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WARNING
Asphyxiation Hazard. Fire Hazard. Explosion Hazard. This boiler requires regular
maintenance and service to operate safely. Follow the instructions contained in this manual.
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Improper installation, adjustment, alteration, service or maintenance can cause property damage,
personal injury or loss of life. Read and understand the entire manual before attempting installation,
start-up operation, or service. Installation and service must be performed only by an experienced, skilled,
and knowledgeable installer or service agency.
This boiler must be properly vented.
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This boiler needs fresh air for safe operation and must be installed so there are provisions for adequate
combustion and ventilation air.
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Asphyxiation Hazard. The interior of the venting system must be inspected and cleaned before the
start of the heating season and should be inspected periodically throughout the heating season for any
obstructions. A clean and unobstructed venting system is necessary to allow noxious fumes that could
cause injury or loss of life to vent safely and will contribute toward maintaining the boiler's efficiency.
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Installation is not complete unless a safety relief valve is installed in the supply piping. - See the System
Piping Section of this manual for details.
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This boiler is supplied with safety devices which may cause the boiler to shut down and not re-start
without service. If damage due to frozen pipes is a possibility, the heating system should not be left
unattended in cold weather; or appropriate safeguards and alarms should be installed on the heating
system to prevent damage if the boiler is inoperative.
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Burn Hazard. This boiler contains very hot water under high pressure. Do not unscrew any pipe fittings
nor attempt to disconnect any components of this boiler without positively assuring the water is cool and
has no pressure. Always wear protective clothing and equipment when installing, starting up or servicing
this boiler to prevent scald injuries. Do not rely on the pressure and temperature gauges to determine the
temperature and pressure of the boiler. This boiler contains components which become very hot when
the boiler is operating. Do not touch any components unless they are cool.
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Respiratory Hazard. Boiler materials of construction, products of combustion and the fuel contain
alumina, silica, heavy metals, carbon monoxide, nitrogen oxides, aldehydes and/or other toxic or harmful
substances which can cause death or serious injury and which are known to the state of California to
cause cancer, birth defects and other reproductive harm. Always use proper safety clothing, respirators
and equipment when servicing or working nearby the appliance.
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Failure to follow all instructions in the proper order can cause personal injury or death. Read all
instructions, including all those contained in component manufacturers manuals which are provided with
the boiler before installing, starting up, operating, maintaining or servicing.
All cover plates, enclosures and guards must be in place at all times.
DANGER
Explosion Hazard. Electrical Shock Hazard. Burn Hazard. This boiler uses flammable
gas, high voltage electricity, moving parts, and very hot water under high pressure. Assure that all
gas and electric power supplies are off and that the water temperature is cool before attempting any
disassembly or service.
Do not attempt any service work if gas is present in the air in the vicinity of the boiler. Never modify,
remove or tamper with any control device.
107672-03 - 5/18
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