Owner's Manual and Instructions

Dual Fuel Construction Heater

MODELS

TS350

OUTPUT (Btuh)

350,000

FUEL

L.P. Vapor

Withdrawal or

Natural Gas

Certification by:

Congratulations!

You have purchased the finest circulating 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.

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 and is listed and approved as a ductable 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.

150-24034-C

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 1-800-345-7200.

WARNING

■

Proper gas supply pressure must be provided to the inlet of the heater.

■

Refer to data plate for proper gas supply pressure.

■

Gas pressure in excess of the maximum inlet pressure specified at the heater inlet can cause fires or explosions.

■

Fires or explosions can lead to serious injury, death, or building damage.

■

Gas pressure below the minimum inlet pressure specified at the heater inlet may cause improper combustion.

■

Improper combustion can lead to asphyxiation or carbon monoxide 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.

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.

2

Table of Contents

SECTION PAGE

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Installation Instructions

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Gas Supply Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Connecting Hose to Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Connecting Regulator to Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Installation of Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Inside Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Outside Structure (Using air distribution accessories) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

A. Extendable Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

B. End Diffuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Gas Selector Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Service Instructions

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Belt Tensioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Fan and Motor Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Drive Component Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Air Proving Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Igniter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Testing the Manual Reset High Limit Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Burner Orifice and Gas Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Fan Wheel, Bearings, and Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Electrical Connection and Ladder Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229

Parts Identification

Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 & 32

Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3

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.

Heater Specifications

SPECIFICATIONS

Fuel Type

Maximum Input (BTUH)

Ventilation Air Required to Support

Combustion (CFM)

Inlet Gas Supply Pressure

Acceptable at the Inlet of the Heater for Purpose of

Input Adjustment (in.W.C.)

MAX.

MIN.

Burner Manifold Pressure (in.W.C.)

Fuel Consumption Per Hour

Motor Characteristics

4

Blower Speed

Electrical Supply (Volts/Hz/Phase)

STARTING

Amp Draw

CONTINUOUS

OPERATION

Dimensions (Inches)

L x W x H

Minimum Safe

Distances From

Nearest

Combustible

Materials

Net Weight

Shipping Weight

Minimum Ambient Temperature in Which Heater May Be Used

TOP

SIDES

BACK

BLOWER

OUTLET

GAS

SUPPLY

Propane

Gas

M de

TS350

350,000

2,400

13.5

11.0

5.2

Natural

Gas

11.0

5.3

16.2 lbs.

350 cu.ft.

Ball Bearing

1 H.P. / 1,725 RPM

915 RPM

115/60/1

35.0

14.0

48 x 22 ¼ x 32 ¾

1 ft.

1 ft.

1 ft.

6 ft.

Propane Gas

10 ft., 3.04 m

295

310

- 20º F

Safety Precautions

WARNING

■

Do not use this heater for heating human living quarters.

■

Do not use in unventilated areas.

■

The flow of combustion and ventilation air must not be obstructed.

■

Proper ventilation air must be provided to support the combustion air requirements of the heater being used.

■

Refer to the specification section of the heater’s

Owner’s Manual, heater dataplate, or contact the L.B.

White Company to determine combustion air ventilation requirements of the heater.

■

Lack of proper ventilation air will lead to improper combustion.

■

Improper combustion can lead to carbon monoxide poisoning leading to serious injury or death. Symptoms of carbon monoxide poisoning can include headaches, dizziness and difficulty in breathing.

■

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.

FUEL GAS ODOR

made oodorants aadded sspecifically ffor ddetection oof ffuel ggas lleaks.

If aa ggas lleak ooccurs, yyou sshould bbe aable tto ssmell tthe ffuel ggas.

SIGNAL TTO G

■

Use your neighbor’s phone and call your fuel gas supplier and your fire department. Do not re-enter the building or area.

■

Stay out of the building and away from the area until declared safe by the firefighters and your fuel gas supplier.

■

FINALLY, let the fuel gas service person and the firefighters check for escaped gas. Have them air out the building and area before you return. Properly trained service people must repair the leak, check for further leakages, and then relight the appliance for you.

■

Some ppeople ccannot ssmell w man-m

Some ppeople ccannot made cchemical aadded tto must ddetermine iif yyou ccan smell tthe oodorant iin tthese ffuel ggases.

■

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.

ODOR FADING -- NO ODOR DETECTED

■

The oodorant iin ppropane ggas aand nnatural ggas iis ccolorless and tthe iintensity oof iits oodor ccan ffade uunder ssome 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 bbe ssensitive tto tthe sslightest ggas oodor. 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

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.

Refer to the following:

-- ANSI/NFPA 58, Latest Edition, Standard for

Storage and Handling of Liquefied Petroleum

Gas and/or

-- ANSI Z223.1/NFPA 54, National Fuel Gas

Code

-- ANSI/NFPA 70, National Electrical Code.

3. We cannot anticipate every use which maybe made of our heaters. Check with the local fire safety authority if you have questions about applications.

