Applications Guide Tracer Graphical Programming - Trane
Applications Guide Tracer Graphical Programming - Trane Applications Guide Tracer Graphical Programming - Trane
® Chapter 6 VAV AHU example Summary questions Answer the following questions to review the skills, concepts, and definitions you learned in this chapter. The answers to these questions are on page 237. 1. How would you use the outdoor air enthalpy to determine whether to economize? 2. Use the calculation application in combination with a program to create a fan maintenance timer. Every 4,000 hours, turn on a binary variable to indicate that fan maintenance is required. Also, use another binary variable to reset the maintenance timer. 3. Implement a binary variable to enable the operator to switch between a space temperature setpoint source of operator display or a local, wired zone sensor with a thumbwheel setpoint adjustment knob. Be sure to apply limits to the resulting setpoint. Modify the modes and setpoints program to accommodate this new feature. 4. What modifications are necessary to the Mode and Setpoints program to allow the operator to adjust the discharge air cooling and heating setpoints? 144 CNT-APG001-EN
® Chapter 7 Constant-volume AHU example In this chapter, you will expand your programming skills. You will use what you learned in Chapters 1 through 6 to program a constant-volume air handler with space temperature control. Note: Many of the chapters in this book build on previous chapters, so be sure to complete the chapters in the order presented. See “About this book” on page 1 for additional instructions. What you will learn In this chapter, you will learn a variety of skills, concepts, and definitions. Skills You will learn how to interpret increasingly complex sequences of operation, with a focus on constant-volume air-handler applications. Concepts and definitions You will understand the following concepts and definitions: • Writing program modules to meet a sequence of operation • Reusing and modifying program modules from previous programs • Incorporating peer-to-peer binding with another Comm5 device Block You will learn how to use the following blocks: • Reset • Between CNT-APG001-EN 145
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®<br />
Chapter 6 VAV AHU example<br />
Summary questions<br />
Answer the following questions to review the skills, concepts, and definitions<br />
you learned in this chapter. The answers to these questions are on<br />
page 237.<br />
1. How would you use the outdoor air enthalpy to determine whether to<br />
economize?<br />
2. Use the calculation application in combination with a program to create<br />
a fan maintenance timer. Every 4,000 hours, turn on a binary<br />
variable to indicate that fan maintenance is required. Also, use<br />
another binary variable to reset the maintenance timer.<br />
3. Implement a binary variable to enable the operator to switch between<br />
a space temperature setpoint source of operator display or a local,<br />
wired zone sensor with a thumbwheel setpoint adjustment knob. Be<br />
sure to apply limits to the resulting setpoint. Modify the modes and<br />
setpoints program to accommodate this new feature.<br />
4. What modifications are necessary to the Mode and Setpoints program<br />
to allow the operator to adjust the discharge air cooling and heating<br />
setpoints?<br />
144 CNT-APG001-EN
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