Appendix C: 30MP Multi-chiller Points/Properties
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Installation and Start-up Guide All rights reserved
41
– The total number of chiller plant stages - compressors, not including
hot gas bypass.
R: 0 to 24
- The chiller plant's total size in tons. R: _tons
Active Compressor Stages –
The number of compressor stages currently operating. R: 0 to 24
Leaving Load Water Temp –
The current leaving load water temperature sensor's
temperature.
R: __°F
Entering Load Water Temperature –
The current entering load water temperature. R: __°F
– The external analog input's setpoint scaled value. R: __°F
Leaving Load Water Temp Source –
The source of the
value.
States:
•
- No sensor value associated with this device
•
- A physical sensor is wired and connected to the appropriate input channel of
this controller
•
- A network sensor value provided to this controller
•
- The sensor value from a linked device, obtained through air or water
linkage
•
- The controller’s sensor input is manually locked to a specific value
R: N/A
Local
Network
Linkage
Locked Value
Entering Load Water Temp Source –
The source of the
value.
States:
•
- No sensor value associated with this device
•
- A physical sensor is wired and connected to the appropriate input channel of
this controller
•
- A network sensor value provided to this controller
•
- The sensor value from a linked device, obtained through air or water
linkage
•
- The controller’s sensor input is manually locked to a specific value
R: N/A
Local
Network
Linkage
Locked Value
– The control setpoint value's source.
States:
•
- No sensor value associated with this device
•
- A physical sensor is wired and connected to the appropriate input channel of
this controller
•
- A network sensor value provided to this controller
•
- The sensor value from a linked device, obtained through air or water
linkage
•
- The controller’s sensor input is manually locked to a specific value
•
- The controller uses the equipment's configuration (water/brine) and
the analog input channel's value to determine the appropriate setpoint conversion
range. (1-5 Volts = 40 to 65°F for water / 1-5 Volts = 20 to 45°F for brine)
R: N/A
Local
Network
Linkage
Locked Value
Configuration