Surge protection screen (single-compressor operation)
Figure 19: Surge protection screen (single-compressor operation)
This screen displays the single-compressor surge protection parameters. The setpoints applicable
to this feature are maintained here. An LED illuminates when a surge event is detected during
single-compressor operation.
Note:
This screen and all parameters displayed here apply to single-compressor operation
only.
Table 42: Display only fields
Field/LED name
Description
Delta P/P
Displays the parameter that represents the system differential or “Head pressure”. It
is calculated as (condenser pressure – evaporator pressure) / evaporator pressure.
Surge window time
When the chiller enters run mode, this value counts up to the time programmed as
the COUNT WINDOW setpoint. When it reaches the COUNT WINDOW minutes, the
number of surge events in the oldest minute is discarded and the number of surge
events in the most recent minute is added, thus providing a rolling count of the total
surge events that have occurred in the last COUNT WINDOW minutes. This value is
reset when the chiller shuts down.
Surge window count
Displays the number of surge events that have occurred in the last 1 to 5 minutes as
programmed with the COUNT WINDOW setpoint. If the chiller has been running for
less than the COUNT WINDOW minutes, it is the number of surge events that have
occurred within the last number of minutes displayed as the SURGE WINDOW TIME.
The count is cleared when the chiller shuts down.
Total surge count
Displays the total number of surge events detected over the lifetime of the unit (up to
a maximum of 65535).
Surge detected (LED)
Lights for 5 seconds each time a surge is detected.
Extended run time remaining
Displays the time remaining in the 10-minute “EXTENDED RUN” period. During this
period, the Pre-rotation vanes are driven closed and “Warning – Surge Protection –
Excess Surge Limit” is displayed. Refer to operation under
.
57
Model YD Mod D with OptiView Control Center
Summary of Contents for YD Mod D
Page 2: ...2 Model YD Mod D with OptiView Control Center...
Page 8: ...Nomenclature Model YD Mod D with OptiView Control Center 8...
Page 17: ...Figure 2 Chiller operation flow chart 17 Model YD Mod D with OptiView Control Center...
Page 18: ...Figure 2 Chiller operation flow chart Model YD Mod D with OptiView Control Center 18...
Page 19: ...Figure 2 Chiller operation flow chart 19 Model YD Mod D with OptiView Control Center...
Page 20: ...Figure 2 Chiller operation flow chart Model YD Mod D with OptiView Control Center 20...
Page 21: ...Figure 2 Chiller operation flow chart 21 Model YD Mod D with OptiView Control Center...
Page 22: ...Figure 2 Chiller operation flow chart Model YD Mod D with OptiView Control Center 22...
Page 150: ...Figure 57 Sample printout status Model YD Mod D with OptiView Control Center 150...
Page 151: ...Figure 57 Sample printout status 151 Model YD Mod D with OptiView Control Center...
Page 152: ...Figure 58 Sample printout setpoints Model YD Mod D with OptiView Control Center 152...
Page 153: ...Figure 58 Sample printout setpoints 153 Model YD Mod D with OptiView Control Center...
Page 154: ...Figure 59 Sample printout schedule Model YD Mod D with OptiView Control Center 154...
Page 155: ...Figure 60 Sample printout sales order 155 Model YD Mod D with OptiView Control Center...
Page 156: ...Figure 61 Sample printout history Model YD Mod D with OptiView Control Center 156...
Page 157: ...Figure 61 Sample printout history 157 Model YD Mod D with OptiView Control Center...
Page 159: ...Figure 64 Sample printout custom screen report 159 Model YD Mod D with OptiView Control Center...