owner’s manual and instructions - l.b. white combustion can lead to asphyxiation or carbon...
TRANSCRIPT
MODELS OUTPUT (Btuh) FUEL
AT 150 150,000AT 125 125,000AT 100 100,000
Congratulations!
You have purchased the finest radiant tube heater available for the heating ofpoultry confinement buildings.
Your new L.B. White radiant heater incorporates the benefits from the mostexperienced manufacturer of heating products using state-of-the-art technology.
We, at L.B. White, thank you for your confidence in our products and welcomeany suggestions or comments you may have...call us toll free at (800) 345-7200.
ATTENTION ALL USERS
This heater has been tested and evaluated by C.S.A. International in ccordance
with the requirements of standard ANSI Z83.20-2008 . CSA 2.34-2008 and is
listed and approved as a direct gas-fired radiant tube heater with intended use for
the heating of poultry confinement buildings.
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.
150-27265
Propane VaporWithdrawal
orNatural Gas
Owner’s Manual and InstructionsSENTINEL® Agricultural Building Radiant Tube Heaters
SCAN THIS QR CODEwith your smartphone or visit http://goo.gl/yyKxJoto view maintenancevideos for L.B.Whiteheaters.**Requires an app like QR Droid for Android or QR Reader for iPhone.
WARNING
■ Proper gas supply pressure must be provided to the inlet of the heater.■ Refer to rating 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, building damage or loss of livestock.■ 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 to humans and livestock.
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 heater.
■ 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, contactL.B. White at 800-345-7200.
FOR YOUR SAFETYIf 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 SAFETYDo not store or use gasoline or otherflammable vapors and liquids in the vicinity ofthis or any other heater.
WARNING
Fire and Explosion Hazard■ Keep solid combustibles a safe distance
away from the heater.
■ Solid combustibles include wood or paperproducts, feathers, straw, and dust.
■ Do not use the heater in spaces whichcontain or may contain volatile or airbornecombustibles.
■ Volatile or airborne combustibles includegasoline, solvents, paint thinner, dustparticles or unknown chemicals.
■ Failure to follow these instructions mayresult in a fire or explosion.
■ Fire or explosions can lead to propertydamage, personal injury or loss of life.
2
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 orexplosion.
■ Fire or explosions can cause propertydamage or loss of life.
WARNINGImproper installation, adjustment, alteration,service or maintenance can cause property
damage, injury or death. Read the installation,operating and maintenance instructionsthoroughly before installing or servicing
this equipment.
This owner's manual includes all options and accessoriescommonly used on or with this heater. However, dependingon the configuration purchased, some options andaccessories may not be included.
When calling for technical service assistance, or for otherspecific information, always have the model number andserial number available.
This manual will instruct you in the operation and care ofyour radiant heater. Have your qualified installer review thismanual with you so that you fully understand the heater andhow it functions.
The gas supply line installation, and the repair, installationand servicing of the heater requires continuing experttraining and knowledge of gas heaters and should not beattempted by anyone who is not so qualified. See page 6 fordefinition of the necessary qualifications.
Contact your local L. B. White distributor or the L.B. WhiteCo., Inc. for assistance, or if you have any questions aboutthe use of the heater or its application.
The L.B. White Co., Inc. has a policy of continuous productimprovement. It reserves the right to change specificationsand design without notice.
SECTION PAGEGeneral Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Installation Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Inlet Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Drawing Inlet Air From Attic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Drawing Inlet Air Through Side Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Initial Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Hanging the Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Installing Reflectors & Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Air Turbulation Strips & Vent Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Sediment Trap Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Manual Shut Off Valve, Hose & Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Heater Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Service Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Igniter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Gas Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Burner Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Motor and Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Air Differential Pressure Switch, Tubing & Pressure Orifice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Electrical Connection and Ladder Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 & 28Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29Parts Identification
Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Table of Contents
General Information
3
Tube Heater Specifications
4
AT100 AT125 AT150
30 40 40 50 40 50
120 150 150 180 150 180
140 170 170 200 200 230
100,000 125,000 150,000
65,000 75,000 90,000
4.63 5.79 7.09
100 125 150
13.5 in. W.C., L.P. and Natural Gas
11.0 in. W.C., L.P. Gas7.0 in. W.C., Natural Gas
10.0 in. W.C., L.P. Gas4.0 in. W.C., Natural Gas
4.5 in. W.C., L.P. Gas2.0 in. W.C., Natural Gas
140 CFM
Ball Bearing
1/30 H.P., 3020 RPM, CW Rotation
115/60/1
STARTING 1.16
CONTINUOUSOPERATION
TOP 1 ft.
FRONT SIDE 10 ft
BACK SIDE 1 ft.
DISCHARGE END 6 ft.
BELOW RADIANT TUBES 6 ft.
12-18 in. Above Litter and Approx. 15 Ft. Down from Burner Box
Ventilation Air Required to Support Combustion
Minimum Safe Distances of Heater From NearestCombustible Materials(See Fig. 1 on page 5)
Amp Draw(Starting Amps Include Igniter)
Motor Characteristics
1.02
Temperature Sensor Location(See Fig. 2 on page 5)
SPECIFICATIONS
Models
Inlet Gas SupplyPressure Acceptable at the Inlet of the Heater for Purpose ofInput Adjustment
Maximum Input per Hour (BTUH)
Minimum Input per Hour (BTUH)(Two Stage Gas Control)
Available Tube Lengths (ft.)
MAIN IN SINGLE STAGE CONTROL
SECOND STAGE IN TWO STAGE CONTROL
FIRST STAGE IN TWOSTAGE CONTROL
MAX.
MIN.
BurnerManifoldPressure
Fuel Consumptionper Hour (Max.)
Electrical Supply (Volts/Hz/Phase)
Net Weight (lbs.)
Shipping Weight (lbs.)
L.P. GAS (lbs.)
NAT. GAS (cu. ft.)
4.0 in. W.C., L.P. Gas1.8 in. W.C., Natural Gas
SAFE CLEARANCES FROM COMBUSTIBLESFIG. 1
1 FT
5
FIG. 2TEMPERATURE SENSOR LOCATION
WATER LINE
INSIDE WATER LINE
6 FT
6 FT
1 FT
6 FT6 FT
6 FT
FEED LINE
HEATER
LITTER
SENSOR LOCATED DIRECTLY ABOVEWATER LINE AND 12 IN. - 18 IN.ABOVE THE LITTER.
12 IN. TO 18 IN.
LOCATE THE SENSOR APPROXIMATELY 15 FT. DOWNFROM BURNER BOX.
SENSOR
INSIDE WATER LINE
Propane gas and natural gas has man-made odorant 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. Donot operate any electrical switches. Do not pull anypower supply or extension cords. Do not light matchesor any other source of f lame. Do not use yourtelephone.
■ Get everyone out of the building and away from the areaimmediately.
■ Close all propane (LP) gas tank or cylinder fuel supplyvalves.
■ Propane gas is heavier than air and may settle in lowareas. When you have reason to suspect a propaneleak, keep out of all low areas.
■ Use your neighbor’s phone and call your fuel gas supplier and your fire department. Do not re-enter thebuilding or area.
■ Stay out of the building and away from the area untildeclared safe by the firefighters and your fuel gas
supplier.
■ Close all propane (LP) gas tank or cylinder fuel supplyvalves or the main fuel supply valve.
■ FINALLY, let the fuel gas service person and thefirefighters check for escaped gas. Have them air outthe building and area before you return. Properlytrained service people must repair the leak, check forfurther leakages, and then relight the heater for you.
■ Some people cannot smell well. Some people cannotsmell the odor of the man-made chemical added topropane gas. You must determine if you can smellthe odorant in this fuel gas.
■ Learn to recognize the odor of propane gas or naturalgas. Local propane gas dealers will be more thanhappy to give you a “scratch and sniff” pamphlet. Use itto become familiar with the fuel gas odor.
