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
Chapter 3—Applications for ATEC—VAV with Reheat
3-24 Siemens Building Technologies, Inc.
Application 2522: VAV with Electric Reheat or
Baseboard Radiation
Overview
In Application 2522, the controller modulates the supply air damper of the terminal box for
cooling and controls stages of electric reheat or baseboard radiation for heating. When in
heating, the terminal box either maintains minimum airflow or modulates the supply air
damper. In order for the terminal box to work properly, the central air-handling unit must
provide supply air. See Figure 3-7 through Figure 3-10.
9
0
9
0
4
5
HI/LO Tubing
Connections
ATEC
24VAC
FLN
RTS
TEC2522CDR2
SUPPLY
AIR
3 TO 5 STRAIGHT DUCT
DIAMETERS REQUIRED
FOR PROPER SENSOR READING
AIR
VELOCITY
SENSOR
SUPPLY AIR
DAMPER
1 OR 2
STAGE
ELECTRIC
REHEAT
Stage 1 Heat
Stage 2 Heat or
Autozero Module (Opt.)
Wall Switch (Opt.)
DO3
DO4
AI3
AI4
NO
SAFETIES
BY
OTHERS
Spare AI/DI
Figure 3-7. Application 2522 Control Drawing for Electric Reheat.