Building Managers – everyday you are faced with having to provide quick answers to complex maintenance issues. A free publication I am Your Optimisation Guide – by the Office of Environment and Heritage in NSW Government – I am Your Optimisation Guide – is written for you.
This handbook is designed to raise awareness to factors that impact on energy use in HVAC systems and lists 20 opportunities your organisation can commence implementing in the building management system (BMS). Viscon contributed to this vital resource.
Search and you will find; sit around hoping, and you will be disappointed. Active searching for opportunities and quick-wins is the best way to achieve continuous improvement. Some of our favorite measures include:
1. Turn Off Equipment When Not Needed
Due to poor sequences, poor optimum start/stop control, undersized systems, or general disregard for energy, equipment scheduling is set to 24/7.
2. Deferred Maintenance: Air Terminal Units
This not only saves energy but reduces the cold/hot complaints and improves thermal comfort for occupants. Common issues we find include:
- Inoperative damper actuators
- Defective controllers
- Temperature sensors ready incorrectly and setpoints incorrect
- Incorrect static pressure setpoint
- Deficient air balance
- Reheat control valves stuck in position, leaking by or driving backwards
It’s not unusual to find 50% of terminal units with at least one of these issues.