■ Smoking can decrease your ability to smell. Beingaround an odor for a period of time can affect yoursensitivity to that particular odor. Odors present inanimal confinement buildings can mask fuel gas odor.
■ The odorant in propane gas is colorless and theintensity of its odor can fade under somecircumstances.
■ If there is an underground leak, the movement of gasthrough the soil can filter the odorant.
■ Propane gas odor may differ in intensity at differentlevels. Since propane gas is heavier than air, there maybe more odor at lower levels.
■ Always be sensitive to the slightest gas odor. If youcontinue to detect any gas odor, no matter how small,treat it as a serious leak. Immediately go into action asdiscussed previously.
FUEL GAS ODOR
ODOR FADING -- NO ODOR DETECTED
ATTENTION -- CRITICAL POINTS TO REMEMBER!
■ Propane gas has a distinctive odor. Learn to recognizethis odors. (Reference “Fuel Gas Odor” and “OdorFading” sections above.
■ If you have not been properly trained in repair and serviceof propane gas fueled heaters, then do not attempt tolight the heater, perform service or repairs, or make anyadjustments to the heater on a propane gas or fuelsystem.
■ Even if you are not properly trained in the service andrepair of radiant heaters, ALWAYS be consciously awareof the odors of propane gas and natural gas.
■ A periodic “sniff test” around the heater or at theheater’s joints; i.e. hose, connections, etc., is a goodsafety practice under any conditions. If you smell evena small amount of gas, CONTACT YOUR FUEL GASSUPPLIER IMMEDIATELY. DO NOT WAIT!
6
WARNING
■ Do not use this radiant heater for heating human livingquarters.
■ Do not use in unventilated areas.
■ The flow of combustion and ventilation air must not beobstructed.
■ Proper ventilation must be provided to support thecombustion air requirements of the heater being used.
■ Refer to the specification section of the Owner’sManual, heater’s dataplate, or contact the
L.B. White Company to determine combustion airventilation requirements of the heater.
■ Lack of proper ventilation air will lead to carbonmonoxide poisoning in humans leading to seriousinjury or death. Symptoms of carbon monoxidepoisoning can include headaches, dizziness anddifficulty in breathing.
■ Symptoms of improper ventilation affecting livestockcan be disease, lower feed conversion, or death.
Asphyxiation Hazard
Safety Precautions
1. Do not attempt to install, repair, or service this heateror the gas supply line unless you have continuingexpert training and knowledge of gas heaters.
Qualifications for service and installation of thisequipment are as follows:
a. To be a qualified gas heater service person, youmust have sufficient training and experience tohandle all aspects of gas-fired heater installation,service and repair. This includes the task ofinstallation, troubleshooting, replacement ofdefective parts and testing of the heater. Youmust be able to place the heater into a continuingsafe and normal operating condition. You mustcompletely familiarize yourself with each modelheater by reading and complying with the safetyinstructions, labels, Owner’s Manual, etc., that isprovided with each heater.
b. To be a qualified gas installation person, you musthave sufficient training and experience to handleall aspects of installing, repairing and altering gaslines, including selecting and installing the properequipment, and selecting proper pipe and tanksize to be used. This must be done in accordancewith all local, state and national codes as well asthe manufacturer’s requirements.
2. All installations and applications of L.B. White heatersmust meet all relevant local, state and nationalcodes. Included are L.P. gas, electrical, and safetycodes. Your local fuel gas supplier, a local licensedelectrician, the local fire department or similargovernment agencies, or your insurance agent canhelp you determine code requirements.
-- ANSI/NFPA 58, latest edition, Standard forStorage and Handling of Liquefied PetroleumGas and/or
-- ANSI Z223.1/NFPA 54, National Fuel GasCode
-- ANSI/NFPA 70, National Electrical Code.
3. Do not move, handle, or service heater while inoperation or connected to a power or fuel supply.
4. This heater may be installed in areas subject towashdown. This heater may only be washed on theexternal components. See Cleaning Instructions. Donot wash the interior of the burner box or the tubes.Use only compressed air, soft brush or dry cloth toclean the interior of the heater and it’s components.After external washdown, do not operate this heateruntil it is completely dry. In any event, do not operatethe heater for at least one hour after externalwashdown.
5. For safety, this heater is equipped with an differentialair pressure switch. Never operate this heater if thissafety device has been bypassed. Do not operate thisheater unless this feature is fully functioning.
6. The heater is designed to operate only with its accessdoor closed and latched. Do not operate the heaterwith its burner box access door open.
7. Do not block air intakes or discharge outlets of theheater. Doing so may cause improper combustion ordamage to heater components leading to propertydamage or animal loss.
8. The hose assembly shall be visually inspected on anannual basis. If it is evident there is excessiveabrasion or wear, or if the hose is cut, it must bereplaced prior to the heater being put into operation.The hose assembly shall be protected from animals,and contact with hot surfaces during use. The hoseassembly shall be that specified by the manufacturer.See parts list.
9. Check for gas leaks and proper function upon heaterinstallation and before building repopulation.
10. This heater should be inspected for proper operationby a qualified service person at least annually.
11. Always turn off the gas supply to the heater when notin use.
12. This heater is equipped with a three-prong(grounding) plug for your protection against shockhazard and must be plugged directly into a properlygrounded three-prong receptacle. Failure to use aproperly grounded receptacle can result in electricalshock, personal injury, or death.
13. Direct ignition heaters will make up to three trials forignition. If ignition is not achieved, the control systemwill lock out the gas control valve. If gas is smelledafter system lock out has occurred, immediately closeall fuel supply valves. Do not relight until you are surethat all gas that may have accumulated has clearedaway. In any event, do not relight for at least 5minutes.
14. Use only approved gas hose or approved flexibleconnectors which are rated for use with propane ornatural gas.
7
1. Read all safety precautions and follow L.B. Whiterecommendations when installing this heater. Ifduring the installation of the heater, you suspect thata part is damaged or defective, call a qualifiedservice agency for repair or replacement.
2 A qualified service agency must check the heaterupon installation and periodically. This shall consistof the following:
-- Start up and shut down of the heaters to test forproper operation.
-- Leak check all gas pipe joints and gas hoseconnections.
-- Gas pressure checks.-- Ensuring the heater is properly positioned away
from combustible materials.
3.Inlet Air Requirements:This heater requires clean, fresh air from anormal, atmospheric pressure environment forproper operation and combustion. ContactL.B.White Company if you have any questionsregarding the installation of this heater.
Inlet air may be drawn from the attic or throughside walls under a protective eve. See Figs. 3 and4.
-- All inlet air seams and joints must be sealed-- Do not use any filters on the air inlet system-- The air inlet system must be kept as straight
as possible. -- Contact L.B.White Co. if you have any
questions regarding the instal lation of the heater
Inlet air for combustion must not be drawn from:■ Inside the confinement room.■ An attic or location where negative pressure
(vacuum) affects the air draw of the heater’sfan. Examples include, but are not limited to:
a. houses with attic soffit vent area smallerthan ridge cap vent area
b. heater air inlet located within 20 ft. ofbuilding ventilation fans
c. locations where wind and/or theelements can create a negativepressure.
Drawing Inlet Air From Attic■ Use L.B.White air inlet kit 24950:
12 IN. MIN.FROMINSIDE OF ROOF
12 IN. MIN. ABOVEINSULATION
ROOF
MINMIZEHORIZONTALTRAVEL OFFLEX DUCT
CUT 4 1/4 IN. HOLE THROUGH CEILINGADJACENT TO JOIST. SPREAD INSULATIONAWAY AND FASTEN CEILING FLANGE TOJOIST.