4. Do not wash the interior of the heater. Use only compressed air, a soft brush or dry cloth to clean the interior of the heater and it’s components.

6

5. For safety, this heater is equipped with manual reset high limit switches, an air-proving switch and a redundant gas control valve. Never operate the heater with any safety device that has been bypassed. Do not operate this heater unless all of these features are fully functioning.

6. Do not locate fuel gas containers or fuel supply hoses within 20 ft. of the heater’s blower outlet.

7. 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.

8. 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.

9. This heater is equipped with a gas selector valve. The selector valve must be properly positioned for the gas supplied to the heater. Further information on this feature is provided on page 13 of this manual.

10. 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.

11. This heater should be inspected for proper operation by a qualified service person before each use and at least annually.

12. 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.

13. 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.

14. If gas flow is interrupted and flame goes out, do not relight the heater until you are sure that all gas that may have accummulated has cleared away. In any event, do not relight the heater for at least 5 minutes.

14. The heater requires a minimum 500 gallon propane tank for proper gas supply pressure and operation. A larger tank may be required depending upon operating conditions at the site.

15. When the heater is to be stored indoors, the connection between the propane gas supply container and the heater must be disconnected. The container must be removed from the heater and stored in accordance with the Standard for the

Staorage and Handling of Liquefied Petrolem Gases,

ANSI / NFPA 58.

17. Propane gas supply containers have left handed threads. Always use the appropriate wrench to make a connection to tighten or loosen the pigtail connector’s P.O.L. fitting at the container’s gas supply valve.

WARNING

■

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.

■

Do not force the gas control knob. Use only your hand to turn the gas control knob. Never use any tools. If the knob will not operate by normal hand pressure the gas control valve should be replaced by a qualified service technician. Force or attempted repair may result in fire 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 qualified service agency for repair or replacement.

2. Make sure the heater is level and properly positioned before use. Observe and obey all minimum safe distances of the heater to the nearest combustible materials. Safe distances are given on the heater dataplate and on page 4 of this manual.

3. This heater may be installed either indoors or outdoors. For outdoor installations, only the following air distribution devices may be used:

-- 18 in. Dia. x 12 ft. Duct: Part # 22841

-- End Diffuser: Part # 23054

NOT U

FIELD FFABRICATED D

4. The heater’s gas pressure regulator (with pressure relief valve) must be protected from adverse weather conditions (rain, ice, snow) as well as from building materials (tar, concrete, plaster, etc.) which can affect safe operation and could result in property damage or injury.

5. Heaters used in the vicinity of combustible tarpaulins, canvas, plastics, wind barriers, or similar coverings shall be located at least 10 feet from the coverings.

The coverings shall be securely fastened to prevent ignition or upsetting of the heater due to wind action on the covering or other material.

6. Check all connections for gas leaks using approved gas leak detectors. Gas leak testing is performed as follows:

Installation Instructions

GENERAL

WARNING

■

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 death.

-- 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.

-- Ensure all gas leaks have been identified and repaired before proceeding.

7. A qualified service agency must check for proper operating gas pressure upon installation of the heater.

8. Light according to instructions on heater or within owner's manual.

9. 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.

7

10. This heater is configured for use for L.P. gas vapor withdrawal. Do not use the heater in an L.P. gas liquid withdrawal system or application. If you are in doubt, contact the L.B. White Co., Inc.

11. The heater must be installed so as not to interfere with or obstruct normal exits, emergency exits, doors and walkways.

12. Railing, fencing or suitable substitute materials must be used to keep the heating equipment from any people using and visiting the structure.

13. The heater shall be located so that rain, ice, or snow drainage from the structure does not af fect equipment operation. If the heater is mounted outside, it must be mounted above any pooled or standing water. If the unit is to be located on the ground, a surrounding trench is recommended to drain any rain, ice or snow away from the unit.

4. The ground and surrounding terrain must be cleared of any combustible vegetation and other combustible materials when the heater is utilized outside.

15. 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.

16. 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.

17. 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.

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 in northern climates where cold weather and high humidity are prevalent in the winter.

If more or less favorable conditions prevail at a specific site, adjustments can be made on the basis of experience.

Reeccoom Gaass S

Propane Supply Tank:

500 gallon

1,000 gallon

Heater(s)/Container:

1

2

If more than one gas supply container is used per heater, the containers must be manifolded together to allow vapor withdrawal simultaneously from multiple containers.

Manifold system shall be in accordance with NFPA 58.

CONNECTING HOSE TO HEATER

1. Thread swivel to connector at gas inlet of heater. See

Fig. 1. Tighten securely.

2. The hose may be coiled up and hung on the hose hanger, with the regulator stored within the regulator storage bracket.

FIG. 1

SWIVEL

8

1. Open the tank’s cover.

2. Assemble bushing, pigtail connector and regulator as shown. Tighten connections securely. See Fig. 2.

3. Form the connector to ensure the regulator will be supported by the tank, and the tank valve cover will protect the regulator from weather conditions.

