Grundfos MAGNA3 Bedienungsanleitung Seite 4

SeTTInGS
Control mode
AUTO
ADAPT
FLOW
ADAPT
Prop. press.
Const. press.
Const. temp.
t
t
t
t
t Differential temp.
t
t
Constant curve
2
The pump must be in operating mode "Normal" in order for the pump to run according to
the selected control mode. The table shows the different control modes along with
a recommended application type.
Recommended for most heating systems. During operation, the pump automatically
makes the necessary adjustment to the actual system characteristic.
Two-pipe Two-pipe
The FLOW
• The pump is running AUTO
• The delivered flow from the pump will never exceed a selected FLOW
Two-pipe
Used in systems with relatively large pressure losses in the distribution pipes.
The head of the pump will increase proportionally to the flow in the system to
compensate for the large pressure losses in the distribution pipes.
Two-pipe
We recommend this control mode in systems with relatively small pressure
losses. The pump head is kept constant, independent of the flow in the system.
Underfloor
In heating systems with a fixed system characteristic, for example domestic hot-water
systems, the control of the pump according to a constant return-pipe temperature is relevant.
Hot water
Ensures a constant differential temperature drop across heating and cooling systems.
The pump will maintain a constant differential temperature between the pump and the external sensor.
One-pipe
The pump can be set to operate according to a constant curve, like an uncontrolled pump.
Set the desired speed in % of the maximum speed in the range from minimum to 100%.
Hot water
control mode combines a control mode and a function:
ADAPT
ADAPT
* The FLOW function can
LIMIT
be activated in combination
with all of the below
. control modes.
LIMIT
2