Grundfos 509921, Инструкция по эксплуатации

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English (GB)
11
6. Control functions
6.1 Operating panel
Fig. 11 Operating panel
The operating panel shows the following:
• The control mode, after pressing the button
• Alarm status.
6.1.1 Alarm or warning
If the pump has detected one or more alarms or warnings, the
first LED switches from green to red. When the fault has been
resolved the operating panel switches back to operating status.
See section
9. Fault finding the product .
6.2 Control modes
The pump has seven different control modes. Learn more about
them in the following sections.
6.2.1 Radiator heating mode (factory setting)
The radiator heating mode adjusts the pumps performance to the
actual heat demand in the system following a
proportional-pressure curve.
Fig. 12 Proportional-pressure curve
6.2.2 Underfloor heating mode
The underfloor heating mode adjusts the pump performance to
the actual heat demand in the system following a
constant-pressure curve.
Fig. 13 Constant-pressure curve
TM
06
7
286
46
16
Symbol Description
Button
I, II, III
Constant curve or constant speed curve I, II and
III
Radiator heating mode (proportional pressure)
Underfloor heating mode (constant pressure)
T
M
0
6
8
81
5 1
217
System
type
Recommended
control mode
Alternative control mode
Two-pipe
system
Radiator heating
mode
Constant curve or constant
speed, I, II or III. See
section 6.2.3 Constant
curve or constant speed, I,
II or III .
TM0
6
8
81
6 1
2
1
7
System type
Recommended
control mode
Alternative
control mode
Underfloor heating
system
Underfloor heating
mode
No alternatives
Q
H
Q
H