Grundfos CU 301 Instrucciones De Instalación Y Operación página 11

The following must be fulfilled:
1. Minimum head at no flow < static head +
system pressure.
If this is not fulfilled, the pressure may exceed
the pressure set on CU 301.
2. Maximum head at rated flow > dynamic head
+ system pressure.
If this is not fulfilled, the pressure may fall
below the pressure set on CU 301.
Maximum head at rated flow and minimum head
at no flow can be found in the following table:
Min. head at
Pump type
3000 rpm
5SQE05-90
5SQE05-140
5SQE05-180
5SQE07-230
5SQE07-270
5SQE07-320
5SQE10-360
5SQE10-410
5SQE15-450
10SQE05-110
10SQE05-160
10SQE07-200
10SQE07-240
10SQE10-290
10SQE15-330
15SQE05-70
15SQE05-110
15SQE07-150
15SQE07-180
15SQE10-220
15SQE10-250
15SQE15-290
22SQE05-40
22SQE-05-80
22SQE07-120
22SQE10-160
22SQE10-190
22SQE15-220
30SQE05-40
30SQE07-90
Max. head
at rated
0 gpm,
flow
10,700 rpm
[feet] [feet]
12 104
18 161
24 218
31 275
37 332
43 389
49 446
55 503
61 560
12 102
17 158
23 214
29 270
34 326
40 382
10 80
4 121
19 161
24 202
29 242
33 283
38 323
5 35
9 75
14 115
18 155
23 195
27 235
5 31
11 78
Min. head at
Pump type
3000 rpm
30SQE10-130
10SQE05-100NE
10SQE05-140NE
10SQE07-180NE
10SQE07-220NE
10SQE10-260NE
10SQE10-300NE
10SQE10-340NE
22SQE05-40NE
22SQE05-80NE
22SQE07-110NE
22SQE07-140NE
22SQE10-180NE
22SQE10-210NE
Related information
8.1 Troubleshooting with Grundfos GO Remote
4.3 Intended use
DANGER
Electric shock
Death or serious personal injury
‐
Install CU 301 on the wall to allow
any condensed water inside the
product to escape.
CU 301 is for use only with Grundfos SQE pumps
incorporating electronic power factor correction
(PFC). The system maintains a constant pressure
within the maximum pump performance despite
varying water consumption. The pressure is
registered by the pressure sensor, which
transmits a 4-20 mA signal to CU 301. CU 301
adjusts the pump performance accordingly to
maintain a constant pressure by changing the
pump speed. It is possible to connect an
operating relay for indication of pump operation.
The product is designed for both indoor and
outdoor use.
Max. head
at rated
0 gpm,
flow
10,700 rpm
[feet] [feet]
16 125
10 96
15 134
20 173
25 212
30 251
34 290
39 329
35 290
39 322
42 353
46 385
50 417
54 448
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