Navien NCB-180 Service Manual page 14

WARNING
 Shut off the gas supply if the boiler is damaged.
Have your installer or plumber show you the location
of the gas shut off valve and demonstrate how to close
the valve. If the boiler is damaged as a result of
overheating, fire, flood, or any other reason, close the
manual shut off valve and do not operate the boiler
again until it has been inspected by a qualified
technician.
 Do not store or use gasoline or other flammable
liquids near this boiler.
Doing so may result in fire or explosion.
 Do not place combustibles, such as newspapers or
laundry, near the boiler or venting system.
Doing so may result in a fire.
 Do not place or use hair sprays, spray paints, or any
other compressed gases near the boiler or venting
system, including the vent termination.
Doing so may result in fire or explosion.
 Do not operate the boiler with the front cover
opened.
Doing so may result in fire or carbon monoxide (CO)
poisoning, which may result in property damage,
personal injury, or death.
 Do not operate this boiler without proper venting.
Doing so may result in fire or carbon monoxide (CO)
poisoning, which may result in property damage,
personal injury, or death. Inspect the vent termination
and air intake supply annually to ensure proper
operation of the boiler. Turn off and discontinue use of
the boiler if any of the vent pipes, vent elbows, or
intake pipes are damaged in any way, separated at a
joint, or show evidence of corrosion, rusting, or
melting.
 Do not touch the power cord or internal
components of the boiler with wet hands.
Doing so may result in electric shock.
CAUTION
 Do not attempt to repair or replace any part of the
boiler, unless it is specifically recommended in this
manual.
For all other service, contact an authorized technician
or licensed professional. Improper adjustments,
alterations, service, or maintenance may lead to
property damage, personal injury, or death and will
void your warranty.
 Do not operate the boiler if you feel something is
wrong with it.
Doing so may result in product damage or personal
injury.
 Do not allow children to operate or access the
boiler.
Doing so may result in product damage or personal
injury.
 Do not attempt to change the water temperature
while the boiler is being used.
Doing so may result in personal injury.
 Do not turn on the boiler unless the water and gas
supplies are fully opened.
Doing so may damage the boiler.
 Do not turn on the water if the cold water supply
shut-off valve is closed.
Doing so may damage the boiler.
 Do not use this boiler for anything other than its
intended purpose, as described in this manual.
 Do not remove the front cover unless the power to
the boiler is turned off or disconnected.
Failure to do so may result in electric shock.
 When servicing the controls, label all wires prior to
disconnecting them.
Failure to do so may result in wiring errors, which can
lead to improper or dangerous operation.
 Do not use unapproved replacement or accessory
parts.
Doing so may result in improper or dangerous
operation and will void the manufacturer's warranty.
 Do not place anything in or around the vent
terminals, such as a clothes line, that could
obstruct the air flow in or out of the boiler.