Raypak 500 - Manual (Page 4)

4
DANGER: Indicates the presence of immediate hazards which will cause severe
personal injury, death or substantial property damage if ignored.
WARNING: Indicates the presence of hazards or unsafe practices which could cause
severe personal injury, death or substantial property damage if ignored.
CAUTION: Indicates the presence of hazards or unsafe practices which could cause
minor personal injury or product or property damage if ignored.
NOTE:
Indicates special instructions on installation, operation, or maintenance which
are important but not related to personal injury hazards.
DANGER: Make sure the gas on which the boiler
will operate is the same type as that specified on the
boiler 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 boiler.
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:
• Always keep the area around the boiler free of
combustible materials, gasoline, and other
flammable liquids and vapors.
• Boiler should never be covered or have any
blockage to the flow of fresh air to the boiler.
WARNING - CALIFORNIA PROPOSITION
65: This product contains chemicals known to the
State of California to cause cancer, birth defects or
other reproductive harm.
WARNING: Risk of electrical shock. More than one
disconnect switch may be required to de-energize
the equipment before servicing.
CAUTION: This boiler requires forced water
circulation when the burner is operating. See
minimum and maximum flow rates. Severe damage
will occur if the boiler is operated without proper
water flow circulation.
CAUTION: If this boiler is to be installed above
radiation level, it must be provided with a low water
cut-off device at the time of boiler installation.
CAUTION: If this boiler is to be installed in a
negative or positive pressure equipment room, there
are special installation requirements. Consult factory
for details.
WARNINGS
Pay Attention to These Terms
NOTE: Minimum 18 AWG, 105°C, stranded wire
must be used for all low voltage (less than 30 volts)
external connections to the unit. Solid conductors
should not be used because they can cause
excessive tension on contact points. Install conduit
as appropriate. All high voltage wires must be the
same size (105°C, stranded wire) as the ones on the
unit or larger.