CLAMPS
INLET CENTER30-40 IN. FROM
BURNER BOX
FLEX TUBE CUT TO LENGTH-- DO NOT EXCEED 4 FT. MAX. LENGTH-- DO NOT KINK
SMOOTH INLET TUBE, MAX. 2FT. LENGTH, 4 IN. DIA.(FIT OVER CEILING FLANGE)
ENSURE INLET CAP ISUNBLOCKED BY INSULATION
Installation Instructions
8
GENERAL
CUT TUBE 6 IN. SHORTER IF CEILING FLANGE IS CLOSER THAN 30 IN.FROM BURNER BOX.ADD ADDITIONAL LENGTH OF 4 IN. RIGID TUBE (NOT INCLUDED) IFCEILING FLANGE IS 40 IN. OR MORE FROM BURNER BOX.
24 IN. RIGID TUBE
WARNINGCombustion Hazard
■ Provide a properly located and sized fresh air inlet forthe heater.
-- Refer to Inlet Air Requirements instructions.■ Failure to provide a fresh air inlet can lead to:
-- Sooting causing building damage-- High carbon monoxide levels, causing serious
injury or death to livestock and humans-- Overheating of the first 10 ft. tube, causing fires
leading to building damage and injury to livestockand humans.
-- Higher temperature differences over the length ofthe tubes, causing problems in temperaturecontrol and bird performance
FIG. 3
Drawing Inlet Air Through Side Walls
USE MINIMUM LENGTH OF 4 IN DIAMETER FLEXDUCT WHEN CONNECTING 4 IN. PVC TO BURNERBOX. AN ADAPTER CONNECTION FOR THE BURNERBOX TO THE 6 IN. PVC MUST BE OBTAINEDTHROUGH LOCAL SOURCE.
INSTALL SUPPORTS TO PREVENT INLET SAGGIN
AIR INLET USE INLET CAP, 24861 FOR 4 IN PVC CAN ALSO USE 1/4 X 1/4HARDWARE CLOTH FOR EITHER 4 IN.OR 6 IN. PVC. SECURE INLET TO WALL.
FIG. 4
4” RIGID PIPE
ROOF
WAL
L
12” MIN.
4” RIGIDPIPE
4. The heater is approved for indoor use only
5. Heater installation must take into considerationproper hanging height to allow for clearance ofcatching machines, litter spreaders, and any otherequipment used.
6. Ensure the heater installation does not interfere withwater, gas, or electrical lines.
7. Position the gas hose to prevent any contact with thetubes, heat relectors, and burner box.
8. Ensure that all accessories that ship with the heaterhave been removed from shipping containers andinstalled. This pertains to gas hose, regulators,supports, hangers, etc.
9. This heater requires a regulated gas supply to its gasinlet :
-- The regulator must be the proper design for the application.
-- The regulator must control the inlet pressure tothe heater within the range specified on thedataplate.
-- Regulators mounted outside must be protectedfrom adverse weather conditions.
-- Regulators with pressure relief valves should beinstalled outside the building.
-- Regulator installed inside should be ventedoutside.
-- Local state and national codes apply to regulatorinstallation. Refer to NFPA 54, National Fuel GasCode, and NFPA 58, Standard for Storage andHandling of Liquified Petroleum Gas.
10. Always use pipe joint compound that is resistant toliquefied petroleum gas and natural gas.
11. Check all connections for gas leaks using approvedgas leak detectors. Gas leak testing is performed asfollows:
-- Check all pipe connections, hose connections,fittings and adapters upstream of the gascontrol with approved gas leak detectors.
-- In the event a gas leak is detected, check thecomponents involved for cleanliness and properapplication of pipe compound before furthertightening.
-- Tighten the gas connections as necessary tostop the leak.
-- After all connections are checked and any leaksare stopped, turn on the main burner.
-- Stand clear while the main burner ignites toprevent injury caused from hidden leaks thatcould cause flashback.
-- With the main burner in operation, check allconnections, hose connections, fittings andjoints as well as the gas control valve inlet and
outlet connections with approved gas leakdetectors.
-- If a leak is detected, check the componentsinvolved for cleanliness in the thread areas andproper application of pipe compound beforefurther tightening.
-- Tighten the gas connection as necessary to stopthe leak.
-- If necessary, replace the parts or componentsinvolved if the leak cannot be stopped.
-- Ensure all gas leaks have been identified andrepaired before proceeding.
12. Install a sediment trap at the gas valve inlet toprevent foreign materials (pipe compound, pipechips and scale) from entering the gas valve. Debrisblown into the gas valve may cause that valve tomalfunction resulting in a serious gas leak thatcould result in a possible fire or explosion causingloss of products, building or even life. A properlyinstalled sediment trap will keep foreign materialsfrom entering the gas valve and protect the safefunctioning of that important safety component.
13. Any heater connected to a piping system must havean accessible, approved manual shut off valveinstalled within six feet (6 ft.) of the heater it serves.
14. Install the proper gas supply line to assure properfunctioning of the heaters. Consult your fuel gassupplier, or the L.B. White Co., Inc. for proper linesizing and installation.
15. Light according to instructions on heater or withinOwner’s Manual.
16. The heater is designed for L.P. vapor withdrawalonly. Do not use this heater in a propane liquidwithdrawal system. Do not permit propane in liquidform to enter the heater at any time.
17. The corrosive atmosphere present in animalconfinement buildings can cause component failureor heater malfunction. The heater should beperiodically inspected and cleaned in accordancewith the Maintenance and Cleaning Instructions inthis manual. Make sure that livestock is protectedby a back up alarm system that limits high and lowtemperatures and also activates appropriate alarms.
18. Take time to understand how to operate andmaintain the heater using the owner’s manual.Make sure you know how to shut off the gas supplyto the building and to the heater. Contact your gassupplier if you have any questions.
19. Any defects found in performing any of the serviceprocedures must be eliminated and defective partsreplaced immediately. Retest the heater beforeplacing it back into service.
20. Do not exceed input rating stamped on thedataplate of the heater. Do not exceed the burnermanifold pressure stated on the dataplate. Do notuse an orifice size different than specified for thespecif ic input rating of this heater, fuel typeconfiguration and altitude.
9
WARNINGFire 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,
injury or death.
JOIST
OPEN EYE HOOKS
IN LINE WITH
EYE BOLTS ON
BURNER BOX
OPEN EYE BOLT
AIR INLET1 FT
BURNER
DISCHARGE
TIGHTEN HOOKS
SECURELY
10
1. Plan the installation. Determine location for theheater to optimize its heat pattern, keeping in mindcooler regions in the house (end walls, and curtains)and clearances to combustibles.
2. Hang the burner box. See Fig. 5. Maintain clearancesto combustibles as shown in Fig. 1.
3. From the burner box chain, measure the distancesshown in Fig. 6. Aligning to the center of the burnerbox discharge, hang chains at these points, usingopen eye hooks.
FIG. 5
FIG. 6
INITIAL SETUP
A B C D E F G
HEATERLENGTH
TRUSS CENTERS
A - B B - C C - D D - E E - F F - G
4 FOOT
30 FOOT
40 FOOT
50 FOOT
4
4
4
4
4
4
12
12
12
8
8
8
12
12 8
5 FOOT
30 FOOT
40 FOOT
50 FOOT
5
5
5
5
5
5
10
10
10
10
10
10
5
10 5
10 FOOT
30 FOOT
40 FOOT
50 FOOT
5
5
5
5
5
5
10
10
10
10
10
10
5
10 5
*
*
*
*
*
* A SUPPORT MUST BE CREATED BETWEEN THE TRUSSES
BURNER BOX HANGING CHAINS
HANGING CHAIN DISTANCES
(FT) (FT) (FT) (FT) (FT) (FT)
HANGING THE TUBES
Refer to Fig. 7 and the following instructions:
1. Slide a tube clamp over the non-swaged end of the 10ft. bright aluminized tube or stainless steel tube.(Stainless steel tube used on AT150/40 ft. only). Onealuminized tube or stainless steel tube per tube kit.
