HVAC&R designers must be intimately familiar with the concepts and details of control systems, and must be acutely aware of how their design features affect system performance, operation, and maintenance. Building owners and operators want reliable and easily maintainable control systems. This, to some fair degree, contradicts the trend toward custom controls programming and increasing controls complexity.
To meet these conflicting requirements, designers should provide a complete conceptual design for a control system. This should include:
- The control sequence of operation
- A control diagram
- Ladder diagrams showing the interactions between the various parts of the system
- A plan that allows the building and its air-conditioning system to be put into operation and commissioned
- Clear a useful operation maintenance information
There are three types of controls- pneumatic, analog electric, and direct digital control. The advantages and disadvantages of each of these three types are presented in this module. Then, the details of typical control strategies for VAV systems, single-zone, constant-volume air systems, and dual-duct systems are discussed. Finally, control sequences for various HVAC&R systems are presented.
This course allows you to earn credits towards RCEP PDH’s. Credits earned on completion of this program will be reported to RCEP.net within 30 days of completion. You will receive a certificate of completion provided by RCEP on the email address you have provided at the time of enrollment. Please keep the certificate for your record.