Grundfos MAGNA 25-100 - Installation; Changing Control Box Position

7
4. Installation
Arrows on the pump housing indicate the liquid flow
direction through the pump.
4.1 Changing the control box position
Procedure:
4.1.1 Control box position
For permissible control box positions, see the Quick
Guide.
4.2 Insulation shells
• Insulation shells for pumps in heating systems are
supplied with the pump.
• Insulation shells for pumps in air-conditioning sys-
tems are accessories and must be ordered sepa-
rately. Please contact Grundfos.
The fitting of insulation shells will increase the pump
dimensions. See the dotted line on the dimensional
sketches on pages 280 and 281.
The insulation shells are only available for single-
head pumps.
4.3 Twin-head pumps
Twin-head pumps are supplied fitted with a GENI
module on each control box. The modules are
connected via a cable. The modules determine the
operating mode of the pump, see section
7.9.1 Control of twin-head pumps.
The automatic air vent is not supplied with the pump.
.
Fig. 1 Automatic air vent
4.4 Non-return valve
If a non-return valve is fitted in the pipe system, see
fig. 2, it must be ensured that the set minimum
discharge pressure of the pump is always higher
than the closing pressure of the valve. This is
especially important in proportional-pressure control
mode (reduced head at low flow).
Fig. 2 Non-return valve
Warning
Before any dismantling of the pump,
the system must be drained or the
isolating valves on both sides of the
pump must be closed as the pumped
liquid may be scalding hot and under
high pressure.
Step Action Illustration
1
Remove the two
screws.
TM03 0474 5204
2
Pull the stator and
the pump head
approx. 5 mm out.
TM03 0475 5204
3
Turn the stator and
the pump head to
the desired
position.
TM03 0476 5204
4
Push the stator and
the pump head into
place.
TM03 0475 5204
5
Refit the two
screws.
TM03 0580 0305
M
AX
9
8
6
7
5
4
3
2
1
m MIN
STOP
EXT
AUTO
ADAPT
P/N: 96281016
PC: 0512
Made in Germany
1 230-240V 50/60 Hz
I
1/1 (A) P 1 (W) TF 110
0,04 10 IP 44
0,80 184
B
Min. Min.
Max. Max.
MAGNA 32-100
Max. 10 Bar
M
AX
9
8
6
7
5
4
3
2
1
m
M
I
N
STOP
EXT
AUTO
ADAPT
P/N: 96281016
PC: 0512
Made in Germany
1 230-240V 50/60 Hz
I
1/1 (A) P 1 (W) TF 110
0,04 10 IP 44
0,80 184
B
Min. Min.
Max. Max.
MAGNA 32-100
Max. 10 Bar
M
A
X
9
8
6
7
5
4
3
2
1
m
M
IN
STOP
E
X
T
AUTO
A
D
A
P
T
P
/
N
:
9
6
2
8
1
0
1
6
P
C
:
0
5
1
2
M
a
d
e
in
G
e
r
m
a
n
y
1
2
3
0
-
2
4
0
V
5
0
/
6
0
H
z
I
1
/
1
(
A
)
P
1
(
W
)
T
F
1
1
0
0
,0
4
1
0
I
P
4
4
0
,8
0
1
8
4
B
M
i
n
.
M
i
n
.
M
a
x
.
M
a
x
.
M
A
G
N
A
3
2
-
1
0
0
M
a
x
.
1
0
B
a
r
M
A
X
9
8
6
7
5
4
3
2
1
m
M
IN
STOP
EXT
AUTO
ADAPT
P/N: 96281016
PC: 0512
Made in Germany
1 230-240V 50/60 Hz
I
1/1 (A) P 1 (W) TF 110
0,04 10 IP 44
0,80 184
B
Min. Min.
Max. Max.
MAGNA 32-100
Max. 10 Bar
P
/N: 96
2
8
1
0
1
6
P
C
: 0
5
1
2
M
a
d
e
i
n
G
e
r
m
a
n
y
1
2
3
0
-2
4
0
V
5
0
/
6
0
H
z
I
1/
1
(A
)
P
1
(W
)
T
F
1
1
0
0
,0
4
1
0
IP
4
4
0
,8
0
1
8
4
B
M
in.
M
in.
M
ax
.
M
ax
.
MAGNA 32-100
M
ax
.
1
0
B
a
r
Note
It is recommended to fit insulation
shells to the pump.
Caution
Twin-head pumps mounted in
horizontal pipes must be fitted with an
automatic air vent (Rp 1/4) in the upper
part of the pump housing, see fig. 1.
TM03 0377 5004TM02 0640 0301
P/N: 96281016
PC: 0512
M
a
d
e
i
n
G
e
r
m
a
n
y
1 230-240V 50/60 Hz
I
1
/
1
(A)
P
1
(W)
TF 110
0,04 10
IP 44
0,80 184
B
M
in
.
M
in
.
M
a
x
.
M
a
x
.
M
A
G
N
A
3
2
-
1
0
0
M
a
x
.
10
Ba
r
P
/
N
:
9
6
2
8
1
0
1
6
P
C
:
0
5
1
2
M
a
d
e
i
n
G
e
r
m
a
n
y
1
2
3
0
-
2
4
0
V
5
0
/
6
0
H
z
I
1
/
1
(
A
)
P
1
(
W
)
T
F
1
1
0
0
,
0
4
1
0
I
P
4
4
0
,
8
0
1
8
4
B
M
i
n
.
M
i
n
.
M
a
x
.
M
a
x
.
M
A
G
N
A
3
2
-
1
0
0
M
a
x
.
1
0
B
a
r