the wheels and reassemble to the
outside of the heater’s base as shown in Fig. 5.
The heater may be tilted for movement
FIG. 5
9
FIG. 3
HANDLE LOCK BRACKET PUSH DOWN TO LOCK IN PLACE
NUTS LOCKWASHERS SCREWS
10
Lighting Instructions
1. Slowly open the fuel supply valve at the gas supply. (This prevents lockup of the excess flow check valve internal to the regulator’s POL fitting.)
2. Rotate the knob on the safety control so the white line on the knob aligns to PILOT on the safety control. Fully depress the knob while pushing the piezo igniter button. The pilot will light. See Figs. 6 and 7.
FIG. 6
3. To observe the pilot, move the pilot viewing cover to the side. see Fig. 7.
FIG. 7
4. Keep the knob depressed 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 burner lights.
5. Release the knob. The pilot should stay lit.
4. Once the pilot is lit, position the knob to ON as indicated by the knob’s arrow.
Shut-Down Instructions
1. Close all fuel gas supply valves.
2. Allow the heater to burn off any fuel gas remaining in the gas supply line.
3. Turn the knob on the safety control to OFF. See Fig. 6. (Push the safety control knob slightly and then turn to OFF position.
4. Disconnect the heater from its gas supply.
PIEZO IGNITER BUTTON
VIEWING COVER
SAFETY CONTROL
11
1. The area surrounding the heater shall be kept clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
2. The regulator must be periodically inspected to make sure its vent is not blocked. Debris, insects, insect nests, snow, or ice on a regulator can block vents and cause excess pressure at the heater.
3. A regulator can wear out and function improperly. Have your gas supplier check delivery pressures to the appliance to make sure that the regulator is reliable.
Before each use give the heater a general cleaning.
WARNING
Do not use water or liquid cleaning solution when cleaning. Use of water, or liquid cleaning solution on the control components can cause severe personal injury or property damage due to water and/or liquids:
* On gas control valves causing corrosion which can
result in gas leaks and fire or explosion from the leak.
Clean the heater with pressurized air, a dry brush, or a dry cloth.
Cleaning Instructions
Maintenance Instructions
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.
Allow the heater to cool completely before cleaning or maintenance.
4. Check any heater wiring for corrosion, frayed or cut insulation, tight connections, etc. Repair or replace
as necessary.
5. Review the heater’s instruction label at the time of maintenance for legibility. Make sure it is not cut, torn, or otherwise damaged. Any damaged label must be replaced immediately by contacting the L.B.
White Co., LLC.
6. Ensure the gas hose does not have any nicks, or cuts, and its connections are not corroded, or have stripped threads. Replace the gas hose assembly if
necessary. Do not repair.
1. Remove the clamp screw at valve inlet and spread the clamp open. See Fig. 9.
2. Disconnect the thermocouple and the tip switch lead. See Fig. 8.
3. Loosen the pilot tube’s compression fitting at the safety control valve. See Fig. 8.
FIG. 8
4. Remove the three screws securing the manifold to the support plate. See Fig. 8.
5. Remove the valve and manifold assembly from the heater. Replace or clean parts as needed. See Fig. 9.
FIG. 9
1. Close the fuel supply valve to the heater before servicing unless necessary for your service procedure.
2 Disconnect the gas hose if needed for the service
procedure.
3. For reassembly, reverse the respective service procedure. Ensure gas connections are tightened securely.
4. After servicing, start the heater to ensure proper operation and check for gas leaks.
5. Clean the heater’s burner and pilot orifices with compressed air or a soft, dry rag. Do not use files, drills, etc., which may enlarge the holes, causing combustion/ignition problems. Replace the component if it cannot be cleaned properly.
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 any
service.
Failure to follow this warning will result in burns
causing injury.
12
Service Instructions
GENERAL
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
explosions, causing property damage, injury, or death.
SAFETY CONTROL VALVE and BURNER ORIFICE
CLAMP SCREW
SAFETY CONTROL VALV E
BURNER ORIFICE
MANIFOLD
PILOT TUBE COMPRESSION FITTING
DISCONNECT LEAD FROM TIP SWITCH TO SAFETY CONTROL
THERMOCOUPLE
MANIFOLD SCREWS
PILOT ORIFICE
A plugged orifice creates a poor pilot flame, leading to pilot outages. The pilot flame should impinge on the thermocouple tip as shown in Fig. 10. If the pilot flame appears weak, the pilot orifice may require cleaning or replacement. Refer to the following instructions.
1. Remove the screws from the side panel at the lower section of the burner. See Fig.11.
FIG. 10
FIG. 12
2. Loosen the pilot tube’s compression fitting at the pilot orifice. See Fig.11.
3. Remove the pilot orifice from the pilot bracket. See Fig. 11.
4. Hold the orifice up to light and verify if both pilot holes are open. If plugged, use only air to clean the orifice. Replace if necessary. See Fig. 12 for comparison of propane and natural gas orifices and hole location.
FIG. 11
13
3/8 in. (9.5 mm) to
1/2 in. (12.7 mm)
THERMOCOUPLE
PILOT FLAME
PILOT ORIFICE
PILOT TUBE
THERMOCOUPLE
The thermocouple may need replacement if the burner goes out after allowing the thermocouple to heat up for an extended period of time. Normal time for thermocouple warm-up is 30 seconds to 1 minute
To determine if the thermocouple is defective:
-- Connect tip switch leads together with a jumper.
-- Connect an ohm meter between the thermocouple tip and its contact button (previously connected to safety control)
-- A good thermocuple will give some level of resisitance from end to end.
-- A defective thermocouple will show an overload or infinite resistance on the ohm meter.
1. If replacing, remove the side panel from lower section of the burner. See Fig. 11 above.
2. Remove the thermcouple from the pilot bracket. See Fig. 13.
3. Loosen the opposite end of the thermouple at the safety control valve.
When reinstalling, ensure the thermocouple’s
attachment nut is completely threaded into the pilot bracket. This ensures proper thermocouple position relative to pilot flame. Failure to do so may cause pilot outage.
When connecting the thermocouple to the safety
control valve, thread the thermocouple finger tight to the valve, then snug it in with a wrench.
FIG. 13
THERMOCOUPLE
NATURAL GAS PROPANE GAS
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