Johnson Controls Applications Engineer Interview Questions, Process, and Tips for Experienced

HVAC and BMS are essential for controlling heating, ventilation, and air conditioning systems in buildings.

• HVAC stands for heating, ventilation, and air conditioning, and is responsible for controlling the temperature, humidity, and air quality in a building.

• BMS stands for Building Management System, which is a computer-based control system that manages and monitors the building's mechanical and electrical equipment.

• In...read more

The number of systems that can be connected in a BACnet MSTP protocol network depends on factors like network speed, device types, and network topology.

• The maximum number of devices that can be connected in a BACnet MSTP network is typically limited to 127 devices.

• The actual number of systems that can be connected may vary based on the network speed and the types of devices being used.

• Factors like network topology, cab...read more

Safety interlock for AHU ensures safe operation by preventing access during operation.

• Safety interlock can be implemented using door switches to prevent access when AHU is running

• Emergency stop buttons can be installed to immediately shut down AHU in case of emergency

• Interlocks can be connected to the control system to automatically stop AHU if safety conditions are not met