L.B. White AB250 - Manual (Page 7)

1. Read all safety precautions and follow L. B. White
recommendations when installing this heater. If
during the installation or relocating of heater, you
suspect that a part is damaged or defective, call a
qualified service agency for repair or replacement.
2. Make sure the heater is properly positioned before
use and is hung level. Observe and obey all minimum
safe distances of the heater to the nearest
combustible materials. Minimum safe distances are
given on the heater nameplate and on page 4 of this
manual.
3. The heater is approved for indoor use only.
4. The unit’s gas regulator (with pressure relief valve)
should be installed outside of building. Any regulators
inside the buildings must be properly vented to the
outside. Local, state and national codes always apply
to regulator installation. Natural gas regulators with
vent limiting device may be mounted indoors without
venting to outdoors.
5. Ensure that all accessories that ship within the heater
have been removed from inside of heater and
installed. This pertains to air diverters, hose,
regulators, etc.
6. Ensure that a sediment trap is installed at the gas
valve inlet to prevent foreign materials (pipe
compound, pipe chips and scale) from entering the
gas valve. Debris blown into the gas valve may cause
that valve to malfunction resulting in a serious gas
leak that could result in a possible fire or explosion
causing loss 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.
7. Any heater connected to a piping system must have an
accessible, approved manual shut off valve installed
within six feet (6 ft.) of the heater.
8. Check all connections for gas leaks using approved
gas leak detectors. Gas leak testing is performed as
follows:
-- Check all pipe connections, hose connections,
fittings and adapters upstream of the gas
control with approved gas leak detectors.
-- In the event a gas leak is detected, check the
components involved for cleanliness and
proper application of pipe compound before
further tightening.
-- Furthermore tighten the gas connections as
necessary to stop the leak.
-- After all connections are checked and any
leaks are stopped, turn on the main burner.
-- Stand clear while the main burner ignites to
prevent injury caused from hidden leaks that
could cause flashback.
-- With the main burner in operation, check all
connections, hose connections, fittings and
joints as well as the gas control valve inlet and
outlet connections with approved gas leak
detectors.
-- If a leak is detected, check the components
involved for cleanliness in the thread areas and
proper application of pipe compound before
further tightening.
-- Tighten the gas connection as necessary to
stop the leak.
-- If necessary, replace the parts or components
involved if the leak cannot be stopped.
-- Ensure all gas leaks have been identified and
repaired before proceeding.
9. A qualified service agency must check for proper
operating gas pressure upon installation of the heater.
10. Light according to instructions on heater or within
owner's manual.
11. It is extremely important to use the proper size and
type of gas supply line to assure proper functioning of
the heater. Contact your fuel gas supplier for proper
line sizing and installation.
WARNING
Fire oor eexplosion hhazard.
Can ccause pproperty ddamage, ssevere iinjury oor ddeath.
1. Disconnect power supply before wiring to prevent
electrical shock or equipment damage.
2. To avoid dangerous accumulation of fuel gas, turn
off gas supply at the heater’s service valve before
starting installation, and perform gas leak test after
completion of installation.
3. Do not force the gas control knob. Use only your
hand to turn the gas control knob. Never use any
tools. If the knob will not operate by hand, the
control should be replaced by a qualified service
technician. Force or attempted repair may result in
fire or explosion.
7
Installation Instructions
GENERAL
WARNING
Fire aand EExplosion H Hazard
■ Do not use open flame (matches, torches, candles,
etc.) in checking for gas leaks.
■ Use only approved leak detectors.
■ Failure to follow this warning can lead to fires or
explosions.
■ Fires or explosions can lead to property damage,
personal injury or loss of life.