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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 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 in the UK and Ireland 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.
6
Safety Information
EC Conformity Declaration
Navien, hereby declares that the boiler models:
NCB-24LDWE, NCB-28LDWE, NCB-34LDWE, NCB-40LDWE
to which this declaration refers, conform to and comply with
the essential requirements of the following applicable European
Standards and Directives.
Gas appliances: Directive 2009/142/EC Standards EN 437 and
EN 15502
Boiler Efficiency: Directives 92/42/EEC and
93/68/EEC
Regulation (EN) No. 813/2013
Standards EN 15502
Low voltage: Directives 73/23/EEC and
93/68/EEC Standard EN 60335-1, EN 60335-2-30,
EN 60335-2-51, EN 50165
Electro-magnetic Compatibility: Directive 2004/108/EC
Pressure Vessels: Directive 97/23/EEC
Navien, manufactures its products using a Quality Assurance
system in compliance with Standard EN-ISO 9001:2000.
0063
Standards EN 55014
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