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EcoFlex™ Controls Features
Figure 29. EcoFlex™ Controls Panel (TSDC Shown)
Control Panel
Disconnect Switch
• Control Panel Disconnect Switch: De-energizes the entire unit and control panel as
well as unlocks the control panel door. Note, power still enters the control panel even
if the disconnect switch has been turned in the off position.
• Fan Speed Control
– Customer Signal Control: Fan speed control provided by 0 – 10V, 10 – 0V, or 4 –
20mA control signal. The fan speed control is supplied by others.
– Communication Control: Fan speed control provided by either BACnet or ModBus
over Ethernet or RS485 and requires the Communication Package be ordered. The
fan speed control is supplied by others.
– Head Pressure Control: Fan speed control provided by monitoring the inlet
refrigerant pressure and requires the Head Pressure Control Package to be ordered.
– Leaving Fluid Temperature Control (TSDF2 Only): The controller modulates the
fan speed using a PI loop comparing the outlet fluid temperature to a temperature
setpoint. An NTC temperature sensor to be mounted in the leaving fluid piping out
is included and requires installation in the field.
WARNING: Incoming power lines
to the disconnect switch remain
energized. Take proper electrical
precautions when working near
energized equipment.
Controller Display
Inside
Temperature Sensor
(Below the Panel)
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