7
operation
Integrated Basin Heater Control Circuit Option
The Marley ABHi basin heater package controls the ON and OFF operation
of the basin heater device providing freeze protection in the cold-water col-
lection basin of the fluid cooler. The stand-alone control package includes a
main circuit breaker disconnect that feeds a contactor providing power for
the heater element.
An RTD (resistant temperature device) monitors water temperature in the
basin for the temperature controller and includes a low water cutout circuit
preventing the control from energizing if the sensor is not submerged in water.
Standard sensor lead length is 30'-0; longer leads are available.
The solid-state control card is located inside the control panel. A power
contactor inside the control panel is used to energize the heating element.
The temperature card and basin heater element maintain water temperature
in the basin between 40°F and 45°F.
Refer to Marley
“ABHi Basin Heater Integrated Controller”
User Manual
Z1079659 for additional information.
Basin Heater Card
RTD Sensor Probe
with 30 foot lead
