Grundfos TPE Series - Page 30

English (GB)
30
13.5.5 "Constant differential temperature"
The pump maintains a constant differential
temperature in the system and the pump
performance is controlled according to this. See fig.
32.
Fig. 32 "Constant differential temperature"
This control mode requires either two external
temperature sensors or one external
differential-temperature sensor. See the examples
below.
Fig. 33 "Constant differential temperature"
Controller settings
For recommended controller settings, see section
13.14 "Controller" ("Controller settings").
13.5.6 "Constant flow rate"
The pump maintains a constant flow in the system,
independently of the head. See fig. 34.
Fig. 34 "Constant flow rate"
This control mode requires an external flow sensor.
See the example below.
Fig. 35 "Constant flow rate"
Controller settings
For recommended controller settings, see section
13.14 "Controller" ("Controller settings").
Pump variant
"Constant differential
temperature"
TPE, TPED, NBE,
NBGE, NKE, NKGE
●
TPE, TPED, NBE, NKE
Series 2000
●
TM05 7954 1713
Examples
• Two external temperature sensors.
• One external differential-temperature sensor.
H
Q
△t
t
t
t
t
Pump variant "Constant flow rate"
TPE, TPED, NBE,
NBGE, NKE, NKGE
●
TPE, TPED, NBE, NKE
Series 2000
●
TM05 7955 1713
Example
• One external flow sensor.
H
Q
Q
set
Qset
Q