STIEBEL ELTRON SOM 10 - Manual (Page 54)

en
54
Circulation
The circulation function can be used for controlling a
circulation pump.
For the control logic, 5 different variants are available:
• Thermal
• Timer
• Therm. + Timer
• Demand
• Demand + Timer
If one of the variants is selected, the corresponding
adjustment channels will appear.
Thermal
The temperature at the allocated sensor is monitored.
The allocated relay switches on when the adjusted
switch-on temperature is exceeded. If the tempera-
ture falls below the switch-off temperature, the relay
switches off.
Timer
The relay is switched on during the adjusted time
frames, outside of them it switches off. For informati-
on on how to adjust the timer, see below.
Therm. + Timer
The relay operates when the switch-on conditions of
both above mentioned variants are fulfilled.
Relay
Sensor
Circulation
Demand + Timer
The relay operates when the switch-on conditions of
both above mentioned variants are fulfilled.
When the Timer, Therm. + Timer or Demand
+ Timer variant is activated, a timer is indicated in
which time frames for the function can be adjusted.
First of all, an overview of the current adjustment is
displayed. For each day of the week there is an over-
view display. The display can be switched back and
forth between the different days by pressing buttons
or 4 .
In order to adjust the timer, press button 5 .
First, the individual days of the week or all days of the
week can be selected. The last menu item after the
list of days is Continue. If Continue is selected, the
Edit timer menu opens, in which the time frames
can be adjusted.
Demand
The allocated FS08 flow switch is monitored for con-
tinuity (circuit continuity is achieved when fluid passes
through the flow switch). If circuit continuity is de-
tected at the flow switch, the relay switches on for
the adjusted runtime. After the runtime has ended, the
relay is switched off. During the adjusted break time,
the relay remains switched off even if continuity is de-
tected at the flow switch.
Note:
If the flow switch is connected to the input
S1 ... S12, continuity must be detected for at
least 5 s for the controller to an impuls input
at least 1 s.