Grundfos 50 F Series User Manual

English (GB)
14
Technical data
Ambient temperature
0-40 °C.
Ambient temperature during transport: -40 to
+70 °C.
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.
Ambient temperatures below 0 °C
require the following conditions:
• The media temperature is 5 °C.
• The media contains glycol.
• The pump runs continuously and
does not stop.
• For twin-head pumps cascade
operation every 24 hours is
mandatory.

Grundfos 50 F Series Specifications

General

Protection class	IP55
Insulation class	F
Type	Centrifugal pump
Pump housing	Cast iron
Impeller	stainless steel
Frequency	50 Hz / 60 Hz
Connection type	Flange
Speed	2900 rpm
Liquid temperature	-10°C to +120°C
Voltage	230V or 400V