Safety Information; Safety Definitions; Safety Symbols; Instructional Symbols - Navien NCB-24LSWE Service Manual

1. Safety Information

1.1 Safety Definitions

The following safety symbols are used in this manual. Read
and follow all safety instructions in this manual to avoid
unsafe operating conditions, fire, explosion, property
damage, personal injury, or death.

1.2 Safety Symbols

DANGER
Indicates an imminently hazardous
situation which, if not avoided, could
result in severe injury or death.
WARNING
Indicates a potential hazardous
situation which, if not avoided, could
result in injury or death.
CAUTION
Indicates an imminent hazardous
situation which, if not avoided, may
result in minor or moderate injury.
Version 1.0

1.3 Instructional Symbols

IMPORTANT
Warns of a risk of damage and
environmental pollution.
NOTE
Indicates additional information that
is important but not related to
personal injury or property damage.

1.4 Safety Precautions

DANGER
FLAMMABLE MATERIALS
Keep the area around the boiler clear
and free from flammable materials.
 DO NOT place flammable liquids
such as oil or gasoline, near the
boiler.
 DO NOT place combustibles such
as newspapers and laundry, near
the boiler or the flue system.
 DO NOT place or use hair spray or
paint aerosols or any other type of
aerosol can near the boiler or the
flue system (including the flue
termination).
 DO NOT place anything in or
around the flue terminations that
could obstruct the air flow in and
out of the boiler, such as a clothes
line.
NCB Service Manual 5