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11.5.3 "Constant temperature"
Pump variant
NBE, NBSE, NKE, TPE, TPED
NBE, NBSE, NKE, TPE, TPED
Series 2000
This control mode ensures a constant temperature. Constant
temperature is a comfort control mode that you can use in
domestic hot-water systems to control the flow to maintain a
constant temperature in the system. See fig. 29.
H
Fig. 29 "Constant temperature"
This control mode requires an external temperature sensor. See
the examples below.
Examples
• One external temperature sensor.
t
Fig. 30 "Constant temperature"
Controller settings
For recommended controller settings, see section
11.14 "Controller" ("Controller
settings").
11.5.4 "Constant differential pressure"
Pump variant
NBE, NBSE, NKE, TPE, TPED
NBE, NBSE, NKE, TPE, TPED
Series 2000
The pump maintains a constant differential pressure,
independently of the flow in the system. See fig. 31. This control
mode is primarily suitable for systems with relatively small
pressure losses.
H
Fig. 31 "Constant differential pressure"
26
"Constant temperature"
●
●
t
Q
t
"Constant differential
pressure"
●
●
Q
This control mode requires either an internal or external
differential-pressure sensor or two external pressure sensors.
See the examples below.
Examples
• Factory-fitted differential-pressure sensor, only NBE, NBSE,
NKE, TPE, TPED Series 2000.
p
• One external differential-pressure sensor.
The pump uses the input from the sensor to control the
differential pressure. You can set the sensor manually or by
using the Assist menu. See section
setup
.
p
• Two external pressure sensors.
Constant differential-pressure control is achievable with two
pressure sensors. The pump uses the inputs from the two
sensors and calculates the differential pressure. The sensors
must have the same unit and must be set as feedback
sensors. You can set the sensors manually, sensor by sensor,
or by using the Assist menu. See section
pump setup
.
p
p
p
Fig. 32 "Constant differential pressure"
Controller settings
For recommended controller settings, see section
11.14 "Controller" ("Controller
settings").
Assisted pump
11.41
p
Assisted
11.41
p
p
p
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