2. Install the tube over the swaged discharge tube onthe burner box.
a. Tube weld seam must be down.b. Non-swaged end of tube must be completely
pushed over swaged end of adjoining tube.c. Clamp must be centered over tube connection.d. Clamp bolts must be up.e. Clamp bolts must be tight.
-- Tighten both bolts firmly.-- Tighten both bolts to 35 ft.-lbs.-- Finish tightening bolts to 65 ft.-lbs.
3. Slide on hangers and connect to chains.
4. Connect and hang remaining tubes. Follow theprocedures given in Step 2.
5. The tube assembly should be either hung level, orwith a downward slope away from the burner box notexceeding 1 in. for every 10 ft. of tube.
POSITION CLAMP EVENLY
CLAMPS MUST BECENTERED OVER
SWAGED AND NONSWAGED CONNECTIONS
FIG. 7
11
CLAMPBOLTS UP
TUBE WELDSEAM DOWN
THIS NOT THIS
TUBE WELD SEAM
BRIGHTALUMINIZED OR STAINLESSSTEEL TUBE
HANGER
NON-SWAGEDTUBE END
CLAMP
SWAGED TUBEON BOX
INSTALLING REFLECTORS & SUPPORTS
Refer to Fig. 8 for the following instructions:
1. Attach end cap to non-notched end of a reflector. Use4 U-clips.
2. Slide the reflector through the hangers until end capis up against burner box.
3. Slide remaining reflectors over tubes. Overlap thereflectors 2-3 inches. Non-notched ends overlapnotched ends.
4. Attach remaining end cap to last reflector with U-clips.
5. Install a support at end of reflector nearest burnerbox,and at middle and ends of all reflectors. Do notinstall a support directly next to a hanger on the samereflector.
FIG. 8
12
OUTLET END
INSERT STRIP ASSEMBLY
INTO LAST 10 FT OF TUBE
INSERT STRIPASSEMBLY INTO LAST10 FT. OF TUBE
OUTLET END
Assemble the strips and insert into last tube. Edge of stripis flush with end of tube. See Fig. 9. Refer to Fig.10 forinstallation of vent hood.
FIG. 9
FIG. 10
MANUAL SHUT-OFF VALVE, HOSE & REGULATOR ASSEMBLY
REGULATOR
NIPPLE
VALVE, MANUALSHUT-OFF
GAS HOSE
ADAPTER
SEDIMENT TRAPTO CONTROL
VALVE INLET
REGULATOR VENT
GAS
FLO
W
1. Assemble the components together. See Fig. 12.This view shows general assembly of thecomponents. The regulator must always be mountedso its vent, regardless of location on the regulator, isalways pointed downward. Ensure hose is positionedaway from the heater.
2. Tighten all connections securely and check for gasleaks.
FIG. 12
SECOND STAGEREGULATOR
13
Assemble the tee, nipple, and cap to the nipple at the gasinlet of heater. See Fig. 11. Tighten securely. The sedimenttrap assembly must always be mounted in a verticalposition. Check all connections for gas leaks usingapproved gas leak detectors.
FIG. 11
TUBE VENT HOOD
PUSH FIRMLY ONTO END TUBE
AIR TURBULATION STRIPS & VENT HOOD
SEDIMENT TRAP ASSEMBLY
PUSH VENT HOOD FIRMLY ONTO END OFLAST TUBE, OUTLET DOWN. FLAPPER OFVENT HOOD MUST CLOSE COMPLETELY.
PLEHOSE ADAPTER
TEE
NIPPLE
CAP
NIPPLEFROM HEATER
Refer to the heater’s burner box hinged access panel, orrefer to Start-up instructions in this manual to determine ifyour heater has a single or two stage gas control.
When connecting a thermostat or building controller to theburner box, route the wiring through the water tightconnector near the power cord af ter removing theconnector’s plug. See Fig.13 If the connector does notcompletley seal around the wiring after tightening, applysilicone at the wire entry of the connector.
All interconnecting thermostat wiring must be at least 18gauge to prevent voltage drop. Ensure the terminal markedW on the ignition control receives 24 VAC from thethermostat or building controller.
FIG. 13
A. Heaters with Single Stage Gas Control Valve
1. Connecting series tap thermostat kit.-- Connect power cord of heater to female side of
thermostat cord set.-- Plug the male side of cord set into an approved
extension cord or to wall outlet.
2. Wiring Single Stage Thermostat (See Fig.14)-- Remove wire nut at yellow and orange wire.-- Connect wiring of thermostat as shown or refer to
electrical diagram on heater
3 Building Controller Connections (See Fig.15) -- Remove wire nut from yellow and orange wires.-- Connect controller contacts as shown.
B. Heaters with Two Stage Gas Control ValvesHeaters with two stage gas controls are wired to start upand operate in the first stage position as shipped fromthe factory. Connection to a thermsostat or buildingcontroller is required for further operation.
1. Wiring Two Stage Thermostat (See Fig.16)-- Remove wire nut at orange and yellow wires.-- Connect wiring of two stage thermostat as shown.
2. Building Controller Connections (See Fig.17)-- Remove wire nut at orange, yellow , and red wires.-- Connect controller contacts as shown.-- Supply an electrical connection (jumper) between
relays in building control to allow staging transitionof gas control valve.
FIG. 17
HEATER CONTROLS
WARNINGElectrical Shock Hazard
■ Disconnect the heater’s electrical supply beforeinterconnecting the temperature control.
■ Failure to disconnect the electrical supply will result inelectrical shock.
■ Electrical shock will cause severe injury or death.
14
SINGLE STAGEHEAT CONTACTS
TIGHTEN CONNECTOR SECURELYAFTER INSTALLING THERMOSTATCORD)
FIG. 16
FIG. 14
FIG. 15
Follow steps 1 - 6 on initial start-up after heater installation.For normal start-up, simply turn thermostat above roomtemperature. The heater will start.
1. Open all manual fuel supply valves and check for gasleaks using approved leak detectors. The gas controlvalve has a manual shut-off feature incorporated intothe valve assembly. Ensure the indicator on the valveis turned to the ON position. See Fig. 18.
FIG. 18
2. Connect the electrical cord to an approved electricaloutlet.
3. Set the thermostat to desired room temperature.
4. This heater includes a direct ignition control modulefor purposes of controlling the timing of the ignitionprocess of the heater as well as monitoring of thesafety functions. A red LED (light emitting diode) ison the burner box cover . A constant on red indicatesthat the heater is functioning correctly. Any flashpattern identifies a problem in the operation of theheater. Refer to the troubleshooting decal on theinterior of the access panel for assistance introubleshooting.
5. The burner box has either one or two amber LEDs.One amber light indicates single stage heatingcapability. Two lights indicate two stage heating. SeeFig. 19.
FIG. 19
6. On a call for heat, the red status LED will come on.The motor will start up and run for five (5) seconds.This pre-purge is a safety feature and a normaloperational characteristic prior to ignition takingplace:
-- After five (5) seconds, the igniter will spark.-- First amber LED comes on, indicating first stage
heat, (for two stage heaters), or full heat output,(single stage heaters.)
-- Second amber LED (two stage heaters only) comeson, based on thermostat setting, indicating thevalve has opened to full heat output. See Fig. 3.
7. The ignition control will make up to three trials forignition. Each trial for ignition will take approximatelyten seconds. If the main burner does not light, thesystem will lock out, and a three flash pattern will begiven by the red LED.
NOTE: It is normal for air to be trapped in the gashose on new installations. The heater maytry more than once for ignition before the airis finally purged from the line and ignitiontakes place.
If the heater is to be shut down for cleaning, maintenance orrepair, follow steps 1 - 4. Otherwise, set the thermostat tooff or no heat for standard shut down.
