STIEBEL ELTRON WPM - Charging Pump Control; Source

COMMISSIONING
Menu
34 | WPM www.stiebel-eltron.com
Menu: COMMISSIONING
 EMERGENCY OPERATION
 RESET
 HEAT PUMP
 NOTIFICATIONLIST
 SYSTEM
 FET
 WPE
 SENSOR CALIBRATION
 ACTUAL FLOW TEMPERATURE WP
 ACTUAL FLOW TEMPERATURE NHZ
 ACTUAL RETURN TEMPERATURE WP
 UPDATE
 SOURCE
 MIN SOURCE TEMPERATURE
!
Material losses
Never operate the heat pump with source temperatures
below –9 °C.
When set to OFF, the temperature at the source sensor is not
scanned.
If the actual temperature drops below the minimum source tem-
perature, the compressor is switched off and the idle time is set.
The compressor is enabled again after the idle time has expired
and the fixed hysteresis of 2 K has been exceeded.
The source pump will always be started 30seconds earlier than
the compressor, which starts when there is a heat demand for
central heating or DHW.
Note
The source pump runs on for 60 seconds after the heat
pump has been shut down.
 SOURCE MEDIUM
In this menu item you set the source medium used by the heat
pump.
 ETHYLENE GLYCOL
 WATER
 GROUNDWATER MODULE
 MAX. SOURCE EXTRACTION RATE
In this menu item, you can set the maximum output to be extract-
ed from the heat source, to prevent the heat source from being
overloaded.
 CHARGING PUMP CONTROL
With these parameters, the operating characteristics and control
of the charging pumps can be specified.
 STANDBY / HEATING / DHW / COOLING / DEFROST
Settings can be made for the charging pumps in these operating
modes.
 TYPE OF CONTROL
 MINIMUM PUMP RATE
With this parameter, you set the minimum flow rate and therefore
the pump rate. The pump rate does not fall below the value set
here.
 AVERAGE PUMP RATE
With this parameter, you set the average flow rate and therefore
the pump rate. The pump rate will not exceed the value set here.
 MAXIMUM PUMP RATE
With this parameter, you set the maximum flow rate and therefore
the pump rate. The pump rate will not exceed the value set here.
 ADJUSTABLE PUMP RATE
With this parameter, you set the flow rate and therefore the pump
rate. The pump rate will not exceed the value set here.
 SPREAD CONTROL
With this parameter, you can enable or disable spread control.
 SET VALUES
 PUMP RATE
In this menu item you can set the pump rate for the connected
pump. The pump rate is used to specify the flow rate.
Please also note the information on flow rate (see the operating
instructions for the pump and the chapter “Specification/ Data
table” in the operating and installation instructions for the heat
pump).
 SPREAD
 Here, you can set the temperature differential between the
flow and return sensors.
The heat pump keeps the temperature differential constant at the
set value by adjusting the circulation pump flow rate accordingly.
 STANDARD SETTING
 MINIMUM PUMP RATE
With this parameter, you set the minimum flow rate and therefore
the pump rate. The pump rate does not fall below the value set
here.