16 Description of function
2021/03 99E13331xx-mub-en - V07 33
Operation mode "on demand mode"
Is a tap open for a few seconds (max 5 s) and closed, the flow rate sensor detects this tap
impulse. If the
on demand
mode
is activated, this tap impulse initiates the switch-on of the
circulation pump for the determined runtime. After the end of the runtime, the circulation pump is
locked for a defined break duration. During the runtime as well as during the break, no new
demand is accepted.
Setting changes made during a circulation in process will not be applied until after the
circulation process has ended (break duration included).
Connecting the operation modes
You can connect the 3 circulation operation modes with each other in order to adapt the
circulation to your needs. The following combinations are possible:
• Time control + temperature control: The temperature control is only active during the
determined time windows. The circulation pump is switched on and off by the conditions
of the temperature control.
• Temperature control + on demand mode: The circulation is switched on on demand (tap
impulse). The circulation is switched off when the switch-off threshold temperature is
exceeded or after the end of the runtime. After that, the demand for a determinable
break is locked.
• Time control + on demand mode: During the time windows, the circulation runs
continuously. Outside the time windows, the circulation starts on demand and stops
after the end of the runtime. After that, the demand for a determinable break is locked.
• Time control + temperature control + on demand mode: The temperature control is only
active during the determined time windows. Outside the time windows on demand.
When the desired temperature is reached, the demand ends ahead of time. If it is
reached, the function is still locked by the demand for the determined break and can
only be activated if the break has ended.
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