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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.

2. All installations and applications of L.B. White heaters

must meet all relevant local, state and national codes.

Included are propane gas, natural gas, electrical, and

safety codes.  Your local fuel gas supplier, a local

licensed electrician, the local fire department or

similar government agencies, or your insurance agent

can help you determine code requirements.

Also refer to:

-- ANSI/NFPA 58, latest edition, Standard for

Storage and Handling of Liquefied Petroleum

Gas and/or:

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

-- ANSI/NFPA 70, National Electrical Code.

3. We cannot anticipate every use which may be made of

our heaters.  Check with your local fire safety authority

if you have questions about applications.

4. Do not move, handle, or service heater while in

operation or connected to a power or fuel supply.

5. For safety, never operate this heater with any of its

safety devices that have been bypassed.  Do not

operate this heater unless all of these features are

fully functioning.

6. Do not operate the heater with panels removed.  

7. Do not locate fuel gas containers or fuel supply hoses

anywhere near the blower outlet of the heater.

8. Forced-air heaters shall not be directed toward any

propane gas container within 20 feet (6.10 m).

9. Do not block air intakes or discharge outlets of the

heater.  Doing so may cause improper combustion or

damage to heater components leading to property

damage or animal loss.

10. The hose assembly shall be visually inspected on an

annual basis.  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 animals,

building materials, and contact with hot surfaces

during use.  The hose assembly shall be that specified

by the manufacturer.  See parts list.

11. Check for gas leaks and proper function upon heater

installation, periodically, and when relocating the

heater, its gas supply, or gas supply line.

12. This heater should be inspected for proper operation

by a qualified service person before building

repopulation, each use, and at least annually.

13. Always turn off the gas supply to the heater when the

heater is not in use.

14. This heater is equipped with a three-prong (grounding)

plug for your protection against shock hazard and

must be plugged directly into a properly grounded

three-prong receptacle.  Failure to use a properly

grounded receptacle can result in electrical shock,

personal injury, or death.

15. If gas flow is interrupted and flame goes out, do not

relight the heater until you are sure that all gas that

may have accumulated has cleared away.  In any

event, do not relight the heater for at least 5 minutes.

16. In a hanging type installation, rigid pipe or copper

tubing coupled directly to the heater may cause gas

leaks during movement, and therefore must not be

used.  Use only gas hose assemblies that are rated

and approved for propane gas and natural gas in a

hanging type of installation.

17. Installations not using the gas hose supplied with this

appliance must connect dimensionally using

American National Standard Wrought Steel and

Wrought Iron Pipe B36/10-1970.  (Aluminum piping or

tubing shall not be used.)  Copper tubing when used

for conveying natural gas, shall be internally tinned or

equivalently treated to resist sulphur.

18. If your unit utilizes propane vapor, the minimum

propane gas supply cylinder size should be a 100

pound propane gas supply cylinder.  When using a

cylinder supply system, it should be arranged to

provide vapor withdrawal from operating cylinder.

19. When the heater is to be stored indoors, the

connection between the propane gas supply

cylinder(s) and

20. The heater must be disconnected and the cylinder(s)

removed from the heater and stored in accordance 

6

Summary of Contents for 377

Page 1: ...d by C S A International in accordance with Standard ANSI Z83 7z CSA 2 14 and is listed and approved as a direct gas fired circulating construction heater with intended use for primarily the temporary heating of buildings under construction alteration or repair As an alternative use this heater has also been tested and evaluated by the L B White Co Inc for the heating of agricultural animal confin...

Page 2: ...al injury or loss of life GENERAL HAZARD WARNING Failure to comply with the precautions and instructions provided with this heater can result in Death Serious bodily injury or burns Property damage or loss from fire or explosion Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning Electrical shock Read this Owner s Manual before installing or using this product Only properl...

Page 3: ...nstallation and Service Guide is available at no charge to qualified personnel by contacting the local L B White distributor dealer or the L B White Company 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 ...

Page 4: ...al Gas Gas M Mo od de el l Ventilation Air Required to Support Combustion Burner Manifold Pressure Net Weight lbs Shipping Weight lbs Electrical Supply Volts Hz Phase Amp Draw Starting Amps Includes Igniter Dimensions Inches L x W x H Minimum Safe Distances From Nearest Combustible Materials STARTING CONTINUOUS OPERATION Motor Characteristics Fuel Consumption Per Hour Inlet Gas Supply Pressure Acc...

