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ATTENTION -- CRITICAL POINTS TO REMEMBER!

Propane gas and natural gas have a distinctive odor.

Learn to recognize these odors.  (Reference “Fuel Gas

Odor” and “Odor Fading” sections above.

If you have not been properly trained in repair and service

of propane gas and natural gas fueled heaters, then do

not attempt to light heater, perform service or repairs, or

make any adjustments to the heater on propane gas or

natural gas fuel system.

Even if you are not properly trained in the service and

repair of the heater, ALWAYS be consciously aware of the

odors of propane gas and natural gas.

A periodic “sniff test” around the heater or at the

heater’s joints; i.e. hose, connections, etc., is a good

safety practice under any conditions.  If you smell even a

small amount of gas, CONTACT YOUR FUEL GAS

SUPPLIER IMMEDIATELY.  DO NOT WAIT!

Propane ggas aand nnatural ggas hhave m

man-m

made oodorants aadded sspecifically ffor ddetection oof ffuel ggas lleaks.

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

THAT’S  YYOUR  S

SIGNAL  TTO  G

GO  IINTO  IIMMEDIATE  AACTION!

Do not take any action that could ignite the fuel gas.  Do

not operate any electrical switches.  Do not pull any

power supply or extension cords.  Do not light matches

or any other source of flame.  Do not use your telephone.

Get everyone out of the building and away from the area

immediately.

Close all propane gas tank or cylinder fuel supply valves,

or the main fuel supply valve located at the meter if you

use natural gas.

Propane gas is heavier than air and may settle in low

areas.  When you have reason to suspect a propane

leak, keep out of all low areas.  

Natural gas is lighter than air and can collect around

rafters or ceilings.

Use your neighbor’s phone and call your fuel gas 

supplier and your fire department.  Do not re-enter the

building or area.

Stay out of the building and away from the area until

declared safe by the firefighters and your fuel gas 

supplier.

FINALLY,  let the fuel gas service person and the

firefighters check for escaped gas.  Have them air out

the building and area before you return.  Properly trained

service people must repair the leak, check for further

leakages, and then relight the appliance for you.

WARNING

Do not use this heater for heating human living quarters.

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 in humans leading to serious injury or death.

Symptoms of carbon monoxide poisoning can include

headaches, dizziness and difficulty in breathing.

Symptoms of improper combustion affecting livestock

can be disease, lower feed conversion, or death.

Asphyxiation H

Hazard

Some  ppeople  ccannot  ssmell  w

well.    S

Some  ppeople  ccannot

smell  tthe  oodor  oof  tthe  m

man-m

made  cchemical  aadded  tto

propane oor nnatural ggas.  YYou m

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 and your local natural

gas supplier (utility) will be more than happy to give you

a “scratch and sniff” pamphlet.  Use it to become

familiar with the fuel gas odor.  

Smoking can decrease your ability to smell.  Being

around an odor for a period of time can affect your

sensitivity to that particular odor.  Odors present in

animal confinement buildings can mask fuel gas odor.

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.

5

Safety Precautions

FUEL GAS ODOR

ODOR FADING -- NO ODOR DETECTED

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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