1. Close all manual fuel supply valves.
2. With the heater lit, allow heater to burn off excess fuelin gas supply hose.
3. Turn thermostat to off or no heat position.
4. Disconnect the heater from the electrical supply.
Start-Up Instructions
Shut-Down Instructions
15
REDAMBER
BURNER VIEWINGWINDOW
1. Before cleaning, close fuel supply valve to heater anddisconnect electrical supply. Allow heater to cool.
2. The heater should have dir t or dust removedperiodically:
a. Af ter each f lock or between building re-population, give the heater a general cleaningusing pressurized air or a soft brush on its burnerbox, reflectors, and tubes.
b. At least once a year, give the heater a thoroughcleaning. At this time, open the burner box andbrush or blow off control components, and fanmotor assembly. Ensure the burner air inletventuri ports and the throat of the casting arefree of dust accumulation.
c. When washing with water, do not spray water intothe burner box or the tubes. Observe and obeythe Warning within these Cleaning Instructions.This same Warning is supplied on the heater.
Cleaning Instructions
WARNING
This heater may be washed only on its external areasprovided:
■ The burner box is disconnected from the electricalsupply.
■ The burner box access panel is closed and securelylatched.
■ Water spray nozzle shall not discharge within 6 feet ofthe burner box and its tubes.
■ The water pressure does not exceed 45 PSIG for 10seconds on each side of burner box.
■ The burner box is not reconnected to electrical supplyfor a minimum of 1 hour or until the it is thoroughly dry.
Improper cleaning can cause severe personal injury orproperty damage due to water and/or cleaning solution:
■ In electrical components, connections and wires withinthe burner box causing electrical shock or componentfailure.
■ On gas control components causing corrosion whichcan result in gas leaks and fire or explosion from theleak.
Clean internal components of the burner box with a soft,dry brush or cloth, or compressed air.
WARNINGFire, Burn, and Explosion Hazard
■ This heater contains electrical and mechanical components in the gas management, safety and airflow systems.
■ Such components may become inoperative or fail due to dust, dirt, wear, aging, or the corrosive atmosphere of ananimal confinement building.
■ Periodic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or propertydamage.
16
1. Have your gas supplier check all gas piping annuallyfor leaks or restrictions in gas lines. Also, at this timehave your gas supplier clean out the sediment trap onthe zone control panel of any debris that may haveaccumulated.
2. The heater’s surrounding area shall be kept clearand free from combustible materials, gasoline, andother flammable vapors and liquids.
3. Regulators can wear out and function improperly.Have your gas supplier check the date codes on allregulators installed and check delivery pressures tothe appliance to make sure that the regulator issuitable for continued use.
4. Regulators must be periodically inspected to makesure the regulator vents are not blocked. Debris,insects, insect nests, snow, or ice on a regulator canblock vents and cause excess pressure at theappliance.
5. For safety as well as for optimum performance at theheater, it is necessary to keep the outside of theheater free of dust, dirt or any combustible material.If any operational component shows signs of rust orcorrosion, replace the component immediately.
6. If any warning or instruction labels, dataplates, etc.become lost or hard to read, replace themimmediately. Do not operate the heater until youhave all instructions and can read and understandthem.
7. Check overall condition of heater for cracked ordamaged components, loose screws or bolts,nickedor cut electrical leads, etc. Replace any suspectcomponents.
8. Check all hose and tubing assemblies for cracks,abrasions or ruptures. Replace any hoses that aresuspect.
9. Ensure relfector supports and hangers are secure,reflectors do not sag, and are properly located.
10. Check all gasketing on burner box and fan housingdischarge. Ensure all is in good condition. Replaceany gasket material if suspect.
11. At least once a year, check the air inlet assembly.Ensure the air inlet assembly and its duct are free ofblockages.
Maintenance Instructions
Service Instructions
1. Close the fuel supply valve to the heater anddisconnect the heater’s electrical supply beforeservicing unless it is necessary to have the valveopen and electrical supply connected for your serviceprocedure.
2. Open the burner box for access to controlcomponents. Close and latch after servicing.
3. For reassembly, reverse the respective serviceprocedure. Ensure gas connections are tightenedsecurely.
4. Clean the heater’s burner orifice and pressure switchorifices with compressed air or a soft, dry rag. Do notuse files, drills, broaches, etc. to clean the orificehole. Doing so will enlarge the hole, causing ignitionor combustion problems. Replace the orifice if itcannot be cleaned properly.
5. Disconnect appropriate component electrical leadswhen servicing.
5. After servicing, light the heater to ensure properoperation and check for gas leaks.
WARNINGFire and Explosion Hazard
■ Do not disassemble or attempt to repair any heatercomponents or gas train components.
■ All component parts must be replaced if defects arefound.
■ Failure to follow this warning will result in fire orexplosions, causing property damage, injury, or death.
WARNINGBurn Hazard
■ Heater surfaces are hot for a period of time after theheater has been shut down.
■ Allow the heater to cool before performing service,maintenance, or cleaning.
■ Failure to follow this warning will result in burnscausing injury.
GENERAL
17
18
1. Brush or blow off any dust in area of the gas controlvalve.
2. Disconnect the gas hose and remove all piping fromfrom gas control inlet.
3. Remove the manifold from the control valve’s outlet.See Fig. 23.
4. Remove the screws holding the valve’s mountingbracket to the burner box top.
5. Pull the control from the box, and remove itsmounting bracket.
FIG. 23
19
The tip of the igniter is exposed to a harsh environmentconsisting of high temperatures and combustionproducts. Periodic servicing is required.
A. REPLACEMENT
1. Remove igniter mounting screws. See Fig. 20.
2. Remove ignition cable from igniter. See Fig. 21.
FIG. 20
FIG. 21
B. MAINTENANCE
1. Remove igniter from burner box. Ensure the gap is1/8 in. See Fig. 22.
2. Clean the electrode and ground rod using emerycloth.
FIG. 22
IGNITER
1/8 in.
GAS CONTROL VALVE
ELECTRODE GROUND RODSCREWS
MANIFOLD
MOUNTINGBRACKET
IGNITION CABLE
19
1. Remove the igniter
2. Remove the clear flexible tube from the pressureswitch. Fig.24.
. 3. Remove the four nuts from the burner mounting studsand remove burner . See Fig.24.
FIG. 24
4 Securely hold the burner manifold in place whileremoving the orifice from the manifold. See Fig. 25.Inspect the orifice and clean out any dirt. Replace it ifnecessary.
FIG. 25
5. When reinstalling the burner, ensure larger openingbetween burner vanes is directed to the access doorof the burner box. See Fig.26
FIG. 26
BURNER ORIFICE
MOTOR AND FAN ASSEMBLY
NUTS
TUBE
LARGER OPENING
1. Remove all fan housing mounting nuts. See Fig. 27.
2. Tilt the motor and fan assembly slightly and pullupward.
FIG. 27
3. Remove inlet side of housing. See Fig. 28. Loosenset screw on fan hub with a TORX 20 driver.
4. Pull fan wheel from housing. Remove nuts holdinghousing to motor mounting studs.
FIG. 28
ORIFICE
MANIFOLD
NUTS
20
For proper heater operation:
■ The copper pressure tube at the burner vane mustbe straight. See Fig.29.
■ Ensure the clear flexible tube is free of dust andsecurely connected to the fitting at the burner and tothe fitting at the differential pressure switch. SeeFigs. 30.
■ The air differential pressure orifices should be free ofblockages. If cleaning is required use pressurised air:
Orifices on pressure switch (See Fig.30.)-- Remove respective orifice from switch.-- Hold up to light, if blocked clean the orifice.-- Ensure orifices are securely pushed backed into
proper location on switch.
