Operating Instructions
Table Of Contents
- Table of Contents
- How To Use This Manual
- Chapter 1—Hardware
- Chapter 2—Applications for ATEC— Base VAV
- Chapter 3—Applications for ATEC—VAV with Reheat
- Chapter Overview
- Introduction
- Application 2500: VAV Cooling Only
- Application 2501: VAV Cooling or Heating
- Application 2522: VAV with Electric Reheat or Baseboard Radiation
- Application 2523: VAV with Hot Water Reheat (only one reheat valve)
- Application 2524: VAV Series Fan Powered with One Stage of Electric Reheat
- Application 2526: VAV Parallel Fan Powered with One Stage of Electric Reheat
- Application 2473: Slave Mode
- Chapter 4—Point Database
- Chapter 5—Troubleshooting
- Glossary
- Index
Application 2521: VAV Cooling or Heating
Siemens Building Technologies, Inc. 2-17
Application Notes
1. If temperature swings in the room are excessive or there is trouble maintaining the
setpoint, the cooling loop, the heating loop, or both need to be tuned. If FLOW (Point 75)
is oscillating while FLOW STPT (Point 93 is constant, the flow loop requires tuning.
Contact your local Siemens Building Technologies representative for more information.
2. The ATEC, as shipped from the factory, keeps all associated equipment off. The
controller and its equipment are released to application control at start-up.
Wiring Diagram
The point wiring for Application 2521 is shown in Figure 2-6.
Lo
Hi
24 Vac
FLN
RTS
90
90
4
5
TEC0419R1
Figure 2-6. Application 2521 Wiring Diagram.