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DANGER: Make sure the gas on which the boiler will operate is the same type as that specified on the
boiler model and rating plate.
WARNING: Should overheating occur or the gas supply valve fail to shut, do not turn off or disconnect the
electrical supply to the boiler. Instead, shut off the gas supply at a location external to the appliance.
WARNING: Do not use this boiler if any part has been under water. Immediately call a qualified service technician
to inspect the boiler and to replace any part of the control system and any gas control which has been
under water.
WARNING: To minimize the possibility of improper operation, serious personal injury, fire, or damage to the boiler,
never violate the following safety rules:
1. Always keep the area around the boiler free of combustible materials, gasoline, and other
flammable liquids and vapors.
2. Never cover the boiler, lean anything against it, store trash or debris near it, stand on it, or in
any way block the flow of fresh air to the boiler.
WARNING: More than one (1) supply source. This appliance has provisions to be connected to more than one (1)
supply source. To reduce the risk of electrical shock, disconnect all such connections before servicing.
WARNING: Risk of electrical shock. More than one (1) disconnect switch may be required to de-energize the
equipment beforeservicing.
CAUTION: Operation of this boiler on low temperature systems requires special piping to insure correct
operation. Consult Sections E, F or G for piping details.
CAUTION: If this boiler is to be installed above radiation level, it must be provided with a low water cutoff device
at the time of boiler installation.
CAUTION: This boiler requires forced water circulation when the burner is operating. See sections D for minimum
and maximum flow rates. Severe damage will occur if the boiler is operated without proper water flow
circulation.
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