FIG. 2

4. Thread connector’s POL fitting counter-clockwise into

CONNECTING REGULATOR TO GAS SUPPLY

the tank valve. Tighten securely. See Fig. 2.

5. Open the tank valve.

6. Check all connections with an approved leak detector.

Close the tank cover.

7. When storing or transporting the heater, ensure the connector’s fitting is protected from damage and dirt entry.

3/4x 1/4 BUSHING

POL

--The regulator only should be used if the supply pressure to the heater is above the maximum inlet pressure stated on the heater’s dataplate.

---Connect the regulator to the natural gas supply line.

Gas supply pressure to the regulator must be a minimum of 2 PSI.

PIGTAIL CONNECTOR

9

Installation of Heater

INSIDE STRUCTURE

FIG. 3

500 GALLON

GAS SUPPLY

(MINIMUM)

SIDE WALL

MINIMUM SAFE DISTANCE FROM

TOP, SIDES, AND BACK OF HEATER

TO COMBUSTIBLES IS 1 FOOT

MINIMUM SAFE DISTANCE

FROM GAS SUPPLY TO HEATER

DISTANCE FROM HEATER TO SIDE WALL MUST

COMPLY WITH LOCAL CODES, AND BE ACCORDING

TO MANUFACTURER'S REQUIREMENTS

OUTSIDE STRUCTURE

(Air Distribution Accessories)

Duct K

Accessory # 22841

1.. Extend the factory assembled duct kit to full length.

2. Mount duct to blower outlet of heater by inserting tabs on duct adapter into vertical and horizontal slots located at top and sides of blower outlet. See Fig. 4.

Push down on duct adapter to secure adapter into outlet slots. See below for for typical installation of heater located at exterior.

FIG. 4

MINIMUM SAFE DISTANCE FROM

BLOWER OUTLET TO COMBUSTIBLES

IS 6 FEET

SLOTS

DUCT ADAPTER

WITH TABS

TAB

DUCT KIT

FIG. 5

500 GALLON

GAS SUPPLY

(MINIMUM)

SIDE WALL

MATERIAL DRAPED

OVER DUCT

10

MINIMUM SAFE DISTANCE

FROM GAS SUPPLY TO

DUCT KIT

DISTANCE FROM HEATER TO SIDE WALL MUST

COMPLY WITH LOCAL CODES, AND BE ACCORDING

TO MANUFACTURER'S REQUIREMENTS

Diffuser tto EExtendable D

Accessory 23054

1. Loosen screw on duct clamp so clamp is easily positioned over ribs at end of flexible duct.

2. Slide duct adapter into duct end. Duct adapter tabs must be facing away from duct and are located at 3,

9 and 12 o’clock positions. See Fig. 6.

3. Tighten screw clamp so adapter is held securely within duct.

4. Insert tabs of adapter into slots on air diffuser back.

5. Push down on adapter so tabs are seated firmly to air diffuser.

6. Locate diffuser under side wall. See Fig. 7.

FIG. 6

FIG. 7

TABS

CLAMP

DUCT ADAPTER

DIFFUSER

TENT SIDE WALL

TENT DRAPED

WITHIN DIFFUSER

CHANNEL

OPTIONAL AIR DIFFUSER

11

Start-Up Instructions

For initial start-up after heater installation, follow steps 1-5.

For normal start-up, set the thermostat above room temperature.

1. Connect electrical cord to an approved electrical outlet.

2. Set thermostat to desired room temperature.

3. A selector switch is located on the back of the heater.

This switch allows you to either heat or ventilate (no heat). See Fig. 8 for selector switch positions.

FIG. 8

b. Position the selector switch to heat. A red light within the switch will come on. The fan motor will start, the igniter will spark and ignition will occur. The thermostat will cycle the heater on or off based upon temperature setting.

B. VVentilation

When the selector switch is positioned to vent, the red light will NOT be on. The fan motor will start, but the igniter will not spark, nor will ignition occur. This feature is used only when air circulation is required.

The heater will not cycle on its thermostat setting. To discontinue the ventilation feature, position the switch to off or heat. a. Open all manual fuel supply valves. Check for gas leaks using an approved leak detector. The gas control valve on the heater has a manual shut-off feature incorporated into the valve assembly. Make sure the indicator on the valve is turned to the on position. See Fig 9.

FIG. 9

Position the switch to midpoint.

ATTENTION

■

It is normal for air to be trapped in gas hose on new installations. The heater may attempt more than one trial for ignition before air is finally purged from line and ignition takes place.

4. The direct spark ignition (DSI) control board within this heater is self-diagnostic. The board works in conjunction with a light emitting diode (L.E.D.) built into the selector switch. The L.E.D. will flash a specific continuous flash pattern depending on a problem that occurs. Match specific flash pattern given by L.E.D. to troubleshooting label applied to inside of burner cap access panel of the heater. The troubleshooting label identifies the causes of the problem as it relates to specific flash pattern and remedies to correct the problem. See also

“Troubleshooting Data” within this Owner’s Manual.

