16 Description of function
2021/03 99E13331xx-mub-en - V07 31
16 Description of function
16.1 Circulation
By means of a circulation function, the drinking water in
the circulation line is heated to the desired nominal
temperature. The designated circulation pump is
actuated by the controller via the PWM 2 connection.
During the first commissioning of the circulation pump, you should specify the following
parameters to adapt the operation of the domestic hot water module to the current circulation
line:
• PWM value (0 ... 100 %) for the control of the circulation pump (PWM 2)
• Temperature sensors for hot and cold water (e.g. T-DHW and T-CW,
optional: temperature at the external circulation sensor)
The setting of the PWM value for the pump control is made under the menu item
Circulation →
Pump rotation speed.
All relevant values are displayed in a hydraulic scheme.
In this menu item, you can set the PWM signal (rotation
speed) of the circulation pump with the operating buttons
upwards
and
downwards
. With the setting, the flow in the
circulation line is modified, and consequently the
temperature difference between inlet and outlet.
Circulation
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