English (US)
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15. Description of selected functions
15.1 Setpoint
The setpoint for all control modes, except AUTO
ADAPT
and
FLOW
ADAPT
, can be set in this submenu when the desired control
mode has been selected. See section 15.4 Control mode.
15.2 Operating mode
Possible operating modes:
• Normal
The pump runs according to the selected control mode.
• Stop
The pump stops.
• Min.
The minimum curve mode can be used in periods in which a
minimum flow is required.
This operating mode is for instance suitable for manual night
setback if "Automatic Night Setback" is not desired.
• Max.
The maximum 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 15.3 Set manual speed.
The pump can be set to operate according to the maximum or
minimum curve, like an uncontrolled pump. See fig. 34.
Fig. 34 Maximum and minimum curves
15.3 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.
15.4 Control mode
Possible control modes:
•AUTO
ADAPT
•FLOW
ADAPT
• Prop. press. (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).
You can change the setpoint for all control modes, except
AUTO
ADAPT
and FLOW
ADAPT
, in the "Setpoint" submenu under
"Settings" when you have selected the desired control mode.
15.4.1 AUTO
ADAPT
The AUTO
ADAPT
control mode continuously adapts the pump
performance according to the actual system characteristic.
Fig. 35 AUTO
ADAPT
When you have enabled the AUTO
ADAPT
control mode, the pump
will start with the factory setting, H
fac
= H
set1
, and then adjust its
performance to A
1
. See fig. 35.
When the pump registers a lower head on the max. curve, A
2
, the
AUTO
ADAPT
function will automatically select a correspondingly
lower control curve, H
set2
. If the valves in the system close, the
pump will adjust its performance to A
3
.
The AUTO
ADAPT
control mode is a form of proportional-pressure
control where the control curves have a fixed origin, H
auto_min
.
The AUTO
ADAPT
control mode has been developed specifically
for heating systems and Grundfos do not recommend it for
air-conditioning and cooling systems.
TM00 5547 0995
The operating mode must be set to "
Normal
"
before a control mode can be enabled.
Pump variant AUTO
ADAPT
TPE3 (D) ●
TPE2 (D) -
You cannot set the setpoint manually.
TM05 7910 1613
A
1
: Original duty point.
A
2
: Lower registered head on the max. curve.
A
3
: New duty point after AUTO
ADAPT
control.
H
set1
: Original setpoint setting.
H
set2
: New setpoint after AUTO
ADAPT
control.
H
fac.
: Factory setting.
H
auto_min
: A fixed value of 5 ft (1.5 m).
H
Q
H
auto_min
H
fac
A
1
A
3
A
2
H
set1
H
set2
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