5. Do not exceed input rating stamped on nameplate or manufacturer’s recommended burner orifice pressure for size orifice(s) used. Make certain that the primary air supply to main burner is open and free of dust, dirt and debris for complete, proper combustion.

12

If the heater is to be shut down for cleaning, maintenance, or repair, follow steps 1-5. Otherwise, set the thermostat to

OFF or NO HEAT for standard shut-down.

1. Close the gas supply valve.

2. Allow the heater to burn off any fuel gas remaining in the gas supply line.

3. Set the thermostat to OFF or NO HEAT.

Shut-Down Instructions

4. Position selector switch to OFF

5. Disconnect the heater from its gas and electrical supplies.

Note: When the thermostat cycles the burner off, the fan motor will continue to run for 1 minute, allowing the heat chamber to cool. After 1 minute, the fan motor will shut off.

1. This feature allows the heater to operate on either propane or natural gas without changing out the burner orifice. The gas selector valve is located between the gas control valve and the burner. Gas selection is made by repositioning the valve’s handle.

THIS IS NOT A MANUAL GAS SHUT OFF VALVE. must bbe properly ppositioned ffor tthe sspecific ggas bbeing uused.

FIG. 10

HANDLE POSITION

PROPANE GAS

FIG. 12

Gas Selector Valve

must bbe ffully sset aat 9 flow ((propane ggas) oor pparallel tto ggas fflow ((natural ggas) for pproper ooperation. Do not operate the heater with the valve handle set between either postion, otherwise improper operation will occur.

4. The valve’s handle can be locked to prevent improper positioning. Use the holes provided on the valve’s body and handle. See Fig. 12.

FIG. 11

HANDLE POSITION

NATURAL GAS

Cleaning Instructions

WARNING

■

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: a. Before each use give the heater a general cleaning 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.

b. At least once a year, give the heater a thorough cleaning. At this time, remove the fan and motor assembly and brush or blow off the fan blade assembly. Additionally, make sure the burner air inlet venturi ports and the casting are free of dust accumulation.

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:

■

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.

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.

7. Check the heater’s fan drive belt. Make sure the belt is not cracked. If so, replace it. Additionally, ensure the belt is not slipping, that belt tension is proper and sheaves are properly aligned and not worn. These procedures should be done whenever the heater is being readied for use.

8. Lubricate the bearings once a month. Use NLGI grade 2 mineral oil lithium or lithium base grease.

WARNING

■

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.

WARNING

■

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.

1. Close the fuel supply valve to the heater and disconnect the electrical supply before servicing unless necessary for your service procedure.

2. Clean the heater’s orifice with compressed air or a soft, dry rag. Do not use files, drills, broaches, etc. to clean the orifice hole. Doing so will enlarge the hole, causing combustion or ignition problems. Replace the orifice if it cannot be cleaned properly.

Service Instructions

GENERAL

3. The high limit switches, HEAT/VENT switch, and thermostat can be tested by disconnecting the leads at the component, and jumpering the leads together.:

-- 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..

4. 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

5. Open the respective case panel for access to burner or fan related components.

6. For reassembly, reverse the respective service procedure. Ensure gas connections are tightened securely.

7. After servicing, start the heater to ensure proper operation and check for gas leaks.

8. If sheave or fan keys are lost during ser vice, replacements are made by using 3/16 square x 10 cm. bar stock. Otherwise, order Part #22955.

1. Remove belt guard from heater.

2. Push the belt tensioner clockwise for removal of the belt. See Fig. 13.

FIG. 13

BELT REPLACEMENT

3 Check the fan and motor pulleys for dirt Clean the pulleys if needed.

4. Install new belt. Using a straight edge, check motor and fan pulley alignment. Contact must be made at edges of both pulleys. See Fig. 14.

FIG. 14

STRAIGHT

EDGE

TENSIONER

15

BELT TENSIONER

1. The tensioner automatically applies proper tightness to the belt during operation, and eliminates the need for manually retightening the belt after service.

2. When replacing the belt, and during routine maintenance, ensure tensioner is positioned as shown in Fig.15 after belt removal.

FIG. 15

TENSIONER PARALLEL

TO DIAGONAL SUPPORT

FAN AND MOTOR PULLEYS

1. Remove belt guard from heater.

2. Remove belt from sheaves. See Belt Replacement.

3. Loosen set screw on fan and motor sheaves. See figure for typical set screw location.

4. Remove sheaves and keys from fan shaft and motor.

FIG. 16

SET SCREW

SHAFT KEY

FAN DRIVE COMPONENTS TROUBLESHOOTING

Refer to the following table to identify basic problems, causes and cures associated with V-Belt drive systems.

PROBLEM

Belt sslips

CAUSE

Pulleys worn

(Belts bottoming out in grooves)

Oil or grease on belt

Belt B Improper belt installation

Improper belt tension.

SOLUTION

Replace pulleys

Clean pulleys or belt.

Belt pried over pulleys using sharp or pointed tools. Install new belt properly.

Ensure belt tensioner is positioned properly.

