Navien NCB-180 Service Manual page 13

DANGER
INSTALLATION REQUIREMENTS
 Installation conditions may affect how the boiler is
serviced. Read all related information in the
"Installation Manual".
 The Boilers must be installed according to all local and
state codes or, in the absence of local and state codes,
the most recent edition of the "National Fuel Gas Code
(ANSI Z223.1/NFPA 54)" in the USA or the "National Gas
and Propane Installation Code (CAN/CSA B 149.1)" in
Canada.
 Massachusetts code requires this boiler to be installed
in accordance with Massachusetts Plumbing and Fuel
Gas Code 248 CMR Section 2.00 and 5.00.
DANGER
IMPORTANT SAFETY PREAUTIONS
 Read and understand this safety information before
operating or servicing this Navien Boiler.
 Confirm the location of the gas shut-off valve. Close
the manual shut-off valve if the Navien Boiler ever
becomes subjected to overheating, fire, flood, physical
damage or any other such damaging condition during
servicing.
 DO NOT turn on the boiler unless water and gas
supplies are fully opened.
 DO NOT turn on the boiler if the cold water supply
shut-off valve is closed.
 Make certain power to the boiler is "OFF" before
removing the front cover for any reason.
 Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.
 Improper adjustment,
maintenance can cause property damage, personal
injury, or death.
 To prevent scalding, always check the temperature of
the hot water after servicing.
 DO NOT attempt to change the water temperature
while someone is using the boiler.
 DO NOT use parts other than those specified for this
equipment.
 DO NOT operate the boiler if you feel something is
wrong with the unit.
 DO NOT allow children to operate or otherwise handle
the unit.
10 NCB Service Manual
alteration, service or
WARNING
GAS TYPE and AC VOLTAGE
This boiler is configured for Natural Gas from the factory. If
conversion to Propane Gas is required, the conversion kit
supplied with the boiler must be used.
 Be sure to use 120 VAC, 60 Hz, minimum 2 A current.
Using abnormally high or low AC voltage may cause
abnormal operation, and may reduce the life
expectancy of this product.
If the unit does not match requirements, do not
service, please contact Navien immediately.
WARNING
GAS CONVERSION
The conversion kit shall be installed by a qualified service
agency* in accordance with Navien America's instructions
and all applicable codes and requirements of the
authority having jurisdiction. The information in these
instructions must be followed to minimize the risk of fire
or explosion or to prevent property damage, personal
injury or death. The qualified service agency is responsible
for the proper installation of this kit. The installation is not
proper and complete until the operation of the converted
appliance is checked as specified in the manufacturer's
instructions supplied with the kit.
* A qualified service agency is any individual, firm,
corporation or company which either in person or through a
representative is engaged in and is responsible for the
connection, utilization, repair or servicing of gas utilization
equipment or accessories; who is experienced in such work,
familiar with all precautions required, and has complied with
all of the requirements of the authority having jurisdiction.
In Canada:
The conversion shall be carried out in
accordance with the requirements of the provincial
authorities having jurisdiction and in accordance with the
requirements of the CAN‐B149.1 and CAN1‐B149.2
Installation Code.
Navien America Inc. is not liable for any property
damage and/or personal injury resulting from
unauthorized conversions.
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