Grundfos MAGNA1 Series User Manual

English (GB)
19
8. Overview of settings
Fig. 19 Pump setting in relation to pump performance
TM05 2777 0512
Setting Pump curve Function
PP1
Lowest
proportional-pressure
curve
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.
PP2
Intermediate
proportional-pressure
curve
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.
PP3
Highest
proportional-pressure
curve
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.
CP1
Lowest constant-pressure
curve
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.
CP2
Intermediate
constant-pressure curve
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.
CP3
Highest
constant-pressure curve
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.
III Speed III
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.
II Speed II
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.
I Speed I
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.
III
II
I
H
PP3
CP3
CP2
PP1
CP1
PP2
Q

Grundfos MAGNA1 Series Specifications

General

Insulation Class	F
Type	Circulator pump
Control Panel Position	Integrated
Series	MAGNA1
Weight	Varies by model
Power Supply	3 x 380-480 V, 50/60 Hz
Pump Housing	Cast iron
Connection Type	Flanged
Voltage	380-480 V
Material	Cast iron, stainless steel
Temperature Range	-10°C to +110°C
Ambient Temperature Range	0°C to +40°C