INSTALLATION AND OPERATION INSTRUCTIONS
1-34
DC SERIES BOILERS / WATER HEATERS DC 15-95, DC 15-96, DC 20-125, DC 33-160
EXTERNAL PROBE TYPE LOW WATER CUT OFF DEVICE
An external low water cut-off device is never required if the boiler / water heater
is only being used as a direct domestic hot water unit.
If an external low water cut-off device is required, an electronic probe style device
is recommended.
• The probe type low water cut-off device must be installed in the boiler / water
heater supply water piping, with a tee connection, at a level above the top of
the boiler / water heater.
• The probe type low water cut-off device must be wired in series with the
120Vac power supply so that when the device trips on a low water condition
the power supply to the boiler / water heater is interrupted.
Figure 34: External Probe Type Low Water Cut Off Device
Figure 34a: Alternate Probe Type Low Water Cut Off Device Location
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