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6
Figure 8. Basin Heater
NOTICE: The basin heater is not
designed to prevent icing during
unit operation.
NOTICE: The heater control panel
temperature/low level control can
only be used with the supplied
combination temperature/water
level sensor probe. Please contact
your local BAC Representative for
replacement parts.
32
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HXV HYBRID COOLER
Operation Considerations
for Accessories
Basin Heater (Optional)
One or more electric immersion heaters, properly sized, will prevent the cold water basin
from freezing and damaging the unit during shutdown or standby. The heaters are sized to
maintain 40 degrees Fahrenheit basin water temperature for the specific unit at specified
ambient conditions. The heating element has an enclosure that is suitable for outdoor use.
At least quarterly and prior to the risk of freezing ambient conditions, inspect the basin
heater and controls for proper function.
Operation
Ensure that the heating element is completely submerged before energizing the basin
heater(s). De-energize, lockout, and tag out power to the basin heater(s) prior to draining
the cold water basin. The heater circuit must never be energized when the water level in
the cold water basin is not sufficient to completely submerge the heating element. For
installations that have a BAC Controls Enclosure, please consult the submittal packet
provided with the unit and contact BAC for support.
Stand Alone BAC Heater Control Panel (Optional)
The heater control system consists of a heater control panel and a combination temperature/
water level sensor. The stainless steel sensor probe with 1/2" NPT mounting fitting has an on/off
relay output that de-energizes the heaters whenever the basin water temperature is above 45°F
(7.2°C), or whenever the sensor probe is not fully submersed. The control panel enclosure is
suitable for outdoor use.
The control system utilizes a combination temperature/low water level control sensor, which
is powered by a transformer in the control panel. When the sensor provides a signal to the
control panel, the panel sends a control voltage to the magnetic contactors. When energized,
the magnetic contactors supply line voltage to the heaters. Annually inspect the heater control
system prior to the risk of reaching freezing operating conditions.
Operation
Ensure that the element is completely submerged before energizing the main disconnect.The
combination temperature/low level control is preset to energize the heater at 40°F (4.5°C), but
will not energize if the water level is too low or if the water temperature is above 45°F (7.2°C).
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