In the load shedding settings, you can select the device that can initiate the load shedding feature. With the load shedding feature, you can decrease the HVAC consumption in a building with a single physical input. You can use this feature in correlation with demand response pricing incentives provided by a local utility. This functionality requires either an LC-IOM100-0 or LC-VAC1002-0 on the system bus. To configure load shedding, complete the following steps:
- Navigate to the Settings tab.
- Click Load Shedding.
- Under the Select Device tab, select the device you want to enable for load shedding.
- Click Save.
Not all Verasys devices support load shedding. On the devices that do support load shedding, use the Control Setup menu to configure how far to spread the control band during a load shedding event. You can also adjust how quickly the setpoints change.
For example, if you set the Load Shed Rate Limit to 0.066 °F/min and the Load Shed Adjust to 4°F, and the normal occupied setpoints are 72°F for cooling and 68°F for heating, the setpoints temporarily change to 76°F and 64°F during a load shedding period. The BI-2 has a closed contact on the LC-VAC1002-0 that triggers this. After it opens, the setpoints ramp back at the same rate.