Operating Instructions

Table of Contents
II Siemens Building Technologies, Inc.
Sequence of Operation ............................................................................................ 2-5
Automated Checkout ............................................................................................... 2-7
Application Notes ..................................................................................................... 2-7
Wiring Diagram ........................................................................................................ 2-8
Point Database......................................................................................................... 2-9
Application 2521: VAV Cooling or Heating ............................................................... 2-12
Overview ................................................................................................................ 2-12
Sequence of Operation .......................................................................................... 2-14
Automated Checkout ............................................................................................. 2-16
Application Notes ................................................................................................... 2-17
Wiring Diagram ...................................................................................................... 2-17
Point Database....................................................................................................... 2-18
Application 2486: Slave Mode .................................................................................. 2-21
Overview ................................................................................................................ 2-21
Using Auxiliary Points............................................................................................. 2-21
Using the Controller as a Point Extension Device.................................................. 2-21
Point Database....................................................................................................... 2-22
Chapter 3—Applications for ATEC—VAV with Reheat .............................................. 3-1
Chapter Overview....................................................................................................... 3-1
Introduction................................................................................................................. 3-2
Basic Operation........................................................................................................ 3-2
Control Operation..................................................................................................... 3-2
Illustrations ............................................................................................................... 3-2
Controller Points....................................................................................................... 3-2
Application 2500: VAV Cooling Only........................................................................... 3-3
Overview .................................................................................................................. 3-3
Sequence of Operation ............................................................................................ 3-5
Automated Checkout ............................................................................................... 3-8
Application Notes ..................................................................................................... 3-8
Wiring Diagram ........................................................................................................ 3-9
Point Database....................................................................................................... 3-10
Application 2501: VAV Cooling or Heating ............................................................... 3-13
Overview ................................................................................................................ 3-13
Sequence of Operation .......................................................................................... 3-15
Automated Checkout ............................................................................................. 3-19
Application Notes ................................................................................................... 3-19
Wiring Diagram ...................................................................................................... 3-20
Point Database....................................................................................................... 3-21
Application 2522: VAV with Electric Reheat or Baseboard Radiation....................... 3-24
Overview ................................................................................................................ 3-24