Grundfos MAGNA1 C Series User Manual

English (GB)
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6.7 Closed valve operation
MAGNA1 pumps can operate at any speed against a closed valve
for several days without damage to the pump. However, Grundfos
recommends to operate at the lowest possible speed curve to
minimize energy losses. There are no minimum flow
requirements.
6.8 Accessories
6.8.1 Insulating shells for heating systems
Insulating shells are available for single-head pumps only and are
supplied with the pump.
6.8.2 Insulating kits for air-conditioning and cooling systems
Insulating shells for pumps in air-conditioning and cooling
systems, down to -10 °C, are available as accessories and must
be ordered separately. A kit consists of two shells made of
polyurethane and a self-adhesive seal to ensure tight assembly.
6.8.3 Blanking flanges
A blanking flange is used to blank off the opening when one of the
pump heads of a twin-head pump is removed for service to
enable uninterrupted operation of the other pump.
Fig. 23 Position of a blanking flange
6.8.4 Counterflanges
Counterflange kits consist of two flanges, two gaskets and bolts
and nuts, making it possible to install the pump in any pipes. See
New MAGNA1 model C data booklet, Accessories section, for the
right dimension and product number.
Do not close inlet and outlet valves simultaneously,
always keep one open when the pump is running.
Media- and ambient temperatures must never
exceed the specified temperature range.
Insulating shells increase the pump dimensions.
Insulating shells increase the pump dimensions. The
dimensions of the insulating shells for pumps in
air-conditioning and cooling systems differ from
those of the insulating shells for pumps in heating
systems.
Pump type Product number
MAGNA1 25-40/60/80/100/120 (N) 98538852
MAGNA1 32-40/60/80/100/120 (N) 98538853
MAGNA1 32-40/60/80/100 F (N) 98538854
MAGNA1 32-120 F (N) 98164595
MAGNA1 40-40/60 F (N) 98538855
MAGNA1 40-80/100 F (N) 98164597
MAGNA1 40-120/150/180 F (N) 98164598
MAGNA1 50-60/80 F (N) 98164599
MAGNA1 50-100/120/150/180 F (N) 98164600
MAGNA1 65-40/60/80/100/120/150 F (N) 98538839
MAGNA1 80-60/80/100/120 F 98538851
MAGNA1 100-40/60/80/100/120 F 98164611
The insulating kit also fits stainless-steel versions
(N).
TM06 8518 0817
Pump type Product number
MAGNA1 D 25-40/60/80/100/120
MAGNA1 D 32-40/60/80/100 (F)
MAGNA1 D 40-40/60 F
98159373
MAGNA1 D 32-120 F
MAGNA1 D 40-80/100/120/150/180 F
MAGNA1 D 50-60/80/100/120/150/180 F
MAGNA1 D 65-40/60/80/100/120/150 F
MAGNA1 D 80-60/80/100/120 F
MAGNA1 D 100-40/60/80/100/120 F
98159372

Grundfos MAGNA1 C Series Specifications

General

Head	Up to 12 m
Maximum Operating Pressure	10 bar
Power Supply	1 x 230 V, 3 x 400 V
Insulation Class	F
Type	Circulator Pump
Pump Housing	Cast Iron
Approvals	CE, EAC
Connection Type	Flanged or threaded
Material	Cast Iron
Weight	Varies depending on model