Install Instructions

15
English (US)
11. Description of selected functions
11.1 Setpoint
The setpoint for all control modes can be set in this submenu
when the desired control mode has been selected. See section
11.4 Control mode.
11.2 Operating mode
Possible operating modes:
• Normal
The pump runs according to the selected control mode.
• Stop
The pump stops.
• Min.
The min. curve mode can be used in periods in which a
minimum flow is required.
• Max.
The max. curve mode can be used in periods in which a
maximum flow is required.
This operating mode is for instance suitable for systems with
hot-water priority.
• Manual
The pump is operating at a manually set speed.
See section 11.3
Set manual speed .
The pump can be set to operate according to the max. or min.
curve, like an uncontrolled pump. See fig. 20.
Fig. 20 Max. and min. curves
11.3 Set manual speed
The pump speed can be set in %. When the operating mode has
been set to "Manual", the pump will run at the set speed.
11.4 Control mode
Possible control modes:
• Const. pressure (constant pressure)
• Const. temp. (constant temperature)
• Con. diff. press. (constant differential pressure)
• Con. diff. temp. (constant differential temperature)
• Const. flow rate (constant flow rate)
• Const. level (constant level)
• Const. other val. (constant other value)
• Const. curve (constant curve).
The setpoint for all control modes
can be changed in the
"Setpoint" submenu under "Settings" when the desired control
mode has been selected.
11.4.1 Constant pressure
The pump maintains a constant discharge pressure,
independently of the flow rate. See fig. 21.
Fig. 21 Constant pressure
This control mode requires an external differential-pressure
sensor as shown in the examples below:
Fig. 22 Constant pressure
TM00 5547 0995
Q
H
Max.
Min.
Note
Note
The operating mode must be set to " Normal "
before a control mode can be enabled.
TM05 7901 1613
Examples
• One external differential-pressure sensor.
H
Q
p
p