Page 5: ...ly trained service people must repair the leak check for further leakages and then relight the appliance for you WARNING Do not use this heater for heating human living quarters 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 sp...

Page 6: ...e gas container within 20 feet 6 10 m 9 Do not block air intakes or discharge outlets of the heater Doing so may cause improper combustion or damage to heater components leading to property damage or animal loss 10 The hose assembly shall be visually inspected on an annual basis 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...

Page 7: ...oss of products building or even life A properly installed sediment trap will keep foreign materials from entering the gas valve and protect the safe functioning of that important safety component 10 Any heater connected to a piping system must have an accessible approved manual shut off valve installed within six feet 6 ft of the appliance it serves 11 Check all connections for gas leaks using ap...

Page 8: ... Thermostat failure may result in either an underheating or overheating condition which may damage critical products and or cause animal injury or death Critical products and or animals should be protected by a separate back up control system that limits high and low temperatures and also activates appropriate alarms 17 Take time to understand how to operate and maintain the heater by using this O...

Page 9: ...ther and tighten securely See Fig 4 The sediment trap assembly must always be mounted in a vertical position Make sure pipe thread compound that is resistant to both propane gas and natural gas is used in making all connections Check a all connections f for g gas l leaks u using a approved g gas l leak detectors FIG 4 1 Assemble according to the illustration and tighten all eyebolts securely See F...

Page 10: ...ock leading to personal injury or death THERMOSTAT INSTALLATION Start Up Instructions Shut Down Instructions 10 GAS SHUT OFF KNOB PILOT BUTTON PILOT OFF ON Follow steps 1 8 on initial start up after heater installation by a qualified gas heater service person For normal start up simply turn thermostat above room temperature The heater will start 1 Open all manual fuel supply valves and check for g...

Page 11: ... the fan and motor assembly and brush or blow off the fan wheel giving attention to the individual fan blades Additionally make sure the burner air inlet venturi ports and the throat of the casting are free of dust accumulation and the area between the heat chamber top and inside case is also free of dust c Observe and obey the Warning within these Cleaning Instructions This same Warning is also s...

Page 12: ...WITCH MOTOR GROUND THERMOSTAT NEUTRAL GROUND MOTOR HIGH LIMIT SWITCH GAS CONTROL VALVE WHITE WHITE WHITE BLACK BLACK BLACK BLACK BLACK GREEN BLACK BLACK BLACK OR RED BLACK OR RED AIR PROVING SWITCH NOT SUPPLIED ON SOME MODELS POWER CORD THERMOSTAT OPTIONAL JUMPER REMOVETO ADD THERMOSTAT NOTE IF AIR PROVING SWITCH IS NOT SUPPLIED POWER IS SENT DIRECTLYTO HIGH LIMIT SWITCH SEE DASHED LINE IF ANY OFT...

Page 13: ... mechanical energy Pilot Light Orifice A metering device used to supply gas for the dual purpose of igniting the main burner and heating the thermocouple Pilot Safety Control Valve A gas control valve which is held open by electrical power supplied by a pilot generator and which closes automatically to shut off the flow of gas to the main burner when the pilot flame is extinguished or becomes too ...

Page 14: ...PARTS SCHEMATIC Parts Identification 37 38 13 5A 10 5 4 11 12 3 6 35 2 1 N G SUPPLY L P GAS SUPPLY 24 22 16 25 14 17 18 15 39 38 20 19 21 13 8 7 29 34 33 32 30 40 31 27 26 9 23 26 14 ...

Page 15: ...old 07826 9 Orifice Propane Gas 21525 Orifice Natural Gas 21528 10 Thermostat with Bracket 05568 11 Cover Junction Box 03231 12 Junction Box 03230 13 Bracket Thermostat 05493 14 Thermocouple 18 in 03555 15 Tube Pilot with Nuts 22204 16 Orifice Pilot Propane Gas 02689 Orifice Pilot Natural Gas 02740 17 Pilot Assembly with Orifice Propane Gas 02729 Pilot Assembly with Orifice Natural Gas 02741 18 Sh...

Page 16: ...he d date o of p purchase b by the e end u user Warranty is automatic if a component is found defective within 12 months of the date code marked on the part If the defect occurs more than 12 months later than the date code but within 12 months from the date of purchase by the end user a copy of a bill of sale will be required to establish warranty qualification The warranty set forth above is the ...

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