The Chiller Maintenance Switch option generates network inputs used to remove a chiller from service.
The Maintenance Switch (BI): option generates a binary input used to remove a chiller from service.
Be sure to review the installation Setup, Output Delay, and Lost Status parameters to make sure they are suitable for a particular installation. For example, the Output Delay should represent the amount of time after commanding a device that if that device does not give matching status, there may be a mechanical problem.
Both the maintenance switch and the lockout switch inputs indicate the device is offline and unavailable for sequencing. When the application detects the Maintenance switch is set to Disable, the chiller is removed from rotation. When the lockout switch is set to Alarm, the pump or cooling tower is removed from rotation. In the selection tree, you can choose hardware or network lockout and maintenance switches.
In the selection tree, a maintenance switch option is available for chillers. Pumps, towers, and heat exchangers have a lockout switch option.