PROBLEM CAUSE

Belt JJumps Drive misaligned

Pulley

Grooves

Dirt entering pulleys

Belt

Cracking

Belt hitting belt guard Realign guard

(check for loose or missing guard screws)

Dirt or grease on belt or aged belt

Belt w Belt hitting belt guard Realign guard rapidly (check for loose or missing guard screws)

Worn pulleys

SOLUTION

Check and realign

Remove belt, clean the pulleys

Remove dirt or replace belt.

Replace pulleys

Dirt in pulleys Remove dirt

16

1. Remove belt guard from heater.

2. Remove fan belt.

3. Remove motor pulley from motor and mounting hardware. See Fig. 17.

FIG. 17

FAN MOTOR

4. Open electrical supply access panel on motor and disconnect power supply wiring. See Fig. 18.

FIG. 18

HARDWARE

■

Ensure motor and fan pulleys are properly aligned before tightening pulleys to motor shaft.

■

Refer to alignment procedures within manual

■

Motor bearings are permanently lubricated.

AIR PROVING SWITCH

1. Remove the mounting screws. Turn switch assembly so the paddle on the switch arm can be pulled through oblong hole on side of fan housing. See Fig.

19.

2. Disconnect the leads from the air proving switch.

FIG. 19

OBLONG HOLE

17

IGNITER ASSEMBLY

1. Remove burner access panel. See Fig. 20.

FIG. 20

3. Disconnect high voltage ignition lead from igniter assembly. Remove the screws. See Fig. 22.

FIG. 22

SCREWS

IGNITION

LEAD END

2. The igniter assembly is located at the top of the burner casting. Remove the screws securing the mounting bracket to the burner. See Fig. 21.

FIG. 21

FRONT VIEW

5/32 IN IGNITOR BOTTOM

TO BURNER TOP

SCREWS

MOUNTING

BRACKET

IGNITOR/SENSOR

■

The igniter and ground rod should be cleaned during routine maintenance to maintain proper ignition.

-- Use steel wool or emery cloth.

-- Rub briskly to remove buildup of dust, dirt , and oxide.

■

Check the igniter’s ceramic base for cracks.

-- Replace the igniter if cracks are found.

IGNITOR CABLE

TOP VIEW

ELECTRODE GAP IS 1/8 IN

AND CENTERED OVER BURNER PORT

BURNER

PORT

18

WARNING

TESTING THE MANUAL RESET HIGH LIMIT SWITCHES

4. Allow the switch to cool for about a minute before firmly pressing its reset button. The switch may have a red cap over the button. If you removed the cap to reset the switch, ensure you put it back on.

■

Do not operate the heater with the high limit switch bypassed.

■

Operating the heater bypassed high limit switch may lead to overheating, possibly resulting in a fire, with subsequent damage to the heater or property damage.

5. Check for electrical continuity across the switch terminals to make sure the contacts have closed.

This heater has two limit switches. One is located at the burner end of the heater. The other is located on the fan housing at the motor end of the heater. Both high limit switches should be tested a minimum of once per year when the heater is given a thorough cleaning.

FIG. 23

RESET BUTTON

1. Remove the high limit switches.

2. Holding the switch by one of its mounting legs, apply a small flame only to the sensing portion on the back of the switch. Be ccareful nnot tto m when cconducting tthis ttest.

3. Within a minute, you should hear a pop coming from the switch, which indicates the contacts of the switch have opened.

TERMINAL

MOUNTING

LEG

SENSING

SURFACE

FLAME

BURNER ORIFICE AND GAS CONTROL VALVE

1. Remove hose and pipe nipple from control valve inlet.

5. Remove burner retaining bolt from under base at gas control end of heater. See Fig. 26.

2. Open burner end door.

FIG. 26

3. Remove screws from gas control bracket and disconnect control valve’s electrical wiring. See Fig.

24.

FIG. 24

BOLT

SCREW

4. Remove burner panel. See Fig. 25.

FIG. 25

6. Lift and pivot the gas train assembly so orifice is exposed. See Fig. 27. Remove control valve or orifice as needed.

FIG. 27

ORIFICE

19

FAN WHEEL, BEARINGS, AND SHAFT

1. Remove the two lower case screws from both case sides. See Fig. 26.

2. Spread the sides slightly so drive assembly with fan can be slid from heater.

3. Refer to the Figs. 27 & 28 for servicing of fan wheel, bearings, or shaft.

FIG. 28

FIG. 29

BOLT, 3/8-16 X 1 1/4

SCREWS 3/8

WASHER, 3/8"

SHAFT

FAN WHEEL

FAN PULLEY

BOLT,

5/16-18 X 1

FAN PANEL

BEARINGS

NUT, HEX LOCK, 3/8"

WASHER, 5/16

NUT, 5/16

FIG. 30

SHAFT PULLEY FLUSH

WITH SHAFT END

BOLT, 3/8-16 X 1

WASHER, 3/8"

MAIN SUPPORT

TENSIONER PARALLEL TO

DIAGONAL SUPPORT

FAN PANEL FLANGES

TOWARD PULLEY

FAN WHEEL

PULLEY HUB

FAN HUB

FLUSH WITH

SHAFT END

BEARING RACE FLUSH

WITH FRONT EDGE

OF SHAFT FLAT.

