Navien NCB-20LHWE, Installation & Operation Manual

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5 Safety Information
WARNING
This appliance can be used by children
aged from 8 years and above and
persons with reduced physical, sensory
or mental capabilities or lack of
experience and knowledge if they have
been given supervision or instruction
concerning use of the appliance in a
safe way and understand the hazards
involved. Children shall not play with
the appliance. Cleaning and user
maintenance shall not be made by
children without supervision.
WARNING
Do not store or use petrol 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 flue 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 flue system,
including the flue 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 or personal
injury.
Do not operate this boiler without
proper flue system.
Doing so may result in fire or carbon
monoxide (CO) poisoning, which may
result in property damage or personal
injury.
Do not touch the power cord or
internal components of the boiler
with wet hands.
Doing so may result in electric shock.
DANGER
HOT
BURN
To prevent burns:
Use the lowest operating temperature
setting necessary to provide
comfortably hot water.
If your household has children or
elderly or disabled residents, consider
using a lower temperature setting.
Read all the instructions in this
manual carefully before changing the
temperature setting.
Feel the water before using it on
children, the elderly, or the disabled.
DANGER
This boiler’s water temperature is set to
49°C at the factory for your safety and
comfort. Increasing the temperature
increases the risk of accidental scalding.
Water temperatures at or above 52°C
can cause instant scalding or severe
burns. Before you decide to change the
temperature setting, read the following
charts carefully.
Water
Temperature
Time in which a young child can suffer a
full thickness (3rd degree) burn
70°C Less than 1 second
60°C 1 second
55°C 10 seconds
49°C 10 minutes
37°C Very low scald risk
CAUTION
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. Verify proper
operation after servicing.
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 flue 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 the UK and Ireland only.
Using the boiler in any other country
will void the manufacturer’s warranty.