Controls
RTAF-SVX001A-EN
37
Home screen: Chiller status information
The home screen (
Table 19
) provides the most frequently
needed chiller status information on “touch targets” (the
entire white rectangular areas) for each chiller component.
Touching any touch target displays a screen containing
more chiller status information related to each
component.
Viewing Chiller Operating Modes
On the Reports screen, touch Chiller Operating Modes to
view the current operating status of the chiller in terms of
the top-level operating mode and submodes.
Note:
You can also access the Chiller Operating Modes
screen from the chiller status button in the upper
left corner of the screen.
Figure 19.
Main screen
Table 17.
Main screen items
Description Resolution
Units
Active Chilled Water Setpoint
X.X
°
F /
°
C
Active Current Limit Setpoint
X.X
%RLA
Average Motor Current %RLA
X.X
%RLA
Evap Entering/Leaving Water Temp
X.X
°
F /
°
C
Cond Entering/Leaving Water Temp
X.X
°
F /
°
C
Frequency Command
X.X
Hz
Evaporator Water Flow Status
X.X
Condenser Water Flow Status
Figure 20.
Chiller operating modes
Table 18.
Operating modes
Chiller Modes
Description
MP Resetting
The main processor is going through reset
No chiller sub-modes.
Stopped
The chiller is not running either circuit and cannot run without intervention. Further
information is provided by the sub-mode:
Local Stop
Chiller is stopped by TD7 Stop button command– cannot be remotely overridden.
Immediate Stop
Chiller is stopped by the TD7 Panic Stop (by pressing Stop then Immediate Stop in succession) – previous
shutdown was manually commanded to shutdown immediately.
No Circuits Available
The entire chiller is stopped by circuit diagnostics or lockouts that may automatically clear.
Diagnostic Shutdown – Manual Reset The chiller has been shut down on a latching diagnostic that requires manual intervention to reset.
Chilled Water Control
Chiller is running to provide a chilled water temperature per the active chilled water setpoint (may be as
arbitrated from various sources). (For cooling only units, this mode may be suppressed.)
Starting is Inhibited by Low Ambient
Temperature
The chiller is inhibited based on the outdoor air temperature.