Navien NPE-24AWE User's Information Manual page 6

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 or personal
injury.
Do not operate this water heater
without proper flue system.
Doing so may result in fire or carbon
monoxide (CO) poisoning, which may
result in property damage or personal
injury. Inspect the flue 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 flue
pipes, flue 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.
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.
6 Safety Information
CAUTION
Do not attempt to repair or replace
any part of the water heater, unless
it is specifically recommended in this
manual.
For all other service, contact an
authorised technician or licensed
professional. Improper adjustments,
alterations, service, or maintenance
may lead to property damage, personal
injury and will void your warranty.
Do not operate the water heater 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 water heater.
Doing so may result in product damage
or personal injury.
Do not attempt to change the water
temperature while the water heater
is being used.
Doing so may result in personal injury.
Do not turn on the water heater
unless the water and gas supplies
are fully opened.
Doing so may damage the water
heater.
Do not turn on the water if the cold
water supply shut-off valve is closed.
Doing so may damage the water
heater.
Do not use this water heater for
anything other than its intended
purpose, as described in this manual.