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Setpoint
Room setpoint
Min run time
Supply
Return
Table 23: Night setback setpoints
15 Operating mode / scheduler
The on / off switching and the operating mode economy or comfort are determined by a variety of
sources, which have different priorities. A source with a higher priority overrides all lower prioritized
sources.
•
HMI
•
BMS
•
Room unit
•
Scheduler
Note: the AHU can be started and stopped at the electric cabinet (operating display mounted
on the electric cabinet) by setting the operating mode of the HMI.
Depending on the execution of the AHU, individual control devices / lines are not displayed; room
unit and building management system are optional. Only the operating mode of the HMI and, with
the expanded customer password, the building management system setting is adjustable (for test
purposes and in case of failure).
The current mode is displayed next to each control device. The Operating mode line shows the re-
sulting operating mode, which results from the various control devices and the scheduler. The
Scheduler line shows the resulting operating mode switch of the scheduler, which results from the
scheduler setting.
V07-19.0
Night setback
Room setpoint
Min run time
Supply
Rturn
Figure 96: Night setback
Description
Room temperature setpoint for night setback 22 °C
Minimum operating time, even if the
conditions are no longer met
Supply airflow rate, supply fan speed
Return airflow rate, return fan speed
Request from HMI (Off, NightStb, Eco, Comfort, Auto)
with Auto the operating mode is determined by the BMS
Request from BMS (Off, NightStb, Eco, Comfort, Auto)
with Auto the operating mode is determined by the room unit
Request from room unit (Off, Eco, Comfort, Auto)
with Auto the operating mode is determined by the scheduler
Request from scheduler (Off, NightStb, Eco, Comfort)
with no entry (display -) the AHU is off
1/4
22.0°C
30min
5000m3/h
5000m3/h
Default
30 minutes
Nominal value, 60%
Nominal value, 60%
77/115
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