Technical Data - Grundfos MAGNA3 D Installation And Operating Instructions Manual

12. Technical data

Supply voltage
1 x 115-230 V ± 10 %, 60 Hz*, PE. Check that the supply voltage
and frequency correspond to the values stated on the nameplate.
* All MAGNA3 pumps are approved to run on both 50 and 60
Hz.
Motor protection
The pump requires no external motor protection.
Enclosure class
Type 2.
Insulation class
F.
Relative humidity
Maximum 95 %.
Ambient temperature
32 to 104 °F (0 to +40 °C).
During transport: -40 to 158 °F (-40 to +70 °C).
Liquid temperature
Continuously: +14 to +230 °F (-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 149 °F (65 °C) to eliminate the risk of
lime precipitation.
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 12: 175 psi (12 bar / 1.2 MPa).
Test pressure
The pumps can withstand test pressures as indicated in EN
60335-2-51. See below.
• PN 12: 175 psi (12 bar / 1.2 MPa).
During normal operation, do not use the pump at higher
pressures than those stated on the nameplate.
The pressure test has been made with water containing
anticorrosive additives at a temperature of 68 °F (20 °C).
60
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.
Liquid temperature
MAGNA3 [167 °F
DN (75 °C)]
Inlet pressure [psi (bar)]
32-60/100 1.5 (0.10)
40-80/120/180 1.45 (0.10)
50-80 1.45 (0.10)
50-150 10.15 (0.70)
65-120/150 10.15 (0.70)
80-100 7.25 (0.50)
100-120 10.15 (0.70)
In the case of cascade operation, the required relative inlet
pressure must be increased by 1.45 psi (0.1 bar / 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 984 ft (300 meters) above sea level. For altitudes above 984 ft
(300 meters), the required relative inlet pressure must be
increased by 0.145 psi (0.01 bar / 0.001 MPa) per 328 ft (100
meters) altitude. The MAGNA3 pump is only approved for an
(
altitude of 6560 ft 2000 meters) 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
32-60/100
40-80
50-80
40-120/180
50-150
65-120
65-150
80-100
100-120
[203 °F [230 °F
(95 °C)] (110 °C)]
5.0 (0.35) 14.5 (1.00)
7.25 (0.50) 14.50 (1.00)
5.80 (0.40) 14.50 (1.00)
17.40 (1.20) 24.66 (1.70)
17.40 (1.20) 24.66 (1.70)
14.50 (1.00) 21.76 (1.50)
17.40 (1.20) 24.66 (1.70)
Max. dB(A)
39
45
50
55