Hygiene Functions And Special Functions; Temperature Monitoring; Special Functions; Emergency Power Operation - DP -control III Installation & Operating Manual

8.7 Hygiene functions and special functions

8.7.1 Temperature monitoring

Temperature
monitoring

8.8 Special functions

8.8.1 Emergency power operation

Emergency power
operation

8.8.2 Fire alarm

Fire alarm

8.8.3 External On/Off mode

External On/Off
mode

8.9 Tank filling function

8.9.1 Tank control

Tank control
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8.9.2 Tank monitoring

Tank monitoring
When Temperature Monitoring is Enabled (parameter 2-5-3-2-1), the temperature is
measured by a thermometer. The temperature measurement input has to be configured for
this purpose (parameter 1-3-5). The Response to the temperature exceeding the Maximum
Temperature (parameter 2-5-3-2-2) or falling below the Minimum Temperature (parameter
2-5-3-2-3) can be selected as only a Message or, in addition, Flushing of the pressure
booster system (parameter 2-5-3-2-4).
When a digital input has been assigned to emergency power operation, this function is
enabled. When the input signal level is high, the system load is limited to the Maximum
System Load (parameter 2-5-4-2). Stop Delay Enabled/Disabled (parameter 2-5-4-3) serves
to select whether pumps running above maximum load are to be stopped immediately or
stopped one after the other after a stop delay as is the standard procedure.
The Fire Alarm mode starts up all pump sets at full speed, regardless of the pressure control
system. This function has be activated (parameter 1-1-6-1). The Fire Alarm mode must be
assigned a digital input (one of parameters 1-3-3-1 to 1-3-3-18).
The External On/Off mode can be used to stop all pumps or to activate the pressure control
system. This function has to be Enabled (parameter 1-1-7-1). The External On/Off mode
must be assigned a digital input (one of parameters 1-3-3-1 to 1-3-3-18).
For pressure booster systems with an inlet tank, filling of this tank can be controlled by the
control unit. To do so, Drinking Water Filling must be activated (parameter 2-7-1-1-1). For
filling the tank the Inlet Valve Type has to be selected (parameter 2-7-1-3-1). When Tank
filling on/off valve is selected, no further settings are required. For the selection of Tank
filling proportional valve the Minimum Opening Angle of Valve (parameter 2-7-1-3-2) and
Step Width for Valve Actuation (parameter 2-7-1-3-3) also have to be configured. Additional
Tank Filling (parameter 2-7-1-4-1) can be configured with separate settings. 2-7-1-4-2,
2-7-1-4-3 and 2-7-1-4-4 have to be configured accordingly.
For measuring the tank fill level and setting several tank fill levels in percent, the Absolute
Height at 0 % (parameter 2-7-1-2-4) and Absolute Height at 100 % (parameter 2-7-1-2-5)
have to be configured as well as the Position of Sensor above Tank Bottom (parameter
2-7-1-2-6). This serves to set the measured tank fill level with reference to the tank bottom.
Different fill levels can be configured for different actions and for triggering messages at
specific tank fill levels. With Low-water Level (parameter 2-7-1-2-7) and Low-water Reset
Level (parameter 2-7-1-2-8) the dry running protection can be configured. A hysteresis can
be set between the fill levels for triggering and resetting. As a warning for a possible
upcoming lack of water, Critical Water Level (parameter 2-7-1-2-9) and Level for Reset