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WARNINGS
Pay Attention to These Terms
Indicates the presence of immediate hazards which will cause severe personal injury, death or
DANGER
A
substantial property damage if ignored.
Indicates the presence of hazards or unsafe practices which could cause severe personal injury,
WARNING
A
death or substantial property damage if ignored.
Indicates the presence of hazards or unsafe practices which could cause minor personal injury
CAUTION
A
or product or property damage if ignored.
CAUTION used without the warning alert symbol indicates a potentially hazardous condition
CAUTION
which could cause minor personal injury or product or property damage if ignored.
Indicates special instructions on installation, operation, or maintenance which are important but
NOTE
not related to personal injury hazards.
DANGER: Make sure the gas on which the boiler will
A
operate is the same type as that specified on the heater
rating plate.
WARNING: Boiler using propane gas are different from
A
natural gas models. A natural gas heater will not function
safely on propane and vice versa. Conversions of boiler
gas type should only be made by qualified installers using
factory supplied components. The heater should only
use the fuel type in accordance with listing on rating
plate. Any other fuel usage will result in death or serious
personal injury from fire and/or explosion.
WARNING: Should overheating occur or the gas
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supply valve fail to shut, do not turn off or disconnect the
electrical supply to the heater. Instead, shut off the gas
supply at a location external to the heater.
WARNING: Do not use this heater if any part has
A
been under water. Immediately call a qualified service
technician to inspect the heater 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
A
operation, serious personal injury, fire, or damage to the
heater:
•
Always keep the area around the heater free of
combustible materials, gasoline, and other flammable
liquids and vapors.
•
Heater should never be covered or have any blockage
to the flow of fresh air to the heater.
Revision 2 reflects the following changes:
Removed California Proposition 65 warning.
CAUTION: This boiler requires forced water circulation
when the burner is operating. See I&O Manual for flow
rate information. Severe damage will occur if the heater
is operated without proper water flow circulation.
WARNING: Risk of electrical shock. More than one
A
disconnect switch may be required to de-energize the
equipment before servicing.
NOTE: Minimum pipe size for the heater inlet/outlet
connections is dependent on the equivalent length of
piping between the load loop and the heater loop, the
operating conditions and the size of the heater.
WARNING: Both natural gas and propane have an
A
odorant added to aid in detecting a gas leak. Some people
may not physically be able to smell or recognize this
odorant. If you are unsure or unfamiliar with the smell
of natural gas or propane, ask your local gas supplier.
Other conditions, such as "odorant fade," which causes
the odorant to diminish in intensity, can also hide,
camouflage, or otherwise make detecting a gas leak by
smell more difficult.
CAUTION: If this boiler is to be installed in a negative
A
or positive pressure equipment room, there are special
installation requirements. Consult factory for details.
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