SET SCREWS TIGHTENED

TO FLATS.

MAIN SUPPORT

SHAFT FLAT

20

REMOVE

Gas Pressure Checks

WARNING

■

Do not disassemble the gas control valve.

■

Do not attempt to replace any components of the gas control valve.

■

The gas control valve must be replaced if any physical damage occurs to the control valve assembly.

■

Failure to follow this warning will result in fire or explosions, leading to injury or death to humans, and property damage.

1. With the heater operating, the pressure gauges should read the pressures specified on the dataplate.

2. Do the readings at the inlet and outlet pressure gauges 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.

ATTENTION

■

The following explains a typical procedure to be followed

■ in checking gas pressures.

The gas pressures will vary depending upon fuel type.

4. If the inlet pressure is correct but the burner manifold pressure does not agree with that specified on the dataplate, then the gas control valve’s internal pressure regulator needs adjsutment:

-- Remove the regulator cap on the control valve.

-- Using a standard screwdriver turn the adjusting screw clockwise (to increase pressure) or counterclockwise (to decrease pressure) until the burner manifold pressure is set.

-- Install regulator cap.

■

Consult the dataplate on the heater or page 4 in this manual for specific pressures to be used in conjunction with this procedure.

■

Gas pressure measured at the inlet to the gas valve is

Inlet Pressure and gas pressure measured at the outlet of the gas valve is Burner Manifold Pressure.

1. Once the proper inlet and burner manifold pressures have been confirmed and/or properly set, close the fuel supply valve to the heater and allow the heater to burn off any gas remaining in the gas supply line.

MATERIALS REQUIRED

Quantity

2

Description

Gas pressure gauges capable of reading up to 35 in. W.C. (may also be ordered from L.B. White, part number 00764)

2. Disconnect the heater from its electrical supply and close fuel supply valve.

3. Remove the gauges.

A. PPreparation

4. Install pressure tap plugs.

1. Disconnect the heater from the electrical supply and close the fuel supply valve to the heater.

5. Open fuel supply valve and reconnect electrical supply to heater. Start the heater and check for gas leaks.

2. Open the case access panel at burner end of heater.

6. Set thermostat to desired temperature.

3. Brush or blow off any dust or dirt in the vicinity of the gas control valve.

FIG. 31

OUTLET PRESSURE TAP

INLET PRESSURE T

TAP

1. Locate the gas control pressure taps, see Fig. 31.

Remove the pressure tap plugs using a 3/16 in. allen key.

2. Securely connect pressure gauges at these points.

3. Open the fuel supply valves to the heater and reconnect the heater electrical supply.

4. Start the heater

GAUGE AT VALVE INLET

INTERNAL PRESSURE REGULATOR

21

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 line voltage present and gas on. Use extreme caution 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 N

UNLESS YYOU H

NOT AATTEMPT TTO S

The following pieces of test equipment will be required to troubleshoot this system with minimal time and effort.

Multimeter - for measuring AC voltage and resistance.

Gauge - for checking inlet and outlet pressures at the gas control valve against dataplate rating.

■

Visually inspect equipment for apparent damage.

■

Check all wiring for loose connections and worn insulation.

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 of the ignition module and related components is esential as it will relate directly to problem solving provided by the flow charts.

The ignition control module is self-diagnostic. The red light, located within the selector switch, will flash a specific light pattern depending upon the problem which is diagnosed.

To effectively use the flow charts, you must first identify what the problem is by the light pattern of the L.E.D. (light emitting diode) diagnostic light. 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. Refer to the tables below to identify what page to refer to when troubleshooting any problems.

The L.E.D. light will only be on when the selector switch is positioned to HEAT and the thermostat is set above room temperature. The light will not be on when the selector switch is positioned to VENT.

Mode PProblems Page

L.E.D. is steady on. No flash pattern. . . . . . . . . . . . . . . . . . . 23

L.E.D. light is not on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

22

Page

L.E.D. diagnostic light is flashing:

A. One Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

B. Two Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

C. Three Times . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

D. Four Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

E. Five Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Mode PProblems Page

A. Motor Does Not Run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

B. Motor “Hums,” Does Not Run . . . . . . . . . . . . . . . . . . . . . . 27

C. Motor Runs, but with Low Air Output . . . . . . . . . . . . . . . . . 27

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:

-- Selector switch is set to heat.

-- Line voltage is sent to ignition control and to transformer.

-- Red light. on selector switch is illuminated.

-- Transformer reduces line voltage to 24 volts which is sent to thermostat.

-- The thermostat calls for heat.

-- The thermostat sends 24 volts to ignition control.

-- 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 24 volts to air proving switch.

-- Ignition control sends line voltage to motor relay

-- Motor relay closes and fan motor starts.

