Installation and operating instructions
Fresh water station WHI freshaqua 44; Fresh water station WHI freshaqua 55
83514402
▪
1/2017-08
▪
Ext. PAW
16-36
4.2
Circulation mode
The fresh water stations WHI freshaqua 44 as well as WHI freshaqua 55 can be
subsequently equipped with a circulation kit (item no. 40900015462) for internal
retrofitting as an option.
Three possible operating modes are stored in the controller for operating the circulation
pump (see also operating instructions of controller, menu "Func" / "F02"):
•
Pulse-controlled operation (requirement dependent / demand):
The circulation pump is started by briefly opening a hot water tap point
(tapping pulse: ~2 seconds). The circulation pump then only runs for a few minutes
(can be set).
•
Time-dependent operation:
The operation of the circulation pump can be set on a week clock within a freely
definable time period. With this operating mode, the circulation is started at the beginning
of the set time period. The circulation is switched off after the set time period has
elapsed.
•
Temperature-dependent operation:
With this operating mode, the circulation is only started if the minimum temperature that
can be set on the circulation temperature sensor is not exceeded within the operating
period. The circulation is switched off after reaching the nominal temperature that can
be set or after the set time period has elapsed.
The operating modes can be combined as desired, e.g., time and temperature-
dependent operation. In doing so, the circulation is only active if the temperature
on the circulation temperature sensor has exceeded and the time window is active.
Outside the time window, the circulation pump can also be activated via a tapping mode
when the additional pulse controlled operation is activated.
NOTICE
Damage to property!
In its delivery state, the circulation is not yet active
(see operating instructions of the controller, menu "Func" / "F02"
to "OFF").
As soon as the circulation line has been installed, the operating
mode must be selected and pre-set under all circumstances.
The revolution speed of the circulation pump must be specified
via the PWM signal (factory setting: 40%).
