Plant diagram
Figure: Example for 4-pipe system VAV applications with a 6-port valve
Key:
DXR2… | Automation station |
| R1 | Room operator unit |
YHC | 6-port valve |
| D1 | Presence |
|
|
| D2 | Window contact |
Sequences
|
| ||||
Y | Control signal/rotational angle |
| X | Valve opening | |
Y2C | Cooling open |
| X2C | Cooling valve open | |
Y1C | Cooling begins |
| X1C | Cooling valve closed | |
Y1H | Heating begins |
| X1H | Heating valve closed | |
Y2H | Heating open |
| X2H | Heating valve open | |
Figure: Modulating heating and cooling sequence with 6-port valve positions
Parameter settings
Description | Name | Default value |
|---|---|---|
Cooling coil valve position for value X1C | X1CclVlvPos | 0 [%] |
Cooling coil valve position for value Y1C | Y1CclVlvPos | 50 [%] |
Cooling coil valve position for value X2C | X2CclVlvPos | 100 [%] |
Cooling coil valve position for value Y2C | Y2CclVlvPos | 0 [%] |
Heating coil valve position for value X1H | X1HclVlvPos | 0 [%] |
Heating coil valve position for value Y1H | Y1HclVlvPos | 50 [%] |
Heating coil valve position for value X2H | X2HclVlvPos | 100 [%] |
Heating coil valve position for value Y2H | Y2HclVlvPos | 100 [%] |