-- Air proving switch closes and 24 volts are returned to the ignition control module.

-- Ignition control module sends high voltage to the igniter electrode.

-- Igniter sparks.

-- Ignition control module sends 24 volts to the gas control valve through the high 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.

-- Gas control closes, burner shuts down.

moottoorr ccoonnttiinnuueess ttoo rruunn ffoorr 1 hheeaatt cchhaam mbbeerr..

-- Fan motor stops.

-- Heater shuts off.

-- Process starts again on a call for heat.

IIG NIITTIIO N FFAAIILLU REE S UEEN CEE::

-- 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.

olts Supplied to

Ignition Module?

If Electrical Connections are Good, R

L.E.D. Light is Disconnect

Voltage Supplied to

Voltage Supplied to

Check Electrical Connections and P

23

24

(Check Continuity on Air or Loose Connection to

Fan Loose On Mo

Module Sending Pr

Ignition Module Receiving Pr

Voltage Supplied to

Prescribed Methods in this Owner’s Manual.

Does Fan Belt Slip?

Check Bearing(s). R

25

26

Positioned Pr eposition Ignit and Tight Connections. R

Connect High V

Check all Electrical Connections. V

the VENT Position.

27

Electrical Connection and Ladder Diagram

L1

DIRECT SENSE

IGNITER

LED

IND

L1

X

R

FS

W

PS1

PS2

MV

AIR PROVING SWITCH

GREEN

CAUTION - REFER TO THE EQUIPMENT'S ELECTRICAL CONNECTION DIAGRAM WHEN SERVICING

TO AVOID WIRING ERRORS & HEATER MALFUNCTION. CHECK FOR PROPER OPERATION AFTER SERVICING.

WARNING: THIS HEATER MAY START AT ANY TIME

YELLOW

YELLOW

BROWN BROWN BROWN

GREEN

BROWN

C

MV

GAS CONTROL

VALVE

GROUND

GREEN

GREEN

JUMPER

GREEN

GREEN

BURNER GROUND

HIGH LIMIT SWITCHES

GREEN

GREEN

C/COM

GREEN

GREEN

YELLOW

YELLOW

YELLOW

YELLOW

YELLOW

BROWN

RED

BLACK

BLACK

BLACK

MOTOR

WHITE

BLACK

GREEN

GREEN

YELLOW TRANSFORMER

WHITE

BLACK

0

FAN MOTOR

RELAY

2 4

6

1

8

YELLOW

YELLOW

WHITE

BLACK

BLACK

WHITE

JUMPER

WHITE

WHITE

BLACK

BLACK

BLACK

BLACK

BLACK

WHITE

WHITE

WHITE

WHITE

BLACK

BLACK

TERMINAL

STRIP

BLACK

BLACK

THERMOSTAT

WHITE

BLACK

GREEN

WHITE

BLACK

WHITE

BLACK

POWERCORD

BLACK

BLACK

BLACK

BLACK

HEAT

OFF

VENT

RED

WHITE

WHITE

WHITE

SELECTOR SWITCH W/ L.E.D.

ELECTRICAL CONNECTION DIAGRAM

DIRECT SENSE

IGNITER

NEUTRAL

GROUND

HEAT

OFF

VENT

SELECTOR SWITCH

W/ L.E.D.

GROUND

MOTOR

FAN MOTOR RELAY

GAS VALVE

SOLENOIDS

HIGH LIMIT

SWITCH

HIGH LIMIT

SWITCH

AIR PROVING SWITCH

THERMOSTAT

LED

115V 24V

TRANSFORMER

ELECTRICAL LADDER DIAGRAM

IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE

REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 302ºF (150ºC)

L1

IND

LED

MV

PS2

PS1

W

R

FS

X

C/COM

BURNER GROUND

28

Air Proving Switch

Safety device used to insure that the proper air flow is being achieved before the gas valve is opened.

Belt

Friction drive component used for transmission of power from motor to fan shaft. Used in conjunction with motor and fan sheaves.

Burner

Cast iron 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.

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 Housing

Chamber used for delivering air for efficient air movement.

Fan Wheel

Component used in conjunction with the motor and fan housing to pull the hot air from heater and blow it into room for heating (also known as a squirrel cage).

Gas Control Valve

Electrical device consisting of a low pressure regulator and electrical solenoids used for the control of gas flow to the burner assembly. A feature of the control valve is a built-in gas shut off which may be used to isolate the heater from its gas supply when servicing.

Gas Hose

Flexible connector used to convey gas from supply line in building to heater.

Gas Selector Valve

Allows easy gas conversion depending on gas being supplied at job site. Eliminates the need for changeout of the burner orifice .

Heater Component Function

Heat Chamber

Metal “fire box” within the appliance that provides an area where burner flame mixes with combustion air, thereby providing heat.

High 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.

Igniter

Ignition device used on automatic direct spark ignition control systems. Ignites gas by spark.

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.

Motor Relay

Electrical component wired between ignition control and motor. Used to feed voltage to motor upon receipt of voltage from ignition control.

