L.B. White AD250 Owner's Manual And Instructions page 8

Safety Precautions
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.
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.
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, regional and
national codes. Included are L.P. gas, natural gas,
electrical, and safety codes.
supplier, a local licensed electrician, the local fire
department or similar government agencies, or your
insurance agent can help you determine code
requirements.
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.
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 or panel
removed.
7. Do not locate fuel gas containers or fuel supply hoses
within 6.10 meters of the blower outlet of the heater.
7
This includes the task of
You must
Your local fuel gas
After
8. 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.
9. 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,
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 wired for a three-wire electrical system.
There is a hot lead, neutral lead, and a ground lead.
The heater may or may not incorporate a plug in the
power cord on the heater and the plug may or may not
incorporate a pin for the ground wire. In any case, the
heater must be properly connected into a grounded
electrical supply using the ground lead in the power
cord. Failure to use a properly grounded electrical
supply can result in electrical shock, personal injury,
or death.
14. Direct spark 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.
15. 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 L.P. gas and natural gas in a hanging
type of installation.
16. Installations not using the gas hose supplied with this
appliance must connect dimensionally using BS1387
Medium Duty Galvanized Steel Tube.
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.
and contact with hot
(Aluminum