Navien NHB-055, Service Manual

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NHB Service Manual 9 Version 1.0
1.3 Symbols Used in the Instructions
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 oils or gasoline, etc.
near the boiler.
●
DO NOT place combustibles such as newspapers and
laundry etc. near the boiler or the venting system.
●
DO NOT place or use hair spray, spray paint or any other type
of spray can near the boiler or the venting system (including
the vent termination).
●
DO NOT place anything in or around the vent terminations
that could obstruct the air flow in and out of the boiler such
as a clothes line.
1.1 Safety Definitions
The following safety symbols are used in this manual. Read and
follow all safety instructions in this manual precisely 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 potentially hazardous situation which, if not
avoided, could result in injury or death.
CAUTION
Indicates a potentially hazardous situation that, if not avoided,
could result in property damage.
1. Safety Information