Technical Data - Grundfos MAGNA1 C Series Installation And Operating Instructions Manual

10. Technical data

Supply voltage
1 x 230 V ± 10 %, 50/60 Hz, PE.
Motor protection
The pump requires no external motor protection.
Enclosure class
IPX4D (EN 60529).
Insulation class
F.
Relative humidity
Maximum 95 %.
Ambient temperature
0 to 40 °C.
During transport: -40 to +70 °C.
Temperature class
TF110 (EN 60335-2-51).
Liquid temperature
Continuously: -10 to +110 °C.
Stainless steel pumps in domestic hot-water systems:
In domestic hot-water systems, we recommend that you keep the
liquid temperature below 65 °C to eliminate the risk of lime
precipitation.
Maximum system pressure
The actual inlet pressure and the pump pressure
against a closed valve must be lower than the
maximum permissible system pressure.
The maximum permissible system pressure is stated on the pump
nameplate:
PN 6: 6 bar or 0.6 MPa
PN 10: 10 bar or 1.0 MPa
PN 16: 16 bar or 1.6 MPa.
Test pressure
The pumps can withstand test pressures as indicated in EN
60335-2-51.
• PN 6: 7.2 bar
• PN 10: 12 bar
• PN 6/10: 12 bar
• PN 16: 19.2 bar.
During normal operation, do not use the pump at higher
pressures than those stated on the nameplate. See fig. 20.
The pressure test has been made with water containing
anti-corrosive additives at a temperature of 20 °C.
Minimum inlet pressure
The following relative minimum inlet pressure must be available
at the pump inlet during operation to avoid cavitation noise and
damage to the pump bearings.
The values in the table below apply to single-head
pumps and twin-head pumps in single-head
operation.
32
Single-head pumps
DN
25-40/60/80/100/120 0.10 / 0.01 0.35 / 0.035 1.0 / 0.10
32-40/60/80/100/120 0.10 / 0.01 0.35 / 0.035 1.0 / 0.10
32-120 F 0.10 / 0.01 0.20 / 0.020 0.7 / 0.07
40-40/60 F 0.10 / 0.01 0.35 / 0.035 1.0 / 0.10
40-80/100/120/150/180 F 0.10 / 0.01
50-60/80 F 0.10 / 0.01
50-100/120 F 0.10 / 0.01
50-150/180 F 0.70 / 0.07
65-40/60/80/100/120/150 F 0.70 / 0.07
80-60/80/100/120 F 0.50 / 0.05
100-40/60/80/100/120 F 0.70 / 0.07
In the case of twin-head operation, increase the required relative
inlet pressure by 0.1 bar or 0.01 MPa compared to the stated
values for single-head pumps or twin-head pumps in single-head
operation.
The relative minimum inlet pressures apply to pumps installed up
to 300 metres above sea level. For altitudes above 300 metres,
increase the required relative inlet pressure by 0.01 bar or 0.001
MPa per 100 metres altitude. The pump is only approved for an
altitude of maximum 2000 metres above sea level.
Sound pressure level
The sound pressure level of the pump is dependent on the power
consumption. Levels are determined in accordance with ISO
3745 and ISO 11203, method Q2.
Pump size
25-40/60/80/100/120
32-40/60/80/100/120
40-40/60
50-40
32-120 F
40-80/100
50-60/80
65-40/60
80-40
40-120/150/180
50-100/120/150/180
65-80/100/120
80-60/80
100-40/60
65-150
80-100/120
100-80/100/120
Leakage current
The mains filter will cause a leakage current to earth during
operation. The leakage current is less than 3.5 mA.
Power factor
The terminal-connected versions have a built-in active
power-factor correction which gives a cos φ from 0.98 to 0.99.
The plug-connected versions have a built-in passive power-factor
correction with coil and resistors which ensure that the current
drawn from the grid is in phase with the voltage and that the
current is approximately sinusoidal which gives a cos φ from 0.55
to 0.98.
Liquid temperature
75 °C 95 °C 110 °C
Inlet pressure
[bar] / [MPa]
0.50 / 0.05 1.0 / 0.10
0.40 / 0.04 1.0 / 0.10
0.50 / 0.05 1.0 / 0.10
1.20 / 0.12 1.7 / 0.17
1.20 / 0.12 1.7 / 0.17
1.00 / 0.10 1.5 / 0.15
1.20 / 0.12 1.7 / 0.17
Max. dB(A)
39
45
50
55