Navien NFB-301C User's Information Manual page 4

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.
Do not make any electrical connections before turning
off the electrical power supply at service entrance panel.
Doing so may result in severe personal injury or death.
4 Safety Information
California law requires the following Prop 65 warning to be
provided:
WARNING
This product can expose you to chemicals including lead, lead
compounds, and carbon bisulfide which are known to the
State of California to cause cancer and birth defects or other
reproductive harm. For more information, go to
www.P65Warnings.ca.gov.
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 turn on the boiler unless the water and gas
supplies are fully opened.
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.
This boiler has been approved for use in the USA and
Canada only.
Using the boiler in any other country will void the
manufacturer's warranty.
Should overheating occur or the gas supply fail to shut
off, turn off the manual gas valve to the appliance.