Temperature control works with the actual room temperature setpoints for the actual operating mode and calculates a set volume flow that moves between the minimum and maximum setpoints.
The minimum and maximum air volume flows for a VAV actuator can be configured for each actuator.
Sequence with
modulating heating valve
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Y | Output signal |
| TR | Room temperature |
SpH | Effective heating setpoint |
| SpC | Effective cooling setpoint |
YH | Heating valve |
| YC | Cooling valve |
VavSuAirFlMaxH | Maximum air volume flow heating |
| VavSuAirFlMaxC | Maximum air volume flow cooling |
VavSuAirFlMinH | Minimum air volume flow heating |
| VavSuAirFlMinC | Minimum air volume flow cooling |
| VAV volume flow |
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|
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Figure: Serial control sequence for a VAV application with modulating heating valve
Sequence with a
2-staged heating valve
|
| |||
Y | Output signal |
| TR | Room temperature |
| VAV volume flow |
| SpH | Effective heating setpoint |
YH1 | 1-stage electric heating coils |
| YH2 | 2-stage electric heating coils |
VavSuAirFlMaxH | Maximum air volume flow heating |
| VavSuAirFlMinH | Minimum air volume flow heating |
Figure: Serial control sequence for a VAV application with 2-stage heating valve