Overview Of Settings - Grundfos MAGNA1 Series Installation And Operating Instructions Manual

8. Overview of settings

H
Fig. 19 Pump setting in relation to pump performance
Setting Pump curve
Lowest
PP1 proportional-pressure
curve
Intermediate
PP2 proportional-pressure
curve
Highest
PP3 proportional-pressure
curve
Lowest constant-pressure
CP1
curve
Intermediate
CP2
constant-pressure curve
Highest
CP3
constant-pressure curve
III Speed III
II Speed II
I Speed I
PP3
I
Function
The duty point of the pump will move up or down on the lowest proportional-pressure curve,
depending on the heat demand. See fig. 19.
The head (pressure) is reduced at falling heat demand and increased at rising heat demand.
The duty point of the pump will move up or down on the intermediate proportional-pressure
curve, depending on the heat demand. See fig. 19.
The head (pressure) is reduced at falling heat demand and increased at rising heat demand.
The duty point of the pump will move up or down on the highest proportional-pressure curve,
depending on the heat demand. See fig. 19.
The head (pressure) is reduced at falling heat demand and increased at rising heat demand.
The duty point of the pump will move out or in on the lowest constant-pressure curve,
depending on the heat demand in the system. See fig. 19.
The head (pressure) is kept constant, irrespective of the heat demand.
The duty point of the pump will move out or in on the intermediate constant-pressure curve,
depending on the heat demand in the system. See fig. 19.
The head (pressure) is kept constant, irrespective of the heat demand.
The duty point of the pump will move out or in on the highest constant-pressure curve,
depending on the heat demand in the system. See fig. 19.
The head (pressure) is kept constant, irrespective of the heat demand.
The pump runs on a constant curve which means that it runs at a constant speed.
In speed III, the pump is set to run on the max. curve under all operating conditions.
See fig. 19.
Quick venting of the pump can be obtained by setting the pump to speed III for a short
period.
The pump runs on a constant curve which means that it runs at a constant speed.
In speed II, the pump is set to run on the intermediate curve under all operating conditions.
See fig. 19.
The pump runs on a constant curve which means that it runs at a constant speed.
In speed I, the pump is set to run on the min. curve under all operating conditions.
See fig. 19.
CP3
PP2
CP2
PP1
CP1
III
II
Q
19