Raypak 122-322, Operating And Installation Instructions

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DANGER:
Make sure the gas on which the heater will operate is the same type as that specified
on the heater 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 heater. Instead, shut off the gas supply at a
location external to the appliance.
WARNING:
Do not use this heater if any part has 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 operation, serious personal injury, fire, or
damage to the heater, never violate the following safety rules:
1. Always keep the area around the heater free of combustible materials,
gasoline, and other flammable liquids and vapors.
2. Heater should never be covered or have any blockage to the flow of fresh air
to the heater.
WARNING:
Risk of electrical shock. More than one (1) disconnect switch may be required to de-
energize the equipment before servicing.
CAUTION:
Operation of this heater on low temperature systems requires special piping to insure
correct operation.
CAUTION:
If this heater is to be installed above radiation level, it must be provided with a low
water cut-off device at the time of heater installation.
CAUTION:
This heater requires forced water circulation when the burner is operating. See
minimum and maximum flow rates. Severe damage will occur if the heater is
operated without proper water flow circulation.
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CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the state of California to cause
cancer, birth defects or other reproductive harm.