Reference and instructions for the Mount Kelvin Cloud API
Eco mode relay
Mount Kelvin 401-D supports setting an AC unit to eco-mode when the room is unoccupied. This is achieved by programming the AC fan coil unit control system to receive an input signal from a relay, the behavior of the unit should be set as follows:
- Relay is closed: On closing, the AC unit is set to 21C and medium fan speed, customers can use the thermostat to set the temperature to their preferred temperature.
- Relay is open: Cooling is set to off and fan speed is set to a low setting, user cannot control temperature or fan speed from the thermostat.
Eco mode wiring instructions
- The relay is potential free, and voltage input can be connected to AC control unit voltage output (Circuit A).
- Alternatively, if the AC control unit control input can accept 230V AC, the relay can be used to provide a 230V output signal (Circuit B)
Eco-mode BACnet IP extension module
In order to set the HVAC units to eco-mode, when the guest room is unoccupied, the HVAC unit needs to be integrated into Mount Kelvin via the BACnet IP extension module.
- It needs to be in the same subnet as the BACnet IP gateway
- It needs access to the internet over MQTT
Required configuration parameters and examples
BACnet IP gateway IP address: 10.0.1.12
For each room, a BACnet address where the occupancy datum (boolean) will be written: