Control Mode - Grundfos TPE 1000 Series Installation And Operating Instructions Manual

13.5 "Control mode"

Pump variant
TPE, TPED, NBE,
NBGE, NKE, NKGE
TPE, TPED, NBE, NKE
Series 2000
Possible control modes:
• Prop. pressure (proportional pressure)
• 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 operating mode must be set to
Normal before a control mode can be
enabled.
Factory setting
See section Factory settings.
Related information
30. Factory settings
13.5.1 "Proportional pressure"
Pump variant
TPE, TPED, NBE,
NBGE, NKE, NKGE
TPE, TPED, NBE, NKE
Series 2000
The head of the pump is reduced at decreasing water
demand and increased at rising water demand.
This control mode is especially suitable in systems
with relatively large pressure losses in the distribution
pipes. The head of the pump increases proportionally
to the flow in the system to compensate for the large
pressure losses in the distribution pipes.
The setpoint can be set with an accuracy of 0.1
metre. The head against a closed valve is half the
setpoint.
For more information about settings, see
section "Proportional pressure".
"Control mode"
●
●
"Proportional
pressure"
-
●
H
H
set
H
set
2
"Proportional pressure"
Example
• Factory-fitted differential-pressure sensor.
p
"Proportional pressure"
Controller settings
For recommended controller settings, see
section "Controller" ("Controller settings").
Related information
13.6 "Proportional-pressure setup"
13.14 "Controller" ("Controller settings")
Q
35