L.B. White 250 User Manual

Propane Gas

Vapor

Withdrawal

Congratulations!

You have purchased the finest convection 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 [phone].

Owner's Manual and Instructions

Norseman Heavy Duty Convection Construction Heaters

ATTENTION ALL USERS

This heater has been tested and evaluated by L.B. White Co., Inc as a direct fired
convection construction heater intended for use as the temporary heating of
buildings under construction, alteration, or repair.

The hheater sshall bbe uused oonly oon

noncombustible ssurfaces.

If you are considering using this product for any
applications other than its intended use, then please contact your fuel gas supplier
or the L.B. White Co., Inc.

150-22268-A

MODEL OUTPUT (Btuh) FUEL

341 250,000

WARNING

Fire and Explosion Hazard

■ Not for home or recreational vehicle use.

■ Installation of this heater in a home or

recreational vehicle may result in a fire or
explosion.

■ Fire or explosions can cause property

damage or loss of life.

FOR YOUR SAFETY

If you smell gas:

1. Open windows.

2. Don't touch electrical switches.

3. Extinguish any open flame.

4. Immediately call your gas supplier.

FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of
this or any other appliance.

WARNING

Fire and Explosion Hazard

■ Keep solid combustibles a safe distance

away from the heater.

■ Solid combustibles include wood or paper

products, building materials and dust.

■ Do not use the heater in spaces which

contain or may contain volatile or airborne
combustibles.

■ Volatile or airborne combustibles include

gasoline, solvents, paint thinner, dust
particles or unknown chemicals.

■ Failure to follow these instructions may

result in a fire or explosion.

■ Fire or explosions can lead to property

damage, personal injury or loss of life.

GENERAL HAZARD WARNING

■ Failure to comply with the precautions and instructions provided with this heater, can result in:

— Death
— Serious bodily injury or burns
— Property damage or loss from fire or explosion
— Asphyxiation due to lack of adequate air supply or carbon monoxide poisoning

■ Read this Owner’s Manual before installing or using this product.

■ Only properly-trained service people should repair or install this heater.

■ Save this Owner’s Manual for future use and reference.

■ Owner’s Manuals and replacement labels are available at no charge. For assistance, contact

L.B. White at 800-345-7200.

WARNING

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

■ Refer to data plate for proper gas supply pressure.

■ Gas pressure in excess of the maximum inlet pressure specified at the heater inlet can cause

fires or explosions.

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

■ Gas pressure below the minimum inlet pressure specified at the heater inlet may cause

improper combustion.

■ Improper combustion can lead to asphyxiation or carbon monoxide poisoning and therefore

serious injury or death.

2

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 heater. 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.

SECTION

PAGE

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

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

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

Installation Instructions

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

Burner and Gas Control Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Hose and Regulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Shut-Down Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Cleaning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Service Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Gas Pressure Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Heater Component Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Parts Identification

Parts Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Replacement Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Table of Contents

General Information

3

Maximum Input (BTUH) 250,000

1041 CFM

18 x 13 x 24

TOP TO CEILING 8 ft.
SIDES 4 ft.

FUEL
CONTAINER

30
34

SPECIFICATIONS

341

Propane

Fuel Type Gas

MMooddeell

Ventilation Air Required
to Support Combustion

Net Weight (lbs.)
Shipping Weight (lbs.)

Dimensions (Inches)
L x W x H

Minimum Safe
Distances From Nearest
Combustible Materials

Not ffor uuse oon ccombustible mmaterials

Fuel Consumption Per Hour

Inlet Gas Supply
Pressure Acceptable
at the Inlet of the
Pilot Safety Control Valve

MAX.

MIN.

23 PSIG.

4

Heater Specifications

6 ft. (1.83 m)

23 PSIG.

11.6 lbs.

Propane ggas aand nnatural ggas hhave mman-mmade 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 SSIGNAL TTO GGO 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.

■ 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.

■

FI N ALLY,

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 wwell. SSome ppeople ccannot
smell tthe oodor oof tthe mman-mmade cchemical aadded tto
propane oor nnatural ggas. YYou mmust 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.

■

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

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.

■

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.

■ 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!

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.

Asphyxiation HHazard