Application

3
Siemens Industry, Inc.
Application Note, App 6663
140-1109
2014-10-27
Table of Contents
Overview ............................................................................................................................. 4
BACnet .............................................................................................................................. 5
Hardware Inputs .................................................................................................................. 5
Room Unit Identification ....................................................................................... 6
Hardware Outputs ................................................................................................................ 6
Ordering Notes .................................................................................................................... 6
Sequence of Operation ..................................................................................................... 7
Control Temperature Setpoints ........................................................................................... 7
CTL STPT Using Standard/Absolute Mode (Digital Room Unit, Revision 26
and later) .............................................................................................. 8
CTL STPT Using Warmer/Cooler Mode (Digital Room Unit, Revision 26
and later) .............................................................................................. 8
CTL STPT Using Standard/Absolute Mode (Analog or Digital Room Unit) ......... 9
CTL STPT Using Warmer/Cooler Mode (Analog Room Unit Only) ..................... 9
Heating/Cooling Switchover............................................................................................... 10
Occupied and Unoccupied Modes ..................................................................................... 10
Unoccupied Mode Override Switch ................................................................................... 10
Control Loops .................................................................................................................... 10
Hot Water Reheat .............................................................................................................. 11
Calibration .......................................................................................................................... 11
Room Unit Operation ......................................................................................................... 12
Sensor Select ..................................................................................................... 12
Room CO2.......................................................................................................... 13
Room RH ............................................................................................................ 13
Room DEW POINT ............................................................................................ 13
Auto Discovery ................................................................................................................... 13
Auto Addressing ................................................................................................................ 13
PPCL STATUS .................................................................................................................. 13
Fail Mode Operation .......................................................................................................... 13
Application Notes ............................................................................................................... 14
Wiring Diagrams ................................................................................................................ 14
Application 6663 Point Database ................................................................................... 17