L.B. White AW250, Owner'S Manual And Instructions

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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
s a fe d i s t a n c e s o f t h e h e a te r to t h e n e a r e s t
combustible materials. Minimum safe distances are
given on the heater nameplate and on page 4 of this
manual.
3. The heater may be used either indoors or outdoors.
When the heater is mounted outdoors, use only the
ductwork supplied in the outdoor mounting kit.
4. For heaters intended for outdoor installation, the
heater is to be installed at least 46 cm above the
ground or to a height that would prevent snow
blockage of heater’s air inlet.
5. The unit’s gas regulator (with pressure relief valve)
s h o u l d b e i n s t a l l e d o u t s i d e o f b u i l d i n g . A ny
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.
6. Insure that all accessories that ship within the heater
have been removed from inside of heater and
installed. This per tains to air diver ters, hose,
regulators, etc.
7. Make certain 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.
8. Any heater connected to a piping system must have
an accessible, approved manual shut of f valve
installed within 1.83 meters of the heater it serves.
9. 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 fur ther
tightening.
-- Fur thermore 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.
10. A qualified service agency must check for proper
operating gas pressure upon installation of the
heater.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury or death.
■
Disconnect power supply before wiring to prevent
electrical shock or equipment damage.
■
To avoid dangerous accumulation of fuel gas, turn off
gas supply at the appliance service valve before
starting installation, and perform gas leak test after
completion of installation.
■
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 and Explosion 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.