FIG. 29
Servicing the differential air pressure switch:
■ The differential pressure switch is non- adjustable. Ifthe switch does not make the circuit after inspection oftubes and orifices, it must be replaced.
■ Do not jumper the switch. Doing so will cause lock-outof the heater’s ignition control.
FIG. 30
AIR DIFFERENTIAL PRESSURE SWITCH, TUBING & PRESSURE ORIFICES
COPPER PRESSURE TUBE
TUBE
ORIFICESBLUEGREEN
21
■ The following is a typical procedure to be followed inchecking gas pressures for single or two stage gascontrol valves
■ Consult the dataplate on the heater or page 4 in thismanual for specific pressures. The gas pressures willvary depending upon fuel type.
■ Gas pressure measured at the inlet to the gas valve isInlet Pressure and gas pressure measured at the outletof the gas valve is Burner Manifold Pressure.
MATERIALS REQUIRED
Quantity Description2 Gas pressure gauges capable of reading up to
8.6 kPa. (may also be ordered from L.B. White, part number 00764)
1 12.5 mm. x 7.62 cm. nipple1 12.7 mm. tee1 Bushing, 12.7 mm. x 3.2 mm.
A. Preparation
1. Disconnect the heater from the electrical supply andclose the fuel supply valve to the heater inlet.
2. Remove the hose and hose adapter from thesediment trap.
3. Install the nipple,tee, bushing, and a pressure gaugeas shown in Fig. 31. Install hose and hose adapter.
FIG. 31
4. Open the burner box access panel.
5. Remove the plug from the connector near the powercord and route the gauge tubing through theconnector. See Fig. 32. Keep the connector’s plug.
FIG. 32
6. If connector is occupied by thermostat wiring, removethe air inlet tube from the burner box and route gaugetubing through burner box air inlet to gas controlvalve. See Fig. 33.
FIG. 33
7. Remove the pressure tap plug from the outlet of gascontrol valve. Securely connect a pressure gauge.See Fig. 34.
8. Close and latch the burner box. Open the fuel supplyvalves to the heater, reconnect the heater’s electricalsupply, and start the heater.
C. Reading Pressures
1. With the heater operating, the pressure gaugesshould read the pressures specified on the dataplate.
2. Do the readings at the inlet and outlet pressuregauges agree with that specified on the dataplate?If so, then no further checking or adjustment isrequired. Proceed to section D.
3. If the inlet pressures do not agree with that specifiedon the dataplate, then the regulator controlling gaspressure to the heater requires adjustment.
Gas Pressure Checks
NIPPLE
GAUGE
TEEBUSHING
CONNECTOR
PLUG
GAUGE TUBE
AIR INLET
22
4. If the inlet pressure is correct but the burner manifoldpressure does not agree with that specified on thedataplate, then the pressure regulator internal to thegas control requires adjustment. Refer to thefollowing instructions. The burner box will need to beopened and closed/latched as needed to accuratelyset the gas control pressures.
Two Stage Gas Controlsa. Set the thermostat to its lowest setting. Remove the
cap from the HI and LO heat adjusting screws at thetwo stage pressure regulator on the gas control valve.See Fig. 34.
FIG. 34
b. Slowly turn up the thermostat until the valve opens infirst stage position. The amber light next to the redlight on the burner box access panel will come on.Verify first stage outlet pressure according to theheater’s dataplate. If different than dataplate, the LOheat setting at the regulator on the gas controlrequires adjusting. Turn clockwise to increase, orcounterclockwise to decrease.
c. Turn the thermostat completely up. The secondamber light will come on. The valve has opened tosecond stage and the gas pressure will increase.Verify second stage gas pressure according todataplate. If different, the HI heat regulator must beadjusted. Turn clockwise or counterclockwise untilproper pressure is achieved.
Single Stage Gas ControlsSet the thermostat to its highest setting. The singleamber light on the burner box panel will come on, andgas control will open. If manifold gas pessure isdifferent than dataplate, adjust the internal pressureregulator clockwise or counterclockwise. See Fig. 35.
FIG. 35
D. Completion
1. Close the fuel supply valve to the heater and allowthe heater to burn off any remaining fuel.
2. Disconnect the heater from its electrical supply.
3. Remove the gauges and associated hardware. Installplugs in gas control valve and in connector. Tightenall securely. Close and latch panel. Reconnect airinlet to burner box if necessary.
4. Reconnect hose and adapter to sediment trap.tighten securely.
5 Open fuel supply valve and reconnect electricalsupply to heater. Start the heater and check for gasleaks. Set thermostat to desired temperature.
OUTLET PRESSURE TAP
INTERNAL PRESSURE REGULATOR
GAUGE AT VALVE OUTLET
GAUGE 00764
LO
HIGAS CONTROL
OFF
ON
OUTLETPRESSURE
TAP
READ THIS ENTIRE SECTION BEFORE BEGINNINGTO TROUBLESHOOT PROBLEMS.
The following troubleshooting guide provides procedures forisolating equipment problems. This guide is intended foruse by a QUALIFIED GAS HEATER SERVICE PERSON. DONOT ATTEMPT TO SERVICE THESE HEATERS UNLESS YOUHAVE BEEN PROPERLY TRAINED.
TEST EQUIPMENT REQUIRED
The following pieces of test equipment will be required totroubleshoot this system with minimal time and effort.
• Digital Multimeter - for measuring AC voltage andresistance.
• Low Pressure Gauge - for checking inlet and outletpressures at the gas control valve against dataplaterating.
■ Visually inspect equipment for apparent damage.
■ Check all wiring for loose connections and worninsulation.
Refer to the system operation sequence in this section togain an understanding as to how the equipment operatesduring a call for heat. Understanding the sequence ofoperation of the ignition module and related components isesential as it will relate directly to problem solving providedby the flow charts.
The ignition control module is self-diagnostic. The red LEDon the burner box will f lash a specif ic l ight patterndepending upon the problem which is diagnosed. Toeffectively use the flow charts, you must first identify whatthe problem is by the light pattern of the red diagnostic light.If the light is flashing, the flash pattern will be followed by apause and then a repeat of the flash pattern until theproblem is corrected. Refer to the tables below to identifywhat page to refer to when troubleshooting any problems.
Problems PageL.E.D. is steady on. No flash pattern.. . . . . . . . . . . . . . . . 24L.E.D. light is not on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24L.E.D. diagnostic light is flashing:
A. One Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25B. Two Times . . . . . . . . . . . . . . . . . . . . . . . . . . . 25C. Three Times . . . . . . . . . . . . . . . . . . . . . . . . . 26D. Four Times . . . . . . . . . . . . . . . . . . . . . . . . . . 26E. Five Times. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Components should be replaced only after each step hasbeen completed and replacement is suggested in the flowchart. Refer to the Servicing sections as necessary toobtain information on disassembly and replacementprocedures of the component once the problem is identifiedby the flow chart.
DIRECT IGNITION OPERATION SEQUENCE:-- Line voltage is sent to ignition control and to
transformer.-- 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.-- Red light is illuminated.-- Ignition control module performs self safety check.
-- Internal components are tested.-- Air pressure switch circuit is checked.
-- Ignition control module begins ignition trial sequence.-- Ignition control module sends 24 volts to air pressure
switch.-- Ignition control sends line voltage to motor.-- Fan motor starts.-- Air pressure switch contacts close 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.-- Gas control valve opens.
-- Ignition occurs.-- Igniter continues to spark until flame proving
occurs.-- Ignition spark is cut off.-- Gas valve stays open.-- Second stage (if applicable) of gas control opens
based upon thermostat.-- Room warms to desired temperature.
-- Thermostat is satisfied.-- Heater shuts down.
-- Process starts again on a call for heat.
Troubleshooting Information
WARNING■ This heater can start at any time.
■ Troubleshooting this system may require operating theunit with line voltage present and gas on. Use extremecaution when working on the heater.
