Install Instructions

English (US)
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19. Technical data
Supply voltage
See Pump Nameplate for Rated Supply Voltage:
1 x 115 V ± 10 %, 50/60 Hz, PE.
1 x 208-230 V ± 10 %, 50/60 Hz, PE.
Motor protection
The pump requires no external motor protection.
Enclosure class
Enclosure Type 2.
Insulation class
F.
Relative air humidity
Maximum 95 %.
Ambient temperature
+32 °F to +104 °F (0 °C to +40 °C).
During transport: -40 °F to +158 °F (-40 °C to +70 °C).
Temperature class
TF110 (EN 60335-2-51).
Liquid temperature
Continuously: +14 °F to +230 °F (-10 °C to +110 °C).
Stainless-steel pumps in domestic hot-water systems:
In domestic hot-water systems, we recommend to keep the liquid
temperature below +150 °F (+65 °C) to eliminate the risk of lime
precipitation.
System pressure
The maximum permissible system pressure is stated on the pump
nameplate:
175 psi (12 bar).
Inlet pressure
Recommended inlet pressures:
Single-head pumps:
• Min. 1.5 psi / 0.10 bar / 0.01 MPa at +167 °F (+75 °C)
• Min. 5 psi / 0.35 bar / 0.035 MPa at +203 °F (+95 °C)
• Min. 9.5 psi / 0.65 bar / 0.065 MPa at +230 °F (+110 °C).
Twin-head pumps:
• Min. 13 psi / 0.90 bar / 0.09 MPa at +167 °F (+75 °C)
• Min. 17.5 psi / 1.20 bar / 0.12 MPa at +203 °F (+95 °C)
• Min. 22 psi / 1.50 bar / 0.15 MPa at +230 °F (+110 °C).
EMC (electromagnetic compatibility)
EN 55014-1:2006, EN 55014-2:1998, EN 61800-3-3:2008 and
EN 61000-3-2:2006.
Sound pressure level
The sound pressure level of the pump is lower than 43 dB(A).
Leakage current
The pump mains filter will cause a discharge current to earth
during operation. I
leakage
< 3.5 mA.
Consumption when the pump is stopped
1 to 10 W, depending on activity, i.e. reading the display, use of
Grundfos GO Remote, interaction with modules, etc.
Input/output communication
cos φ
MAGNA3 has a built-in active PFC (Power Factor Correction)
which gives a cos φ from 0.98 to 0.99, i.e. very close to 1.
20. Disposal
This product has been designed with focus on the disposal and
recycling of materials. The following disposal values apply to all
variants of Grundfos MAGNA3 pumps:
• minimum 85 % recycling
• maximum 10 % incineration
• maximum 5 % depositing.
Values in percent of total weight.
This product or parts of it must be disposed of in an
environmentally sound way according to local regulations.
Subject to alterations.
Two digital inputs
External potential-free contact.
Contact load: 5 V, 10 mA.
Screened cable.
Loop resistance: Maximum 130 Ω.
Analog input
4-20 mA (load: 150 Ω).
0-10 VDC (load: 78 kΩ).
Two relay outputs
Internal potential-free changeover contact.
Maximum load: 250 V, 2 A, AC1.
Minimum load: 5 VDC, 20 mA.
Screened cable, depending on signal level.