The following table describes the attributes used by the Chiller Forced Upstage modules:
|
Name |
Type 1 |
Description |
Default Value |
|---|---|---|---|
|
Delay |
This input is the value, in minutes, sent to the On Delay. |
20.0 minutes |
|
|
Derate Now |
G |
This output is the result of the two comparisons, and is then connected to the Derate Now input on the Chiller Selector. |
False |
|
Flow |
This input is compared to the Max Flow. This input is typically connected to the CHW Supply Flow. |
0.0 gpm, 0.0 L/s |
|
|
Flow Differential |
This input defines the amount the CHW flow must rise above setpoint to trigger the upstage. |
30.0 gpm, 114.0 L/s |
|
|
Max Flow |
This input is compared to the Flow input. This value may be a user-defined value or come from another module that calculates the Max Flow based on the number of devices running. |
0.0 gpm, 0.0 L/s |
|
|
Reset |
Issues a reset command to the derate reset input on the Chiller Selector. |
False |
|
|
Temp |
This input is compared to the Temp Setpt. This input is typically connected to the CHW Supply Temperature. |
0 °C, 0 °F |
|
|
Temp Differential |
This input defines the amount the CHW supply temperature must rise above setpoint to trigger the upstage. |
1.7 °C, 3 °F |
|
|
Temp Setpt |
A constant is added to this input and then compared to the Temp input. This input is typically connected to the CHW Supply Temperature Setpoint. |
0 °C, 0 °F |