Navien NPE-180A2 User's Information Manual page 5

WARNING
Shut off the gas supply if the water heater
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 water heater is damaged as a result of
overheating, fire, flood, or any other reason,
close the manual shut off valve and do not
operate the water heater again until it has
been inspected by a qualified technician.
Do not store or use gasoline or other
flammable liquids near this water heater.
Doing so may result in fire or explosion.
Do not place combustibles, such as
newspapers or laundry, near the water
heater 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 water heater or venting system,
including the vent termination.
Doing so may result in fire or explosion.
Do not operate the water heater 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.
WARNING
Do not operate this water heater 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
water heater. Turn off and discontinue use of
the water heater 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 water heater with wet
hands.
Doing so may result in electric shock.
Safety Information 5