■ Failure to follow this warning may result in propertydamage, personal injury or death.
23
Red
LED
Con
stan
t On
Nor
mal
Ope
ratio
n
Pro
blem
Red
LED
not o
ndu
ring
aca
ll fo
rhe
at.
Is h
eate
rpl
ugge
d in
?D
oes
heat
erst
art?
Yes
No
Yes
Yes
Yes
Is
ther
mos
tat
set a
bove
room
tem
pera
ture
?
Set t
herm
osta
tab
ove
room
tem
pera
ture
.
Is
ther
mos
tat
defe
ctiv
e? C
heck
for v
olta
ge s
uppl
yin
to a
nd o
ut o
fth
erm
osta
t.
Ispr
oper
volta
ge s
uppl
ied
to h
eate
r pow
er c
ord
and
thro
ugh
pow
er
cord
?
Chec
k da
tapl
ate
for
elec
tric
al s
uppl
yre
quire
men
ts.
Prov
ide
prop
er v
olta
ge fr
omel
ectr
ical
sup
ply.
Che
ckci
rcui
t bre
aker
s in
build
ing
elec
tric
alsy
stem
. Ch
eck
pow
erco
rd fo
r con
tinui
ty.
Rep
lace
ther
mos
tat
Are
24 v
olts
su
pplie
d fr
omtr
ansf
orm
er?
Rep
lace
tran
sfor
mer
No
No
No
No
Yes
Are
24 v
olts
su
pplie
d to
igni
tion
cont
rol t
erm
inal
Wdu
ring
igni
tion
sequ
ence
Poor
ele
ctric
al c
onne
ctio
n or
bro
ken
wire
pre
sent
. R
epai
r or r
epla
ce.
Volta
ge d
rop
from
ther
mos
tat t
o te
rmin
al W
on
igni
tion
cont
rol.
Inco
rrec
t wire
siz
e fr
om th
erm
osta
t to
term
inal
W o
n ig
nitio
n co
ntro
l.
Yes
Rep
lace
igni
tion
cont
rol.
Is
prop
er
volta
ge s
uppl
ied
to tr
ansf
orm
er?
Chec
k el
ectr
ical
con
nect
ions
and
pow
ersu
pply
to tr
ansf
orm
er.
Rep
air a
s ne
cess
ary.
No
Yes
24
Plug
hea
ter i
n.
No
Yes
Rep
lace
red
LED
No
Two
Tim
esD
iffer
entia
l air
pres
sure
sw
itch
cont
acts
hav
eno
t clo
sed.
Indi
cate
s no
air
prov
ing
in fa
nse
ctio
n of
hea
ter
Is
pres
sure
sw
itch
stuc
k op
en?
Che
ckco
ntin
uity
.
Yes
No
Is
fan
loos
e on
mot
or s
haft
?Ye
sTi
ghte
n fa
n bl
ade
set s
crew
Is
prop
er
volta
ge s
uppl
ied
to fa
n m
otor
?
No
Yes
Def
ectiv
e m
otor
.R
epla
ce m
otor
Isig
nitio
n m
odul
ere
ceiv
ing
prop
ervo
ltage
?
No
Def
ectiv
e ig
nitio
n m
odul
e.R
epla
ce m
odul
e.
Yes
Def
ectiv
e w
iring
or
conn
ectio
ns to
mot
or.
Rep
air o
r rep
lace
wiri
ng a
nd c
onne
ctio
nsN
o
Prov
ide
prop
er v
olta
ge.
Chec
k el
ectr
ical
sup
ply,
circ
uit b
reak
ers,
etc
.
Is
prop
er
volta
ge s
uppl
ied
to h
eate
r?
Yes
No
Red
LED
Fla
shin
g
One
Tim
eD
iffer
entia
l air
pess
ure
switc
hco
ntac
ts a
recl
osed
bef
ore
fan
mot
or s
tart
s.
Is p
ress
ure
switc
hst
uck
clos
ed?
Chec
k co
ntin
uity
.
Yes
No
Rep
lace
air-
prov
ing
switc
h
Def
ectiv
e w
ire o
r loo
seco
nnec
tion
to a
ir pr
essu
re s
witc
h. R
epai
ras
nee
ded
Ensu
re c
oppe
r or c
lear
pre
ssur
e sw
itch
tube
s ar
e no
t plu
gged
or k
inke
d.Ch
eck
diff
eren
tial a
ir pr
essu
re o
rific
es.
If pl
ugge
d, c
lean
with
air
pres
sure
.Pr
essu
re s
witc
h ou
t of c
alib
ratio
n,re
plac
e pr
essu
re s
witc
h.
25
Is
burn
er b
oxga
sket
ing
torn
, or
mis
sing
?
No
Yes
Rep
lace
bur
ner b
oxga
sket
ing.
ens
ure
prop
erse
alin
g of
all
burn
er b
oxco
mpa
rtm
ents
.N
o
Thre
e Ti
mes
Igni
tion
failu
re.
The
con
trol
mod
ule
is in
safe
ty lo
ckou
t.
Is
prop
er fu
elsu
pplie
d to
hea
ter
inle
t?
Conn
ect p
rope
rga
s su
pply
tohe
ater
. O
pen
all
gas
shut
off v
alve
s.
Yes
No
Is
prop
er g
aspr
essu
re s
uppl
ied
to h
eate
r?
Yes
Prov
ide
prop
er g
assu
pply
and
pre
ssur
e to
heat
er.
Ref
er to
data
plat
e
No
Doe
s ga
s co
ntro
l val
ve
open
? C
heck
for
man
ifold
pres
sure
at
outle
t of
cont
rol v
alve
Is ig
nito
rpr
oper
lyga
pped
?
Are
24 v
olts
sup
plie
dto
gas
con
trol
valv
e?
Def
ectiv
ega
s c
ontr
olva
lve.
Rep
lace
it.
Yes
Yes
Chec
k ig
nite
r gap
and
rega
p, if
nec
essa
ry, t
osp
ecifi
catio
ns.
-- D
efec
tive
wire
s or
co
nnec
tions
, Rep
air o
r
repl
ace.
-- D
efec
tive
igni
tion
cont
rol m
odul
e.
No
No
No
Doe
s ig
nite
rsp
ark?
Yes
Is
igni
ter h
igh
volta
gele
ad c
onne
cted
?
No
No
Conn
ect h
igh
volta
ge le
ad
Yes
A. C
heck
hig
h vo
ltage
lead
for c
ontin
uity
and
tigh
tco
nnec
tions
. R
epla
ce if
defe
ctiv
e.
B.
Def
ectiv
e, im
prop
erly
ga
pped
, or d
irty
igni
ter,
Rep
lace
, reg
ap, o
r cle
anig
nite
r.
C.
Def
ectiv
e Ig
nitio
n co
ntro
l.
R
epla
ce.c
ontr
ol
Fiv
e T
imes
If co
ntro
l mod
ule
does
not
rese
t, th
en re
plac
e it.
(Inte
rnal
boa
rd fa
ult.)
If m
odul
e re
sets
, the
n ha
ve q
ualif
ied
elec
tric
ian
chec
k po
wer
sour
ce fo
r pow
er q
ualit
y pr
oble
ms.
(Fre
quen
cy, l
ine
nois
e, li
nesp
ikes
, loo
se c
onne
ctio
ns, t
oo s
mal
l wire
gau
ge.)
Flam
e se
nse
rela
ted
prob
lem
s. C
heck
for c
rack
ed o
r dir
ty fl
ame
sens
or,
impr
oper
ly p
ositi
oned
sen
sor,
or p
oor f
lam
e se
nse
grou
nd.
Four
Tim
esLo
ckou
t fro
mto
o m
any
flam
e lo
sses
.
