44
CTV-SVU01G-EN
Table 10. Setpoint source choices and corresponding arbitration (continued)
Priority
BAS/Ext/FP Ext/FP
Front Panel
Third
If no BAS nor external setpoint is
available (for example, BAS
communication has never been
established), a setpoint from the front
panel is used.
None None
Notes:
1. For service or troubleshooting, it may be helpful to set the setpoint source to front panel to isolate the chiller from other control sources.
2. If BAS communication was established and then lost, in most instances the BAS values remain and can be used by the chiller controller.
Changing the Setpoint Source
There are three ways to access the Setpoint Source screen. To change the setpoint source, follow
one of these procedures:
Using the Setpoint Source Button in the Chiller Status Area
1. Touch the SSeettppooiinntt SSoouurrccee button in the chiller status area (refer to “Screen Overview,” p.
8).
The Setpoint Source screen appears as shown in the following figure.
2. Touch the appropriate source button on the Setpoint Source screen.
3. Touch SSaavvee to complete the change.
NNoottee:: The change applies to all arbitrated setpoints.
Figure 25. Setpoint Source screen
From the Setpoint Source Button on the Chiller Settings Screen
1. Touch the SSeettttiinnggss button in the main menu area (refer to “Screen Overview,” p. 8). The
Settings screen appears.
EEqquuiippmmeenntt SSeettttiinnggss
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