110-275
22
Auto-Refrigeration Temperature (AF)
NOTE:
This value is always displayed/set in °C.
This menu item allows you to select the temperature at which refrigeration is activated. When the set point
exceeds the auto-refrigeration temperature by more than 1.0°C, the cooling and the fan are turned off.
To change the auto-refrigeration temperature, rotate the Select/Set Knob until the desired value is displayed.
AF
35
Compressor Band (Cb)
T
his menu item allows you to set a temperature below set point at which the compressor will turn off. This protects
the fluid temperature from dropping too low during periods of low or no heat load. The compressor will turn back
on when the fluid temperature rises above set point.
Cb
-06
Calibration Offset (
o
1)
IMPORTANT:
To prevent the operator from accidentally changing the calibration offset, a special keystroke
sequence is required to access this function.
This menu item allows you to adjust the Chiller’s temperature reading to match that of a traceable standard. It
allows you to offset the displayed temperature value by as much as ±1.9°C.
NOTE:
Calibration offset values are always set and displayed in °C.
1. Press and hold the Units/Menu Button until HL appears on the display.
2. Press and release the Units/Menu Button until AP appears on the display.
3. Press and hold the Units/Menu Button.
4. While holding the Units/Menu Button, press and release the Select/Set Knob.
5. When CAL appears on the Temperature Readout, release the Units/Menu Button. The current
calibration offset value will appear on the Temperature Readout and alternate with the fluid temperature
reading (allowing you to simultaneously adjust the offset and see the effect on the temperature reading).
6. Rotate the Select/Set Knob until the desired calibration offset is displayed. Press the Select/Set Knob or
simply allow the display to time out to accept the displayed value.
°
C
0.0
Fc
0.0
Summary of Contents for DCA203C4
Page 1: ...Operator s Manual DuraChill Air and Water Cooled 2 and 3 HP Chillers 110 275 25 February 2015...
Page 9: ...110 275 8 Rear View Power Switch Power Switch...
Page 36: ...110 275 35 Pump Performance Specifications subject to change without notice...
Page 40: ...110 275 39 Appendix Flow Diagram Air Cooled Chillers...
Page 41: ...110 275 40 Flow Diagram Water Cooled Chillers...
Page 42: ...110 275 41 Wiring Diagram 208 230V 1 Phase Air Cooled Chillers...
Page 43: ...110 275 42 Wiring Diagram 208 230V 380 460V 3 Phase Air and Water Cooled Chillers...