26
Doe
s ig
nitio
n co
ntro
lre
ceiv
e 24
VAC
at
term
inal
W d
urin
gig
nitio
n se
quen
ce?
No
Poor
ele
ctric
alco
nnec
tions
, rep
air
or re
plac
eIm
prop
erly
siz
edel
ectr
ical
wiri
ngfr
om th
erm
soat
toco
ntro
ller.
Res
ize
elec
tric
lal w
iring
.
Yes
Electrical Connection and Ladder Diagram
SINGLE STAGE THERMOSTAT & GAS CONTROL
27
HI LO
TWO STAGE THERMOSTAT & GAS CONTROL
28
Heater Component Function
Burner
Cast iron component used to channel gas and provide anarea at which the fuel may ignite.
Burner Orifice
Brass metering device used to feed gas to burner at aspecific rate.
Burner Tubes
Conducts the heat provided by the ignition of fuel gas at theburner.
Differential Air Pressure Switch
Safety device used to insure that proper positive andvacuum pressures are within the burner box before the gasvalve is opened.
Direct Spark Ignition Control Module
Electronic printed circuit board which sends and receivesvoltages to various controls in an automatic ignition system.An important safety feature of the control board is that it willshut down the entire heater, thereby stopping the flow offuel 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 fanhousing. It is used to create pressures within thed burnerbox used in the distribution of burner flame down the burnertubes.
Gas Control Valve
Electrical device consisting of a low pressure regulator andelectrical solenoids used for the control of gas flow to theburner assembly. The control is available as single stage ortwo stage. A feature of the two stage control valve is it’sability to modulate from a first stage (minimum) heatposition to a second stage (maximum) heat position, ifneeded, to satisfy the temperature requirements of thebuilding. This results in less temperature variation andpotentially lower fuel consumption.
Gas Hose
Flexible connector used to convey gas from supply line inbuilding to heater.
Igniter
Ignition device used on automatic direct spark ignitioncontrol systems. Ignites gas by spark.
Motor
Electric device used to force air through burner box to createpressure used in the ignition of the heater.
Reflector
Polished aluminum canopy supported over the burnertubes. Used to gather and reflect the radiant heat providedby the burner tubes back down to ground level.
Regulator
Mechanical device used in L.P. and natural gas distributionsystems to reduce a higher inlet pressure to a preset lowerpressure. The regulator is responsible to supply a steadyoutlet pressure to the heater(s) despite changes in inletpressure, heater demand and weather conditions.
Thermostat
A component which responds to a change in temperature .This component is available for single stage or two stageheating. The two stage thermostat incorporates twoindependent control circuits which interconnect to theheater’s two stage gas control valve, thereby providing lowor high heat depending on thermostat setpoint.
Transformer
Electrical control used to accept line power supply primaryvoltage and reduce it to lower secondary voltage to operatecertain control systems.
29
Parts Identification
PARTS SCHEMATIC
30
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PARTS LIST
31
AT15040’ 50’
------------------------------------------------------------------------------------------
N/A 2458628140 N /A------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
572649 572337572338 572338------------------------------------------------------------------------------------------
572349572346
------------------------------------------------------------------------------------------
-------------------------------
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
572352572353
31
AT12540’ 50’
247372485924587
----------------------------------------------
24589268042680524592222990825508347223012680681218261372614008257
572339 57234057233809242
573348572889572348572345
268102207622078
------------------------------24963249642459826809
57288324590249622484807715248490910427178272612717709199207130554807148065530081524864248582485624975248572486126129
AT10030’ 40’
-------------------------------------------------------------------------------------------------------------------- 24586
-------------------------- N/A -----------------------------
--------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
572343 572341572344 572342------------------------------------------------------------------------------------------
572347570053
------------------------------------------------------------------------------------------
572350572351
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Item Description
1 Air Turbulation Strip2 Vent Hood3 Tube, Uncoated, 4 in. x 10 ft.4 Tube, Aluminized, 4 in. x 10 ft.
Stainless Steel, 4in. x 10 ft.5 Clamp6 Cover, Burner Box, w/Hinges & LEDs Single Stage
Two Stage7 Amber LED8 Red LED9 Window, Plug
10 O-Ring11 Ignition Control12 Igniter w / Bracket13 Transformer14 Harness,Wire15 Ignition Cable16 Hinge17 Burner Assembly
LPNG
18 Nut19 Spacer,Stud, with Hardware20 Copper Pressure Tube with fittings21 Burner Orifice LP
NG
22 Manifold23 Gas Control Valve Single Stage LP
NGTwo Stage LP
NG24 Motor25 Fan Housing26 Fan Wheel27 Switch, Differential Air Pressure w/ Orifice28 Tube, Pressure Switch29 Ceramic Gasket30 Tube, Swaged, 8 in. w/ Flange31 Chain32 Open Eye Bolt33 S-Hook34 Open Eye Lag Screw35 Hanger36 Reflector37 Support, Reflector38 Latch39 Hose, w / Adapter, Rigid x Swivel40 Shut off Valve41 Nipple 1/2 x 3 in.42 Regulator, Second Stage, LP Gas43 Sediment Trap44 Bracket, Gas Control Valve45 Flex Tube, 4 in. Dia. x 8 ft.46 Tube, Air Inlet47 Coupling / Flange Assembly48 Clamp, Flex Tube49 Air Inlet End Cap50 Power Cord
NOTE: Gasket for fan housing discharge is Part # 24850 N/A: Not applicableComplete gasket kit for burner box is Part # 26746Complete motor and fan assembly is Part # 24961
Contact your local L.B. White dealer for replacement partsand service or call the L.B. White Co., Inc. at (800) 345-7200for assistance. Be sure that you have your heater modelnumber and configuration number when calling.
L.B. White Co., Inc. warrants that the component parts of itsheater are free from defects in material and workmanship,when properly installed, operated, and maintained inaccordance with the Instal lation and MaintenanceInstructions, safety guides and labels contained with eachunit. If, within 12 months from the date of purchase bythe end user, any component is found to be defective,L.B. White Co., Inc. will at its option, repair or replace thedefective part or heater, with a new part or heater, F.O.B.,Onalaska, Wisconsin.
A warranty card on file at L.B. White will automaticallyqualify a unit and its component par ts for warrantyconsideration. If a warranty card is not on file, a copy of thebil l of sale wil l be required to establish warrantyqualification. If neither is available, the warranty period willbe 12 months from date of shipment from L B. White.
Warranty Policy
Replacement Parts and Service
HEATER
PARTS
L.B. White Co., Inc. warrants that replacement partspurchased from the company and used on the appropriateL. B. White equipment are free from defects both in materialand workmanship for 12 months from the date ofpurchase by the end user. Warranty is automatic if acomponent is found defective within 12 months of the datecode marked on the part. If the defect occurs more than 12months later than the date code but within 12 months fromthe date of purchase by the end user, a copy of a bill of salewill be required to establish warranty qualification.
The warranty set forth above is the exclusive warrantyprovided by L.B. White, and all other warranties, includingany implied warranties or merchantability or fitness for aparticular purpose, are expressly disclaimed. In the eventany implied warranty is not hereby effectively disclaimeddue to operation of law, such implied warranty is limited induration to the duration of the applicable warranty stated
above. The remedies set forth above are the sole andexclusive remedies available hereunder. L.B. White will notbe liable for any incidental or consequential damagesdirectly or indirectly related to the sale, handling or use ofthe equipment, and in any event L.B. White's liability inconnection with the equipment, including for claims basedon negligence or strict liability, is limited to the purchaseprice.
Some states do not allow limitations on how long an impliedwarranty lasts, so the above limitation may not apply to you.Some states do not allow the exclusion or limitation ofincidental or consequential damages, so the abovelimitation or exclusion may not apply to you. This warrantygives you specific legal rights, and you may also have otherrights which vary from state to state.
32