Temperature Influence; Bus Communication; Pump Number; General Settings - Grundfos MAGNA3 Manual De Instrucciones

13.7.2 Temperature influence

When this function is enabled in proportional- or
constant-pressure control mode, the setpoint for head will be
reduced according to the liquid temperature.
Temperature influence can be set to function at liquid
temperatures below +176 °F or +122 °F (80 °C or 50 °C).
These temperature limits are called T
reduced in relation to the head set (= 100 %) according to the
characteristics below.
H
100 %
H
actual
30 %
68 122 176
20 50 80
T
actual
Fig. 38 Temperature influence
In the above example, T = +176 °F (+80 °C) has been
max.
selected.
The actual liquid temperature T
actual
to be reduced from 100 % to H
actual
The temperature influence function requires the following:
• Proportional-pressure, constant-pressure or constant-curve
control mode.
• Pump installed in flow pipe.
• System with flow-pipe temperature control.
Temperature influence is suitable for the following systems:
• Systems with variable flows (for example two-pipe heating
systems) in which the enabling of the temperature influence
function will ensure a further reduction of the pump
performance in periods with small heating demands and
consequently a reduced flow-pipe temperature.
• Systems with almost constant flows (for example one-pipe
heating systems and underfloor heating systems), in which
variable heating demands cannot be registered as changes in
the head as is the case with two-pipe heating systems. In such
systems, the pump performance can only be adjusted by
enabling the temperature influence function.
Selection of T
max.
In systems with a dimensioned flow-pipe temperature of:
• up to and including +131 °F (+55 °C), select T
(+50 °C)
• above +131 °F (+55 °C), select T
The temperature influence function cannot be
Note
Note
used in air-conditioning and cooling systems.
32
. The setpoint is
max.
H
T [°F] Q
T [°C]
causes the setpoint for head
.
= +122 °F
max.
= +176 °F (80 °C).
max.

13.8 Bus communication

13.8.1 Pump number

Navigation
Home > Settings > Bus communication > Pump number
Pump number
A unique number can be allocated to the pump. This makes it
possible to distinguish between pumps in connection with bus
communication.

13.9 General settings

13.9.1 Language
Navigation
Home > Settings > General settings > Language
Language
The display can be shown in any of the following languages:
GB, BG, CZ, DK, DE, EE, GR, ES, FR, HR, IT, LV, LT, HU, NL,
UA, PL, PT, RU, RO, SK, SI, RS, FI, SE, TR, CN, JP or KO.
Measuring units are automatically changed according to selected
language.
Setting:
1. Select language with and
2. Press [OK] to enable.
.