Navien NP-180 Service Manual page 10

WARRANTY EXCLUSIONS
This warranty does not cover the following conditions:
Damages, malfunctions, or failures resulting from failure to install the water heater in
•
accordance with applicable building codes, ordinances or normal plumbing and electrical
trade practices.
Damages, malfunctions or failures resulting from improper installation or failure to oper-
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ate and maintain the water heater in accordance with the manufacturer's instructions
provided.
Performance problems caused by improper sizing of the water heater or the gas supply
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line, the venting connection, combustion air openings, electric service voltage, wiring or
fusing.
Damages, malfunctions or all failures caused by conversion from natural gas to LP gas
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or LP gas to natural gas or attempt to operate with a type of gas not specified for the
water heater.
Damages, malfunctions or failures caused by operating the water heater with any parts
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removed or with parts that have been modified, altered or unapproved for installation.
• Damages, malfunctions or failures caused by abuse, negligence, alteration, accident,
fire, flood, freezing, lightning and other acts of God.
• Heat Exchanger failures caused by operating the water heater in a corrosive or contami-
nated atmosphere.
Damages, malfunctions or failures caused by poor water quality, lime or mineral build-up
•
or sediment build-up.
• Damages, malfunctions or failures caused by operating the unit at water temperatures
outside the factory calibrated temperature limits and/or exceeding the maximum setting
of the high limit control.
Heat Exchanger failures caused by operating the water heater when it is not supplied with
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potable water at all times.
Damages, malfunctions or failures caused by subjecting the heat exchanger to pressures
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or firing rates greater or lesser than those shown on the rating plate.
• Units installed outside of the fifty states (and the District of Columbia) of the United States
of America and outside of Canada.
Rating plate has been removed by an unauthorized person. A water heater should not be
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operated if the rating plate has been removed.
Damage due to freezing.
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Product Disposal Measures
Dispose of components of the heating system that require replacement in an environmentally
responsible manner.
Make sure that condensate disposal method is in accordance with local regulations.
©Navien America Inc. 2010
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NR/NP series service Manual Version 2.0