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AB Industrietechnik srl – Via Julius Durst, 70 – 39042 BRESSANONE (BZ) Italy – Tel: +39 0472/830626 – [email protected] – www.industrietechnik.it
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Regulation of on/off damper based on free cooling/heating and CO
2
......................................................................................... 79
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Regulation of on/off damper based on dehumidification .............................................................................................................. 79
• Modulating damper:........................................................................................................................................................................... 80
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Regulation of modulating damper based on free cooling/heating ................................................................................................ 81
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Regulation of modulating damper based on CO
2
........................................................................................................................ 81
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Regulation of modulating damper based on free cooling/heating and CO
2 ...............................................................................................................................................81
24. Heat exchanger ..........................................................................................................................................83
• Conditions for recovery: .................................................................................................................................................................... 83
• Cross-flow heat exchanger:............................................................................................................................................................... 84
• Double battery heat exchanger: ........................................................................................................................................................ 86
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Operation with modulating bypass heat exchanger and modulating cooling valve: .................................................................... 86
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Operation with modulating bypass heat exchanger and on/off cooling valve: ............................................................................. 86
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Operation with modulating bypass heat exchanger without cooling valve: .................................................................................. 87
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Operation with on/off bypass heat exchanger and cooling modulating valve: ............................................................................. 88
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Operation with on/off bypass heat exchanger and on/off cooling valve: ...................................................................................... 88
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Operation with on/off bypass heat exchanger without cooling valve: .......................................................................................... 89
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Operation with modulating bypass heat exchanger and modulating heating valve: .................................................................... 89
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Operation with modulating bypass heat exchanger and on/off heating valve: ............................................................................. 90
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Operation with modulating bypass heat exchanger without heating valve: ................................................................................. 91
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Operation with on/off bypass heat exchanger and heating modulating valve: ............................................................................. 92
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Operation with on/off bypass heat exchanger and heating on/off valve: ..................................................................................... 92
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Operation with on/off bypass heat exchanger without heating valve: .......................................................................................... 93
• Rotary on/off heat exchanger: ........................................................................................................................................................... 94
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Operation with modulating bypass heat exchanger and modulating cooling valve: .................................................................... 94
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Operation with modulating bypass heat exchanger and on/off cooling valve: ............................................................................. 95
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Operation with modulating bypass heat exchanger without cooling valve: .................................................................................. 95
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Operation with on/off bypass heat exchanger and cooling modulating valve: ............................................................................. 96
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Operation with on/off bypass heat exchanger and on/off cooling valve: ...................................................................................... 97
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Operation with on/off bypass heat exchanger without cooling valve: .......................................................................................... 97
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Operation with modulating bypass heat exchanger and modulating heating valve: .................................................................... 98
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Operation with modulating bypass heat exchanger and on/off heating valve: ............................................................................. 99
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Operation with modulating bypass heat exchanger without heating valve: ................................................................................. 99
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Operation with on/off bypass heat exchanger and heating modulating valve: ........................................................................... 100
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Operation with on/off bypass heat exchanger and heating on/off valve: ................................................................................... 101
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Operation with on/off bypass heat exchanger without heating valve: ........................................................................................ 101
• Modulating rotary heat exchanger
: ............................................................................................................102
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Operation with on/off bypass heat exchanger and cooling modulating valve: ........................................................................... 102
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Operation with on/off bypass heat exchanger and cooling on/off valve: .................................................................................... 103
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Operation with on/off bypass heat exchanger without cooling valve: ........................................................................................ 104
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Operation with on/off bypass heat exchanger and heating modulating valve: ........................................................................... 104
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Operation with on/off bypass heat exchanger and heating on/off valve: ................................................................................... 105
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Operation with on/off bypass heat exchanger without heating valve: ........................................................................................ 106
25. Frost protection operation of the heat exchanger ................................................................................108
26. Frost protection operation of the heating battery .................................................................................109
27. Anti-condensation function ....................................................................................................................109
28. Timer extension or forced presence modes ..........................................................................................109
29. Dirty filter ..................................................................................................................................................110
30. Summertime changeover ........................................................................................................................110
31. AI3 sensor used as 0...10 V input ...........................................................................................................110
32. Forced outputs via Modbus .................................................................................................................... 111
33. Alarms .......................................................................................................................................................112
34. Parameter factory settings (level 1 password) ......................................................................................114
35. Configuration of installer parameters (level 2 password) ....................................................................120
36. Digital and analogue input logic .............................................................................................................126
• Digital inputs DI1 and DI2................................................................................................................................................................ 126
• Analogue inputs............................................................................................................................................................................... 128
37. Visualizzazione stato ingressi/uscite .....................................................................................................133
38. Resetting the default parameters ...........................................................................................................135
39. USB connection .......................................................................................................................................136
40. Jumper configuration ..............................................................................................................................136
41. Modbus (for AHU-xMxSx1 models) ........................................................................................................137