Regulator

Mechanical device used in L.P. and natural 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.

Selector Switch

Electrical device which is used to allow the end user to use the heater in either a heating or ventilation application.

Sheaves

Grooved friction drive components responsible for transmission of power from motor to fan shaft. Used in conjunction with V-Belt.

Thermostat

Electrical device used as an automatic “on/off” switch which will respond to changes in temperature in a certain area. Can be wired so contacts in the thermostat open or close on temperature increase or decrease.

Transformer

Electrical control used to accept line power supply primary voltage and reduce it to lower secondary voltage.

29

Parts Identification

PARTS SCHEMATIC

24

22

34

35

23

67

33

32

62

C

62

A

30

27

62

26

25

28

29

31

49

64

62

B

37

36

38

63

53

48

44

41

40

43

A

1

A

1

21

19

20

2

1

B

15

B

15

16

47

11

17

9

52

15

A

66

47

70

65

14

B

14

A

18

50

51

43

47

54

46

14

78

77

12

10

6

6

A

8

68

3

68

A

45

39

55

75

61

66

76

56 57

42

46

59

60

58

5

5

A

5

B

30

21

22

23

24

17

18

19

20

12

14

14A

14B

15

15A

15B

16

10

11

8

9

5A

5b

6

6A

Item

1

1A

1B

2

3

5

29

30

31

32

25

26

27

28

33

34

35

36

37

42

43

44

45

38

39

40

41

46

47

Description

Regulator

Pigtail Connector Propane Gas

Bushing Propane Gas

Hose, 3/4 ID x 15 Ft.

Union

Nipple, 1/2 x 4 In.

Bushing

Street Ell

Bracket, Gas Control

Screws

Valve, Gas Control

Elbow, 1/2 NPT

Nipple

Gas Selector Valve

Manifold with Burner Orifice

Burner

Bolt, Burner

Washer

Igniter

Bracket

Screws

Lead, Ignition

Screw, Burner Mounting

Spacer, Burner

Panel, Burner Access

Chamber, Heat

Switch, High Limit, Burner End, 325ºF

Case Assembly w/ Control Panel & Access Door

Panel, Case Access, Burner

Panel, Case Access, Motor

Panel, Control Box Cover

Latch

Transformer

Relay

Control Ignition

Switch, Selector w/ L.E.D.

Terminal Strip

Hose Hanger

Cage Nut

Washer, 1/4

Bolt, 1/4 - 20 x 3/4

Bracket, Regulator Storage

Screws. Regulator Storage Bracket and Thermostat Storage Bracket

Guard, Belt

Belt

Belt Tensioner

Pulley, Fan

Drive Platform

Bolt, 3/8 - 16 x 1

Bearing, Pillow Block

Bolt, 3/8 - 16 x 1 1/4

Nut, 3/8 - 16

Washer, 3/8

PARTS LIST

02688

02687

24012

22890

81108

22877

22881

22880

25828

23176

02692

01589

06479

22895

07288

24810

Part Number

25141

25774

25775

23078

25272

03128

08955

25273

21768

09425

24025

01359

02706

25826

22875

09199

09615

08685

25590

22017

22905

08936

07708

03054

11254

22917

07288

24021

24031

25135

23037

25277

23128

25132

03147

05100

01589

31

PARTS LIST (cont.)

58

59

60

61

54

55

56

57

Item Description

48 Shaft, 3/4 Dia. with 3/16 keyway

49

50

Panel, Fan Access

Fan

50A Key, 3/16 in., Fan & Motor Sheaves, & Fan Shaft (Not Illustrated)

51 Switch, Air Proving

52

53

Housing, Fan

Switch, High Limit, Fan End, 190ºF

Motor

Pulley, Motor

Axle, Wheel

Spacer

Hub Cap

Wheel

Cap, Retaining

Base

62 Thermostat Kit w/ 20 Ft. Cord

62A Thermostat

62B Cord, Thermostat

62C Connector, Liquid Tight

63

64

65

66

67

68

Cord, Power, 10 Ft.

Bracket, Thermostat Storage

Wheel, Caster

Bolt, 5/16 - 18

Handle, Case

Bracket, Axle Mount

68A Bracket, Axle

76

77

79

Nut, 5/16 - 18

Motor Mount

Wire Harness, LED

Part Number

25133-A

22887

22868

22955

09925

22882

25822

22908

23038

22951

07905

07187

22914

01095

24013

24041

09381

20164

08948

22907

23186

23130

03141

08534

25274

23113

01680

25276

24685

32

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

12 m the ddate oof ppurchase bby tthe eend uuser, 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.

Warranty Policy

EQUIPMENT

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.

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 m months ffrom tthe ddate oof ppurchase bby the eend uuser. 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

PARTS

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.

Contact your local L.B. White dealer for replacement parts and service or call the L.B. White Co., Inc. at 1-800-345-

7200 for assistance. Be sure that you have your heater model number and configuration number when calling.

Replacement Parts and Service

33