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Siemens Standard application AHU CE1P3977en_02
Building Technologies Content 01.02.2010
Content
1 About this document ..............................................................................7
1.1 Revision history.........................................................................................7
1.2 Referenced documents.............................................................................7
1.3 Before you start.........................................................................................7
2 Philosophy of air handling units ...........................................................9
2.1 Overview ...................................................................................................9
2.2 Properties..................................................................................................9
2.3 Safety......................................................................................................10
2.4 Packing, transport and storage...............................................................11
2.5 Maintenance and service ........................................................................11
2.6 Environmental protection and waste management.................................11
2.7 Abbreviations ..........................................................................................11
3 Function overview ................................................................................12
3.1 General ...................................................................................................12
3.2 Diagram standard AHU ...........................................................................13
3.3 Workflow diagram ...................................................................................14
4 Hardware overview ...............................................................................15
4.1 Basic controller (POL638x).....................................................................15
4.2 Extension module (POL955)...................................................................18
4.3 Inbuild HMI..............................................................................................20
4.4 External HMI (DM) ..................................................................................20
4.5 Room unit................................................................................................25
5 Functions...............................................................................................33
5.1 Global functions ......................................................................................33
5.2 Operating mode ......................................................................................35
5.3 Damper control........................................................................................46
5.4 Fan control ..............................................................................................50
5.5 Temperature control ................................................................................59
5.6 Heat recovery damper ............................................................................67
5.7 Heat recovery (Plate, wheel, water)........................................................69
5.8 Heating / Heating 2 .................................................................................73
5.9 Electrical heating / Electrical heating 2...................................................77
5.10 Cooling / Cooling 2..................................................................................79
5.11 Humidity control ......................................................................................83
5.12 Air quality control.....................................................................................90
5.13 Auxiliary functions ...................................................................................91
5.14 Alarm handling (Alarm outputs) ..............................................................93
6 Detail pages: Inputs and outputs.........................................................95
6.1 General ...................................................................................................95
6.2 Analog outputs ........................................................................................95
6.3 Digital outputs .........................................................................................98
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
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