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L.B. White AW250 User Manual

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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 L.P. gas, natural gas, electrical,

and safety codes. Your local fuel gas supplier, a local

licensed electrician, the local fire department or

similar government agencies, or your insurance agent

can help you determine code requirements.

a. For U.S.A. installations and applications:

-- 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.

b. For Canadian Installations and Applications:

-- CAN1-B149.1 or CAN1-B149.2 Installation

Codes

-- CSA C22.1 Par t 1 Standard Canadian

Electrical Code. CSA C22.2 No. 3, Electrical

Features of Fuel-Burning Equipment.

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

operation or connected to a power or fuel supply.

4. This heater may be installed in areas subject to

washdown. This heater may only be washed on the

external case assembly—see Cleaning Instructions.

Do not wash the interior of the heater. Use only

compressed air, soft brush or dry cloth to clean the

interior of the heater and it’s components. After

external washdown, do not operate this heater until it

is completely dry. In any event, do not operate the

heater for at least one hour after external washdown.

5. For safety, this heater is equipped with a manual

reset high-limit switch and an air flow switch. Never

operate this heater with any safety device that has

been bypassed. Do not operate this heater unless all

of these features are fully functioning.

6. Do not operate the heater with its door open.

7. Do not locate fuel gas containers or fuel supply

hoses anywhere near the blower outlet of the heater.

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

appliance. Doing so may cause improper combustion

or damage to heater components leading to property

damage or animal loss.

9. The hose assembly (if provided) 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.

10. Check for gas leaks and proper function upon heater

installation, before building repopulation or when

relocating.

11. This heater should be inspected for proper operation

by a qualified service person before building

repopulation and at least annually.

12. Always turn off the gas supply to the heater if the

heater is not going to be used in the heating of

livestock.

13. This heater is equipped with a three-prong

(grounding) plug for your protection against shock

hazard and must be plugged directly into a properly

grounded three-prong receptacle. Failure to use a

properly grounded receptacle can result in electrical

shock, personal injury, or death.

14. Hot surface ignition heaters will make up to three

trials for ignition. If ignition is not achieved after the

third trial, the control system will lock out the gas

control valve. If gas is smelled after system lock out

has occurred, immediately close all fuel supply

valves. Do not relight until you are sure that all gas

that may have accumulated has cleared away. In any

event, do not relight for at least 5 minutes.

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